Light wavefront measuring instrument, light wavefront...

Details Light wavefront measuring instrument, light wavefront... Light wavefront measuring instrument, light wavefront...

2003-11-17

2009-06-30

Chowdhury, Tarifur (Department: 2886)

Optics: measuring and testing

By light interference

Having wavefront division

Reexamination Certificate

active

07554675

ABSTRACT:
A light wavefront measuring apparatus (2, 2a, 42) includes a separating element (7a, 47a) for separating a flux of light which exits from an optical head (1, 31) into a first beam and a second beam, a first interference fringe display section (21, 21a) for displaying interference fringes formed from the first beam, a Dove prism (13, 53) for rotating a wavefront of the second beam around its optical axis (AX2), and a second interference fringe display section (22, 22a) for displaying interference fringes formed from the second beam which passed through it. In adjustment of the light source device, position of a collimator (5) in the optical head (1, 31) is adjusted in optical axis direction so as to approximate the interference fringe patterns displayed in the interference fringe display sections (21, 22, 21a, 22a) each other.

REFERENCES:
patent: 4804269 (1989-02-01), Elterman
patent: 5157459 (1992-10-01), Oono et al.
patent: 5317144 (1994-05-01), Oono et al.
patent: 5410532 (1995-04-01), Ohno et al.
patent: 5557598 (1996-09-01), Oono et al.
patent: 6469788 (2002-10-01), Boyd et al.
patent: 0 204 495 (1986-12-01), None
patent: 61-281209 (1986-12-01), None
patent: 63-38103 (1988-02-01), None
patent: 3-119524 (1991-05-01), None
patent: 2002-182091 (2002-06-01), None
Technical Paper of Optical Storage International SPIE vol. 695 Optical Mass Data Storage II (1986) pp. 206-214. Oudenhuysen et al., “Optical Component Inspection for Data Storage Applications”.

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