Mirror-based light path combination for light sources
View Patent ↗Embodiments of the present invention include a method, apparatus, and system for a mirror assembly sequentially optically coupling a plurality of light sources to downstream projection components. Other embodiments may be described and claimed.
1. An apparatus comprising:
a plurality of light sources, including at least a first light emitting device (LED), a second LED, and a third LED, configured to emit light;
a light valve configured to manipulate received light into a predetermined image; and
a mirror assembly configured to operate to sequentially optically couple each of the plurality of light sources to the light valve, the mirror assembly comprising:
a mirror wheel having an axle, a transparent portion, and a non-transparent portion, the mirror wheel configured to rotate the transparent portion and the non-transparent portion around the axle to sequentially optically couple each of the plurality of light sources to the light valve, wherein the mirror wheel has a first surface and a second surface and the non-transparent portion has a mirror element on the first surface of the mirror wheel;
wherein the mirror assembly further comprises another mirror element configured:
to receive light from the first LED reflected off of the mirror element of the mirror wheel;
to receive light from the second LED transmitted through the transparent portion; and
to reflect received light towards the light valve; and
wherein the third LED is arranged relative to the mirror wheel such that light from the third LED is incident upon the second surface of the mirror wheel.
2. The apparatus of claim 1 , wherein the mirror wheel is arranged relative to the first and second LED such that light from the first LED is incident upon the first surface of the mirror wheel and the light from the second LED is incident upon the second surface of the mirror wheel.
3. The apparatus of claim 1 , wherein the mirror wheel is configured to optically couple the first LED to the light valve by positioning the mirror element in a manner to reflect the light from the first LED towards the light valve and the mirror wheel is configured to optically couple the second LED to the light valve by positioning the transparent portion in a manner to transmit light from the second LED towards the light valve.
4. An apparatus comprising:
a plurality of light sources, including at least a first light emitting device (LED), a second LED, and a third LED, configured to emit light;
a light valve configured to manipulate received light into a predetermined image; and
a mirror assembly configured to operate to sequentially optically couple each of the plurality of light sources to the light valve, the mirror assembly comprising:
a mirror wheel having an axle, a transparent portion, and a non-transparent portion, the mirror wheel configured to rotate the transparent portion and the non-transparent portion around the axle to sequentially optically couple each of the plurality of light sources to the light valve, wherein the mirror wheel has a first surface and a second surface and the non-transparent portion has a mirror element on the first surface of the mirror wheel;
wherein the mirror assembly further comprises another mirror element configured:
to receive light from the first LED reflected off of the mirror element of the mirror wheel;
to receive light from the second LED transmitted through the transparent portion; and
to reflect received light towards the light valve; and
wherein the mirror wheel is further configured to propagate the light reflected from the another mirror element towards the light valve.
5. A method comprising:
providing light with a plurality of light sources, including at least a first light emitting device (LED), a second LED, and a third LED;
operating a mirror assembly to sequentially couple the light from each of the plurality of light sources to a light valve, the mirror assembly comprising a mirror wheel having an axle, a transparent portion, and a non-transparent portion, wherein the mirror wheel has a first surface and a second surface and the non-transparent portion has a first mirror element on the first surface of the mirror wheel, wherein the mirror assembly further comprises a second mirror element, and
manipulating the light, with the light valve, into a predetermined image;
wherein said operating the mirror assembly further comprises:
rotating the transparent portion and the non-transparent portion around the axle to sequentially optically couple each of the plurality of light sources to the light valve;
receiving, at the second mirror element, light from the first LED reflected off of the first mirror element of the mirror wheel;
receiving, at the second mirror element, light from the second LED transmitted through the transparent portion;
reflecting, by the second mirror element, light received from the first LED and second LED towards the light valve; and
propagating, by the mirror wheel, light reflected from the second mirror element towards the light valve.
6. The method of claim 5 , wherein said providing of light with the plurality of light sources further comprises:
providing light with each of the plurality of light sources in respective, substantially non-overlapping light-emission periods.
7. The method of claim 6 , further comprising:
coordinating operating of the mirror assembly with the light-emission periods.
