11.1 New Light Environment Technology
233
LEDs such as long life, high lumen maintenance lead to reduction of maintenance
costs and the frequency of replacement of the light source. The device performance
may still suffer from color drift. The color shift is relatively small compared to the
conventional decorative lamp. LED light source is small and thin. New projection
lamp will undoubtedly become the major highlight of projector lamps because there
is no place to put conventional cast light for many buildings. The combination of
SSL and the building’s surface brings creative space for lighting design. It will also
have an impact on the lighting practices of modern and historic buildings.
At present, LED color decorative wall surface has been widely used in architectural design. In the future, SSL is expected to replace almost all traditional lighting
products. In addition, with further LED performance improvement, lighting and
display technologies will gradually merge and form new industrial platforms.
11.1.4 Lighting and Outlook
LED lights are widely used in major events such as the Beijing Summer Olympic
Games and the World University Games. Such examples have fully demonstrated
the SSL technology. Meanwhile, the technical level of LED products in China has
increased and the cost has decreased in recent years. At present, LED products have
occupied a large number of mainstream supply chain and the general lighting market.
The application scope of LED lights in China has entered the mainstream lighting
market such as commercial and household lighting market from professional fields
such as transportation and landscape. Applications in special fields such as vehicle,
ship-based and military will need the support of new technology. LED is a green
light source in the 21st century. With its huge energy saving potential and good
illumination, it opens up a completely new technical field for us. The continuous
innovation of LED technology is creating an energy-saving and high-quality lighting
environment for us, which requires the joint efforts of manufacturers, designers,
government and other participants.
11.2 Visible Light Communication Application System
LED has a fast switching speed and a high frequency response compared with
conventional light source. The nitride-based LEDs can be modulated at high speed
(on the order of megahertz). Therefore, white LED is able to work as communication source, which has both lighting and communication functions. Compared with
wireless communication technologies such as infrared communication and radio
frequency communication, visible light communication (VLC) technology has the
advantages of safety, energy saving, green environmental protection, and high transmission power. It can be widely used in various fields such as smart home, LED
broadcasting system, navigation, intelligent transportation, robot positioning, etc. In
Précédent

- 244/295

Suivant