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. 19, 1980
Filed:
Sep. 08, 1978
David J Whitehouse, Melton Mowbray, GB;
John Jungles, Thurmaston, GB;
The Rank Organisation Limited, London, GB;
Abstract
An optical sensing instrument for detecting specular and/or non-specular reflections of light from a surface under test has a sensor head with a plane face having a semi-circular recess in which are housed a plurality of light sources and a plurality of photodetectors each having an associated lens, the optical axis of which passes through the center of curvature of the semi-circular recess. The photodetectors and the light sources are positioned such that respective source/detector pairs are located on optical axes which form mirror angles with respect to the axis of symmetry of the sensing head. Means are provided for simultaneously energizing one or more selected light sources and one or more of the photodetectors.