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Current Issue : Q4,2015

Taiwan Photonics News :  
  Expert: Hydroponics Can Co-exist with Traditional Farming Method

CMOS Detecting Its Presence in Automotive Field

EVERLIGHT introduces five new UV LEDs at LIGHTFAIR 2016

Expert: Hydroponics Can Co-exist with Traditional Farming Method


Organic cultivation is a farming method which has a smaller environmental impact. However, it does not mean that it would produce more nutritious fruits and vegetables. Hydroponics is an alternative for saving water and fertilizer and has a high efficiency of yield. Facilities with environment regulation capabilities which were often used in the past, such as net rooms and green houses, have begun to be incorporate into plant factories in recent years. Plant factories using artificial light can cultivate cubic cultivation, significantly saving the land. These farming methods can coexist with open-air field cultivation and are all a part of agriculture and each has its pros and cons and will not replace any other.

Basically plant roots can only absorb inorganic salts, namely the various elements dissolved in water in the form of positive and negative ions for absorption by plants. This applies to hydroponics, soil tillage and organic farming. The case is still true even for the foliar fertilization. The absorption works the same way when some farmers add milk or Yakult for fertilizing guava. Plant roots will not drink milk or Yakult. Milk contains calcium and organic solids while Yakult has beneficial microbes and sugar. All of the ingredients can only be absorbed by plants in the form of ions dissolved in water.

Alarmist rhetoric must be avoided. There are so-called gourmets on the Internet giving quite a lot of criticism on hydroponics. A TV show even placed pictures of two different varieties of vegetables together for presentation with the former being bigger and the latter smaller to show that hydroponics agricultural products will have the problem of inadequate nutrition. What I really want to question the reporter is that will anyone put together an elephant and a mouse to compare the size, and then say that former has higher nutrition because of its larger size? This report is so absurd, but still caused some consumers to panic and became a hot topic being discussed for a few weeks in the agricultural sector.

CMOS Detecting Its Presence in Automotive Field


Following the smartphone, automotive image sensors will be the next wave of growth in the market. For technology development, Panasonic released a new generation of high-performance image sensing technology for automotive autopilot with sensitivity being increased by 100 times for instantly identifying the signal lights, pedestrians and obstacles at night. It is expected to be commercialized in 2020 as the earliest possible timing. Sony is also stepping up its development of vehicle sensor applications. With the car manufacturers racing to develop automatic driving technologies, the image sensor industry becomes increasingly vigorous. Fig 2. Shows the CMOS sensor market shares of the manufacturers.

Image sensor applications are already everywhere, the market volume is expected to reach 5 billion pieces given the promoting factor of the applications such as NBs, security devices, digital cameras and mobile phones and the market is bound to expand further as the Internet of cars has become a trend, autopilot technology has been developed and all the countries stipulate the reverse imaging device to be the standard vehicle equipment. However, the image sensor market is still dominated by the U.S. and Japanese manufacturers; the Taiwan manufacturers include chip designers such as Pixart and Himax Technologies and foundry OEM manufacturers. Since the internet of things and internet of cars will need optoelectronic technologies such as image sensing as the solution, this application can be the field for the industry in Taiwan to make its transition to.

  EVERLIGHT introduces five new UV LEDs at LIGHTFAIR 2016

The UV LED market is expected to grow rapidly in 2016, due to upcoming applications apart from the well-known printing technology. Emerging curing applications, like UV paint and cosmetic curing, medical treatments, domestic disinfection and home appliances like photocatalytic air and water purifiers are as appealing as counterfeit checking.

EVERLIGHT's new UV LED portfolio covers wavelengths between 365nm and 400nm. All five products are based on a special UV ceramic substrate to effectively improve the heat resistance. Three high power (1.8W) components, EAUVA35352 (3.5x3.5x2.31mm), EAUVA35353 (3.5x3.5x3.51mm) and EAUVA4545 (4.5x4.5x5.0mm) feature different viewing angles of 120X, 50X and 30X, respectively. Two lower power (0.08W) components complement the high power range. EAUVA3020 (3.0x2x0.65mm) excels with a very uniform light pattern and EAUVA2016 (2.0x1.6x0.75mm) is the smallest choice in EVERLIGHT's UV LED portfolio.


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