CN103676313A - Illumination intensity adjustment method, device and system - Google Patents
Illumination intensity adjustment method, device and system Download PDFInfo
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- CN103676313A CN103676313A CN201310630249.6A CN201310630249A CN103676313A CN 103676313 A CN103676313 A CN 103676313A CN 201310630249 A CN201310630249 A CN 201310630249A CN 103676313 A CN103676313 A CN 103676313A
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- 238000005286 illumination Methods 0.000 title claims abstract description 236
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- 230000008447 perception Effects 0.000 claims description 15
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- 238000002834 transmittance Methods 0.000 abstract 1
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- 108091008695 photoreceptors Proteins 0.000 description 3
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- 239000004973 liquid crystal related substance Substances 0.000 description 2
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- 230000003287 optical effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
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Abstract
The invention provides an illumination intensity adjustment method, device and system. The device comprises a plurality of light sources, a light source mixer, and a light source control unit. The light sources are connected with the light source mixer. The device is characterized by further comprising a photosensitive unit and an output control unit. The photosensitive unit is connected with the light source control unit. The output control unit is connected with the light source mixer. The photosensitive unit is used for sensing illumination intensities of the light sources and outputting the illumination intensities to the light source control unit. The light source control unit is used for controlling the output control unit according to the illumination intensities. The output control unit is used for controlling transmittance of output light from the light source mixer under control of the light source control unit. According to the technical scheme, the illumination intensity adjustment method, device and system has the advantage that efficiency of detecting array substrates can be improved.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly a kind of intensity of illumination control method
And device and system.
Background technology
Thin Film Transistor-LCD (English: Thin Film Transistor Liquid Crystal Display, is called for short: TFT-LCD) with it, have the main product that high image quality, the high and low consumed power of space availability ratio, the advantage such as radiationless become market.At present, to the optical detection of the array base palte in TFT-LCD, adopt the intensity of illumination regulating system of power ratio control to come pair array substrate to detect.
Fig. 1 is the structural representation of intensity of illumination regulating system of the prior art, as shown in Figure 1, this intensity of illumination regulating system comprises: a plurality of light sources, light source power controller, light source mixer, light source separative element and scanning element, wherein, a plurality of light sources are connected with light source power controller by power control line, light source is connected with light source mixer by optical fiber, light source mixer is connected with light source separative element by light source export interface, light source separative element is connected with scanning element by many connecting lines, scanning element comprises a plurality of cameras, scanning element is connected with light source power controller by feedback line.
Fig. 2 is the workflow schematic diagram of intensity of illumination regulating system, as shown in Figure 2, the workflow of this intensity of illumination regulating system is: the target intensity of illumination of system preload settings, the light that light source mixer concentrates a plurality of light sources to provide, by light source export interface by light by many connecting line mean allocation to scanning element, scanning element and by feedback line feeds back to light source power controller by the target light of the actual intensity of illumination receiving and setting according to strength ratio after scanning.When if actual intensity of illumination is less than target intensity of illumination, light source power controller increases the intensity of light source by power control line, thereby increase the power of light source, further increase the power of light source mixer, the intensity of illumination that makes light source mixer offer light source piece-rate system increases, until the actual intensity of illumination that shooting unit receives is identical with the target intensity of illumination of setting; When if actual intensity of illumination is greater than target intensity of illumination, light source power controller reduces the intensity of light source by power control line, thereby reduce the power of light source, further reduce the power of light source mixer, the intensity of illumination that makes light source mixer offer light source separative element reduces, until the actual intensity of illumination that scanning element receives is identical with the target intensity of illumination of setting; When if actual intensity of illumination equals target intensity of illumination, by scanning element, carry out Taking Pictures recording, and the intensity of illumination of recording is fed back to light source power controller by feedback line, and then complete the adjustment process for the first time of intensity of illumination, in the detection of carrying out next pair array substrate.
There are the following problems for prior art: while carrying out capable of regulating illumination intensity by the mode of power ratio control, owing to being actual intensity of illumination and target intensity of illumination again after scanning element scanning, draw the different of actual intensity of illumination and target intensity of illumination, by light source power controller, increase or reduce again the intensity of illumination of light source, in upper once each scanning element after scanning, continuation by the target light of the actual intensity of illumination after the adjustment receiving and setting according to strength ratio, therefore, need to repeatedly regulate and just can make actual intensity of illumination identical with target setting intensity of illumination, there is serious hysteresis quality in this regulative mode, and need to repeatedly regulate just and can reach best intensity of illumination, cannot guarantee detection efficiency, thereby reduced the efficiency that pair array substrate detects.
