1993 年 56 巻 5 号 p. 369-371
An eye controlled auto focus system was developed for SLR cameras, It detects where the photographer sees in the view-finder, then determines among 5 focus points provided in the view field, the nearest one to where he sees. The camera focuses the objective lens, using the focusing information obtained from the above determined focus point. The eye detection is achieved by an opto-electronical system, consisting of 2 IREDs, a small size area CCD image sensor, and a micro-computer. The capability and precision of the sight-line detection is enough to choose one of the arrayed focus points by the photographer's eye movement. It operates within a blink period, and even for those people with glasses. This paper discusses the concept and the structure of the eye controlled auto focus system built in our new SLR camera products.