With technological innovation and cost reduction, LED downstream applications are accelerating, and lighting has become a large downstream application market for LED. The agency expects that the LED lighting market will reach 29. 6 billion US dollars this year and is expected to reach 33. 1 billion US dollars by 2017, with a market penetration rate of over 52. LED has the advantages of energy saving, environmental protection and long service life. Objective with technological innovation and cost reduction, LED downstream applications are accelerating, and lighting has become a large downstream application market for LED. The agency expects that the LED lighting market will reach 29. 6 billion US dollars this year and is expected to reach 33. 1 billion US dollars by 2017, with a market penetration rate of over 52. LED has the advantages of energy saving, environmental protection and long service life. At present, only 10 of the electric energy consumed by ordinary incandescent lamps during normal operation is converted into light energy, while the utilization rate of LED lamps reaches 90. Compared with incandescent lamps, LED lighting saves nearly 90% of electric energy and 75% of ordinary energy-saving lamps. At present, China's lighting electricity consumption accounts for about 13 of the whole society's electricity consumption. If all LED lighting products are replaced, 350 billion kilowatt-hours of electricity will be saved every year. In recent years, countries have introduced a timetable for disabling incandescent lamps. As early as 2012, the European Union, Japan and Canada had completely banned the use of incandescent lamps. Since 2014, the United States has banned the sale of 40 W, 60 W, 75W and 100W incandescent bulbs. At the same time, China also prohibits the import and sale of incandescent lamps of 60W and above. As the price of LED bulbs falls, the market penetration rate will further increase in the future. Data show that the retail price of LED bulbs replacing 40-watt and 60-watt incandescent lamps fell in October. In addition, LED also has broad application prospects in infrared and ultraviolet regions. Among them, infrared LED is mainly used for security monitoring and sensors, and security monitoring infrared LED can be used in night vision systems in the field of automotive electronics. At present, many manufacturers are actively laying out the infrared and ultraviolet LED fields. Osram can detect road conditions 150 away at night by using infrared LEDs with a specific wavelength of 850nm. The infrared LED headlights developed by Ford can help drivers monitor obstacles such as pedestrians and cyclists when driving at night. In addition, the infrared LED can also be used to monitor the driver's driving situation, such as leaving the driving Road to issue an early warning, etc. The infrared LED monitoring will provide more reliable road condition information for the automatic driving of the car. Judging from the sensor field, Samsung's new generation of flagship mobile phones this year adopt infrared LED sensors to match iris recognition technology, and use infrared LED to emit infrared light sources towards human eyes, even in special environments, iris also has a high recognition rate. Infrared LEDs can also be used in eye tracking systems, which use infrared LEDs to emit infrared light of a specific wavelength, record the amount of light reflected from the eyes, and use this information to identify the direction of the user's viewing. The system will change the existing human-computer interaction mode, can display the relevant information of the user's viewing position, and adjust the scene of the display or projection position. There is huge room for infrared LED development in the future. It is estimated that the market size of infrared LED will exceed 0. 3 billion US dollars this year and is expected to reach by 2020. $1. 1 billion.