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Lighting device and projector

A technology for lighting devices and light guide tubes, which is applied to lighting devices, lighting device parts, lighting applications, etc., can solve problems such as the reduction of light efficiency of lighting devices, and achieve the effect of solving the reduction of light efficiency and improving tolerance.

Active Publication Date: 2013-10-23
CORETRONIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned problems, an object of the present invention is to provide an illuminating device, which can solve the problem of lowering the light efficiency of the above-mentioned illuminating device and obtain a light beam of a desired wavelength.

Method used

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  • Lighting device and projector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] image 3 is a schematic diagram of a first embodiment of a lighting device 10 according to the present invention. The lighting device 10 according to the present invention includes a light source 1, which is a laser diode array including a plurality of laser diodes and emits blue laser light, for example; a plurality of collimating lenses 2, which are respectively connected to the light source 1 A plurality of laser diodes correspond to each other, and are used to collimate the blue laser light from the corresponding laser diodes into parallel light; the compression optical element 3 is used to make the distance between the mutually parallel blue laser beams emitted from each collimating lens 2 The spacing becomes smaller; the converging lens 4 is used to converge the blue laser beam emitted from the compression optical element 3; the tapered light guide 5 is used to receive the blue laser beam from the converging lens 4; the phosphor 6 is used to Convert the blue lase...

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PUM

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Abstract

The present invention relates to a illuminating device and a projector. The illuminating device comprising a light source (1), an optical unit (20) configured to adjust direction of light from the light source (1) and a reflector (7), characterized in that the illuminating device further comprises a light pipe (5) and an exciter (6), the light pipe (5) receives light (L1) having a first wavelength from the optical unit (20) and directs the light (L1) having the first wavelength onto the exciter (6), the exciter (6) converts the light (L1) having the first wavelength into light (L2) having the second wavelength and reflects the light (L2) having the second wavelength to the reflector (7), wherein a circumferential wall of the light pipe (5) is configured to reflect the light (L1) having the first wavelength and to transmit the light (L2) having the second wavelength.

Description

technical field [0001] The invention relates to an illuminating device and a projector. Background technique [0002] Since the laser light source (for example, laser diode (LD)) has the characteristics of good monochromaticity, strong directionality and high brightness, people pay more and more attention to LD lighting devices and apply them in various environments (such as, Medical equipment, car headlights, night vision monitoring, stage lighting, etc.). Compared with light-emitting diode (LED) lighting devices, LD lighting devices have a longer lighting distance and a longer lifespan. [0003] In the prior art, such LD lighting devices usually include a laser diode array for generating laser beams; each collimator lens corresponding to each laser diode in the laser diode array is used to divert the divergent laser light emitted from the corresponding laser diode beam collimation; a compressive optical element for reducing the spacing between mutually parallel laser bea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20F21V13/00
CPCG02B6/00F21Y2101/025F21W2131/406F21V7/0025G02B6/003H04N9/3152G03B21/2033G02B6/0096F21Y2101/00F21Y2115/30F21V7/08F21V9/08F21V13/08G02B27/102
Inventor 丁毅哈特维格·乌尔里希
Owner CORETRONIC