Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ELECTRONIC FLASH DEVICE
Document Type and Number:
Japanese Patent JP2002250961
Kind Code:
A
Abstract:

To prevent destruction of a switching element due to high currents and to realize flat emission by controlling the quantity of electronic flash light.

In this electronic flash device, a CPU 1 determines the quantity of light emitted by the xenon tube of an electronic flash emission circuit 7 on the basis of the output result of an AE circuit 3 and an AF circuit 2. On the basis of this emitted light quantity, the number of times of the emission by the xenon tube of the electronic flash light emitting part 7 is determined to obtain flat emission. This number of times of the emission is changed by the CPU 1 according to the output of a charging circuit 8.


Inventors:
TSUCHIDA KEIICHI
DOI TAKAHIRO
Application Number:
JP2001050621A
Publication Date:
September 06, 2002
Filing Date:
February 26, 2001
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
OLYMPUS OPTICAL CO
International Classes:
G03B7/16; G03B15/03; G03B15/05; H05B41/32; H05B41/34; (IPC1-7): G03B15/05; G03B7/16; G03B15/03; H05B41/32; H05B41/34
Attorney, Agent or Firm:
Takehiko Suzue (4 outside)