Head wearable display using powerless optical combiner
First Claim
1. An optical apparatus for a head wearable display, comprising:
- a lightguide to receive, at a first side of the lightguide, display light having an initial cross-section size into the lightguide and guide the display light down the lightguide, wherein the lightguide includes a first plurality of reflective optical elements that redirect the display light out of a second side of the lightguide with an expanded cross-section size that is larger than the initial cross-section size, wherein the first plurality of reflective optical elements comprise a linear array of planar surfaces offset from each other and obliquely oriented relative to the second side; and
an optical combiner separate from, and obliquely oriented relative to, the lightguide, the optical combiner to combine the display light having the expanded cross-section with ambient scene light, the optical combiner including;
an ambient scene side;
an eye-ward side; and
a second plurality of reflective optical elements that pass at least a portion of the ambient scene light incident along an eye-ward direction on the ambient scene side through to the eye-ward side and redirect the display light having the expanded cross-section and incident on the eye-ward side to the eye-ward direction, wherein the second plurality of reflective optical elements comprise a linear array of planar surfaces offset from each other and obliquely oriented relative to the ambient and eye-ward sides, and wherein the second plurality of reflective optical elements are substantially without lensing power.
2 Assignments
0 Petitions
Accused Products
Abstract
An optical apparatus includes a lightguide and an optical combiner. The lightguide receives display light having an initial cross-section size and guides the display light down the lightguide. The lightguide includes internal optical elements that redirect the display light out of the lightguide with an expanded cross-section size that is larger than the initial cross-section size. The optical combiner combines the display light having the expanded cross-section with ambient scene light. The optical combiner includes an ambient scene side, an eye-ward side, and one or more reflective optical elements that pass at least a portion of the ambient scene light incident along an eye-ward direction on the ambient scene side through to the eye-ward side and redirect the display light having the expanded cross-section and incident on the eye-ward side to the eye-ward direction. The one or more reflective optical elements are substantially without lensing power.
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Citations
14 Claims
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1. An optical apparatus for a head wearable display, comprising:
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a lightguide to receive, at a first side of the lightguide, display light having an initial cross-section size into the lightguide and guide the display light down the lightguide, wherein the lightguide includes a first plurality of reflective optical elements that redirect the display light out of a second side of the lightguide with an expanded cross-section size that is larger than the initial cross-section size, wherein the first plurality of reflective optical elements comprise a linear array of planar surfaces offset from each other and obliquely oriented relative to the second side; and an optical combiner separate from, and obliquely oriented relative to, the lightguide, the optical combiner to combine the display light having the expanded cross-section with ambient scene light, the optical combiner including; an ambient scene side; an eye-ward side; and a second plurality of reflective optical elements that pass at least a portion of the ambient scene light incident along an eye-ward direction on the ambient scene side through to the eye-ward side and redirect the display light having the expanded cross-section and incident on the eye-ward side to the eye-ward direction, wherein the second plurality of reflective optical elements comprise a linear array of planar surfaces offset from each other and obliquely oriented relative to the ambient and eye-ward sides, and wherein the second plurality of reflective optical elements are substantially without lensing power. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A head wearable display comprising:
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a display module to generate display light; a lightguide to receive, at a first side of the lightguide, the display light having an initial cross-section size into the lightguide and guide the display light down the lightguide, wherein the lightguide includes a first plurality of reflective optical elements that redirect the display light out of a second side of the lightguide with an expanded cross-section size that is larger than the initial cross-section size, and wherein the first plurality of reflective optical elements comprise a linear array of planar surfaces offset from each other and obliquely oriented relative to the second side; an optical combiner separate from and obliquely oriented relative to the lightguide, the optical combiner including a second plurality of reflective optical elements disposed between an ambient scene side and an eye-ward side, the second plurality of reflective optical elements configured to reflect the display light incident on the eye-ward side to an eye-ward direction while passing ambient scene light incident on the ambient scene side along the eye-ward direction, wherein the second plurality of reflective optical elements comprise a linear array of planar surfaces offset from each other and obliquely oriented relative to the ambient and eye-ward sides, and wherein the second plurality of reflective optical elements are substantially without lensing power; and a frame assembly to support the display module, the lightguide, and the optical combiner for wearing on a head of a user with the optical combiner positioned in front of an eye of the user. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification