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Image observing apparatus and imaging apparatus utilizing the image observing apparatus

  • US 5,815,741 A
  • Filed: 05/15/1997
  • Issued: 09/29/1998
  • Est. Priority Date: 12/21/1994
  • Status: Expired due to Term
First Claim
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1. An image observing apparatus comprising:

  • an optical element including a first face inclined relative to an observer, a second face comprised of a reflective concave side, and a third face which light from an image enters so as to have overall a positive refractive power;

    line-of-sight detecting means for detecting a line of sight of the observer including a light source provided on an observing side of said optical element to illuminate a fore eye portion of the observer and a light receiving means for receiving an image of the fore eye portion; and

    light reflecting means, provided in an observing side of the first face, between the first face and the light source, for reflecting the light emanating from the light source,wherein the light from the image entering the third face is reflected by the first face, is convergently-reflected to a first face side by the second face, and emerges from the first face, andwherein the light, from the light source, reflected at the fore eye portion of the observer is reflected by said light reflecting means and enters said light receiving means.

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