Projection device
A projection device includes a first dichroic mirror configured to transmit light of a first wavelength and reflect light of a second wavelength, a second dichroic mirror configured to transmit the light of the first wavelength and reflect light of a third wavelength, a first self-luminous display device configured to use the light of the first wavelength to emit first image light, a second self-luminous display device configured to use the light of the second wavelength to emit second image light, a third self-luminous display device including a plurality of third light-emitting elements configured to emit the light of the third wavelength, and a projection optical system configured to project, onto a projection target, image light obtained by being combined by the first dichroic mirror and the second dichroic mirror.
1 . A projection device comprising:
a first dichroic mirror configured to transmit light of a first wavelength and reflect light of a second wavelength;
a second dichroic mirror configured to transmit the light of the first wavelength and reflect light of a third wavelength;
a first self-luminous display device including a plurality of first light-emitting elements configured to emit the light of the first wavelength, the first self-luminous display device being configured to use the light of the first wavelength to emit first image light toward the first dichroic mirror and the second dichroic mirror;
a second self-luminous display device including a plurality of second light-emitting elements configured to emit the light of the second wavelength, the second self-luminous display device being configured to use the light of the second wavelength to emit second image light toward the first dichroic mirror;
a third self-luminous display device including a plurality of third light-emitting elements configured to emit the light of the third wavelength, the third self-luminous display device being configured to use the light of the third wavelength to emit third image light toward the second dichroic mirror; and
a projection optical system configured to project, onto a projection target, image light obtained by being combined by the first dichroic mirror and the second dichroic mirror, wherein
the first dichroic mirror includes;
a first glass plate having a first surface facing the projection optical system; and
a first light absorption portion disposed directly on an outer circumferential edge portion of the first surface, having a frame shape and configured to absorb peripheral light of the first image light and peripheral light of the second image light, and
the second dichroic mirror includes;
a second glass plate having a second surface facing the projection optical system; and
a second light absorption portion disposed directly on an outer circumferential edge portion of the second surface, having a frame shape and configured to absorb peripheral light of the first image light and peripheral light of the third image light.
2 . The projection device according to claim 1 , further comprising a power source unit configured to supply power to the first self-luminous display device, the second self-luminous display device, and the third self-luminous display device.
3 . The projection device according to claim 1 , wherein the first dichroic mirror and the second dichroic mirror cross each other.
4 . The projection device according to claim 1 , wherein the first dichroic mirror and the second dichroic mirror are disposed at positions separated from each other.
5 . The projection device according to claim 1 , wherein
each of the first self-luminous display device, the second self-luminous display device, and the third self-luminous display device includes a plurality of light-emitting elements arranged in a matrix, and
optical axes of a plurality of outer circumference side light-emitting elements, of the plurality of light-emitting elements, arranged in a frame shape on an outer circumference side are inclined toward an inner circumference side.
6 . The projection device according to claim 1 , further comprising a control unit configured to control the first self-luminous display device, the second self-luminous display device, and the third self-luminous display device, wherein
the control unit controls light emission intensity of each of the plurality of light-emitting elements in each of the first self-luminous display device, the second self-luminous display device, and the third self-luminous display device, and
light emission intensity of a plurality of outer circumference side light-emitting elements, of the plurality of light-emitting elements, arranged in a frame shape on an outer circumference side is greater than light emission intensity of a plurality of inner side light-emitting elements, of the plurality of light-emitting elements, arranged on an inner side of the plurality of outer circumference side light-emitting elements.
7 . The projection device according to claim 1 , comprising a plurality of angle limiting filters respectively disposed between the first self-luminous display device and the first dichroic mirror, between the second self-luminous display device and the first dichroic mirror, and between the third self-luminous display device and the second dichroic mirror, wherein
each of the first self-luminous display device, the second self-luminous display device, and the third self-luminous display device includes a plurality of light-emitting elements arranged in a matrix, and
the plurality of angle limiting filters reduce a light distribution angle of the image light emitted from each of the plurality of light-emitting elements.