CN205483497U - Even measuring device of LED area array light source - Google Patents
Even measuring device of LED area array light source Download PDFInfo
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- CN205483497U CN205483497U CN201620148246.8U CN201620148246U CN205483497U CN 205483497 U CN205483497 U CN 205483497U CN 201620148246 U CN201620148246 U CN 201620148246U CN 205483497 U CN205483497 U CN 205483497U
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Abstract
The utility model discloses an even measuring device of LED area array light source belongs to LED area array light source and measures the field, and aim at solves the method that adopts the reconnaissance test at present and measures LED area array light source, and the degree of consistency is measured the accuracy and is difficult to guarantee, and when adopting it to adjust LED area array light source, need consume the problem of a large amount of manpowers, material resources and time. This even measuring device of LED area array light source includes straight -line motion mechanism, detection device, analog signal collector, control system. Adopt the utility model discloses, scanning has detected the light energy of LED area array light source in whole irradiation area in the time of can within a short period of time, detects fast, efficient, and the result accuracy just detects aero, visual.
Description
Technical field
This utility model relates to electro-mechanical arts, especially LED area array light source measurement field, is specially a kind of LED area array light source uniformity measurement apparatus.
Background technology
LED area array light source is a kind of novel, lamp source of energy-conserving and environment-protective, and it is widely used in the industry-by-industries such as photocuring, exposure machine, medical treatment.LED area array light source is typically combined by the way of matrix arrangement by multiple LED point light source, the light ray energy that its light energy value in certain irradiation zone is sent by multiple LED lamp bead is irradiated or the summation of superposition, and the light energy uniformity in this region then depends on the concordance of each LED lamp bead.
Owing to lamp bead itself there are differences, and the existence of workpiece error, rigging error etc., in causing the zones of different of LED area array light source, LED lamp bead is irradiated or the energy of superposition not quite identical.For LED area array light source, the uniformity of energy is a very important index, directly affects the serviceability of LED area array light source.Such as the ultraviolet LED area array light source for using on exposure machine, producer typically requires that its uniformity is at least more than 85%, only meets this index, just can be avoided as much as because of the over-exposed or ill-exposed defect making circuit board open circuit, bridge cut-off occur.
At present, the measurement of the LED area array light source uniformity is still used in the way of pre-test conventional lights source by the producer that uses of major part exposure machine, i.e. 25 points (or 9 points) metering system.So-called 25 points (or 9 points) metering system, refer in the effective irradiation area in lamp source, in surrounding and centre equably, randomly choose 25 points (or 9 points) as test point, and filter out maximum and minima, by minima than the percent obtained by the maximum i.e. uniformity of LED area array light source from the energy values of test.And LED area array light source manufacturer (such as applicant) is before equipment dispatches from the factory, more test point (select 50,80,100 etc. more test points) can be chosen and measure, to guarantee the verity of equipment, effectiveness.
For traditional exposure machine lamp source, its light is sent by a point source or strip source, light path own filters through the integration of various optics again, and the uniformity of energy is affected not quite by light source, uses the metering system of this random selecting point to be substantially feasible.
And for LED area array light source, it is to be formed by multiple LED lamp bead arrays.Because of LED lamp bead itself or workpiece error, there is difference in the energy making each point, environment, artificial factor when adding measurement, and because repetitive measurement makes lamp source light for a long time, cause lamp source to there may be the factors such as uncertain energy attenuation, use the metering system of random selecting point to be difficult to find out the highs and lows of actual energy.On the other hand, for LED area array light source manufacturer, although LED lamp bead can equidistantly array be on area array light source, but affected by various factors, if LED lamp bead is not adjusted, the uniformity of area array light source irradiation face self-energy typically only about 70%.LED area array light source is adjusted by the method according to reconnaissance test, then need to expend substantial amounts of human and material resources so that the production cycle significantly extends.
Therefore, this utility model aims to provide a kind of Apparatus for () and method therefor that can be used for measuring the LED area array energy of light source uniformity, so that its using effect reaches optimum.
