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Bi-Concave Lenses
Bi-Concave Lenses

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Bi-Concave Lenses
Diameter Tolerance: +0/-0.1mm
Focal Length: +/-2%
Centration: < 3 arc minutes
Clear Aperture: >95%

Bi-Concave Lenses

 

Negative lens with the form most suited to producing diverging light or a virtual image, where the input light is converging.

 

Materials: BK7 grade A optical glass

 

Design Wavelength: 546.1nm

Design Index: 1.5187

Diameter Tolerance: +0/-0.1mm

Focal Length: ±2%

Centration: < 3 arc minutes

Clear Aperture: >95%

Surface Figure: l/4 @ 632.8nm

Surface Quality: III

Bevel: 0.2mm to 0.5mm×45°

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