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. 18, 1989
Filed:
Dec. 13, 1988
Tadashi Sugimoto, Ibaraki, JP;
Optex Co., Ltd., Otsu, JP;
Abstract
An apparatus for perceiving an intruder by means of detecting infrared rays radiated from the intruder through a plurality of detectable infrared flux enveloping spaces spanned supposedly between the infrared receiving portion of the apparatus and a plurality of sub-domains supposed on the ground, the detectable infrared flux enveloping spaces being arranged densely so that at least two of them may always be crossed by an intruder, and such a dense arrangement of the detectable infrared flux enveloping spaces being effected with a multi-lens system molded in one body so as to have on its surface a plurality of infrared converging lenses having their respective principal axes differently directed providing the detectable infrared flux enveloping spaces.