Summary of the invention
The invention provides a kind of intensity of illumination control method and device and system, for improving the detection efficiency of pair array substrate.
For achieving the above object, the invention provides a kind of intensity of illumination regulating device, comprise: a plurality of light sources, light source mixer, light source control unit, described a plurality of light source is connected with described light source mixer, also comprise: photosensitive unit and output control unit, described photosensitive unit is connected with described light source control unit, and described output control unit is connected with described light source mixer;
Described photosensitive unit, goes out the intensity of illumination of described a plurality of light sources, and exports described intensity of illumination to described light source control unit for perception;
Described light source control unit, for controlling described output control unit according to described light intensity illumination;
Described output control unit, under the control of described light source control unit, controls the light transmission capacity of the output light of described light source mixer output.
Preferably, whether described light source control unit equates with default intensity of illumination specifically for comparing described intensity of illumination;
Described output control unit is specifically for comparing out described intensity of illumination and default intensity of illumination when unequal when described light source control unit, under the control of described light source control unit, control the light transmission capacity of the output light of described light source mixer output, so that described intensity of illumination equates with default intensity of illumination.
Preferably, described output control unit is light valve, and described light source control unit is specifically for controlling the aperture of described light valve.
Preferably, described light valve be shaped as fan-shaped.
Preferably, the range of adjustment of the aperture of described light valve is: 0-360 degree.
For achieving the above object, the invention provides a kind of intensity of illumination regulating system, comprising: intensity of illumination regulating device, light source separative element and scanning element, described intensity of illumination regulating device adopts above-mentioned intensity of illumination regulating device.
For achieving the above object, the invention provides a kind of intensity of illumination control method, the method is based on intensity of illumination regulating device, intensity of illumination regulating device comprises: a plurality of light sources, light source mixer, light source control unit, described a plurality of light source is connected with described light source mixer, it is characterized in that, also comprises: photosensitive unit and output control unit, described photosensitive unit is connected with described light source control unit, and described output control unit is connected with described light source mixer;
The method comprises:
Described photosensitive unit perception goes out the intensity of illumination of described a plurality of light sources, and exports described intensity of illumination to described light source control unit;
Described light source control unit is controlled described output control unit according to described light intensity illumination;
Described output control unit, under the control of described light source control unit, is controlled the light transmission capacity of the output light of described light source mixer output.
Preferably, described output control unit is light valve, and described light source control unit is specifically for controlling the aperture of described light valve.
Preferably, the method specifically comprises:
The initial opening of default intensity of illumination and light valve;
Whether described light source control unit is compared described intensity of illumination and is equated with default intensity of illumination;
When described light source control unit is compared out described intensity of illumination and default intensity of illumination when unequal, the aperture of the described light valve of control of described light source control unit, and then control the light transmission capacity of the output light of described light source mixer output, so that described intensity of illumination equates with default intensity of illumination;
Scanning element is carried out Taking Pictures recording;
Complete adjustment process.
Preferably, the aperture of described light valve is adjustable.
Preferably, the range of adjustment of the aperture of described light valve is: 0-360 degree.
In intensity of illumination control method provided by the invention and device and system, this intensity of illumination regulating device comprises: a plurality of light sources, light source mixer, light source control unit, a plurality of light sources are connected with light source mixer, in intensity of illumination regulating device, set up photosensitive unit and output control unit, photosensitive unit perception goes out the intensity of illumination of described a plurality of light sources, and exports intensity of illumination to described light source control unit; Light source control unit is controlled described output control unit according to light intensity illumination; Output control unit is under the control of light source control unit, control the light transmission capacity of the output light of light source mixer output, can be before pair array substrate be tested, intensity of illumination is adjusted to default intensity of illumination automatically, thereby intensity of illumination when each pair array substrate is detected is all in best intensity of illumination, and then improved the detection efficiency of pair array substrate.
Accompanying drawing explanation
Fig. 1 is the structural representation of intensity of illumination regulating system of the prior art;
Fig. 2 is the workflow schematic diagram of intensity of illumination regulating system;
The structural representation of the intensity of illumination regulating device that Fig. 3 provides for the embodiment of the present invention one;
Fig. 4 a-4d is the structural representation that the light valve in Fig. 3 is operated in different apertures;
The structural representation of the intensity of illumination regulating system that Fig. 5 provides for the embodiment of the present invention two;
The schematic flow sheet of the intensity of illumination control method that Fig. 6 provides for the embodiment of the present invention three;
The schematic flow sheet of the intensity of illumination control method that Fig. 7 provides for the embodiment of the present invention four.
Embodiment
For making those skilled in the art understand better technical scheme of the present invention, below in conjunction with accompanying drawing, a kind of intensity of illumination control method provided by the invention and device thereof and system are described in further detail.
The structural representation of the intensity of illumination regulating device that Fig. 3 provides for the embodiment of the present invention one, as shown in Figure 3, this intensity of illumination regulating device comprises: a plurality of light sources 1, light source mixer 3, light source control unit 2, a plurality of light sources 1 are connected with light source mixer 3, also comprise: photosensitive unit 7 and output control unit 5, photosensitive unit 7 is connected with light source control unit 2, and output control unit 5 is connected with light source mixer 3; Photosensitive unit 7, goes out the intensity of illumination of a plurality of light sources 1, and exports intensity of illumination to light source control unit 2 for perception; Light source control unit 2, for controlling output control unit 5 according to light intensity illumination; Output control unit 5, under the control at light source control unit 2, controls the light transmission capacity of the output light of light source mixer 3 outputs.
Particularly, a plurality of light sources 1 provide respectively the light with different intensities of illumination, a plurality of light sources 1 are connected with light source mixer 3 by many optical fiber 9 respectively, the optical superposition with different intensities of illumination that light source mixer 3 provides a plurality of light sources 1 is got up and by light uniformization, and then makes the intensity of illumination homogenising of light.The transit dose of exporting by change light in the present embodiment is a mode of controlled light intensity namely, alternatively, can control by adding gray scale mirror (ND mirror) intensity of illumination of light.Photosensitive unit 7 is separately positioned on many optical fiber 9, and is connected with light source control unit 2 by photoreceptor signal line 8.
Further, whether light source control unit 2 equates with default intensity of illumination specifically for comparison intensity of illumination; Output control unit 5 is specifically for comparing out intensity of illumination and default intensity of illumination when unequal when light source control unit 2, under the control of light source control unit 2, control the light transmission capacity of the output light of light source mixer 3 outputs, so that intensity of illumination equates with default intensity of illumination.
Preferably, output control unit 5 is light valve 10, and light source control unit 2 is specifically for controlling the aperture of light valve 10.It should be noted that, the aperture of light valve 10 refers to: the opening degree of light valve.Wherein, being shaped as of light valve 10 is fan-shaped, and light valve 10 is arranged on optical fiber, and optical fiber comprises: fibre core 11, covering 12 and overcoat 13, light valve 10 is fan-shaped and extends to fibre core 11, thereby shelters from the output quantity of output light.The range of adjustment of the aperture of light valve is: 0-360 degree.Fig. 4 a-4c is the structural representation of the different aperture of the light valve in Fig. 3, and as shown in Fig. 4 a, the aperture of light valve is 120 degree, and as shown in Figure 4 b, the aperture of light valve is 180 degree, and as shown in Fig. 4 c, the aperture of light valve is 270 degree, and as shown in Fig. 4 d, the aperture of light valve is 15 degree.
Particularly, photosensitive unit 7 perception go out the intensity of illumination of a plurality of light sources 1, and export intensity of illumination to light source control unit 2; Light source control unit 2 is controlled output control unit 5 according to light intensity illumination; Output control unit 5 is under the control of light source control unit 2, control the light transmission capacity of the output light of light source mixer 3 outputs, therefore, can be before pair array substrate be tested, intensity of illumination is adjusted to default intensity of illumination automatically, thereby intensity of illumination when each pair array substrate is detected, all in best intensity of illumination, has further improved the detection efficiency of pair array substrate.
In the intensity of illumination regulating device that the present embodiment provides, this intensity of illumination regulating device comprises: a plurality of light sources, light source mixer, light source control unit, a plurality of light sources are connected with light source mixer, in intensity of illumination regulating device, set up photosensitive unit and output control unit, photosensitive unit perception goes out the intensity of illumination of described a plurality of light sources, and exports intensity of illumination to described light source control unit; Light source control unit is controlled described output control unit according to light intensity illumination; Output control unit is under the control of light source control unit, control the light transmission capacity of the output light of light source mixer output, can be before pair array substrate be tested, intensity of illumination is adjusted to default intensity of illumination automatically, thereby intensity of illumination when each pair array substrate is detected is all in best intensity of illumination, thereby the detection efficiency of raising pair array substrate.
The structural representation of the intensity of illumination regulating system that Fig. 5 provides for the embodiment of the present invention two, as shown in Figure 5, this intensity of illumination regulating system comprises: intensity of illumination regulating device, light source separative element 4 and scanning element 6, intensity of illumination regulating device comprises: a plurality of light sources 1, light source mixer 3, light source control unit 2, a plurality of light sources 1 are connected with light source mixer 3, also comprise: photosensitive unit 7 and output control unit 5, photosensitive unit 7 is connected with light source control unit 2, and output control unit 5 is connected with light source mixer 3; Photosensitive unit 7, goes out the intensity of illumination of a plurality of light sources 1, and exports intensity of illumination to light source control unit 2 for perception; Light source control unit 2, for controlling output control unit 5 according to light intensity illumination; Output control unit 5, under the control at light source control unit 2, controls the light transmission capacity of the output light of light source mixer 3 outputs.
Wherein, light source separative element 4 is for exporting the light of light source mixer 3 to scanning element 6 by output control unit 5, and scanning element 6 specifically can comprise a plurality of cameras, for Taking Pictures recording.
Particularly, a plurality of light sources 1 are connected with light source mixer 3 by many optical fiber 9 respectively, the light that the concentrated a plurality of light sources 1 of light source mixer 3 provide by light uniformization, and then make the intensity of illumination homogenising of light.Photosensitive unit 7 is separately positioned on many optical fiber 9, and is connected with light source control unit 2 by photoreceptor signal line 8.
Further, whether light source control unit 2 equates with default intensity of illumination specifically for comparison intensity of illumination; Output control unit 5 is specifically for comparing out intensity of illumination and default intensity of illumination when unequal when light source control unit 2, under the control of light source control unit 2, control the light transmission capacity of the output light of light source mixer 3 outputs, so that intensity of illumination equates with default intensity of illumination.
Preferably, output control unit 5 is light valve 10, and light source control unit 2 is specifically for controlling the aperture of light valve 10.It should be noted that, the aperture of light valve 10 refers to: the opening degree of light valve.Wherein, being shaped as of light valve 10 is fan-shaped, and light valve 10 is arranged on optical fiber, and optical fiber comprises: fibre core 11, covering 12 and overcoat 13, light valve 10 is fan-shaped and extends to fibre core 11, thereby shelters from the output quantity of output light.The range of adjustment of the aperture of light valve is: 0-360 degree.
In the intensity of illumination regulating system that the present embodiment provides, this system comprises intensity of illumination regulating device, light source separative element and scanning element: this intensity of illumination regulating device comprises: a plurality of light sources, light source mixer, light source control unit, a plurality of light sources are connected with light source mixer, in intensity of illumination regulating device, set up photosensitive unit and output control unit, photosensitive unit perception goes out the intensity of illumination of described a plurality of light sources, and exports intensity of illumination to described light source control unit; Light source control unit is controlled described output control unit according to light intensity illumination; Output control unit is under the control of light source control unit, control the light transmission capacity of the output light of light source mixer output, can be before pair array substrate be tested, intensity of illumination is adjusted to default intensity of illumination automatically, thereby intensity of illumination when each pair array substrate is detected is all in best intensity of illumination, thereby the detection efficiency of raising pair array substrate.
The schematic flow sheet of the intensity of illumination control method that Fig. 6 provides for the embodiment of the present invention three, as shown in Figure 6, the method is based on intensity of illumination regulating device, intensity of illumination regulating device comprises: a plurality of light sources, light source mixer, light source control unit, described a plurality of light source is connected with described light source mixer, it is characterized in that, also comprises: photosensitive unit and output control unit, described photosensitive unit is connected with described light source control unit, and described output control unit is connected with described light source mixer;
The method comprises:
Step S11, described photosensitive unit perception go out the intensity of illumination of described a plurality of light sources, and export described intensity of illumination to described light source control unit;
Step S11, described light source control unit are controlled described output control unit according to described light intensity illumination;
Step S11, described output control unit, under the control of described light source control unit, are controlled the light transmission capacity of the output light of described light source mixer output.
In the intensity of illumination control method that the present embodiment provides, the method is based on intensity of illumination regulating device, this intensity of illumination regulating device comprises: a plurality of light sources, light source mixer, light source control unit, a plurality of light sources are connected with light source mixer, in intensity of illumination regulating device, set up photosensitive unit and output control unit, photosensitive unit perception goes out the intensity of illumination of described a plurality of light sources, and exports intensity of illumination to described light source control unit; Light source control unit is controlled described output control unit according to light intensity illumination; Output control unit is under the control of light source control unit, control the light transmission capacity of the output light of light source mixer output, can be before pair array substrate be tested, intensity of illumination is adjusted to default intensity of illumination automatically, thereby intensity of illumination when each pair array substrate is detected is all in best intensity of illumination, thereby the detection efficiency of raising pair array substrate.
The schematic flow sheet of the intensity of illumination control method that Fig. 7 provides for the embodiment of the present invention four, as shown in Figure 7, the method is based on intensity of illumination regulating device, intensity of illumination regulating device comprises: a plurality of light sources, light source mixer, light source control unit, a plurality of light sources are connected with light source mixer, it is characterized in that, also comprise: photosensitive unit and output control unit, photosensitive unit is connected with light source control unit, and output control unit is connected with light source mixer; Wherein, output control unit is light valve, and light source control unit is specifically for controlling the aperture of light valve;
The method comprises:
The initial opening of step S21, default intensity of illumination and light valve;
Whether step S22, described light source control unit are compared described intensity of illumination and are equated with default intensity of illumination;
Step S23, described light source control unit 360 degree regulate the aperture of light valve;
Particularly, when described light source control unit is compared out described intensity of illumination and default intensity of illumination when unequal, the aperture of the described light valve of control of described light source control unit, and then control the light transmission capacity of the output light of described light source mixer output, so that described intensity of illumination equates with default intensity of illumination;
Step S24, scanning element scan and Taking Pictures recording;
Step S25, complete adjustment process.
Particularly, a plurality of light sources 1 are connected with light source mixer 3 by many optical fiber 9 respectively, the light that the concentrated a plurality of light sources 1 of light source mixer 3 provide by light uniformization, and then make the intensity of illumination homogenising of light.Photosensitive unit 7 is separately positioned on many optical fiber 9, and is connected with light source control unit 2 by photoreceptor signal line 8.
Further, whether light source control unit 2 equates with default intensity of illumination specifically for comparison intensity of illumination; Output control unit 5 is specifically for comparing out intensity of illumination and default intensity of illumination when unequal when light source control unit 2, under the control of light source control unit 2, control the light transmission capacity of the output light of light source mixer 3 outputs, so that intensity of illumination equates with default intensity of illumination.
Preferably, output control unit 5 is light valve 10, and light source control unit 2 is specifically for controlling the aperture of light valve 10.It should be noted that, the aperture of light valve 10 refers to: the opening degree of light valve.Wherein, being shaped as of light valve 10 is fan-shaped, and light valve 10 is arranged on optical fiber, and optical fiber comprises: fibre core 11, covering 12 and overcoat 13, light valve 10 is fan-shaped and extends to fibre core 11, thereby shelters from the output quantity of output light.
Particularly, photosensitive unit 7 perception go out the intensity of illumination of a plurality of light sources 1, and export intensity of illumination to light source control unit 2; Light source control unit 2 is controlled output control unit 5 according to light intensity illumination; Output control unit 5 is under the control of light source control unit 2, control the light transmission capacity of the output light of light source mixer 3 outputs, therefore, can be before pair array substrate be tested, intensity of illumination is adjusted to default intensity of illumination automatically, thereby intensity of illumination when each pair array substrate is detected, all in best intensity of illumination, has further improved the detection efficiency of pair array substrate.
In the intensity of illumination control method that the present embodiment provides, the method is based on intensity of illumination regulating device, this intensity of illumination regulating device comprises: a plurality of light sources, light source mixer, light source control unit, a plurality of light sources are connected with light source mixer, in intensity of illumination regulating device, set up photosensitive unit and output control unit, photosensitive unit perception goes out the intensity of illumination of described a plurality of light sources, and exports intensity of illumination to described light source control unit; Light source control unit is controlled described output control unit according to light intensity illumination; Output control unit is under the control of light source control unit, control the light transmission capacity of the output light of light source mixer output, can be before pair array substrate be tested, intensity of illumination is adjusted to default intensity of illumination automatically, thereby intensity of illumination when each pair array substrate is detected is all in best intensity of illumination, thereby the detection efficiency of raising pair array substrate.
Be understandable that, above embodiment is only used to principle of the present invention is described and the illustrative embodiments that adopts, yet the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (12)
1. an intensity of illumination regulating device, comprise: a plurality of light sources, light source mixer, light source control unit, described a plurality of light source is connected with described light source mixer, it is characterized in that, also comprise: photosensitive unit and output control unit, described photosensitive unit is connected with described light source control unit, and described output control unit is connected with described light source mixer;
Described photosensitive unit, goes out the intensity of illumination of described a plurality of light sources, and exports described intensity of illumination to described light source control unit for perception;
Described light source control unit, for controlling described output control unit according to described light intensity illumination;
Described output control unit, under the control of described light source control unit, controls the light transmission capacity of the output light of described light source mixer output.
2. intensity of illumination regulating device according to claim 1, is characterized in that, whether described light source control unit equates with default intensity of illumination specifically for comparing described intensity of illumination;
Described output control unit is specifically for comparing out described intensity of illumination and default intensity of illumination when unequal when described light source control unit, under the control of described light source control unit, control the light transmission capacity of the output light of described light source mixer output, so that described intensity of illumination equates with default intensity of illumination.
3. intensity of illumination regulating device according to claim 1, is characterized in that, described output control unit is light valve, and described light source control unit is specifically for controlling the aperture of described light valve.
4. intensity of illumination regulating device according to claim 3, is characterized in that, being shaped as of described light valve is fan-shaped.
5. intensity of illumination regulating device according to claim 4, is characterized in that, the range of adjustment of the aperture of described light valve is: 0-360 degree.
6. an intensity of illumination regulating system, comprising: intensity of illumination regulating device, light source separative element and scanning element, is characterized in that the arbitrary described intensity of illumination regulating device of described intensity of illumination regulating device employing the claims 1-5.
7. an intensity of illumination control method, it is characterized in that, the method is based on intensity of illumination regulating device, intensity of illumination regulating device comprises: a plurality of light sources, light source mixer, light source control unit, described a plurality of light source is connected with described light source mixer, it is characterized in that, also comprises: photosensitive unit and output control unit, described photosensitive unit is connected with described light source control unit, and described output control unit is connected with described light source mixer;
The method comprises:
Described photosensitive unit perception goes out the intensity of illumination of described a plurality of light sources, and exports described intensity of illumination to described light source control unit;
Described light source control unit is controlled described output control unit according to described light intensity illumination;
Described output control unit, under the control of described light source control unit, is controlled the light transmission capacity of the output light of described light source mixer output.
8. intensity of illumination control method according to claim 7, is characterized in that, described output control unit is light valve, and described light source control unit is specifically for controlling the aperture of described light valve.
9. intensity of illumination control method according to claim 8, is characterized in that, the method specifically comprises:
The initial opening of default intensity of illumination and light valve;
Whether described light source control unit is compared described intensity of illumination and is equated with default intensity of illumination;
When described light source control unit is compared out described intensity of illumination and default intensity of illumination when unequal, the aperture of the described light valve of control of described light source control unit, and then control the light transmission capacity of the output light of described light source mixer output, so that described intensity of illumination equates with default intensity of illumination;
Scanning element is carried out Taking Pictures recording;
Complete adjustment process.
10. intensity of illumination control method according to claim 9, is characterized in that, being shaped as of described light valve is fan-shaped.
11. intensity of illumination control methods according to claim 10, is characterized in that, the aperture of described light valve is adjustable.
12. intensity of illumination control methods according to claim 11, is characterized in that, the range of adjustment of the aperture of described light valve is: 0-360 degree.
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| CN109253412A (en) * | 2017-07-14 | 2019-01-22 | 光宝科技股份有限公司 | Lighting system and its operation method |
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| CN103000142A (en) * | 2012-12-14 | 2013-03-27 | 江苏中科天安智联科技有限公司 | Backlight brightness self-adaption adjusting circuit for intelligent vehicle-mounted thin film transistor (TFT) liquid crystal display (LCD) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253412A (en) * | 2017-07-14 | 2019-01-22 | 光宝科技股份有限公司 | Lighting system and its operation method |
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