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. 16, 2026
Filed:
Dec. 17, 2020
Applicant:
Scivax Corporation, Kawasaki, JP;
Inventors:
Assignee:
SCIVAX CORPORATION, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 3/00 (2006.01); G02B 3/04 (2006.01); G02B 5/02 (2006.01); G02B 5/08 (2006.01); G02B 5/28 (2006.01); H01S 5/183 (2006.01);
U.S. Cl.
CPC ...
G02B 3/0056 (2013.01); G02B 3/0037 (2013.01); G02B 3/04 (2013.01); G02B 5/0294 (2013.01); G02B 5/0808 (2013.01); G02B 5/28 (2013.01); H01S 5/183 (2013.01);
Abstract
An optical device is provided which does not need a collimate lens, and which has a high available efficiency of light. The optical device includes a light source unitemitting light with a wavelength λ, and an optical elementwith a concavo-convex structure including periodical lenses. When n is a natural number equal to or greater than 1, and the size of a k-th (where k is a natural number equal to or greater than 1) pitch from the smallest one among the pitches of the concavo-convex structure is P, a distance Lbetween the light source unit and the optical element satisfies the following formula 1 for equal to or greater than any one pitch P.