Image projection device and projection device
AssigneesQd Laser, Inc., The University of Tokyo
InventorsYasuhiko ARAKAWA, Mitsuru SUGAWARA, Makoto SUZUKI
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Abstract
The present invention is an image projection device that includes: a light source 12 that emits a laser beam 34; a scanning mirror 14 that two-dimensionally scans the laser beam 34 emitted from the light source 12; and a projection mirror 24 that projects scanned light onto a retina 26 of an eyeball 22 of a user to project an image onto the retina 26, the scanned light being composed of the laser beam 34 that has been scanned by the scanning mirror 14, wherein the laser beam 34 emitted from the light source 12 is scanned by using a part of an operating range of the scanning mirror 14.
Claims13
An image projection device comprising:
- a light source that emits a laser beam;
- a scanning unit that two-dimensionally scans the laser beam emitted from the light source;
- and
- a projection mirror that projects scanned light onto a retina of an eyeball of a user to project an image onto the retina, the scanned light being composed of the laser beam that has been scanned by the scanning unit,
- wherein the laser beam emitted from the light source is scanned by using a part of an operating range of the scanning unit.
An image projection device comprising:
- a light source that emits a laser beam;
- a scanning unit that two-dimensionally scans the laser beam emitted from the light source;
- a projection mirror that converges scanned light near a pupil of an eyeball of a user, and then projects the scanned light onto a retina of the eyeball of the user to project an image onto the retina, the scanned light being composed of the laser beam that has been scanned by the scanning unit;
- and
- an optical means that is located in a light path of the scanned light between the scanning unit and the projection mirror, and allows a laser beam in the scanned light to enter the projection mirror as a diverging beam,
- wherein the laser beam in the scanned light travels from the scanning unit in a direction away from the projection mirror, and is then reflected by the optical means to enter the projection mirror as a diverging beam.
A projection device comprising:
- a light source that emits a laser beam;
- and
- a projection mirror that includes a lens of glasses located in front of an eyeball of a user, and projects the laser beam onto the eyeball of the user,
- wherein the lens includes a first lens portion and a second lens portion located in this order from a side of the eyeball of the user, and a diffraction element located between the first lens portion and the second lens portion, and
- the laser beam enters the first lens portion from the side of the eyeball of the user, and is then reflected at an opposite surface of the second lens portion from the eyeball of the user to be projected onto the eyeball of the user.
Dependencies are inferred from the claim text.