Image display device
First Claim
Patent Images
1. An image display device comprising:
- a laser source configured to emit a laser beam;
an image forming element which uses the laser beam to emit image light for displaying an image;
a first diffraction element configured to diffract the image light;
a controller configured to control a display position of the image in response to a wavelength of the laser beam and a temperature of the first diffraction element;
a first thermometer which measures at least one of a temperature of the laser source and a temperature around the laser source to output first temperature data; and
a second thermometer which measures at least one of a temperature of the first diffraction element and a temperature around the first diffraction element to output second temperature data, whereinthe controller controls the display position of the image in response to the first and second temperature data.
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Abstract
An image display device includes a laser source for emitting a laser beam, an image forming element which uses the laser beam to emit image light for displaying an image, a first diffraction element for diffracting the image light, and a controller for controlling a display position of the image on the basis of a wavelength of the laser beam and a temperature of the first diffraction element.
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Citations
17 Claims
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1. An image display device comprising:
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a laser source configured to emit a laser beam; an image forming element which uses the laser beam to emit image light for displaying an image; a first diffraction element configured to diffract the image light; a controller configured to control a display position of the image in response to a wavelength of the laser beam and a temperature of the first diffraction element; a first thermometer which measures at least one of a temperature of the laser source and a temperature around the laser source to output first temperature data; and a second thermometer which measures at least one of a temperature of the first diffraction element and a temperature around the first diffraction element to output second temperature data, wherein the controller controls the display position of the image in response to the first and second temperature data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification