CN104280992A - Projection system and laser light source module suitable for same - Google Patents
Projection system and laser light source module suitable for same Download PDFInfo
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- CN104280992A CN104280992A CN201310294011.0A CN201310294011A CN104280992A CN 104280992 A CN104280992 A CN 104280992A CN 201310294011 A CN201310294011 A CN 201310294011A CN 104280992 A CN104280992 A CN 104280992A
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- light source
- laser light
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2053—Intensity control of illuminating light
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
Abstract
The invention relates to a projection system and a laser light source module suitable for the same. The projection system comprises the laser light source module, a light modulator and a projection lens. The laser light source module comprises one or more laser light sources, one or more wavelength conversion elements, an optical detection module and a controller. The laser light sources emit light beams of the first wavelength. The wavelength conversion elements are used for converting the light beams of the first wavelength into one or more kinds of light beams of the wavelengths different from the first wavelength. The optical detection module comprises an optical sensor and is arranged adjacent to the wavelength conversion elements. The controller is electrically connected with the optical detection module. The optical sensor of the laser light source module is used for detecting the energy, larger than the etendue of the system, of the light beams of the wavelengths different from the first wavelength emitted by the wavelength conversion elements, and optical modulation or compensation is carried out on one or both of the brightness and the color of the laser light source module through the controller according to the monitoring result obtained by the optical sensor.
Description
Technical field
The present invention relates to a kind of laser light source module being applicable to optical projection system, espespecially a kind of optical sensor that can pass through is to carry out the light beam of supervisory wavelength conversion element output, can effectively control by this laser light source module and the final output brightness of optical projection system that is suitable for or the stability of color, make it not because of LASER Light Source or the decline of Wavelength changing element and produce variation.
Background technology
The light source of current most optical projection system adopts high-pressure sodium lamp (UHP lamp) or xenon lamp (Xenon lamp) usually, but it is shorter that these light sources all have the life-span, and there are the problems such as many unnecessary ultraviolet lights and infrared light generation.At present, though there is the application using light emitting diode (LED) as optical projection system light source, to obtain the longer life-span, and there is no unnecessary ultraviolet light or infrared light, but LED light source is due to the restriction of etendue (Etendue), make the utilization ratio of light not high, and total light output of LED is lower, the application therefore in optical projection system is greatly limited.
For solving the problem, thus develop with laser collocation Wavelength changing element, as the light source module that optical projection system uses.Adopt the advantage of LASER Light Source to be that it has stability and high life, in addition, LASER Light Source has more the little feature of etendue, optical energy utilization efficiency advantages of higher.But the efficiency due to LASER Light Source and Wavelength changing element still has decay by a small margin after using for a long time, light source module and even the final output brightness of optical projection system or color all can be affected both this, how to carry out brightness to laser light source module, or the real-time optical of color compensates and regulation and control, real in adopting laser light source module and applicable optical projection system problem in the urgent need to address at present thereof.
Summary of the invention
An object of the present invention is for providing a kind of optical projection system, it adopts at least one LASER Light Source, and there is at least one Wavelength changing element and at least one smooth detection module, the light beam of first wave length that wherein LASER Light Source is launched by Wavelength changing element system is converted to the light beam that at least one is different from first wave length, and send the energy not being greater than the available etendue part of optical projection system in the light beam of first wave length with determined wavelength conversion element through the light detection module being adjacent to Wavelength changing element, and then can reach and judge and control the output power of LASER Light Source, to reach modulation or to compensate the brightness of optical projection system or one of them of color.
Of the present invention one another object is for providing a kind of laser light source module being applicable to optical projection system, wherein there is in laser light source module light detection module, to detect the light beam being greater than the available etendue part of optical projection system, and this light detection module is not arranged in system light path, therefore it can not affect the overall light output of optical projection system, and by light detection module with the decay situation of real-time detection laser light source and Wavelength changing element, and can one of them of the brightness of modulated laser light source and color further.
