LED breakthroughs are expected to change the indoor lighting environment

Li Zhengzhong, head of the Faculty of Science at Central University of Taiwan, said that LEDs have the advantages of high luminous efficiency, long life and low pollution, which can be described as the future development trend. However, due to uneven color distribution, the human body will be uncomfortable, so it is mostly used outdoors. Not suitable for indoor lighting.

Sun Qingcheng, the head of the school's Department of Optoelectronic Science and Engineering, said that indoor lighting should have appropriate brightness, comfortable light field, and space and time color uniformity; but now most of the LED lights have spatial color shift problem, spatial color shift refers to LED The lamp will produce a "yellow halo" in the middle of the blue and yellowish around. In severe cases, it will form a very high color temperature beam at certain angles, which will have adverse effects on the human body.

Sun Qingcheng pointed out that the research team adjusted the LED chip position and phosphor structure, and developed the world's leading LED light color packaging technology, which can reduce the spatial color shift of LEDs, break the current world record of the literature, and also make the light of LED lights change. It is believed to accelerate the time course of LEDs used in indoor lighting. It has applied for patents in the US, China and Taiwan.

LED lamps have high efficiency and long life, but they are easy to affect vision due to color shift and are not suitable for indoor lighting. Sun Qingcheng, director of the Department of Optoelectronics at the Central University of Taiwan, used packaging technology to improve the color shift of LED lights. The international journal "Optical Express" published its research results.

Li Zhengzhong, head of the Faculty of Science at Central University of Taiwan, said that LEDs have the advantages of high luminous efficiency, long life and low pollution, which can be described as the future development trend. However, due to uneven color distribution, the human body will be uncomfortable, so it is mostly used outdoors. Not suitable for indoor lighting.

Sun Qingcheng, the head of the school's Department of Optoelectronic Science and Engineering, said that indoor lighting should have appropriate brightness, comfortable light field, and space and time color uniformity; but now most of the LED lights have spatial color shift problem, spatial color shift refers to LED The lamp will produce a "yellow halo" in the middle of the blue and yellowish around. In severe cases, it will form a very high color temperature beam at certain angles, which will have adverse effects on the human body.

Sun Qingcheng pointed out that the research team adjusted the LED chip position and phosphor structure, and developed the world's leading LED light color packaging technology, which can reduce the spatial color shift of LEDs, break the current world record of the literature, and also make the light of LED lights change. It is believed to accelerate the time course of LEDs used in indoor lighting. It has applied for patents in the US, China and Taiwan.