Visual axis detecting apparatus and method including scanning light source, and image device using same
First Claim
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1. A visual axis detecting device comprising:
- a liquid crystal display having a light source for projecting a light image onto an eye of an observer;
illuminating means, separate from and operable independent of said light source of said liquid crystal display, for illuminating the eye of the observer with light;
means for scanning the eye of the observer with light from said illuminating means;
photoelectric conversion means for receiving light which has been reflected from the eye of the observer; and
means for calculating a visual axis orientation of the eye of the observer on the basis of a scan timing of said illuminating means and the output of said photoelectric conversion means.
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Abstract
A visual axis detecting method and apparatus comprising a device that illuminates an eye of an observer with a scanning light source, a photoelectric conversion device that receives reflection light from the eye of the observer, and an arithmetic device that detects Purkinje images and an iris image or a pupil image of the observer'"'"'s eye on the basis of an output from the photoelectric conversion device, and that detects a direction of a visual axis of the observer from positions of the detected images.
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Citations
53 Claims
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1. A visual axis detecting device comprising:
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a liquid crystal display having a light source for projecting a light image onto an eye of an observer; illuminating means, separate from and operable independent of said light source of said liquid crystal display, for illuminating the eye of the observer with light; means for scanning the eye of the observer with light from said illuminating means; photoelectric conversion means for receiving light which has been reflected from the eye of the observer; and means for calculating a visual axis orientation of the eye of the observer on the basis of a scan timing of said illuminating means and the output of said photoelectric conversion means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An image apparatus comprising:
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a liquid crystal display having a light source for projecting a light image onto the eye of an observer; illuminating means, separate from and operable independent of said light source of said liquid crystal display, for illuminating the eye of the observer with light; means for scanning the eye of the observer with light from said illuminating means; photoelectric conversion means for receiving light which has been reflected from the eye of the observer; means for calculating a visual axis orientation of the eye of the observer on the basis of a scan timing of said illuminating means and the output of said photoelectric conversion means; and control means for controlling a signal output in the image apparatus or to an external device, on the basis of the visual axis orientation calculated by said calculating means. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. A visual axis detecting method comprising the steps of:
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projecting a light image of a liquid crystal display onto an eye of an observer using a light source of the liquid crystal display; scanning the eye of the observer with light from illuminating means separate from and operable independent of the light source of the liquid crystal display; receiving by photoelectric conversion means light from the illumination means reflected from the eye of the observer; and detecting a visual axis of the eye of the observer based on an output of the photoelectric conversion means and a timing of said scanning step. - View Dependent Claims (53)
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Specification