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:
Oct. 23, 2001
Filed:
Mar. 15, 2000
Toshiaki Noguchi, Shirakawa, JP;
Isamu Karasawa, Hachioji, JP;
Nobuo Moriya, Shirakawa, JP;
Terutoshi Shigemoto, Shirakawa, JP;
Koji Saito, Nishigo-mura, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A light source having a lamp for generating light generates a lamp on signal at an output terminal thereof when the lamp is lit. A lamp life meter is connected to the light source for detecting the time that the lamp has been lit. The lamp life meter includes a housing having at least one contact terminal adapted to be coupled to the output terminal of the light source, a clock generator located in the housing and generating clock signals, a counter located in the housing and counting the clock signals whenever the clock on signal indicates that the lamp is on and a display mounted in the housing for displaying an indication of the time the lamp has been turned on.