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

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

Name: 25mm Dia. x -25mm FL, VIS 0° Coated, Double-Concave Lens
Brand: TECHSPEC
SKU: 47-917
Price: ₹3,915

Stock #47-917 10 to 12 days Other Coating Options

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₹3,915

Qty 1-9
₹3,915

Qty 10+
₹3,524

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Specifications
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Diameter (mm):

25.00 +0.0/-0.025

Effective Focal Length EFL (mm):

-25.00

N-SF11

f/#:

1.00

Numerical Aperture NA:

0.50

Coating:

VIS 0° (425-675nm)

Type:

Double-Concave Lens

Wavelength Range (nm):

425 - 675

Back Focal Length BFL (mm):

-25.69

Bevel:

Protective bevel as needed

Center Thickness CT (mm):

2.50

Center Thickness Tolerance (mm):

±0.10

Centering (arcmin):

Clear Aperture CA (mm):

24.00

Coating Specification:

R_avg ≤0.4% @ 425 - 675nm

Edge Thickness ET (mm):

6.05

Focal Length Specification Wavelength (nm):

587.6

Focal Length Tolerance (%):

±1

Radius R₁=-R₂ (mm):

-39.78

Surface Quality:

40-20

5 J/cm² @ 532nm, 10ns

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Regulatory Compliance

RoHS 2015:

Compliant

Certificate of Conformance:

View

Reach 235:

Compliant

Product Family Description

AR Coated to Provide <0.4% Reflectance per Surface for 425 - 675nm
Designed for 0° Angle of Incidence
Various Coating Options: Uncoated, VIS-EXT, MgF₂, VIS-NIR, NIR I, and NIR II

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-EXT, MgF₂, VIS-NIR, NIR I, or with NIR II AR coating options.