CN204832751U - Laser projection light engine of high integration - Google Patents
Laser projection light engine of high integration Download PDFInfo
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- CN204832751U CN204832751U CN201520393176.8U CN201520393176U CN204832751U CN 204832751 U CN204832751 U CN 204832751U CN 201520393176 U CN201520393176 U CN 201520393176U CN 204832751 U CN204832751 U CN 204832751U
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Abstract
The utility model discloses a laser projection light engine of high integration, each semiconductor laser of control switch control send laser, and laser that ruddiness semiconductor laser sent passes through on the speculum reflects convex lens, on laser that blue light semiconductor laser and green glow semiconductor laser sent passes through and incides convex lens behind the color selective mirror, laser after through convex lens on the scattering piece assembles concavees lens, reentrant even optical module. Convex lens and concavees lens constitute confocal system and carry out the plastic to the light beam to obtain that spot size is suitable to be used for projected beam. The utility model discloses it not only has the effect of compression to close the light mode on the space to the laser beam of array, improved usable semiconductor laser figure in addition at double, can effectively utilize the space to can be conveniently arrange the figure of RGB three -colour laser instrument according to the actual demand, in order reaching better white balance effect, and then improve projected luminance and color rendition truly spends.
Description
Technical field
The utility model relates to projection display technique field, particularly relates to a kind of laser projection light engine of high integration.
Background technology
Full Color Laser Display Technique is a kind of emerging display technique, compared to ultrahigh pressure mercury lamp (UltraHighPerformance, UHP), metal halide lamp (MetalHalideLamp, MHP) as light source, semiconductor laser adopts direct drive, compared to light emitting diode (LightEmissionDiode, LED) as light source, laser has the feature of high monochromaticity, high color saturation.
At present, the difference of projector optical engine spatially modulation technique is mainly divided into digital light process (DigitalLightProcess, DLP), liquid crystal on silicon (LiquidCrystalonSilicon, LCOS), liquid crystal light valve (LiquidCrystalLightValve, LCLV) three classes, wherein LCD and LCOS needs incident light to be single polarization, DLP to incident polarization without the need to asking.
At present, laser projection adopts coupling fiber and space optical coupling two kinds of modes.The shortcoming of coupling fiber is that device cannot miniaturization, and Space Coupling many employings X prism or two dichronic mirror structure, X prism complex process, cost is high, and two dichronic mirror structure cannot miniaturization further.Especially, for semiconductor laser commercial at present, the Red and blue light of same package specification and the single tube output power difference of green glow larger, single ruddiness LD (RED) power is only 700 milliwatts, single green glow (Green) laser power is 1 watt, single blue light LD (Blue) power is 3.5 watts, and human eye imitates function difference also very greatly for looking of RGB tri-look, the number of RGB array module cannot meet white balance demand than the system for 1:1:1.Actual when using, the ruddiness LD that number must the be used more and less blue light LD of number and green glow LD is to obtain good white balance.In addition, in order to obtain high brightness, a large amount of laser tube forming arrays must be used, volume can be caused like this to reduce, and the size of closing bundle and difficulty all can increase along with number of lasers and promote.The present invention can simply effectively address this problem, and realizes the integration of even light.
Utility model content
The utility model object is exactly the defect in order to make up prior art, provides a kind of laser projection light engine of high integration.
The utility model is achieved through the following technical solutions:
A kind of laser projection light engine of high integration, include red light semiconductor laser array module, blue green light semiconductor laser array module, separate type arrangement catoptron and dichronic mirror array, gauge tap, convex lens, diffusion sheet, concavees lens and even optical module, described red light semiconductor laser array module is the rectangular array be made up of multiple red light semiconductor laser solid matter cloth, described blue green light semiconductor laser array module is the rectangular array identical with red light semiconductor laser array module be made up of multiple blue semiconductor laser and multiple green light semiconductor combination solid matter cloth, by red light semiconductor laser array module and the symmetrical placement of blue green light semiconductor laser array module, described gauge tap respectively with red light semiconductor laser, blue semiconductor laser and green light semiconductor electrical connection, described separate type arrangement catoptron and dichronic mirror array include multiple catoptron and multiple dichronic mirror, formation lens combination is fixedly connected with by a right angle to each catoptron and the end of dichronic mirror, separate type arranged catoptron and dichronic mirror array is placed between red light semiconductor laser array module and blue green light semiconductor laser array module, catoptron and red light semiconductor laser are one to one, dichronic mirror and blue semiconductor laser and green light semiconductor are one to one, thus obtain the beam array of compression, by described convex lens, diffusion sheet, concavees lens and even optical module are by being distributed in immediately below separate type arrangement catoptron and dichronic mirror array from top to bottom successively, gauge tap controls each semiconductor laser and sends laser, the laser that red light semiconductor laser sends reflexes on convex lens by catoptron, the laser that blue semiconductor laser and green light semiconductor send incides on convex lens after dichronic mirror, laser by converging on concavees lens through diffusion sheet after convex lens, then enters even optical module.Convex lens and concavees lens form confocal system and carry out shaping to light beam, thus obtain the suitable parallel beam for projecting of spot size.
Described red light semiconductor laser array module and blue green light semiconductor laser array module are all provided with the heat abstractor of TEC element, ensure system stable operation.
Before each red light semiconductor laser, blue semiconductor laser and green light semiconductor, all collimation lens is installed, for collimating the outgoing beam of semiconductor laser.
Metal-plated membrane or deielectric-coating on described catoptron, to ensure the high-efficiency reflective to ruddiness; Dichronic mirror is coated with to red spectral band high-transmission rate, deielectric-coating to blue green light wave band high reflectance, to realize efficiently closing light.
Described diffusion sheet can be rotate or vibrations, also can be static or use electrically-controlled liquid crystal, thus can eliminate speckle.
Described even optical module includes the two block array lens placed successively, one piece of convex lens and LCD.
Described even optical module includes square light siphunculus, is placed with convex lens and LCD respectively at the left and right end of square light siphunculus.
The three kinds of primary lights using RGB tri-look laser instrument to provide produce the method for three coloured light to replace traditional single LASER Light Source irradiation colour wheel that utilizes, thoroughly solve short problem in colour wheel serviceable life, simultaneously, full laser display has the advantage that color rendition degree is better, brightness is higher, and, because the semiconductor laser technology of commercialization is ripe all the more, greatly reduce the cost using RGB tri-look semiconductor laser.
Use the laser array that two symmetrical, red light semiconductor laser is placed in an independent array, while employing greater number semiconductor laser, the number of RGB tri-look laser instrument can be arranged easily according to the actual requirements, take into account the requirement improving brightness and realize white balance, high-quality white light source can have been obtained and export.
Adopt catoptron and the dichronic mirror array of separate type arrangement, by specific arrangement, spatially the collimated laser beam that laser array exports is compressed, although therefore employ the array of more large gauge to hold more multi-laser, whole system still can keep small-sized, compact structure.
The utility model has the advantages that: the utility model have employed separate type, the catoptron of arranging according to ad hoc fashion and dichronic mirror array carry out conjunction light, structure simple, intuitive, the laser beam of this conjunction light mode not only pair array spatially has the effect of compression, and improve available semiconductor laser number exponentially, space can be effectively utilized, use more multiple semiconductor laser instrument to improve power, and the number of RGB tri-look laser instrument can be arranged easily according to the actual requirements, to reach better white balance effect, and then improve brightness and the color rendition validity of projection.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model laser projection light engine.
Fig. 2 is the utility model separate type arrangement catoptron and dichronic mirror array structure schematic diagram.
Fig. 3 is a kind of catoptron of the utility model and dichronic mirror arrangement scheme schematic diagram.
Fig. 4 is the utility model semiconductor laser array structural representation (Fig. 4 a is red light semiconductor laser array module structural drawing, and Fig. 4 b is blue green light semiconductor laser array function structure chart).
Fig. 5 is the specially designed single-drum mirror intention of the utility model.
Fig. 6 is the schematic diagram that the utility model uses the even smooth scheme of array lens.
Fig. 7 is the schematic diagram that the utility model uses the even smooth scheme of square light siphunculus.
Embodiment
As Fig. 1, 2, 3, shown in 4, a kind of laser projection light engine of high integration, include red light semiconductor laser array module 1, blue green light semiconductor laser array module 2, separate type arrangement catoptron and dichronic mirror array 3, gauge tap 4, convex lens 5, diffusion sheet 6, concavees lens 7 and even optical module 8, described red light semiconductor laser array module 1 is the rectangular array be made up of multiple red light semiconductor laser 9 solid matter cloth, described blue green light semiconductor laser array module 2 combines by multiple blue semiconductor laser 10 and multiple green light semiconductor 11 rectangular array identical with red light semiconductor laser array module 1 that solid matter cloth forms, by red light semiconductor laser array module 1 and the symmetrical placement of blue green light semiconductor laser array module 2, to obtain initial collimation laser light source, described gauge tap 4 respectively with red light semiconductor laser 9, blue semiconductor laser 10 and green light semiconductor 11 are electrically connected, described separate type arrangement catoptron and dichronic mirror array 3 include multiple catoptron 12 and multiple dichronic mirror 13, formation lens combination is fixedly connected with by a right angle to each catoptron 12 and the end of dichronic mirror 13, multiple lens set synthesis parabola mode is arranged, separate type arranged catoptron and dichronic mirror array 3 is placed between red light semiconductor laser array module 1 and blue green light semiconductor laser array module 2, catoptron 12 and red light semiconductor laser 9 are one to one, dichronic mirror 13 is one to one with blue semiconductor laser 10 and green light semiconductor 11, thus obtain the beam array of compression, by described convex lens 5, diffusion sheet 6, concavees lens 7 and even optical module 8 are by being distributed in immediately below separate type arrangement catoptron and dichronic mirror array 3 from top to bottom successively, gauge tap 4 controls each semiconductor laser and sends laser, the laser that red light semiconductor laser 9 sends reflexes on convex lens 5 by catoptron 12, the laser that blue semiconductor laser 10 and green light semiconductor 11 send incides on convex lens 5 after dichronic mirror, laser by converging on concavees lens 7 through diffusion sheet 6 after convex lens 5, then enters even optical module 8.Convex lens 5 and concavees lens 7 form confocal system and carry out shaping to light beam, thus obtain the suitable parallel beam for projecting of spot size.
