The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 1993
Filed:
Jan. 07, 1991
Clyde L Tichenor, Van Nuys, CA (US);
Irwin Ginsburgh, Newhall, CA (US);
Other;
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.