Binocular optical image-pickup equipment and binocular image-pic

Details Binocular optical image-pickup equipment and binocular image-pic Binocular optical image-pickup equipment and binocular image-pic

1996-05-15

1997-06-17

Dang, Hung X.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351200, 351205, A61B 310, A61B 300

Patent

active

056402210

ABSTRACT:
A housing has a hollow section, and openings are formed at both ends of the hollow section so as to communicate with the outside. An aperture is formed in the internal wall of the housing so as to oppose the opening, and a video camera is fitted into the opening. A half mirror, a mirror, an optical lens, and light sources are disposed within the hollow section. The light sources are alternately illuminated while a patient wears equipment having such a construction. Light reflected from one eye passes through the half mirror and enters a light receiving surface of the video camera. On the other hand, light reflected from the other eye is reflected from the mirror and a half mirror and, then, enters the light receiving surface of the video camera. The optical lens corrects an error arising from a difference in length between two optical paths.

REFERENCES:
patent: 3535026 (1970-10-01), Coss
patent: 4568153 (1986-02-01), Baluteau
patent: 4702575 (1987-10-01), Breglia
patent: 4712895 (1987-12-01), Kamiyama et al.
Scinto et al, A Potential Noninvasive Neurobiological Test for Alzheimer's Disease, Nov. 11, 1994, vol. 266 pp. 1051-1054.
Patent Abstracts of Japan, vol. 95, No. 004 & JP-A-07 100146 (Kazumi Makishima; Others: 01) Apr. 18. 18, 1995, * abstract.

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