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

25mm Dia. x 250mm FL, VIS 0° Coated, Achromatic Lens

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Stock #47-647 Other Coating Options
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€106,00
Qty 1-5
€106,00
Qty 6+
€93,00
Volume Pricing
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Specifications

Diameter (mm):
25.00 +0.0/-0.025
Effective Focal Length EFL (mm):
250.00
Focal Length Tolerance (%):
±2
Back Focal Length BFL (mm):
246.63
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):
2.50
Center Thickness Tolerance (mm):
±0.2
Radius R1 (mm):
160.73
Radius R2 (mm):
-105.64
Radius R3 (mm):
-295.75
Edge Thickness ET (mm):
6.75
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Quality:
40-20
f/#:
10.00
Numerical Aperture NA:
0.05
Coating:
VIS 0° (425-675nm)
Coating Specification:
Ravg ≤0.4% @ 425 - 675nm
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):
425 - 675

Regulatory Compliance

RoHS 2015:
Reach 219:

Learn More

Product Family Description

  • Designed for 0° Angle of Incidence
  • Less Than 0.4% Reflectance Per Surface from 425 - 675nm
  • MgF2 and VIS-NIR 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.

Technical Information

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