Optical device and display
AssigneeSeiko Epson Corporation
InventorsShinichi Wakabayashi, Masatoshi Ito
Life of this patent
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Abstract
An optical device includes an optical member having an optical area on which light incidents, the optical area having a rectangular shape in a plan view, a first actuator configured to displace the optical member around a first axis which passes through the center of the optical area in the plan view, and which forms an angle smaller than 90° with a first side of the optical area, and a second actuator configured to displace the glass plate around a second axis which passes through the center of the optical area, and which is perpendicular to the first axis.
Claims7
An optical device comprising:
- an optical member having an optical area on which light incidents, the optical member having a shape with eight sides including four first sides and four second sides, the first sides being longer than the second sides, the optical area having a rectangular shape with four sides in a plan view, the four sides of the optical area being each parallel with a respective one of the four first sides of the optical member;
- a first actuator configured to displace the optical member around a first axis which passes through a center of the optical area in the plan view, the first axis forming an angle smaller than 90° with a first side of the optical area;
- and
- a second actuator configured to displace the optical member around a second axis which passes through the center of the optical area, the second axis being perpendicular to the first axis.
A display comprising:
- a light source;
- a first light modulator configured to modulate light emitted from the light source;
- an optical device including
- an optical member having an optical area on which light modulated by the first light modulator incidents, the optical area having a rectangular shape in a plan view of the optical member,
- a first actuator configured to displace the optical member around a first axis which passes through a center of the optical area in the plan view, the first axis forming an angle smaller than 90° with a first side of the optical area, and
- a second actuator configured to displace the optical member around a second axis which passes through the center of the optical area, the second axis being perpendicular to the first axis;
- an optical system configured to transmit light transmitted through the optical device;
- a fixation member which is made of metal, and which is configured to fix the light modulator;
- a spectral element configured to disperse the light emitted from the light source into a first colored light beam and a second colored light beam;
- a second light modulator that includes a second liquid crystal panel and corresponds to the second colored light beam;
- and
- a prism configured to combine the plurality of colored light beams modulated by the plurality of light modulators with each other, wherein
- the first actuator and the second actuator are disposed at positions where the first actuator and the second actuator do not overlap the fixation member in the plan view,
- the first light modulator includes a first liquid crystal panel and corresponds to the first colored light beam,
- the prism combines the first colored light beam modulated by the first light modulator and the second colored light beam modulated by the second light modulator with each other, and
- the fixation member fixes the prism and the first and second light modulators.
Dependencies are inferred from the claim text.