Name: 6mm Dia. x 18mm FL Uncoated, Double-Convex Lens
Brand: TECHSPEC
SKU: 32-966
Price: C$37.46

6mm Dia. x 18mm FL Uncoated, Double-Convex Lens

Diameter (mm):

6.00 +0.0/-0.025

Back Focal Length BFL (mm):

17.26

Effective Focal Length EFL (mm):

18.00

Coating:

Uncoated

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):

2.20

Center Thickness Tolerance (mm):

±0.05

Edge Thickness ET (mm):

1.70

Radius R₁=-R₂ (mm):

18.22

Clear Aperture CA (mm):

5.4

f/#:

3.00

Focal Length Specification Wavelength (nm):

587.6

Focal Length Tolerance (%):

±1

Numerical Aperture NA:

0.17

Type:

Double-Convex Lens

Wavelength Range (nm):

350 - 2200

Regulatory Compliance

RoHS 2015:

Compliant

Reach 219:

Compliant

Product Family Description

Ideal for Imaging Applications
Minimize Aberrations Including Spherical and Coma
UV Fused Silica DCX Lenses Available
Anti-Reflection Coating Options: MgF₂, VIS 0°, VIS-NIR, NIR I, NIR II, VIS-EXT, and YAG-BBAR

TECHSPEC® Uncoated 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 Uncoated Double-Convex Lenses are available in a variety of substrates and coating options for the visible and NIR spectra.

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