Patent ID: 11947114
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A display apparatus comprising:
an image-providing device configured to provide an image; and
a combiner configured to combine the image emitted from the image-providing device and an external foreground,
wherein the combiner comprises:
a holographic lens having a plurality of positions configured to form an imaging optical system that images lights emitted from a plurality of pixels of the image providing device on a corresponding plurality of virtual image points; and
a phase profile obtained through an optimization process for each position of the plurality of positions,
wherein, according to the phase profile, a phase of each position of the plurality of positions of the holographic lens is formed to have an optimized value satisfying

min∥T·(δ−ρ)−øtarget∥2,

where p is a phase of light emitted from each pixel among the plurality of pixels of the image-providing device, Φ is a phase of the holographic lens, δ is a phase of light emitted from a virtual image, T is a projection matrix, and Φtarget is a phase providing an intended virtual image.