Optical device and display apparatus
An optical device combines light emitted from first and second display panels. The first display panel emits first color light from a plurality of pixels. The second display panel emits second color light having a different wavelength range from the first color light from a plurality of pixels and emits third color light having a different wavelength range from the second color light from a plurality of pixels.
1. An optical device comprising:
a first display panel having a plurality of first pixels on a first substrate, each including a first light-emitting element, wherein the first display panel emits first color light from each of the plurality of first pixels;
a second display panel having a plurality of second pixels on a second substrate that is separated from the first substrate, each including a second light-emitting element, and a plurality of third pixels, each including a third light-emitting element, wherein the second display panel emits second color light having a different wavelength range from the first color light from each of the plurality of second pixels and emits third color light having a different wavelength range from the first color light and the second color light from each of the plurality of third pixels; and
a combining optical system that combines the light emitted from the first display panel and the light emitted from the second display panel.
2. The optical device according to claim 1 , wherein the first light-emitting elements, the second light-emitting elements, and the third light-emitting elements are organic electroluminescent elements.
3. The optical device according to claim 2 , wherein the first color light has a shorter peak wavelength than the second color light and the third color light.
4. The optical device according to claim 2 , wherein the first light-emitting elements emit light via one of a singlet exciton and a triplet exciton, and the second light-emitting elements and the third light-emitting elements emit light via the other exciton.
5. The optical device according to claim 2 , wherein a difference in peak wavelength between the second color light and the third color light is smaller than a difference in peak wavelength between the first color light and the second color light and a difference in peak wavelength between the first color light and the third color light.
6. The optical device according to claim 1 , wherein the combining optical system includes a dichroic mirror that transmits the first color light and that reflects the second color light and the third color light.
7. The optical device according to claim 1 , wherein the combining optical system includes a dichroic mirror that reflects the first color light and that transmits the second color light and the third color light.
8. The optical device according to claim 1 , wherein the combining optical system includes a first dichroic mirror that reflects the first color light and that transmits the second color light and the third color light and a second dichroic mirror that transmits the first color light and that reflects the second color light and the third color light.
9. The optical device according to claim 1 , wherein the second pixels and the third pixels have a larger size than the first pixels.
10. A display apparatus comprising:
the optical device according to claim 1 ; and
a light guide system that guides the light output from the combining optical system and that outputs the light toward a surface of a viewer.
11. A display apparatus comprising:
the optical device according to claim 2 ; and
a light guide system that guides the light output from the combining optical system and that outputs the light toward a surface of a viewer.
12. A display apparatus comprising:
the optical device according to claim 3 ; and
a light guide system that guides the light output from the combining optical system and that outputs the light toward a surface of a viewer.
13. A display apparatus comprising:
the optical device according to claim 4 ; and
a light guide system that guides the light output from the combining optical system and that outputs the light toward a surface of a viewer.
14. A display apparatus comprising:
the optical device according to claim 5 ; and
a light guide system that guides the light output from the combining optical system and that outputs the light toward a surface of a viewer.
15. A display apparatus comprising:
the optical device according to claim 6 ; and
a light guide system that guides the light output from the combining optical system and that outputs the light toward a surface of a viewer.
16. A display apparatus comprising:
the optical device according to claim 7 ; and
a light guide system that guides the light output from the combining optical system and that outputs the light toward a surface of a viewer.
17. A display apparatus comprising:
the optical device according to claim 8 ; and
a light guide system that guides the light output from the combining optical system and that outputs the light toward a surface of a viewer.
18. A display apparatus comprising:
the optical device according to claim 9 ; and
a light guide system that guides the light output from the combining optical system and that outputs the light toward a surface of a viewer.
19. A display apparatus comprising:
the optical device according to claim 1 ; and
a projection optical system that projects the light output from the combining optical system.
20. A display apparatus comprising:
the optical device according to claim 2 ; and
a projection optical system that projects the light output from the combining optical system.