What are ultraviolet and infrared rays? The wavelength of visible light is more than 400 nm. It is mainly used in the market of backlight, lighting, automotive and display screen, projection. The wavelength of infrared light is more than 760 nm, mainly because of its weak energy and long wavelength. It is used in the market of angiography and sensing. Ultraviolet radiation is below 400 nm. It has strong energy and short wavelength. It is used in exposure sterilization.
Ultraviolet radiation is divided into UV-A, UV-B, and UV-C. The main application of UVA is banknote checker and commercial lighting. It can make clothes look whiter. There is also air freshener, mainly the principle of the photocatalyst. There are quite a number of manufacturers launching such products, such as Seoul Semiconductor. Further development of higher power products, including light curing, metal coating, wood coating, lithographic printing, exposure machines and so on, all require UV-A in different bands of more than one watt, which is the market for UV-A. UV-B is used in phototherapy, plant growth, and 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.
The following part is the analysis of LED inside. In 2017 and 2022, the market size of UV LED was only 233 million US dollars in 2017, and in 2022, we think it can reach 1.224 billion US dollars. The annual compound growth rate of the UV LED market is 33%. Among them, the growth of UV-A LED is about 10%, UV-B LED is about 11%, and UV-C LED is relatively high, which will reach about 74%. In terms of market share, the market share of UV-C LED in 2017 is only 14%, and it will reach 73% by 2022.
Why does UV-C have such great market potential? UV-C is mainly used in the market of surface sterilization. Usually, UV-C can be used in some sterilization purposes of high care, such as baby products, mobile phones, toothbrushes, bathroom equipment, kitchen and bathroom lamps, or in dust cleaners for mite removal. We can see that UV LED has also begun to combine general lighting, such as in the cabinet and so on, so lighting manufacturers have gradually noticed this part.
We will see for a long time if the UV-C LED goes to higher light efficiency, it will not enter some of the daily life. We are here to observe the next market will be static water sterilization, dynamic water sterilization, and some medical lighting, or light curing market, water treatment.
Then we mention that the current power of UV-C LED can be divided into three categories: 5-10 mW, 5-10 mW, and 10-30 mW. At present, the main products on the market are 3-5mW products, which still account for a considerable proportion of market sales from 2017 to 2018. However, with the improvement of technology and production capacity, in 2019, we also believe that the next major sales points will be 5-10mW and 10-30mW products.
We listed the performance of various manufacturers in revenue survey or output value survey. In 2016, the main force is the market development of UV-A. The top three are Nichia, Nitride Semiconductors and Seoul Viosys. In 2017, Korean manufacturers performed better in UV-A and UV-C, with the top three being Seoul Viosys, LG Innotek and Nitride Semiconductors.
At the same time, LED inside focuses on the development of major manufacturers of UV-C. At present, LG Innotek claims that their products can reach 100 mW and will soon be launched with 150 mW. We also expect more and more manufacturers to develop high-power products to create more opportunities for the market. The second is that Seoul Viosys is also very active, they continue to roll out packaging and finished products. Other products that have been actively developed by recent LED manufacturers, including Crystal Electric, Lunda and Sanan, all launched 275 to 285 nm UV-C LED products in 2018. Yanjing has also launched 265 nm UV-C products, and Nichia is about to launch 280 nm UV-C LED products. In Europe and the United States, there are also some manufacturers in the development, they are also continuing to pay attention to. We see more and more manufacturers enter this market. This market will develop toward polarization. Some manufacturers enter the consumer market, and some will enter the high-end commercial and industrial market.
When UV-C enters the consumer market, it will face the risk of the price drop. At the same time, it will be tested by market acceptance. If UV-C products need continuous development, its market potential will be controlled by three key factors. The first is whether consumers can identify with the characteristics of this product combined with ultraviolet sterilization. The second is whether consumers can identify with the characteristics of ultraviolet sterilization. Is it necessary to use ultraviolet sterilization to bring quick and convenient efficacy, and the third is whether the current product performance-price ratio will be acceptable to the market?
Secondly, the second theme is the trend of the infrared market. Infrared ray is mainly used in imaging and sensing market because of its long wavelength and weak energy.
Infrared sensing light source is divided into infrared LED and infrared laser. LED inside analysis in 2017 infrared LED and infrared laser market size of $590 million, 2020 infrared LED and infrared laser market size of $2.143 billion. But if the World Facing ToF has the chance to be introduced in 2019, the market is expected to reach $2.341 billion.
The market trends of infrared sensing applications in 2019 include security monitoring, mobile phone biometrics, distance sensors, automotive sensing, and the market of heartbeat, blood oxygen, and blood sugar. There is also the market for optical communications and optical datum.
Following we will focus on mobile 3D sensing. In addition to mobile 3D sensing, in daily life, 3D sensing applications are very broad, including car light, face recognition, game AR or home care, etc.
In 3D sensing, it is mainly divided into structured light and TOF, or active binocular vision. Structured light is based on pattern imaging, so its depth accuracy will be quite high, but the cost of structured light is relatively high, and the calculation is relatively complex. Flight-time ranging is not as accurate and deep as structured light, but it has faster response speed and better identification range. Flight-time ranging is divided into front-lens flying-time ranging and rear-lens flying-time ranging. Among these two products, the cost of front-lens flying-time ranging is relatively high and the operation complexity of rear-lens is relatively low, but it requires relatively high power of VCSEL.
At present, mobile phone manufacturers for face recognition and 3D sensing development. Millet has launched millet 8 exploratory version with structured light sensing, mainly to unlock. Oppo Find X and Mate20 Pro are mainly structured light, mainly for unlocking purposes. This year, Apple launched three full-range mobile phones with 3D sensing products, using structured light, mainly the unlocking function. In 2019, we will see four brands expected to launch 3D-sensing products, including Apple, Samsung, Huawei, and Sony.
Summarize the key factors of the development of 3D sensing. Once 3D sensing is introduced into it, its module price will certainly increase the price of the whole mobile phone. So we can also see that after Apple has increased the unit price of the mobile phone, it is also facing the crisis of market acceptance, so the follow-up also depends on the sales status of Apple's 3D sensing products. Condition.
Another is the relative complexity of the algorithm, whether it can pull the perfection of other supply chains. Besides the functions of unlocking and mobile payment brought by 3D sensing to consumers, can it provide more powerful shopping opportunities besides these two functions, such as fun, interesting or more use opportunities, so that consumers are more willing to use 3D sensing products, which is also a considerable challenge for future development of 3D sensing. Questions.
At the same time, we can also see the fingerprint under the screen (optical and ultrasonic) and face recognition in 2D. 2D face recognition was introduced in the second half of this year. It has the advantages of high recognition, mobile payment function, closest to 3D sensing function, and relatively low production cost. So we expect 2D face recognition and fingerprints under the screen will grab a share of the market in the middle of the mobile phone.
As VCSEL/EEL used to be dominated by the demand of optical communication market, the main suppliers are European and American manufacturers. With the rise of 3D sensing issues, infrared LED manufacturers and VCSEL/EEL manufacturers are also actively developing towards high-power VCSEL/EEL, which will drive the VCSEL/EEL market in the long run. Rise.
For more information, please refer to "Ultraviolet LED Application Market Report 2018 - Curing, Medical, Sterilization" and "New Trends in Infrared Sensing Application Market 2019 - Mobile Sensing, Light Datum, Optical Sensing".
so-char-indent-count:1.5'>Following we will focus on mobile 3D sensing. In addition to mobile 3D sensing, in daily life, 3D sensing applications are very broad, including car light, face recognition, game AR or home care, etc.