CPC G02B 27/0172 (2013.01) [G02B 5/3083 (2013.01); G02B 27/0955 (2013.01); G02B 27/283 (2013.01); G02B 27/4211 (2013.01)] | 16 Claims |
1. An optical lens assembly for a near-eye display device, comprising:
a light box having a first layer facing a display screen of the near-eye display device and a second layer facing a diffractive optical element (DOE), the light box being configured to receive a first light from a display screen of the near-eye display device and transmit at least a portion of the first light to the DOE through a folded optical path, wherein the first layer and the second layer are flat; and
the DOE aligned with an optical axis of an eye and configured to receive a second light from the light box and converge the second light to the eye,
wherein the second layer of the light box comprises a first reflective polarizer, a second reflective polarizer, and a half-wave retarder placed in between the first reflective polarizer and the second reflective polarizer; and
a polarization selectivity of the first reflective polarizer being orthogonal to a polarization selectivity of the second reflective polarizer.
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