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.

Date of Patent:
Mar. 22, 2016

Filed:

Dec. 16, 2011
Applicants:

Miwa Kamii, Osaka, JP;

Youko Inoue, Nara, JP;

Inventors:

Miwa Kamii, Osaka, JP;

Youko Inoue, Nara, JP;

Assignees:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 1/00 (2006.01); H05B 37/02 (2006.01); H05B 33/08 (2006.01);
U.S. Cl.
CPC ...
H05B 37/02 (2013.01); H05B 33/086 (2013.01); H05B 37/0272 (2013.01); Y02B 20/40 (2013.01);
Abstract

In a memory of a lighting device, correspondence relations among an initial output, a target output and time required for reducing brightness from the initial output to the target output are stored in advance. When the initial output and the target output are designated (YES at S), the time necessary for brightness reduction is specified from the correspondence relation (S), and the light emission output is reduced at such a change rate that the light emission output has a linear relation with respect to elapsed time from the initial output to the target output in a specified time, on a semi logarithmic graph in which the ordinate is a logarithmic axis representing light emission output and the abscissa is a linear axis representing time (S).


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