Projection display apparatus and projection method for projection display apparatus
AssigneeNEC Display Solutions, Ltd.
InventorShinichiro CHIKAHISA
Life of this patent
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Abstract
A projection display apparatus that can prevent deviation in the light quantity distribution of the projected image is provided. A projection display apparatus includes: a light source unit including a light emitting element; an image light generator modulating light from the light source unit to emit image light; a projecting unit projecting the image light; a polarization modulator on which the image light is made incident and that emits light in a particular polarization state; and a depolarizer arranged on the optical path between the light emitting element and the polarization modulator.
Claims10
A projection display apparatus comprising:
- a light source unit including a light emitting element;
- an image light generator that modulates light from the light source unit to emit image light;
- a projecting unit that projects the image light;
- a polarization modulator on which the image light is made incident and that emits light in a particular polarization state;
- and,
- a depolarizer that is arranged on an optical path between the light emitting element and the polarization modulator.
A projection display method for a projection display apparatus, comprising:
- eliminating polarization of image light generated by light from a light source unit;
- and
- emitting the image light with respect to which polarization was eliminated as light in a particular polarized state.
Dependencies are inferred from the claim text.