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. 09, 1991
Filed:
Aug. 25, 1987
Brian D Powell, Maidenhead, GB;
Kidde-Graviner Limited, Derby, GB;
Abstract
A radiation detection arrangement is described using a layer of pyroelectric material such as polyvinylidene fluoride positioned between two electrodes. One electrode has a radiation-reflecting front surface and is coated with material having selected radiation absorbing characteristics. This material absorbs radiation lying within a predetermined wavelength band and this therefore heats the material and produces an electrical output. Radiation lying outside the absorption band of material is unabsorbed and is reflected by the reflecting surface. No heating takes place and no corresponding electrical output is produced. A radiation-selective detector is therefore produced without the need for optical filters.