KR101374880B1 - Apparatus for testing LED - Google Patents

Abstract

The present invention provides an LED inspection apparatus capable of improving the inspection speed of the LED lighting test or the optical characteristic test and increasing the accuracy of the lighting test or the optical property test. To this end, the present invention is a module mounting portion to which the LED module having at least one LED element is mounted, the module mounting portion is introduced and discharged, the inspection chamber in which the lighting inspection or optical characteristics of the LED module is performed in the interior space, the inspection chamber A transfer unit for introducing the module mounting part into the inside and discharging the module mounting part to the outside of the inspection chamber after the lighting test or the optical characteristic test is completed, and provided in the inspection chamber to measure light emitted from the LED module And a measuring unit for measuring whether the LED element is turned on or optical characteristics, and a control unit for controlling the module mounting unit to stop at a predetermined position inside the inspection chamber.

Description

LED testing device {Apparatus for testing LED}

The present invention relates to an LED inspection apparatus, and more particularly, to an LED inspection apparatus that can efficiently perform the LED lighting inspection or optical characteristics inspection.

A light emitting diode used as a light source, or LED, refers to a semiconductor device used to send and receive signals by converting electrical signals into infrared or light.

The LED has high luminous efficiency, high output at low current, fast response speed, and can be modulated by high frequency pulse operation. In addition, the LED is an environmentally friendly light source that can easily change the light output by the current control and can produce a variety of colors.

Due to these advantages, the LED is widely used in electronics, home appliances, remote controls, automobiles, electronic signs, various automation devices, traffic lights, lighting fixtures, and the like.

On the other hand, it is checked whether the LEDs are manufactured according to the requirements before being used for the desired use. During this inspection, an inspection is carried out to check whether each LED is properly lit and to analyze optical characteristics such as the amount of light and color temperature of the LEDs. There is a test.

The lighting test for the LED is to supply power to each LED, and then to check whether each LED is properly lit to check whether the lighting is in good condition.

However, in the conventional LED lighting test, since the operator visually checks whether the LED is lit, the inspection speed is slow and there is a limit in the inspection accuracy.

On the other hand, an integrating sphere is generally used to check the optical properties of the LED. The integrating sphere is a hollow apparatus coated with a material having a high reflectance therein, so that the light emitted from the LED is diffusely reflected on the inner sphere of the integrating sphere by placing the LED inside the integrating sphere and applying power. By measuring the optical characteristics of the LED.

However, in the case of measuring the optical characteristics of the plurality of LED modules using a conventional integrating sphere, one LED module to be measured is located inside the integrating sphere to measure the optical characteristics of the LED module, and then measured Since the LED module to be removed and the newly placed LED module to be newly placed inside the integrating sphere have to be repeatedly performed by manual operation, there is a problem in that the optical characteristic measurement time takes a long time.

Specification identification numbers <38>, <39>, <40>, <41>, and <42> of Korean Patent Publication No. 10-2009-0087246

The problem to be solved of the present invention is to provide an LED inspection apparatus that can improve the inspection speed of the LED lighting test or optical characteristic test, and improve the accuracy of the lighting test or optical property test.

In order to solve the above-described problems, the present invention is a module mounting portion to which the LED module having at least one LED element is mounted, the module mounting portion is introduced and discharged, the inspection that the lighting test or the optical properties of the LED module is performed in the interior space A transfer unit for introducing the module mounting portion into the chamber and the inspection chamber, and discharging the module mounting portion to the outside of the inspection chamber after the lighting inspection or the optical characteristic inspection is finished, and the LED module is provided inside the inspection chamber. An LED inspection apparatus including a measuring unit measuring whether light of the LED element is turned on or an optical characteristic thereof, and a control unit controlling the module mounting unit to stop at a predetermined position inside the inspection chamber. to provide.

The measuring unit compares the measured individual light quantity values of the LED elements existing in the ROI of the measuring unit with reference information of the LED elements to determine the number of LED elements in a normal lighting state, and emits light of the LED elements. And a calculation processor configured to determine a position of the LED device having a poor lighting state by comparing a center coordinate value of the control unit with reference information of the LED devices.

