Systems, devices, and methods for astigmatism compensation in a wearable heads-up display
First Claim
1. A wearable heads-up display (“
- WHUD”
) comprising;
a support structure that in use is worn on a head of a user;
a transparent combiner carried by the support structure, wherein the transparent combiner is positioned within a field of view of an eye of the user when the support structure is worn on the head of the user;
a laser projector carried by the support structure, the laser projector comprising;
at least one laser diode to generate laser light;
at least one controllable mirror positioned to receive the laser light from the at least one laser diode and controllably orientable to redirect the laser light towards the transparent combiner; and
at least one anamorphic optical element positioned in an optical path of the laser light in between the at least one laser diode and the transparent combiner, the at least one anamorphic optical element oriented to shape a spot of the laser light to compensate for an astigmatic effect of at least the transparent combiner on the laser light.
3 Assignments
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Accused Products
Abstract
Systems, devices, and methods for preventing image astigmatism in wearable heads-up displays (WHUD) with laser projectors are described. A WHUD includes a support structure carrying a laser projector and an eyeglass lens with a transparent combiner. The laser projector includes at least one laser diode, at least one anamorphic optical element, and at least one controllable mirror. The at least one laser diode generates a laser light that, without optical manipulation, would result in an astigmatic, unfocused image at the eye of the user. The at least one anamorphic optical element anamorphically shapes the spot of the laser light to compensate for an astigmatic effect of at least the transparent combiner. The at least one controllable mirror scans the light onto the transparent combiner and the transparent combiner redirects the light towards an eye of a user to create a focused, non-astigmatic image.
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Citations
11 Claims
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1. A wearable heads-up display (“
- WHUD”
) comprising;a support structure that in use is worn on a head of a user; a transparent combiner carried by the support structure, wherein the transparent combiner is positioned within a field of view of an eye of the user when the support structure is worn on the head of the user; a laser projector carried by the support structure, the laser projector comprising; at least one laser diode to generate laser light; at least one controllable mirror positioned to receive the laser light from the at least one laser diode and controllably orientable to redirect the laser light towards the transparent combiner; and at least one anamorphic optical element positioned in an optical path of the laser light in between the at least one laser diode and the transparent combiner, the at least one anamorphic optical element oriented to shape a spot of the laser light to compensate for an astigmatic effect of at least the transparent combiner on the laser light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- WHUD”
Specification