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:
Apr. 24, 1990
Filed:
Nov. 18, 1988
Takao Okada, Hachioji, JP;
Takeaki Nakamura, Hino, JP;
Kazuo Nakamura, Hachioji, JP;
Kimihiko Nishioka, Hachioji, JP;
Toshihito Kouchi, Tama, JP;
Hiroyuki Yamamoto, Hachioji, JP;
Hideo Tomabechi, Higashiyamato, JP;
Olympus Optical Company, , JP;
Abstract
Liquid crystal eyeglasses include a detector for detecting a physical quantity which varies with the temperature of the liquid crystal, the orientation of molecules of the liquid crystal or a change in the refractive index of the liquid crystal. The voltage applied to the liquid crystal is controlled in accordance with an output signal from the detector, thus compensating for a change in the refractive index of the liquid crystal which is attributable to a temperature change and maintaining the refractive index constant.