CN109870872B - Light source system, automatic adjusting method of light source system and projection equipment - Google Patents
Light source system, automatic adjusting method of light source system and projection equipment Download PDFInfo
- Publication number
- CN109870872B CN109870872B CN201711268608.2A CN201711268608A CN109870872B CN 109870872 B CN109870872 B CN 109870872B CN 201711268608 A CN201711268608 A CN 201711268608A CN 109870872 B CN109870872 B CN 109870872B
- Authority
- CN
- China
- Prior art keywords
- light
- laser
- source system
- light source
- brightness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- G03B21/16—Cooling; Preventing overheating
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Abstract
The invention provides a light source system, an automatic adjusting method of the light source system and a projection device.
Description
Technical Field
The invention relates to the field of optics, in particular to a light source system with an automatic adjusting function, an automatic adjusting method of the light source system and projection equipment.
Background
The invention relates to the technical field of optics, in particular to the technical field of display and illumination. In many projection light sources, the excitation light source and the wavelength conversion device are two kinds of light emitting elements, and their emitted lights constitute respective primary lights of the projection light source. For example, blue laser light is used as excitation light of B-primary color light to be excited in the wavelength conversion device, and green and red excited light is generated as R, G-primary color light. However, in the prior art, because the efficiency of the red phosphor is low, it is difficult to satisfy the requirements of high brightness and good color property by using the red phosphor as the R-primary light: the red light color tends to be orange when the brightness is improved, and the brightness is insufficient when the color purity is required to be good. In a light source requiring high brightness and color of R-primary light, a mixture of red laser light and red fluorescent light is generally used as the R-primary light.
During the operation of the light source, the change of the operating power of the light emitting element itself, or the change of the surrounding environment, will cause the operating temperature of the light emitting element to change, so that the output spectrum of the light emitting element changes, for example: the peak wavelength of the laser drifts, and the fluorescence spectrum emitted by the excited fluorescent powder changes. Thus, the spectrum and color of the output light will change, affecting the display and illumination effect. For the scheme of adopting the red laser and the red fluorescent light to be mixed as the light of the R primary color, the influence of the temperature change on the output light is more obvious.
Therefore, there is a need for an improvement of such a light source, and a light source system and an automatic adjusting method and a projection apparatus having an automatic adjusting function for maintaining stable output light are provided to solve the above problems.
Disclosure of Invention
The invention provides a light source system, an automatic adjusting method thereof and a projection device, which can ensure the stability of the color and the brightness of output light, ensure the display effect and have good user experience.
In order to solve the technical problems, the invention adopts a technical scheme that: there is provided a light source system comprising:
the laser device comprises at least one first laser device and at least one second laser device, wherein the first laser device emits first excitation light, and the second laser device emits second excitation light;
the second excitation light emitted by the second laser generates first excitation light and second stimulated light serving as G primary color light through the time sequence of the wavelength conversion device, transmits a part of the second excitation light to form B primary color light, and the first excitation light and the first stimulated light are mixed according to a metamerism principle to form R primary color light;
the detection device is used for detecting the brightness and the color coordinates of the first excited light;
and the control module is used for adjusting the brightness and the color coordinate of the first exciting light according to the change of the brightness and the color coordinate of the first excited light so as to keep the brightness and the color coordinate of the R-primary light stable.
Preferably, the detecting device is a brightness detecting device for directly detecting the brightness and color coordinates of the first laser beam.
Preferably, the detection device is a temperature detection device, and is configured to detect a temperature on the wavelength conversion device, and determine a variation trend of the luminance and the color coordinate of the first excitation light according to a temperature variation, and the control module maintains the luminance and the color coordinate of the R-primary light to be stable according to the variation trend of the luminance and the color coordinate of the first excitation light.
Preferably, the first laser is a red laser, and the first excitation light is red laser; the second laser is a blue laser, and the second excitation light is blue laser.
Preferably, the wavelength conversion device includes a color wheel coated with at least two kinds of phosphor, the blue laser excites red fluorescence and green fluorescence in time sequence through the wavelength conversion device, and the G-primary color light is green fluorescence.
