6mm Dia. x -12mm FL, NIR I Coated, Double-Concave Lens

Diameter (mm):

6.00 +0.0/-0.025

Effective Focal Length EFL (mm):

-12.00

N-BK7

f/#:

2.00

Numerical Aperture NA:

0.25

Coating:

NIR I (600-1050nm)

Type:

Double-Concave Lens

Wavelength Range (nm):

600 - 1050

Back Focal Length BFL (mm):

-12.33

Bevel:

Protective bevel as needed

Center Thickness CT (mm):

1.00

Center Thickness Tolerance (mm):

±0.05

Centering (arcmin):

Clear Aperture CA (mm):

5.4

Coating Specification:

R_avg ≤0.5% @ 600 - 1050nm

Edge Thickness ET (mm):

1.59

Focal Length Specification Wavelength (nm):

587.6

Focal Length Tolerance (%):

±1

Radius R₁=-R₂ (mm):

-12.57

Surface Quality:

40-20

Typical Energy Density Limit:

7 J/cm² @ 1064nm, 10ns

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Regulatory Compliance

RoHS 2015:

Compliant

Reach 224:

Compliant

Certificate of Conformance:

View

Product Family Description

AR Coated to Provide <0.5% Reflectance per Surface for 600 - 1050nm
Designed for 0° Angle of Incidence
Various Coating Options: Uncoated, MgF₂, VIS 0°, VIS-NIR, and NIR II

Double-Concave (DCV) Lenses have two inward curved surfaces and a negative focal length. They are used for image reduction and to spread light.

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