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:
Jun. 09, 2015
Filed:
Feb. 28, 2012
Koji Miyasaka, Tokyo, JP;
Koji Miyasaka, Tokyo, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
A diffractive optical element includes first and second diffractive optical parts to generate diffracted lights two-dimensionally with respect to incident light. The diffracted lights generated by inputting the incident light to the first diffractive optical part are input to the second diffractive optical part in order to generate the diffracted lights from the second diffractive optical part, wherein θ≧θand k≧kstand or, θ≦θand k≦kstand among θand θdenote diffraction angles of the first and second diffractive optical parts, and kand kdenote numbers of light spots of the diffracted lights generated by the first and second diffractive optical parts.