Utility model content
Goal of the invention of the present utility model is: measure LED area array light source for the method using reconnaissance test at present, uniformity measurement accuracy is difficult to ensure that, and when using it that LED area array light source is adjusted, the problem needing to expend substantial amounts of human and material resources and time, it is provided that a kind of LED area array light source uniformity measurement apparatus.This utility model can be used in the test of the LED area array energy of light source uniformity, and test result better authenticity and objectivity are, and detection is quick, efficiency is high, measurement result is accurate, intuitively.Meanwhile, this utility model makes the regulation of the LED area array light source uniformity become more convenient, simple and feasible, is effectively improved the uniformity of LED area array light source.
The technical solution adopted in the utility model is as follows:
A kind of LED area array light source uniformity measurement apparatus, including straight-line motion mechanism, detection device, analog signal collector, control system；
Described straight-line motion mechanism includes motion bracket, the motor being arranged on motion bracket, the drivewheel being arranged on machine shaft, the second support being arranged on motion bracket, driven pulley, feed belt, described driven pulley arrange on the secondary support bracket and driven pulley can relative second holder pivots, described feed belt be arranged on drivewheel with on driven pulley and drivewheel can drive feed belt to rotate relative to driven pulley；
Described detection device includes several LED light energy probe, the photoelectric switching circuit detecting support, being arranged on detection support, described detection support is connected with feed belt and feed belt can drive detection support relative motion support to move, and described LED light energy probe is distributed on detection support；
Described LED light energy probe is connected with photoelectric switching circuit, and described photoelectric switching circuit is connected with analog signal collector, and described analog signal collector, motor are connected with control system respectively.
Described straight-line motion mechanism also includes the position sensor being arranged on motion bracket, and described position sensor is connected with control system.
The position of detection support can be passed to control system by described position sensor.
Also including the limit sensors being arranged on motion bracket, described limit sensors is connected with control system.
Described limit sensors is the two ends that a group and limit sensors are separately positioned on motion bracket.
Described LED light energy probe includes light sensitive diode, the optical filter being arranged on light sensitive diode.
Described LED light energy probe is connected with photoelectric switching circuit by many pin plugs.
Described analog signal collector is collection of simulant signal module USB 2851.
Described analog signal collector is connected with control system by USB port.
The method using aforementioned LED area array light source uniformity measurement apparatus to be measured, comprises the steps:
(1) straight-line motion mechanism band motion detection device motion, the intensity of illumination of light source is detected by the LED light energy probe in detection device, and detected value is converted into voltage signal through photoelectric switching circuit；
(2) voltage signal of step 1 is converted into analog signal values through analog signal collector, then analog signal values passes to control system, and control system, according to the relevant position of straight-line motion mechanism, obtains the intensity of illumination of each point in LED area array light source.
In described step 1, the voltage range of LED light energy probe is 0 ~ 10V.
In described step 2, analog signal values is in the range of 0 ~ 100000.
In described step 2, analog signal values is in the range of 0 ~ 20000.
In described step 2, control system sets x value, y value respectively with the position of light source in LED area array light source, with the intensity of respective sources for z value, sets up three-dimensional system of coordinate, obtains the cloud test result of LED area array light source.
For foregoing problems, this utility model provides a kind of LED area array light source uniformity measurement apparatus.Wherein, this device includes straight-line motion mechanism, detection device, analog signal collector, control system, LED light energy probe is connected with photoelectric switching circuit, and photoelectric switching circuit is connected with analog signal collector, and analog signal collector, motor are connected with control system respectively.Straight-line motion mechanism band motion detection device moves, and the signal of detection device detection, after photoelectric switching circuit is converted into voltage, is converted into the analogue value by analog signal collector, and passes to control system, thus determine the uniformity of LED area array light source.
Straight-line motion mechanism includes motion bracket, the motor being arranged on motion bracket, the drivewheel being arranged on machine shaft, the second support being arranged on motion bracket, driven pulley, feed belt, driven pulley arrange on the secondary support bracket and driven pulley can relative second holder pivots, feed belt be arranged on drivewheel with on driven pulley and drivewheel can drive feed belt to rotate relative to driven pulley.Using band structure, straight-line motion mechanism can move along a straight line by band motion detection device, thus is measured the LED light source of diverse location.
Further, also including the limit sensors being arranged on motion bracket, limit sensors is the two ends that a group and limit sensors are separately positioned on motion bracket, and this limit sensors is connected with control system.Use this structure, when the detection support limit sensors through one end, LED area array light source can be opened by control system, when detection device completes to measure, detection support is through the limit sensors of the other end, LED area array light source is closed by control system, thus realizes the automatic shutter of LED area array light source.
Straight-line motion mechanism also includes the position sensor being arranged on motion bracket, and position sensor is connected with control system, can the position of mensuration motion bracket simpler, convenient by position sensor.
Detection device includes several LED light energy probe, the photoelectric switching circuit detecting support, being arranged on detection support, detection support is connected with feed belt and feed belt can drive detection support relative motion support to move, and LED light energy probe is distributed on detection support.Popping one's head in equipped with several LED light energy on detection device, depending on the quantity of LED light energy probe is according to the LED lamp bead quantity of assembling on measured LED area array light source, and LED light energy probe can detect any kind of wavelength that LED lamp bead is sent.
LED light energy probe includes light sensitive diode, the optical filter being arranged on light sensitive diode.Using this structure, optical filter filters out the light of unnecessary clutter length, and the spectrum only allowing detected LED lamp bead to be sent passes through, and is effectively improved the accuracy of measurement result.According to the photocurrent characteristics of light sensitive diode, in the range of certain illuminance, the electric current flowing through light sensitive diode is directly proportional to optical radiation energy, then is arranged by electronic circuit by current signal, can obtain corresponding voltage signal；Therefore, this utility model uses photoelectric switching circuit effectively optical radiation energy can be converted into voltage signal.
Device of the present utility model is as the testing tool of the LED area array light source uniformity, energy single pass also gathers the energy value in whole LED area array light source irradiation breadth, measurement by different azimuth several times, traditional random selecting point method of testing can be replaced completely, make testing result more truly, more comprehensively, more objective, it is effectively improved determination efficiency simultaneously, shortens minute.
Further, this utility model provides a kind of method using aforementioned LED area array light source uniformity measurement apparatus to be measured.The method comprises the steps: that (1) straight-line motion mechanism band motion detection device moves, and the intensity of illumination of light source is detected by the LED light energy probe in detection device, and detected value is converted into voltage signal through photoelectric switching circuit；(2) voltage signal of step 1 is converted into analog signal values through analog signal collector, then analog signal values passes to control system, and control system, according to the relevant position of straight-line motion mechanism, obtains the intensity of illumination of each point in LED area array light source.
Use the method, this utility model can the measurement result (having curve chart, scattergram) of the effective each light probe of analog information, the high point of every a line, low spot can be clearly showed that, facilitate the regulation of LED, intuitively show measurement result.
In sum, this utility model provides a kind of LED area array light source uniformity measurement apparatus, in this device, single or multiple that linearly arrange and vertical with the direction of motion LED light energy that is provided with equidistant on detection support is popped one's head in, detection device is driven by straight-line motion mechanism and does linear uniform motion and receive the irradiation of LED area array light source, radiant light is according to after photoelectric switching circuit is converted into voltage signal, it is converted into analog signal values again by analog signal collector, it is finally converted to simulated view intuitively, the distribution of LED area array energy of light source is made more intuitively to show, its uniformity also can directly measure out simultaneously.Using this utility model, it is possible to Scanning Detction complete LED area array light source light energy in whole irradiated area during within a short period of time, detection is quick, efficiency is high, and result is accurate, and testing result is directly perceived, visual.
Accompanying drawing explanation
This utility model will illustrate by example and with reference to the appended drawing, wherein:
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is partial structurtes schematic diagram of the present utility model.
Fig. 3 is that single light sensitive diode voltage signal exports electrical schematic diagram.
Fig. 4 is whole the LED area array energy of light source distribution schematic diagram measured.
Fig. 5 is the LED area array light source single-row Energy distribution schematic diagram measured.
Labelling in figure: 1 is straight-line motion mechanism, 2 is detection device, and 3 is analog signal collector, and 4 is control system, and 5 is LED area array light source, and 6 is motion bracket, and 7 is motor, and 8 pop one's head in for LED light energy, and 9 is limit sensors.
