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:
Sep. 19, 2000
Filed:
Sep. 15, 1998
Applicant:
Inventors:
Hajime Fukamura, Nagano, JP;
Akio Izumi, Nagano, JP;
Assignee:
Fuji Electric Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257680 ; 257687 ; 257729 ; 257791 ;
Abstract
A semiconductor optical sensing device includes an insulating casing containing a semiconductor optical sensor chip fixed in the bottom thereof. Transparent silicone gel fills the interior of the casing and covers the sensor chip. A transparent plate covers both the sensor chip and the silicone gel. Holes in the casing allow expansion and contraction of the silicone gel without disturbing the optical properties of the sensor chip, and without permitting the formation of bubbles in the silicone gel.