Optical element inspection device and optical element...

Details Optical element inspection device and optical element... Optical element inspection device and optical element...

2005-04-26

2005-04-26

Lauchman, Layla G. (Department: 2877)

Optics: measuring and testing

Position or displacement

C356S124000

Reexamination Certificate

active

06885465

ABSTRACT:
The invention provides an optical element inspection device and an optical element inspection method capable of inspecting a relative position of each reflective surface of an optical element. An optical element inspection device includes a pedestal with a cross-dichroic prism installed thereon, an autocollimator which introduces the measurement light into any of four reflective surfaces at the angle of incidence of 45°, and detects the return light thereof, and a switching device to introduce the measurement light into only either a left area or a right area. The relative position between two reflective surfaces of each color reflective surface can be easily inspected by introducing the measurement light in only the reflective surface of either area of the color reflective surface by a switching device.

REFERENCES:
patent: 2000-221588 (2000-08-01), None
patent: 2000-258859 (2000-09-01), None

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