9mm Diameter x 18mm EFL Aspherized Achromatic Lens

Diameter (mm):

9.00 +0.00/-0.05

Effective Focal Length EFL (mm):

18.00

Back Focal Length BFL (mm):

14.3

Focal Length Specification Wavelength (nm):

587.6

Clear Aperture CA (mm):

8.10

Centering (arcmin):

≤5

Center Thickness CT (mm):

6.00

Center Thickness CT 1 (mm):

4.50

Center Thickness CT 2 (mm):

1.50

Center Thickness Tolerance (mm):

±0.2

Radius R₁ (mm):

11.70

Radius R₂ (mm):

16.90

Radius R₃ (mm):

−352.99

Edge Thickness ET (mm):

5.16

N-LAK8 / N-SF57

Surface Quality:

60-40, glass surfaces only

f/#:

2.00

Numerical Aperture NA:

0.25

Coating:

VIS 0° (425-675nm)

Coating Specification:

R_avg ≤0.4% @ 425 - 675nm

Note:

VIS 0° Coating on First Surface, Second Surface is Aspheric Polymer

Operating Temperature (°C):

-20°C to 80°C

Type:

Achromatic Lens

Wavelength Range (nm):

425 - 675

Asphere Figure Error (μm RMS):

Chromatically Corrected Performance

Regulatory Compliance

RoHS 2015:

Compliant

Reach 209:

Compliant

Product Family Description

Low Cost, Color-Corrected Asphere
Better Color Correction than Standard Achromatic Lenses
Similar Spherical Aberration Correction to Machined Aspheres
Prescription Information Available

TECHSPEC® Aspherized Achromats bridge the gap between color-corrected achromats and spherical aberration corrected aspheres, resulting in cost effective, color corrected aspheric components. The TECHSPEC® doublet lenses consist of two cemented elements that are matched for their color-correction ability and small RMS spot size.

The second surface of the doublet is fused with a molded polymer aspheric surface. These molds create a stable aspheric contour, removing or reducing wavefront errors present in typical achromats while boosting numerical aperture. Typical applications include: fiber optic focusing or collimation, image relay, inspection, scanning and high numerical aperture imaging.

These lenses won the 2008 Prism Award for Optics and Optical Components.