Camera with device for detecting line of sight
AssigneeNikon Corporation
InventorsFumio Suzuki, Shigemasa Sato
Life of this patent
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Abstract
A camera with a device for detecting the line of sight is provided with a first light source for detecting the corneal reflected image of the eye and a second light source for detecting the boundary between the pupil and the iris or between the iris and the white of the eye, thereby effecting illuminations for these purposes with optimum illumination intensities. Thus the position of the Purkinje's first image and the central position of the pupil can be detected efficiently, and the direction of the line of sight can be accurately calculated.
Claims24
A camera with a sight line detecting device provided with illumination means for illuminating an eye of a photographer, and a photoelectric conversion device which photoelectrically converts the light reflected from said eye illuminated by said illumination means, the sight line detecting device detecting a sight line of the photographer based on output from said photoelectric conversion device;
- wherein said illumination means includes a first light source for detecting a corneal reflected image of said eye;
- and
- a second light source for detecting the boundary between the pupil and the iris of said eye, or the boundary between the iris and the white of said eye with a smaller intensity of a corneal reflected light than that by the first light source.
A camera with a sight line detecting device provided with an illumination device for illuminating an eye of a photographer, and a photoelectric conversion device which photoelectrically converts the light reflected from said eye illuminated by said illumination device, the sight line detecting device detecting a sight line of the photographer based on output from said photoelectric conversion device;
- wherein said illumination device includes a first light source for detecting a corneal reflected image of said eye;
- and
- a second light source for detecting the boundary between the pupil and the iris of said eye, or the boundary between the iris and the white of said eye with a smaller intensity of a corneal reflected light than that by the first light source.
A sight line detecting device provided with illumination means for illuminating an eye of a photographer, and a photoelectric conversion device which photoelectrically converts the light reflected from said eye illuminated by said illumination means, the sight line detecting device detecting a sight line of the photographer based on output from said photoelectric conversion device;
- wherein said illumination means includes a first light source for detecting a corneal reflected image of said eye;
- and
- a second light source for detecting the boundary between the pupil and the iris of said eye, or the boundary between the iris and the white of said eye, with a smaller intensity of a corneal reflected light than that by the first light source.
A sight line detecting device provided with an illumination device for illuminating an eye of a photographer, and a photoelectric conversion device which photoelectrically converts the light reflected from said eye illuminated by said illumination device, the sight line detecting device detecting a sight line of the photographer based on output from said photoelectric conversion device;
- wherein said illumination device includes a first light source for detecting a corneal reflected image of said eye;
- and
- a second light source for detecting the boundary between the pupil and the iris of said eye, or the boundary between the iris and the white of said eye, with a smaller intensity of a corneal reflected light than that by the first light source.
Dependencies are inferred from the claim text.