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See all 25 Products in Family

25.0mm Diameter x -25 FL, MgF₂ Coated, Plano-Concave Lens

Stock #45-031

£26.78

Qty 1-9
£26.78

Qty 10-24
£24.14

Qty 25+
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Curves eDrawings: eprt IGES PDF Drawings STEP: stp Zemax: zmx

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Diameter (mm):

25.00 +0.0/-0.025

Effective Focal Length EFL (mm):

-25.00

Back Focal Length BFL (mm):

-26.96

Coating:

MgF₂ (400-700nm)

Coating Specification:

R_avg ≤1.75% @ 400 - 700nm

Substrate:

N-SF11

Surface Quality:

40-20

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Center Thickness CT (mm):

3.50

Center Thickness Tolerance (mm):

±0.1

Focal Length Tolerance (%):

±1

Focal Length Specification Wavelength (nm):

587.6

Centering (arcmin):

Clear Aperture CA (mm):

24.00

Edge Thickness ET (mm):

7.41

Radius R₁ (mm):

-19.62

f/#:

1.00

Numerical Aperture NA:

0.50

Bevel:

Protective bevel as needed

Type:

Plano-Concave Lens

Typical Energy Density Limit:

10 J/cm² @ 532nm, 10ns

Wavelength Range (nm):

400 - 700

RoHS:

Compliant

Product Family Description

AR Coated to Provide <1.75% Reflectance per Surface for 400 - 700nm
Designed for 0° Angle of Incidence
Various Coating Options: Uncoated, VIS 0°, VIS-NIR, NIR I, and NIR II

Plano-Concave (PCV) lenses have one flat and one inward curved surface. PCV lenses have a negative focal length and are used for image reduction or to spread light.