OPTICAL SYSTEM AND METHOD FOR TRANSMITTING A SOURCE IMAGE
First Claim
1. An optical system configured to transmit a source image from which light having a field angle spectrum emanates, the optical system comprising:
- an optical waveguide arrangement in which the light can propagate by total internal reflection;
a diffractive optical input coupling arrangement configured to couple the light emanating from the source image into the optical waveguide arrangement; and
a diffractive optical output coupling arrangement configured to couple the light that has propagated in the optical waveguide arrangement out from the optical waveguide arrangement,wherein;
the input coupling arrangement comprises;
a first input coupling element configured to couple light from a first subfield of the source image having field angles from a first field angle range of the field angle spectrum into the optical waveguide arrangement;
a second input coupling element configured to couple light from a second subfield of the source image having field angles from a second field angle range;
the second subfield is at least partly different from the first subfield;
the second field angle range is at least partly different from the first field angle range;
the transmitted first subfield and the transmitted at least one second subfield are at least partly superimposed on each other after coupling out from the optical waveguide arrangement; and
at least one subfield selected from the group consisting of the first subfield and the second subfield is at least partly arcuately bounded before coupling into the optical waveguide arrangement.
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Accused Products
Abstract
An optical system for transmitting a source image is provided. Light having a field angle spectrum emanates from the source image. The optical system includes an optical waveguide arrangement, in which light can propagate by total internal reflection. The optical system also includes a diffractive optical input coupling arrangement for coupling the light emanating from the source image into the optical waveguide arrangement. The optical system further includes a diffractive optical output coupling arrangement for coupling the light that has propagated in the optical waveguide arrangement out from the optical waveguide arrangement. The disclosure also provides related methods.
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Citations
20 Claims
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1. An optical system configured to transmit a source image from which light having a field angle spectrum emanates, the optical system comprising:
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an optical waveguide arrangement in which the light can propagate by total internal reflection; a diffractive optical input coupling arrangement configured to couple the light emanating from the source image into the optical waveguide arrangement; and a diffractive optical output coupling arrangement configured to couple the light that has propagated in the optical waveguide arrangement out from the optical waveguide arrangement, wherein; the input coupling arrangement comprises; a first input coupling element configured to couple light from a first subfield of the source image having field angles from a first field angle range of the field angle spectrum into the optical waveguide arrangement; a second input coupling element configured to couple light from a second subfield of the source image having field angles from a second field angle range; the second subfield is at least partly different from the first subfield; the second field angle range is at least partly different from the first field angle range; the transmitted first subfield and the transmitted at least one second subfield are at least partly superimposed on each other after coupling out from the optical waveguide arrangement; and at least one subfield selected from the group consisting of the first subfield and the second subfield is at least partly arcuately bounded before coupling into the optical waveguide arrangement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of transmitting a source image from which light having a field angle spectrum emanates, the method comprising:
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dividing the light emanating from the source image into first and second subfields, the light of the first subfield having field angles in a first field angle range of the field angle spectrum, the light of the second subfield having field angles in a second field angle range of the field angle spectrum which is at least partly different from the first field angle range, at least one subfield selected from the group consisting of the first subfield and the second subfield being arcuately bounded; diffractively coupling in light of the first subfield and, separately from the input coupling of the light of the first subfield, diffractively coupling in the second subfield into an optical waveguide arrangement; propagating the light of the first and second subfields in the optical waveguide arrangement; and diffractively coupling out the first and second subfields from the optical waveguide arrangement so that the transmitted first subfield and the transmitted second subfield are at least partly superimposed on one each other after coupling out from the optical waveguide arrangement.
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Specification