Patent ID: 11927836
Assignee: TECTUS CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. Wafer level optics comprising:
a solid transparent wafer having a first flat surface and a second opposing flat surface;
an array of primary reflective regions located on the first flat surface, each primary reflective region having a central opening; and
an array of corresponding secondary reflective regions located on the second flat surface, wherein at least one of the first and secondary reflective regions comprises optical metasurfaces;
wherein for each pair of corresponding primary and secondary reflective regions: image-forming rays are imaged between a first conjugate and a second conjugate; the first conjugate is located to a same side of the wafer as the first flat surface; the second conjugate is located to a same side of the wafer as the second flat surface; and the image-forming rays propagate from the first conjugate through the central opening to the secondary reflective region to the primary reflective region to the second conjugate, either along a forward direction or along a reverse direction; and
at least one of (a) an array of primary baffles located between first ray bundles and second ray bundles, the first ray bundles comprising image-forming rays propagating between the central openings and the secondary reflective regions, and the second ray bundles comprising image-forming rays propagating between the secondary reflective regions and the primary reflective regions; and (b) an array of secondary baffles located between the second ray bundles and third ray bundles, the third ray bundles comprising image-forming rays propagating between the primary reflective regions and the second flat surfaces.