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Stereo-observation system

  • US 20040263613A1
  • Filed: 04/08/2004
  • Published: 12/30/2004
  • Est. Priority Date: 04/09/2003
  • Status: Active Grant
First Claim
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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 α

    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 α

    2 satisfies the following condition;

    α

    1

    2 tan

    1
    (d/2L) )×

    (w2/w1

    0.83≦

    α

    2

    {2 sin

    1
    (G/2D

    (2 tan

    1
    (d/2S)−

    α

    1

    (w2/w1)}×

    1.2 where α

    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, w1 is a field angle of the stereo imaging unit, w2 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.

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