Patent Document ID: 20040263613
Application ID: 10820105
Patent Status: 0

Claim One:
1. A stereo-observation system comprising: a stereo imaging unit having at least two entrance pupils and imaging means forming a first image for the left eye and a second image for the right eye which have parallax; and a stereo display unit having two image display means displaying two images formed by the stereo imaging unit, wherein the stereo display unit is constructed so that an angle of vergence &agr; 2 is made by a line of sight of a left eye of an observer viewing a center of the first image displayed by the image display means with a line of sight of a right eye of the observer viewing a center of the second image displayed by the image display means, and the angle of vergence &agr; 2 satisfies the following condition: &agr; 1 −2 tan −1 ( d/ 2 L ) )×( w 2 /w 1 )×0.83&lE;&agr; 2 &lE;&lcub;2 sin −1 ( G /2 D −(2 tan −1 ( d/ 2 S )−&agr; 1 )×( w 2 / w 1 )&rcub;×1.2 where &agr; 1 is an angle of vergence (an inward angle) of the stereo imaging unit, d is a distance between centers of the two entrance pupils of the stereo imaging unit, L is a distance from a far point of a depth of field of the stereo imaging unit to the entrance pupils of the stereo imaging unit, S is a distance from a near point of the depth of field of the stereo imaging unit to the entrance pupils of the stereo imaging unit, w 1 is a field angle of the stereo imaging unit, w 2 is a field angle of the stereo display unit, G is an interpupillary distance of the observer, and D is a distance from a pupil position of the observer to an observation image.