The operation processor may first align the light quantity values in the normal range among the measured individual light quantity values of the LED elements to determine the number of the LED elements having a normal lighting state, and based on the center coordinate values of the light emitting images of the LED elements. As a result, the measured light quantity values of the LED elements may be secondarily aligned on a predetermined virtual region to detect the position of the LED element having a poor lighting state.

In addition, when the first region of interest and the second region of interest of the measurement unit overlap with each other, the arithmetic processing unit may predetermine the emission image of the LED elements existing in the first region of interest from one side to the other. Image processing is performed by the number of rows of a predetermined arrangement area, and for the light emitting image of the LED elements existing in the second region of interest, the number of rows of the predetermined arrangement area in the one direction from the other direction As long as the image can be processed.

On the other hand, the measuring unit is an optical characteristic measuring instrument, the optical characteristic measuring apparatus may be further provided with a baffle for blocking the scattered light in which the light emitted from the LED module is introduced into the optical characteristic measuring instrument.

In addition, the measuring unit measures the amount of light and color information of the light emitted from the LED module, and compares the amount of light and color information measured by the measuring unit with the reference information of the LED element or the LED module or the LED element or The LED module may include an optical characteristic processor for determining whether or not the optical characteristic of the LED module is normal.

The LED inspection apparatus may further include a power supply unit which is electrically connected to the module mounting unit and the LED module, and supplies power to the module mounting unit to supply power to the LED module.

The control unit may include a position sensor for sensing a position of the module mounting unit and a stopper for stopping the module mounting unit when the position sensor detects that the module mounting unit is located at a correct position inside the inspection chamber. .

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Referring to the effect of the LED inspection device according to the present invention.

First, by efficiently performing the lighting test or optical characteristic test for the LED has the advantage of reducing the time required for the lighting test or optical characteristic inspection and increase the productivity.

Second, the lighting test for the LED may be performed by measuring the number of LED elements included in the LED module using the measuring unit and the control unit, and detecting the position of the LED device having a poor lighting state, thereby performing a more accurate lighting test. There is an advantage.

1 is a view showing a first embodiment of the LED inspection apparatus according to the present invention.
Figure 2 is a view showing the LED module is mounted to the module mounting portion provided in the LED inspection device of FIG.
3 is a view showing a region of interest of a measurement unit provided in the LED inspection device of FIG.
FIG. 4 is a view illustrating a state of primary alignment based on a part of a light emitting image measured by a measuring unit included in the LED inspection apparatus of FIG. 1 and the center coordinates of the light emitting image.
5 is a view showing another LED module is mounted to the module mounting portion provided in the LED inspection device of FIG.
6 is a view showing a region of interest of a measurement unit for the LED module of FIG.
FIG. 7 is a view illustrating a part of the measured emission image of the LED module of FIG. 5 and the state in which the emission image is primarily aligned with respect to center coordinates. FIG.
8 is a view showing a second embodiment of the LED inspection apparatus according to the present invention.

With reference to the accompanying drawings, it will be described an LED inspection apparatus according to the present invention.

1 to 4, the first embodiment of the LED inspection apparatus according to the present invention will be described in detail.

The LED inspection apparatus according to the present embodiment is a device for checking whether the LED elements are turned on.

The LED inspection device is a test chamber 30 that the module mounting portion 60, the module mounting portion 60 is inserted and discharged is mounted, the LED module having one or more LED elements, the lighting chamber of the LED module is performed in the interior space The transfer unit for introducing the module mounting portion 60 into the inspection chamber 30 and discharging the module mounting portion 60 to the outside of the inspection chamber after the lighting test is finished, the inspection chamber 30 inside Is provided in the measuring unit 33 for measuring the light emitted from the LED module to measure whether the LED element is turned on, and the module mounting portion 60 is stopped in a predetermined position inside the inspection chamber 30 And a control unit for controlling to

The control unit has a position sensor 75 for sensing the position of the module mounting portion 60, and the module mounting portion 60 is located in the correct position inside the inspection chamber 30 by the position sensor 75 If it is detected that includes a stopper 70 for stopping the module mounting portion (60).

The module mounting unit 60 is mounted with an LED module 100 having one or more LED elements, and the module mounting unit 60 is transferred to the inspection chamber 30 by the transfer unit.

