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:
Aug. 15, 2000
Filed:
Mar. 31, 1997
Kayoko Masaki, Kawaguchi, JP;
Kazumasa Ohsumi, Kawaguchi, JP;
Enplas Corporation, Kawaguchi, JP;
Other;
Abstract
A light regulator and a surface light source device employing the light regulator. For liquid-crystal display applications, the surface light source device can effectively prevent degradation in the quality of the emitted light and can reliably provide the required directivity correction. The light regulator is formed by laminatedly arranging a light scattering surface between first and second sheet-like members. The two sheet-like members mutually differ in shape, material and refractive index. Scattering means arranged between the first and second sheet-like members prevents Newton's rings due to spaces between the two sheet-like members from occurring. A light diffusion sheet may be disposed between the first and second sheet-like members.