Apparatus and a method for measurement of wedge in optical compo

Details Apparatus and a method for measurement of wedge in optical compo Apparatus and a method for measurement of wedge in optical compo

1998-06-09

2000-06-06

Rosenberger, Richard A.

Optics: measuring and testing

Lens or reflective image former testing

For optical transfer function

356376, 3562431, 356244, G01B 1124

Patent

active

060725699

ABSTRACT:
According to one aspect of the present invention, a method for determining orientation of one surface of an optical component relative to another surface of the optical component comprises: (a) placing the optical component into a test fixture having certain characteristics from which differences in test fixture orientation and position can be determined, so that the one surface of the optical component is accessible in one orientation of the test fixture and the other surface of the optical component is accessible in another orientation of the test fixture; (b) measuring surface profile and orientation of the one surface of the optical component with the test fixture in one orientation; (c) measuring surface profile and orientation of the second surface of the optical component with the test fixture in second orientation; and (d) determining profile and relative orientation of the one surface of the optical component with respect to the another surface of the optical component by nulling out differences between the first and second orientation of the test fixture.

REFERENCES:
patent: 4537473 (1985-08-01), Maschmeyer
patent: 5175601 (1992-12-01), Fitts
patent: 5262835 (1993-11-01), Lindquist et al.
patent: 5831719 (1998-11-01), Berg et al.

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