For reaching above-mentioned purpose, a better form of implementation of the present invention, for providing a kind of optical projection system, comprises laser light source module, photomodulator and projection lens; Laser light source module comprises: at least one LASER Light Source, launches the light beam with first wave length; Wavelength changing element, for converting the light beam with first wave length to light beam that at least one is different from first wave length; Light detection module, comprises optical sensor, and light detection module is adjacent to Wavelength changing element; And controller, be electrically connected with light detection module; Photomodulator, receives the light beam of laser light source module, and transmitted beam; And projection lens, receive the light beam that photomodulator is launched, and project image strip; Wherein, the energy being greater than system etendue being different from the light beam of first wave length that the optical sensor of laser light source module is launched in order to determined wavelength conversion element, and according to the result of optical sensor monitoring, to carry out at least one of them optical modulation or the compensation of the brightness of laser light source module and color through controller.
For reaching above-mentioned purpose, another better form of implementation of the present invention, for providing a kind of laser light source module, is applicable to optical projection system, comprises: at least one LASER Light Source, launches the light beam with first wave length; Wavelength changing element, for converting the light beam with first wave length to light beam that at least one is different from first wave length; Light detection module, comprises at least one optical sensor, and light detection module is adjacent to Wavelength changing element; And controller, be electrically connected wherein with light detection module, optical sensor launch in order to determined wavelength conversion element this be different from the energy being greater than system etendue of the light beam of first wave length, and according to the result of optical sensor monitoring, to carry out at least one of them optical modulation or the compensation of the brightness of at least one LASER Light Source and color through controller.
Accompanying drawing explanation
Fig. 1 is the configuration diagram of the optical projection system of the use LASER Light Source of the present invention first preferred embodiment.
Fig. 2 is the configuration diagram of the laser light source module of the optical projection system of the penetration shown in Fig. 1.
Fig. 3 is the configuration diagram of the laser light source module of the reflective projection system of the present invention second preferred embodiment.
Fig. 4 is the configuration diagram of the single-panel projection system of the use LASER Light Source of the present invention the 3rd preferred embodiment.
Fig. 5 is the configuration diagram of the three-panel projection system of the use LASER Light Source of the present invention the 4th preferred embodiment.
Wherein, description of reference numerals is as follows:
1,2: optical projection system
10,20,30,40: laser light source module
100,200,300,400: the light beam with first wave length
101,201,301,302,402: the light beam being different from first wave length that Wavelength changing element is launched
11,22,32,42: LASER Light Source
12,23,33: Wavelength changing element
13,24,34,44: light test set
131: optical sensor
14,25,35,45: controller
151,152,153,261,262,36: relay lens group
16,21: even group of light
17,31,41,411,412,413: photomodulator
18,37,47: projection lens
27: catoptron
3: single-panel projection system
4: three-panel projection system
421: the first light source groups
422: secondary light source group
431: first wave length conversion element
432: second wave length conversion element
441: the first optical sensors
442: the second optical sensors
401: the light beam with second wave length
403: the light beam being different from second wave length that second wave length conversion element is launched
E, E1, E2: etendue
θ
1: the angle of the light beam that photomodulator projects
θ
2: half-angle 90.
θ
3+ θ
4: the emission angle of what Wavelength changing element was launched the be different from light beam of first wave length
θ
3: the emission angle being different from first wave length that Wavelength changing element is launched, its largest beam angle that can be used by system etendue
θ
4: what Wavelength changing element was launched with it the be different from light beam of first wave length fail the angle that uses by system etendue
Embodiment
Some exemplary embodiments embodying feature & benefits of the present invention describe in detail in the explanation of back segment.Be understood that the present invention can have various changes different in form, so it neither departs from the scope of the present invention, and explanation wherein and graphic be use when explain in itself, and be not used to limit the present invention.
Refer to Fig. 1, it is the configuration diagram of the optical projection system of the use LASER Light Source of the present invention first preferred embodiment.As shown in the figure, optical projection system 1 of the present invention comprises laser light source module 10 and the photomodulator 17 for laser light source module 10 projecting beam, wherein, this laser light source module 10 comprises LASER Light Source 11, Wavelength changing element 12, light detection module 13, controller 14, multiple relay lens group 151,152 and light and evenly organizes the assemblies such as 16.In the present embodiment, optical projection system 1 adopts LASER Light Source 11, and the quantity of LASER Light Source 11 can be one or for multiple LASER Light Source group, and it can apply situation according to actual and appoint and execute change.As shown in the figure, this LASER Light Source 11 launches the light beam 100 with first wave length, when the light beam 100 with first wave length is injected after in Wavelength changing element 12 through relay lens group 151, then by the Lambertian cosine law of Wavelength changing element 12, to carry out wavelength convert, now, via the light beam dispersed after Wavelength changing element 12, its wavelength is different from original first wave length, in some embodiments, the optical module that Wavelength changing element 12 is the static or dynamic rotary that has that at least one phosphor powder combines, such as can monochromatic or multicolor fluorescence wheel (Phosphor Wheel), but not as limit.For example, if Wavelength changing element 12 is one-color fluorescence wheel, then via the light beam after Wavelength changing element 12 101 for having the light beam 101 of second wave length, certainly, if Wavelength changing element 12 as previously mentioned, for multicolor fluorescence wheel, then it also can produce the light beam 101 of multi-wavelength simultaneously, such as can be the light beam simultaneously with second wave length, the 3rd wavelength or the 4th wavelength, as can be seen here, the wavelength of light beam 101 can be appointed according to the type of Wavelength changing element 12 and executed change, is not limited with aforementioned embodiments.
As shown in Figure 1, when the light beam 100 with first wave length is via Wavelength changing element 12 after being converted to the light beam 101 being different from first wave length, then sustainably through relay lens group 152, light evenly organizes the regulation and control of the optical modules such as 16 and other relay lens group 153, with convergence or the path dispersing or change light beam 101, and then make it enter into photomodulator 17, again via photomodulator 17 to project projection lens 18, and project image strip by projection lens 18, this is entire system framework and the system light path thereof of the optical projection system using LASER Light Source, wherein, photomodulator 17 can be liquid crystal indicator (LCD), liquid crystal on silicon (LCOS) display device (LCoS) or digital micro-mirror device (DMD) etc., because these forms of implementation belong to design conventional and comparatively universal now, therefore seldom repeat at this.But, in the present embodiment, in order to brightness and the color change of monitoring laser light source 11 constantly, and do not have influence on total system light path, thus be provided with light detection module 13 and to the controller 14 of electrical connection to carry out relevant monitoring results.
Please continue and consult the 1st figure, as shown in the figure, the light detection module 13 of optical projection system 1 is adjacent to a side of Wavelength changing element 12, and it is not arranged in the course of light beam 101, this light detection module 13 is main in order to detect the energy being greater than the available etendue part of optical projection system 1 that this Wavelength changing element 12 sends, portion of energy outside the efficient beam 101 of meaning and system, and the result detected is passed in the controller 14 be electrically connected with light detection module 13, and then can according to the monitoring result of light detection module 13 to carry out the control of output power to LASER Light Source 11, and then brightness and one of them optical property compensation of color or modulation are carried out to optical projection system 1.
In some embodiments, light detection module 13 is arranged at the angular range θ of Wavelength changing element 12 and its light beam 101 exported
4in, therefore it can not stop the course of the light beam 101 that Wavelength changing element 12 exports, and this angular range θ can be detected
4interior energy, and why know the current intensity of the commutating optical beam of Wavelength changing element 12 by these data, and when maybe can need to change brightness and colour temperature when strength retrogression, basis for estimation is provided, and then by controller 14 to control the output power of LASER Light Source 11, reach the function such as brightness change and color adaptation of modulating overall optical projection system 1.
