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

25mm Dia. x -50mm FL, VIS 0° Coated, Double-Concave Lens

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Stock #47-918 In Stock
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S$67.79
Qty 1-9
S$67.79
Qty 10+
S$60.90
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Specifications

General

Type:
Double-Concave Lens

Physical & Mechanical Properties

Diameter (mm):
25.00 +0.0/-0.025
Bevel:
Protective bevel as needed
Center Thickness CT (mm):
2.50
Center Thickness Tolerance (mm):
±0.10
Centering (arcmin):
<1
Clear Aperture CA (mm):
24.00
Edge Thickness ET (mm):
5.40

Optical Properties

Effective Focal Length EFL (mm):
-50.00
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
f/#:
2.00
Numerical Aperture NA:
0.25
Coating:
VIS 0° (425-675nm)
Wavelength Range (nm):
425 - 675
Back Focal Length BFL (mm):
-50.82
Coating Specification:
Ravg ≤0.4% @ 425 - 675nm
Focal Length Specification Wavelength (nm):
587.6
Focal Length Tolerance (%):
±1
Radius R1=-R2 (mm):
-52.10
Surface Quality:
40-20
Damage Threshold, Reference: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
5 J/cm2 @ 532nm, 10ns
Power (P-V) @ 632.8nm:
1.5λ
Irregularity (P-V) @ 632.8nm:
λ/4

Regulatory Compliance

RoHS 2015:
Reach 219:
Certificate of Conformance:

Product Details

TECHSPEC® VIS 0°  Coated Double-Concave (DCV) Lenses are designed to have two inward curved surfaces and a negative focal length similar to Plano-Concave (PCV) lenses. These lenses can be used for balancing aberrations created by other lenses within a system due to their negative spherical aberration. Double-Concave (DCV) lenses are commonly used in a variety of applications including image reduction, beam expansion and telescopes TECHSPEC® VIS 0° Coated Double-Concave (DCV) Lenses are best used in 0° angle of incidence situations and provide optimized transmission in the 425nm – 675nm range. These lenses are also available Uncoated, VIS-EXTMgF2VIS-NIRNIR I, or with NIR II AR coating options.

Technical Information

Coating Curves

  • VIS 0° (425-675nm)
Only 2 different Y Axises can be displayed at one time.

Please note that coating performance outside each product’s specified design range is theoretical and may vary.

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