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Laser light source device, display device, scanning type display device and projector

A laser light source and laser technology, applied in the field of projectors, can solve the problems of misuse of the laser light source part, increase in manufacturing cost, change in resonance state, etc., and achieve the effect of avoiding increase in manufacturing cost and performance degradation

Inactive Publication Date: 2008-12-03
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, safety devices such as interlock mechanisms provided on laser devices are only provided for the purpose of preventing accidents caused by careless use.
Therefore, with such a safety device, it is impossible to prevent the situation where the laser resonator part is taken out intentionally from the housing of the laser device and the laser resonator is transferred to other purposes.
[0006] Furthermore, the technique described in the aforementioned Patent Document 1 destroys the resonance structure of the laser by taking out the laser resonator from the case, so it is performed in a laser that is difficult to mechanically destroy the laser resonator like a semiconductor laser. application is practically difficult, and also leads to an increase in manufacturing cost, etc.
[0007] In addition, since the technology described in the above-mentioned Patent Document 1 has a structure in which the scope is bonded to the case, there is a possibility that the resonance state may change due to environmental changes such as temperature and deviation of the scope.
In addition, in the structure of destroying the scanning mirror in the technology described in the aforementioned Patent Document 1, even if the scanning mirror is destroyed, there is a risk of misuse of the laser light source unit.

Method used

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  • Laser light source device, display device, scanning type display device and projector
  • Laser light source device, display device, scanning type display device and projector
  • Laser light source device, display device, scanning type display device and projector

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0046] figure 1 , is a schematic cross-sectional view showing an example of the laser light source device according to the first embodiment of the present invention. The laser light source device 1 of the present embodiment is a device constituting a light source of, for example, a display device, an optical communication device, an audio device, an information processing device, and the like. The laser light source device 1 includes a laser light source unit 10 , a case 16 (support unit), a screw 17 (fixing member), and an adhesive 18 (disconnecting means, cutting member). Furthermore, the laser light source unit 10 is configured by including a substrate 11 , an optical oscillation unit 12 , bonding wires 13 , an anode electrode 14 , and a cathode electrode 15 .

[0047] The substrate 11 is a plate-shaped member made of an insulator such as a semiconductor or glass. A circuit for driving and controlling the optical oscillator 12 or other circuits, wiring, and the like may b...

no. 2 Embodiment approach

[0057] figure 2 , is a schematic cross-sectional view showing an example of the laser light source device according to the second embodiment of the present invention. exist figure 2 in, right with figure 1 Where the constituent elements are the same, the same symbols are added. The difference between the laser light source device 2 of the present embodiment and the laser light source device 1 of the first embodiment is the fixing portion 21 and the hook 22 .

[0058] The fixing part 21 (fixing member) can have the same figure 1 The threaded part 17 has the same function. The fact that the case 16 is provided with the threaded hole 16a, that the substrate 11 is provided with the through-hole 11a, and that the fixing portion 21 is inserted into the threaded hole 16a through the through-hole 11a is also related to figure 1 same. That is, the fixing part 21 has a function of fixing the laser light source part 10 to the case 16 (supporting part) through a portion of the sub...

no. 3 Embodiment approach

[0062] 3 is a schematic perspective view showing an example of a laser light source device according to a third embodiment of the present invention. In Figure 3, pairs with figure 1 Where the constituent elements are the same, the same symbols are added. The difference between the laser light source device 3 of the present embodiment and the laser light source device 1 of the first embodiment is the fixing part 31 and the cutting part 32 . A through hole 33 is formed in the cut portion 32 .

[0063] The fixing part 31 (fixing member) can have the same figure 1 The threaded part 17 has the same function. The fact that the case 16 is provided with the threaded hole 16a, that the substrate 11 is provided with the through-hole 11a, and that the fixing portion 21 is inserted into the threaded hole 16a through the through-hole 11a is also related to figure 1 same. That is, the fixing part 31 has a function of fixing the laser light source part 10 to the case 16 (supporting part...

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PUM

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Abstract

The invention provides a laser light-source arrangement which can be firmly non-luminous, a display device, a scanning display assembly and a projector when the laser is uninstalled from the container, which is characterized in that it includes a laser source component (10) of the oscillating component (12) which can vibrate the light, a built-in fitment which can fix the laser source component and an open circuit unit which can broke circuit of the current passage which can supply the current for the oscillating component (12) of the laser source component (10) by linking the movement that laser source component (10) is uninstalled from the said built-in fitment.

Description

technical field [0001] The present invention relates to a laser light source device, a display device, a scanning display device and a projector. Background technique [0002] In recent years, the demand for miniaturization of projectors has been increasing, and with the increase in output of semiconductor lasers and the appearance of blue semiconductor lasers, research has been conducted on projectors and displays using laser light sources. Since the wavelength range of the light source is narrow, the color reproduction range can be made very wide, and since they can be miniaturized and their constituent elements can be reduced, they have great potential as next-generation display elements. [0003] However, if the laser light source emits light with the safety device removed, it will cause damage to the human body, especially the eyes. In addition, it is considered that a laser light source provided in a display device or the like is taken out and misused in a weapon or t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S5/00H01S5/022H01S3/00G09F9/00H04N5/74G03B21/00
Inventor 武田高司神宫启至
Owner SEIKO EPSON CORP