As for this angular range θ
4definition, then can be tried to achieve by the theorem of etendue (Etendue) conservation, be described as follows:
Etendue (Etendue) conservation principle
If when the light beam 100 of the first wave length of LASER Light Source 11 is incident to Wavelength changing element 12, Wavelength changing element 12 sends the other light beam 101 in first wave length and with Lambertian cosine law uniform emission, now this formula can be reduced to E=π Asin
2θ=π A/4 (f#)
2, more further by the angle of the area of the photomodulator 17 of optical projection system 1 and projection lens 18 receivable efficient beam 101 incident light modulator 17 and its photomodulator 17 effectively etendue E1 define, then this etendue E
1=π A
panelsin
2θ
1, but when the light beam 100 of first wave length incides Wavelength changing element 12, and send into not in the process of the light beam 101 of first wave length, its emission angle represents with the characteristic of the Lambertian cosine law, therefore its etendue E
2=π A
emittingSpotSizesin
2θ
2, θ
2=90 °.Due in fact E
2>E
1, the energy that namely meaning has part to be greater than the etendue of system effectively cannot be used by photomodulator 17, and this invalid energy is E
2-E
3, E
3=π A
emittingSpotSizesin
2θ
3=E
1=π A
panelsin θ
1, θ
3<90 °, therefore light detection module 13 can be put in θ
4position on, and define θ
2-θ
3=θ
4.Etendue (Etendue) conservation principle can try to achieve this angular range θ set by light detection module 13 thus
4, and this angular range θ
4with effective etendue associated of this photomodulator 17, the position of angle is by this put light detection module 13 and do not have the energy loss that the crested of system efficient light sources arrives, and detect through this light detection module 13 energy being greater than the effective etendue of system that this Wavelength changing element 12 produces, and then know the required output power controlling LASER Light Source 11, modulate the brightness change of overall optical projection system 1 and the basis for estimation of color adaptation to reach.
Refer to Fig. 2, Fig. 2 is the configuration diagram of the laser light source module of the optical projection system of the penetration shown in Fig. 1.In the present embodiment, optical projection system 1 belongs to penetration optical projection system, and certainly, optical projection system 1 can have multiple form of implementation, not as limit.And the present embodiment is the related framework of the laser light source module 10 in display penetration optical projection system 1, therefore the Wavelength changing element 12 adopted in the laser light source module 10 of the present embodiment is the optical module of penetration, therefore, when LASER Light Source 11 launches the light beam 100 with first wave length, and light beam 100 is via relay lens group 151 after entering the Wavelength changing element 12 of penetration, then by Wavelength changing element 12, this first wave length is converted to the light beam 101 having and be different from first wave length, and evenly organize in 16 to enter light via another relay lens group 152 again, to carry out the regulation and control of optical path.Now, then through being arranged at the light detection module 13 of a side of penetration Wavelength changing element 12 and optical sensor 131 wherein with the part luminous energy outside the efficient beam 101 of detection system, be the θ in diagram
4regional extent in luminous energy, through the luminous energy that this part detects, and then LASER Light Source 11 can be assessed with or without the problem of light intensity decays or the situation such as brightness and colour temperature need be adjusted, then be directly the optical modulation such as system brightness and colour temperature to LASER Light Source 11 by controller 14 for the situation after its assessment.
In this laser light source module 10, these relay lens groups 151,152 etc. can be made up of jointly optical modules such as multiple lens, but not as limit, it is mainly in order to convergence or the path dispersing or change light beam 100,101, due to the common technology that these optical modules are field of optical systems, therefore no longer repeat.In addition, light detection module 13 is except possessing optical sensor 131, and attenuator of more can arranging in pairs or groups, the optical module such as optical filter or integral element, and not as limit, it can apply situation according to actual and appoint and execute change.
