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:
Aug. 29, 1995
Filed:
Apr. 30, 1993
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Abstract
When a predetermined region of a light-transmitting platelike member, such as a front windshield, is divided into a plurality of small parts to detect its optical distortion, and a target is sensed in turn through each small part of the region by image sensing means, according to one aspect of this invention, the target has at least three light emitting points capable of representing at least one angle, according to another aspect of this invention, the target represents at least two segments capable of forming at least one predetermined angle, and according to further aspect of this invention, a plurality of unit targets are arrayed in a predetermined direction, the image sensing means is swung along the above predetermined direction, and the platelike member is rotated in a direction across the predetermined direction.