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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

12.7mm Dia. x 31.8mm FL, VIS-NIR, Inked, Achromatic Lens

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Stock #49-787-INK
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$95.00
Qty 1-5
$95.00
Qty 6+
$80.80
Volume Pricing
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Diameter (mm):
12.70 ±0.025
Effective Focal Length EFL (mm):
31.75
Focal Length Tolerance (%):
±2
Back Focal Length BFL (mm):
28.83
Focal Length Specification Wavelength (nm):
587.6
Clear Aperture CA (mm):
11.70
Centering (arcmin):
<1
Center Thickness CT 1 (mm):
4.00
Center Thickness CT 2 (mm):
1.75
Center Thickness Tolerance (mm):
±0.2
Radius R1 (mm):
21.13
Radius R2 (mm):
-16.69
Radius R3 (mm):
-61.73
Edge Thickness ET (mm):
4.45
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Quality:
40-20
f/#:
2.5
Numerical Aperture NA:
0.20
Coating:
VIS-NIR (400-1000nm)
Coating Specification:
Rabs ≤0.25% @ 880nm
Ravg ≤1.25% @ 400 - 870nm
Ravg ≤1.25% @ 890 - 1000nm
Power (P-V) @ 632.8nm:
1.5λ
Irregularity (P-V) @ 632.8nm:
λ/4
Bevel:
Protective bevel as needed
Type:
Achromatic Lens
Wavelength Range (nm):
400 - 1000

Regulatory Compliance

RoHS 2015:
REACH 201:
Certificate of Conformance:

Product Family Description

  • Designed for 0° Angle of Incidence
  • Less Than 0.25% Reflectance Per Surface @ 880nm
  • MgF2 and VIS 0° Coated Achromats Also Available

Achromatic lenses consist of two optical components cemented together to form an achromatic doublet which is computer optimized to correct for on-axis spherical and chromatic aberrations. Magnesium Fluoride coated and VIS 0° coated achromats also available.

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