Image observing apparatus and imaging apparatus utilizing the im

Details Image observing apparatus and imaging apparatus utilizing the im Image observing apparatus and imaging apparatus utilizing the im

1997-05-15

1998-09-29

Gray, David M.

Photography

Eye tracking

351210, 250221, G03L 708, A61B 3114, G03B 1302

Patent

active

058157417

ABSTRACT:
An image observing apparatus according to the present invention includes: an optical element including a first face inclined relative to an observer, a second face composed of a reflective concave side, and a third face which the light from the image enters so as to have overall a positive refractive power; a line-of-sight detecting device for detecting a line of sight of the observer including a light source to illuminate a fore eye portion of the observer and a light receiving device for receiving an image of the fore eye portion; and a light reflecting device, provided in an observing side of the first face, for reflecting the light emanating from the light source. In this image observing apparatus, the light from the image entering the third face is reflected by the first face, is condenser-reflected at a first face side by the second face, and is irradiated from the first face. Moreover, the light, from the light source, reflected at the fore eye portion of the observer is reflected by the light reflecting device and enters the light receiving device.

REFERENCES:
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patent: 5093567 (1992-03-01), Staveley
patent: 5155516 (1992-10-01), Shindo
patent: 5321446 (1994-06-01), Massig et al.
patent: 5486892 (1996-01-01), Suzuki et al.
patent: 5526082 (1996-06-01), Hirano
patent: 5689736 (1997-11-01), Okuyama et al.

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