Wearable display apparatus comprising an optical assembly having an optical integrator rod
First Claim
1. A wearable display apparatus comprising:
- a reflective light modulator having a front;
a light guide plate placed at the front of the light modulator, the light guide plate having a first and a second major surface opposite to each other, and a light incidence surface connected with the first and second major surfaces, the light guide plate being configured to direct light received at the light incidence surface through the first major surface toward the light modulator for modulation;
a plurality of monochromatic light sources of different colors, the monochromatic light sources being operable to emit light of the different colors in a sequential manner; and
an optical assembly arranged adjacent to the light incidence surface of the light guide plate, the optical assembly being configured to homogenize and distribute the light emitted by each of the monochromatic light sources across the light incidence surface, wherein the optical assembly includes an optical integrator rod having an interior delimited by a plurality of reflective sidewalls, and a light guide member arranged along the light incidence surface of the light guide plate, the light guide member having a third and a fourth major surface opposite to each other that extend between a first and a second end of the light guide member, the third major surface being oriented toward the light incidence surface of the light guide plate;
wherein the light from each of the monochromatic light sources undergoes internal reflection while propagating through the optical integrator rod, enters the light guide member via a light entering surface on the first end of the light guide member and exits the light guide member through the third major surface thereof.
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Accused Products
Abstract
A wearable display apparatus includes a reflective light modulator having a front, a light guide plate placed at the front of the light modulator, a plurality of monochromatic light sources of different colors, and an optical assembly. The light guide plate has a first and a second major surface opposite to each other, and a light incidence surface connected with the first and second major surfaces, the light guide plate directing light received at the light incidence surface through the first major surface toward the light modulator. The monochromatic light sources are operable to emit light of different colors in a sequential manner. The optical assembly is arranged adjacent to the light incidence surface of the light guide plate, and is configured to homogenize and distribute the light emitted by each of the monochromatic light sources across the light incidence surface.
12 Citations
15 Claims
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1. A wearable display apparatus comprising:
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a reflective light modulator having a front; a light guide plate placed at the front of the light modulator, the light guide plate having a first and a second major surface opposite to each other, and a light incidence surface connected with the first and second major surfaces, the light guide plate being configured to direct light received at the light incidence surface through the first major surface toward the light modulator for modulation; a plurality of monochromatic light sources of different colors, the monochromatic light sources being operable to emit light of the different colors in a sequential manner; and an optical assembly arranged adjacent to the light incidence surface of the light guide plate, the optical assembly being configured to homogenize and distribute the light emitted by each of the monochromatic light sources across the light incidence surface, wherein the optical assembly includes an optical integrator rod having an interior delimited by a plurality of reflective sidewalls, and a light guide member arranged along the light incidence surface of the light guide plate, the light guide member having a third and a fourth major surface opposite to each other that extend between a first and a second end of the light guide member, the third major surface being oriented toward the light incidence surface of the light guide plate; wherein the light from each of the monochromatic light sources undergoes internal reflection while propagating through the optical integrator rod, enters the light guide member via a light entering surface on the first end of the light guide member and exits the light guide member through the third major surface thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wearable display apparatus comprising:
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a reflective light modulator having a front; a light guide plate placed at the front of the light modulator, the light guide plate having a first and a second major surface opposite to each other, and a light incidence surface connected with the first and second major surfaces, the light guide plate being configured to direct light received at the light incidence surface through the first major surface toward the light modulator for modulation; a plurality of monochromatic light sources of different colors, the monochromatic light sources being operable to emit light of the different colors in a sequential manner; and an optical assembly arranged adjacent to the light incidence surface of the light guide plate, the optical assembly being configured to homogenize and distribute the light emitted by each of the monochromatic light sources across the light incidence surface; wherein the optical assembly includes an optical integrator rod, a light guide member, and a diffusing sheet arranged between the optical integrator rod and the light guide member, the light emitted from each of the monochromatic light sources sequentially travels through the optical integrator rod, the diffusing sheet and the light guide member, the light guide member directing the light toward the light incidence surface of the light guide plate. - View Dependent Claims (9, 10, 12)
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11. A wearable display apparatus comprising:
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a reflective light modulator having a front; a light guide plate placed at the front of the light modulator, the light guide plate having a first and a second major surface opposite to each other, and a light incidence surface connected with the first and second major surfaces, the light guide plate being configured to direct light received at the light incidence surface through the first major surface toward the light modulator for modulation; a plurality of monochromatic light sources of different colors, the monochromatic light sources being operable to emit light of the different colors in a sequential manner; and an optical assembly arranged adjacent to the light incidence surface of the light guide plate, the optical assembly being configured to homogenize and distribute the light emitted by each of the monochromatic light sources across the light incidence surface; wherein the light guide plate has a first side where is provided the light incidence surface, and a second and a third side opposite to each other that are contiguous to the first side, and the monochromatic light sources of different colors include a plurality of first monochromatic light sources and a plurality of second monochromatic light sources respectively arranged at the second and third side of the light guide plate; wherein the optical assembly includes a first and a second optical integrator rod, a light guide member, and a first and a second diffusing sheet respectively interposed between the light guide member and the first and second optical integrator rods, light emitted from each of the first monochromatic light sources traveling through the first optical integrator rod and the first diffusing sheet and being redirected by the light guide member toward the light incidence surface of the light guide plate, and light emitted from each of the second monochromatic light sources traveling through the second optical integrator rod and the second diffusing sheet and being redirected by the light guide member toward the light incidence surface of the light guide plate. - View Dependent Claims (13, 14)
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15. A wearable display apparatus comprising:
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a reflective light modulator having a front; a light guide plate placed at the front of the light modulator, the light guide plate having a first and a second major surface opposite to each other, and a light incidence surface connected with the first and second major surfaces, the light guide plate being configured to direct light received at the light incidence surface through the first major surface toward the light modulator for modulation; a plurality of monochromatic light sources of different colors, the monochromatic light sources being operable to emit light of the different colors in a sequential manner; and an optical assembly arranged adjacent to the light incidence surface of the light guide plate, the optical assembly being configured to homogenize and distribute the light emitted by each of the monochromatic light sources across the light incidence surface; wherein the optical assembly includes an optical integrator rod, a Fresnel lens, and a diffusing sheet interposed between the optical integrator rod and the Fresnel lens, light emitted from each of the monochromatic light sources sequentially traveling through the optical integrator rod, the diffusing sheet and the Fresnel lens before entering the light guide plate through the light incidence surface.
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Specification