Liquid crystal projector and method for controlling liquid crystal projector
AssigneeSeiko Epson Corporation
InventorToru AOKI
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Abstract
A liquid crystal projector includes a red liquid crystal panel, a green liquid crystal panel, a blue liquid crystal panel, a green liquid crystal panel, an optical shift element configured to shift an emission optical path of a synthesized image of each liquid crystal panel, and a control circuit configured to control these. The control circuit controls the optical shift element to set a projection position to a projection position (A) in a subframe f1 and to a projection position (B) in a subframe f2. The control circuit causes a resolution of the liquid crystal panel expressed in the subframes f1 and f2 to be lower than the resolution of the liquid crystal panel expressed in the subframes f1 and f2.
Claims10
A liquid crystal projector comprising:
- a synthesizing unit including a first liquid crystal panel configured to generate a first modulated image of first color light, a second liquid crystal panel configured to generate a second modulated image of second color light having a wavelength shorter than that of the first color light, and a third liquid crystal panel configured to generate a third modulated image of third color light having a wavelength shorter than that of the second color light, and configured to synthesize the first modulated image, the second modulated image, and the third modulated image,
- an optical shift element configured to shift an emission optical path of a synthesized image by the synthesizing unit, and
- a control circuit configured to control the first liquid crystal panel, the second liquid crystal panel, the third liquid crystal panel, and the optical shift element, wherein
- the control circuit is configured to control the optical shift element to shift the emission optical path to a first position in a first period and to shift the emission optical path to a second position in a second period after the first period, and
- is configured to control the first liquid crystal panel, the second liquid crystal panel, the third liquid crystal panel, to cause a resolution of at least one of the first modulated image or the third modulated image expressed in the first period and the second period to be lower than a resolution of the second modulated image expressed in the first period and the second period.
A method for controlling a liquid crystal projector, the liquid crystal projector comprising:
- a synthesizing unit including a first liquid crystal panel configured to generate a first modulated image of first color light, a second liquid crystal panel configured to generate a second modulated image of second color light having a wavelength shorter than that of the first color light, and a third liquid crystal panel configured to generate a third modulated image of third color light having a wavelength shorter than that of the second color light, and configured to synthesize the first modulated image, the second modulated image, and the third modulated image, and
- an optical shift element configured to shift an emission optical path of a synthesized image by the synthesizing unit, the method comprising:
- controlling the optical shift element to shift the emission optical path to a first position in a first period and to shift the emission optical path to a second position in a second period after the first period, and
- controlling the first liquid crystal panel, the second liquid crystal panel, the third liquid crystal panel, to cause a resolution of at least one of the first modulated image or the third modulated image expressed in the first period and the second period to be lower than a resolution of the second modulated image expressed in the first period and the second period.
Dependencies are inferred from the claim text.