foscoconnect.com
sales@foscoconnect.com
(510) 319-9878
Silicon Valley, CA, USA
sales@foscoconnect.com
(510) 319-9878
Silicon Valley, CA, USA
E-85877 6.25mm Dia x -10mm FL VIS-NIR Coated, Negative Achromatic Lens
Diameter (mm): 6.25 +0.0/-0.025
Effective Focal Length EFL (mm): -10.00
Focal Length Tolerance (%): ±1
Back Focal Length BFL (mm): -11.92
Focal Length Specification Wavelength (nm): 587.6
Clear Aperture CA (mm): 5.6
Centering (arcmin): <3
Center Thickness CT 1 (mm): 1.00
Center Thickness CT 2 (mm): 2.5
Center Thickness Tolerance (mm): ±0.20
Radius R1 (mm): 6.55
Radius R2 (mm): 5.10
Radius R3 (mm): 89.10
Edge Thickness ET (mm): 4.2
f/#: 1.6
Numerical Aperture NA: 0.31
Coating: VIS-NIR (400-1000nm)
Coating Specification:
Ravg ≤1.25% @ 400 - 870nm
Ravg ≤1.25% @ 890 - 100nm
Rabs ≤0.25% @ 880nm
Ravg ≤1.25% @ 890 - 100nm
Rabs ≤0.25% @ 880nm
Power (P-V) @ 632.8nm: 1.5λ
Irregularity (P-V) @ 632.8nm: λ/4
Bevel: Protective bevel as needed
Type: Negative Achromatic Lens
Wavelength Range (nm): 400 - 1000
Product Family Description
- VIS 0° and VIS-NIR Coatings
- 6.25 – 25mm Diameter Options
TECHSPEC® Broadband AR Coated Negative Achromatic Lenses are corrected for color and on-axis aberrations. These lenses, consisting of two optical elements cemented together, are commonly used as Barlow lenses to extend focal lengths. TECHSPEC® Broadband AR Coated Negative Achromatic Lenses are available in various diameter sizes and VIS 0° or VIS-NIR coating options.