Image projecting device
OwnerMitsuyoshi Watanabe, Shoji Yamadainventors
Life of this patent
Estimating the term…
Abstract
An image displaying device is provided with at least one light source for emitting a light beam, a modulating system that modulates the light beam in accordance with a video signal, a wavefront curvature modulating system that modulates a wavefront curvature of the light beam, a scanning system that scans the modulated light beam modulated, and an optical system that directs the scanning light beam scanned to a pupil of an observer, thereby forming an image corresponding to he video signal on a retina of an observer. The wavefront curvature modulating system is configured to vary the divergence of the beam incident on the scanning system.
Claims19
An image displaying device, comprising:
- at least one light source that emits a light beam;
- a modulating system that modulates the light beam emitted by said at least one light source in accordance with a video signal;
- a wavefront curvature modulating system that modulates a wavefront curvature of the light beam modulated by said modulating system;
- a scanning system that scans the light beam modulated by the wavefront curvature modulating system;
- and
- an optical system that directs the light beam scanned by said scanning system to a pupil of an observer thereby forming an image corresponding to he video signal on a retina of an observer,
- wherein said wavefront curvature modulating system includes:
- an optical element;
- and
- a moving mechanism that moves said optical element in a direction of an axis of the laser beam.
An image displaying device, comprising:
- at least one light source that emits a light beam;
- a modulating system that modulates the light beam emitted by said at least one light source in accordance with a video signal;
- a wavefront curvature modulating system that modulates a wavefront curvature of the light beam modulated by said modulating system;
- a scanning system that scans the light beam modulated by the wavefront curvature modulating system;
- and
- an optical system that directs the light beam scanned by said scanning system to a pupil of an observer thereby forming an image corresponding to he video signal on a retina of an observer,
- wherein said wavefront curvature modulating system includes an optical element provided with a plurality of reflection surfaces which are arranged at different positions along the axis of the beam.
An image displaying device, comprising:
- at least one light source that emits a light beam;
- a modulating system that modulates the light beam emitted by said at least one light source in accordance with a video signal;
- a wavefront curvature modulating system that modulates a wavefront curvature of the light beam modulated by said modulating system;
- a scanning system that scans the light beam modulated by the wavefront curvature modulating system;
- and
- an optical system that directs the light beam scanned by said scanning system to a pupil of an observer thereby forming an image corresponding to he video signal on a retina of an observer,
- wherein said wavefront curvature modulating system includes a variable focal length optical element whose focal length changes in accordance with variation of at least one of its shape and physical properties.
An image displaying device, comprising:
- at least one light source that emits a light beam;
- a modulating system that modulates the light beam emitted by said at least one light source in accordance with a video signal;
- a scanning system that scans the light beam modulated by the modulating system;
- an optical system that directs the light beam scanned by said scanning system to a pupil of an observer thereby forming
- an image corresponding to he video signal on a retina of an observer;
- and
- a wavefront curvature modulating system that modulates a wavefront curvature of the light beam.
Dependencies are inferred from the claim text.