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LSC37-12.7-020-A

Visible-Band Negative Achromatic Lens, 12.70 mm Diameter, -20.00 mm EFL — LSC37-12.7-020-A

Visible-band negative achromatic lens with signed negative focal length.

$53 USD

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Technical Specifications

Diameter (mm)

12.70

Effective focal length (mm)

-20.00

Center thickness (mm)

4.50

Coating

Average reflectance below 0.5% (350–700 nm)

Optical material

Optical glass (grade under review)

Diameter tolerance

+0.0/-0.1 mm

Center thickness tolerance

±0.2 mm

Surface irregularity

λ/4 @632.8 nm

EFL tolerance

±2%

Centration

3–5 arcmin

Surface quality

60/40

Bevel

0.2 mm × 45°

Edge thickness (mm)

6.3

Back focal length (mm)

-22.3