{"title":"Optical Test Targets","description":null,"products":[{"product_id":"t-r3l1s4p-positive-1951-usaf-wheel-pattern-test-target-3-x-1","title":"T-R3L1S4P - Positive 1951 USAF Wheel Pattern Test Target, 3\" x 1\"","description":"\u003cp\u003eT-R3L1S4P - Positive 1951 USAF Wheel Pattern Test Target, 3\" x 1\"\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003e3\" x 1\" (76.2 mm x 25.4 mm) Targets for Measuring Resolution Across Image\u003c\/li\u003e\n\u003cli\u003eDetermine the Resolution of an Optical System\u003c\/li\u003e\n\u003cli\u003eConforms to MIL-S-150A Standard\u003c\/li\u003e\n\u003cli\u003ePositive, Negative, and Positive Reflective Targets Available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"SpecTable\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth colspan=\"4\" align=\"center\"\u003eOptical Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"subhead\"\u003e\n\u003ctd\u003eItem #\u003c\/td\u003e\n\u003ctd\u003eT-R3L1S4P\u003c\/td\u003e\n\u003ctd\u003eT-R3L1S4N\u003c\/td\u003e\n\u003ctd\u003eT-R3L1S4PR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003eLR Chrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackground\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003ctd\u003eChrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Flatness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e≤15 µm\u003c\/td\u003e\n\u003ctd\u003e≤15 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Optical Density\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e≥3.0\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Reflectance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e-\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome: \u0026lt;10%\u003cbr\u003eChrome: \u0026gt;40%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40589419937890,"sku":"T-R3L1S4P","price":385.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/21077-xl.jpg?v=1701120481"},{"product_id":"t-r3l1s4n-negative-1951-usaf-wheel-pattern-test-target-3-x-1","title":"T-R3L1S4N - Negative 1951 USAF Wheel Pattern Test Target, 3\" x 1\"","description":"\u003cp\u003eT-R3L1S4N - Negative 1951 USAF Wheel Pattern Test Target, 3\" x 1\"\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003e3\" x 1\" (76.2 mm x 25.4 mm) Targets for Measuring Resolution Across Image\u003c\/li\u003e\n\u003cli\u003eDetermine the Resolution of an Optical System\u003c\/li\u003e\n\u003cli\u003eConforms to MIL-S-150A Standard\u003c\/li\u003e\n\u003cli\u003ePositive, Negative, and Positive Reflective Targets Available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"SpecTable\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth colspan=\"4\" align=\"center\"\u003eOptical Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"subhead\"\u003e\n\u003ctd\u003eItem #\u003c\/td\u003e\n\u003ctd\u003eT-R3L1S4P\u003c\/td\u003e\n\u003ctd\u003eT-R3L1S4N\u003c\/td\u003e\n\u003ctd\u003eT-R3L1S4PR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003eLR Chrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackground\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan style=\"font-size: 11.6667px;\"\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003ctd\u003eChrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Flatness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e≤15 µm\u003c\/td\u003e\n\u003ctd\u003e≤15 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Optical Density\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e≥3.0\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Reflectance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e-\u003c\/td\u003e\n\u003ctd\u003eLR\u003csup\u003ea\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eChrome: \u0026lt;10%\u003cbr\u003eChrome: \u0026gt;40%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40589671432290,"sku":"T-R3L1S4N","price":385.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/21078-xl.jpg?v=1701142571"},{"product_id":"t-r3l3s1n-negative-1951-usaf-test-target-3-x-3","title":"T-R3L3S1N - Negative 1951 USAF Test Target, 3\" x 3\"","description":"\u003cp\u003eT-R3L3S1N - Negative 1951 USAF Test Target, 3\" x 3\"\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003e3\" x 3\" (76.2 mm x 76.2 mm) Targets Offer Resolution up to 4.4 µm per Line Pair\u003c\/li\u003e\n\u003cli\u003eDetermine Resolution of an Optical System\u003c\/li\u003e\n\u003cli\u003eConforms to MIL-S-150A Standard\u003c\/li\u003e\n\u003cli\u003ePositive, Negative, and Positive Reflective Targets Available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNOTES\/SPECIFICATIONS:\u003c\/p\u003e\n\u003cp\u003e1. MATERIAL: SODA LIME\u003c\/p\u003e\n\u003cp\u003e2. COATING: OD3 LOW-REFLECTIVITY CHROME\u003c\/p\u003e\n\u003cp\u003e3. FACE DIMENSION TOLERANCE: 0.5 mm\u003c\/p\u003e\n\u003cp\u003e4. THICKNESS TOLERANCE: 0.2 mm\u003c\/p\u003e\n\u003cp\u003e5. SURFACE FLATNESS: ≤15 µm\u003c\/p\u003e\n\u003cp\u003e6. OPTICAL DENSITY: ≥3.0 AT 430 nm\u003c\/p\u003e\n\u003cp\u003e7. R3L3S1N IS A NEGATIVE TEST TARGET WITH CLEAR PATTERN AND DARK BACKGROUND 8. THE PATTERN IS USAF 1951 TEST PATTERN WITH