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Light source device and projection display apparatus

一种光源装置、光源单元的技术，应用在放映装置、光学、摄影等方向，能够解决光合成部大型化、散热器冷却性能降低、光源破损等问题，达到高亮度化小型化的效果

Active Publication Date: 2019-12-03
PANASONIC INTPROP MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the distance between the light sources is reduced, the cooling performance of the heat sink will decrease, the heat dissipation of the light source will be insufficient, and the light source may be damaged.
In addition, in the light synthesis method using reflectors such as mirrors, only light from two directions can be combined with one reflector, so the size of the light synthesis unit will increase.

Method used

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  • Light source device and projection display apparatus
  • Light source device and projection display apparatus
  • Light source device and projection display apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0071] Below, use Figure 1 to Figure 6 , Embodiment 1 will be described. Hereinafter, a projector will be described as a specific embodiment of the projection-type image display device according to the present disclosure.

[0072] [1-1. Structure]

[0073] [1-1-1. Structure of Projector]

[0074] figure 1 It is a figure showing the structure of the projector concerning Embodiment 1. The projector 1 includes a light source device 11 , an illumination optical system 20 , an image generation unit 30 , and a projection optical system 40 . In addition, in figure 1 The XYZ orthogonal coordinate system is shown in the figure 2 The same XYZ rectangular coordinate system is appropriately shown in the subsequent drawings as well.

[0075] The projector 1 guides the light emitted from the light source device 11 to the image generation unit 30 through the illumination optical system 20, and uses a digital micromirror device (Digital Micromirror Device) (hereinafter, referred to a...

Embodiment approach 2

[0100] Below, use Figure 7 ~ Figure 9 Embodiment 2 will be described. In Embodiment 2, the same reference numerals are assigned to the same components as in Embodiment 1, and repeated description thereof will be omitted.

[0101] exist Figure 7 The configuration of the light source device 12 according to Embodiment 2 is shown in . In the light source device 12 , the first light source unit 100A and the second light source unit 100B are disposed facing the X direction with the polarizing beam splitter 110 interposed therebetween. The arrangement is shifted by half the pitch between the light source elements. In addition, the phase difference plate 130 is disposed near the emission port of the light source device 12 .

[0102] exist Figure 8 The structure of the phase difference plate 130 is shown in . Figure 8 (a) is the main view, Figure 8 (b) is a side view. The retardation film 130 has an opening area 131 (an area to which a grid is applied) and a non-opening ar...

Embodiment approach 3

[0106] Below, use Figure 10 ~ Figure 12 Embodiment 3 will be described. exist Figure 10 The configuration of the light source device 13 according to Embodiment 3 is shown in . The light source device 13 is composed of a first light source unit 100A, a second light source unit 100B, a third light source unit 100C, a fourth light source unit 100D, a first polarizing beam splitter 110A, a second polarizing beam splitter 110B, collimating lenses 140, 150 and a polarization conversion element 160.

[0107] The respective structures of the first light source unit 100A to the fourth light source unit 100D and Figure 4 The light source unit 100 shown is the same. The first light source unit 100A and the second light source unit 100B are arranged to face each other with the first polarizing beam splitter 110A disposed therebetween so that the optical axes in the X direction of the emitted light from each light source element are aligned, and the third The light source unit 100C...

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Abstract

The present disclosure provides a light source device and a projection display apparatus that suitably combine light fluxes from a plurality of light source units, thereby achieving high intensity anddownsizing. A light source device includes first and second light source units, a first polarization beam splitter, and a polarization conversion element. The first light source unit emits first linear polarization light in a first direction. The second light source unit is disposed facing the first light source unit, and emits the first linear polarization light in a second direction opposite tothe first direction. The first linear polarization light emitted from the first light source unit is reflected by the first polarization beam splitter in a third direction perpendicular to the firstand second directions. The first linear polarization light emitted from the second light source unit is reflected by the first polarization beam splitter in a fourth direction opposite to the third direction, is converted into the second linear polarization light by the polarization conversion element, and is reflected in the third direction.

Description

technical field [0001] The present disclosure relates to a light source device that combines and emits light beams from a plurality of light source arrays (light source units), and a projection-type image display device using the light source device. Background technique [0002] For projectors, miniaturization is desired, and for miniaturization, it is conceivable to reduce the size of the optical system in the subsequent stage by reducing the distance between light sources to reduce the beam diameter, and to combine light from multiple light sources to save space. However, if the distance between the light sources is reduced, the cooling performance of the heat sink is reduced, the heat dissipation of the light sources is insufficient, and the light sources may be damaged. In addition, in the light synthesis method using a reflector such as a mirror, only light from two directions can be synthesized with one reflector, and thus the size of the light synthesis unit is incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20
CPCG03B21/2013G03B21/2073G02B26/008G02B27/283G02B27/286G03B21/204G03B33/08
Inventor 大谷创右
Owner PANASONIC INTPROP MANAGEMENT CO LTD
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