LED wavelength and brightness testing device

Abstract

The utility model relates to an LED wavelength and brightness testing device which comprises a jig box, a product mainboard, a PC, an ICAT LED tester and a programmable power supply. A lamp panel placement groove is formed in the top of the jig box, a plurality of detection through holes are distributed in the bottom of the lamp panel placement groove, and a lighting probe is embedded and fixed to the lower end of each detection through hole; the ICAT LED tester is used for testing the brightness and wavelength of lamp beads of the LED lamp panel, the ICAT LED tester is arranged in a cavity in the jig box, and the lighting probes are connected to the ICAT LED tester through optical fibers; the product mainboard is used for controlling the LED lamp panel to emit light and switch colors, and the product mainboard is arranged on the top of the jig box. According to the utility model, professional brightness and wavelength testing devices are used to improve the consistency of brightness and chroma functions of the LED lamp beads and reduce bad leakage. Meanwhile, the test fixture box is adopted to replace manual test, so that the complexity of assembling, plugging and pulling wires can be reduced, the working hours are reduced, and the production efficiency and quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED testing, in particular to a device for testing the wavelength and brightness of an LED. Background Art

[0002] When SMT (Surface Mount Technology) tests regular or irregular PCBA light boards or light strips composed of multiple LED lamp beads, the brightness (intensity) and whether there is color cast are judged by artificial visual methods such as covering with a shading sheet and wearing sunglasses, so as to judge its consistency. The above existing technologies mainly have the following defects:

[0003] 1. Before the PCBA LED light board is tested for brightness and color consistency, the matching hardware board needs to be connected with test wires. The wiring is cumbersome and messy, which is not conducive to safe operation and takes too long.

[0004] 2. Currently, the brightness and color consistency inspection of LED light boards only relies on manual visual judgment, which can only intercept some basic defects (such as the brightness of a single LED lamp is too high or too low, a single LED lamp bead is color cast, a single LED lamp bead is not lit, etc.), and cannot detect whether the brightness and wavelength of all LED lamp beads are consistent. It is impossible to qualitatively determine the overall brightness and color consistency after the light board is lit. Due to the lack of professional equipment for testing, there is a risk of test failure and loss. Summary of the invention

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a device for testing LED wavelength and brightness to solve the problem of leakage in traditional simple LED lamp panel testing and to improve production efficiency and quality.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An LED wavelength and brightness testing device, comprising a fixture box, a product mainboard, a PC, an ICAT LED tester and a program-controlled power supply;

[0008] The top of the fixture box is provided with a lamp board placement groove, and a plurality of detection through holes are distributed at the bottom of the lamp board placement groove, and the position of each detection through hole corresponds to each lamp bead on the LED lamp board to be detected, and a lighting probe is nested and fixed at the lower end of each detection through hole; during detection, the LED lamp board is placed in the lamp board placement groove, and each lamp bead on the LED lamp board is nested at the upper end of the corresponding detection through hole;

[0009] The ICAT LED tester is used to test the brightness and wavelength of the LED lamp beads. The ICAT LED tester is placed in the cavity inside the fixture box, and each lighting probe is connected to the ICAT LED tester through an optical fiber.

[0010] The product mainboard is used to control the light emission and color switching of the LED light board. The product mainboard is placed on the top of the fixture box. The product mainboard is electrically connected to the LED light board, the PC, and the programmable power supply respectively;

[0011] The PC is also electrically connected to the program-controlled power supply and the ICAT LED tester respectively.

[0012] Furthermore, both sides of the top of the lamp panel placement slot are rotatably connected with limit buckles.

[0013] Furthermore, the PC is connected to the ICAT LED tester and the programmable power supply respectively through an RS232 communication line, the PC supplies power to the ICAT LED tester through a USB line, and the PC controls the programmable power supply through the RS232 communication line, so that the programmable power supply can be turned on and off and set the correct voltage and current to power the mainboard.

[0014] Furthermore, the PC is connected to the product mainboard via a USB cable, and the PC sends instructions to the control mainboard to control the lighting and color switching of the LED light board.

[0015] The utility model adopts the above technical solution, and has the following beneficial effects:

[0016] This utility model uses professional brightness and wavelength testing devices to improve the consistency of LED lamp brightness and chromaticity functions and reduce defective leakage. At the same time, the use of test fixture boxes instead of manual testing can reduce the tediousness of assembly and plugging of wires, thereby reducing working hours and improving production efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described in detail below with reference to the accompanying drawings and specific implementations:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 A top view of the slots for the light panels;

[0020] Figure 3 This is a hardware block diagram of the utility model. DETAILED DESCRIPTION

[0021] like Figure 1-3 As shown, the utility model is an LED wavelength and brightness testing device, comprising a fixture box 1, a product mainboard 2, a PC 3, an ICAT LED tester 4 and a programmable power supply 5.

[0022] The top of the fixture box 1 is provided with a lamp board placement groove 6, and the bottom of the lamp board placement groove 6 is distributed with multiple detection through holes 61. The position of each detection through hole 61 corresponds to each lamp bead on the LED lamp board to be detected (the lamp board placement groove 6 is milled out and the detection through holes 61 are opened in the groove based on the specifications of the LED lamp board size, lamp bead spacing, etc.), and a lighting probe 7 is nested and fixed at the lower end of each detection through hole 61; during detection, the LED lamp board is placed in the lamp board placement groove 6, and the lamp beads on the LED lamp board are respectively nested in the upper end of the corresponding detection through hole 61.

[0023] The ICAT LED tester 4 is used to test the brightness and wavelength of the LED lamp beads of the LED lamp board (multiple probes, expandable, supports up to 16 channels, and can test 16 LED lamp beads at the same time). The ICAT LED tester 4 is placed in the cavity inside the fixture box 1, and each lighting probe 7 is connected to the ICAT LED tester 4 through an optical fiber;

[0024] The product main board 2 is used to control the light emission and color switching of the LED light board, and the product main board 2 is placed on the top of the fixture box 1. The product main board 2 is electrically connected to the LED light board, PC 3, and programmable power supply 5 respectively; PC 3 is also electrically connected to the programmable power supply 5 and ICAT LED tester 4 respectively. Specific electrical connection method: PC 3 is connected to ICAT LED tester 4 and programmable power supply 5 respectively through RS232 communication line, PC 3 supplies power to ICAT LED tester 4 (5V) through USB line, PC 3 controls programmable power supply 5 through RS232 communication line, so that programmable power supply 5 can be turned on and off and set the correct voltage and current to power the main board (4.1V / 5A). PC 3 is connected to the product main board 2 through USB line, and PC 3 sends instructions to the control main board to control the light emission and color switching of the LED light board.

[0025] The top two sides of the lamp board placement slot 6 are rotatably connected with the limit buckles 62. After the LED lamp board to be tested is placed in the lamp board placement slot 6, the free ends of the limit buckles 62 on both sides are manually rotated to abut against the top of the LED lamp board, thereby effectively and stably limiting the LED lamp board.

[0026] The working principle of the utility model is as follows: the object to be tested is placed in the lamp board placement slot 6, the test device is started, and the PC 3 sends instructions to the product main board 2 to control the LED lamp board to emit light according to predetermined requirements. The lighting probe 7 and the optical fiber collect the brightness and wavelength data of the LED lamp beads and transmit them to the ICAT LED tester. The ICAT LED tester 4 compares the collected data (brightness, wavelength) with the set threshold value to determine whether the LED light parameters meet the spec requirements, and then feeds back the test results to the PC 3.

[0027] The above describes the specific implementation of the present invention, but those skilled in the art should understand that this is only an example. Those skilled in the art can make various changes or modifications to this implementation without departing from the principle and essence of the present invention, but these changes and modifications are all within the scope of protection of the present invention.

Claims

1. A device for testing LED wavelength and brightness, characterized in that: Including fixture box, product motherboard, PC, ICAT LED tester and programmable power supply; The top of the fixture box is provided with a lamp board placement groove, and a plurality of detection through holes are distributed at the bottom of the lamp board placement groove, and the position of each detection through hole corresponds to each lamp bead on the LED lamp board to be detected, and a lighting probe is nested and fixed at the lower end of each detection through hole; during detection, the LED lamp board is placed in the lamp board placement groove, and each lamp bead on the LED lamp board is nested at the upper end of the corresponding detection through hole; The ICAT LED tester is used to test the brightness and wavelength of the LED lamp beads. The ICAT LED tester is placed in the cavity inside the fixture box, and each lighting probe is connected to the ICAT LED tester through an optical fiber. The product mainboard is used to control the light emission and color switching of the LED light board. The product mainboard is placed on the top of the fixture box. The product mainboard is electrically connected to the LED light board, the PC, and the programmable power supply respectively; The PC is also electrically connected to the program-controlled power supply and the ICAT LED tester respectively.

2. The LED wavelength and brightness testing device according to claim 1, characterized in that: The top two sides of the lamp panel placement slot are rotatably connected with limiting buckles.

3. The LED wavelength and brightness testing device according to claim 1, characterized in that: The PC is connected to the ICAT LED tester and the programmable power supply respectively through the RS232 communication line. The PC supplies power to the ICAT LED tester through the USB line. The PC controls the programmable power supply through the RS232 communication line, so that the programmable power supply can be turned on and off and set the correct voltage and current to power the mainboard.

4. The LED wavelength and brightness testing device according to claim 1, characterized in that: The PC is connected to the product mainboard via a USB cable, and the PC sends instructions to the control mainboard to control the lighting and color switching of the LED light board.

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