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:
May. 31, 1994
Filed:
Nov. 20, 1992
Yukihiro Yoshida, Kawasaki, JP;
Satoshi Ueda, Kawasaki, JP;
Makoto Itoh, Kawasaki, JP;
Mitsuo Yoshikawa, Kawasaki, JP;
Shigeki Hamashima, Kawasaki, JP;
Hiroyuki Tsuchida, Kawasaki, JP;
Koji Hirota, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An infrared ray detecting sensor having an infrared ray detecting element located in the cool chamber of a Dewar structure comprising inner and outer cylindrical members. The chamber is evacuated to vacuum level and a getter is arranged in the chamber for ensuring the vacuum level in the chamber. A partition is arranged in the chamber between the inner end of the inner cylindrical member and the getter for forming a restricted passage and allowing communication of a gas between the getter and the infrared ray detecting element and obstructing a stray ray generated upon a radiation of the getter toward the infrared ray detecting element. The restricted passage is formed such that a ray generated upon radiation of the getter is reflected many times at the restricted passage and is dampened. The partition is roughened and colored in black.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile