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. 17, 1990
Filed:
Mar. 15, 1989
Applicant:
Inventor:
Shigeru Sasada, Kyoto, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ; G02B / ;
U.S. Cl.
CPC ...
350 9610 ; 350433 ; 350452 ;
Abstract
A linear light diffusing apparatus is formed of a transparent cylindrical rod. A white layer is formed on the outer periphery of the cylindrical rod along the longitudinal direction thereof. A plurality of elongated saw tooth shaped grooves are formed on the opposite side of the outer periphery. Light entering from one end of the transparent cylindrical rod is irregularly reflected by the white layer. The irregularly reflected light is refracted by the saw tooth shaped grooves to be linearly condensed at a prescribed position.