Colinear light source with active optical waveguide coupling
First Claim
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1. A colinear light source comprising:
- a first active optical waveguide formed in a first semiconductor material configured to emit a first light spectrum; and
a second active optical waveguide formed in a second semiconductor material configured to emit a second light spectrum, wherein the second active optical waveguide is configured to receive the first light spectrum from the first active optical waveguide at an entrance facet of the second active optical waveguide, and wherein an exit facet of the second active optical waveguide emits colinear light that includes the first light spectrum and the second light spectrum, the first semiconductor material being different from the second semiconductor material.
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Abstract
A light source includes a first, second, and third active optical waveguide emitting first, second, and third light, respectively. The first, second, and third active optical waveguides are coupled together to mix the first, second, and third light into a colinear illumination light.
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Citations
21 Claims
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1. A colinear light source comprising:
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a first active optical waveguide formed in a first semiconductor material configured to emit a first light spectrum; and a second active optical waveguide formed in a second semiconductor material configured to emit a second light spectrum, wherein the second active optical waveguide is configured to receive the first light spectrum from the first active optical waveguide at an entrance facet of the second active optical waveguide, and wherein an exit facet of the second active optical waveguide emits colinear light that includes the first light spectrum and the second light spectrum, the first semiconductor material being different from the second semiconductor material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A colinear light source comprising:
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a first active optical waveguide configured to emit a first light spectrum; a second active optical waveguide configured to emit a second light spectrum; a third active optical waveguide configured to emit a third light spectrum; and a combining waveguide configured to receive the first, second, and third light spectrum and direct the first, second, and third light spectrum to one exit facet as colinear light, wherein at least a portion of the combining waveguide is formed in a semiconductor material of the third active optical waveguide. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A head mounted display (HMD) comprising:
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a display configured to generate display light; a waveguide configured to receive the display light and direct the display light in an eyeward direction to a user of the HMD; and a light source to illuminate the display with illumination light, wherein the light source includes; a red diode configured to emit red light in a first waveguide of the red diode; a green diode configured to emit green light in a second waveguide of the green diode; a first dichroic filter disposed between the first waveguide and the second waveguide, wherein the first dichroic filter is configured to reflect the green light and pass the red light from the first waveguide to the second waveguide; a blue diode configured to emit blue light in a third waveguide of the blue diode; and a second dichroic filter disposed between the second waveguide and the third waveguide, wherein the second dichroic filter is configured to reflect the blue light and pass the red light and the green light from the second waveguide to the third waveguide. - View Dependent Claims (19, 20, 21)
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Specification