Optical image detector and method for controlling...

Details Optical image detector and method for controlling... Optical image detector and method for controlling...

2006-06-20

2006-06-20

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

C250S208100, C250S2140RC, C348S296000

Reexamination Certificate

active

07064311

ABSTRACT:
Disclosed is an optical image detector and method for controlling illumination of the same. The optical image detector comprises a light source for controlling the illumination in response to an illumination control signal and irradiating light having the controlled illumination onto a subject, an image sensor for detecting a quantity of light reflected from the subject and generating and outputting image signals corresponding to the detected quantity of light, and an image processor for calculating a shutter-on time using the image signals, comparing the calculated shutter-on time with at least one of maximum and minimum shutter-on times, and generating and outputting the illumination control signal corresponding to values of the compared results. Thereby, the optical image detector solves a noise and an after-image of the optical image generated owing to lack of the quantity of light of the light source, so that it is possible to accurately obtain an image of the subject and to provide a power saving effect.

REFERENCES:
patent: 5514864 (1996-05-01), Mu-Tung et al.
patent: 6081612 (2000-06-01), Gutkowicz-Krusin et al.
patent: 6455840 (2002-09-01), Oliver et al.
patent: 6674475 (2004-01-01), Anderson
patent: 6870566 (2005-03-01), Koide et al.

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