Wavelength selective phase difference element and projection display apparatus
AssigneeSony Group Corporation
InventorKEISUKE HOMMA
Life of this patent
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Abstract
A wavelength selective phase difference element according to an embodiment of the present disclosure includes: a light incident surface and a light output surface that are opposed to each other in a Z-axis direction when three axes including an X axis, a Y axis, and a Z axis are orthogonal to one another; a first member that has a multi-layer structure where a plurality of layers are stacked between the light incident surface and the light output surface; and a second member that is disposed on the light output surface of the first member and has an optical axis parallel to the Z-axis direction.
Claims15
A wavelength selective phase difference element comprising:
- a light incident surface and a light output surface that are opposed to each other in a Z-axis direction when three axes including an X axis, a Y axis, and a Z axis are orthogonal to one another;
- a first member that has a multi-layer structure where a plurality of layers are stacked between the light incident surface and the light output surface;
- and
- a second member that is disposed on the light output surface of the first member and has an optical axis parallel to the Z-axis direction.
A projection display apparatus comprising:
- one or a plurality of light sources that emits light beams of a plurality of wavelength bands different from one another;
- a wavelength selection element that transmits or reflects light having a predetermined wavelength component among the light beams emitted from the light source;
- a plurality of light modulation elements that modulates respective light beams of the plurality of wavelength bands;
- a color combining element that combines the respective light beams of the wavelength bands emitted from the plurality of modulation elements;
- a projection optical system that projects light emitted from the color combining element;
- and
- a wavelength selective phase difference element that is disposed on a light output side of the wavelength selection element, wherein
- the wavelength selective phase difference element includes
- a light incident surface and a light output surface that are opposed to each other in a Z-axis direction when three axes including an X axis, a Y axis, and a Z axis are orthogonal to one another,
- a first member that has a multi-layer structure where a plurality of layers are stacked between the light incident surface and the light output surface, and
- a second member that is disposed on the light output surface of the first member and has an optical axis parallel to the Z-axis direction.
Dependencies are inferred from the claim text.