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:
Oct. 24, 1989
Filed:
Oct. 15, 1987
Gunter Fetzer, Gundelfingen, DE;
Erwin Sick GmbH Optik-Electronik, Waldkirch, DE;
Abstract
Light from a scanning device is directed onto a row of inclined strip mirrors 11a, 11b, 11c which are arranged one behind the other and laterally displaced relative to each other at an angle of 45.degree. to the incident light beam 16'. The strip mirrors form the incident light into a number of light curtains 13a, 13b, 13c corresponding to the number of mirrors, with the individual light curtains being laterally displaced in the same way as the strip mirrors. The individual light curtains then fall onto a corresponding number of deflecting mirrors 12a, 12b, 12c which are set at an angle of 45.degree. to the incident light curtains. The deflecting mirrors thus deflect the light curtains through an angle 90.degree. and indeed into the same plane so that the undesired lateral displacement is cancelled and a broad light curtain is achieved which extends in a single plane.