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:
Sep. 04, 2018
Filed:
Apr. 18, 2013
Applicant:
Hamamatsu Photonics K.k., Hamamatsu-shi, Shizuoka, JP;
Inventors:
Assignee:
HAMAMATSU PHOTONICS K.K., Hamamatsu-shi, Shizuoka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/29 (2006.01); G02B 26/06 (2006.01); G02B 27/09 (2006.01); G02B 26/08 (2006.01); G02B 21/16 (2006.01); G02B 27/56 (2006.01);
U.S. Cl.
CPC ...
G02F 1/29 (2013.01); G02B 26/06 (2013.01); G02B 26/0825 (2013.01); G02B 26/0875 (2013.01); G02B 27/0927 (2013.01); G02B 27/0938 (2013.01); G02B 21/16 (2013.01); G02B 27/56 (2013.01); G02F 2001/294 (2013.01);
Abstract
A beam expander includes a first lens unit including one of an SLM or a VFL, a second lens unit being optically coupled to the first lens unit and including one of an SLM or a VFL, and a control unit controlling focal lengths of the first and second lens units. A distance between the first and second lens units is invariable. The control unit controls the focal lengths of the first and second lens units such that a light diameter Dof light input to the first lens unit and a light diameter Dof light output from the second lens unit are different from each other.