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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 9239463 B1

PDFFull Text
Date of Patent:
Jan. 19, 2016

Filed:

Mar. 20, 2012

Illumination device and display unit for suppressing luminance unevenness and interference pattern

Applicant:

Toshifumi Yasui, Kanagawa, JP;

Inventor:

Toshifumi Yasui, Kanagawa, JP;

Assignee:

Sony Corporation, Tokyo, JP;

Attorney:

Sony Corporation

Primary Examiner:

Sultan Chowdhury

Assistant Examiner:

Danell L Owens

Int. Cl.
CPC ...
G03B 21/20 (2006.01); G02B 27/14 (2006.01); G02B 27/48 (2006.01); H04N 9/31 (2006.01); G02B 27/09 (2006.01); G02B 27/10 (2006.01); G02B 27/42 (2006.01); G02B 5/04 (2006.01);
U.S. Cl.
CPC ...
G02B 27/141 (2013.01); G02B 27/0927 (2013.01); G02B 27/1033 (2013.01); G02B 27/425 (2013.01); G02B 27/48 (2013.01); G03B 21/2033 (2013.01); H04N 9/3111 (2013.01); H04N 9/3161 (2013.01); G02B 5/045 (2013.01);
Abstract

An illumination device includes a light source section including a laser light source, and intermittently emitting, at a predetermined frequency, laser light emitted from the laser light source, an optical element passing the laser light emitted intermittently from the light source section, and a drive section vibrating the optical element at a predetermined vibration frequency. An expression 1 or 2 below is satisfied, where f[Hz] denotes the frequency, f[Hz] denotes a variable frequency of luminance in illumination light emitted from the optical element as a result of vibration of the optical element, ndenotes an arbitrary integer of 0 or larger and 10 or smaller, and ndenotes a predetermined integer of 1 or larger.|1×1−2|≧20  1|2×1−2|≦3  2

Find Patent Forward Citations

Yasui, Toshifumi. (2016). Illumination device and display unit for suppressing luminance unevenness and interference pattern (U.S. Patent No. 9239463). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9239463

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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