Display device
First Claim
Patent Images
1. A display device, comprising:
- a point light source that emits white light;
a spatial light modulator spatially modulating the light emitted from the point light source to produce an imaging light; and
an optical imaging lens receiving the imaging light modulated by the spatial light modulator and focusing the imaging light to produce an image, wherein the point light source has a light emitting area of less than or equal to 1 mm2 and the spatial light modulator emits the modulated imaging light at a small angle of emission such that almost all of the modulated imaging light falls incident on the optical imaging lens.
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Accused Products
Abstract
A display device has a white point light source, a condenser lens, a liquid crystal display, and an imaging lens. The white point light source has a substantial conjugate relationship with a user'"'"'s pupil that is located on the front surface of the user'"'"'s eyeball. The liquid crystal display has a substantial conjugate relationship with the user'"'"'s retina. The scattering plate is further provided to broaden the bundle width of the light at a location in the vicinity of the user'"'"'s pupil.
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Citations
28 Claims
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1. A display device, comprising:
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a point light source that emits white light;
a spatial light modulator spatially modulating the light emitted from the point light source to produce an imaging light; and
an optical imaging lens receiving the imaging light modulated by the spatial light modulator and focusing the imaging light to produce an image, wherein the point light source has a light emitting area of less than or equal to 1 mm2 and the spatial light modulator emits the modulated imaging light at a small angle of emission such that almost all of the modulated imaging light falls incident on the optical imaging lens.
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2. A display device, comprising:
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a point light source that emits white light;
an optical light-collecting system gathering the light from the point light source;
a spatial light modulator spatially modulating the light emitted from the point light source to produce an imaging light; and
an optical imaging system receiving the imaging light modulated by the spatial light modulator and producing an image, wherein the point light source has a light emitting area of less than or equal to 1 mm2 and the spatial light modulator receives the light collected by the optical light-collecting system and spatially modulates the light to produce the imaging light. - View Dependent Claims (3, 5, 6, 7, 10, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23)
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4. A display device, comprising:
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a point light source that emits white light;
a spatial light modulator spatially modulating the light emitted from the point light source to produce an imaging light;
an optical imaging system receiving the imaging light modulated by the spatial light modulator and producing an image; and
an optical light-collecting system gathering the light from the point light source, the spatial light modulator receiving the light collected by the optical light-collecting system and spatially modulating the light to produce the imaging light, wherein the optical imaging system is located to cause the point light source and a first position that is located behind the optical imaging system and that is separated from the optical imaging system by a desired distance to have substantially a conjugate relationship and to cause the spatial light modulator and a second position that is located behind the first position and that is separated from the first position by a distance substantially equal to a distance between a pupil and a retina of a user'"'"'s eye to have substantially a conjugate relationship.
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8. A display device, comprising:
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a point light source that emits white light;
a spatial light modulator spatially modulating the light emitted from the point light source to produce an imaging light;
an optical imaging system receiving the imaging light modulated by the spatial light modulator and producing an image;
an optical light-collecting system gathering the light from the point light source, the spatial light modulator receiving the light collected by the optical light-collecting system and spatially modulating the light to produce the imaging light; and
a scattering plate located between the point light source and the spatial light modulator, wherein the optical imaging system is located to cause the point light source and a first position that is located behind the optical imaging system and that is separated from the optical imaging system by a desired distance to have substantially a conjugate relationship and to cause the spatial light modulator and a second position that is located behind the first position and that is separated from the first position by a distance substantially equal to a distance between a pupil and a retina of a user'"'"'s eye to have substantially a conjugate relationship.
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9. A display device, comprising:
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a point light source that emits white light;
a spatial light modulator spatially modulating the light emitted from the point light source to produce an imaging light;
an optical imaging system receiving the imaging light modulated by the spatial light modulator and producing an image;
an optical light-collecting system gathering the light from the point light source, the spatial light modulator receiving the light collected by the optical light-collecting system and spatially modulating the light to produce the imaging light; and
a scattering plate located between the point light source and the spatial light modulator, wherein the scattering plate scatters the light with a luminous intensity distribution of I(θ
)=cosnθ
where I is the luminous intensity and θ
is a deviation angle from a predetermined reference direction normal to the scattering plate and where n is greater than or equal to three and less than or equal to 100.
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11. A display device, comprising:
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a point light source that emits white light;
a spatial light modulator spatially modulating the light emitted from the point light source to produce an imaging light;
an optical imaging system receiving the imaging light modulated by the spatial light modulator and producing an image;
an optical light-collecting system gathering the light from the point light source, the spatial light modulator receiving the light collected by the optical light-collecting system and spatially modulating the light to produce the imaging light; and
a casing that houses therein the point light source, the optical light-collecting system, the spatial light modulator, and the optical imaging system, wherein the casing has a portion for being mounted on a stand.
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18. A display device, comprising:
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a point light source that emits white light;
a spatial light modulator spatially modulating the light emitted from the point light source to produce an imaging light;
an optical imaging system receiving the imaging light modulated by the spatial light modulator and producing an image;
an optical light-collecting system gathering the light from the point light source, the spatial light modulator receiving the light collected by the optical light-collecting system and spatially modulating the light to produce the imaging light;
a casing that houses therein the point light source, the optical light-collecting system, the spatial light modulator, and the optical imaging system;
a holding portion that enables a user to transport the casing; and
an image pick up device for picking up an image of the user'"'"'s face, wherein the optical imaging system includes a half mirror for allowing the light from the spatial light modulator to reflect thereat to reach the user'"'"'s eye, while allowing the light from the user'"'"'s face to pass therethrough to reach the image pick up device. - View Dependent Claims (24)
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25. A display device, comprising:
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a point light source that emits white light;
a spatial light modulator spatially modulating the light emitted from the point light source to produce an imaging light; and
an optical imaging system receiving the imaging light modulated by the spatial light modulator and producing an image, wherein the point light source includes a blue light emission diode provided with a fluorescent material at its outside portion. - View Dependent Claims (26)
an optical light-collecting system gathering the light from the point light source, the spatial light modulator receiving the light collected by the optical light-collecting system and spatially modulating the light to produce the imaging light; and
a scattering plate located between the point light source and the spatial light modulator.
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27. A display device, comprising:
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a point light source that emits white light;
a spatial light modulator spatially modulating the light emitted from the point light source to produce an imaging light; and
an optical imaging system receiving the imaging light modulated by the spatial light modulator and producing an image, wherein the point light source includes an ultraviolet light emission diode provided with a fluorescent material at its outside portion. - View Dependent Claims (28)
an optical light-collecting system gathering the light from the point light source, the spatial light modulator receiving the light collected by the optical light-collecting system and spatially modulating the light to produce the imaging light; and
a scattering plate located between the point light source and the spatial light modulator.
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Specification