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

25mm Dia. x 275mm FL, VIS-NIR, Inked, Achromatic Lens

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Stock #49-367-INK Other Coating Options
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$121.00
Qty 1-5
$121.00
Qty 6+
$102.80
Volume Pricing
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Diameter (mm):
25.00 ±0.025
Effective Focal Length EFL (mm):
275.00
Focal Length Tolerance (%):
±2
Back Focal Length BFL (mm):
271.60
Focal Length Specification Wavelength (nm):
587.6
Clear Aperture CA (mm):
24.00
Centering (arcmin):
<1
Center Thickness CT 1 (mm):
5.00
Center Thickness CT 2 (mm):
2.20
Center Thickness Tolerance (mm):
±0.2
Radius R1 (mm):
171.03
Radius R2 (mm):
-121.54
Radius R3 (mm):
-352.46
Edge Thickness ET (mm):
6.82
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Quality:
40-20
f/#:
11.00
Numerical Aperture NA:
0.05
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:
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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