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Light source device and projector

A technology of a light source device and a light source unit, which is applied to projection devices, lighting devices, components of lighting devices, etc., and can solve problems such as difficulty in obtaining light quantity and increasing the light quantity of excitation light

Active Publication Date: 2012-05-30
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, even if a light source such as the above-mentioned Patent Document 1 is used, it is difficult to obtain the expected light quantity by increasing the light quantity of the excitation light in order to obtain strong light.

Method used

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  • Light source device and projector
  • Light source device and projector

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no. 1 Embodiment approach

[0052] Below, while referring to Figure 1 to Figure 13 , the light source device and the projector according to the first embodiment of the present invention will be described. In addition, in all the drawings below, in order to make the drawings easier to see, the dimensions and / or ratios of the components are appropriately different.

[0053] figure 1 It is a schematic diagram showing the light source device 100 and the projector PJ of the present embodiment. The projector PJ as shown in the drawing includes a light source device 100 , a color separation optical system 200 , a liquid crystal light valve (light modulation element) 400R, a liquid crystal light valve 400G, a liquid crystal light valve 400B, a color combining element 500 , and a projection optical system 600 .

[0054] The projector PJ operates as follows when summarized. The light emitted from the light source device 100 is separated into a plurality of color lights by the color separation optical system 20...

no. 2 Embodiment approach

[0143] Figure 14 It is an explanatory diagram of the light source device according to the second embodiment of the present invention. In the following description, the same reference numerals are attached to the same components as those of the first embodiment, and detailed descriptions are omitted.

[0144] as shown in Figure 14 Basically, the configuration of the light source device 104 is partially the same as that of the light source device 100 of the first embodiment. The difference is that the lens integrators are not paired and only one first lens array 32 is used. In the present embodiment, the superimposing optical system 50 functions as the condensing optical system of the present invention.

[0145] Figure 15 It is an explanatory diagram showing the functions of the first lens array 32 and the superimposing optical system 50 . exist Figure 15 In the above, for simplicity, the overlapping optical system 50 is schematically illustrated as one convex lens. T...

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Abstract

A light source device includes a light source section adapted to emit excitation light, a lens array adapted to divide the excitation light into a plurality of partial light beams, a light collection optical system adapted to collect the excitation light divided into the plurality of partial light beams, and a light emitting element adapted to emit fluorescence by being excited by the excitation light.

Description

technical field [0001] The invention relates to a light source device and a projector. Background technique [0002] In the prior art, in a projector, a discharge lamp such as an ultra-high pressure mercury lamp is generally used as a light source. However, such a discharge lamp has problems such as a relatively short life, difficulty in instantaneous lighting, and deterioration of liquid crystal light valves due to ultraviolet radiation emitted from the lamp. Therefore, a projector using a light source in place of the discharge lamp has been proposed. [0003] For example, in a projector proposed in Patent Document 1, a light source is used that makes excitation light incident on a phosphor from the outside and emits the resulting emitted light (fluorescence). Specifically, in Patent Document 1, the following light source is proposed as a light source: the sum of the end face areas of the phosphor in the visible light emission direction is set to be smaller than the sum o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20G03B21/14G03B21/00F21V5/04
CPCH04N9/3161G03B21/204G03B21/2066G03B21/208G02B13/22H04N9/3158G03B33/06G03B21/14G02B27/48G02B27/102H04N9/3164G02F1/1335G03B21/20H04N5/74
Inventor 秋山光一
Owner SEIKO EPSON CORP
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