US 12,461,378 B1
Nighttime heads up display unit apparatuses, systems, and methods
Nicolas Steven Peterson, Gilmanton, NH (US); and Michael James Hoppe, Vista, CA (US)
Assigned to KOPIN CORPORATION, Westborough, MA (US)
Filed by KOPIN CORPORATION, Westborough, MA (US)
Filed on Dec. 6, 2024, as Appl. No. 18/972,742.
Claims priority of provisional application 63/663,101, filed on Jun. 22, 2024.
Int. Cl. H04N 23/20 (2023.01); F41G 1/38 (2006.01); G02B 27/01 (2006.01); G09G 3/3208 (2016.01)
CPC G02B 27/0189 (2013.01) [G09G 3/3208 (2013.01); H04N 23/20 (2023.01); F41G 1/38 (2013.01); G09G 2320/0626 (2013.01); G09G 2340/10 (2013.01)] 54 Claims
OG exemplary drawing
 
27. An apparatus to optically fuse first output light containing visual data with second output light emitted from a night vision device, comprising:
a waveguide display, the waveguide display is aligned relative to an eyepiece of the night vision device, such that when the waveguide display is in an ON state and the second output light exits the eyepiece, the second output light passes through the waveguide display;
a display, the display having an input, the input is configured to receive a display input signal containing visual data, the display is configured to emit light responsive to the display input signal; and
an optical device, the optical device is disposed between the display and the waveguide display, the optical device to couple emitted light from the display into the waveguide display, wherein, in the ON state, the waveguide display emits the first output light which optically fuses with the second output light, wherein a brightness of the second output light is monitored and a brightness of the first output light is adjusted to maintain a constant brightness ratio of the first output light to the second output light.