Meniscus Lenses - Lenses - BTMT | Beijing Trans Manufacture and Trade Co., Ltd.

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Meniscus Lenses

Meniscus lenses can be used with another lens to produce longer or shorter focal lengths. These lenses do not introduce additional spherical aberration or coma in the systems.

Specifications

Material
Crown, Flint, UVFS
Focal Length Tolerance
± 0.5%
Diameter Tolerance
+0/-0.2mm
Thickness Tolerance
± 0.2mm
Surface Flatness
λ/10
Centration Error
<3'
Surface Quality
>90% of central diameter
Coating
According to the requirements

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