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15mm Dia. x 20mm FL, VIS-NIR Coated, Achromatic Lens

Stock #49-953
$85.50
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Qty 1-5
$85.50
Qty 6
$68.40
Volume Pricing
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Diameter (mm):
15.00 +0.0/-0.025
Effective Focal Length EFL (mm):
20.00
Focal Length Tolerance (%):
±2
Back Focal Length BFL (mm):
15.34
Focal Length Specification Wavelength (nm):
587.6
Clear Aperture CA (mm):
14.00
Centering (arcmin):
<1
Center Thickness CT 1 (mm):
6.80
Center Thickness CT 2 (mm):
2.00
Center Thickness Tolerance (mm):
±0.2
Radius R1 (mm):
14.01
Radius R2 (mm):
-11.36
Radius R3 (mm):
-44.21
Edge Thickness ET (mm):
5.98
Substrate:
Surface Quality:
40-20
f/#:
1.33
Numerical Aperture NA:
0.38
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:

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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