RESOLUTION FROM GROUP -2 TO GROUP 7\u003c\/p\u003e\n\u003ctable class=\"SpecTable\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth colspan=\"4\" align=\"center\"\u003eOptical Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"subhead\"\u003e\n\u003ctd\u003eItem #\u003c\/td\u003e\n\u003ctd\u003eT-R3L3S1P\u003c\/td\u003e\n\u003ctd\u003eT-R3L3S1N\u003c\/td\u003e\n\u003ctd\u003eT-R3L3S1PR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackground\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003eLR Chrome\u003c\/td\u003e\n\u003ctd\u003eChrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Flatness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e≤15 µm\u003c\/td\u003e\n\u003ctd\u003e≤15 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Optical Density\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e≥3.0\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Reflectance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e-\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome: \u0026lt;10%\u003cbr\u003eChrome: \u0026gt;40%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40590738882658,"sku":"T-R3L3S1N","price":350.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/20752-xl_1.jpg?v=1701194983"},{"product_id":"t-r3l3s1pr-positive-reflective-1951-usaf-test-target-3-x-3","title":"T-R3L3S1PR - Positive Reflective 1951 USAF Test Target, 3\" x 3\"","description":"\u003cp\u003eT-R3L3S1PR - Positive Reflective 1951 USAF Test Target, 3\" x 3\"\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003e3\" x 3\" (76.2 mm x 76.2 mm) Targets Offer Resolution up to 4.4 µm per Line Pair\u003c\/li\u003e\n\u003cli\u003eDetermine Resolution of an Optical System\u003c\/li\u003e\n\u003cli\u003eConforms to MIL-S-150A Standard\u003c\/li\u003e\n\u003cli\u003ePositive, Negative, and Positive Reflective Targets Available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNOTES\/SPECIFICATIONS:\u003c\/p\u003e\n\u003cp\u003e1. MATERIAL: SODA LIME\u003c\/p\u003e\n\u003cp\u003e2. COATING: LOW-REFLECTIVITY CHROME ON CHROME PATTERN\u003c\/p\u003e\n\u003cp\u003e3. FACE DIMENSION TOLERANCE: 0.5 mm\u003c\/p\u003e\n\u003cp\u003e4. THICKNESS TOLERANCE: 0.3 mm\u003c\/p\u003e\n\u003cp\u003e5. SURFACE FLATNESS: ≤15 µm\u003c\/p\u003e\n\u003cp\u003e6. REFLECTANCE: LOW-REFLECTIVITY CHROME \u0026lt;10% AND CHROME \u0026gt;40% AT 430 nm.\u003c\/p\u003e\n\u003cp\u003e7. R3L3S1PR IS A TEST TARGET WITH DARK LOW-REFLECTIVITY CHROME PATTERN AND REFLECTIVE CHROME BACKGROUND.\u003c\/p\u003e\n\u003cp\u003e8. THE PATTERN IS USAF 1951 TEST PATTERN WITH RESOLUTION FROM GROUP -2 TO GROUP 7\u003c\/p\u003e\n\u003ctable class=\"SpecTable\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth align=\"center\" colspan=\"4\"\u003eOptical Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"subhead\"\u003e\n\u003ctd\u003eItem #\u003c\/td\u003e\n\u003ctd\u003eT-R3L3S1P\u003c\/td\u003e\n\u003ctd\u003eT-R3L3S1N\u003c\/td\u003e\n\u003ctd\u003eT-R3L3S1PR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003eLR\u003csup\u003ea\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackground\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003eLR\u003csup\u003ea\u003c\/sup\u003e Chrome\u003c\/td\u003e\n\u003ctd\u003eChrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Flatness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e≤15 µm\u003c\/td\u003e\n\u003ctd\u003e≤15 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Optical Density\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e≥3.0\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Reflectance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e-\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan style=\"font-size: 11.6667px;\"\u003e \u003c\/span\u003eChrome: \u0026lt;10%\u003cbr\u003eChrome: \u0026gt;40%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40590785937506,"sku":"T-R3L3S1PR","price":348.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/TTN238640-xl.jpg?v=1701197433"},{"product_id":"t-r3l1s4pr-positive-reflective-1951-usaf-wheel-pattern-test-target-3-x-2","title":"T-R3L1S4PR - Positive Reflective 1951 USAF Wheel Pattern Test Target, 3\" x 1\"","description":"\u003cp\u003eT-R3L1S4PR - Positive Reflective 1951 USAF Wheel Pattern Test Target, 3\" x 1\"\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003eDetermine Resolution of a Polarizing Optical System\u003c\/li\u003e\n\u003cli\u003eBirefringent Target Displays Both Positive and Negative Patterns\u003c\/li\u003e\n\u003cli\u003eConforms to MIL-S-150A Standard\u003c\/li\u003e\n\u003cli\u003e1\" × 3\" (25.4 mm × 76.2 mm) Soda Lime Glass Substrate with Cover Slip\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"SpecTable\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\" align=\"center\"\u003eOptical Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLiquid Crystal Polymer Between\u003cbr\u003eSoda Lime Glass Slide and\u003cbr\u003eSchott D 263\u003csup\u003e®\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eM Cover Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSlide Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.0 