On September 24, 2009, it is reported that the Los Angeles City Approved LED way streetlight program is part of the green streetlight plan, and plans to replace the current snakehead lamp with BetaLED® lamps in local and residential areas.
The city plans to renovate the project to replace all of the city's 140,000 high-pressure sodium lamps (HPS) with LED lighting fixtures in the next five years. LEDway streetlights reduce energy and maintenance costs, and the lights are safer, clearer, whiter, and significantly improve color temperature. Compared to conventional light sources, LED street lights do not contain mercury or other harmful substances. LEDway streetlights have passed IESNA certification and are subject to the International Dark Sky Association guidelines. The patented NanoOpticTM technology concentrates light into the target area without spreading to nearby areas or to the night sky. LEDway products use 20-25% (by weight) of post-consumer recycled materials (aluminum casting and extrusion). There are 70% (by weight) LEDway components that are cast and extruded from aluminum and are easy to recycle. Corrugated packaging is 100% recyclable.
It is estimated that the replacement of LED street lights will reduce the city's energy consumption by 40%, and can reduce carbon dioxide emissions by 40,500 tons per year, or equivalent to reducing 6,700 cars on urban roads. The city will save approximately $10 million annually in terms of reduced energy consumption and carbon dioxide costs.
The optical module (optical module) is composed of optoelectronic devices, functional circuits and optical interfaces. The optoelectronic device includes two parts: transmitting and receiving.
Simply put, the function of the optical module is to convert the electrical signal into an optical signal at the transmitting end, and after transmitting through the optical fiber, the receiving end converts the optical signal into an electrical signal.
The optical module is an optoelectronic device that performs photoelectric and electro-optical conversion. The transmitting end of the optical module converts electrical signals into optical signals, and the receiving end converts optical signals into electrical signals. Optical modules are classified according to the packaging form. Common ones include SFP, SFP+, SFF, Gigabit Ethernet Interface Converter (GBIC), etc.
The transmitting part is: the electrical signal with a certain code rate is processed by the internal drive chip and then drives the semiconductor laser (LD) or light-emitting diode (LED) to emit the modulated light signal of the corresponding rate. The internal optical power automatic control circuit makes The output optical signal power remains stable.
The receiving part is: the optical signal of a certain code rate is input into the module and then converted into an electric signal by the light detection diode, and the electric signal of the corresponding code rate is output after the preamplifier.
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