Name: 40mm Dia. x 80mm FL, VIS-NIR Coated, Double-Convex Lens
Brand: TECHSPEC
SKU: 33-422
Price: €68,25

40mm Dia. x 80mm FL, VIS-NIR Coated, Double-Convex Lens

Diameter (mm):

40.00 +0.0/-0.025

Back Focal Length BFL (mm):

77.32

Effective Focal Length EFL (mm):

80.00

Coating:

VIS-NIR (400-1000nm)

Coating Specification:

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

N-BK7

Surface Quality:

40-20

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Centering (arcmin):

Bevel:

Protective bevel as needed

Center Thickness CT (mm):

8.00

Center Thickness Tolerance (mm):

±0.10

Edge Thickness ET (mm):

3.00

Radius R₁=-R₂ (mm):

81.3

Clear Aperture CA (mm):

39.00

f/#:

2.00

Focal Length Specification Wavelength (nm):

587.6

Focal Length Tolerance (%):

±1

Numerical Aperture NA:

0.25

Type:

Double-Convex Lens

Typical Energy Density Limit:

5 J/cm² @ 532nm, 10ns

Wavelength Range (nm):

400 - 1000

5 J/cm² @ 532nm, 10ns

Regulatory Compliance

RoHS 2015:

Compliant

Reach 224:

Compliant

Certificate of Conformance:

View

Product Family Description

AR Coated to Provide <1.25% Reflectance per Surface for 400 - 1000nm
Minimize Aberrations Including Spherical and Coma
UV Fused Silica DCX Lenses Available
Other Coating Options Available: Uncoated, MgF₂, VIS 0°, NIR I, NIR II, VIS-EXT, and YAG-BBAR

TECHSPEC® VIS-NIR Coated Double-Convex (DCX) Lenses, also referred to as bi-convex lenses, have two positive, symmetrical faces with equal radii on both sides. These lenses are generally recommended for finite imaging applications with a conjugate ratio (ratio between object distance and image distance) between 0.2 and 5. At a conjugate ratio of 1, aberrations such as spherical aberration, chromatic aberration, coma, and distortion are minimized or cancelled due to the symmetric lens design. TECHSPEC VIS-NIR Coated Double-Convex Lenses are available in a variety of substrates and coating options for the visible and NIR spectra.

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