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. 26, 2013
Filed:
Feb. 07, 2012
Shuya Ogi, Minato-ku, JP;
Shuya Ogi, Minato-ku, JP;
Nippon Sheet Glass Company, Limited, Tokyo, JP;
Abstract
An erecting equal-magnification lens array plate comprises first and second lens array plates stacked on one another, a fourth surface light-shielding wall, and an intermediate light-shielding wall. An intermediate through hole formed in the intermediate light-shielding wall is formed such that the hole diameter is progressively smaller in a tapered fashion away from the first lens array plate toward the second lens array plate. An angle of inclination θ of an interior wall surface of the intermediate through hole with respect to a optical axis is given byθ≧tan(4/(Gap+24))/2where Gap denotes a gap between the lens array plates, Ldenotes a thickness of the second lens array plate, Hdenotes a height of the fourth surface light-shielding wall, and Ddenotes a diameter of the opening of the fourth surface through hole formed in the fourth surface light-shielding wall facing the image plane.