mm (0.04\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCover Slip Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.17 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRetardance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e280 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRetardance Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;λ\/50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRetardance Uniformity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;10 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNOTES\/SPECIFICATIONS:\u003c\/p\u003e\n\u003cp\u003e1. PROTECTIVE GLASS MATERIAL: SCHOTT D 263® * M SLIDE MATERIAL: SODA-LIME GLASS\u003c\/p\u003e\n\u003cp\u003e2. PROTECTIVE GLASS THICKNESS: 0.17mm\u003c\/p\u003e\n\u003cp\u003e3. MATERIAL: LIQUID CRYSTAL POLYMER\u003c\/p\u003e\n\u003cp\u003e4. RETARDANCE: 280nm\u003c\/p\u003e\n\u003cp\u003e5. RETARDANCE ACCURACY: \u0026lt;λ\/50 @ 633nm\u003c\/p\u003e\n\u003cp\u003e6. RETARDANCE UNIFORMITY: \u0026lt; 10nm 7. SURFACE QUALITY: 60-40 SCRATCH-DIG\u003c\/p\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40590793441378,"sku":"T-R3L1S4PR","price":480.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/CTN020691-xl.jpg?v=1701197932"},{"product_id":"t-r1l3s5p-positive-combined-resolution-and-distortion-test-target-3-x-1","title":"T-R1L3S5P - Positive Combined Resolution and Distortion Test Target, 3\" x 1\"","description":"\u003cp\u003eT-R1L3S5P - Positive Combined Resolution and Distortion Test Target, 3\" x 1\"\u003c\/p\u003e\n\u003ctable class=\"SpecTable\" cellspacing=\"0\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth width=\"12%\" align=\"left\"\u003eTarget Feature\u003c\/th\u003e\n\u003cth width=\"38%\" align=\"center\"\u003eDetails\u003c\/th\u003e\n\u003cth width=\"12%\" align=\"left\"\u003eTarget Feature\u003c\/th\u003e\n\u003cth width=\"38%\" align=\"center\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"subhead\" align=\"left\"\u003eNBS 1963A\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eFrequencies from 4.5 cycles\/mm to 228 cycles\/mm (See List Above)\u003c\/td\u003e\n\u003ctd class=\"subhead\" align=\"left\"\u003eConcentric Circles\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e10 Circles with Radii from 100 µm to 1000 µm in 100 µm Intervals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"subhead\" align=\"left\"\u003eDistortion Grid (Squares)\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e3 Grids: 100 lp\/mm, 150 lp\/mm, 200 lp\/mm\u003c\/td\u003e\n\u003ctd class=\"subhead\" align=\"left\"\u003eFixed Ronchi Rulings\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e3 Rulings:100 lp\/mm, 150 lp\/mm, and 200 lp\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"subhead\" align=\"left\"\u003eDistortion Grid (Dots)\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e3 Grids: 400 µm Pitch of Ø80 µm Dots,\u003cbr\u003e200 µm Pitch of Ø 40 µm Dots, 100 µm Pitch of Ø20 µm Dots\u003c\/td\u003e\n\u003ctd class=\"subhead\" align=\"left\"\u003eVariable Ronchi Rulings\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e20 Rulings (Each 1 mm x 1 mm): 10 lp\/mm to 200 lp\/mm in\u003cspan\u003e \u003c\/span\u003e\u003cnobr\u003e10 lp\/mm Intervals\u003c\/nobr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"subhead\" align=\"left\"\u003eTwo-Point Resolution Dots\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eØ25 µm, Ø20 µm, Ø15 µm, Ø12.5 µm, Ø10 µm, Ø7.5 µm, and Ø5 µm\u003c\/td\u003e\n\u003ctd class=\"subhead\" align=\"left\"\u003ePinholes\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eØ25 µm, Ø20 µm, Ø15 µm, Ø12.5 µm, Ø10 µm, Ø7.5 µm, and Ø5 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"subhead\" align=\"left\"\u003eInterdigitated Lines\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e6.25 lp\/mm, 12.5 lp\/mm, 25 lp\/mm, 50 lp\/mm, 100 lp\/mm,\u003cspan\u003e \u003c\/span\u003e\u003cnobr\u003eand 200 lp\/mm\u003c\/nobr\u003e\n\u003c\/td\u003e\n\u003ctd class=\"subhead\" align=\"left\"\u003eMicrometers\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e3 Rulers: 10 mm Scale with 50 µm Divs, 1 mm Scale with 10 µm Divs, and 1mm x 1 mm XY Scale with 50 µm Divs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"subhead\" align=\"left\"\u003eSector Star\u003c\/td\u003e\n\u003ctd colspan=\"3\" align=\"center\"\u003e36 Bars through 360°, \u003cspan\u003e50 µm Radius Center Circle, and Ten Concentric Circles with Radii from 100 µm to 500 µm in 50 µm Intervals\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable class=\"SpecTable\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth align=\"center\" colspan=\"2\"\u003eOptical Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackground\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Flatness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤15 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Optical Density\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eNOTES\/SPECIFICATIONS:\u003c\/p\u003e\n\u003cp\u003e1. MATERIAL: SODA LIME\u003c\/p\u003e\n\u003cp\u003e2. COATING: OD3 LOW-REFLECTIVITY CHROME\u003c\/p\u003e\n\u003cp\u003e3. FACE DIMENSION TOLERANCE: 0.5 mm\u003c\/p\u003e\n\u003cp\u003e4. THICKNESS TOLERANCE: 0.3 mm\u003c\/p\u003e\n\u003cp\u003e5. SURFACE FLATNESS: ≤15 µm\u003c\/p\u003e\n\u003cp\u003e6. OPTICAL DENSITY: ≥3.0 AT 430 nm\u003c\/p\u003e\n\u003cp\u003e7. R1L3S5P IS A POSITIVE TEST TARGET WITH DARK PATTERN AND CLEAR BACKGROUND. 