Described red light semiconductor laser array module 1 and blue green light semiconductor laser array module 2 are all provided with the heat abstractor of TEC element, ensure system stable operation.
If laser array adopts arrangement mode as shown in Figure 3, dichronic mirror can plate only to blue light or green light band high anti-, to the high saturating deielectric-coating of red spectral band, with Simplified flowsheet and improve transmitance.
Fig. 4 provides semiconductor laser array structural representation of the present utility model (Fig. 4 a is red light semiconductor laser array module structural drawing, and Fig. 4 b is blue green light semiconductor laser array function structure chart).
As shown in Figure 5, before each red light semiconductor laser 9, blue semiconductor laser 10 and green light semiconductor 11, collimation lens 14 is all installed, for collimating the outgoing beam of semiconductor laser.
Metal-plated membrane or deielectric-coating on described catoptron 12, to ensure the high-efficiency reflective to ruddiness; Dichronic mirror 13 is coated with to red spectral band high-transmission rate, deielectric-coating to blue green light wave band high reflectance, to realize closing light.
Described diffusion sheet 6 can be rotate or vibrations, also can be static or use electrically-controlled liquid crystal, thus can eliminate speckle.
As shown in Figure 6, described even optical module 8 includes two block array lens 15, one piece of convex lens 16 and LCD17 of placing successively.
As shown in Figure 7, described even optical module includes square light siphunculus 18, is placed with convex lens 16 and LCD17 respectively at the left and right end of square light siphunculus 18.
Embodiment:
Described semiconductor laser array module is made up of RGB tri-look laser instrument solid matter cloth, the semiconductor laser of current commercialization, single red laser power is 700 milliwatts, single blue laser power is 3.5 watts, single green (light) laser power is 1 watt, by the number ratio of each primary colours semiconductor laser of adjustment, high-quality white light can be obtained.Because the angle of divergence of semiconductor laser is larger, so place collimation lens to obtain directional light after each laser instrument.Gauge tap is work or time-sharing work for controlling laser instrument simultaneously, thus is applicable to different micro-display elements.Speckle is eliminated in the effect of diffusion sheet.Cross the light beam of convex lens convergence first through diffusion sheet, then through concavees lens.The device eliminating speckle can be the diffusion sheet rotating, shake, or static diffusion sheet, and electrically-controlled liquid crystal also can be adopted to eliminate speckle.Convex lens and concavees lens form confocal system, thus can utilize luminous energy effectively and uniformly.Even optical module can adopt the scheme such as array lens or square even light pipe.
Described separate type arrangement catoptron and dichronic mirror array 3 are key components of the present invention, and as shown in Figure 2, each junior unit is made up of catoptron and dichronic mirror.On catoptron 12, metal-plated membrane or deielectric-coating are to ensure the high-efficiency reflective to ruddiness; Dichronic mirror 13 is coated with to red spectral band high-transmission rate, to the deielectric-coating of blue green light wave band high reflectance, to realize closing light.Catoptron and dichronic mirror relation at a right angle.The quantity of catoptron 12 or dichronic mirror 13 is not limited to the quantity in Fig. 2, and its quantity and position should be corresponding with the laser instrument in semiconductor laser array module.Because the light beam parallelism after collimating mirror is relatively good, spot size is also less simultaneously, so the size of catoptron should be suitable with spot size.Take the arrangement mode shown in figure, the laser beam array of output can be narrowed width a by width b in one direction.
Described semiconductor laser array modular structure schematic diagram as shown in Figure 4, the laser instrument of RGB tri-look is arranged in the mode of solid matter cloth, just list a kind of possible arrangement mode in figure, actual number of lasers is determined by the requirement of the white balance of final demand fulfillment.
Described specially designed collimation lens schematic diagram as shown in Figure 5.Lens can be placed in the tubular groove of module, and regulate the spacing of lens and laser instrument by the position of lens movable in groove, make, from the laser beam of laser array outgoing, there is better collimation and consistance.
