What is ultraviolet and infrared?
The wavelength of visible light is more than 400nm for 3030 lamp beads, which is mainly used in backlight, lighting, vehicle, display and projection markets. The wavelength of red line is more than 760nm, mainly because its energy is relatively weak and its wavelength is relatively long, which is used in imaging and sensing markets. Ultraviolet light is below 400nm, 3030 lamp bead has strong energy and short wavelength, which is used for exposure sterilization.
UV is divided into UV-A, UV-B and UV-C. UVA's main applications include money detector, commercial lighting, which can make clothes look whiter, and air freshener, mainly based on the principle of photocatalyst. There are quite a number of manufacturers launching such products, such as Seoul semiconductor. In the development of higher power products, including UV curing, metal coating, wood coating, lithography, exposure machine, etc., UV-A of more than 1 watt in different wave bands is needed, and the above is the market of UV-A. UV-B is used in phototherapy, Planck photoelectric plant lighting lamp beads also help plant growth, as well as food preservation. UV-C is widely used in sterilization and purification. It is widely used in surface sterilization, air, food and water in our daily life.
You will see for a long time if UV-C led goes to a higher light efficiency, it will enter into some daily life. We are here to observe that the next market will be static water sterilization, dynamic water sterilization, and some medical lighting, or light curing market, water treatment.
Secondly, the second topic is the infrared market trend. Infrared is mainly used in the imaging and sensing market because of its long wave length and weak energy.
Infrared sensing light source is divided into infrared LED and infrared laser. Ledenside analyzed that the market scale of infrared LED and infrared laser in 2017 was US $590 million, and the market scale of infrared LED and infrared laser in 2020 was US $2143 million. But if the iPhone's world facing TOF has the chance to be introduced in 2019, the market size is expected to reach US $2341 million.
The market trend of infrared sensing applications in 2019, including security monitoring, mobile phone biometric, distance sensor, vehicle sensing, as well as the market of heartbeat, blood oxygen and blood sugar. There are also markets for optical communication and optical access.