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. 08, 1988
Filed:
Mar. 14, 1986
Takashi Sugihara, Nara, JP;
Masaya Hijikigawa, Yamatokoriyama, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A pressure sensor element includes a polymer optical conductor which includes a substrate, a first organic polymer film formed on the substrate, a second organic polymer film superposed on the first organic polymer film, and an optical reflecting film provided on a patterned end face of the first organic polymer film. The first organic polymer film portion within the pattern has a refractive index different from that of the substrate. The first organic polymer film portion outside the pattern has substantially the same refractive index as the substrate. The refractive index of the second organic polymer film is substantially the same as that of the first organic polymer film portion outside the pattern. At least either one of the refractive indexes of the first and second organic polymer films changes with pressure fluctuation.