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Laser diode device

A laser diode and laser array technology, applied in the laser field, can solve problems such as large color difference and uneven brightness

Inactive Publication Date: 2019-09-13
HONG FU JIN PRECISION IND WUHAN CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, it is necessary to provide a laser diode device, which can improve the phenomenon of uneven brightness and large color difference when a single picture of a projected 3D picture of a laser diode light source is presented.

Method used

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  • Laser diode device
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Embodiment Construction

[0026] see Figure 1-3 , a laser diode device 100, which can be used as a light source module of a projection system. The projection system is preferably a projection system based on a laser light source, such as a 3D projection system based on a laser light source. The laser diode device 100 includes a first laser array 20 composed of N laser diodes 10 and a collimating lens 12 corresponding to each of the laser diodes 10 . In the following, N=18 is taken as an example for illustration, and each of the laser diodes 10 is numbered from one to eighteen. The eighteen laser diodes 10 form a 3*6 matrix array, and the number of the laser diodes 10 is not limited, and may be more than eighteen or less than eighteen. The number of the collimating lenses 12 is preferably the same as the number of the laser diodes 10 .

[0027] A positioning portion 14 is provided on an outer edge of each laser diode 10 . For example, a first V-shaped notch V1, a second V-shaped notch V2 and a conca...

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Abstract

A laser diode device comprises a laser array and collimating lenses, wherein the laser array comprises N laser diodes, the collimating lenses are in one-to-one correspondence to the laser diodes, a positioning part is arranged at an outer edge of a pipe shell of each laser diode, a gradually-changing rotation angle is at each laser diode, and preset angle difference is formed between a facing direction of the positioning part of the N(th) laser diode and a facing direction of the positioning part of the (N-1)th laser diode. A non-polarization light source covering within an approximate 360-degree angle range can be achieved by a light beam obtained by the laser diode device and is used for substituting a traditional projector light source, and a phenomenon of local non-uniform brightness and aberration of a single picture can be prevented when a user views a 3D projection photo.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a laser diode device. Background technique [0002] Currently, data projectors are widely used as image projection devices that project personal computer screens, video images, images of image data stored in memory cards, etc., on a screen, and the like. In such projectors, a high-intensity discharge lamp has been used as a light source mainly in the past. In recent years, there have been many developments and proposals of light emitting devices using semiconductor light emitting devices such as light emitting diodes (LEDs) and laser diodes (LDs) as light source devices. [0003] Due to the single polarization characteristic of the laser diode itself, but because the devices for viewing 3D projection effects are equipped with peripheral equipment composed of polarizers, if no additional treatment is performed on the light source of the laser diode device, it will cause the human ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/40H01S5/00
CPCH01S5/4025H01S5/005G02B27/283G02B27/286G02B27/30G03B21/2033H01S5/02212H01S5/4012G02B27/106
Inventor 卓俊贤
Owner HONG FU JIN PRECISION IND WUHAN CO LTD
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