Preferably, the color wheel is coated with red phosphor and green phosphor which are irradiated by excitation light at a time sequence, and the blue laser excites red phosphor and green phosphor at a time sequence through the color wheel.
Preferably, when the brightness of the first exciting light is reduced and the color coordinate shifts to the short-wave direction, the control module controls to increase the working current of the red laser and/or controls to reduce the temperature of the light source system; when the brightness of the first exciting light rises and the color coordinate shifts to the long-wave direction, the control module controls to reduce the working current of the red laser and/or controls to increase the temperature of the light source system.
Preferably, the color wheel is coated with yellow phosphor and green phosphor which are irradiated by excitation light at a time sequence, the blue laser excites yellow fluorescence and green fluorescence at a time sequence through the color wheel, the wavelength conversion device further comprises a modification sheet arranged on a yellow fluorescence light path, and the yellow fluorescence forms red fluorescence through the modification sheet.
Preferably, when the brightness of the first excitation light rises and the color coordinate shifts to the long-wave direction, the control module controls to reduce the working current of the red laser and/or controls to reduce the temperature of the light source system; when the brightness of the first exciting light is reduced and the color coordinate is deviated to the short-wave direction, the control module controls to increase the working current of the red laser and/or controls to increase the temperature of the light source system.
Preferably, the light source system further includes a heat sink for receiving the control signal of the control module and adjusting the temperature of the light source system.
Preferably, the temperature detection means comprises a temperature sensor provided on any one or more of the red laser, the second laser or the wavelength conversion means.
Preferably, the light source system includes a reflector disposed on a light path of the R primary light, the B primary light, and the G primary light, and configured to change a direction of the light path to form output light, and the brightness detection device is disposed behind the reflector and configured to detect a part of the R primary light, the B primary light, and the G primary light that are transmitted through the reflector.
Preferably, the light source system further includes a light splitter disposed on the light path of the first laser and the light path of the second laser, and the second excitation light and the first excitation light are converged onto the wavelength conversion device through the light splitter.
Preferably, the light source system further includes a positive lens for adjusting the light path, a collecting lens and an output lens, the positive lens is disposed between the beam splitter and the wavelength conversion device, and the collecting lens and the output lens are disposed on a side of the wavelength conversion device away from the laser.
In order to solve the above technical problems, the present invention further provides a technical solution: there is provided a projection device comprising a light source system as described above.
In order to solve the above technical problems, the present invention further provides a technical solution: the automatic adjustment method of the light source system is provided, the light source system is adopted, and the method comprises the following steps:
the control module detects the brightness and color coordinates of the first excited light;
the control module controls and adjusts the temperature of the light source system and/or the working current of the red laser by utilizing the metamerism principle according to the preset value so as to maintain the stability of the brightness and the color coordinates of the R primary color light.
Preferably, the red fluorescent light is formed by exciting red fluorescent powder by exciting light emitted by the second laser, and when the brightness of the first excited light is reduced and the color coordinate is deviated to the short-wave direction, the control module controls to increase the working current of the red laser and/or controls to reduce the temperature of the light source system; on the contrary, the control module controls to reduce the working current of the red laser and/or controls to increase the temperature of the light source system.
Preferably, the red fluorescence is formed by a yellow fluorescence modified sheet formed by exciting red fluorescent powder by exciting excitation light emitted by the second laser, and when the brightness of the first excited light is increased and the color coordinate is deviated to the long-wave direction, the control module controls to reduce the working current of the red laser and/or controls to reduce the temperature of the light source system; and conversely, the control module controls to increase the working current of the red laser and/or controls to increase the system temperature of the light source system.
Preferably, the control module stores in advance a data table in which the brightness and color coordinates of the red fluorescent light corresponding to the R-primary light at different brightness and color coordinates and the current and temperature of the first laser are set, and the control module looks up the contents in the data table according to the temperature measurement value of the light source system, the brightness measurement value of the R-primary light, and the color coordinate of the R-primary light to determine the theoretical values of the current and temperature of the first laser, and correspondingly adjusts the current of the first laser and the temperature of the light source system.