Specifically, the module mounting portion 60 is introduced into the inspection chamber 30 through the inlet portion 31 formed in the inspection chamber 30, the LED module 100 mounted on the module mounting portion 60 The light emitted from is measured by the measuring unit 33.

A locking groove 63 is formed at the center of both ends of the module mounting part 60, and the stopper 70 is selectively caught in the locking groove 63.

In addition, the connection member 65 is provided at both ends of one end of the module mounting unit 60, and coupling grooves 67 are formed at both ends of the module mounting unit 60 to be coupled to the connection member of another module mounting unit. As a result, the plurality of module mounting portions can be continuously connected by the coupling of the respective connecting members and the respective defect grooves.

On the other hand, the module mounting portion 60 introduced into the inspection chamber 30 is detected by the position sensor 75 is positioned in the correct position as the stopper 70 is operated.

The position sensor 75 is installed at the lower end of the inspection chamber 30, it may be installed in the lower portion of the center moving line to which the module mounting portion 60 is moved. In detail, the position sensor 75 may be provided at a position corresponding to the locking groove 63 of the module mounting unit 60.

Here, the position sensor 75 detects whether or not the module mounting unit 60 is located in the correct position. The exact position means a preferred position where the module mounting part 60 should be positioned so that the light emitted from the LED module can be positioned in the ROI to be measured by the measuring unit 33.

When the module 60 is detected by the position sensor 75 in the correct position, the stopper 70 stops the module 60.

The stopper 70 may include a rotation part 71 having one end axially coupled to rotate, and a support part 73 provided at the other end of the rotation part 71.

The support portion 73 moves upward as the rotary portion 71 rotates to constrain the locking groove 63 to stop the transfer of the module mounting portion 60 or move downward to move the locking groove 63. And is released to resume the transfer of the module mounting part 60.

When the lighting test by the measuring unit 33 is finished, the module mounting unit 60 is discharged to the outside of the inspection chamber 30 through the outlet 35 formed in the inspection chamber 30.

On the other hand, the inspection chamber 30, the display unit 36 for indicating the start of the lighting inspection of the LED module 100, and the like, and the light indicator (37) for indicating the good / bad of the tested LED module ) May be provided.

In addition, the inspection chamber 30 may further include a power supply unit for supplying power to the module mounting unit 60 to supply power to the LED module. Here, the module mounting portion 60 and the LED module 100 is electrically connected.

The other end of the module mounting unit 60 may be provided with an outlet 68 connected to the power applying unit. Of course, the power supply unit may be made of a replaceable power supply (for example, a battery).

When the module mounting unit 60 is located in the correct position, the power applying unit is in contact with the module mounting unit to apply power, and there is an advantage that the module mounting unit 60 does not interfere with the transfer.

On the other hand, the measuring unit 33 is an image photographing device for photographing the light emitted from the LED module 100 mounted on the module mounting portion 60 introduced into the inspection chamber 30, and measured in the image photographing device It includes a calculation processing unit for processing the measurement data.

A charge-coupled device (CCD) camera may be used as the image capturing apparatus, and the image capturing apparatus is disposed above the inside of the inspection chamber 30.

The operation processor receives the measurement data measured by the image photographing apparatus and processes the data in the form of desired information. The operation processor may be built in the image capturing apparatus, but may be electrically connected to the image capturing apparatus in a separated state.

The calculation processor compares the measured individual light quantity values of the LED elements existing in the ROI of the measurement unit 33 with reference information of the LED elements to determine the number of LED elements in a normal lighting state. By comparing the center coordinates of the light emission image and the reference information of the LED elements to determine the position of the LED element is a poor lighting state.

In this case, the reference information of the LED elements includes characteristic values that a normal LED element has, for example, wavelength information such as color coordinates, half-width, center wavelength, color temperature, dominant wavelength and color rendering index, light quantity information, and product information. do.

In addition, the operation processor may first arrange the light quantity values in the normal range among the measured individual light quantity values of the LED elements to determine the number of the LED elements having a normal lighting state, and to determine the center coordinate values of the light emitting images of the LED elements. Based on these, the measured light quantity values of the LED elements are second-arranged on a predetermined virtual region to detect the position of the LED element having a poor lighting state.

In addition, the calculation processing unit may have a light emitting image of the LED elements existing in the first region of interest when the first region of interest and the second region of interest of the measurement unit 33 overlap each other in one direction. Image processing by the number of rows of a predetermined arrangement area in a direction, and for a light emitting image of the LED elements existing in the second region of interest, a row of a predetermined arrangement area in the one direction from the other direction Image processing can be performed.

Hereinafter, the LED module 100 has a size of 600 x 600 mm, and has a total of 196 LED elements 101, each of which is provided with 14 pieces in the horizontal and vertical directions, and two LED modules 100. The case where this is conveyed adjacently is demonstrated as an example.

When the two LED modules 100 are transported adjacently, the LED module has a size of 1200 x 600 mm.

In this case, the measurement unit 33 is to take a light emission image of the LED module 100 present in the region of interest (R), wherein the region of interest (R) may be a size area of 600 x 600 mm, More specifically, it may be an area slightly larger than the size area of 600 × 600 mm.

Accordingly, the measuring unit 33 divides and measures the LED module 100 having a size of 1200 x 600 mm twice.

To this end, the stopper 70 places the LED module in position so that the LED module 100a provided in the front of the conveying direction can be measured by the measuring unit 33 first, and then the rear of the conveying direction. The LED module 100 is provided in the position so that the LED module 100 can be measured.

On the other hand, the light emitting image 110 in which the LED elements (101aa ... 101ce) present in the region of interest (R) of the measuring unit 33 is measured is finely bent to both sides with respect to the center of the center image is distorted Can be.

In this case, it is preferable that the arithmetic processing unit performs a primary alignment in which the information of the light-emitting image 110 measured based on one coordinate axis, for example, individual light quantity values are arranged in a line.

In this case, each of the LED elements may be sequentially aligned with respect to any one coordinate on the two-dimensional coordinate axis (first and second reference coordinate axes (X, Y)) of the ROI.

For example, the calculation processing unit may refer to the center coordinate values of the light emitting images of the LED elements 101aa ... 101ce in order of the values of the second reference coordinate axis Y of the light emitting image 110 in a row in order. Can be placed as.

In this case, the operation processor may be configured to compare the normal amount of light value with the reference information of the LED elements among the measured individual light quantity values of the LED elements, for example, the light amount values in the normal range where the LED element is in a normal state. Place only measurements with.

In addition, the operation processor may determine the lighting failure number of the LED element by comparing the measured light quantity values determined to be the normal range with the reference information of the LED module 100, that is, the number of mounted LED elements.

Therefore, even though the number of mounted LED elements is 196, when the number of first ordered numbers is 195, one LED element 101bb may be determined to have brightness belonging to a condition that is not listed (bad condition). In this way, the LED element 101bb is determined to be defective.

Subsequently, in order to detect the position of the defective LED element 101bb, the control unit may be configured to display the light emitting image 110 of the LED elements on the virtual area based on the center coordinate values of the light emitting image 110 of the LED elements. It is desirable to second order the information about the data.

In addition, the control unit stores the second ordered information including a predetermined arrangement area and the LED elements 101aa... 101ce so as to correspond to the emission image 110 measured by the measuring unit 33. Will be compared.

In this case, the LED element 101bb determined to be defective is not displayed on the placement area, and thus, an accurate position of the LED element 101bb determined to be defective can be detected.

1, 5 to 7, a case in which another LED module is mounted in the first embodiment of the LED inspection apparatus according to the present invention will be described.

The LED module 200 may form a long rectangular shape in one direction.

For example, the LED module 200 may have a size of 1200 x 300 mm, and may have a total of 196 LED elements 201 provided with 28 in the horizontal direction and 7 in the vertical direction. .

In addition, the LED module 200 may be transferred to the inspection chamber 30 in a state in which one or more are arranged in the vertical direction.

Hereinafter, the two LED modules 200 will be described as being mounted and transported side by side.

As described above, when the two LED modules 200 are transported adjacently, the LED module has a size of 1200 x 600 mm as a whole.

In this case, the measurement unit 33 measures the emission image of the LED module 200 existing in the ROI, where the ROI may be a size area of 600 x 600 mm, and more specifically, 600 x 600 It may be an area slightly larger than the size area of mm.

Therefore, the measuring unit 33 measures the LED module 200 having a size of 1200 x 600 mm to be transferred twice.

That is, the region of interest may include a first region of interest R1 and a second region of interest R2, and the first region of interest R1 and the second region of interest R2 overlap each other. May have (R3).

The stopper 70 positions the LED module 200 in position so that a part of the LED module 200 enters the first region of interest R1 and can be measured by the measuring unit 33. The LED module 200 is placed in position so that another portion of the LED module 200 can be measured by being entered into the second region of interest R2.

On the other hand, the calculation processor is configured to display information of the light emitting image 210 in which the LED elements 201aa ... 201cg of the LED module 200 existing in the first region R1 of the measurement unit 33 are measured. It is preferable to perform the primary alignment arranged in a line with respect to any one coordinate axis.

In this case, it is preferable that the operation processor processes the image processing of the light emitting image 210 by the number of rows of a predetermined arrangement area from one direction to the other direction (from right to left).

For example, the calculation processing unit may include two-dimensional coordinate axes (first and second criteria) for the seven LED elements 201aa to 201ag provided in the rightmost column of the emission image 210 to the LED elements of the 14th column in the left direction. Based on the coordinates of one side on the coordinate axis (X, Y), it can be arranged in a line with reference to the center coordinate values of the light emitting image of each of the LED elements (201aa ... 201cg ...).

Next, by comparing the measured light quantity values determined to be the normal range with the reference information of the LED module 200, that is, the number of mounted LED elements, it is possible to determine the number of lighting failures of the LED elements.

Accordingly, when the number of first measured measured light quantity values is smaller than the reference information of the LED module 200, that is, the number of mounted LED elements (196), the number of LED elements as small as possible is not listed. It may be determined to have brightness belonging to the (bad condition), and through this, it is possible to know the number of defective LED elements.

Subsequently, in order to detect the position of the defective LED element 201bc, the control unit performs secondary alignment of information on the emission image of the LED elements on the virtual region based on the center coordinate values of the emission images of the LED elements. It is preferable to.

In addition, the calculation processing unit may compare a predetermined arrangement area with the secondary alignment information so as to correspond to the emission image 210 measured by the measurement unit 33, and through this, the LED element 201bc that is determined to be defective. The exact position of) can be detected.

Thereafter, the module mounting unit 60 may move forward to measure the second region R2, and the lighting test may be performed in the same manner as described above.

That is, the calculation processing unit preferably processes the image processing of the light emitting image 210 by the number of rows of a predetermined arrangement area in one direction (from left to right) from the other direction.

Accordingly, the calculation processing unit may be configured based on the coordinates of one side of the two-dimensional coordinate axis of the seven LED elements provided in the leftmost column of the light emitting image 210 to the LED elements of the 14th column in the right direction. The center coordinate values of the light emitting image may be arranged in a line.

As a result, overlapping inspection of the LED elements existing in the region R3 in which the first and second regions of interest R1 and R2 overlap each other may be prevented, thereby increasing reliability of the inspection results.

In addition, it is possible to determine the number and position of the LED element of the lighting failure of the LED element of the second region of interest (R2) through the method as described above.

Referring to the inspection method of the LED inspection device described above is as follows.

First, an LED module having one or more LED elements is mounted to the module mounting unit 60.

Next, the module mounting portion 60 is transferred into the inspection chamber 30 through the inlet portion 31 of the inspection chamber. Here, the module mounting unit 60 may be transported by a transport unit including a conveyor belt, or may be manually transported by a user.

Next, a stop step of stopping the module mounting unit 60 at a predetermined position inside the inspection chamber 30 is performed. In detail, the position sensor 75 senses the position of the module mounting unit 60 in the inspection chamber 30.

When it is detected that the module mounting part 60 is located at the correct position inside the inspection chamber 30, the stopper 70 stops the module mounting part 60.

Next, power is supplied to the module mounting unit 60 by a power supply unit.

Next, the measuring unit 33 provided inside the inspection chamber 30 measures whether the LED element is turned on.

Here, the measuring unit 33 captures light emitting images of the LED elements existing in the ROI. Then, the calculation processing unit performs a first order alignment in which the light quantity values of the LED elements existing in the ROI of the measuring unit 33 are arranged in a row, and the lighting state is poor compared to the reference information of the LED elements. The number of LED elements is measured.

In addition, the operation processor may determine the position of the LED element by comparing the center coordinates of the photographed light emitting image with a predetermined arrangement area corresponding to the light emitting image.

In detail, the operation processor may second-align the information about the light-emitting images of the LED elements on the virtual area based on the center coordinate values of the light-emitting images of the LED elements that are primarily aligned.

Next, when the light emitting image of the LED elements does not exist in a predetermined arrangement region, the operation processor determines that the LED elements corresponding to the arrangement region are in a poor lighting state. Through this, the position of the LED element having a poor lighting state can also be accurately identified.

Here, the region of interest of the measurement unit 33 is divided into a first region of interest R1 and a second region of interest R2, and the first region of interest R1 and the second region of interest R2 When overlapping, the first ROI is measured first.

In this case, the calculation processing unit performs image processing on the light emitting image of the first ROI by performing image processing on the number of rows of the predetermined arrangement area from one side to the other direction (from right to left). Thereafter, the number of LED elements having a poor lighting state is measured by comparing with the reference information of the LED elements.

In addition, the calculation processing unit performs secondary alignment of information on the light emission images of the LED elements on the virtual area based on the center coordinate values of the light emission images of the first ROI that are primarily aligned.

Next, when the light emission image of the first region of interest R1 does not exist in a predetermined arrangement region, the operation processor determines that the LED element corresponding to the arrangement region is in a poor lighting state. In other words, the position of the LED element having a poor lighting state is determined by comparing the center values of the light emitting image with reference information of the LED elements.

Next, the transfer unit transfers the module mounting unit 60, and the stopper 70 operates when it is detected by the position sensor 75 that the module mounting unit 60 is located at a second correct position. The module mounting unit 60 is stopped.

Next, the measurement unit 33 measures the light emission image of the LED elements present in the second region of interest R2.

In this case, the operation processing unit performs image processing on the light-emitting image of the second ROI R2 with respect to the number of rows of the predetermined arrangement area from the other direction in one direction (from left to right). After that, the number of LED elements having a poor lighting state is measured by comparing with reference information of the LED elements.

Similarly, the calculation processing unit performs secondary alignment of information on the light emission images of the LED elements on the virtual area based on the center coordinate values of the light emission images of the second ROI that are primarily aligned.

Next, when the light emission image of the second region of interest R2 does not exist in the predetermined arrangement region, the operation processor determines that the LED element corresponding to the arrangement region is in a poor lighting state. In other words, the position of the LED element having a poor lighting state is determined by comparing the center values of the light emitting image with reference information of the LED elements.

Next, the module mounting part 60 is discharged through the outlet part 35 of the inspection chamber after the lighting test is completed in the inspection chamber 30.

Referring to Figure 8, a second embodiment of the LED inspection apparatus according to the present invention will be described. The LED inspection apparatus according to the present embodiment is a device for measuring the optical characteristics of the LED element. Hereinafter, the transfer unit, the inspection chamber, the control unit, and the module mounting portion provided in the LED inspection apparatus according to the first embodiment described above are substantially the same as the configuration provided in the LED inspection apparatus according to the present embodiment, and thus the detailed description thereof will be omitted. do.

The measuring unit 333 provided in the LED inspection apparatus is an optical characteristic measuring instrument. For example, the measuring unit 333 spectroscopy the light introduced through the slit (not shown) by using a prism and receiving the light to compare the standard spectroscopic information using each CCD sensor to determine the characteristics of the light Can be.

The spectrometer is subjected to various optical property checks for light emitted from the LED module. For example, the spectroscope may perform various optical measurements including wavelength information such as color coordinates, half-width, center wavelength, color temperature, dominant wavelength, and color rendering index and light quantity information with respect to light generated from the LED module.

On the other hand, the optical characteristic meter is provided with a baffle 350 to block the scattered light from which the light emitted from the LED module is introduced into the optical characteristic meter.

The baffle 350 may have a plurality of diaphragms 351 therein, and the scattered light may be blocked by the diaphragms 351 so that only light emitted from the LED element 301 may be introduced into the spectrometer. have.

