Head-mounted display with an eyeball-tracker integrated system
First Claim
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1. An optical system, comprising:
- a light-transmitting substrate having at least two major surfaces and edges;
at least one optical means for coupling light waves into the substrate so that the light waves are trapped inside the substrate by total internal reflection;
an array of partially reflecting surfaces carried by the substrate wherein the partially reflecting surfaces are not parallel to the major surfaces of the substrate;
at least one light source projecting light waves located within a first optical spectrum;
at least one display source projecting light waves located within a second optical spectrum the first optical spectrum being different from the second optical spectrum, light waves from the light source and light waves from the display source being coupled into the substrate so that the light waves are trapped inside the substrate by total internal reflection, at least one surface of the array of partially reflecting surfaces being substantially transparent to the light waves within substantially the entire second optical spectrum, and the other surfaces of the array of partially reflecting surfaces adjacently disposed and substantially transparent to the coupled light waves within substantially the entire first optical spectrum;
the light waves coupled inside the substrate arriving at the partially reflecting surfaces from a first angular range and a second angular range, wherein all angles of the first angular range are smaller than the angles of the second angular range;
at least one surface of the partially reflecting surfaces being partially reflective for light waves within the first optical spectrum and within the first angular range, and substantially transparent for light waves within the second optical spectrum and within the first and second angular range, and for light waves within the first optical spectrum and within the second angular range; and
the other partially reflecting surfaces being partially reflective for light waves within the second optical spectrum and within the first angular range, and substantially transparent for light waves within the first optical spectrum and within the first and second angular ranges and for light waves within the second optical spectrum and within the second angular range.
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Abstract
Head-mounted display with an eye-tracking system and including a light-transmitting substrate (20) having two major surfaces and edges, optical means for coupling light into said substrate (20) by total internal reflection, partially-reflecting surfaces (22a-22c) carried by the substrate (20) that are not parallel with the major surfaces of the substrate (20), a near-infrared light source (78) and a display source (92) projecting within the photopic spectrum, wherein light from the light source (78) and light from the display source (92) are coupled into the substrate (20) by total internal reflection.
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Citations
28 Claims
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1. An optical system, comprising:
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a light-transmitting substrate having at least two major surfaces and edges; at least one optical means for coupling light waves into the substrate so that the light waves are trapped inside the substrate by total internal reflection; an array of partially reflecting surfaces carried by the substrate wherein the partially reflecting surfaces are not parallel to the major surfaces of the substrate; at least one light source projecting light waves located within a first optical spectrum; at least one display source projecting light waves located within a second optical spectrum the first optical spectrum being different from the second optical spectrum, light waves from the light source and light waves from the display source being coupled into the substrate so that the light waves are trapped inside the substrate by total internal reflection, at least one surface of the array of partially reflecting surfaces being substantially transparent to the light waves within substantially the entire second optical spectrum, and the other surfaces of the array of partially reflecting surfaces adjacently disposed and substantially transparent to the coupled light waves within substantially the entire first optical spectrum; the light waves coupled inside the substrate arriving at the partially reflecting surfaces from a first angular range and a second angular range, wherein all angles of the first angular range are smaller than the angles of the second angular range; at least one surface of the partially reflecting surfaces being partially reflective for light waves within the first optical spectrum and within the first angular range, and substantially transparent for light waves within the second optical spectrum and within the first and second angular range, and for light waves within the first optical spectrum and within the second angular range; and the other partially reflecting surfaces being partially reflective for light waves within the second optical spectrum and within the first angular range, and substantially transparent for light waves within the first optical spectrum and within the first and second angular ranges and for light waves within the second optical spectrum and within the second angular range. - 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, 25, 26, 27, 28)
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Specification