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Optical Cylindrical lens

Optical Cylindrical lens

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Cylindrical lenses have at least one surface that is formed like a portion of a cylinder. Cylindrical lenses are used to correct astigmatism in the eye, and, in rangefinders, to produce astigmatism, stretching a point of light into a line. Some styles of cylindrical lenses have antireflective coatings to increase the transmission of light through the lens.

Material bk7 grade a optical glass

Design index 1.5183+/-0.0005@546.1

Diameter tolerance –0.00/-0.15

Thickness tolerance: +/-0.10mm

Foci tolerance: +/-2%@6333nm

Centration: <;;3 arc minute

Surface quality: 60-40

Surface figure: λ/4@633nm

Clear aperture: central 85%of diameter

Bevel: 0.25mm*45º

Coating: specified by coustomer

Note: including

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