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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.:

US 11953857 B1

PDFFull Text
Date of Patent:
Apr. 09, 2024

Filed:

Sep. 15, 2020

Illumination apparatus using a coherent light source

Applicant:

Dai Nippon Printing Co., Ltd., Tokyo, JP;

Inventor:

Makio Kurashige, Tokyo, JP;

Assignee:

DAI NIPPON PRINTING CO., LTD., Tokyo, JP;

Attorney:

Ladas & Parry LLP

Primary Examiner:

Derek S Chapel

Int. Cl.
CPC ...
G03H 1/32 (2006.01); F21V 5/00 (2018.01); F21V 14/00 (2018.01); F21V 14/04 (2006.01); G02B 3/00 (2006.01); G02B 3/08 (2006.01); G02B 5/02 (2006.01); G02B 5/32 (2006.01); G02B 27/48 (2006.01); G03B 21/20 (2006.01); G03B 33/06 (2006.01); G03H 1/00 (2006.01); G03H 1/02 (2006.01); G03H 1/04 (2006.01); G03H 1/22 (2006.01); G03H 1/26 (2006.01); H04N 9/31 (2006.01); F21Y 115/10 (2016.01); F21Y 115/30 (2016.01);
U.S. Cl.
CPC ...
G03H 1/32 (2013.01); F21V 5/004 (2013.01); F21V 14/00 (2013.01); F21V 14/04 (2013.01); G02B 3/0006 (2013.01); G02B 3/08 (2013.01); G02B 5/0252 (2013.01); G02B 5/32 (2013.01); G02B 27/48 (2013.01); G03B 21/2033 (2013.01); G03B 21/208 (2013.01); G03B 33/06 (2013.01); G03H 1/0005 (2013.01); G03H 1/02 (2013.01); G03H 1/0402 (2013.01); G03H 1/22 (2013.01); G03H 1/2286 (2013.01); H04N 9/3129 (2013.01); F21Y 2115/10 (2016.08); F21Y 2115/30 (2016.08); G03H 2001/0204 (2013.01); G03H 2001/0212 (2013.01); G03H 2001/0216 (2013.01); G03H 1/0244 (2013.01); G03H 1/0248 (2013.01); G03H 2001/0413 (2013.01); G03H 2001/0415 (2013.01); G03H 2001/0428 (2013.01); G03H 2001/0439 (2013.01); G03H 2001/045 (2013.01); G03H 2001/2292 (2013.01); G03H 2001/262 (2013.01); G03H 2222/36 (2013.01);
Abstract

An illumination apparatus using a coherent light source, comprising: a coherent light source that generates a coherent light beam, a microlens array including a collection of a large number of independent lenses; and a light beam scanning device that irradiates the light beam onto the microlens array and carries out scanning so that an irradiation position and an irradiation direction of the light beam on the microlens array changes with time. Each of the independent lenses included in the microlens array has a function of refracting light irradiated from the light beam scanning device and forming an irradiation region on a light receiving surface. The light receiving surface is not a refractive element, and is configured so that irradiation regions formed by the independent lenses become substantially a same common region on the light receiving surface. The irradiation regions being irradiated by light which is refracted by the independent lenses.

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