Optical Apparatus and Method for Expanding an Exit Pupil
First Claim
1. An apparatus, comprising:
- a first optical arrangement configured to couple a first component of a light beam into the apparatus, the first component of the light beam having a wavelength within a first spectral range;
a second optical arrangement configured to couple a second component of the light beam into the apparatus, the second component of the light beam having a wavelength within a second spectral range, different to the first spectral range;
a third optical arrangement configured to expand the first component of the light beam in a first dimension to create an expanded first component;
a fourth optical arrangement configured to expand, in a second dimension, the expanded first component to create a further expanded first component, and configured to output the further expanded first component of the light beam from the apparatus;
a fifth optical arrangement configured to expand the second component of the light beam in the second dimension to create an expanded second component; and
a sixth optical arrangement configured to expand, in the first dimension, the expanded second component to create a further expanded second component, and configured to output the further expanded second component from the apparatus.
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Abstract
A first optical arrangement is configured to couple into an apparatus a first component of a light beam having a wavelength within a first spectral range; a second optical arrangement configured to couple a second component of the light beam having a wavelength within a different second spectral range; a third optical arrangement configured to expand the first component in a first dimension to create an expanded first component; a fourth optical arrangement configured to expand, in a second dimension, the expanded first component to create a further expanded first component, and to output the further expanded first component; a fifth optical arrangement configured to expand the second component in the second dimension to create an expanded second component; and a sixth optical arrangement configured to expand, in the first dimension, the expanded second component to create a further expanded second component, and to output the further expanded second component.
175 Citations
27 Claims
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1. An apparatus, comprising:
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a first optical arrangement configured to couple a first component of a light beam into the apparatus, the first component of the light beam having a wavelength within a first spectral range; a second optical arrangement configured to couple a second component of the light beam into the apparatus, the second component of the light beam having a wavelength within a second spectral range, different to the first spectral range;
a third optical arrangement configured to expand the first component of the light beam in a first dimension to create an expanded first component;a fourth optical arrangement configured to expand, in a second dimension, the expanded first component to create a further expanded first component, and configured to output the further expanded first component of the light beam from the apparatus; a fifth optical arrangement configured to expand the second component of the light beam in the second dimension to create an expanded second component; and
a sixth optical arrangement configured to expand, in the first dimension, the expanded second component to create a further expanded second component, and configured to output the further expanded second component from the apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method, comprising:
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coupling a first component of a light beam into an exit pupil expander, the first component of the light beam having a wavelength within a first spectral range; coupling a second component of the light beam into the exit pupil expander, the second component of the light beam having a wavelength within a second spectral range, different to the first spectral range; expanding the first component of the light beam in a first dimension to create an expanded first component; expanding, in a second dimension, the expanded first component to create a further expanded first component; expanding the second component of the light beam in the second dimension to create an expanded second component; expanding, in the first dimension, the expanded second component to create a further expanded second component; outputting the further expanded first component of the light beam from the exit pupil expander; and outputting the further expanded second component from the exit pupil expander. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An apparatus, comprising:
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means for coupling a first component of a light beam into the apparatus, the first component of the light beam having a wavelength within a first spectral range;
means for coupling a second component of the light beam into the apparatus, the second component of the light beam having a wavelength within a second spectral range, different to the first spectral range;means for expanding the first component of the light beam in a first dimension to create an expanded first component; means for expanding, in a second dimension, the expanded first component to create a further expanded first component, and configured to output the further expanded first component of the light beam from the apparatus; means for expanding the second component of the light beam in the second dimension to create an expanded second component; and means for expanding, in the first dimension, the expanded second component to create a further expanded second component, and configured to output the further expanded second component from the apparatus. - View Dependent Claims (27)
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Specification