Title:
The digital camera provided with a photography auxiliary light device and this
Document Type and Number:
Japanese Patent JP5948050
Kind Code:
B2
Abstract:
An illumination device has LEDs, EDLCs for LED use, and a non-volatile memory for recording the difference between the color temperature and/or the illumination spectrum of LEDs and Xe gas. The unused charge in an EDLC is recovered by a power cell. Illumination strength is changed in accordance with the image pickup distance of a DSC. Illumination strength is changed in accordance with exposure time so that a fill-in ratio is maintained. The illumination strength of LEDs is gradually increased and then at the peak strength is suddenly reduced. The mixture ratio of light from LEDs having different light distributions is changed due to focal distance, and then an incidence angle is changed. A group of LEDs is disposed in a ring shape on the front of a lens. During continuous capture, LEDs are caused to illuminate continuously or synchronously.
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Inventors:
Tadayoshi Sato
Masahide Tanaka
Masahide Tanaka
Application Number:
JP2011278423A
Publication Date:
July 06, 2016
Filing Date:
December 20, 2011
Export Citation:
Assignee:
ROHM Co., Ltd.
International Classes:
G03B15/05; H05B44/00; G03B7/08; G03B15/03; G03B17/18; H04N5/225; H04N5/238
Domestic Patent References:
| JP2004045863A | ||||
| JP2011158696A | ||||
| JP2003280071A |
Attorney, Agent or Firm:
Sano patent office
Shizuo Sano
Hideki Hayashida
Shizuo Sano
Hideki Hayashida