Birefringent Ocular for Augmented Reality Imaging
First Claim
1. A display apparatus comprising:
- a) a birefringent ocular having a first index of refraction for light having a first polarization axis and a second index of refraction, lower than the first index by at least 0.1, for light having a second polarization axis that is orthogonal to the first polarization axis, wherein the birefringent ocular defines an eye box for a viewer;
b) an image source that emits image-bearing light having the first polarization axis; and
c) a polarization beam splitter disposed to reflect the image-bearing light of the first polarization axis toward the birefringent ocular and further disposed to transmit, from an object scene, light having the second polarization axis.
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Abstract
A display apparatus has a birefringent ocular having a first index of refraction for light having a first polarization axis and a second index of refraction, lower than the first index by at least 0.1, for light having a second polarization axis that is orthogonal to the first polarization axis, wherein the birefringent ocular defines an eye box for a viewer. An image source emits image-bearing light having the first polarization axis. A polarization beam splitter is disposed to reflect the image-bearing light of the first polarization axis toward the birefringent ocular and further disposed to transmit, from an object scene, light having the second polarization axis.
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Citations
16 Claims
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1. A display apparatus comprising:
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a) a birefringent ocular having a first index of refraction for light having a first polarization axis and a second index of refraction, lower than the first index by at least 0.1, for light having a second polarization axis that is orthogonal to the first polarization axis, wherein the birefringent ocular defines an eye box for a viewer; b) an image source that emits image-bearing light having the first polarization axis; and c) a polarization beam splitter disposed to reflect the image-bearing light of the first polarization axis toward the birefringent ocular and further disposed to transmit, from an object scene, light having the second polarization axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A display apparatus comprising:
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right-eye and left-eye imaging apparatus, each imaging apparatus having; (i) a birefringent ocular having a first index for light having a first polarization axis and a second index of refraction, lower than the first index by at least 0.1, for light having a second polarization axis that is orthogonal to the first polarization axis, wherein the birefringent ocular defines an eye box for a viewer; (ii) an image source that emits image-bearing light having the first polarization axis; and (iii) a polarization beam splitter disposed to reflect the image-bearing light of the first polarization axis toward the birefringent ocular and further disposed to transmit, from an object scene, light having the second polarization axis.
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15. A display apparatus comprising:
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a) a birefringent ocular centered along an optical axis and having a first index for light having a first polarization axis and a second index of refraction, lower than the first index by at least 0.1, for light having a second polarization axis that is orthogonal to the first polarization axis, wherein the birefringent ocular defines an eye box for a viewer; b) first and second image sources that each emit image-bearing light having the first polarization axis; and c) a polarization beam splitter having two surfaces at opposite angles with respect to the optical axis, each surface disposed to reflect the image-bearing light from a corresponding image source toward the birefringent ocular and further disposed to transmit, from an object scene, light having the second polarization axis. - View Dependent Claims (16)
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Specification