8. A system comprising:
a controller configured to receive video signals from a video source and to generate control signals based at least in part on received video signals;
a light valve coupled to the controller and configured to manipulate received light into an image based at least in part on the control signals;
a plurality of light sources, including at least a first light emitting device (LED), a second LED, and a third LED, configured to emit light; and
a mirror assembly configured to operate to sequentially optically couple each of the plurality of light sources to the light valve, the mirror assembly comprising:
a mirror wheel having an axle, a transparent portion, and a non-transparent portion, the mirror wheel configured to rotate the transparent portion and the non-transparent portion around the axle to sequentially optically couple each of the plurality of light sources to the light valve, wherein the mirror wheel has a first surface and a second surface and the non-transparent portion has a mirror element on the first surface of the mirror wheel;
wherein the mirror assembly further comprises another mirror element configured:
to receive light from the first LED reflected off of the mirror element of the mirror wheel;
to receive light from the second LED transmitted through the transparent portion; and
to reflect received light towards the light valve; and
wherein the third LED is arranged relative to the mirror wheel such that light from the third LED is incident upon the second surface of the mirror wheel.
9. The system of claim 8 , wherein the mirror wheel is arranged relative to the first and second LED such that light from the first LED is incident upon the first surface of the mirror wheel and the light from the second LED is incident upon the second surface of the mirror wheel.
10. The system of claim 8 , wherein the mirror wheel is configured to optically couple the first LED to the light valve by positioning the mirror element in a manner to reflect the light from the first LED towards the light valve and the mirror wheel is configured to optically couple the second LED to the light valve by positioning the transparent portion in a manner to transmit light from the second LED towards the light valve.
11. A system comprising:
a controller configured to receive video signals from a video source and to generate control signals based at least in part on received video signals;
a light valve coupled to the controller and configured to manipulate received light into an image based at least in part on the control signals;
a plurality of light sources, including at least a first light emitting device (LED), a second LED, and a third LED, configured to emit light; and
a mirror assembly configured to operate to sequentially optically couple each of the plurality of light sources to the light valve, the mirror assembly comprising:
a mirror wheel having an axle, a transparent portion, and a non-transparent portion, the mirror wheel configured to rotate the transparent portion and the non-transparent portion around the axle to sequentially optically couple each of the plurality of light sources to the light valve, wherein the mirror wheel has a first surface and a second surface and the non-transparent portion has a mirror element on the first surface of the mirror wheel;
wherein the mirror assembly further comprises another mirror element configured:
to receive light from the first LED reflected off of the mirror element of the mirror wheel;
to receive light from the second LED transmitted through the transparent portion; and
to reflect received light towards the light valve; and
wherein the mirror wheel is further configured to propagate the light reflected from the another mirror element towards the light valve.
12. The system of claim 8 , wherein the controller is further coupled to the mirror assembly and the plurality of light sources and configured to activate the plurality of light sources to emit light in coordination with operation of the mirror assembly.
13. The apparatus of claim 4 , wherein the mirror wheel is arranged relative to the first and second LED such that light from the first LED is incident upon the first surface of the mirror wheel and the light from the second LED is incident upon the second surface of the mirror wheel.
14. The apparatus of claim 4 , wherein the mirror wheel is configured to optically couple the first LED to the light valve by positioning the mirror element in a manner to reflect the light from the first LED towards the light valve and the mirror wheel is configured to optically couple the second LED to the light valve by positioning the transparent portion in a manner to transmit light from the second LED towards the light valve.
15. The system of claim 11 , wherein the mirror wheel is arranged relative to the first and second LED such that light from the first LED is incident upon the first surface of the mirror wheel and the light from the second LED is incident upon the second surface of the mirror wheel.
16. The system of claim 11 , wherein the mirror wheel is configured to optically couple the first LED to the light valve by positioning the mirror element in a manner to reflect the light from the first LED towards the light valve and the mirror wheel is configured to optically couple the second LED to the light valve by positioning the transparent portion in a manner to transmit light from the second LED towards the light valve.
17. The system of claim 11 , wherein the controller is further coupled to the mirror assembly and the plurality of light sources and configured to activate the plurality of light sources to emit light in coordination with operation of the mirror assembly.