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:
Nov. 29, 2005
Filed:
Jun. 03, 2002
Kazuyoshi Ebina, Kita-katsushika-gun, JP;
Takashi Abe, Minami-saitama-gun, JP;
Masaru Miyashita, Kashiwa, JP;
Susumu Takahashi, Tokyo, JP;
Kazuyoshi Ebina, Kita-katsushika-gun, JP;
Takashi Abe, Minami-saitama-gun, JP;
Masaru Miyashita, Kashiwa, JP;
Susumu Takahashi, Tokyo, JP;
Toppan Printing Co., Ltd., Tokyo, JP;
Abstract
In order to provide a micro-lens sheet in which unit lenses are disposed in highly accurate pitch so as to control the light diffusing characteristics of the light emission direction not only in a horizontal direction but also over 360 degrees by using the lens function of one piece of lens sheet, a micro-lens sheet has a micro-lens array section in which unit lenses are disposed in approximate matrix in a second dimensional manner on at least one surface of a base board, and the micro-lens array section is formed on only one surface of the base board, the micro-lens array section includes the unit lens having an aspherical shape, and disposition pitch of neighboring unit lenses is 200 μm or shorter.