Single pupil RGB light source
Embodiments of this disclosure systems and methods for displays. In embodiments, a display system includes a light source configured to emit a first light, a lens configured to receive the first light, and an image generator configured receive the first light and emit a second light. The display system further includes a plurality of waveguides, where at least two of the plurality of waveguides include an in-coupling grating configured to selectively couple the second light. In some embodiments, the light source can comprise a single pupil light source having a reflector and a micro-LED array disposed in the reflector.
1 . A display system comprising:
a single pupil light source configured to emit a first light, wherein the light source comprises:
a reflector; and
a micro-LED array disposed in the reflector,
wherein the micro-LED array is configured to output the first light comprising light of a plurality of different colors, wherein the micro-LED array comprises:
a plurality of micro-LEDs, each micro-LED of the plurality of micro-LEDs configured to output light of one of the plurality of colors,
wherein positions of the micro-LEDs are dithered, wherein micro-LEDs of the plurality of micro-LEDs are offset from associated centered positions for the respective micro-LED;
a lens configured to receive the first light;
an image generator configured to receive the first light and emit a second light; and
a plurality of waveguides, wherein at least two of the plurality of waveguides each include an in-coupling grating configured to selectively couple the second light.
2 . The display system of claim 1 , wherein the micro-LED array includes at least a first plurality of micro-LED sources configured to emit at a first wavelength and a second plurality of micro-LEDs sources configured to emit at a second wavelength.
3 . The display system of claim 2 , wherein at least a first in-coupling grating is configured to incouple light corresponding to the first wavelength and a second in-coupling grating is configured to incouple light corresponding to the second wavelength.
4 . The display system of claim 1 , wherein the light source is configured to emit light of a first color at a first time and light of a second color at a second time, wherein the second time is different than the first time.
5 . The display system of claim 1 , wherein the in-coupling gratings of the at least two plurality of waveguides are aligned.
6 . The display system of claim 1 , wherein the micro-LEDs are arranged in rows,
wherein positions of micro-LEDs of different rows are offset by different amounts, and
wherein positions of micro-LEDs of each row are offset by a same amount.
7 . The display system of claim 1 , wherein the reflector comprises a compound parabolic concentrator reflector.
8 . A head wearable device comprising:
a display system comprising:
a single pupil light source configured to emit a first light, wherein the light source comprises:
a reflector; and
a micro-LED array disposed in the reflector,
wherein the micro-LED array is configured to output the first light comprising light of a plurality of different colors, wherein the micro-LED array comprises:
a plurality of micro-LEDs, each micro-LED of the plurality of micro-LEDs configured to output light of one of the plurality of colors,
wherein positions of the micro-LEDs are dithered, wherein micro-LEDs of the plurality of micro-LEDs are offset from associated centered positions for the respective micro-LED;
a lens configured to receive the first light;
an image generator configured to receive the first light and emit a second light; and
a plurality of waveguides, wherein at least two of the plurality of waveguides each include an in-coupling grating configured to selectively couple the second light.
9 . The head wearable device of claim 8 , wherein the micro-LED array includes at least a first plurality of micro-LED sources configured to emit at a first wavelength and a second plurality of micro-LEDs sources configured to emit at a second wavelength.
10 . The head wearable device of claim 9 , wherein at least a first in-coupling grating is configured to incouple light corresponding to the first wavelength and a second in-coupling grating is configured to incouple light corresponding to the second wavelength.
11 . The head wearable device of claim 9 , wherein the light source is configured to emit light of a first color at a first time and light of a second color at a second time, wherein the second time is different than the first time.
12 . The head wearable device of claim 8 , wherein the in-coupling gratings of the at least two plurality of waveguides are aligned.
13 . The head wearable device of claim 8 , wherein the micro-LEDs are arranged in rows,
wherein positions of micro-LEDs of different rows are offset by different amounts, and
wherein positions of micro-LEDs of each row are offset by a same amount.
14 . The head wearable device of claim 8 , wherein the reflector comprises a compound parabolic concentrator reflector.
15 . A display system comprising:
a single pupil light source comprising:
a reflector having an entrance opening and an exit opening; and
a micro-LED array disposed in the reflector and proximate the entrance opening, wherein the micro-LED array is configured to output light of a plurality of different colors, wherein the micro-LED array comprises;
a plurality of independently controllable micro-LEDs each configured to output light of one of the plurality of colors,
wherein positions of the micro-LEDs are dithered, wherein micro-LEDs of the plurality of micro-LEDs are offset from associated centered positions for the respective micro-LED.
16 . The display system of claim 15 , wherein the reflector comprises a compound parabolic concentrator reflector.
17 . The display system of claim 15 , wherein the micro-LED array comprises a plurality of micro-LEDs arranged in at least one selected from a group consisting of a square configuration, a rectangular configuration, a hexagonal configuration, a radial configuration, and a stripe configuration.
18 . The display system of claim 15 , wherein the micro-LEDs are arranged in rows,
wherein positions of micro-LEDs of different rows are offset by different amounts, and
wherein positions of micro-LEDs of each row are offset by a same amount.
19 . The display system of claim 15 , wherein the micro-LED array is configured to emit light of at least three colors.
20 . The display system of claim 15 , wherein the micro-LED array is disposed across the entrance opening.