Lighting apparatus and projection type display, and driving method therefor
First Claim
1. A lighting apparatus used for lighting an optical modulation device in a projection type display, comprising:
- a light source emitting light;
a first fly-eye lens;
a second fly-eye lens comprising a plurality of lenses which include a first lens and a second lens; and
a movable shading plate for adjusting an amount of the light emitted to the optical modulation device by cutting off at least a portion of the light emitted from the light source, the movable shading plate being arranged between the first fly-eye lens and the second fly-eye lens, whereinthe amount of light emitted to the optical modulation device varies in accordance with a movement of the shading plate, andan area of the first lens that is shaded by the movable shading plate is different from an area of the second lens that is shaded by the movable shading plate.
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Accused Products
Abstract
A lighting apparatus used for a projection type display is provided, which can change the incident ray volume to an optical modulation device without changing the optical output intensity of the lamp, and can exhibit excellent effects in expressive power of an image and adaptability to the use environment. The lighting apparatus of the present invention comprises; a light source, two fly-eye lenses constituting a uniform lighting device, and a shading plate arranged between these fly-eye lenses and constituting a dimming device for adjusting the amount of light of the outgoing light from the light source. The angle of inclination of the shading plate is controlled based on an image signal supplied to the optical modulation device, thereby enabling adjustment of the amount of light.
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Citations
44 Claims
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1. A lighting apparatus used for lighting an optical modulation device in a projection type display, comprising:
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a light source emitting light; a first fly-eye lens; a second fly-eye lens comprising a plurality of lenses which include a first lens and a second lens; and a movable shading plate for adjusting an amount of the light emitted to the optical modulation device by cutting off at least a portion of the light emitted from the light source, the movable shading plate being arranged between the first fly-eye lens and the second fly-eye lens, wherein the amount of light emitted to the optical modulation device varies in accordance with a movement of the shading plate, and an area of the first lens that is shaded by the movable shading plate is different from an area of the second lens that is shaded by the movable shading plate. - 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, 24)
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25. A projection type display, comprising:
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a light source emitting light; a first fly-eye lens; a second fly-eye lens comprising a plurality of lenses which include a first lens and a second lens; a movable shading plate for adjusting an amount of the light emitted to the optical modulation device by cutting off at least a portion of the light emitted from the light source, the movable shading plate being arranged between the first fly-eye lens and the second fly-eye lens; an optical modulation device for modulating the light emitted from the light source; and a projection device for projecting the light modulated by the optical modulation device, wherein the amount of light emitted to the optical modulation device varies in accordance with a movement of the shading plate, and an area of the first lens that is shaded by the movable shading plate is different from an area of the second lens that is shaded by the movable shading plate. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A lighting apparatus used for lighting an optical modulation device in a projection type display, comprising:
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a light source emitting light; a fly-eye lens comprising a plurality of lenses which include a first lens and a second lens; and a movable shading plate for adjusting an amount of the light emitted to the optical modulation device by cutting off at least a portion of the light emitted from the light source, the movable shading plate having an edge with an irregular shape, wherein the amount of light emitted to the optical modulation device varies in accordance with a movement of the shading plate, and an area of the first lens that is shaded by the movable shading plate is different from an area of the second lens that is shaded by the movable shading plate.
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36. A lighting apparatus used for lighting an optical modulation device in a projection type display, comprising:
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a light source emitting light; a fly-eye lens comprising a plurality of lenses which include a first lens and a second lens, the first lens and the second lens are adjacent each other; and a movable shading plate for adjusting an amount of the light emitted to the optical modulation device by cutting off at least a portion of the light emitted from the light source, wherein the amount of light emitted to the optical modulation device varies in accordance with a movement of the shading plate, an area of the first lens that is shaded by the movable shading plate is different from an area of the second lens that is shaded by the movable shading plate, and the first lens and the second lens are adjacent to each other along a direction perpendicular to a moving direction of the shading plate.
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37. A lighting apparatus used for lighting an optical modulation device in a projection type display, comprising:
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a light source emitting light; a fly-eye lens comprising a plurality of lenses which include a first lens and a second lens; a convolution lens; and a movable shading plate for adjusting an amount of the light emitted to the optical modulation device by cutting off at least a portion of the light emitted from the light source, the movable shading plate being arranged between the fly-eye lens and the convolution lens, wherein the amount of light emitted to the optical modulation device varies in accordance with a movement of the shading plate, and the movable shading plate cuts off light passing through the first lens differently from light passing through the second lens.
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38. A lighting apparatus used for lighting an optical modulation device in a projection type display, comprising:
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a light source emitting light; a fly-eye lens comprising a plurality of lenses which include a first lens and a second lens; and a movable shading plate for adjusting an amount of the light emitted to the optical modulation device by cutting off at least a portion of the light emitted from the light source, the movable shading plate having an edge with an irregular shape, wherein the amount of light emitted to the optical modulation device varies in accordance with a movement of the shading plate, and the movable shading plate cuts off light passing through the first lens differently from light passing through the second lens.
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39. A lighting apparatus used for lighting an optical modulation device in a projection type display, comprising:
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a light source emitting light; a fly-eye lens comprising a plurality of lenses which include a first lens and a second lens, the first lens and the second lens are adjacent each other; and a movable shading plate for adjusting an amount of the light emitted to the optical modulation device by cutting off at least a portion of the light emitted from the light source, wherein the amount of light emitted to the optical modulation device varies in accordance with a movement of the shading plate, the movable shading plate cuts off light passing through the first lens differently from light passing through the second lens, and the first lens and the second lens are adjacent to each other along a direction perpendicular to a moving direction of the shading plate.
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40. A projection type display, comprising:
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a light source emitting light, a fly-eye lens comprising a plurality of lenses which include a first lens and a second lens; a movable shading plate for adjusting an amount of the light emitted to the optical modulation device by cutting off at least a portion of the light emitted from the light source, the movable shading plate having an edge with an irregular shape; an optical modulation device for modulating the light emitted from the light source; and a projection device for projecting the light modulated by the optical modulation device, wherein the amount of light emitted to the optical modulation device varies in accordance with a movement of the shading plate, and an area of the first lens that is shaded by the movable shading plate is different from an area of the second lens that is shaded by the movable shading plate.
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41. A projection type display, comprising:
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a light source emitting light a fly-eye lens comprising a plurality of lenses which include a first lens and a second lens, the first lens and the second lens are adjacent each other; a movable shading plate for adjusting an amount of the light emitted to the optical modulation device by cutting off at least a portion of the light emitted from the light source, the movable shading plate having an edge with an irregular shape; an optical modulation device for modulating the light emitted from the light source; and a projection device for projecting the light modulated by the optical modulation device, wherein the amount of light emitted to the optical modulation device varies in accordance with a movement of the shading plate, an area of the first lens that is shaded by the movable shading plate is different from an area of the second lens that is shaded by the movable shading plate, and the first lens and the second lens are adjacent to each other along a direction perpendicular to a moving direction of the shading plate.
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42. A projection type display, comprising:
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a light source emitting light; a fly-eye lens comprising a plurality of lenses which include a first lens and a second lens; a convolution lens; a movable shading plate for adjusting an amount of the light emitted to the optical modulation device by cutting off at least a portion of the light emitted from the light source, the movable shading plate being arranged between the fly-eye lens and the convolution lens; an optical modulation device for modulating the light emitted from the light source; and a projection device for projecting the light modulated by the optical modulation device, wherein the amount of light emitted to the optical modulation device varies in accordance with a movement of the shading plate, and the movable shading plate cuts off light passing through the first lens differently from light passing through the second lens.
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43. A projection type display. comprising:
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a light source emitting light; a fly-eye lens comprising a plurality of lenses which include a first lens and a second lens; a movable shading plate for adjusting an amount of the light emitted to the optical modulation device by cutting off at least a portion of the light emitted from the light source, the movable shading plate having an edge with an irregular shape; an optical modulation device for modulating the light emitted from the light source; and a projection device for projecting the light modulated by the optical modulation device, wherein the amount of light emitted to the optical modulation device varies in accordance with a movement of the shading plate, and the movable shading plate cuts off light passing through the first lens differently from light passing through the second lens.
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44. A projection type display, comprising:
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a light source emitting light; a fly-eye lens comprising a plurality of lenses which include a first lens and a second lens, the first lens and the second lens are adjacent each other; a movable shading plate for adjusting an amount of the light emitted to the optical modulation device by cutting off at least a portion of the light emitted from the light source, the movable shading plate having an edge with an irregular shape; an optical modulation device for modulating the light emitted from the light source; and a projection device for projecting the light modulated by the optical modulation device, wherein the amount of light emitted to the optical modulation device varies in accordance with a movement of the shading plate, the movable shading plate cuts off light passing through the first lens differently from light passing through the second lens, and the first lens and the second lens are adjacent to each other along a direction perpendicular to a moving direction of the shading plate.
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Specification