CN211909261U - Light source driving system and projection system - Google Patents
Light source driving system and projection system Download PDFInfo
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- CN211909261U CN211909261U CN202021010796.6U CN202021010796U CN211909261U CN 211909261 U CN211909261 U CN 211909261U CN 202021010796 U CN202021010796 U CN 202021010796U CN 211909261 U CN211909261 U CN 211909261U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model provides a light source driving system and projection system, include: a current control device and a light emitting device; the current control device is connected with the light-emitting device and used for detecting light elements of the current picture to be displayed and generating RGB control current according to the light elements so as to control the light-emitting device to emit light through the RGB control current and further obtain the target display picture. The utility model discloses an among the light source actuating system, illuminator can give out light according to current control device's real time control, has reduced illuminator's radiating pressure, and in addition, current control device carries out real time control to illuminator according to the light element of waiting to display the picture at present, has improved the display effect of waiting to display the picture, has alleviated current light source drive illuminator's mode in, illuminator's radiating pressure is big, the poor technical problem of dark picture display effect.
Description
Technical Field
The utility model belongs to the technical field of digital projection's technique and specifically relates to a light source driving system and projection system are related to.
Background
Currently, most of the projection systems on the market output a fixed current to the light emitting device during projection, and display a picture by light emitted from the light emitting device.
In the above-described manner of driving the light emitting device by the light source, the light emitting device is always in a load state, and the heat dissipation pressure increases due to long-time operation, and the use efficiency of the light source is low. In addition, when a dark image display is required, a large part of light of the light-emitting device is still emitted, which affects the display effect of the dark image.
In summary, in the conventional light source driving light emitting device, the heat dissipation pressure of the light emitting device is large, and the dark image display effect is poor.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a light source driving system and a projection system, so as to alleviate the technical problems of large heat dissipation pressure of a light emitting device and poor dark image display effect in the conventional light source driving light emitting device.
In a first aspect, an embodiment of the present invention provides a light source driving system, including: a current control device and a light emitting device;
the current control device is connected with the light-emitting device and used for detecting light elements of a current picture to be displayed and generating RGB control current according to the light elements so as to control the light-emitting device to emit light through the RGB control current and further obtain a target display picture.
Further, the current control device includes: a picture detector and a light source driver;
the picture detector is connected with the light source driver and used for detecting light elements of the current picture to be displayed and generating RGB control signals according to the light elements;
the light source driver is connected with the light-emitting device and used for receiving the RGB control signals sent by the picture detector and generating RGB control currents according to the RGB control signals so as to input the generated RGB control currents to the light-emitting device.
Further, still include: a filter;
the optical filter is connected with the light-emitting device and is used for filtering original light emitted by the light-emitting device to obtain optical elements of the current picture to be displayed;
the optical filter is also connected with the picture detector and is used for sending the optical elements of the current picture to be displayed to the picture detector;
the light filter is also used for filtering the light emitted by the light-emitting device to obtain the light elements of the target display picture.
Further, still include: a power source;
the power supply is connected with the light source driver and used for supplying power to the light source driver.
Further, the picture detector includes: and a video image processing chip.
Further, the light source driver includes: constant current source control panel.
Further, the RGB control signals include: RGB three-color PWM pulse width modulation signals.
Further, still include: a housing;
the picture detector, the light source driver, the light emitting device and the filter are disposed in the housing.
Further, an indicator light is arranged on the shell.
In a second aspect, an embodiment of the present invention further provides a projection system, where the projection system includes the light source driving system of any one of the above first aspects, and further includes: a display chip;
the display chip is connected with the optical filter in the light source driving system and used for displaying a target display picture according to optical elements of the target display picture.
In an embodiment of the present invention, the light source driving system includes: a current control device and a light emitting device; the current control device is connected with the light-emitting device and used for detecting light elements of the current picture to be displayed and generating RGB control current according to the light elements so as to control the light-emitting device to emit light through the RGB control current and further obtain the target display picture. According to the above description, the utility model discloses an among the light source actuating system, light emitting device can give out light according to current control device's real time control, has reduced light emitting device's heat dissipation pressure, and in addition, current control device carries out real time control to light emitting device according to waiting to show the light element of picture at present, has improved the display effect of waiting to show the picture, has alleviated among current light source drive light emitting device's the mode, and light emitting device's heat dissipation pressure is big, the poor technical problem of dark picture display effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a light source driving system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another light source driving system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another light source driving system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a complete light source driving system according to an embodiment of the present invention.
Icon: 11-current control means; 12-a light emitting device; 13-a filter; 14-a power supply; 111-picture detector; 112-light source driver.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
To facilitate understanding of the present embodiment, a detailed description will be given of a light source driving system disclosed in an embodiment of the present invention.
The first embodiment is as follows:
fig. 1 is a schematic structural diagram of a light source driving system according to an embodiment of the present invention, as shown in fig. 1, the light source driving system includes: a current control device 11 and a light emitting device 12;
the current control device 11 is connected to the light emitting device 12, and is configured to detect a light element of a current picture to be displayed, and generate RGB control currents according to the light element, so as to control the light emitting device 12 to emit light through the RGB control currents, thereby obtaining a target display picture.
In the embodiment of the present invention, the light emitting device 12 can be a three-color light source such as laser RGB or a three-color light source such as LED RGB, and the light emitted therefrom is a mixed light containing elements such as red, green, blue and white.
In an embodiment of the present invention, the light source driving system includes: a current control device 11 and a light emitting device 12; the current control device 11 is connected to the light emitting device 12, and is configured to detect a light element of a current picture to be displayed, and generate RGB control currents according to the light element, so as to control the light emitting device 12 to emit light through the RGB control currents, thereby obtaining a target display picture. It can be known through the above description that in the light source driving system of the utility model, light emitting device 12 can give out light according to current control device 11's real time control, the heat dissipation pressure of light emitting device 12 has been reduced, in addition, current control device 11 carries out real time control to light emitting device 12 according to the light element of waiting to display the picture at present, the display effect of waiting to display the picture has been improved, in the mode of having alleviated current light source drive light emitting device 12, light emitting device 12's heat dissipation pressure is big, the poor technical problem of dark picture display effect.
The above description briefly introduces the structure of the light source driving system of the present invention, and the details thereof are described in detail below.
In an alternative embodiment of the present invention, referring to fig. 2, the current control device 11 includes: a picture detector 111 and a light source driver 112;
the image detector 111 is connected to the light source driver 112, and is configured to detect light elements of an image to be displayed currently, and generate RGB control signals according to the light elements;
the light source driver 112 is connected to the light emitting device 12, and is configured to receive the RGB control signals sent by the picture detector 111, and generate RGB control currents according to the RGB control signals, so as to input the generated RGB control currents to the light emitting device 12.
In the embodiment of the present invention, the image detector 111 can be a video image processing chip for detecting the light element of the current image to be displayed, and generating the RGB control signal according to the light element. Specifically, the image detector 111 matches the light elements with a color mixing database of an RGB three-primary-color mixing algorithm, obtains red light luminous flux, green light luminous flux, and blue light luminous flux required by the current image to be displayed according to the matching result, and further, the image detector 111 calculates RGB driving currents according to a relationship curve between the luminous flux and the driving currents, converts the RGB driving currents into RGB three-color PWM pulse width modulation signals (i.e., RGB control signals), and sends the RGB control signals to the light source driver 112.
Specifically, the light source driver 112 may be a constant current source control board, which can output three sets of currents in a constant state. The working process is as follows: the light source driver 112 generates RGB control currents according to the RGB control signals to input the generated RGB control currents to the light emitting device 12.
The purpose of dynamically adjusting the power supply state of the light-emitting device 12 is achieved through the above process.
In an optional embodiment of the present invention, referring to fig. 3, the light source driving system further includes: a filter 13;
the optical filter 13 is connected to the light emitting device 12, and is configured to filter the original light emitted by the light emitting device 12 to obtain light elements of a current to-be-displayed picture;
the filter 13 is further connected to the picture detector 111, and is configured to send light elements of a picture to be currently displayed to the picture detector 111;
the filter 13 is also used for filtering the light emitted by the light emitting device 12 to obtain the light elements of the target display screen.
In the embodiment of the present invention, the filter 13 can filter the organic mixed light into RGBY and other color lights.
In an optional embodiment of the present invention, referring to fig. 4, the light source driving system further includes: a power supply 14;
the power supply 14 is connected to the light source driver 112 for supplying power to the light source driver 112.
In an optional embodiment of the present invention, the light source driving system further includes: a housing;
the picture detector 111, the light source driver 112, the light emitting device 12, and the filter 13 are disposed in the housing.
Specifically, an indicator light is arranged on the housing and used for indicating the working state of the light source driving system. For example, when the picture detector 111 cannot detect the current picture to be displayed for a preset time, an error is reported through the indicator lamp.
The utility model discloses a light source actuating system has following advantage:
1. the RGB control current can be adjusted in real time, the heat dissipation pressure of the light-emitting device 12 is reduced, and the use efficiency of a light source is improved;
2. the RGB control current can be adjusted in real time according to the current picture to be displayed, so that the display effect of the picture is improved;
3. the color temperature can be adjusted by adjusting the difference of RGB control currents;
4. the expansibility is strong, and light of any color can be filtered out through the optical filter 13;
5. when a dark picture is displayed, the contrast is enhanced.
Example two:
the embodiment of the utility model provides a still provide a projection system, this projection system includes the light source actuating system in the above-mentioned embodiment one, still includes: a display chip;
the display chip is connected to the optical filter 13 in the light source driving system, and is configured to display a target display image according to light elements of the target display image.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A light source driving system, comprising: a current control device and a light emitting device;
the current control device is connected with the light-emitting device and used for detecting light elements of a current picture to be displayed and generating RGB control current according to the light elements so as to control the light-emitting device to emit light through the RGB control current and further obtain a target display picture.
2. The light source driving system according to claim 1, wherein the current control means comprises: a picture detector and a light source driver;
the picture detector is connected with the light source driver and used for detecting light elements of the current picture to be displayed and generating RGB control signals according to the light elements;
the light source driver is connected with the light-emitting device and used for receiving the RGB control signals sent by the picture detector and generating RGB control currents according to the RGB control signals so as to input the generated RGB control currents to the light-emitting device.
3. The light source driving system according to claim 2, further comprising: a filter;
the optical filter is connected with the light-emitting device and is used for filtering original light emitted by the light-emitting device to obtain optical elements of the current picture to be displayed;
the optical filter is also connected with the picture detector and is used for sending the optical elements of the current picture to be displayed to the picture detector;
the light filter is also used for filtering the light emitted by the light-emitting device to obtain the light elements of the target display picture.
4. The light source driving system according to claim 2, further comprising: a power source;
the power supply is connected with the light source driver and used for supplying power to the light source driver.
5. The light source driving system according to claim 2, wherein the picture detector comprises: and a video image processing chip.
6. The light source driving system according to claim 2, wherein the light source driver comprises: constant current source control panel.
7. The light source driving system according to claim 2, wherein the RGB control signals comprise: RGB three-color PWM pulse width modulation signals.
8. The light source driving system according to claim 3, further comprising: a housing;
the picture detector, the light source driver, the light emitting device and the filter are disposed in the housing.
9. The light source driving system according to claim 8, wherein an indicator lamp is provided on the housing.
10. A projection system comprising the light source driving system as claimed in any one of claims 1 to 9, further comprising: a display chip;
the display chip is connected with the optical filter in the light source driving system and used for displaying a target display picture according to optical elements of the target display picture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021010796.6U CN211909261U (en) | 2020-06-04 | 2020-06-04 | Light source driving system and projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021010796.6U CN211909261U (en) | 2020-06-04 | 2020-06-04 | Light source driving system and projection system |
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| Publication Number | Publication Date |
|---|---|
| CN211909261U true CN211909261U (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021010796.6U Active CN211909261U (en) | 2020-06-04 | 2020-06-04 | Light source driving system and projection system |
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| Country | Link |
|---|---|
| CN (1) | CN211909261U (en) |
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