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:
Dec. 02, 2003
Filed:
Oct. 31, 2001
Applicant:
Inventors:
Myung-ryul Jung, Suwon, KR;
Chi-wang Son, Suwon, KR;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V 9/12 ;
U.S. Cl.
CPC ...
F21V 9/12 ;
Abstract
An illumination system for a display apparatus is capable of reducing electric power consumption and lengthening a life span by minimizing a loss of marginal rays that are spaced away from a main optical axis. The minimum loss of the marginal rays is obtained by a light reflective surface of a predetermined degree of curvature formed on an optical device for diffuse-reflecting and altering an optical path of a light from a light source.
Jung, Myung-ryul. (2003). Illumination system for a display apparatus (U.S. Patent No. 6655820). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6655820
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