Patent ID: 11914148
Assignee: ADEIA SEMICONDUCTOR INC.
Field: Optics (Instruments)
Classification: CPC G | IPC F  G

Claim 2:
3. An optical apparatus comprising:
a first lens system,
a second lens system;
a substrate transparent to incident light; wherein the substrate includes opposed first and second major surfaces;
a first waveguide disposed within the substrate;
wherein the first waveguide includes multiple first beam splitting surfaces disposed in a sequence to receive incident light and to transmit a portion of the incident light to a next first beam splitting surface in the sequence and to reflect a portion of the incident light toward the first major surface, and wherein the first waveguide is optically coupled to the first lens system; and
a second waveguide disposed within the substrate;
wherein the second waveguide includes multiple second beam splitting surfaces disposed in a sequence to receive incident light and to transmit a portion of the incident light to a next second beam splitting surface in the sequence and to reflect a portion of the incident light toward the first major surface, and wherein the second waveguide is optically coupled to the second lens system;
wherein the first and second waveguides are disposed within the substrate in an overlapping arrangement such that light reflected by at least one second beam splitting surface of the second waveguide passes between and through a pair of first beam splitting surfaces of the first waveguide, wherein a first surface of the first waveguide abuts a second surface of the second waveguide in the substrate, wherein the light reflected by the at least one second beam splitting surface of the second waveguide passes through the first and second surfaces, and wherein the first and second waveguides are configured to produce display images at corresponding overlapping virtual image planes horizontally offset from one another.