8. PATTERNS ARE NBS 1963, CROSS RULER, STAGE RULER, SECTOR STAR, PINHOLES, DOTS, INTERDIGITATED LINE, VARIABLEFREQUENCY GRATING, FIXED RONCHI RULINGS, RONCHI RULING GRID, DISTORTION TARGET, BLACK BOX, CONCENTRIC CIRCLES\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003e3\" x 1\" (76.2 mm x 25.4 mm) Target\u003c\/li\u003e\n\u003cli\u003eIncludes NBS 1963A Pattern, Sector Star, Concentric Circles, Grids, Ronchi Rulings, and More (See Table Below)\u003c\/li\u003e\n\u003cli\u003eDetermine Resolution of an Optical System\u003c\/li\u003e\n\u003cli\u003eMeasure Image Distortion, Astigmatism, and Other Aberrations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40590881718370,"sku":"T-R1L3S5P","price":1625.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/QTN004354-xl.jpg?v=1701203774"},{"product_id":"t-r1l1s1p-positive-combined-resolution-and-distortion-test-target-18-mm-square","title":"T-R1L1S1P - Positive Combined Resolution and Distortion Test Target, 18 mm Square","description":"\u003cp\u003eT-R1L1S1P - Positive Combined Resolution and Distortion Test Target, 18 mm Square\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003eMeasure Image Distortion, Astigmatism, and Other Aberrations\u003c\/li\u003e\n\u003cli\u003e18 mm (0.71\") Square, 1.5 mm Thick Target\u003c\/li\u003e\n\u003cli\u003eDetermine Resolution of an Optical System\u003c\/li\u003e\n\u003cli\u003eIncludes 1951 USAF Pattern, Sector Star, Concentric Circles, Grids, and Ronchi Rulings\u003c\/li\u003e\n\u003cli\u003ePositive and Negative Targets Available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"SpecTable\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth colspan=\"3\" align=\"center\"\u003eOptical Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"subhead\"\u003e\n\u003ctd\u003eItem #\u003c\/td\u003e\n\u003ctd\u003eT-R1L1S1P\u003c\/td\u003e\n\u003ctd\u003eT-R1L1S1N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackground\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eSurface Flatness\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e≤15 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Optical Density\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e≥3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40590883946594,"sku":"T-R1L1S1P","price":945.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/QTN005541-xl.jpg?v=1701204375"},{"product_id":"t-r1l1s1n-negative-combined-resolution-and-distortion-test-target-18-mm-square","title":"T-R1L1S1N - Negative Combined Resolution and Distortion Test Target, 18 mm Square","description":"\u003cp\u003eT-R1L1S1N - Negative Combined Resolution and Distortion Test Target, 18 mm Square\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003eMeasure Image Distortion, Astigmatism, and Other Aberrations\u003c\/li\u003e\n\u003cli\u003e18 mm (0.71\") Square, 1.5 mm Thick Target\u003c\/li\u003e\n\u003cli\u003eDetermine Resolution of an Optical System\u003c\/li\u003e\n\u003cli\u003eIncludes 1951 USAF Pattern, Sector Star, Concentric Circles, Grids, and Ronchi Rulings\u003c\/li\u003e\n\u003cli\u003ePositive and Negative Targets Available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable width=\"100%\" cellspacing=\"0\" class=\"SpecTable\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth align=\"left\"\u003eTarget Feature\u003c\/th\u003e\n\u003cth align=\"center\"\u003eDetails\u003c\/th\u003e\n\u003cth align=\"left\"\u003eTarget Feature\u003c\/th\u003e\n\u003cth align=\"center\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\" class=\"subhead\"\u003e1951 USAF Target\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eGroups 2 - 7\u003c\/td\u003e\n\u003ctd align=\"left\" class=\"subhead\"\u003eConcentric Circles\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e10 Circles with Radii from 100 µm to 1000 µm in 100 µm Intervals, Labeled 1 to 10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\" class=\"subhead\"\u003eGrids\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e20 x 20 Arrays with 100 µm, 50 µm, and 10 µm Pitch\u003c\/td\u003e\n\u003ctd align=\"left\" class=\"subhead\"\u003eRonchi Rulings\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e13 Rulings from 30 lp\/mm\u003cspan\u003e \u003c\/span\u003eto 150 lp\/mm in 10 lp\/mm Intervals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\" class=\"subhead\"\u003eSector Star\u003c\/td\u003e\n\u003ctd align=\"center\" colspan=\"3\"\u003e36 Bars through 360°, 10 µm Radius Center Circle, and Ten Concentric Circles with Radii from 50 µm to 500 µm in 50 µm Intervals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable class=\"SpecTable\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth align=\"center\" colspan=\"3\"\u003eOptical Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"subhead\"\u003e\n\u003ctd\u003eItem #\u003c\/td\u003e\n\u003ctd\u003eT-R1L1S1P\u003c\/td\u003e\n\u003ctd\u003eT-R1L1S1N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackground\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003eLR\u003csup\u003ea\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eSurface Flatness\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e≤15 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Optical Density\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e≥3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eNOTES\/SPECIFICATIONS:\u003c\/p\u003e\n\u003cp\u003e1. MATERIAL: SODA LIME\u003c\/p\u003e\n\u003cp\u003e2. COATING: OD3 LOW-REFLECTIVITY CHROME\u003c\/p\u003e\n\u003cp\u003e3. FACE DIMENSION TOLERANCE: 0.75 mm\u003c\/p\u003e\n\u003cp\u003e4. THICKNESS TOLERANCE: 0.25 mm\u003c\/p\u003e\n\u003cp\u003e5. SURFACE FLATNESS: ≤15 µm\u003c\/p\u003e\n\u003cp\u003e6. OPTICAL DENSITY: ≥3.0 AT 430 nm\u003c\/p\u003e\n\u003cp\u003e7. R1L1S1N IS A NEGATIVE RETICLE WITH DARK BACKGROUND AND CLEAR PATTERNS\u003c\/p\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40590886666338,"sku":"T-R1L1S1N","price":955.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/QTN005542-xl.jpg?v=1701205024"},{"product_id":"t-r1l3s15n-ronchi-ruling-test-target-3-x-1-80-lp-mm","title":"T-R1L3S15N - Ronchi Ruling Test Target, 3\" x 1\", 80 lp\/mm","description":"\u003cp\u003eT-R1L3S15N - Ronchi Ruling Test Target, 3\" x 1\", 80 lp\/mm\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003e3\" x 1\" (76.2 mm x 25.4 mm) Square Wave Ronchi Ruling Target\u003c\/li\u003e\n\u003cli\u003ePatterns with 10 lp\/mm, 20 lp\/mm, 40 lp\/mm, and 80 lp\/mm\u003c\/li\u003e\n\u003cli\u003eLarge 65 mm x 17 mm Clear Aperture\u003c\/li\u003e\n\u003cli\u003eDetermine Resolution, Field Distortion, and Parfocal Stability in an Optical System\u003c\/li\u003e\n\u003cli\u003eLow-Reflectivity, Vacuum-Sputtered Chrome on Soda Lime Glass\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMATERIAL: SODA LIME\u003c\/p\u003e\n\u003cp\u003e2. COATING: OD3 LOW-REFLECTIVITY CHROME\u003c\/p\u003e\n\u003cp\u003e3. CLEAR APERTURE: 65 mm X 17 mm\u003c\/p\u003e\n\u003cp\u003e4. FACE DIMENSION TOLERANCE: 0.5 mm\u003c\/p\u003e\n\u003cp\u003e5. THICKNESS TOLERANCE: 0.2 mm\u003c\/p\u003e\n\u003cp\u003e6. SURFACE FLATNESS: ≤15 µm\u003c\/p\u003e\n\u003cp\u003e7. OPTICAL DENSITY: ≥3.0 AT 430 nm\u003c\/p\u003e\n\u003cp\u003e8. R1L3S15N IS A TEST TARGET WITH A DARK LOW-REFLECTIVITY CHROME PATTERN AND CLEAR BACKGROUND.\u003c\/p\u003e\n\u003cp\u003e9. THE PATTERN IS A CONSTANT-INTERVAL BAR AND SPACE SQUARE WAVE TARGET WITH 80 LP\/mm.\u003c\/p\u003e\n\u003ctable class=\"SpecTable\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth align=\"center\" colspan=\"2\"\u003eOptical Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLR Chrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackground\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Flatness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤15 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Optical Density\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40591893463138,"sku":"T-R1L3S15N","price":265.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/TTN246533-xl.jpg?v=1701285419"},{"product_id":"t-r1l3s14n-ronchi-ruling-test-target-3-x-1-40-lp-mm","title":"T-R1L3S14N - Ronchi Ruling Test Target, 3\" x 1\", 40 lp\/mm","description":"\u003cp\u003eT-R1L3S14N - Ronchi Ruling Test Target, 3\" x 1\", 40 lp\/mm\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003e3\" x 1\" (76.2 mm x 25.4 mm) Square Wave Ronchi Ruling Target\u003c\/li\u003e\n\u003cli\u003ePatterns with 10 lp\/mm, 20 lp\/mm, 40 lp\/mm, and 80 lp\/mm\u003c\/li\u003e\n\u003cli\u003eLarge 65 mm x 17 mm Clear Aperture\u003c\/li\u003e\n\u003cli\u003eDetermine Resolution, Field Distortion, and Parfocal Stability in an Optical System\u003c\/li\u003e\n\u003cli\u003eLow-Reflectivity, Vacuum-Sputtered Chrome on Soda Lime Glass\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMATERIAL: SODA LIME\u003c\/p\u003e\n\u003cp\u003e2. COATING: OD3 LOW-REFLECTIVITY CHROME\u003c\/p\u003e\n\u003cp\u003e3. CLEAR APERTURE: 65 mm X 17 mm\u003c\/p\u003e\n\u003cp\u003e4. FACE DIMENSION TOLERANCE: 0.5 mm\u003c\/p\u003e\n\u003cp\u003e5. THICKNESS TOLERANCE: 0.2 mm\u003c\/p\u003e\n\u003cp\u003e6. SURFACE FLATNESS: ≤15 µm\u003c\/p\u003e\n\u003cp\u003e7. OPTICAL DENSITY: ≥3.0 AT 430 nm\u003c\/p\u003e\n\u003cp\u003e8. R1L3S14N IS A TEST TARGET WITH A DARK LOW-REFLECTIVITY CHROME PATTERN AND CLEAR BACKGROUND.\u003c\/p\u003e\n\u003cp\u003e9. THE PATTERN IS A CONSTANT-INTERVAL BAR AND SPACE SQUARE WAVE TARGET WITH 40 LP\/mm.\u003c\/p\u003e\n\u003ctable class=\"SpecTable\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth align=\"center\" colspan=\"2\"\u003eOptical Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLR Chrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackground\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Flatness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤15 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Optical Density\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40591933014114,"sku":"T-R1L3S14N","price":265.