In this regard, Guangdong Snow Wright (8.45, -0.02, -0.24%) responsible for lighting said that Snow has already started LED lighting product research and development and technology innovation many years ago, and advanced technology with foreign countries and Taiwan Cooperation, efforts to enhance the level of epitaxial chip closure technology.
As one of the two largest manufacturers of LED chips in the world, OSRAM has excellent preconditions in the field of LED lighting. Speaking of the promotion of LED lighting subsidies, relevant person in charge of Osram stated that LED lighting promotion must break the price bottleneck, and financial subsidies will be an effective incentive method.
In fact, as early as the end of 2007, the Ministry of Finance and the National Development and Reform Commission jointly issued the Interim Measures for the Administration of Financial Subsidy Funds for the Promotion of High-efficiency Lighting Products, and it has been proposed that the financial subsidies for efficient lighting products are mainly self-ballasted fluorescent lamps for general lighting applications. Tri-color double-ended straight-tube fluorescent lamps (T8, T5 type) and metal halide lamps, high pressure sodium lamps and other electric light source products, semiconductor (LED) lighting products, and necessary supporting ballasts.
Since LED lighting products are among the areas for promoting efficient lighting products, in the promotion of national financial subsidies for high-efficiency lighting products, whether LED lighting products can be included in the scope of promotion has always been a topic of high concern in the society. However, due to LED lighting products related standards system has not yet formed, and China's LED core technology is still relatively lacking and other reasons, LED lighting products are still lingering in subsidies outside the promotion.
However, the state has promoted the development of the LED lighting industry. In order to effectively guide the healthy and rapid development of China's semiconductor lighting applications, expand the semiconductor lighting market, promote the development of industrial core technologies and improve the ability to innovate, and rapidly increase the overall competitiveness of the semiconductor lighting industry in China. As early as in 2009, the country launched an LED. Lighting application demonstration work, the introduction of "Ten City Ten Thousand Miles" semiconductor lighting application demonstration city plan, initially planned to cover Beijing, Shanghai, Shenzhen, Wuhan and other 21 domestic developed cities. In May this year, the Ministry of Science and Technology announced the list of the 16 new “Ten Cities, Ten Thousand Cities†demonstration cities, including major cities such as Beijing and Guangzhou.
It is understood that the current market share of LED lighting products is relatively low. Most of them are used in street lamps and landscape lighting projects. Although LED lighting products have shown rapid growth in China in the past two years, it is still difficult to be affected by excessive prices. Lighting market mainstream.
ONU equipment is composed of core functional circuits, power supply and management and other common units and communication interfaces. The core functional blocks of ONU include user and service multiplexing functions, transmission multiplexing functions, and ODN interface functions. User and service multiplexing functions include assembling information from each user, allocating information to be transmitted to each user, and connecting a single service interface function; transmission multiplexing function includes analyzing the signal from the ODN and extracting the part belonging to the ONU and reasonable The information to be sent to the ODN is arranged locally; the ODN interface function provides a series of optical physical interface functions, including optical/electrical and electrical/optical conversion.
If each ONU uses more than one optical fiber to connect to the ODN, then there is more than one physical interface. The ONU service function block provides user-side functions, which includes providing user service interfaces and adapting user information to the form of 64kbit/s or n×64kbit/s; this function block can serve one or several users and can be based on The physical interface provides signaling conversion function. ONU general function blocks provide power supply functions and system operation, management and maintenance (OAM) functions. The power supply function includes AC to DC or DC to AC, and the power supply mode is local power supply or remote power supply. Several ONUs can share a power supply. ONUs should also work normally when powered by a backup power supply.
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