LED detection method and detection system

A technology of light-emitting diodes and detection methods, which can be applied in the testing of optical instruments, measuring devices, and testing of machinery/structural components, etc., can solve the problems of increasing production costs, time-consuming and labor-intensive, etc.

Inactive Publication Date: 2014-12-24
ZHANJING TECH SHENZHEN +1
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Problems solved by technology

The above process is undoubtedly time-consuming

Method used

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  • LED detection method and detection system
  • LED detection method and detection system

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Embodiment Construction

[0027] See figure 1 , The LED detection system provided by the embodiment of the present invention includes a detection device 110 , a calculation device 120 , a comparison device 130 , a storage device 140 and a comparison device 150 .

[0028] The detection device 110 is used to detect the spectrum data of the light emitted by the LED crystal grain and the spectrum data of the light emitted by the fluorescent powder after being excited to emit light. The spectral data of the light emitted by the light-emitting diode die is as follows: figure 2 Shown; The spectral data of the light emitted by the phosphor powder after being excited is as follows image 3 shown. exist Figure 2-3 In , the abscissa represents the wavelength of the light in nm; the ordinate represents the light intensity value of the corresponding light in W.

[0029] The calculation device 120 calculates the synthetic spectrum of the LED crystal grain and the phosphor powder according to the ratio of the l...

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Abstract

An LED detection method comprises the steps that frequency spectrum data of light emitted by grains of an LED are detected; frequency spectrum data of light emitted by simulated fluorescent powder are detected; according to the ratio of the light emitted by the grains of the LED and the light emitted by the fluorescent powder, a synthetic spectrum of the grains of the LED and the fluorescent powder is calculated; the calculated synthetic spectrum is compared with standard or expected frequency spectrum data, so that whether the calculated synthetic spectrum is within the range of the standard or expected frequency spectrum data is determined; if the calculated synthetic spectrum is not within the range of the standard or expected frequency spectrum data, the ratio of the light emitted by the LED and the light emitted by the fluorescent powder is adjusted until the calculated synthetic spectrum is within the range of the standard or expected frequency spectrum data. The invention further provides an LED detection system.

Description

technical field [0001] The invention relates to a detection method and a detection system of a light-emitting diode. Background technique [0002] A light emitting diode (Light Emitting Diode, LED) is a semiconductor element that can convert electric current into light in a specific wavelength range. Light-emitting diodes can be widely used as light sources in the field of lighting because of their advantages such as high brightness, low operating voltage, low power consumption, easy matching with integrated circuits, simple driving, and long life. [0003] When making an LED light source, LED crystal grains and phosphor powder are generally mixed and packaged together to form a packaging component for emitting white light. Then measure the optical data such as the spectrum and CIE coordinates of the packaged components to determine whether the packaged components meet the requirements of the product. If the requirements are not met, the ratio of the phosphor powder must b...

Claims

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Application Information

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IPC IPC(8): G01M11/00
Inventor 黄哲瑄
Owner ZHANJING TECH SHENZHEN
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