Automatic focussing adjusting device

Details Automatic focussing adjusting device Automatic focussing adjusting device

1988-09-19

1990-03-27

Perkey, W. B.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

2502014, 358227, G03B 300, G01J 120, A04N 5232

Patent

active

049124960

ABSTRACT:
An automatic focussing adjusting device which controls properly an integration time necessary to integrate the amount of light received by a CCD line sensor for measuring the light of an object to detect a focal position. In the automatic focussing adjusting device, when the average value of the output data of the CCD line sensor is a value existing out of the stable operation region of the CCD line sensor, the integration in time for the amount of the light received from the object by the CCD line sensor is controlled so that the average value of the next output data of the CCD line sensor converges rapidly to the reference value of the output data to be selected in the CCD line sensor stable operation region. For the average value existing in the stable operation region, the integration time is controlled so that the average value of the next output data converges slowly to the reference value. Therefore, stable output data of the CCD line sensor can be obtained and can follow accurately the variations of the brightness of the object.

REFERENCES:
patent: 4584656 (1986-04-01), Sakai et al.
patent: 4701626 (1987-10-01), Ishizaki et al.

Affiliated with

Also associated with

Rating

Automatic focussing adjusting device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic focussing adjusting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic focussing adjusting device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1654369