Refer to Fig. 3, it is the configuration diagram of the laser light source module of the reflective projection system of the present invention second preferred embodiment.As shown in the figure, reflective projection system 2 of the present invention also comprises laser light source module 20, this laser light source module 20 comprises LASER Light Source 22, Wavelength changing element 23, light detection module 24, controller 25, relay lens group 261,262 and light equally and evenly organizes the assemblies such as 21, and the structure of these optical modules and previous embodiment similar, therefore no longer to repeat.But in the present embodiment, Wavelength changing element 23 in reflective projection system 2 is a reflective optical module, therefore in LASER Light Source optical projection system 2, more comprise a spectroscope 27, its function is cause the light beam 200 with first wave length to penetrate, and is reflected by the efficient beam 201 being different from first wave length exported by reflective Wavelength changing element 23.Be with, the light beam 200 with first wave length launched when LASER Light Source 22 enters this reflective Wavelength changing element 23, and produce the light beam 201 being different from first wave length in the mode of the Lambertian cosine law after, this light beam 201 can pass through spectroscope 27 to change its optical path, thereafter enter light via relay lens group 261 again and evenly organize 21, optical path and the previous embodiment of evenly organizing the light beam 201 exported after 21 as light are similar, can enter again in photomodulator (not shown) equally and modulate, thereafter again by projection lens (non-icon) image output light beam.
Though the reflective projection system 2 of the present embodiment Wavelength changing element 23 that to be employing one reflective, but wherein the structure of light detection module 24 and set-up mode still similar with previous embodiment, be adjacent to a side of Wavelength changing element 23 equally, and it is arranged at the angular range θ of Wavelength changing element 23 and its light beam 201 exported
4in, therefore it can not stop the course of the efficient beam 201 that Wavelength changing element 23 exports, and by detecting this θ
4the luminous energy of regional extent, to know and why to judge the current intensity of the commutating optical beam of Wavelength changing element 23, and the basis for estimation of adjustment brightness and color compensating can be provided when LASER Light Source 22 or Wavelength changing element 23 decay, and then through controller 25 to control the output power of LASER Light Source 22, reach effects such as can modulating optical projection system brightness change and color adaptation.
Refer to Fig. 4, it is the configuration diagram of the single-panel projection system of the use LASER Light Source of the present invention the 3rd preferred embodiment.As shown in the figure, single-panel projection system 3 of the present invention also comprises the assemblies such as laser light source module 30, the photomodulator 31 supplying laser light source module 30 projecting beam and projection lens 37, wherein, this laser light source module 30 comprises the assemblies such as LASER Light Source 32, Wavelength changing element 33, light detection module 34, controller 35 and relay lens group 36 equally, and the structure system of these optical modules and previous embodiment similar, therefore no longer to repeat.But in the present embodiment, single-panel projection system 3 is the optical projection system of an one chip, therefore only there is in single-panel projection system 3 single photomodulator 31.The light beam 300 with first wave length launched when the LASER Light Source 32 of optical projection system 3 enters Wavelength changing element 33, and produce be different from the light beam 301,302 of first wave length after, this light beam 301,302 being different from first wave length can as aforesaid embodiment, the optical path adjustment evenly organized via multiple relay lens group and light, and then project in this single photomodulator 31, to be follow-uply projected to again in projection lens 37.Simultaneously, when the light beam 300 of first wave length enter Wavelength changing element 33 be different from light beam 301,302 of first wave length to produce time, the light detection module 34 that can pass through the side being adjacent to Wavelength changing element 33 equally, to detect the energy that it is greater than system etendue, is this θ
4the luminous energy of regional extent, and the result detected is passed in controller 35, and then know that this need control the output power of LASER Light Source 32, to obtain the wherein regulation and control basis for estimation one of at least of the brightness change of laser light source module 30 and color adaptation, and can monitor the output power of LASER Light Source 32, and then reach the energy datum that can detect according to it and modulate the brightness of this single-panel projection system 3 and effect of colour temperature.
