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:
Jul. 10, 1990
Filed:
Mar. 30, 1989
Applicant:
Inventors:
Yukio Ogawa, Kanagawa, JP;
Kazuo Ikawa, Kanagawa, JP;
Toru Shoji, Tokyo, JP;
Hideo Tamamura, Kanagawa, JP;
Hiroki Nakayama, Kanagawa, JP;
Takashi Matsushita, Kanagawa, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; F21V / ;
U.S. Cl.
CPC ...
362-3 ; 362263 ; 362309 ; 362339 ; 3541491 ; 313594 ; 313610 ;
Abstract
A flash device for a camera of the kind using a miniature lamp type flash tube solves all the problems resulting from the use of the straight tube type flash tube. The disclosed arrangement of the flash device not only ensures an adequate light distributing characteristic in all the vertical and lateral directions but also permits reduction in size of an electronic flash unit.