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Bi-concave lens
Moonlight Optics China

  • bi-concave lens Moonlight Optics China
This kind of lens with different or equal radius of curvature on both surfaces, diverges collimated incident light, and forms only virtual images that are seen through the lens. It is often used to expand light beams or to increase focal length in existing systems.

Specifications

Dimensions Tolerance 0.0/-0.15mm
Paraxial Focal Length Tolerance ±2%
Centration Tolerance 3 arc minutes
Clear Aperture 90%
Surface Quality 60/40
Bevel 0.25mm at 45 deg

More specifications



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