CN204808830U - Luminance detection device - Google Patents
Luminance detection device Download PDFInfo
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- CN204808830U CN204808830U CN201520454683.8U CN201520454683U CN204808830U CN 204808830 U CN204808830 U CN 204808830U CN 201520454683 U CN201520454683 U CN 201520454683U CN 204808830 U CN204808830 U CN 204808830U
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- light valve
- luminance detection
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Abstract
The utility model provides a treater that luminance detection device, this luminance detection device include the light valve, carry out the sensor of sensing and go on the sensing signal of this sensor output handling the light that sees through this light valve. This luminance detection device's simple structure, measure accurate, with can realizing mechanized, batchization the luminous luminance to liquid crystal disply device's backlight detect.
Description
Technical field
The utility model relates to a kind of luminance detection device, the luminance detection device that the luminosity particularly relating to a kind of backlight to liquid crystal indicator detects.
Background technology
Liquid crystal indicator possesses the plurality of advantages such as frivolous, energy-conservation, radiationless, is therefore widely used in the electronic equipments such as digital TV in high resolution, computer, personal digital assistant (PDA), mobile phone, digital camera.Because the liquid crystal panel of liquid crystal indicator itself can't be luminous, therefore need to be equipped with backlight and provide uniform backlight for it, to make on liquid crystal panel shown figure or word no matter when bright light or dim clearly can both be seen by people, therefore the illumination effect of backlight directly has influence on the display effect of liquid crystal indicator.
At each assembly of liquid crystal indicator, before assembling in liquid crystal panel, backlight, glue frame, backboard etc., usually need to carry out various detection to confirm whether its quality meets standard to each assembly.
Present stage based on human eye detection, observes the homogeneity determining screen intensity for the detection of backlight to picture by human eye.But owing to there are differences between individuality, different people may make different evaluations for identical picture, causes testing result inaccurate.And because back light source brightness is higher, containing shortwave blue light, this high energy light can make the macular area toxin amount in human eye increase, and then cause retinal pigment epithelium to become feeble and die, retinal function is caused to be degenerated, cause and eye disease such as aggravation retinal pigment degeneration and ARM etc., long campaigns testing can damage the eyes of testing staff.
Utility model content
The purpose of this utility model comprises provides a kind of luminance detection device, causes detecting not accurate and the problem damaged testing staff's eyes that works long hours to solve in prior art by manually detecting the backlight of liquid crystal indicator or the brightness of other objects.
Concrete, the utility model provides a kind of luminance detection device, and this luminance detection device comprises light valve, the sensor that senses the light through this light valve and the processor processed the sensing signal that this sensor exports.
Preferably, this sensor is corresponding with this light valve is set up in parallel.
Preferably, this luminance detection device comprises further for providing voltage to make this light valve form the voltage control circuit of multiple viewing area for this light valve.
Preferably, this voltage control circuit is arranged on surface-mounted integrated circuit, and this surface-mounted integrated circuit is arranged on this light valve.
Preferably, this luminance detection device comprises warning horn further, and this warning horn connects this processor.
Preferably, this light valve is liquid crystal light valve.
Preferably, this sensor is integrated by multiple luminance sensor unit and forms, and with the multiple viewing areas one_to_one corresponding on this light valve.
Preferably, this sensor is Charged Coupled Device.
Luminance detection device provided by the utility model, on light valve, multiple viewing area is formed after light-metering is by light valve, light through the plurality of viewing area is supplied to sensor and detects, and utilize luminance sensor unit corresponding with position, the plurality of viewing area on sensor to detect its brightness, compared by the light intensity of processor to each viewing area, thus realize detecting the homogeneity of the back light source brightness of liquid crystal indicator, solve in prior art due to manual detection not precisely and the problem that testing staff's eye is damaged, and this luminance detection device simple structure, mechanization can be realized, the backlight of liquid crystal indicator is detected mass.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to technological means of the present utility model can be better understood, and can be implemented according to the content of instructions, and can become apparent to allow above and other object of the present utility model, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
The structural representation of a kind of luminance detection device that Fig. 1 provides for embodiment of the present utility model.
