CN103457147A - White light laser module - Google Patents
White light laser module Download PDFInfo
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- CN103457147A CN103457147A CN2013104179321A CN201310417932A CN103457147A CN 103457147 A CN103457147 A CN 103457147A CN 2013104179321 A CN2013104179321 A CN 2013104179321A CN 201310417932 A CN201310417932 A CN 201310417932A CN 103457147 A CN103457147 A CN 103457147A
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Abstract
The invention provides a white light laser module, and relates to laser modules. The white light laser module is provided with a green light Pr : YLF solid laser, a blue light semiconductor laser, a red light Pr : YLF solid laser, a blue-green dichroic mirror, a red-green dichroic mirror, a focusing lens and an optical fiber. The blue light semiconductor laser is vertically arranged on the upper left portion of the green light Pr : YLF solid laser, and the red light Pr : YLF solid laser is arranged on the left side of the blue light semiconductor laser. The blue-green dichroic mirror is arranged on the junction of blue light beams and green light beams and is used for vertically reflecting blue light to enable the blue light and the green light to be in the same direction. The red-green dichroic mirror is arranged on the junction of red light beams and green light beams and is used for vertically reflecting red light to enable the red light and the green light to be in the same direction. A ten-time objective lens is used as the focusing lens to be arranged at the exit end formed by the three light beams, namely the left end of the red-green dichroic mirror. The optical fiber is arranged at the position of the focal point of the focusing lens, and the three light beams are made to be coupled in the optical fiber.
Description
Technical field
The present invention relates to a kind of laser module, especially relate to by the coupling fiber mode, by a kind of white light laser module of redgreenblue laser synthesize white light.
Background technology
Main flow display device now is liquid crystal display, because liquid crystal panel itself is not luminous, need to provide back light just can show.Main flow is the LED-backlit module at present, and Chinese patent CN201288956 discloses a kind of LED-backlit module, comprises a backboard; One light guide plate, be placed on described backboard; Several LED devices, described LED device comprises several white light LEDs and several red-light LED, the adjacent both sides that are arranged in described light guide plate of described white light LEDs and red-light LED.But the luminous efficiency of LED is low, and the gamut range that LED produces is little.
With the LED-backlit source, compare, laser backlight has lot of advantages.The mechanism produced from the two light, what LED produced is fluorescence, have wider spectral line (being about tens nanometers), and the breadth of spectrum line of laser only has 2～3 nanometers, this has just illustrated that the monochromaticjty of laser will be better than the fluorescence of LED far away.Therefore laser will have wider colour gamut and abundanter color as backlight.In addition, the luminous efficiency of laser is also far away higher than LED, and environmental protection and energy saving more, more meet the requirement of display of future generation.
Summary of the invention
The object of the invention is to be for existing backlight module the deficiency of LED module, provide based on the red green laser of Pr:YLF and blue-light semiconductor laser as light source, and it is coupled into to a kind of white light laser module that 600 μ m optical fiber produce white lights.
The present invention is provided with 523nm green glow Pr:YLF solid state laser, 449nm blue-light semiconductor laser, 640nm ruddiness Pr:YLF solid state laser, bluish-green dichroic mirror, red and green color mirror, condenser lens and optical fiber;
Described 449nm blue-light semiconductor laser is vertical at the place, upper left side of 523nm green glow Pr:YLF solid state laser, and 640nm ruddiness Pr:YLF solid state laser is located at 449nm blue-light semiconductor laser left side; Bluish-green dichroic mirror is located at the intersection of blue light and green beam, for the blue light vertical reflection being made blue light and green glow in same direction; The red and green color mirror is located at the intersection of ruddiness and green beam, for the ruddiness vertical reflection being made ruddiness and green glow in same direction; It is the left end of red and green color mirror that 10 times of object lens are located at the photosynthetic exit end of three beams as condenser lens; Optical fiber is located at the focal position of condenser lens, makes in the three-beam coupled into optical fibres.
It is 600 μ m silica fibers that described optical fiber can adopt fibre core.
The present invention adopts ruddiness and green glow to mix praseodymium fluoride (Pr:YLF) solid state laser the red-green-blue laser coupled is entered to optical fiber, and output white light laser.Blue light and ruddiness through to after bluish-green dichroic mirror and red and green color mirror, finally pass through converging of micro-eyepiece respectively together with green glow, and coupled into optical fibres is also exported white light laser, has overcome the deficiency that existing backlight module is the LED module.The present invention adopts optical fiber as the coupling means, and the ruddiness of Pr:YLF and green (light) laser are as light source, by redgreenblue laser synthesize white light, for laser television provides desirable light source.
The accompanying drawing explanation
The structure that Fig. 1 is the embodiment of the present invention forms schematic diagram.
The transmittance graph that Fig. 2 is bluish-green dichroic mirror in the embodiment of the present invention.Wherein abscissa is wavelength (nm), and ordinate is transmissivity (a.u.).
The transmittance graph that Fig. 3 is red and green color mirror in experimental provision of the present invention.Wherein abscissa is wavelength (nm), and ordinate is transmissivity (a.u.).
Fig. 4 is the spectrogram that three primary colors are coupled to the white light laser of outgoing in optical fiber.Wherein abscissa is wavelength (nm), and ordinate is intensity (a.u.).
Embodiment
The invention will be further described in connection with Figure of description for following execution mode.
Referring to Fig. 1～4, the embodiment of the present invention is provided with the optical fiber 7 of 523nm green glow Pr:YLF solid state laser 1,449nm blue-light semiconductor laser 2,640nm ruddiness Pr:YLF solid state laser 3, bluish-green dichroic mirror 4, red and green color mirror 5, condenser lens 6 and fibre core 600 μ m.Described 449nm blue-light semiconductor laser 2 is vertical at the place, upper left side of 523nm green glow Pr:YLF solid state laser 1, and 640nm ruddiness Pr:YLF solid state laser 3 is located at 449nm blue-light semiconductor laser 2 left sides; Bluish-green dichroic mirror 4 is located at the intersection of blue light and green beam, for the blue light vertical reflection being made blue light and green glow in same direction; Red and green color mirror 5 is located at the intersection of ruddiness and green beam, for the ruddiness vertical reflection being made ruddiness and green glow in same direction; It is the left end of red and green color mirror 5 that 10 times of object lens are located at the photosynthetic exit end of three beams as condenser lens 6; The optical fiber 7 of fibre core 600 μ m is located at the focal position of condenser lens 6, makes in the three-beam coupled into optical fibres.
In the present invention, 449nm blue-light semiconductor laser 2 is as the blue-light source in three primary colors.523nm green glow Pr:YLF solid state laser 1 uses Pr:YLF as gain media, and as the green-light source in three primary colors.640nm ruddiness Pr:YLF solid state laser 3 uses Pr:YLF as gain media, and using it red-light source in three primary colors.
Red and green color mirror 5 is positioned at green glow output and ruddiness output, and 5 pairs of ruddiness of red and green color mirror have high reflectivity, and blue light and green glow are had to high transmissivity, for changing the ruddiness light path, ruddiness and green glow is placed in to same light path;
Bluish-green dichroic mirror 4 is positioned at green glow output and blue laser output end, and 4 pairs of blue lights of bluish-green dichroic mirror have high reflectivity, and green glow and ruddiness are had to high transmissivity, for changing blue light paths, blue light and green glow is placed in to same light path;
10 x Microscope Objectives are positioned at the output on RGB tri-coloured light roads as condenser lens 6, for by three beams the laser coupled on a light path advance optical fiber.
After the optical fiber 7 of fibre core 600 μ m is positioned at condenser lens, for integrated three primary colors.What the present invention adopted is the wide-aperture silica fiber of 600 μ m, in order to increase the coupling efficiency of laser, reduces power loss.
The optical fiber 7 of fibre core 600 μ m is as couplant, synthesizes and exports white light laser.
Fig. 2 provides the transmittance graph figure of bluish-green dichroic mirror 4, and as seen from Figure 2, this eyeglass is 99.1% at the reflectivity of 449.0nm, and the transmissivity at 523.0nm and 640.0nm place is 98.3%, 97.8%.
Fig. 3 provides the transmittance graph figure of red and green color mirror 5, and as seen from Figure 3, this eyeglass is 98.7% at the reflectivity of 640.0nm, and the transmissivity at 449.0nm and 523.0nm place is 95.7%, 96.5%
The three primary colors that provide Fig. 4 are coupled to the spectrogram of the white light laser of outgoing in optical fiber, and as seen from Figure 4, emitting laser divides all to have to swash in 449.0nm, 523.0nm, tri-wavelength location of 640.0nm to be penetrated.
Red and green color mirror and bluish-green dichroic mirror are high anti-at 640nm, 449nm place respectively, and simultaneously high saturating at 523nm, 449nm and 523nm, 640nm place respectively, two eyeglasses are used for changing the light path of blue light and ruddiness, and the RGB three-beam is placed in to same light path.Red green blue laser together converges in 600 μ m optical fiber after same lens, after coupling fiber, at exit end, has the white laser light source.