The invention has the beneficial effects that: different from the prior art, the invention provides a light source system, an automatic adjusting method of the light source system and a projection device, wherein a control module of the light source system adjusts the brightness and the color coordinate of first exciting light according to the change of the brightness and the color coordinate of first excited light, so that the brightness and the color coordinate of R-primary light are kept stable, the output of the light source system is stable, the display effect of the projection device is ensured, and good user experience is achieved.
Drawings
FIG. 1 is a schematic diagram of a light source system according to the present invention;
FIG. 2 is a spectrum of blue laser light of the light source system of the present invention exciting the phosphor to produce green and red fluorescence;
FIG. 3 is a spectrum of the spectrum of FIG. 2 mixed with a red laser;
FIG. 4 is a graph of the spectrum of FIG. 3 after a temperature rise;
fig. 5 is a graph of the spectrum of fig. 4 after adjustment.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The invention provides a light source system with automatic adjusting function and stable output light, an automatic adjusting method thereof and a projection device using the light source system, which are described in the following with specific embodiments:
example one
Referring to fig. 1, the light source system of the present invention includes a laser 1, a wavelength conversion device 2, a detection device, a reflector 5, and a control module.
The laser 1 is used for emitting excitation light, and specifically includes a first laser 11 and a second laser 12. The first laser 11 is configured to emit first excitation light, specifically, in this embodiment, the first laser 11 is a red laser, the first excitation light is a red laser, and the second laser 12 emits second excitation light, specifically, in this embodiment, a blue laser, and emits blue laser. In this embodiment, there is one first laser 11 and one second laser 12, but in fact, the number and the kind of the lasers are not limited to this, and a plurality of lasers may be provided, or other types of lasers may be provided, and the embodiment is also possible.
The detection means includes a temperature detection means 3 and a brightness detection means 4. The temperature detection device 3 includes a temperature sensor disposed on any one or more of the first laser 11, the second laser 12, or the wavelength conversion device 2, and is used for detecting temperature changes of each part of the light source system.
The light source system further comprises a light splitting sheet 6 arranged on light paths of the first laser 11 and the second laser 12, and red laser light emitted by the first laser 11 is reflected by the light splitting sheet 6; the second laser 12, specifically, the blue laser emitted from the blue laser in the present embodiment, is transmitted through the beam splitter 6, and the light paths of the blue laser and the red laser passing through the beam splitter 6 are overlapped and converged on the wavelength converter 2.
The wavelength conversion device 2 is specifically a color wheel coated with at least two kinds of phosphors in the present embodiment, specifically, in the present embodiment, the wavelength conversion device 2 is coated with yellow phosphor and green phosphor, and in the working state, the color wheel rotates at a constant speed, and the two kinds of phosphors are irradiated by exciting light in a time sequence. The blue laser light passes through the color wheel to generate yellow fluorescence and green fluorescence, and a part of the blue laser light is transmitted. The wavelength conversion device 2 further includes a modification sheet disposed on the light path of the yellow fluorescence, which forms red fluorescence by the modification sheet.
Specifically, during the use process, the blue laser continuously emits blue laser, red fluorescence and green fluorescence are excited in a time sequence, and a part of the blue laser is transmitted. Wherein the green fluorescence is used as the G-primary light, and the transmitted blue laser is used as the B-primary light. The first laser 11 emits red laser light only when the wavelength conversion device 2 emits red fluorescence, and at this time, the red fluorescence is mixed with the red laser light to obtain R-primary color light.
A positive lens 7 for adjusting the light path to converge light is further disposed between the wavelength conversion device 2 and the spectroscope 6. Further, a collecting lens 8 and an output lens 9 for adjusting the optical path are further provided after the wavelength conversion device 2. The excitation light is converged on the reflector 5 through the collecting lens 8 and the output lens 9 after passing through the wavelength conversion device 2, and forms emergent light after being reflected by the reflector 5. Part of light transmitted by emergent light when passing through the reflector 5 enters the brightness detection device 4, the reflectivity of the actual reflector is about 99%, and the 1% of transmitted light enters the brightness detection device 4 to measure the brightness and illumination of the output light, so that the light combination detection can be realized.
During normal operation, the light source system can emit R, G, B tricolor light in time sequence, and during color brightness correction, the deflecting reflector reflects the tricolor light into the sensor in sequence to obtain the brightness and spectrum of each tricolor light. When the external environment changes or the working current of the laser changes, the working temperature of the laser inevitably changes, thereby causing the spectrum to shift. Meanwhile, the temperature of the color wheel also changes with the intensity of the blue laser.
In order to ensure that the luminance and color coordinates of the spectrum of the emitted light, especially the R-primary light formed by mixing the red fluorescent light and the red laser light, are stable, the control module typically adjusts the luminance and color coordinates of the first excitation light according to the variation of the luminance and color coordinates of the first stimulated light, so that the luminance and color coordinates of the R-primary light are maintained stable.
The detection mode of the brightness and color coordinates of the first excited light can be directly measured by adopting the brightness detection device 3, and the temperature of the light source system can also be detected by the temperature detection device, so that the change trend of the brightness and color coordinates of the first excited light can be judged according to the temperature change.
The control module receives the results of the brightness detection device 4 and the temperature detection device 3, and adjusts the working current of the first laser 11 or controls and adjusts the temperature of the light source system according to the principle of metamerism. Wherein the control module can be a micro-processing unit or a singlechip. Further, the light source system also comprises a heat dissipation device for receiving the control signal of the control module and adjusting the temperature of the light source system. In alternative embodiments, other adjustable temperature adjusting devices, such as a unidirectional temperature adjusting device or a bidirectional temperature adjusting device, may be implemented.
The automatic adjustment mode of the light source system of the present embodiment includes the steps of:
the control module detects the brightness and color coordinates of the first excited light;
the control module controls and adjusts the temperature of the light source system and/or the working current of the red laser by utilizing the metamerism principle according to the preset value so as to maintain the stability of the brightness and the color coordinates of the R primary color light.
The detection mode of the brightness and color coordinates of the first excited light can be directly measured by adopting the brightness detection device 3, and the temperature of the light source system can also be detected by the temperature detection device, so that the change trend of the brightness and color coordinates of the first excited light can be judged according to the temperature change.
When the temperature detection device detects the temperature rise of the light source system and/or the brightness detection device detects the brightness rise of the first receiving laser, and the color coordinate deviates to the long wave direction to cause the color to be red, the control module controls to reduce the working current of the red laser and/or controls to reduce the temperature of the light source system; when the temperature detection device detects that the temperature of the light source system is reduced and/or the brightness detection device detects that the brightness of the first excited light is reduced, and the color coordinate deviates to the short wave direction to cause the color to be yellow, the control module controls and improves the working current of the red laser.
It should be noted that the adjustment of the operating current of the red laser and the adjustment of the temperature of the light source system may be performed simultaneously, or may be performed only by one of them, both of which may achieve the purpose of adjustment. The temperature adjustment of the light source system, preferably the temperature of the red laser is used as the adjustment standard, because the operating temperature of the red laser influences the spectral shift of the red laser and is the main factor influencing the stability of the R-primary light.
The following description is made of the specific adjustment principle with reference to the accompanying drawings:
as shown in fig. 2, a spectrum of the blue laser light exciting the yellow phosphor and the green phosphor to generate the red fluorescence and the green fluorescence in the present embodiment is shown in fig. 3, which is a spectrum of the mixture of the red laser light. R1、(x1，y1) Representing the brightness and color coordinates of the red fluorescence, R2、(x2，y2) Representing the brightness and color coordinates, R, of the red laser light0、(x0，y0) The luminance and color coordinates representing the designed values of the R primary light are:
R0＝R1+R2
as shown in fig. 4, when the operating temperature increases due to the change of the external environment or the change of the operating current of the laser, the spectrum of the red fluorescence shifts toward the long-wave direction, and the brightness and color coordinate of the shifted red fluorescence are R1、(x′1，y′1) Then, there are:
R′1＞R1
x′1＞x1
y′1＜y1
the luminance and color coordinates of the R-based color light at this time are R'0(x′0，y′0) At this time:
R′0＞R0
x′0＞x0
y′0＜y0
in order to maintain the stability of the R-primary color light, the brightness and color coordinates of the R-primary color light are maintained at design values so that the adjusted R-primary color light satisfies R'0＝R0，x′0＝x0，y′0＝y0Then, the brightness and color coordinates of the red laser should be adjusted to satisfy:
R′2＜R2
x′2＜x2
y′2＞y2
specifically, in this embodiment, the temperature of the light source system is reduced by reducing the operating current of the red laser or controlling the heat dissipation device to dissipate heat. As shown in fig. 5, the adjusted spectrogram realizes the stability of R-primary light by using metamerism principle and through the correction of red laser.
According to the adjustment principle, further, in practical application, each working state of the light source system can be tested during design, and the following results are obtained in each working state: the luminance and color coordinates of the red fluorescence and the operating current and temperature of the red laser light correspond to each other in order to maintain the combined light of the red fluorescence and the red laser light at predetermined luminance and color coordinates. Data tables forming the brightness and color coordinates of the red fluorescent light corresponding to the R-primary color light at different brightness and color coordinates, and the current and temperature of the red laser are stored in the control module. As shown in the following table:
TABLE 1
When the light source system is automatically adjusted, the control module calls the contents in the lookup data table to determine the theoretical values of the working current and the temperature of the first laser 11 according to the temperature measurement value of the light source system, the brightness measurement value of the R primary color light and the color coordinate of the R primary color light, and correspondingly adjusts the working current and the temperature of the first laser 11, so that the automatic adjustment of the light source system can be completed. Thus, the speed and efficiency of the automatic adjustment of the light source system can be further improved, and the reliability of the adjustment can be improved.
In the present embodiment, the combination of the red laser and the red fluorescence with the R primary color light is taken as an example for explanation, and the present invention is not limited thereto, and in fact, the light source system and the automatic detection method of the present invention can be applied to any combination of the laser light and the fluorescence light of any color based on the metamerism principle, and the aspect of the present invention can be applied.
Example two
The present embodiment is an improvement of the first embodiment, and is substantially the same as the first embodiment except that in the present embodiment, the R fluorescence used for the R primary color light is formed by exciting the red phosphor with the excitation light emitted from the second laser.
Since red fluorescence is directly generated by exciting red fluorescence with excitation light, when the ambient environment changes or the working temperature rises, the whole spectrum shifts to the short-wave direction when the temperature rises, so that the brightness is reduced and the color is yellow.
In the embodiment, when the temperature detection device detects 3 that the temperature of the light source system rises and/or the brightness detection device 4 detects that the brightness of the first receiving laser decreases, and the color coordinate shifts to the short-wave direction to cause the color to be yellow, the control module controls to increase the working current of the red laser and/or controls to decrease the temperature of the light source system; when the temperature sensing device 3 detects that the temperature of the light source system is reduced and/or the brightness detection device 4 detects that the brightness of the first receiving laser is increased and the color coordinate is deviated to the long wave direction, the color is deviated to red, and the control module controls and reduces the working current of the red laser.
The two embodiments are based on the principle that the working current and the system temperature of the laser are adjusted according to the metamerism to maintain the brightness and the color coordinate stability of the R primary light, and the specific adjusting methods are slightly different according to the different sources of the red fluorescence light forming the R primary light, and the specific adjusting methods can be summarized as the following table:
TABLE 2
The invention has the beneficial effects that: different from the prior art, the invention provides a light source system, an automatic adjusting method of the light source system and a projection device, wherein a control module of the light source system adjusts the brightness and the color coordinate of first exciting light according to the change of the brightness and the color coordinate of first excited light, so that the brightness and the color coordinate of R-primary light are kept stable, the output of the light source system is stable, the display effect of the projection device is ensured, and good user experience is achieved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A light source system, comprising:
the laser device comprises at least one first laser device and at least one second laser device, wherein the first laser device emits first excitation light, and the second laser device emits second excitation light;
the second excitation light emitted by the second laser generates first excitation light and second stimulated light serving as G primary color light through the time sequence of the wavelength conversion device, transmits a part of the second excitation light to form B primary color light, and the first excitation light and the first stimulated light are mixed according to a metamerism principle to form R primary color light;
the detection device is used for detecting the brightness and the color coordinates of the first excited light;
and the control module is used for adjusting the brightness and the color coordinate of the first exciting light according to the change of the brightness and the color coordinate of the first excited light so as to keep the brightness and the color coordinate of the R-primary light stable.
2. The light source system according to claim 1, wherein the detecting device is a brightness detecting device for directly detecting the brightness and color coordinates of the first stimulated light or a temperature detecting device for detecting the temperature on the wavelength conversion device, and the temperature detecting device determines the trend of the brightness and color coordinates of the first stimulated light according to the temperature change, and maintains the brightness and color coordinates of the R-primary light stable.
3. The light source system of claim 1, wherein the first laser is a red laser, and the first excitation light is a red laser; the second laser is a blue laser, the second exciting light is a blue laser, the wavelength conversion device comprises a color wheel coated with at least two kinds of fluorescent powder, the blue laser is excited to emit red fluorescence and green fluorescence through the time sequence of the wavelength conversion device, and the G-primary color light is green fluorescence.
4. The light source system of claim 3, wherein the color wheel is coated with red phosphor and green phosphor which are irradiated by excitation light in a time sequence, the blue laser excites red phosphor and green phosphor in a time sequence through the color wheel, and when the brightness of the first excitation light is reduced and the color coordinate is shifted to the short-wave direction, the control module controls to increase the working current of the red laser and/or controls to decrease the temperature of the light source system; when the brightness of the first exciting light rises and the color coordinate shifts to the long-wave direction, the control module controls to reduce the working current of the red laser and/or controls to increase the temperature of the light source system.
5. The light source system of claim 3, wherein the color wheel is coated with yellow phosphor and green phosphor which are irradiated by the excitation light in a time sequence, the blue laser excites the yellow phosphor and the green phosphor in a time sequence through the color wheel, the wavelength conversion device further comprises a modification sheet arranged on a path of the yellow phosphor, the yellow phosphor forms red phosphor through the modification sheet, and when the brightness of the first excitation light rises and the color coordinate shifts to the long-wave direction, the control module controls to reduce the working current of the red laser and/or controls to reduce the temperature of the light source system; when the brightness of the first exciting light is reduced and the color coordinate is deviated to the short-wave direction, the control module controls to increase the working current of the red laser and/or controls to increase the temperature of the light source system.
6. The light source system according to claim 2, further comprising a heat sink for receiving the control signal of the control module and adjusting the temperature of the light source system, wherein the temperature detection device comprises a temperature sensor disposed on any one or more of the first laser, the second laser or the wavelength conversion device.
7. The light source system according to claim 2, wherein the light source system includes a plurality of light sources arranged on an optical path of the R primary light, the B primary light, and the G primary light, and the light path direction is changed to form a reflector for outputting light, after the brightness detection device is arranged on the reflector, used for detecting a part of R primary light, B primary light and G primary light which are transmitted after passing through the reflector, the light source system further includes a beam splitter disposed in the optical path of the first laser and the second laser, the second excitation light and the first excitation light are converged on the wavelength conversion device through the light splitter, the light source system further comprises a positive lens for adjusting the light path, a collecting lens and an output lens, the positive lens is arranged between the light splitting sheet and the wavelength conversion device, the collecting lens and the output lens are arranged on the side of the wavelength conversion device far away from the laser.
8. A projection device comprising a light source system as claimed in any one of claims 1 to 7.
9. A method for automatically adjusting a light source system, wherein the light source system according to any one of claims 1 to 7 is used, comprising the steps of:
the control module detects the brightness and color coordinates of the first excited light;
the control module controls and adjusts the temperature of the light source system and/or the working current of the red laser by utilizing the metamerism principle according to the preset value so as to maintain the stability of the brightness and the color coordinate of the R primary color light, and the specific adjusting method comprises the following steps:
when the red fluorescent light is formed by exciting red fluorescent powder by exciting light emitted by the second laser, when the brightness of the first excited light is reduced and the color coordinate is deviated to the short wave direction, the control module controls to increase the working current of the red laser and/or controls to reduce the temperature of the light source system; on the contrary, the control module controls to reduce the working current of the red laser and/or controls to increase the temperature of the light source system;
when the red fluorescence is formed by a yellow fluorescence formed by exciting red fluorescent powder by exciting light emitted by a second laser and is formed by a modification sheet, when the brightness of the first excited light is increased and the color coordinate deviates to the long-wave direction, the control module controls to reduce the working current of the red laser and/or controls to reduce the temperature of a light source system; and conversely, the control module controls to increase the working current of the red laser and/or controls to increase the system temperature of the light source system.
10. The method as claimed in claim 9, wherein the control module stores a data table of the brightness and color coordinates of the red fluorescent light corresponding to the R-primary light with different brightness and color coordinates and the current and temperature of the first laser in advance, and the control module determines theoretical values of the current and temperature of the first laser by looking up contents in the data table according to the temperature measurement value of the light source system, the brightness measurement value of the R-primary light and the color coordinate of the R-primary light, and adjusts the current of the first laser and the temperature of the light source system correspondingly.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711268608.2A CN109870872B (en) | 2017-12-05 | 2017-12-05 | Light source system, automatic adjusting method of light source system and projection equipment |
| PCT/CN2018/071452 WO2019109451A1 (en) | 2017-12-05 | 2018-01-04 | Light source system, automatic adjustment method for light source system, and projection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711268608.2A CN109870872B (en) | 2017-12-05 | 2017-12-05 | Light source system, automatic adjusting method of light source system and projection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109870872A CN109870872A (en) | 2019-06-11 |
| CN109870872B true CN109870872B (en) | 2021-02-26 |
Family
ID=66750042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711268608.2A Active CN109870872B (en) | 2017-12-05 | 2017-12-05 | Light source system, automatic adjusting method of light source system and projection equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109870872B (en) |
| WO (1) | WO2019109451A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112859498B (en) * | 2019-11-28 | 2022-07-12 | 中强光电股份有限公司 | Illumination device, projection system and operation method thereof |
| CN114253058A (en) * | 2020-09-21 | 2022-03-29 | 青岛海信激光显示股份有限公司 | Laser projection equipment, heat dissipation method and heat dissipation device of laser projection equipment |
| CN114613253B (en) * | 2020-12-09 | 2024-01-23 | 极米科技股份有限公司 | Optical system and display device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101217840A (en) * | 2007-12-29 | 2008-07-09 | 友达光电股份有限公司 | Color controlling method of LED light source system |
| CN101471050A (en) * | 2007-12-27 | 2009-07-01 | 财团法人工业技术研究院 | System and method for stabilizing wavelength of led radiation in backlight module |
| CN102072766A (en) * | 2010-12-14 | 2011-05-25 | 广东威创视讯科技股份有限公司 | Device and method for detecting brightness decay degree of bulb of projector |
| CN102252982A (en) * | 2011-04-29 | 2011-11-23 | 安徽皖仪科技股份有限公司 | Wavelength drift compensation method for laser gas analyzer |
| CN103425441A (en) * | 2012-05-17 | 2013-12-04 | 中国长城计算机深圳股份有限公司 | Computer and display debug system thereof |
| CN103813580A (en) * | 2012-11-09 | 2014-05-21 | 深圳市光峰光电技术有限公司 | Adjusting method and adjusting device for color coordinates of light source emergent light |
| CN204595412U (en) * | 2014-12-08 | 2015-08-26 | 深圳市光峰光电技术有限公司 | Light-emitting device and optical projection system |
| CN105547456A (en) * | 2015-12-24 | 2016-05-04 | 华北电力大学 | Cross-correlation temperature compensating method of PS-FBG ultrasonic detection system |
| CN105676577A (en) * | 2016-03-07 | 2016-06-15 | 海信集团有限公司 | Light source device and laser projection display equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854733B (en) * | 2012-08-06 | 2015-06-24 | 深圳市绎立锐光科技开发有限公司 | Light-emitting device and relevant projection system |
| CN106154715B (en) * | 2015-04-09 | 2018-12-11 | 深圳市光峰光电技术有限公司 | Splicing display device and tiled display control method |
| CN106200229B (en) * | 2015-05-04 | 2019-01-08 | 深圳市光峰光电技术有限公司 | Splicing display device and tiled display control method |
| CN106950786B (en) * | 2016-01-07 | 2019-05-03 | 深圳光峰科技股份有限公司 | Light source module group and its light source control method, optical projection system |
-
2017
- 2017-12-05 CN CN201711268608.2A patent/CN109870872B/en active Active
-
2018
- 2018-01-04 WO PCT/CN2018/071452 patent/WO2019109451A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101471050A (en) * | 2007-12-27 | 2009-07-01 | 财团法人工业技术研究院 | System and method for stabilizing wavelength of led radiation in backlight module |
| CN101217840A (en) * | 2007-12-29 | 2008-07-09 | 友达光电股份有限公司 | Color controlling method of LED light source system |
| CN102072766A (en) * | 2010-12-14 | 2011-05-25 | 广东威创视讯科技股份有限公司 | Device and method for detecting brightness decay degree of bulb of projector |
| CN102252982A (en) * | 2011-04-29 | 2011-11-23 | 安徽皖仪科技股份有限公司 | Wavelength drift compensation method for laser gas analyzer |
| CN103425441A (en) * | 2012-05-17 | 2013-12-04 | 中国长城计算机深圳股份有限公司 | Computer and display debug system thereof |
| CN103813580A (en) * | 2012-11-09 | 2014-05-21 | 深圳市光峰光电技术有限公司 | Adjusting method and adjusting device for color coordinates of light source emergent light |
| CN204595412U (en) * | 2014-12-08 | 2015-08-26 | 深圳市光峰光电技术有限公司 | Light-emitting device and optical projection system |
| CN105547456A (en) * | 2015-12-24 | 2016-05-04 | 华北电力大学 | Cross-correlation temperature compensating method of PS-FBG ultrasonic detection system |
| CN105676577A (en) * | 2016-03-07 | 2016-06-15 | 海信集团有限公司 | Light source device and laser projection display equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019109451A1 (en) | 2019-06-13 |
| CN109870872A (en) | 2019-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11022870B2 (en) | Fluorescent light source device | |
| EP1794811B1 (en) | Illumination system | |
| JP5676595B2 (en) | Projection display apparatus and projection display method | |
| CN107615886B (en) | Lighting device, projector, display system and light source adjusting method | |
| JP4417784B2 (en) | Light emitting device and display device | |
| JP6519970B2 (en) | Image display apparatus, projector and control method thereof | |
| CN109870872B (en) | Light source system, automatic adjusting method of light source system and projection equipment | |
| EP2683160B1 (en) | Light source apparatus and image projection apparatus | |
| KR20090051262A (en) | Generating light by color mixing | |
| JP2012248545A (en) | Led light module with calibration function | |
| CN106990654B (en) | Projector and control method of projector | |
| CN106842784B (en) | A kind of optical projection system and projecting method | |
| JP5593703B2 (en) | Projector and method for adjusting color balance of projected image in projector | |
| KR20160019177A (en) | Projector with phosphor wheel and color wheel in one module | |
| JP2005340809A (en) | Light emitting device, light emitting system, and control method therefor | |
| CN110597001A (en) | Automatic control method and system for white balance of RGB laser projector | |
| JP2015057671A (en) | Projection type display device and projection display method | |
| TWI397192B (en) | White light led | |
| JP5541175B2 (en) | Light source device using fluorescent material | |
| US10295135B2 (en) | Light module, headlight/spotlight and method for providing polychromatic light | |
| CN218446355U (en) | Light source system and projection equipment | |
| US10798348B2 (en) | Light source apparatus, projection type display device and light source control method | |
| US20150092192A1 (en) | Lighting device comprising measuring device and method for operating the lighting device | |
| JP6699189B2 (en) | Projector and projector control method | |
| JP2016161738A (en) | Light source device, projector, and color balance adjustment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |