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Light source unit and projector having the same light source unit

A light source device, fluorescent technology, applied in the field of projection device, light source device

Active Publication Date: 2017-12-29
CASIO COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the size of the light diffusion element is increased, and the light source device and the projection device are sometimes also increased in size.

Method used

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  • Light source unit and projector having the same light source unit
  • Light source unit and projector having the same light source unit
  • Light source unit and projector having the same light source unit

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0021] Hereinafter, a first embodiment of the present invention will be described based on the drawings. figure 1 It is an external perspective view of the projection device 10 . In addition, in this embodiment, the left and right of the projection device 10 represent the left and right directions with respect to the projection direction, and the front and rear represent the front and rear directions with respect to the screen side direction of the projection device 10 and the traveling direction of the light beam.

[0022] And, if figure 1 As shown, the box body of the projection device 10 is roughly in the shape of a cuboid, and is formed by side panels, an upper panel 11, and a lower panel 16, wherein the side panels are composed of a front panel 12, a back panel 13, a left side panel 14, and a right side panel 15. . The projection device 10 has a projection unit 19 on the left side of the front panel 12 . In addition, a plurality of intake and exhaust holes 17 are provi...

no. 2 approach

[0065] Next, based on Figure 7 A second embodiment of the present invention will be described. Figure 7 Based on the projection device 10 of the first embodiment, the projection device 10A changes the position of the rotating mirror device 270 on the optical path on the exit side of the microlens array 171, and on the incident side of the microlens array 171 A rotating mirror device 270 is arranged on the optical path. In addition, in the following description, the same code|symbol is attached|subjected to the same member and part as 1st Embodiment, and the description is simplified or abbreviate|omitted.

[0066] Furthermore, in the light guide optical system 140 of the projection device 10A in this embodiment, a first dichroic mirror 141A is arranged instead of the first dichroic mirror 141 . The first dichroic mirror 141A is disposed at a position where the optical axis of the blue-band light emitted from the blue light source device 300 and the red-band light emitted f...

no. 3 approach

[0072] Next, a third embodiment of the present invention will be described based on FIG. 8 . In this embodiment, the rotating mirror device 270 in the first embodiment and the second embodiment is modified, as follows Figure 8A , Figure 8B As shown, a rotating mirror device 270A having a tilted mirror 271A is employed. That is, the mirror surface 271Aa of the mirror 271A of the rotating mirror device 270 is inclined at an angle (90°−θ) with respect to the axis of the rotation shaft 275 a of the motor 275 . That is, the mirror surface 271Aa of the mirror lens 271A is inclined at a predetermined angle θ with respect to the rear surface 271b which is a surface perpendicular to the rotation shaft 275a of the motor 275 . The angle θ is preferably 0.1° to 0.2°. In addition, mirror surface 271Aa of lens 271A in this embodiment is formed in a fine wave shape with a concave-convex cross section, similarly to lens 271 in the first and second embodiments. In addition, the same part...

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PUM

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Abstract

There is provided a light source unit including a semiconductor light emitting device, and a rotary mirror device having a mirror surface on a first side, and a second side to which a rotational shaft of a motor is connected, wherein the mirror surface has an undulating section shape of convex and concave shape portions, wherein the rotary mirror device is disposed so as to reflect light emitted from the semiconductor light emitting device on the mirror surface.

Description

technical field [0001] The present invention relates to a light source device and a projection device having the same. Background technique [0002] Currently, data projectors are widely used as image projection devices that project screens of personal computers, video images, and images based on image data stored in memory cards or the like on a screen. This projector condenses light emitted from a light source on a micromirror display element called a DMD (Digital Micromirror Device) or a liquid crystal panel to display a color image on a screen. [0003] Moreover, with the popularization of video equipment such as personal computers and DVD players, projectors, which are projection devices, have expanded from business presentations to home use. In such projectors, a high-intensity discharge lamp is currently the mainstream as a light source, but in recent years, various projection devices have been developed that use semiconductor light-emitting elements such as a plural...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20
CPCG03B21/204G03B21/2066G02B5/0215G02B5/0284G02B27/48F21V14/04F21Y2115/10G03B21/208F21V7/0025F21V7/048G03B21/2033G02B17/0663G02B26/0816
Inventor 黑崎秀将
Owner CASIO COMPUTER CO LTD