Why is the actual light color of LED downlights of the same color temperature so different? ||

After installing the newly-purchased LED downlights, many small partners will be 'collapsed' by the color temperature of the light from the lamps. The color temperature of the selected LED downlights meets the project requirements (such as K, low color temperature, warm color), but the actual It looks like a cool tone brought about by high color temperature, which is seriously 'inconsistent with the name'. Looking forward to the effect, I hope to create an environment with low color temperature and warm colors. The actual effect is that the actual effect is 'greenish! In fact, the occurrence of this phenomenon indicates that the 'color tolerance' index of the downlight you selected is unqualified! There will be a serious deviation between the 'actual color temperature of the light output' and the 'theoretical parameter value'. What is sacred 'color tolerance' Color tolerance is a standard parameter used to identify the actual color temperature of the lamp. Compared with visually identifying the level of color temperature, color tolerance is obviously more objective data. As shown in the figure below, to characterize the difference between the actual light color temperature calculated by the photochromic electrical detection system software and the standard light source color temperature. The smaller the value, the higher the accuracy of the color temperature of the lamp, and the more 'correct' and 'realistic' the color of the light is. The unit of the color tolerance parameter is SDCM. The circle shown in the figure can be understood as the step size (Step). Usually the human eye can find the difference of the step. In-depth analysis will analyze the above-mentioned customer’s 'color temperature tragedy' event and type it out. The light spot of the downlight is compared with the light spot of the photoelectric LED downlight (IF-ICS series). As shown in the figure above, the colors (color temperature) of the two spots are quite different. The spot on the left (IF-ICS series) is a relatively standard warm white light, while the light on the right is obviously 'greenish'. , There is an illusion of cool color temperature. The theoretical color temperature of these two downlights is K! The IF-ICS series of photoelectric LED downlights are not in a hurry. Use the system software that characterizes the photo-color and electrical detection to make a 'demon mirror' to know the truth. The light source analysis and evaluation results of the photoelectric IF-ICS series LED downlights show that the color tolerance is within SDCM , Qualified and in line with the 'K' standard of the mark. The color tolerance of the light source with green light spot analysis is outside the SDCM range, and the color temperature deviation is too large, which proves that the error from the nominal 'K' is serious. Seeing this, I believe you already know the interference of color tolerance on the actual color temperature of LED downlights and other lamps. Therefore, it is strongly recommended that you understand the color tolerance parameters of the lamp before purchasing LED downlights, learn to identify those lamps that 'do not match the name' in terms of color temperature, and avoid 'adding blockage' to the project! Introduction Optoelectronics focuses on lighting design, production and construction, providing overall solutions for LED lighting projects such as airports, hotels, commerce, and offices, and is the designated lighting supplier for major domestic airports. ---Fax contact address: Lighting selection website on the floor of Changhong Science and Technology Building, Science and Technology Park, Nanshan District, Shenzhen