Detailed description of the invention
Below in conjunction with the accompanying drawings, this utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
Embodiment 1
As it can be seen, this LED area array light source uniformity measurement apparatus, including straight-line motion mechanism, detection device, analog signal collector, control system.Straight-line motion mechanism includes motion bracket, the motor being arranged on motion bracket, the drivewheel being arranged on machine shaft, the second support being arranged on motion bracket, driven pulley, feed belt, driven pulley arrange on the secondary support bracket and driven pulley can relative second holder pivots, feed belt be arranged on drivewheel with on driven pulley and drivewheel can drive feed belt to rotate relative to driven pulley.Detection device includes several LED light energy probe, the photoelectric switching circuit detecting support, being arranged on detection support, detection support is connected with feed belt and feed belt can drive detection support relative motion support to move, and LED light energy probe is distributed on detection support.LED light energy probe is connected with photoelectric switching circuit, and photoelectric switching circuit is connected with analog signal collector, and analog signal collector, motor are connected with control system respectively.
In the present embodiment, also including the limit sensors being arranged on motion bracket, being connected with control system, limit sensors is separately positioned on the two ends of motion bracket.In the present embodiment, the position of limit sensors is adjusted by the width in LED area array light source actual irradiation face.Control system starts motor, feed belt drives the LED light energy probe setting in motion on detection support, when LED light energy probe contacts to LED area array light irradiation edge, face, limit sensors on straight-line motion mechanism produces signal, make LED area array light source igniting, meanwhile, detection device, analog signal collector are started working.
Straight-line motion mechanism drives LED light energy probe to continue motion, the different light energy change every time sensed is transferred to photoelectric switching circuit by LED light energy probe, the light energy signal of change is converted into corresponding voltage signal by photoelectric switching circuit, then gathered the voltage signal of photoelectric switching circuit change by analog signal collector, be converted into analog signal values.Finally, analog signal values is passed to control system process by analog signal collector.In the present embodiment, control system can set x value, y value respectively with the position of light source in LED area array light source, with the intensity of respective sources for z value, sets up three-dimensional system of coordinate, obtains the cloud test result (analog image the most intuitively) of LED area array light source.When LED light energy probe movement to LED area array light irradiation edge, face, limit sensors produces signal again, makes LED area array light source, photoelectric switching circuit, analog signal collector close, and measurement terminates.
In the present embodiment, choosing the quantity of LED light energy probe according to different irradiated areas, uniform array is arranged on detection support, is uniformly controlled by pin plug more than.In the present embodiment, photoelectric switching circuit is as it is shown on figure 3, by selecting corresponding photodiode, arrange the signal of change by electronic circuit, it is thus achieved that the voltage signal of 0 10V.The real-time 0 10V voltage signal of multichannel opto-electronic conversion obtained again, is gathered analog signal values by analog signal collector USB 2851.USB
2851 by USB port and control system communication, to reach the transmission of energy datum.
In the present embodiment, the voltage signal of real-time 0 10V that LED light probe is produced by USB 2851 acquisition module is converted to the simulation value of 0 20000, this numerical value and voltage signal one_to_one corresponding (example: when voltage signal is 5V, USB
2851 numerical value gathered are 10000).The data that the simulation value of acquisition and other LED energy meter record are contrasted and demarcate, the LED illumination energy value that we are required can be obtained.USB
2851 acquisition module acquisition rates are 20 times/second, and acquisition precision is at least 0.01V.
