Optical device containing laser diode and luminous diode

A technology of laser diodes and light-emitting diodes, applied in lasers, phonon exciters, semiconductor lasers, etc., can solve the problems of reduced efficiency, narrow frequency bandwidth, damaged components, etc.

Inactive Publication Date: 2009-07-01
UNION OPTRONICS CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the light emitted by the laser diode has a narrow frequency bandwidth and a consistent phase, when the beam is projected onto the target area, it will cause a point-like distribution due to interference
On the other hand, the injection current of the laser diode must be greater than the critical current density, which is related to the interface temperature and indirectly affects the efficiency
When operating at high temperature, the critical current increases, the benefit decreases, and even the components are damaged

Method used

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  • Optical device containing laser diode and luminous diode
  • Optical device containing laser diode and luminous diode
  • Optical device containing laser diode and luminous diode

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Embodiment Construction

[0012] A light-emitting device, which includes at least one base, and on the base, there are one or more laser diode chips and one or more light-emitting diode chips, wherein at least one laser diode chip and one light-emitting diode chip placed on the base.

[0013] figure 1 Shown is the first embodiment, a light emitting device 10, which includes a lower base 11, a top base (header) 12 is located on the lower base 11, on one side of the top base 12 there is a primary base ( submount) 13, and there is at least one laser diode chip 14 on one side of the sub-base, and there is a photodetector diode 15 at the position of the lower base 11 relative to the laser diode. Generally speaking, the position 15 of the photodetector diode is the same as the laser diode chip 14's main light direction is opposite, such as figure 1 As shown in a, there is at least one light emitting diode chip 16 on the top base 12 , and the light emitting diode chip can also be arranged on the lower base ...

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PUM

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Abstract

The invention discloses a lighting device, which at least comprises a base, wherein the base is provided with a or a plurality of laser diode chips and a or a plurality of lighting diode chips, wherein at least a laser diode and a lighting diode is arranged on the base. The lighting device can have characteristic illuminating of the laser diode when an extremely narrow spectrum frequency bandwidth is needed, and characteristic illuminating of the lighting diode which has better heat dissipating characteristics when the extremely narrow spectrum frequency bandwidth is not needed.

Description

technical field [0001] The present invention relates to light emitting devices. Specifically, the invention is a light-emitting device that can produce uniform luminosity, low divergence, and narrow frequency bandwidth. More specifically, the light emitting device of the present invention is a light emitting device comprising at least one laser diode chip and at least one light emitting diode chip. Background technique [0002] Laser diodes have the advantages of small size, high efficiency, low power consumption, long service life, and easy modulation of their output power by the magnitude of the current. The application field of electroluminescent diodes is related to the wavelength it emits. Short-wavelength (390-950 nm) lasers are mainly used for optical information and display purposes such as optical disc drives, laser printers, barcode machines, and scanners, while long-wavelength (980-950 nm) 1500 nm) lasers are mainly used for optical fiber communication. The lum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/00
CPCH01S5/02469H01S5/02212
Inventor 许廷炜谢和铭李豪强黄鸿钧陈信钦
Owner UNION OPTRONICS CORP
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