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:
Feb. 28, 2012
Filed:
Jul. 05, 2007
Manami Kuiseko, Kyoto, JP;
Akira Sato, Ritto, JP;
Manami Kuiseko, Kyoto, JP;
Akira Sato, Ritto, JP;
Konica Minolta Holdings, Inc., Tokyo, JP;
Abstract
A surface light emitter comprising a surface-emitting device is notably increased in the front brightness of light outputted from the surface-emitting device. In the surface light emitter comprising the surface-emitting deviceand a light control sheet, a repetitive concavo-convex pattern of trapezoidal from in section is formed at least on one side of the light control sheet and has planar portionsat distal ends of projections of the concavo-convex pattern tightly bonded to an output surfaceof the surface-emitting device. The light control sheet satisfies a condition 0.75>D>4[(sin θ−1/n)+0.034] where θ represents the apex angle formed by opposite slant sides of the trapezoidal projection of the light control sheet, n represents the refractive index of the light control sheet, and D represents the ratio of a length of a zone to a one-cycle length of the repetitive concavo-convex pattern of the light control sheet as determined in one of the pattern arrangement directions, the zone tightly bonded to the output surface of the surface-emitting device.