Claims (2)
1. a white light laser module, is characterized in that being provided with 523nm green glow Pr:YLF solid state laser, 449nm blue-light semiconductor laser, 640nm ruddiness Pr:YLF solid state laser, bluish-green dichroic mirror, red and green color mirror, condenser lens and optical fiber;
Described 449nm blue-light semiconductor laser is vertical at the place, upper left side of 523nm green glow Pr:YLF solid state laser, and 640nm ruddiness Pr:YLF solid state laser is located at 449nm blue-light semiconductor laser left side; Bluish-green dichroic mirror is located at the intersection of blue light and green beam, for the blue light vertical reflection being made blue light and green glow in same direction; The red and green color mirror is located at the intersection of ruddiness and green beam, for the ruddiness vertical reflection being made ruddiness and green glow in same direction; It is the left end of red and green color mirror that 10 times of object lens are located at the photosynthetic exit end of three beams as condenser lens; Optical fiber is located at the focal position of condenser lens, makes in the three-beam coupled into optical fibres.
2. a kind of white light laser module as claimed in claim 1, is characterized in that it is 600 μ m silica fibers that described optical fiber adopts fibre core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013104179321A CN103457147A (en) | 2013-09-13 | 2013-09-13 | White light laser module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013104179321A CN103457147A (en) | 2013-09-13 | 2013-09-13 | White light laser module |
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| CN103457147A true CN103457147A (en) | 2013-12-18 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836397A (en) * | 2012-11-27 | 2014-06-04 | 海洋王（东莞）照明科技有限公司 | Anti-vibration laser lamp |
| CN103972788A (en) * | 2014-05-14 | 2014-08-06 | 南通广兴气动设备有限公司 | Red and green laser module |
| CN106785871A (en) * | 2017-03-08 | 2017-05-31 | 严伟 | Synthesize the device and method of white light based on RGB semiconductor laser |
| CN107994448A (en) * | 2017-12-01 | 2018-05-04 | 华侨大学 | A kind of white light laser |
| WO2021068935A1 (en) * | 2019-10-11 | 2021-04-15 | 山西汉威激光科技股份有限公司 | Large-color-gamut laser light source system integrated by means of trapped wave beam combination |
| CN113872032A (en) * | 2021-11-11 | 2021-12-31 | 浙江光塔安全科技有限公司 | Multi-wavelength multi-light-beam combining system, coupling lens and design method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101101437A (en) * | 2006-07-04 | 2008-01-09 | Lg电子株式会社 | Projection system |
| CN103076983A (en) * | 2013-01-28 | 2013-05-01 | 中国科学技术大学 | Touch screen man-machine interactive system based on laser projection |
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2013
- 2013-09-13 CN CN2013104179321A patent/CN103457147A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101101437A (en) * | 2006-07-04 | 2008-01-09 | Lg电子株式会社 | Projection system |
| CN103076983A (en) * | 2013-01-28 | 2013-05-01 | 中国科学技术大学 | Touch screen man-machine interactive system based on laser projection |
Non-Patent Citations (1)
| Title |
|---|
| 黄舜林 等: "蓝光激光二极管抽运Pr:YLF绿光激光器", 《中国激光》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836397A (en) * | 2012-11-27 | 2014-06-04 | 海洋王（东莞）照明科技有限公司 | Anti-vibration laser lamp |
| CN103836397B (en) * | 2012-11-27 | 2016-04-20 | 海洋王（东莞）照明科技有限公司 | A kind of vibrationproof laser lamp |
| CN103972788A (en) * | 2014-05-14 | 2014-08-06 | 南通广兴气动设备有限公司 | Red and green laser module |
| CN106785871A (en) * | 2017-03-08 | 2017-05-31 | 严伟 | Synthesize the device and method of white light based on RGB semiconductor laser |
| CN107994448A (en) * | 2017-12-01 | 2018-05-04 | 华侨大学 | A kind of white light laser |
| CN107994448B (en) * | 2017-12-01 | 2023-05-26 | 华侨大学 | White light laser |
| WO2021068935A1 (en) * | 2019-10-11 | 2021-04-15 | 山西汉威激光科技股份有限公司 | Large-color-gamut laser light source system integrated by means of trapped wave beam combination |
| CN113872032A (en) * | 2021-11-11 | 2021-12-31 | 浙江光塔安全科技有限公司 | Multi-wavelength multi-light-beam combining system, coupling lens and design method |
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Application publication date: 20131218 |