Fig. 2 is the structural representation of the light valve of the luminance detection device shown in Fig. 1.
The light penetration rate that Fig. 3 is the light valve shown in Fig. 2 and the family curve schematic diagram of voltage.
Fig. 4 is the structural representation of the sensor of the luminance detection device shown in Fig. 1.
Embodiment
For further setting forth the utility model for the technological means reaching predetermined object and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to according to the embodiment of a kind of luminance detection device that the utility model proposes, method, step, structure, feature and effect, be described in detail as follows.
Relevant aforementioned and other technology contents, Characteristic of the present utility model, can clearly present in following cooperation describes in detail with reference to graphic preferred embodiment.By the explanation of embodiment, when can to the utility model for the technological means reaching predetermined object and take and effect be able to more deeply and concrete understanding, but institute's accompanying drawings is only to provide with reference to the use with explanation, is not used for being limited the utility model.
Please refer to Fig. 1, the structural representation of a kind of luminance detection device that Fig. 1 provides for embodiment of the present utility model.The processor 102 that the sensor 101 that this luminance detection device 10 comprises light valve 100, sense the light through this light valve 100, the sensing signal exported sensor 101 process and alarm 103.Light valve 100 is corresponding is set up in parallel with this for this sensor 101, and this sensor 101 is connected this processor 102 with this warning horn 103.
Please refer to Fig. 2, Fig. 2 is the structural representation of the light valve 100 of the luminance detection device 10 shown in Fig. 1.This light valve 100 is liquid crystal light valve, and this light valve 100 comprises light valve liquid crystal 1000 and surface-mounted integrated circuit 1001.This surface-mounted integrated circuit 1001 is arranged on this light valve liquid crystal 1000, voltage is provided to the horizontal and vertical of this light valve liquid crystal 1000, to form multiple viewing area when light passes from this light valve 100 at this light valve 100 by the voltage control circuit on this surface-mounted integrated circuit 1001.Preferably, this voltage control circuit provides voltage to the horizontal and vertical of this light valve liquid crystal 1000 equally spacedly, with when light from this light valve 100 through time on this light valve 100 multiple formation size, shape identical, the pattern of lattice-shaped.
Please also refer to Fig. 3, Fig. 3 light penetration rate for the light valve 100 shown in Fig. 2 and the family curve schematic diagram of voltage.Visible according to Fig. 3, the light penetration rate of this light valve 100 reduces along with the increase of the voltage inputted to this light valve 100, when input voltage is more than one critical value (as 3V), the light penetration rate of this light valve 100 reduces to 0, therefore, the magnitude of voltage that the voltage control circuit on this light valve 100 inputs to the light valve liquid crystal 1000 of this light valve 100 should be greater than this critical value.
Please refer to Fig. 4, Fig. 4 is the structural representation of the sensor 101 of the luminance detection device 10 shown in Fig. 1.This sensor 101 is integrated by the luminance sensor unit 1010 that multiple size is identical and forms.This luminance sensor unit 1010 arranges in the direction of this sensor 101 towards this light valve 100, and it is corresponding with the multiple viewing areas on this light valve 100, such as corresponding with the position of the grid-like pattern that light valve 100 shows, each luminance sensor unit 1010 is corresponding with the position of a grid of the pattern of lattice-shaped respectively.Preferably, this sensor 101 is luminance sensor or Charged Coupled Device (Charge-CoupledDevice, CCD), but is not limited thereto, and also can be the device that other can realize detecting light intensity.
