Optical device and projector
AssigneeSeiko Epson Corporation
InventorsSatoshi Kinoshita, Makoto Zakoji
Life of this patent
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Abstract
An optical device includes: a light modulation element that modulates a luminous flux emitted from a light source; a casing that houses the light modulation element; a holding member that holds the light modulation element and exposes a part thereof to outside; a refrigerant housed in a housing space surrounded by the casing, the holding member and the light modulation element; and a convection start unit that is provided in the casing and causes convection of refrigerant.
Claims14
An optical device comprising:
- a light modulation element that modulates a luminous flux emitted from a light source;
- a casing that houses the light modulation element;
- a holding member that holds the light modulation element, the holding member having a part exposed to the outside;
- a refrigerant housed in a housing space surrounded by the casing, the holding member and the light modulation element;
- and
- a convection start unit that is provided in the casing, the convection start unit rotates about a rotation axis to cause convection of the refrigerant.
An optical device, comprising:
- a light modulation element that modulates a luminous flux emitted from a light source;
- a casing that houses the light modulation element;
- a holding member that holds the light modulation element, the holding member having a part exposed to the outside;
- a refrigerant housed in a housing space surrounded by the casing, the holding member and the light modulation element;
- and
- a convection start unit that is provided in the casing and causes convection of the refrigerant, the convection start unit having a driving unit that drives the convection start unit, the driving unit being provided outside of the casing.
An optical device for use with a light source that emits light, the optical device comprising:
- a light modulation element that modulates the light emitted from the light source;
- a casing;
- a holding member that holds the light modulation element;
- a cooling chamber surrounded by the casing, the holding member and the light modulation element;
- coolant disposed in the cooling chamber, and
- a convector provided in the casing and rotatable to cause convection of the coolant.
Dependencies are inferred from the claim text.