Refer to Fig. 5, it is the configuration diagram of the three-panel projection system of the use LASER Light Source of the present invention the 4th preferred embodiment.Similar with previous embodiment, three-panel projection system 4 also has the optical modules such as laser light source module 40, photomodulator 41 and projection lens 47, but in the present embodiment, three-panel projection system 4 is the optical projection system of three-chip type, therefore it has three photomodulators 411,412,413.In addition, in the present embodiment, the LASER Light Source 42 of laser light source module 40 adopts first and second light source group 421,422 respectively, wherein the first light source group 421 projection has in light beam 400 to the first wave length conversion element 431 of first wave length, to produce the light beam 402 being different from first wave length, and namely the first optical sensor 441 is adjacent to the side of first wave length conversion element 431, in order to detect this light beam 402 being different from first wave length be greater than the energy of system etendue, be this θ
4the luminous energy of regional extent, and by be passed to controller 45.On the other hand, 422 projections of secondary light source group have in light beam 401 to the second wave length conversion element 432 of second wave length, to produce the light beam 403 being different from second wave length, and the second optical sensor 442 is also adjacent to the side of second wave length conversion element 432, the light beam 403 being different from the second second wave length in order to detect this is greater than the energy of the loss of system etendue, is namely similarly this θ
4the luminous energy of regional extent, and it is passed in controller 45.Controller 45 can control the output power of the first light source group 421 and secondary light source group 422 after receiving the information that light detection module 44 transmits respectively, and the luminance compensation reached laser light source module 40 or at least one optical modulation of colour temperature regulation and control.As for through the output beam 402,403 of two kinds of Wavelength changing elements 431,432 via the dispersing of the optical module in three-panel projection system 4, restrain, reflection etc., then can be divided into light beam R, G, B of three kinds of different wave lengths, and project in photomodulator 411,412,413 respectively, form thereafter image strip again and be projected in camera lens 47.
In the present embodiment, the first sensor 441 of light detection module 44 and the second sensor 442 are also arranged at the angular range θ of the output beam 402 of first wave length conversion element 431 and first wave length conversion element 431 respectively
4, second wave length conversion element 432 and the output beam 403 of second wave length conversion element 432 angular range θ
4in, and this angular range θ
4equally can by projection lens 47 and photomodulator 41 dimensioned area, aforementioned etendue (Etendue) conservation principle of arranging in pairs or groups in the hope of.
As can be seen here, laser light source module 10 of the present invention, 20, 30, 40 can apply to different optical projection systems 1, 2, 3, 4, no matter it is penetration or reflective, or one chip, or three-chip type, all applicable laser light source module of the present invention, and by light detection module wherein, then can direct-detection its be greater than the energy of system etendue, be the outer part luminous energy of the efficient beam detecting this system, and then the intensity of actual light source can be known, and LASER Light Source 11 can be controlled further, 22, 32, the output power of 42 and reach brightness of its projection of modulation and the object of color.And when optical projection system has many group LASER Light Source, more can regulate and control the light source output power of different group respectively, and then its adjustment reaching different-colour can be made or make optical projection system reach the conforming function of color temperature constant.
In sum, the invention provides a kind of laser light source module being applicable to optical projection system, it adopts LASER Light Source as light source, and there is Wavelength changing element and light detection module, the light beam of first wave length that wherein LASER Light Source is launched by Wavelength changing element converts the light beam that at least one is different from first wave length to, and through being adjacent to the energy that be greater than system etendue of light detection module with the output beam of determined wavelength conversion element of Wavelength changing element, be the outer part luminous energy of the efficient beam detecting this system, and then the result this to be detected is passed to controller, regulate and control with the direct output power to LASER Light Source, and make its brightness exported of laser light source module and colour temperature can do real-time adjustment according to different situations by this, and its brightness and color compensating can be modulated further when LASER Light Source or Wavelength changing element decay, and again because this light detection module is not arranged on system light path, therefore it can not have influence on system brightness, therefore, therefore, the laser light source module being applicable to optical projection system of the present invention can reach effect of systems stabilisation output brightness and its colour temperature of stable maintenance in fact.
Even if the present invention has been described in detail by the above embodiments and can thought by the personage Ren Shi craftsman being familiar with this skill and modify as all, so neither de-if attached claim institute is for Protector.
Claims (10)
1. an optical projection system, comprising:
One laser light source module, comprising:
At least one LASER Light Source, launches the light beam that has first wave length;
At least one Wavelength changing element, the light beam for this being had first wave length converts the light beam that at least one is different from first wave length to;
At least one smooth detection module, comprises at least one optical sensor, and this light detection module is adjacent to this Wavelength changing element; And
One controller, is electrically connected with this light detection module;
At least one photomodulator, receives the light beam of this laser light source module, and is emitted to a few light beam; And
One projection lens, receives this light beam that this photomodulator is launched, and projects an image strip;
Wherein, this optical sensor of this laser light source module is different from the energy being greater than system etendue of the light beam of first wave length in order to this detecting that this Wavelength changing element launches, and according to the result that this optical sensor is monitored, to carry out at least one of them optical modulation or the compensation of the brightness of this laser light source module and color through this controller.
2. optical projection system as claimed in claim 1, wherein this Wavelength changing element optical module that is the static or dynamic rotary that has that at least one phosphor powder combines, and this optical module be penetration and reflective optical module at least one of them.
3. optical projection system as claimed in claim 1, wherein this light detection module is arranged at least one that this Wavelength changing element and this Wavelength changing element launch and is different from one of the light beam of first wave length and limits in angular range.
4. optical projection system as claimed in claim 3, this restriction angular range wherein set by this light detection module is by etendue invariance principle to know by inference, and this angular range limited by effective etendue of this photomodulator.
5. optical projection system as claimed in claim 1, wherein this optical projection system is one of them of a single-panel projection system and a three-panel projection system.
6. optical projection system as claimed in claim 1, wherein this optical projection system also has relay lens group and even group of light, to restrain or to disperse or to change optical path.
7. a laser light source module, is applicable to an optical projection system, comprises:
At least one LASER Light Source, launches the light beam that has first wave length;
At least one Wavelength changing element, the light beam for this being had first wave length converts the light beam that at least one is different from first wave length to;
At least one smooth detection module, comprises at least one optical sensor, and this light detection module is adjacent to this Wavelength changing element; And
One controller, is electrically connected with this light detection module;
Wherein, this optical sensor is different from the energy being greater than system etendue of the light beam of first wave length in order to this detecting that this Wavelength changing element launches, and according to the result that this optical sensor is monitored, to carry out at least one of them optical modulation or the compensation of the brightness of this at least one LASER Light Source and color through this controller.
8. laser light source module as claimed in claim 7, wherein this Wavelength changing element optical module that is the static or dynamic rotary that has that at least one phosphor powder combines, and this element be penetration and reflective optical module at least one of them.
9. laser light source module as claimed in claim 7, wherein this light detection module is arranged at least one that this Wavelength changing element and this Wavelength changing element launch and is different from one of the light beam of first wave length and limits in angular range.
10. laser light source module as claimed in claim 9, this restriction angular range wherein set by this light detection module is by etendue invariance principle to know by inference, and this restriction angular range limited by effective etendue of a photomodulator of this optical projection system.
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| CN201310294011.0A CN104280992A (en) | 2013-07-12 | 2013-07-12 | Projection system and laser light source module suitable for same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310294011.0A CN104280992A (en) | 2013-07-12 | 2013-07-12 | Projection system and laser light source module suitable for same |
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| CN104280992A true CN104280992A (en) | 2015-01-14 |
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| CN201310294011.0A Pending CN104280992A (en) | 2013-07-12 | 2013-07-12 | Projection system and laser light source module suitable for same |
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| CN106125480A (en) * | 2016-08-26 | 2016-11-16 | 海信集团有限公司 | The control method of color temp and device |
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| WO2019127826A1 (en) * | 2017-12-28 | 2019-07-04 | 深圳光峰科技股份有限公司 | Wavelength conversion device, light source device, and projection apparatus |
| CN110554553A (en) * | 2018-05-30 | 2019-12-10 | 宁波舜宇车载光学技术有限公司 | Color regulation control system and method for projection display |
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| CN110888293A (en) * | 2018-09-10 | 2020-03-17 | 深圳光峰科技股份有限公司 | Projection device, and white balance presetting method and implementation method |
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