Optical device and projector
AssigneeSeiko Epson Corporation
InventorsKensaku MATSUMOTO, Kaname NAGATANI
Life of this patent
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Abstract
An optical device includes a light modulation device disposed on an optical axis of incident light, and a holding section configured to hold the light modulation device. The holding section includes an inflow part to which a liquid supplied from an outside of the holding section inflows, a flow channel forming part disposed along a circumferential edge of the light modulation device so as to have an annular shape, and having a flow channel through which the liquid flowed from the inflow part circulates, and an outflow part from which the liquid having flowed through the flow channel outflows to the outside of the holding section. At least one of an inside of the inflow part and an inside of the flow channel is provided with at least one projection.
Claims9
A projector comprising:
- a light source configured to emit light;
- a light modulator configured to modulate light emitted from the light source in accordance with image information;
- and
- a holder holding the light modulator,
- wherein the holder includes
- an inflow part to which liquid inflows,
- an opening on which the light emitted from the light source is incident along an optical axis,
- a flow channel arranged along a periphery of the opening, the flow channel through which the liquid flowed from the inflow part circulates,
- an outflow part from which the liquid flowed through the flow channel outflows, and
- a narrowed part configured to partially narrow the flow channel,
- wherein the flow channel includes
- a first flow channel part extending in a first direction, the first flow channel part connected to the inflow part,
- a second flow channel part extending in a second direction crossing the first direction, the second flow channel part connected to the inflow part,
- a third flow channel part extending in the second direction, the third flow channel part connected to the first flow channel part, and
- a fourth flow channel part extending in a third direction opposite to the first direction, the fourth flow channel part connected to the third flow channel part, and
- wherein the narrowed part is provided with the second flow channel part.
Dependencies are inferred from the claim text.