Photoelectric measurement method and device for utilizing thermocouple to monitor SSL (Secure Socket Layer) lighting products

Abstract

The invention provides a photoelectric measurement method for utilizing a thermocouple to monitor SSL (Secure Socket Layer) lighting products. The method comprises the following steps: setting initial measurement conditions of an integrating sphere testing system and correcting the system; placing in the SSL lighting product, and testing according to the conventional steps of photoelectric testing, monitoring the temperature of the SSL lighting product by utilizing the thermocouple in the conventional photoelectric testing process of the SSL lighting product, and conducting photoelectric measurement after the thermocouple stably monitors the temperature of the system.. The invention further provides an integrating sphere measurement device for utilizing the thermocouple to monitor the temperature, which comprises an integrating sphere for measuring luminosity and chromaticity, and a thermocouple probe for measuring temperature at a preset position in the integrating sphere is arranged inside the integrating sphere. Temperature monitoring on the preset position in the integrating sphere to the SSL lighting products can be realized by arranging the temperature control system of the thermocouple, analysis on the structure and service life of the SSL lighting product can be effectively conducted by relationship between measurement results of luminosity, chromaticity and the like and the temperature.

Description

technical field [0001] The present invention relates to a test method for semiconductor lighting products (hereinafter referred to as SSL products), using a 4π or 2π integrating sphere test system as a carrier, especially relates to photoelectric measurement suitable for IES-LM-79, and belongs to the technical field of electric light source and lighting measurement. [0002] Background technique [0003] When performing photometric and chromaticity measurements on SSL products, the sample needs to reach a stable state. According to the definition and requirements of IES LM-79, the stabilization time is generally 30 minutes, (small integrated LED lights) to 2 hours or longer (large SSL lighting equipment). In order to achieve a stable thermal state, when the readings of the light output and electric power of the product within 30 minutes (15 minutes interval) do not change by more than 0.5%, it indicates that a stable state has been reached. Experiments have shown that SSL p...

AI Technical Summary

Problems solved by technology

[0007] In view of the defect that the above existing technology cannot know when the SSL product reaches thermal stability, the present invention can obtain the distribution of the spatial distance inside the integrating sphere and the temperature step interval by using a thermocouple to conduct photoelectric measurement and auxiliary monitoring of the SSL lighting product. The functional relationship can also obtain the functional relationship between the time change and the temperature change at different collection points, so that the thermal stability of the SSL product can be accurately monitored, the photometric value and chromaticity value of the SSL product can be measured, and the thermal performance of the SSL product can be analyzed and counted. Relationship to actual life expectancy

Images