Back to results
US 8,801,194 B2Granted
Projector with illumination control based on fixation degree
AssigneePanasonic Corporation
InventorsKenji Nakayama, Tetsuro Mizushima, Tatsuo Itoh, Shinichi Kadowaki
Life of this patent
Estimating the term…
Abstract
A projector for projecting an image light including: a laser light source for emitting a laser beam; a light modulator for modulating the laser beam to generate the image light; a projection portion for projecting the image light; a detector for detecting a fixation degree of the projector; and a controller for controlling the power of the image light on the basis of the fixation degree.
Claims12
A projector for projecting image light, comprising:
- a laser light source configured to emit a laser beam;
- a light modulator which modulates the laser beam to generate the image light;
- a projection portion configured to project the image light;
- a detector configured to detect a fixation degree of the projector;
- and
- a controller configured to control a power of the image light based on the fixation degree, wherein
- the detector includes a placement switch which is operated if the projector is placed on a supporting surface configured to support the projector,
- the placement switch becomes a first mode if the projector is placed on the supporting surface, or a second mode if the projector is separated from the supporting surface,
- the controller sets the power of the image light to a first power for displaying an image if the placement switch is in the first mode, and
- the controller sets the power of the image light to a second power which is lower than the first power if the placement switch is in the second mode.
7 more elements
A projector for projecting image light, comprising:
- a laser light source configured to emit a laser beam;
- a light modulator which modulates the laser beam to generate the image light;
- a projection portion configured to project the image light;
- an acceleration sensor configured to detect acceleration caused by displacement of the projector;
- and
- a controller configured to control a power of the image light based on the acceleration, wherein
- the controller sets the power of the image light to a first power for displaying an image if the acceleration sensor detects a first acceleration as the acceleration,
- the controller sets the power of the image light to a second power, which is lower than the first power, if the acceleration sensor detects a second acceleration, which is higher than the first acceleration, as the acceleration, and
- the projection portion projects light which has a wavelength to achieve spectral luminous efficiency no less than 0.5 if the controller sets the power of the image light to the second power.
6 more elements
A projector for projecting image light, comprising:
- a laser light source configured to emit a laser beam;
- a light modulator which modulates the laser beam to generate the image light;
- a projection portion configured to project the image light;
- a detector configured to detect a fixation degree of the projector;
- a controller configured to control a power of the image light based on the fixation degree;
- and
- a shutter configured to move between a close position where an optical path of the image light projected from the projection portion is closed, and an open position where the optical path of the image light is opened, wherein
- the controller controls a position of the shutter between the close and open positions based on the fixation degree.
5 more elements
A projector for projecting image light, comprising:
- a laser light source configured to emit a laser beam;
- a light modulator which modulates the laser beam to generate the image light;
- a projection portion configured to project the image light;
- an acceleration sensor configured to detect acceleration caused by displacement of the projector;
- a controller configured to adjust a power of the image light based on a magnitude of the acceleration;
- and
- an operation switch which a user operates to make the projection portion project the image light if the operation switch receives and external force, wherein
- the controller sets the power of the image light to a first power for displaying an image if the acceleration sensor detects a first acceleration as the acceleration,
- the controller sets the power of the image light to a second power, which is lower than the first power, if the acceleration sensor detects a second acceleration, which is higher than the first acceleration, as the acceleration,
- the controller adjusts the power of the image light based on a magnitude of the acceleration during a first period after the operation switch is operated, and
- the controller makes the projection portion project the image light at the second power from the projection portion if the external force is applied to the operation switch.
8 more elements
A projector for projecting image light, comprising:
- a laser light source configured to emit a laser beam;
- a light modulator which modulates the laser beam to generate the image light;
- a projection portion configured to project the image light;
- an acceleration sensor configured to detect acceleration caused by displacement of the projector;
- a controller configured to adjust a power of the image light based on a magnitude of the acceleration;
- and
- an operation portion which is user operates to make the image light output, wherein
- the controller sets the power of the image light to a first power for displaying an image if the acceleration sensor detects a first acceleration as the acceleration,
- the controller sets the power of the image light to a second power, which is lower than the first power, if the acceleration sensor detects a second acceleration, which is higher than the first acceleration, as the acceleration,
- the controller adjusts the power of the image light based on a magnitude of the acceleration during a first period after the operation portion is operated,
- the operation portion includes a first switch and a second switch, and
- the controller makes the projection portion project the image light if an external force is applied to both the first and second switches.
9 more elements
Dependencies are inferred from the claim text.