T-R2L2S1N - Negative NBS 1963A Resolution Target, 2" x 2", 1 to 18 cycles/mm
T-R2L2S1N - Negative NBS 1963A Resolution Target, 2" x 2", 1 to 18 cycles/mm
- Frequencies from 1 to 228 cycles/mm (See List Below)
- Determine Resolution of an Optical System
- 2" x 2" (50.8 mm x 50.8 mm) Soda Lime Glass Substrate
- Positive and Negative Targets Available
| Optical Specifications | ||
|---|---|---|
| Item # | T-R2L2S1P | T-R2L2S1N |
| Pattern | LRa Chrome | Clear |
| Background | Clear | LR Chrome |
| Surface Flatness | ≤15 µm | |
| Chrome Optical Density | ≥3.0 | |
Frequencies (cycles/mm)
| • 1 | • 2.2 | • 5 | • 11 | |
| • 1.1 | • 2.5 | • 5.6 | • 12.5 | |
| • 1.25 | • 2.8 | • 6.3 | • 14 | |
| • 1.4 | • 3.2 | • 7.1 | • 16 | |
| • 1.6 | • 3.6 | • 8 | • 18 | |
| • 1.8 | • 4 | • 9 | ||
| • 2 | • 4.5 | • 10 |
NOTES/SPECIFICATIONS:
1. MATERIAL: SODA LIME
2. COATING: OD3 LOW-REFLECTIVITY CHROME
3. FACE DIMENSION TOLERANCE: 0.5 mm
4. THICKNESS TOLERANCE: 0.2 mm
5. SURFACE FLATNESS: ≤15 µm
6. OPTICAL DENSITY: ≥3.0 AT 430 nm
7. R2L2S1N IS A NEGATIVE TEST TARGET WITH CLEAR PATTERN AND DARK BACKGROUND 8. THE PATTERN IS NBS1963A TEST PATTERN WITH RESOLUTION FROM 1.0 LP/mm TO 18 LP/mm