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US 10,761,329 B2Granted
Image projection device
AssigneeQd Laser, Inc.
InventorsMitsuru Sugawara, Makoto Suzuki, Michio Arai
Life of this patent
Estimating the term…
Abstract
An image projection device includes: a projection unit that projects an image light beam forming an image onto a pupil of an eyeball of a user to project the image onto a retina of the eyeball; a detection unit that detects a direction in which the pupil has moved relative to a face of the user and a speed of movement of the pupil; and a control unit that performs different controls of the image when the pupil has moved at different speeds in a same direction.
Claims14
An image projection device comprising:
- a projection unit that includes a light source emitting an image light beam forming an image and a detection light beam, projects the image light beam and the detection light beam onto different areas of an eyeball of a user, and projects the image onto a retina of the eyeball by projecting the image light beam onto a pupil of the eyeball;
- a light detector that detects reflected light that the detection light beam is reflected by the eyeball,
- a detection unit that detects a direction in which the pupil has moved relative to a face of the user and a speed of movement of the pupil based on detection results of the reflected light detected by the light detector;
- and
- a control unit that performs different controls of the image when the pupil has moved at different speeds in a same direction based on the direction in which the pupil has moved and the speed of movement of the pupil that are detected by the detection unit,
- wherein
- the light source emits the detection light beam at a time when the light source does not emit the image light beam,
- the light detector that detects the reflected lights—that the detection light beams projected onto an iris of the eyeball are reflected by the iris, and
- the projection unit projects the detection light beams onto the iris so that a plurality of sets, each formed by two or more detection light beams aligned in a radial direction of the pupil among the detection light beams, is located between a portion on the pupil side of the iris and an outer portion of the iris.
6 more elements
An image projection device comprising:
- a projection unit that projects an image light beam forming an image onto a pupil of an eyeball of a user and detection light beams onto an iris of the eyeball of the user when the image light beam is projected onto the pupil, and projects the image onto a retina of the eyeball by the image light beam projected onto the pupil;
- a light detector that detects reflected lights that the detection light beams are reflected by the eyeball of the user;
- a detection unit that detects a direction in which the pupil has moved and a speed of movement of the pupil based on detection results of the reflected lights that are detected by the light detector;
- and
- a control unit that performs different controls of the image based on the direction in which the pupil has moved and the speed of movement of the pupil that are detected by the detection unit,
- wherein
- the projection unit projects the detection light beams onto the iris so that a plurality of sets, each formed by two or more detection light beams aligned in a radial direction of the pupil among the detection light beams, is located between a portion on the pupil side of the iris and an outer portion of the iris.
4 more elements
Dependencies are inferred from the claim text.