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Wavelength conversion laser and image display device

A technology of wavelength conversion and wavelength conversion components, which is applied in the direction of lasers, laser components, phonon exciters, etc., can solve problems such as difficulty in concentrating converted waves, increased cost, and larger necessary area of ​​wavelength conversion components, etc., to achieve reduction Effect of light source area and high conversion efficiency

Inactive Publication Date: 2010-03-24
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the above-mentioned conventional proposal, the actual light source area of ​​the converted wave becomes larger, and it becomes difficult to focus the converted wave.
In addition, in the above-mentioned conventional proposals, the required area of ​​the wavelength conversion element becomes large, and there is a problem of causing an increase in cost.

Method used

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  • Wavelength conversion laser and image display device
  • Wavelength conversion laser and image display device
  • Wavelength conversion laser and image display device

Examples

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no. 1 example

[0037] figure 1 It is a schematic diagram showing the appearance shape of the wavelength conversion element 10 in the first embodiment of the present invention. The wavelength conversion element 10 uses MgO:LiNbO with a polarization-reversed periodic structure 3 crystals. The shape of the wavelength converting element 10 may be, for example, a rod type having a length of 10 mm, a width and a thickness of 1 mm. The wavelength conversion element 10 converts the fundamental wave into a converted wave having a wavelength different from the fundamental wave. On one end surface 12 of the wavelength conversion element 10 in the longitudinal direction, a fundamental wave entrance 11 through which the fundamental wave is incident is formed. On both end faces in the longitudinal direction of the rod-shaped wavelength conversion element 10 , except for the fundamental wave entrance 11 , there are formed fundamental wave reflective films that reflect the fundamental wave.

[0038]In ...

no. 2 example

[0076] Figure 4 It is a schematic diagram showing the appearance shape of the wavelength conversion element 20 in the second embodiment of the present invention. Figure 5 (A) is a schematic plan view showing the structure of the wavelength conversion laser in the second embodiment of the present invention, Figure 5 (B) is a schematic side view showing the structure of the wavelength conversion laser in the second embodiment of the present invention. In addition, in the second embodiment, the same reference numerals are attached to the same structures as those in the first embodiment, and description thereof will be omitted.

[0077] The wavelength conversion laser 101 includes a fundamental laser light source 1 , a condenser lens 2 , a wavelength conversion element 20 and a resin cladding 14 .

[0078] The wavelength conversion element 20 adopts LiTa0 having a polarization inversion periodic structure. 3 crystals. The shape of the wavelength conversion element 20 is a r...

no. 3 example

[0097] Figure 7 It is a schematic diagram showing the structure of the wavelength conversion laser 102 in the third embodiment of the present invention. In addition, in the third embodiment, the same symbols are assigned to the same structures as those in the first and second embodiments, and descriptions thereof are omitted.

[0098] The wavelength conversion laser 102 includes a random polarized fundamental wave laser light source 39 , a condenser lens 2 , a wavelength conversion element 30 and a resin cladding 14 .

[0099] The wavelength conversion element 30 uses MgO:LiNbO with a polarization inversion periodic structure 3 The crystal (PPMgLN) includes a first wavelength conversion element 35 and a second wavelength conversion element 36 whose crystal axes are perpendicular to each other. The first wavelength conversion element 35 is bonded to the second wavelength conversion element 36 . exist Figure 7 Among them, the first wavelength conversion element 35 on the l...

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Abstract

A wavelength conversion laser is provided with a fundamental wave laser light source (1) for emitting fundamental waves, and a wavelength conversion element (10) for converting the fundamental waves emitted from the fundamental wave laser light source (1) into converted waves each of which has a wavelength different from that of the fundamental wave. At least one of a pair fundamental wave reflecting surfaces (12, 13), which are positioned on the both end sides in the optical axis direction of the wavelength conversion element (10) and pass through the fundamental waves a plurality of times inthe wavelength conversion element (10), passes through the conversion waves, and the pair of fundamental wave reflecting surfaces (12, 13) make the fundamental waves intersect in the wavelength conversion element (10), and a plurality of light collecting points are formed at points different from the intersecting point of the fundamental waves. Thus, the wavelength conversion laser is permitted to have high conversion efficiency and reduced dimensions.

Description

technical field [0001] The present invention relates to a wavelength conversion laser that performs wavelength conversion of a fundamental wave and outputs a converted wave having a wavelength different from the fundamental wave, and an image display device including the wavelength conversion laser. Background technique [0002] Conventionally, there are wavelength conversion lasers that convert the wavelength of the fundamental wave into converted waves such as second harmonic, sum frequency, or difference frequency by utilizing the nonlinear optical phenomenon of the wavelength conversion element. [0003] Figure 17 It is a schematic diagram showing the configuration of a conventional wavelength conversion laser. Existing wavelength conversion lasers such as Figure 17 As shown, it includes: a fundamental laser light source 301, a lens 302 for condensing the fundamental laser light emitted from the fundamental laser light source 301, a wavelength conversion element 303 fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/37H01S3/108
CPCH01S3/0092G02F1/37G02F2201/17G02F2001/3509G02F2001/3542G02F1/3509G02F1/3542
Inventor 水岛哲郎古屋博之式井慎一楠龟弘一堀川信之水内公典
Owner PANASONIC CORP