Title:
IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/032541
Kind Code:
A1
Abstract:
An imaging device is provided with: an optical lens (4); a CMOS image sensor (6) which converts a subject image formed by means of the optical lens (4) into imaging signals; a signal processing circuit (26) which performs prescribed processing to the imaging signal transmitted from the CMOS image sensor (6); a signal amplifying circuit (28) for amplifying an output signal outputted from the signal processing circuit (26); a diaphragm means (8) for adjusting a quantity of light that enters a light receiving surface (16) of the CMOS image sensor (6) through the optical lens (4); a driving means (10) for driving the diaphragm means (8); and a drive control circuit (30) for drive-controlling the driving means (10). When the output signal outputted from the signal processing circuit (26) exceeds a first prescribed value, the drive control circuit (30) drive-controls the driving means (10) so that a plurality of diaphragm blades (20) are shifted in the stop-down direction. When the output signal outputted from the signal processing circuit (26) is lower than the first prescribed value, the drive control circuit (30) drive-controls the driving means (10) so that the diaphragm blades (20) are shifted in the opening direction.
Inventors:
HASHIMOTO SUSUMU (JP)
Application Number:
PCT/JP2009/062721
Publication Date:
March 25, 2010
Filing Date:
July 14, 2009
Export Citation:
Assignee:
NIHON LOGICS CO LTD (JP)
HASHIMOTO SUSUMU (JP)
HASHIMOTO SUSUMU (JP)
International Classes:
H04N5/238; G03B9/02; G03B9/07; H04N5/225
Domestic Patent References:
| WO2005027510A1 | 2005-03-24 |
Foreign References:
| JP2007194988A | 2007-08-02 | |||
| JPH06197269A | 1994-07-15 | |||
| JP2007104510A | 2007-04-19 | |||
| JP2004208206A | 2004-07-22 | |||
| JPH05252435A | 1993-09-28 |
Attorney, Agent or Firm:
KISHIMOTO Tadaaki et al. (JP)
Tadaaki Kishimoto (JP)
Tadaaki Kishimoto (JP)
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