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Light source unit and projector

一种光源单元、光源装置的技术，应用在投影仪领域，能够解决劣化、发光效率降低、激励光照射位置稀少等问题，达到防止劣化的不均匀、长期维持性能的效果

Active Publication Date: 2011-05-11
CASIO COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, the irradiation position of the excitation light in the layer of the phosphor is rare, and the part that is repeatedly irradiated and the part that is hardly irradiated, etc., thereby promoting the deterioration of only a part of the layer of the phosphor, causing the luminous efficiency of this part to decrease, Causes problems such as flickering of the picture reflected on the screen

Method used

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  • Light source unit and projector
  • Light source unit and projector
  • Light source unit and projector

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Embodiment Construction

[0032] Next, preferred modes for implementing the present invention will be described with reference to the drawings. In the embodiments described below, various preferable technical limitations for implementing the present invention are provided, but the following embodiments and illustrations do not limit the scope of the invention.

[0033] Next, modes for implementing the present invention will be described. The projector 10 includes: a light source unit 60, a display element 51, a light guide optical system 170 for guiding light from the light source unit 60 to the display element 51, and a light guide system 170 for projecting an image emitted from the display element 51 onto a screen. A projection-side optical system 220 , and a projector control unit for controlling the light source unit 60 and the display element 51 .

[0034]Further, the light source unit 60 includes an excitation light irradiation device 70 , a fluorescent light emitting device 100 having a fluores...

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PUM

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Abstract

To provide a light source unit which prevents a reduction of light emitting efficiency in a luminescent material layer and a projector; a projector includes a light source unit, a display device and a projector control device; the light source unit includes an excitation light shining device, a luminescent wheel on which a luminescent material layer is laid circumferentially which receives the excitation light to emit luminescent light of a predetermined wavelength band, two types of light source devices for emitting light rays of wavelength bands which are different from the predetermined wavelength band, and a light source control device for controlling individually the emission of light by the excitation light shining device and the two types of light source devices and for controlling the rotating speed of the luminescent wheel to make the rotation number of the wheel a integer, in accordance with a period of time when the excitation light shining device is turned on.

Description

[0001] The present invention is based on a Japanese patent application with an application date of October 28, 2009 and an application number of 2009-247708, claiming the priority of the earlier application. This application includes the description, claims, drawings and Summary. field of invention [0002] The present invention relates to a light source unit and a projector including the light source unit. Background technique [0003] Data projectors are now widely used as image projection devices that project screens or video images based on personal computers, images of image data stored in memory cards, etc., onto a screen. This projector condenses light emitted from a light source onto a micromirror display element called a DMD (Digital Micromirror Device) or a liquid crystal panel, and displays a color image on a screen. [0004] Among such projectors, in the prior art, projectors that use high-intensity discharge lamps as light sources are the mainstream, but since ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20G03B21/14F21V14/00
CPCG03B21/2013G03B21/204G03B21/2053G03B33/08G03B21/206
Inventor 柴崎卫
Owner CASIO COMPUTER CO LTD