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:
Apr. 30, 1987
Kazuhiko Matsuoka, Yokohama, JP;
Kazuo Minoura, Yokohama, JP;
Masayuki Usui, Yokohama, JP;
Yukuo Nishimura, Sagamihara, JP;
Takeshi Baba, Yokohama, JP;
Atsushi Someya, Machida, JP;
Yuko Suga, Yokohama, JP;
Kazuyo Matsumoto, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A functional optical element comprises a first optical member, a second optical member provided in contact with said first optical member, the interface between said first optical member and said second optical member being non-flat planar, a means for changing the refractive index of said second optical member, said means for changing refractive index being capable of creating selectively a first state in which said first optical member and said second optical member have an equal refractive index and a second state in which said first optical member and said second optical member have different refractive indices by changing the refractive index of said second optical member.