| CPC G09G 3/003 (2013.01) [G02F 1/134309 (2013.01); G02F 1/13439 (2013.01); G09G 3/3413 (2013.01); G09G 3/36 (2013.01)] | 30 Claims |
|
1. A device comprising:
an optical device configured to deflect target light towards a target device;
a linear polarizer configured to transmit light with a linear polarization state; and
an optical retarder configured to alter a polarization state of light passing through the optical retarder,
wherein the linear polarizer and the optical retarder are configured to cause ambient light to pass through the linear polarizer once and the optical retarder twice sequentially to be blocked by the linear polarizer, and
wherein the optical device, the linear polarizer, and the optical retarder are configured to cause the target light to pass through the optical retarder twice and the linear polarizer once sequentially to be transmitted through the linear polarizer.
|