Described even optical module can take array lens or square light siphunculus two schemes, as shown in Figure 6 and Figure 7.Lenticule unit in array lens can be designed to specific shape according to actual needs, to mate micro-display panel of different aspect ratio, different size.The aspect ratio of square light siphunculus should be mated with micro-display panel, and length should be determined by the even light effect of actual needs.
Claims (7)
1. the laser projection light engine of a high integration, it is characterized in that: include red light semiconductor laser array module, blue green light semiconductor laser array module, separate type arrangement catoptron and dichronic mirror array, gauge tap, convex lens, diffusion sheet, concavees lens and even optical module, described red light semiconductor laser array module is the rectangular array be made up of multiple red light semiconductor laser solid matter cloth, described blue green light semiconductor laser array module is the rectangular array identical with red light semiconductor laser array module be made up of multiple blue semiconductor laser and multiple green light semiconductor combination solid matter cloth, by red light semiconductor laser array module and the symmetrical placement of blue green light semiconductor laser array module, described gauge tap respectively with red light semiconductor laser, blue semiconductor laser and green light semiconductor electrical connection, described separate type arrangement catoptron and dichronic mirror array include multiple catoptron and multiple dichronic mirror, formation lens combination is fixedly connected with by a right angle to each catoptron and the end of dichronic mirror, separate type arranged catoptron and dichronic mirror array is placed between red light semiconductor laser array module and blue green light semiconductor laser array module, catoptron and red light semiconductor laser are one to one, dichronic mirror and blue semiconductor laser and green light semiconductor are one to one, by described convex lens, diffusion sheet, concavees lens and even optical module are by being distributed in immediately below separate type arrangement catoptron and dichronic mirror array from top to bottom successively, gauge tap controls each semiconductor laser and sends laser, the laser that red light semiconductor laser sends reflexes on convex lens by catoptron, the laser that blue semiconductor laser and green light semiconductor send incides on convex lens after dichronic mirror, laser by converging on concavees lens through diffusion sheet after convex lens, then enters even optical module.
2. the laser projection light engine of a kind of high integration according to claim 1, is characterized in that: the heat abstractor being all provided with TEC element in described red light semiconductor laser array module and blue green light semiconductor laser array module.
3. the laser projection light engine of a kind of high integration according to claim 1, is characterized in that: before each red light semiconductor laser, blue semiconductor laser and green light semiconductor, be all provided with collimation lens.
4. the laser projection light engine of a kind of high integration according to claim 1, is characterized in that: metal-plated membrane or deielectric-coating on described catoptron; Dichronic mirror is coated with to red spectral band high-transmission rate, deielectric-coating to blue green light wave band high reflectance.
5. the laser projection light engine of a kind of high integration according to claim 1, is characterized in that: described diffusion sheet can be rotate or vibrations, also can be static or use electrically-controlled liquid crystal.
6. the laser projection light engine of a kind of high integration according to claim 1, is characterized in that: described even optical module includes the two block array lens placed successively, one piece of convex lens and LCD.
7. the laser projection light engine of a kind of high integration according to claim 1, is characterized in that: described even optical module includes square light siphunculus, is placed with convex lens and LCD respectively at the left and right end of square light siphunculus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520393176.8U CN204832751U (en) | 2015-06-08 | 2015-06-08 | Laser projection light engine of high integration |
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| CN201520393176.8U CN204832751U (en) | 2015-06-08 | 2015-06-08 | Laser projection light engine of high integration |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI673562B (en) * | 2018-05-02 | 2019-10-01 | 中強光電股份有限公司 | Projector and light source module |
| CN111562713A (en) * | 2020-03-31 | 2020-08-21 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN114336271A (en) * | 2021-11-29 | 2022-04-12 | 巴可伟视(北京)电子有限公司 | Preparation method of laser array driving module |
-
2015
- 2015-06-08 CN CN201520393176.8U patent/CN204832751U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI673562B (en) * | 2018-05-02 | 2019-10-01 | 中強光電股份有限公司 | Projector and light source module |
| US10782600B2 (en) | 2018-05-02 | 2020-09-22 | Coretronic Corporation | Projector and light source module |
| CN111562713A (en) * | 2020-03-31 | 2020-08-21 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN111562713B (en) * | 2020-03-31 | 2022-10-14 | 青岛海信激光显示股份有限公司 | Laser projection equipment |
| CN114336271A (en) * | 2021-11-29 | 2022-04-12 | 巴可伟视(北京)电子有限公司 | Preparation method of laser array driving module |
| CN114336271B (en) * | 2021-11-29 | 2024-05-07 | 巴可伟视(北京)电子有限公司 | Preparation method of laser array driving module |
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