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:
Jan. 04, 2005
Filed:
Jan. 15, 2003
Takafumi Noguchi, Kanagawa, JP;
Takafumi Noguchi, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
The light emitting device includes a light emitting portion having a larger refraction index than air, and a medium which is provided on a light extraction surface extracting light from the light emitting portion and which has different haze ratios depending on a light incident angle, wherein a haze ratio is defined as follows:the haze ratio=(scattered light transmission factor/total light transmission factor)×100 (%), or =(scattered light transmission factor/(scattered light transmission factor+parallel light transmission factor))×100 (%). The light emitting device improves the light extraction efficiency from the light emitting device.