Fig. 4 gives certain whole LED area array energy of light source distribution schematic diagram, and Fig. 5 gives certain LED area array light source single-row Energy distribution schematic diagram.In Fig. 4, Fig. 5, color is more deeply felt and is shown that energy is the lowest, and the data on right side are shown as the mean values of corresponding light energy.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (7)
1. a LED area array light source uniformity measurement apparatus, it is characterised in that include straight-line motion mechanism (1), detection device (2), analog signal collector (3), control system (4)；
Described straight-line motion mechanism (1) includes motion bracket (6), the motor (7) being arranged on motion bracket (6), the drivewheel being arranged in motor (7) rotating shaft, the second support being arranged on motion bracket (6), driven pulley, feed belt, described driven pulley arrange on the secondary support bracket and driven pulley can relative second holder pivots, described feed belt be arranged on drivewheel with on driven pulley and drivewheel can drive feed belt to rotate relative to driven pulley；
Described detection device (2) includes several LED light energy probe (8), the photoelectric switching circuit detecting support, being arranged on detection support, described detection support is connected with feed belt and feed belt can drive detection support relative motion support (6) mobile, and described LED light energy probe (8) is distributed on detection support；
Described LED light energy probe (8) is connected with photoelectric switching circuit, and described photoelectric switching circuit is connected with analog signal collector (3), and described analog signal collector (3), motor (7) are connected with control system (4) respectively.
LED area array light source uniformity measurement apparatus the most according to claim 1, it is characterised in that also including the limit sensors (9) being arranged on motion bracket (6), described limit sensors (9) is connected with control system (4).
LED area array light source uniformity measurement apparatus the most according to claim 2, it is characterised in that described limit sensors (9) is the two ends that a group and limit sensors (9) are separately positioned on motion bracket (6).
4. according to LED area array light source uniformity measurement apparatus described in any one of claim 1 ~ 3, it is characterised in that described LED light energy probe (8) includes light sensitive diode, the optical filter being arranged on light sensitive diode.
5. according to LED area array light source uniformity measurement apparatus described in any one of claim 1, it is characterised in that described LED light energy probe (8) is connected with photoelectric switching circuit by many pin plugs.
LED area array light source uniformity measurement apparatus the most according to claim 1, it is characterised in that described analog signal collector (3) is collection of simulant signal module USB
2851。
7. according to LED area array light source uniformity measurement apparatus described in claim 1 ~ 3,5,6 any one, it is characterized in that, described straight-line motion mechanism (1) also includes the position sensor being arranged on motion bracket (6), and described position sensor is connected with control system (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620148246.8U CN205483497U (en) | 2016-02-29 | 2016-02-29 | Even measuring device of LED area array light source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620148246.8U CN205483497U (en) | 2016-02-29 | 2016-02-29 | Even measuring device of LED area array light source |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510006A (en) * | 2016-02-29 | 2016-04-20 | 四川聚能核技术工程有限公司 | Device and method for measuring evenness of LED area array light source |
| CN107389318A (en) * | 2017-08-01 | 2017-11-24 | 赵淑娟 | A kind of LED light source detection method and system |
| CN107392924A (en) * | 2017-08-01 | 2017-11-24 | 李贺满 | A kind of LED light source multi-region area detecting method and system |
| CN112985595A (en) * | 2021-03-25 | 2021-06-18 | 青岛天仁微纳科技有限责任公司 | UV lamp monitoring device for nanoimprint equipment and monitoring method thereof |
-
2016
- 2016-02-29 CN CN201620148246.8U patent/CN205483497U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510006A (en) * | 2016-02-29 | 2016-04-20 | 四川聚能核技术工程有限公司 | Device and method for measuring evenness of LED area array light source |
| CN107389318A (en) * | 2017-08-01 | 2017-11-24 | 赵淑娟 | A kind of LED light source detection method and system |
| CN107392924A (en) * | 2017-08-01 | 2017-11-24 | 李贺满 | A kind of LED light source multi-region area detecting method and system |
| CN107392924B (en) * | 2017-08-01 | 2020-12-01 | 宿迁市创盈知识产权服务有限公司 | LED light source multi-region detection method and system |
| CN112985595A (en) * | 2021-03-25 | 2021-06-18 | 青岛天仁微纳科技有限责任公司 | UV lamp monitoring device for nanoimprint equipment and monitoring method thereof |
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Effective date of registration: 20180504 Address after: 621700 Huafeng new village, Jiangyou City, Mianyang, Sichuan Province, No. 9 Patentee after: Inst. of Materials, Chinese Academy of Engineering Physics Address before: 621700 De Sheng Nan Road, Jiangyou City, Mianyang, Sichuan Province, No. 87 Patentee before: Sichuan Juneng Nuclear Technology Engineering Co., Ltd. |
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Granted publication date: 20160817 Termination date: 20200229 |