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Optical device, light source device, and projector

A technology for optical devices and light source devices, applied in optics, projection devices, instruments, etc., can solve the problems of increased noise, difficulty in making full use of heat sinks, faster fin rotation speed, and larger heat sinks, and achieves lightweight. Effect

Active Publication Date: 2017-07-28
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the technique disclosed in Patent Document 1, the fins of the heat sink protrude long toward the side opposite to the phosphor plate, and there is a problem of increasing the size of the device.
[0008] In addition, it is also conceivable that it is difficult for the heat sink described in Patent Document 2 to fully utilize the flow of air generated by the rotation, resulting in an increase in the number of rotations of the fins and an increase in the size of the heat sink.
There is such a problem: when the rotation speed of the heat sink is increased, the noise will increase due to frictional wind noise, and when the heat sink is enlarged, the size and weight of the light source device will increase.

Method used

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  • Optical device, light source device, and projector
  • Optical device, light source device, and projector
  • Optical device, light source device, and projector

Examples

Experimental program
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Embodiment Construction

[0049] Hereinafter, a projector according to this embodiment will be described with reference to the drawings.

[0050] [Outline structure of projector]

[0051] figure 1 It is a schematic diagram showing the structure of the projector 1 of this embodiment.

[0052] Projector 1 according to the present embodiment is a display device that modulates light emitted from illuminating device 31 provided inside to form an image corresponding to image information, and projects the image in an enlarged manner onto screen SC serving as a projection surface.

[0053] Such as figure 1 As shown, the projector 1 has an exterior case 2 and an optical unit 3 accommodated in the exterior case 2 . In addition, although not shown, the projector 1 further includes a control device for controlling the projector 1 , a cooling device for cooling objects to be cooled such as optical components, and a power supply device for supplying electric power to electronic components.

[0054] [Structure of...

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PUM

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Abstract

An optical device, a light source device, and a projector are provided. The optical device capable of inhibiting optical element degradation and achieving long service lifetime is provided, and includes a reflecting plate (4A1) and a rotation member (6) that dissipates the heat of the reflecting plate (4A1). The rotation member (6) includes a base portion (61) placed on the reflecting plate (4A1) and a plurality of blade portions (62) that project to the side opposite to the base portion (61). The plurality of blade portions (62) each includes an inclined portion (62a) that is inclined with respect to the base portion (61).

Description

technical field [0001] The present invention relates to an optical device, a light source device and a projector. Background technique [0002] Conventionally, there is known a projector that modulates light emitted from a light source based on image information, and projects an image onto a projection surface such as a screen. Since an optical element in a projector generates heat due to light from a light source, techniques for cooling the optical element have been proposed (for example, refer to Patent Document 1 and Patent Document 2). [0003] Patent Document 1 describes a light source device including an excitation light source unit that emits excitation light and a fluorescent light emitting unit. The fluorescent light emitting unit has a phosphor plate having a phosphor layer, a substrate on which the phosphor plate is placed, and a heat sink. The phosphor plate is irradiated with excitation light emitted from the excitation light source unit, and emits fluorescenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/16
CPCG03B21/16
Inventor 青木繁和
Owner SEIKO EPSON CORP
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