Optical system for surface verification

Details Optical system for surface verification Optical system for surface verification

1991-01-07

1993-09-07

Gonzalez, Frank

Optics: measuring and testing

By polarized light examination

With light attenuation

356376, G01B 1130

Patent

active

052434052

ABSTRACT:
An optical system (10) that images a section of a textured surface and through non-symetrical optics creates a unique integrated image of its topology which allows specific identifications to be recorded and compared at a later date. A recording device (60) is mounted at the rear of a cylinder spread lens assembly (26) which in turn attaches to a lens support tube (28) that is clamped by a lens support assembly (50) that traverses along a vee-track (52). A spherical achromatic lens (24) images an illuminated surface (30) of the textured surface upon a cylinder spread lens (26b) which then presents a image to the detector/recording surface (34). The system (10) is initially located normal to the illuminated surface (30) at an acute illumination angle .phi..sub.1 for coarse positioning. An illuminated image line (32) for the acute angle .phi..sub.1 is supplied by a lamp (14) via a light mask (16) and a cylinder lens (22). After the textured surface is positioned, the system is moved to a position along the vee-track at an acute angle of reflection .phi..sub.2 for precise surface identification and recording.

REFERENCES:
patent: 3866038 (1975-02-01), Korth
patent: 4735508 (1988-04-01), Bellio
patent: 4929846 (1990-05-01), Mansour
patent: 5078496 (1992-01-01), Parker et al.
patent: 5125741 (1992-06-01), Okada et al.
patent: 5125746 (1992-06-01), Lipshitz

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