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:
Jun. 20, 2000
Filed:
Sep. 22, 1997
Shinji Uchida, Osaka, JP;
Tsuguhiro Korenaga, Osaka, JP;
Hiroyasu Tsuji, Osaka, JP;
Shougo Nasu, Hyogo, JP;
Norimoto Nouchi, Osaka, JP;
Toshio Fukazawa, Kyoto, JP;
Toshihiro Kuriyama, Shiga, JP;
Yuji Matsuda, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
This invention provides a light absorber which can be used for optical equipment like optical-disk equipment and a liquid crystal display. The light absorber has a layered structure including a light absorbing layer and a transparent layer. The light absorbing layer absorbs a reflected light from the inside of the absorber as well as incident light into the absorber while the transparent layer helps attenuate the reflected light by interference of light. One of the light absorbing layers which is thicker than others may work as a shading layer for the incident light.