Name: 15mm Dia. x 60mm FL, VIS-NIR Inked, Double-Convex Lens
Brand: TECHSPEC
SKU: 63-674-INK
Price: £46.75

15mm Dia. x 60mm FL, VIS-NIR Inked, Double-Convex Lens

Diameter (mm):

15.00 ±0.025

Back Focal Length BFL (mm):

59.00

Effective Focal Length EFL (mm):

60.00

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):

3.00

Center Thickness Tolerance (mm):

±0.10

Edge Thickness ET (mm):

2.08

Radius R₁=-R₂ (mm):

61.50

Clear Aperture CA (mm):

14.00

f/#:

4.00

Focal Length Specification Wavelength (nm):

587.6

Focal Length Tolerance (%):

±1

Numerical Aperture NA:

0.13

Type:

Double-Convex Lens

Typical Energy Density Limit:

5 J/cm² @ 532nm, 10ns

Wavelength Range (nm):

400 - 1000

Regulatory Compliance

RoHS:

Compliant

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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