Automatic focusing method and apparatus

Details Automatic focusing method and apparatus Automatic focusing method and apparatus

1997-12-02

1999-04-06

Epps, Georgia

Optical: systems and elements

Single channel simultaneously to or from plural channels

369 54, G02B 2710, G11B 4390

Patent

active

058926224

ABSTRACT:
An automatic focussing method and an automatic focussing device capable of performing correct focussing. The relative position between an object 4 and an objective lens 2 is measured for focussing. The laser light illuminated on the object is transmitted through a cylindrical lens 7 so as to be condensed only as to one direction. The laser light condensed as to the one direction is illuminated via the objective lens 2 on the object 4 in a linear form. The illuminated laser light reflected by the object 4 is integrated and detected by a detection unit. The relative position between the object and the objective lens is measured from the spot of the detected reflected laser light in order to perform focussing.

REFERENCES:
patent: 5195081 (1993-03-01), Usui
patent: 5225886 (1993-07-01), Koizumi et al.
patent: 5721605 (1998-02-01), Mizutani
patent: 5726757 (1998-03-01), Kato et al.

Affiliated with

Also associated with

Rating

Automatic focusing method and apparatus 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 focusing method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic focusing method and apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1376329