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Projection device

A technology of projection device and light source device, which is applied in the direction of projection device, instrument, color TV parts, etc., and can solve the problem that the depth direction of the projector is easy to increase, etc.

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

However, in the case of using a large light source with a large depth direction, the depth direction of the projector tends to increase.

Method used

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Experimental program
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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 with 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 with 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 accommodates a control device 3 , a power supply device 4 , a cooling device 5A, an image projection dev...

no. 2 Embodiment approach

[0238] Next, a second embodiment of the present invention will be described.

[0239] The projector of this embodiment has the same configuration as the projector 1A of the first embodiment, but the configuration of the image generating device is 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.

[0240] Figure 11 It is a schematic diagram showing the configuration of the image projection device 6B included in the projector 1B of the present embodiment.

[0241] The projector 1B of this embodiment corresponds to a projection device. Instead of the image projection device 6, the projector 1B has Figure 11 The illustrated image projection device 6B has the same configuration and functions as those of the projector 1A of the first embodiment except for these points.

[0242] Such as Figure 11 A...

no. 3 Embodiment approach

[0258] Next, a third embodiment of the present invention will be described.

[0259] 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.

[0260] Figure 12 It is a plan view showing the internal structure of the projector 1C according to the present embodiment. in particular, Figure 12 It is a figure which looked at the internal structure of the exterior case 2C in 1 C of projectors from +Y direction. In addition, in Figure 12 In , the illustration of the heat pipe 7024 is omitted. The projector 1C of this embodiment corresponds to a projection device. Such as Figu...

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Abstract

And a projection device. And miniaturization can be realized. The projection device includes: a light source device that emits light from an exit port; a first reflective optical element that reflects at least a portion of the light emitted from the light source device; a second reflective optical element disposed on an optical path of the light reflected by the first reflective optical element; and a projection optical device disposed on the optical axis of the light emitted from the second reflective optical element, the projection optical device having: an incident light path on which the light emitted from the second reflective optical element is incident; a bending member that bends the traveling direction of the light that has passed through the incident light path; and a pass-through optical path through which the light emitted from the bending member passes, the extension line of the light emission optical axis of the light source device does not coincide with the extension line of the optical axis of the incident optical path, and intersects with the extension line including the optical axis of the pass-through optical path.

Description

technical field [0001] The invention relates to projection devices. Background technique [0002] Conventionally, there is known a projector including a light source, a light modulation device for modulating light emitted from the light source, and a projection optical device for projecting the light modulated by the light modulation device (for example, refer to Patent Documents 1 and 2). . [0003] In the projector (projection display device) described in Patent Document 1, after the mirror changes the traveling direction of light emitted from the light source by approximately 90°, the light reflected by the mirror is irradiated to the video display element. The optical image modulated by the image display element enters the reflective optical system through the transmission optical system including the front lens group and the rear lens group, and is reflected by the reflective optical system to form an image on the workbench. [0004] In addition, as another example, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20G03B21/16
CPCG03B21/2066G03B21/16G03B21/204H04N9/3105H04N9/3144H04N9/3158G02B27/1006G03B21/28G03B21/2013H04N9/3164H04N9/3161
Inventor 大月伸行座光寺诚田中克典
Owner SEIKO EPSON CORP
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