In addition, the measurement unit 333 measures light source information including light quantity and color information of light emitted from the LED module, and compares the light source information with reference information of the LED element or the LED module to determine the LED element. Or an optical characteristic processing unit for determining or classifying whether the optical characteristic of the LED module is normal.

Of course, the optical characteristic processing unit may be built in the measuring unit, may be disposed separately as a separate component and electrically connected to the measuring unit.

As a result, the optical characteristic processor compares the light source information of the light emitted from the LED module with reference information of the LED element or the LED module to determine whether or not the optical characteristic of the LED element or the LED module is normal. You decide.

The present invention is not limited to the above-described embodiment, and the LED inspection apparatus according to the first embodiment and the LED inspection apparatus according to the second embodiment may be continuously implemented in one LED inspection system.

As described above, the present invention is not limited to the above-described specific preferred embodiments, and various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention as claimed in the claims. And such variations are within the scope of the present invention.

30: inspection chamber 33,333: measuring unit
60: module mounting portion 63: locking groove
65: connecting member 67: coupling groove
70: stopper 75: position sensor
101, 101aa ... 101ce, 201, 201aa ... 201cg, 301: LED element
110,210: luminous image 350: baffle
351: diaphragm

Claims (14)

A module mounting unit to which an LED module having one or more LED elements is mounted;
An inspection chamber through which the module mounting part is introduced and discharged, and which checks lighting or optical characteristics of the LED module in an inner space;
A transfer unit which introduces the module mounting portion into the inspection chamber and discharges the module mounting portion to the outside of the inspection chamber after the lighting inspection or the optical characteristic inspection is finished;
A measurement unit provided in the inspection chamber and measuring light emitted from the LED module to measure whether the LED element is turned on or optical characteristics; And,
It includes a control unit for controlling the module mounting portion to stop at a predetermined position inside the inspection chamber,
One end portion of the module mounting portion is provided with a connection member, the other end is formed with a engaging groove coupled with the connection member of the other module mounting portion to follow,
The measuring unit includes a calculation processing unit for comparing the center coordinate value of the light emitting image of the LED elements and the reference information of the LED elements to determine the position of the LED element is a poor lighting state,
The calculation processing unit is arranged in a predetermined direction from one side to the other with respect to the light emitting image of the LED elements existing in the first region of interest when the first region of interest and the second region of interest of the measurement unit overlap. Image processing by the number of rows of the area, and for the light-emitting image of the LED elements present in the second region of interest as much as the number of rows of the predetermined arrangement area from the other direction to the one direction LED inspection apparatus, characterized in that the processing. The method of claim 1,
The calculation processing unit compares the measured individual light quantity value of the LED elements present in the ROI of the measuring unit with the reference information of the LED elements to determine the number of LED elements in the normal lighting state . 3. The method of claim 2,
The operation processor may first align the light quantity values in the normal range among the measured individual light quantity values of the LED elements to determine the number of the LED elements having a normal lighting state, and based on the center coordinate values of the light emitting images of the LED elements. And secondly aligning measured light quantity values of the LED elements on a predetermined virtual region to detect a position of the LED element having a poor lighting state. delete The method of claim 1,
The measuring unit is an optical characteristic measuring device, LED inspection apparatus, characterized in that the optical characteristic measuring instrument further comprises a baffle for blocking the scattered light scattered by the light emitted from the LED module to the optical characteristic measuring instrument. The method of claim 1,
The measuring unit measures light source information including light quantity and color information of light emitted from the LED module, and compares the light source information with reference information of the LED element or the LED module to determine the LED element or the LED module. LED inspection apparatus including an optical characteristic processing unit for determining or determining the optical characteristic is normal. The method according to any one of claims 1 to 3, 5, and 6,
The module mounting unit and the LED module is electrically connected to the LED inspection device further comprises a power supply unit for applying power to the module mounting unit for supplying power to the LED module. The method according to any one of claims 1 to 3, 5, and 6,
The control unit includes an LED sensor including a position sensor for sensing the position of the module mounting unit and a stopper for stopping the module mounting unit when the position sensor detects that the module mounting unit is located at the correct position inside the inspection chamber. Device. delete delete delete delete delete delete

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