Projector that is capable of superimposing and displaying a visible image and an invisible infrared image
First Claim
1. A projector comprising:
- a light source that emits light including visible light and infrared light;
a light separating unit that separates the light from the light source into lights in plural different wavelength regions;
at least one light modulation element for visible light that modulates visible light separated by the light separating unit;
at least one light modulation element for infrared light that modulates one kind of infrared light or at least two kinds of infrared light in wavelength regions different from each other separated by the light separating units;
a light combining unit that combines the modulated light modulated by the light modulation element for visible light and the modulated light modulated by the light modulation element for infrared light into one to form combined light; and
a projecting unit that projects and displays the combined light combined by the light combining unit on a projection surface, whereinthe projector superimposes and displays a visible light image formed by the light modulation element for visible light and an infrared image formed by the light modulation element for infrared light on the identical projection surface, anda physical distance from one of the at least one light modulation element for visible light to the projecting unit and a physical distance from one of the at least one light modulation element for infrared light to the projecting unit are set different from each other such that the physical distance from the one of the at least one light modulation element for infrared light to the projecting unit is greater than the physical distance from the one of the at least one light modulation element for visible light to the projecting unit.
1 Assignment
0 Petitions
Accused Products
Abstract
A projector includes a light source that emits light including visible light and infrared light, a light separating unit that separates the light from the light source into lights in plural different wavelength regions, at least one light modulation element for visible light that modulates visible light separated by the light separating unit, at least one light modulation element for infrared light that modulates one kind of infrared light or at least two kinds of infrared light in wavelength regions different from each other separated by the light separating unit, a light combining unit that combines the modulated light modulated by the light modulation element for visible light and the modulated light modulated by the light modulation element for infrared light into one to form combined light, and a projecting unit that projects and displays the combined light combined by the light combining unit on a projection surface. The projector superimposes and displays a visible light image formed by the light modulation element for visible light and an infrared image formed by the light modulation element for infrared light on the identical projection surface.
28 Citations
12 Claims
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1. A projector comprising:
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a light source that emits light including visible light and infrared light; a light separating unit that separates the light from the light source into lights in plural different wavelength regions; at least one light modulation element for visible light that modulates visible light separated by the light separating unit; at least one light modulation element for infrared light that modulates one kind of infrared light or at least two kinds of infrared light in wavelength regions different from each other separated by the light separating units; a light combining unit that combines the modulated light modulated by the light modulation element for visible light and the modulated light modulated by the light modulation element for infrared light into one to form combined light; and a projecting unit that projects and displays the combined light combined by the light combining unit on a projection surface, wherein the projector superimposes and displays a visible light image formed by the light modulation element for visible light and an infrared image formed by the light modulation element for infrared light on the identical projection surface, and a physical distance from one of the at least one light modulation element for visible light to the projecting unit and a physical distance from one of the at least one light modulation element for infrared light to the projecting unit are set different from each other such that the physical distance from the one of the at least one light modulation element for infrared light to the projecting unit is greater than the physical distance from the one of the at least one light modulation element for visible light to the projecting unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A projector comprising:
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a first light source that emits light including visible light; a second light source that emits light including infrared light; a light separating unit that separates the light from at least the first light source into lights in plural wavelength regions different from one another; at least one light modulation element for visible light that modulates visible light separated by the light separating unit; at least one light modulation element for infrared light that modulates infrared light from the second light source; a light combining unit that combines the modulated light modulated by the light modulation element for visible light and the modulated light modulated by the light modulation element for infrared light into one to form combined light; and a projecting unit that projects and displays the combined light combined by the light combining unit on a projection surface, wherein the projector superimposes and displays a visible light image formed by the light modulation element for visible light and an infrared image formed by the light modulation element for infrared light on the identical projection surface, and a physical distance from one of the at least one light modulation element for visible light to the projecting unit and a physical distance from one of the at least one light modulation element for infrared light to the projecting unit are set different from each other such that the physical distance from the one of the at least one light modulation element for infrared light to the projecting unit is greater than the physical distance from the one of the at least one light modulation element for visible light to the projecting unit. - View Dependent Claims (10)
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11. A projector comprising:
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plural light sources having light emission wavelength regions different from one another; at least one light modulation element for visible light that modulates visible light emitted from each of the plural light sources; at least one light modulation element for infrared light that modulates one kind of infrared light or at least two kinds of infrared light in wavelength regions different from each other emitted from each of the plural light sources; a light combining unit that combines the modulated light modulated by the light modulation element for visible light and the modulated light modulated by the light modulation element for infrared light into one to form combined light; and a projecting unit that projects and displays the combined light combined by the light combining unit on a projection surface, wherein the projector superimposes and displays a visible light image formed by the light modulation element for visible light and an infrared image formed by the light modulation element for infrared light on the identical projection surface, and a physical distance from one of the at least one light modulation element for visible light to the projecting unit and a physical distance from one of the at least one light modulation element for infrared light to the projecting unit are set different from each other such that the physical distance from the one of the at least one light modulation element for infrared light to the projecting unit is greater than the physical distance from the one of the at least one light modulation element for visible light to the projecting unit. - View Dependent Claims (12)
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Specification