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/TTN246532-xl.jpg?v=1701287213"},{"product_id":"t-r1l3s15n-ronchi-ruling-test-target-3-x-1-80-lp-mm-1","title":"T-R1L3S13N - Ronchi Ruling Test Target, 3\" x 1\", 20 lp\/mm","description":"\u003cp\u003eT-R1L3S13N - Ronchi Ruling Test Target, 3\" x 1\", 20 lp\/mm\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003e3\" x 1\" (76.2 mm x 25.4 mm) Square Wave Ronchi Ruling Target\u003c\/li\u003e\n\u003cli\u003ePatterns with 10 lp\/mm, 20 lp\/mm, 40 lp\/mm, and 80 lp\/mm\u003c\/li\u003e\n\u003cli\u003eLarge 65 mm x 17 mm Clear Aperture\u003c\/li\u003e\n\u003cli\u003eDetermine Resolution, Field Distortion, and Parfocal Stability in an Optical System\u003c\/li\u003e\n\u003cli\u003eLow-Reflectivity, Vacuum-Sputtered Chrome on Soda Lime Glass\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNOTES\/SPECIFICATIONS:\u003c\/p\u003e\n\u003cp\u003e1. MATERIAL: SODA LIME\u003c\/p\u003e\n\u003cp\u003e2. COATING: OD3 LOW-REFLECTIVITY CHROME\u003c\/p\u003e\n\u003cp\u003e3. CLEAR APERTURE: 65 mm X 17 mm\u003c\/p\u003e\n\u003cp\u003e4. FACE DIMENSION TOLERANCE: 0.5 mm\u003c\/p\u003e\n\u003cp\u003e5. THICKNESS TOLERANCE: 0.2 mm\u003c\/p\u003e\n\u003cp\u003e6. SURFACE FLATNESS: ≤15 µm\u003c\/p\u003e\n\u003cp\u003e7. OPTICAL DENSITY: ≥3.0 AT 430 nm\u003c\/p\u003e\n\u003cp\u003e8. R1L3S13N IS A TEST TARGET WITH A DARK LOW-REFLECTIVITY CHROME PATTERN AND CLEAR BACKGROUND.\u003c\/p\u003e\n\u003cp\u003e9. THE PATTERN IS A CONSTANT-INTERVAL BAR AND SPACE SQUARE WAVE TARGET WITH 20 LP\/mm.\u003c\/p\u003e\n\u003ctable class=\"SpecTable\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\" align=\"center\"\u003eOptical Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLR Chrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackground\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Flatness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤15 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Optical Density\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40591944908898,"sku":"T-R1L3S13N","price":268.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/TTN246531-xl.jpg?v=1701287473"},{"product_id":"t-r1l3s12n-ronchi-ruling-test-target-3-x-1-10-lp-mm","title":"T-R1L3S12N - Ronchi Ruling Test Target, 3\" x 1\", 10 lp\/mm","description":"\u003cp\u003eT-R1L3S12N - Ronchi Ruling Test Target, 3\" x 1\", 10 lp\/mm\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003e3\" x 1\" (76.2 mm x 25.4 mm) Square Wave Ronchi Ruling Target\u003c\/li\u003e\n\u003cli\u003ePatterns with 10 lp\/mm, 20 lp\/mm, 40 lp\/mm, and 80 lp\/mm\u003c\/li\u003e\n\u003cli\u003eLarge 65 mm x 17 mm Clear Aperture\u003c\/li\u003e\n\u003cli\u003eDetermine Resolution, Field Distortion, and Parfocal Stability in an Optical System\u003c\/li\u003e\n\u003cli\u003eLow-Reflectivity, Vacuum-Sputtered Chrome on Soda Lime Glass\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNOTES\/SPECIFICATIONS:\u003c\/p\u003e\n\u003cp\u003e1. MATERIAL: SODA LIME\u003c\/p\u003e\n\u003cp\u003e2. COATING: OD3 LOW-REFLECTIVITY CHROME\u003c\/p\u003e\n\u003cp\u003e3. CLEAR APERTURE: 65 mm X 17 mm\u003c\/p\u003e\n\u003cp\u003e4. FACE DIMENSION TOLERANCE: 0.5 mm\u003c\/p\u003e\n\u003cp\u003e5. THICKNESS TOLERANCE: 0.2 mm\u003c\/p\u003e\n\u003cp\u003e6. SURFACE FLATNESS: ≤15 µm\u003c\/p\u003e\n\u003cp\u003e7. OPTICAL DENSITY: ≥3.0 AT 430 nm\u003c\/p\u003e\n\u003cp\u003e8. R1L3S12N IS A TEST TARGET WITH A DARK LOW-REFLECTIVITY CHROME PATTERN AND CLEAR BACKGROUND.\u003c\/p\u003e\n\u003ctable class=\"SpecTable\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth align=\"center\" colspan=\"2\"\u003eOptical Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLR Chrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackground\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Flatness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤15 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Optical Density\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e9. THE PATTERN IS A CONSTANT-INTERVAL BAR AND SPACE SQUARE WAVE TARGET WITH 10 LP\/mm.\u003c\/p\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40591953100898,"sku":"T-R1L3S12N","price":268.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/TTN246529-xl.jpg?v=1701287822"},{"product_id":"t-r1l1s3p-positive-sector-star-test-target-1-x-1-72-bars","title":"T-R1L1S3P - Positive Sector Star Test Target, 1\" x 1\", 72 Bars","description":"\u003cp\u003eT-R1L1S3P - Positive Sector Star Test Target, 1\" x 1\", 72 Bars\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003e1\" x 1\" (25.4 mm x 25.4 mm) Positive Sector Star Targets\u003c\/li\u003e\n\u003cli\u003eDetermine Resolution of an Optical System\u003c\/li\u003e\n\u003cli\u003eLow-Reflectivity, Vacuum-Sputtered Chrome on Soda Lime Glass\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePattern Low-Reflectivity Chrome\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBackground Clear\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSurface Flatness ≤15 µm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eChrome Optical Density ≥3.0 at 430 nm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePattern Outer Diameter 10 mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCenter Circle Diameter 200 µm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNumber of Bars 72 Over 360°\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eResolution at Outer Diameter 2.30 lp\/mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eResolution at Center Circle 115 lp\/mm\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNOTES\/SPECIFICATIONS:\u003c\/p\u003e\n\u003cp\u003e1. MATERIAL: SODA LIME\u003c\/p\u003e\n\u003cp\u003e2. COATING: OD3 LOW-REFLECTIVITY CHROME\u003c\/p\u003e\n\u003cp\u003e3. FACE DIMENSION TOLERANCE: 0.5 mm\u003c\/p\u003e\n\u003cp\u003e4. THICKNESS TOLERANCE: 0.3 mm\u003c\/p\u003e\n\u003cp\u003e5. SURFACE FLATNESS: ≤15 µm\u003c\/p\u003e\n\u003cp\u003e6. OPTICAL DENSITY: ≥3.0 AT 430 nm\u003c\/p\u003e\n\u003cp\u003e7. R1L1S3P IS A POSITIVE TEST TAGET WITH DARK PATTERN AND CLEAR BACKGROUND\u003c\/p\u003e\n\u003cp\u003e8. PATTERN SIZE: WEDGE SHAPED SEGMENT WITH 72 EQUAL BAR AND SPACE WIDTHS (5 DEGREES PER CYCLE OR 2.5 DEGREES PER SPOKE) OVER A 360 DEGREES CIRCUMFERENCE CIRCLE. OVERALL IMAGE SIZE 10mm DIAMETER. THE SMALLEST RESOLVED GRATING PITCH AT THE CENTER\u003c\/p\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40591959064674,"sku":"T-R1L1S3P","price":398.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/QTN005784-xl.jpg?v=1701289235"},{"product_id":"t-r1l1s2p-positive-sector-star-test-target-1-x-1-36-bars","title":"T-R1L1S2P - Positive Sector Star Test Target, 1\" x 1\", 36 Bars","description":"\u003cp\u003eT-R1L1S2P - Positive Sector Star Test Target, 1\" x 1\", 36 Bars\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003e1\" x 1\" (25.4 mm x 25.4 mm) Positive Sector Star Targets\u003c\/li\u003e\n\u003cli\u003eDetermine Resolution of an Optical System\u003c\/li\u003e\n\u003cli\u003eLow-Reflectivity, Vacuum-Sputtered Chrome on Soda Lime Glass\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePattern Low-Reflectivity Chrome\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBackground Clear\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSurface Flatness ≤15 µm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eChrome Optical Density ≥3.0 at 430 nm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePattern Outer Diameter 10 mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCenter Circle Diameter 200 µm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNumber of Bars 36 Over 360°\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eResolution at Outer Diameter 1.15 lp\/mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eResolution at Center Circle 57.5 lp\/mm\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"SGBullet\"\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThe T-R1L1S2P target has 36 bars over 360°. The resolution at the center circle of this target is 57.5 lp\/mm. Alternatively, the R1L1S3P target has 72 bars over 360°, and the resolution at the center is 115 lp\/mm. Both targets also have a \u003c\/span\u003e\u003cspan\u003eØ2\u003c\/span\u003e\u003cspan\u003e00 µm center circle and are useful for determining the resolution of an optical system by noting how close to the center of the pattern an optical system is able to resolve adjacent bars. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eNOTES\/SPECIFICATIONS:\u003c\/p\u003e\n\u003cp\u003e1. MATERIAL: SODA LIME\u003c\/p\u003e\n\u003cp\u003e2. COATING: OD3 LOW-REFLECTIVITY CHROME\u003c\/p\u003e\n\u003cp\u003e3. FACE DIMENSION TOLERANCE: 0.5 mm\u003c\/p\u003e\n\u003cp\u003e4. THICKNESS TOLERANCE: 0.3 mm\u003c\/p\u003e\n\u003cp\u003e5. SURFACE FLATNESS: ≤15 µm\u003c\/p\u003e\n\u003cp\u003e6. OPTICAL DENSITY: ≥3.0 AT 430 nm\u003c\/p\u003e\n\u003cp\u003e7. R1L1S2P IS A POSITIVE TEST TARGET WITH DARK PATTERN AND CLEAR BACKGROUND\u003c\/p\u003e\n\u003cp\u003eHBB8. PATTERN SIZE: WEDGE SHAPED SEGMENT WITH 36 EQUAL BAR AND SPACE WIDTHS (10 DEGREES PER CYCLE OR 5 DEGREES PER SPOKE) OVER A 360 DEGREES CIRCUMFERENCE CIRCLE. OVERALL IMAGE SIZE 10mm DIAMETER. THE SMALLEST RESOLVED GRATING PITCH AT THE CENTER\u003c\/p\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40591976890466,"sku":"T-R1L1S2P","price":285.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/QTN005778-xl.jpg?v=1701289955"},{"product_id":"t-r1ds1p-positive-1951-usaf-test-target-o1","title":"T-R1DS1P - Positive 1951 USAF Test Target, Ø1\"","description":"\u003cp\u003eT-R1DS1P - Positive 1951 USAF Test Target, Ø1\"\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003eØ1\" (Ø25.4 mm) Targets for Alignment in\u003cspan\u003e \u003c\/span\u003eØ1\" Lens Tubes\u003c\/li\u003e\n\u003cli\u003eDetermine Resolution of an Optical System\u003c\/li\u003e\n\u003cli\u003eConforms to MIL-S-150A Standard\u003c\/li\u003e\n\u003cli\u003ePositive and Negative Targets Available\u003c\/li\u003e\n\u003cli\u003eSets of Three Lines Minimize Spurious Resolution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/23875-E0W.pdf?v=1701291661\"\u003e\u003cstrong\u003eProduct Drawing\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ctable class=\"SpecTable\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth colspan=\"3\" align=\"center\"\u003eOptical Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"subhead\"\u003e\n\u003ctd\u003eItem #\u003c\/td\u003e\n\u003ctd\u003eR1DS1P\u003c\/td\u003e\n\u003ctd\u003eR1DS1N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackground\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Flatness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u0026lt;50 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Optical Density\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e≥3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40591989964898,"sku":"T-R1DS1P","price":245.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/23875-xl.jpg?v=1701291558"},{"product_id":"t-r1ds1n-negative-1951-usaf-test-target-o1","title":"T-R1DS1N - Negative 1951 USAF Test Target, Ø1\"","description":"\u003cp\u003eT-R1DS1N - Negative 1951 USAF Test Target, Ø1\"\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003eØ1\" (Ø25.4 mm) Targets for Alignment in\u003cspan\u003e \u003c\/span\u003eØ1\" Lens Tubes\u003c\/li\u003e\n\u003cli\u003eDetermine Resolution of an Optical System\u003c\/li\u003e\n\u003cli\u003eConforms to MIL-S-150A Standard\u003c\/li\u003e\n\u003cli\u003ePositive and Negative Targets Available\u003c\/li\u003e\n\u003cli\u003eSets of Three Lines Minimize Spurious Resolution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/23874-E0W.pdf?v=1701292269\"\u003e\u003cstrong\u003eProduct Drawing\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ctable class=\"SpecTable\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth colspan=\"3\" align=\"center\"\u003eOptical Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"subhead\"\u003e\n\u003ctd\u003eItem #\u003c\/td\u003e\n\u003ctd\u003eT-R1DS1P\u003c\/td\u003e\n\u003ctd\u003eT-R1DS1N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackground\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003eLR\u003cspan\u003e \u003c\/span\u003eChrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Flatness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u0026lt;50 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChrome Optical Density\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e≥3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40591991504994,"sku":"T-R1DS1N","price":245.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/23874-xl.jpg?v=1701291953"},{"product_id":"t-r3l1s1b-birefringent-1951-usaf-test-target-3-x-1","title":"T-R3L1S1B - Birefringent 1951 USAF Test Target, 3\" x 1\"","description":"\u003cp\u003eT-R3L1S1B - Birefringent 1951 USAF Test Target, 3\" x 1\"\u003c\/p\u003e\n\u003cul class=\"SGBullet\"\u003e\n\u003cli\u003eDetermine Resolution of a Polarizing Optical System\u003c\/li\u003e\n\u003cli\u003eBirefringent Target Displays Both Positive and Negative Patterns\u003c\/li\u003e\n\u003cli\u003eConforms to MIL-S-150A Standard\u003c\/li\u003e\n\u003cli\u003e1\" × 3\" (25.4 mm × 76.2 mm) Soda Lime Glass Substrate with Cover Slip\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNOTES\/SPECIFICATIONS:\u003cbr\u003e1. PROTECTIVE GLASS MATERIAL: SCHOTT D 263® * M\u003cbr\u003eSLIDE MATERIAL: SODA-LIME GLASS\u003cbr\u003e2. PROTECTIVE GLASS THICKNESS: 0.17mm\u003cbr\u003e3. MATERIAL: LIQUID CRYSTAL POLYMER\u003cbr\u003e4. RETARDANCE: 280nm\u003cbr\u003e5. RETARDANCE ACCURACY: \u0026lt;λ\/50 @ 633nm\u003cbr\u003e6. RETARDANCE UNIFORMITY: \u0026lt; 10nm\u003cbr\u003e7. SURFACE QUALITY: 60-40 SCRATCH-DIG\u003c\/p\u003e\n\u003ctable class=\"SpecTable\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\" align=\"center\"\u003eOptical Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLiquid Crystal Polymer Between\u003cbr\u003eSoda Lime Glass Slide and\u003cbr\u003eSchott D 263\u003csup\u003e®\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eM Cover Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSlide Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.0 mm (0.04\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCover Slip Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.17 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRetardance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e280 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRetardance Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;λ\/50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRetardance Uniformity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;10 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Fosco Connect","offers":[{"title":"Default Title","offer_id":40591998713954,"sku":"T-R3L1S1B","price":478.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/4509\/files\/CTN020691-xl_1.jpg?v=1701294279"}],"url":"https:\/\/www.fiberoptics4sale.com\/collections\/optical-test-targets.oembed","provider":"Fosco Connect","version":"1.0","type":"link"}