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Light source device and display device

A light source device and light source technology, applied in the direction of lighting devices, projection devices, components of lighting devices, etc., can solve the problems of increased number of parts, high manufacturing cost of light source device 10B, etc., and achieve the effect of miniaturization

Inactive Publication Date: 2016-04-27
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, compared with the light source device 10A using the transmissive diffuser plate 12, for the light source 10B using the reflective diffuser plate 17, the PBS 15 and the λ / 4 plate 16, which are more expensive optical systems, are newly required, resulting in an increase in the number of parts and the high manufacturing cost of the light source device 10B

Method used

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  • Light source device and display device
  • Light source device and display device
  • Light source device and display device

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Experimental program
Comparison scheme
Effect test

no. 3 approach

[0037] 3. Third Embodiment (Constitution of Diffusion Plate with Ranbashian Characteristics)

[0038] 4. Fourth embodiment (configuration with two LDs)

[0039] 5. Fifth Embodiment (Configuration to Rotate the Diffusion Plate (The Transmitting Area is in the Central Part of the Partially Transmitting Plate))

[0040] 6. Sixth Embodiment (Configuration to Rotate the Diffusion Plate (Transmitting Areas at Corner Parts of the Partially Transmitting Plate))

[0041] 7. Seventh Embodiment (Configuration for Partially Rotating the Diffusion Plate)

[0042] 8. Eighth Embodiment (Configuration of Rotating Diffuser Plate Having Ranbashian Characteristics)

[0043] 9. Ninth Embodiment (Constitution Using Fluorescent Material)

no. 1 approach

[0045] [1.1. Configuration of display device]

[0046] First, refer to figure 1 , a configuration example of the display device 1 including the light source unit 100 according to the first embodiment of the present disclosure will be described. figure 1 is a schematic configuration diagram showing a configuration example of a display device 1 including the light source unit 100 according to the present embodiment.

[0047] The display device 1 according to the present embodiment shows a configuration example of a projector for collecting light from a light source that emits light, emitting light from a projection lens through a device that produces an image display, and projecting an image on a display surface such as a screen S. . figure 1 The display device 1 shown in is a configuration example of a projector using three LCDs as a microdisplay.

[0048] The light emitted from the light source unit 100 passes through the integrated lens 2 composed of the first lens arra...

no. 2 approach

[0065] Next, based on Figure 6 and Figure 7 , illustrating the light source unit 200 according to the second embodiment. in addition, Figure 6 is a schematic configuration diagram showing the light source unit 200 according to the present embodiment. Figure 7 It is an explanatory diagram showing general scattered reflection by the diffuser plate 140 .

[0066] in accordance with figure 2 In the light source unit 100 of the first embodiment shown in , the opening portion 122 on which the incident light from the LD 110 is incident is formed close to the optical axis of the light source unit 100, and the light from the LD 110 that has passed through the partial transmission plate 120 is incident on the Diffusion plate 140. Then, the light reflected by the diffusion plate 140 is reflected by the partial transmission plate 120 again.

[0067] here, as Figure 7 As shown, as in the case of general specular reflection, the incident angle α (with respect to the angle perpe...

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Abstract

The present invention provides a light source device and a display device including the light source device, the light source device can be miniaturized without using expensive parts, wherein the light source device includes: at least one light source configured to emit light, configured to diffuse and a diffuser plate that reflects light emitted from the light source, and a partially transmissive member provided between the light source and the diffuser plate, the partially transmissive member having a transmissive area that allows light to pass through and capable of reflecting light and is except A reflective region outside the transmissive region.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Japanese Priority Patent Application JP2013-060364 filed on Mar. 22, 2013, the entire contents of which are incorporated herein by reference. technical field [0003] The present disclosure relates to a light source device for a display device such as a projector and a display device including such a light source device. Background technique [0004] From the viewpoint of brightness and cost performance, ultra-high pressure mercury lamps are mainly used as light sources for projectors, and on the other hand, solid-state light sources with long service life and wide color gamut have attracted attention from the viewpoint of long service life and additional high functions. people's attention. A solid-state light source is a light source that utilizes the luminescence phenomenon of a p-n junction of a semiconductor, such as an LED and a laser diode (LD). In recent years, for exampl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20G03B21/00F21V13/04
CPCG03B21/204G03B21/2066G03B21/208G03B21/28
Inventor 田尻真一郎
Owner SONY CORP