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Projection device

A technology of a projection device and a light source device, which is applied to projection devices, optics, instruments, etc., can solve the problem that it is difficult to reduce the size of liquid crystal projectors.

Pending Publication Date: 2022-04-22
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this structure, there is a problem that it is difficult to reduce the size of the liquid crystal projector in the front-rear direction

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0030] Next, a first embodiment of the present invention will be described with reference to the drawings.

[0031] [Outline structure of projector]

[0032] figure 1 and figure 2 It is a perspective view showing the appearance of projector 1A of this embodiment. figure 1 It is a perspective view of projector 1A viewed from the front side, figure 2 It is a perspective view of the projector 1A viewed from the rear side.

[0033] Projector 1A of the present embodiment is a projection device that modulates light emitted from a light source, generates an image corresponding to image information, and projects the generated image onto a projected surface such as a screen. Such as figure 1 and figure 2 As shown, projector 1A has exterior casing 2A.

[0034] [Structure of the exterior case]

[0035] The exterior case 2A constitutes the exterior of the projector 1A, and houses a control device 3 , a power supply device 4 , a cooling device 5A, an image projection device 6A, ...

no. 2 Embodiment approach

[0256] Next, a second embodiment of the present invention will be described.

[0257] The projector of the present embodiment has the same structure as the projector 1A of the first embodiment, but the position of the inlet provided in the exterior case is different, and the structure of the cooling device is also different. In addition, in the following description, the same code|symbol is attached|subjected to the part which is the same or substantially the same as what has already been demonstrated, and description is abbreviate|omitted.

[0258] Figure 15 It is a plan view showing the internal structure of projector 1G according to this embodiment. in particular, Figure 15 It is a figure which looked at the internal structure of the exterior case 2G in the projector 1G from +Y direction. In addition, in Figure 15 In , the illustration of the heat pipe 7024 is omitted.

[0259] The projector 1G of this embodiment corresponds to a projection device. Such as Figure...

no. 3 Embodiment approach

[0281] Next, a third embodiment of the present invention will be described.

[0282] The projector of this embodiment has the same configuration as the projector 1A of the first embodiment, that is, the projector 1A having the image projection device 6A, but differs from the projector 1A in that the cooling gas is introduced into the exterior case. The inlet of the inlet is provided on the bottom surface of the outer case. In addition, in the following description, the same code|symbol is attached|subjected to the part which is the same or substantially the same as what has already been demonstrated, and description is abbreviate|omitted.

[0283] Figure 16 It is a perspective view showing the appearance of the projector 1H of this embodiment. In detail, Figure 16 It is a perspective view showing the projector 1H viewed from the bottom surface 22H side. Figure 17 It is a diagram observing the internal structure of the projector 1H from the +Y direction, Figure 18 It i...

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PUM

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Abstract

And a projection device. And miniaturization can be realized. A projection device includes: a projection optical device having an incident light path on which image light is incident and a passing light path bent from the incident light path; an image generation device that causes the image light to be incident on the incident light path; a light source device that supplies illumination light to the image generation device; and a first device disposed on the opposite side from the light source device with respect to the projection optical device, the first device being at least one of a control device and a power supply device.

Description

technical field [0001] The invention relates to projection devices. Background technique [0002] Conventionally, there is known a projector that modulates light emitted from a light source device and projects the modulated light. As such a projector, a liquid crystal projector including a light source unit, an optical unit, a projection lens, and a power supply unit is known (for example, refer to Patent Document 1). [0003] In the liquid crystal projector described in Patent Document 1, the projection lens is provided substantially at the center in the left-right direction of the liquid crystal projector. The optical unit is disposed on the rear side of the liquid crystal projector with respect to the projection lens, and modulates illumination light incident from the light source unit. The light source unit is arranged in a direction perpendicular to the direction in which the projection lens and the optical unit are arranged, and emits illumination light to the optica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/14G03B21/16G03B21/20
CPCG03B21/145G03B21/16G03B21/204G03B21/2073G03B21/2066G03B21/26G03B21/2033G03B21/142
Inventor 大月伸行座光寺诚田中克典
Owner SEIKO EPSON CORP