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:
Mar. 31, 1987
Filed:
Dec. 15, 1983
Michael A Fortin, Santa Clara, CA (US);
Other;
Abstract
An autocollimation method and apparatus are disclosed wherein a primary image of the reticle and a secondary image of the primary image which has been telescopically directed to and reflected from a remote reflecting surface are superimposed on a video display. The primary image of the reticle is produced along a first optical path and the secondary image of the reticle along second optical path including Cassegrainian focusing telescopic optical elements. The optical paths are provided with a commonly shared portion for alternatively positioning means of different optical magnification. Alternative magnification are provided for producing first and second images on the video display for first coarse and then fine determinations and/or adjustments.