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See all 48 Products in Family

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

20mm Diameter x -30 FL, VIS-NIR Coated, Plano-Concave Lens

TECHSPEC VIS-NIR Coated Plano-Concave (PCV) Lenses

Stock #45-919

£34.85

Qty 1-9
£34.85

Qty 10
£31.37

Volume Pricing
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Code V Curves eDrawings: eprt IGES ISO PDF Drawings STEP: stp Zemax: zar Zemax: zmx

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Diameter (mm):

20.00 +0.0/-0.025

Effective Focal Length EFL (mm):

-30.00

Back Focal Length BFL (mm):

-31.96

Coating:

VIS-NIR (400-1000nm)

Coating Specification:

R_abs ≤0.25% @ 880nm
R_avg ≤1.25% @ 400 - 870nm
R_avg ≤1.25% @ 890 - 1000nm

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):

±0.10

Focal Length Tolerance (%):

±1

Focal Length Specification Wavelength (nm):

587.6

Centering (arcmin):

Clear Aperture CA (mm):

19.00

Edge Thickness ET (mm):

5.39

Radius R₁ (mm):

-23.54

f/#:

1.5

Numerical Aperture NA:

0.33

Bevel:

Protective bevel as needed

Type:

Plano-Concave Lens

Typical Energy Density Limit:

5 J/cm² @ 532nm, 10ns

Wavelength Range (nm):

400 - 1000

Regulatory Compliance

RoHS 2015:

Compliant

Reach 209:

Compliant

Product Family Description

AR Coated to Provide <1.25% Reflectance per Surface for 400 - 1000nm
<0.25% Reflectance @ 880nm
Designed for 0° Angle of Incidence
Various Coating Options: Uncoated, MgF₂, VIS 0°, 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.