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:
Sep. 15, 1992
Filed:
Mar. 21, 1991
Masanobu Shigeta, Yokosuka, JP;
Shigeo Shimizu, Yokohama, JP;
Nozomu Ohkouchi, Yokosuka, JP;
Hiromitsu Takenaka, Yokosuka, JP;
Toshio Konno, Hoya, JP;
Victor Company of Japan, Yokohama, JP;
Abstract
A spatial light modulator providing an improved contrast, has a laminated structure of multiple layers including typically a photoconductive layer, an optical modulation layer, and a pair of electrode layers interposing the photoconductive and optical modulation layers. The thickness of at least one of the electrode layers having a predetermined relationship with a wavelength of light incident to the one of the electrode layers for writing or reading-out information into or from the spatial light modulator. The electrode layer may further comprise an electrode member and an intermediate layer disposed between the electrode member and an adjacent layer laminated adjacent to the one of the electrode layers, the electrode member having a first refractive index, the adjacent layer having a second refractive index, and the intermediate layer having a third refractive index determined to be in between the first and second indices, the thickness of the intermediate layer having an another predetermined relationship with the wavelength of the light incident to the one of the electrode layers for writing or reading-out information into or from the spatial light modulator. The intermediate layer may be a single layer-member or multiple layer-members having different refractive indices each other.