Projection display device
First Claim
1. A projection display device for displaying an image by projecting light beams onto a projection plane, comprising:
- light sources for emitting the light beams; and
light scanning elements for scanning the emitted light beams toward the projection plane, wherein the light beams are radiated as pulses of light corresponding to respective pixels by splitting the light beams between adjacent pixels when the light beams are being scanned.
1 Assignment
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Accused Products
Abstract
Light beams having different wavelengths emitted from red and blue semiconductor lasers and a laser diode pumped green solid-state laser are incident on respectively different surfaces of a color combining element and are overlaid on a single light path. Multiple beam interference films of the color combining element allow only the light beams having the oscillating wavelengths corresponding to the respective light sources to pass therethrough or reflect thereon so as to combine the light beams. A collimator collimates the light beams so that the beam waist of the light beams lies around a projection plane. When two-dimensional scanning is performed by radiating the light beams onto a micromechanical mirror and then onto a galvanometer mirror for scanning light in the horizontal and vertical directions, respectively, a color image is displayed on the projection plane by arranging pixels in array, each pixel consisting of overlapping pulses of light of three colors.
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Citations
23 Claims
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1. A projection display device for displaying an image by projecting light beams onto a projection plane, comprising:
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light sources for emitting the light beams; and
light scanning elements for scanning the emitted light beams toward the projection plane, wherein the light beams are radiated as pulses of light corresponding to respective pixels by splitting the light beams between adjacent pixels when the light beams are being scanned. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification