Point light source system

Abstract

The utility model relates to a point light source system. The point light source system comprises a U-shaped bottom plate, a point light source unit, a main control unit and a power supply unit, wherein the point light source unit, the main control unit and the power supply unit are fixed on the U-shaped bottom plate and are connected with one another; by adopting the LED lamp bead plate, the light supplementing requirement of the CCD sensor is met, the service life can be effectively prolonged, and the energy consumption is reduced. By means of the color wheel device, the lens can emit light sources of various colors, and different light source color requirements of the liquid crystal panel production technology are met. Meanwhile, communication between the point light source machine and an upper computer is achieved through the main control board and the communication board, and automatic operation of the color wheel device is supported; the key group and the display screen are convenient for working personnel to select a working mode and observe a running state; and the position sensor can automatically correct the position of the color wheel disc to ensure that the filter is accurately positioned, and the practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal panel technology, in particular to a point light source system. Background Art

[0002] Liquid crystal display screens are used for screen display of televisions and computers. Under the existing technology, the preparation process of liquid crystal panels is mainly divided into three process stages: first, array: the movement and arrangement of liquid crystal molecules need to be driven by electrons, and ITO is used to realize that each pixel accurately displays the corresponding color, and the image changes accurately and quickly; second, cell: the structure of the liquid crystal panel is like a sandwich, with liquid crystal sandwiched between the lower TFT glass and the upper color filter, and the terminal cell process of liquid crystal panel manufacturing; third, module: the driver IC of the liquid crystal substrate is pressed and integrated with the printed circuit board. This part can transmit the display signal received from the main control circuit to the driver IC, drive the liquid crystal molecules to rotate, and display the image. In the above three processes, it is necessary to extract the information of the liquid crystal module, and the control unit processes and analyzes the image information to determine whether the liquid crystal module is a qualified product, so as to achieve the purpose of automatic detection. Generally, a CCD image sensor is used to capture the information of the liquid crystal module. In the existing technology, metal halide lamps are mostly used to supplement the CCD image sensor, but the metal halide lamp has a short life and is not energy-saving enough.

[0003] For example, Chinese patent CN204479864U discloses an automatic optical detection mechanism for a liquid crystal module, comprising a first carrier jig for carrying a liquid crystal module; a first graphic signal generating device for sending an image signal to a liquid crystal module placed on the first carrier jig; a first driving device for driving the first carrier jig and the first graphic signal generating device to move along a first guide device arranged on a carrying platform; a CCD image sensor for capturing screen image information of the liquid crystal module receiving the image signal; and a control unit for determining whether the liquid crystal module is qualified by receiving and processing the image information captured by the CCD image sensor.

[0004] However, during operation of the CCD image sensor of the above solution, when the CCD image sensor takes pictures in a dark place of the liquid crystal panel, it is easy to cause blurry pictures, and the use of a flash causes problems such as overexposure, resulting in distorted pictures. Summary of the invention

[0005] The object of the present invention is to provide a point light source system to solve the problem in the prior art that a CCD image sensor cannot be accurately supplemented with light.

[0006] To achieve one of the above-mentioned purposes of the utility model, an embodiment of the utility model provides a point light source system, the point light source system comprising a U-shaped bottom plate, and a point light source unit, a main control unit and a power supply unit fixed to the U-shaped bottom plate and connected to each other;

[0007] The point light source unit includes an optical fiber interface arranged on one side of the U-shaped base plate, a heat dissipation device, a lens fixed to the heat dissipation device with the top facing the optical fiber interface, and a color wheel device with one side extending into the gap between the lens and the optical fiber interface; the heat dissipation device includes an LED lamp bead board that provides light source for the lens; the LED lamp bead board is built into the heat dissipation device and abuts against one end of the lens away from the optical fiber interface.

[0008] As a further improvement of an implementation manner of the utility model, the main control unit includes a main control board and a communication board connected to the main control board.

[0009] As a further improvement of an embodiment of the utility model, the point light source unit further includes a position sensor;

[0010] The position sensor is used to detect the rotation position of the color wheel device and feed back to the main control board to generate adjustment information.

[0011] As a further improvement of an embodiment of the utility model, the point light source unit further includes a rotating motor;

[0012] The rotary motor adjusts the color wheel device to rotate to a corresponding filter in response to the adjustment information.

[0013] As a further improvement of an embodiment of the utility model, the power supply unit includes a switching power supply and a dimming power supply;

[0014] The switching power supply is connected to the point light source unit and the main control unit; the dimming power supply is connected to the LED lamp bead board.

[0015] As a further improvement of an embodiment of the utility model, the outer wall of the U-shaped bottom plate on the side where the optical fiber interface is installed is provided with a display screen and a button group; the display screen is connected to the main control board;

[0016] The button group includes a dimming knob, a color wheel selection switch, a manual lighting switch and up and down buttons connected to the main control panel; an optical fiber interface is provided at the center of the dimming knob, and the optical fiber path is parallel to the rotation axis of the dimming knob.

[0017] As a further improvement of one embodiment of the utility model, the outer wall on the other side of the U-shaped base plate where the optical fiber interface is installed is provided with an external power supply interface and a main switch connected to the switching power supply, as well as an Ethernet interface, a debugging interface and several communication interfaces connected to the communication board.

[0018] As a further improvement of an embodiment of the utility model, the point light source system further includes a U-shaped cover plate;

[0019] The U-shaped cover plate and the U-shaped bottom plate are connected in a detachable manner.

[0020] As a further improvement of an embodiment of the utility model, the top side of the U-shaped cover includes a plurality of heat dissipation fans connected to the switching power supply.

[0021] As a further improvement of an embodiment of the utility model, the U-shaped bottom plate also includes four supporting angles arranged at the bottom.

[0022] Compared with the prior art, the point light source system provided by the utility model meets the fill light requirements of the CCD sensor by adopting an LED lamp bead board, and can effectively extend the service life and reduce energy consumption. Through the color wheel device, the lens can emit light sources of various colors to meet the different light source color requirements of the liquid crystal panel production process. At the same time, the main control board and the communication board realize the communication between the point light source machine and the host computer, and support the automatic operation of the color wheel device; the button group and the display screen facilitate the staff to select the working mode and observe the operating status; the position sensor can automatically correct the position of the color wheel to ensure the accurate positioning of the filter, which has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the specific structure of the U-shaped bottom plate device and the point light source unit of the point light source system of the utility model.

[0024] Figure 2 It is a structural schematic diagram of a power supply unit, a main control unit and the front side of a U-shaped bottom plate of the point light source system of the utility model.

[0025] Figure 3 It is a schematic diagram of the structure of the color wheel device of the point light source system of the utility model.

[0026] Figure 4 It is a structural schematic diagram of the rear side of the U-shaped bottom plate of the point light source system of the utility model.

[0027] Figure 5 It is a schematic diagram of the overall model structure of the point light source system of the utility model.

[0028] Figure 6 It is a schematic diagram of the U-shaped cover structure of the point light source system of the utility model.

[0029] Figure 7 It is a connection diagram of a main control board and a communication board in one embodiment of the point light source system of the utility model. DETAILED DESCRIPTION

[0030] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0031] As used herein, terms indicating spatial relative positions such as "upper," "above," "lower," and "below" are used for the purpose of convenience to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. Terms of spatial relative position may be intended to include different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, if the device in the figure is turned over, units described as being "below" or "beneath" other units or features will be located "above" the other units or features. Thus, the exemplary term "below" can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein interpreted accordingly.

[0032] In the first embodiment of the present utility model, the present utility model provides a point light source system, such as Figure 1 As shown, the point light source system includes a U-shaped bottom plate 100, and a point light source unit 110, a main control unit 120 and a power supply unit 130 fixed on the U-shaped bottom plate 100 and connected to each other;

[0033] like Figure 1 As shown, the point light source unit 110 includes a fiber optic interface 111 arranged on one side of the U-shaped base plate 100, a heat dissipation device 112, a lens 113 fixed to the heat dissipation device 112 with the top facing the fiber optic interface 111, and a color wheel device 114 with one side extending into the gap between the lens 113 and the fiber optic interface 111; the heat dissipation device 112 includes an LED lamp bead board 115 providing light source for the lens 113; the LED lamp bead board 115 is built into the heat dissipation device 112 and abuts against one end of the lens 113 away from the fiber optic interface 111.

[0034] Specifically, the LED lamp bead board 115 can adopt OSRAM, model KW CELNM2.TK, LED lamp bead board with brightness above S5. The LED lamp bead board 115 emits light intensity of not less than 4000 lumens, which meets the fill light requirements of CCD camera, and can fill light in the dark light of LCD panel, so that the CCD image sensor can take clear pictures.

[0035] Further, such as Figure 2 As shown, the main control unit 120 includes a main control board 121 and a communication board 122 connected to the main control board 121 .

[0036] Further, such as Figure 1 , 2 As shown, the point light source unit 110 further includes a position sensor 116 ; the position sensor 116 is used to detect the rotation position of the color wheel device 114 and feed back to the main control board 121 to generate adjustment information.

[0037] Further, such as Figure 1 , 2 As shown, the point light source unit 110 further includes a rotating motor 117 ; the rotating motor 117 adjusts the color wheel device 114 to rotate to a corresponding filter 118 in response to the adjustment information.

[0038] Specifically, when the rotating motor 117 stops rotating, or when the point light source system is vibrated by an external force, the color wheel device 114 will rotate at a small angle due to inertia. When the rotating motor 117 rotates again, the position of the filter 118 on the color wheel device 114 may be deviated. Therefore, a position sensor 116 is provided for detecting the rotation position of the color wheel device 114, and the position sensor 116 is connected to the main control board 121. When the color wheel device 114 is not at the starting position, the position sensor 116 can adjust the color wheel device 114 to the starting position to meet the working requirements.

[0039] Specifically, the color wheel device 114 is embedded with a plurality of filters 118 of different colors; the center position of each filter 118 can be aligned with the center line of the optical fiber interface 111 and the lens 113 by rotation.

[0040] Specifically, Figure 3 As shown, the filters 118 include a white filter 118 - a , a red filter 118 - b , a green filter 118 - c , a blue filter 118 - d , and a yellow filter 118 - e .

[0041] It should be noted that in the process of preparing liquid crystal panels, different color light sources are sometimes required. For example, in the curing of liquid crystal panels, blue light cannot be used and yellow light is generally used. Therefore, in order to be able to select different color light sources, the present invention adds a color wheel device 114 so that the lens 113 can emit multiple color light sources to meet the color requirements of the light source in the production process of liquid crystal panels. In addition, through the main control board 121 and the communication board 122, the point light source system can communicate with the host computer to meet the automatic operation requirements of the color wheel device 114.

[0042] Further, such as Figure 2 As shown, the power supply unit 130 includes a switching power supply 131 and a dimming power supply 132 ; the switching power supply 131 is connected to the point light source unit 110 and the main control unit 120 ; the dimming power supply 132 is connected to the LED lamp bead board 115 .

[0043] Specifically, the switch power supply 131 is connected to the main control board 121 to control the various components in the point light source system; the dimming power supply 132 is also connected to the main control board 121 to control the light output of the LED lamp bead board 115.

[0044] Further, such as Figure 2 As shown, the outer wall of the U-shaped bottom plate 100 on the side where the optical fiber interface 111 is installed is provided with a display screen 101 and a button group 102; the display screen 101 is connected to the main control board 121;

[0045] The button group 102 includes a dimming knob 102-a, a color wheel selection switch 102-b, a manual lighting switch 102-c and up and down buttons 102-d connected to the main control panel 121; a fiber optic interface 111 is provided at the center position of the dimming knob 102-a, and the fiber optic path is parallel to the rotation axis of the dimming knob 102-a.

[0046] Specifically, by setting the button group 102, the operator can manually adjust the point light source system to select different working modes. At the same time, by setting the display screen 101, the operator can conveniently observe the working status of the point light source system.

[0047] Further, such as Figure 4 As shown, the outer wall on the other side of the U-shaped base plate 100 where the optical fiber interface 111 is installed is provided with an external power interface 103 and a main switch 104 connected to the switching power supply 131, as well as an Ethernet interface 105, a debugging interface 106 and several communication interfaces 107 connected to the communication board 122.

[0048] Furthermore, as shown in the figure, the point light source system further includes a U-shaped cover plate 200; the connection between the U-shaped cover plate 200 and the U-shaped bottom plate 100 is a detachable connection.

[0049] Optionally, the connection method can form a detachable connection through screw connection.

[0050] Specifically, by arranging the U-shaped bottom plate 100 and the U-shaped cover plate to be detachably connected, later maintenance, inspection, and replacement of other components in the system can be facilitated.

[0051] Further, such as Figure 6 As shown, the top side of the U-shaped cover 200 includes a plurality of heat dissipation fans 201 connected to the switching power supply.

[0052] Specifically, the heat dissipation device 112 is connected to the heat dissipation fan 201 and the switching power supply 131, and the service life of the point light source system can be effectively extended by dissipating heat for the parts in the point light source system.

[0053] Furthermore, the U-shaped bottom plate 100 also includes four supporting corners 108 disposed at the bottom.

[0054] Specifically, Figure 7 As shown, when using the point light source device provided by the utility model, the optical fiber is inserted into the optical fiber interface 111, the main switch 104 is turned on, and the communication connection with the host computer is completed through the communication interface 107. At this time, the switch power supply 131 is energized, the LED lamp bead board 115 is lit, and the communication board 122 receives the adjustment information from the host computer and sends it to the main control board 121. The main control board 121 controls the color wheel device 114 and the LED lamp bead board 115 to select different color light sources and light intensities to meet the fill light requirements for the CCD image sensor, so that the CCD image sensor can capture a clear liquid crystal panel image.

[0055] In summary, the point light source system provided by the utility model meets the fill light requirements of the CCD sensor by adopting an LED lamp bead board, and can effectively extend the service life and reduce energy consumption. Through the color wheel device, the lens can emit light sources of various colors to meet the different light source color requirements of the LCD panel production process. At the same time, the main control board and the communication board realize the communication between the point light source machine and the host computer, and support the automatic operation of the color wheel device; the button group and the display screen facilitate the staff to select the working mode and observe the operating status; the position sensor can automatically correct the position of the color wheel to ensure the accurate positioning of the filter, which has good practicality.

[0056] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0057] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A point light source system, characterized in that: The point light source system comprises a U-shaped bottom plate, and a point light source unit, a main control unit and a power supply unit fixed on the U-shaped bottom plate and connected to each other; The point light source unit includes an optical fiber interface arranged on one side of the U-shaped base plate, a heat dissipation device, a lens fixed to the heat dissipation device with the top facing the optical fiber interface, and a color wheel device with one side extending into the gap between the lens and the optical fiber interface; the heat dissipation device includes an LED lamp bead board that provides light source for the lens; the LED lamp bead board is built into the heat dissipation device and abuts against one end of the lens away from the optical fiber interface.

2. The point light source system according to claim 1, characterized in that: The main control unit includes a main control board and a communication board connected to the main control board.

3. The point light source system according to claim 2, characterized in that: The point light source unit also includes a position sensor; The position sensor is used to detect the rotation position of the color wheel device and feed back to the main control board to generate adjustment information.

4. The point light source system according to claim 3, characterized in that: The point light source unit also includes a rotating motor; The rotary motor adjusts the color wheel device to rotate to a corresponding filter in response to the adjustment information.

5. The point light source system according to claim 1, characterized in that: The power supply unit includes a switching power supply and a dimming power supply; The switching power supply is connected to the point light source unit and the main control unit; the dimming power supply is connected to the LED lamp bead board.

6. The point light source system according to claim 1, characterized in that: The outer wall of the U-shaped bottom plate on the side where the optical fiber interface is installed is provided with a display screen and a button group; the display screen is connected to the main control board; The button group includes a dimming knob, a color wheel selection switch, a manual lighting switch and up and down buttons connected to the main control panel; a fiber optic interface is provided at the center of the dimming knob, and the fiber optic path is parallel to the rotation axis of the dimming knob.

7. The point light source system according to claim 6, characterized in that: The outer wall of the other side of the U-shaped bottom plate where the optical fiber interface is installed is provided with an external power interface and a main switch connected to the switching power supply, as well as an Ethernet interface, a debugging interface and several communication interfaces connected to the communication board.

8. The point light source system according to claim 1, characterized in that: The point light source system also includes a U-shaped cover plate; The U-shaped cover plate and the U-shaped bottom plate are connected in a detachable manner.

9. The point light source system according to claim 8, characterized in that: The top side of the U-shaped cover plate includes a plurality of heat dissipation fans connected to the switching power supply.

10. The point light source system according to claim 1, characterized in that: The U-shaped bottom plate also includes four supporting angles arranged at the bottom.

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