Illustrate, when using the backlight of this luminance detection device 10 pairs of liquid crystal indicators to detect, this luminance detection device 10 is placed on the exiting surface side of backlight to be detected, start this luminance detection device 10, voltage control circuit on this light valve 100 provides voltage to the horizontal and vertical of this light valve liquid crystal 1000 equally spacedly, forms the pattern (as nine grids pattern) of multiple size, lattice-shaped that shape is identical when light that backlight sends is through this light valve 100 on this light valve 100.This sensor 101 detects the light through this light valve 100, because each luminance sensor unit 1010 on this sensor 101 is corresponding with the position of a grid of the pattern of lattice-shaped respectively, the light intensity obtaining each grid pattern is detected by the light intensity of each luminance sensor unit 1010 to each grid pattern, by processor 102, the light intensity of each grid pattern is obtained a parameter k divided by etalon optical power again, contrast the numerical value of the parameter k of two often adjacent grid patterns, if the absolute value of the difference of the numerical value of the parameter k of these two adjacent grid patterns is less than or equal to a preset reference value, as 0.017, it is qualified to be then considered as, if be greater than this preset reference value, then represent that the light that backlight sends is uneven, then this backlight is regarded as substandard products, processor 102 controls this alarm 103 and gives the alarm.The large I of this preset reference value is arranged according to the requirement of producer.
Luminance detection device 10 provided by the utility model, on light valve 100, multiple viewing area is formed after light-metering is by light valve 100, light through the plurality of viewing area is supplied to sensor 101 and detects, and utilize luminance sensor unit 1010 corresponding with position, the plurality of viewing area on sensor 101 to detect its brightness, compared by the light intensity of processor 102 to each viewing area, thus realize detecting the homogeneity of the back light source brightness of liquid crystal indicator, solve in prior art due to manual detection not precisely and the problem that testing staff's eye is damaged, and this luminance detection device 10 simple structure, mechanization can be realized, the backlight of liquid crystal indicator is detected mass.
The above, it is only the preferred embodiment of utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solutions of the utility model content, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (8)
1. a luminance detection device, is characterized in that, this luminance detection device comprises light valve, the sensor that senses the light through this light valve and the processor processed the sensing signal that this sensor exports.
2. luminance detection device according to claim 1, is characterized in that, this sensor is corresponding with this light valve to be set up in parallel.
3. luminance detection device according to claim 1, is characterized in that, this luminance detection device comprises further for providing voltage to make this light valve form the voltage control circuit of multiple viewing area for this light valve.
4. luminance detection device according to claim 3, is characterized in that, this voltage control circuit is arranged on surface-mounted integrated circuit, and this surface-mounted integrated circuit is arranged on this light valve.
5. luminance detection device according to claim 1, is characterized in that, this luminance detection device comprises warning horn further, and this warning horn connects this processor.
6. luminance detection device according to claim 1, is characterized in that, this light valve is liquid crystal light valve.
7. luminance detection device according to claim 1, is characterized in that, this sensor is integrated by multiple luminance sensor unit and forms, and with the multiple viewing areas one_to_one corresponding on this light valve.
8. luminance detection device according to claim 1, is characterized in that, this sensor is Charged Coupled Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520454683.8U CN204808830U (en) | 2015-06-26 | 2015-06-26 | Luminance detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520454683.8U CN204808830U (en) | 2015-06-26 | 2015-06-26 | Luminance detection device |
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| Publication Number | Publication Date |
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| CN204808830U true CN204808830U (en) | 2015-11-25 |
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| CN201520454683.8U Active CN204808830U (en) | 2015-06-26 | 2015-06-26 | Luminance detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107085344A (en) * | 2017-05-19 | 2017-08-22 | 南京信息工程大学 | The intelligent apparatus and method of backlight in a kind of full-automatic setting imaging system |
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2015
- 2015-06-26 CN CN201520454683.8U patent/CN204808830U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107085344A (en) * | 2017-05-19 | 2017-08-22 | 南京信息工程大学 | The intelligent apparatus and method of backlight in a kind of full-automatic setting imaging system |
| CN107085344B (en) * | 2017-05-19 | 2020-02-18 | 南京信息工程大学 | Intelligent device and method for automatically setting backlight in imaging system |
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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee after: Kunshan Longteng Au Optronics Co Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee before: Kunshan Longteng Optronics Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |