Hyperbolic Mirrors

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Hyperbolic mirrorsHyperbolic mirrors from Optical Surfaces Ltd. are designed for deep space observation telescopes and earth observation satellites.

Hyperbolic mirrors are used in a telescope design to correct certain distortions caused by an extremely fast f-ratio design. A hyperbolic secondary mirror is used in Cassegrain telescopes to correct the spherical aberration caused by shorter focal length of the parabolic primary. The mirrors can be produced at up to 500 mm in diameter with typical wave front error of λ/20 PV, surface finish of 10/5, and microroughness of <1.2 nm RMS.

The hyperbolic mirrors can be supplied mounted or mounted and with a coating exactly optimized for user applications. In space-borne telescope platforms where weight is an issue, users can choose from lightweight production options.

Published: August 2019
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