Apparatus for inspecting certain optical parameters of a mirror

Details Apparatus for inspecting certain optical parameters of a mirror Apparatus for inspecting certain optical parameters of a mirror

1991-02-13

1992-03-10

Haroian, Harry N.

Geometrical instruments

Gauge

Lens

33533, G01B 522

Patent

active

050940058

ABSTRACT:
The real surface of the mirror is represented by a set of values corresponding to radial or approximately radial distances between points distributed over the surface of the mirror and a spherical reference surface. The method is implemented by using apparatus comprising a support provided with at least three abutments suitable for supporting the support and distributed or suitable for being distributed as points on the surface of a sphere, the support also carrying at least one distance sensor. The invention is particularly suitable for inspecting the optical parameters of a plane, spherical, or aspherical mirror, and in particular mirrors for telescopes.

REFERENCES:
patent: 917097 (1909-04-01), Michelsen
patent: 4693012 (1987-09-01), Cesna

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