Posts Tagged LED

Stellaray Technology Just Released A New Edge-lit Round LED Panel

Posted by on Thursday, 5 August, 2010


– Stellaray Technology Limited, a professional manufacturer specialized in manufacturing and marketing of LED lightings, just released a new LED Round Panels, it is Glare-free and super bright by edge-lighting, with high quality light-guide plate, which combines their edge-lit LED light guide technology, with LED downlights function.

It utilizes advanced light extraction technologies to extract light precisely where needed, providing bright, uniform light in a thinner form factor without hot spots or dark areas. The LEDs are placed along the edge of the plate, assembly against the light guide to create an assembly measuring of DIA 7”, with a thickness of only 13mm. Details please read below specifications:

7 inch Round LED panel light
Glare-free and super bright by edge-lighting, with high quality light-guide plate.
80% Energy saving, more environment protection.
High power efficiency which is above 90 Lm/w.
Special circuit layout and good heat dissipation ensure light’s long lifespan.
Quickly start (0.01second) and the light is natural and soft, appearance is exquisite.
Ultra-Thin, thickness is 13mm.
No stroboscopic, no pollution, long lifespan, low luminous decay.
No cost of maintenance and easy installation.
Material: superior aluminum alloy and high quality lumisheet acrylic plate (PMMA).
Operating Voltage: low voltage DC24V
Input Voltage: AC85V~AC265V available
Power: < 10W
Lumen output: 800~1000 lm
Light source: low power SMD LEDs (placed in the edge of the plate)
Uniformity of light color: = 85%
Color Rendering Index (Ra): > 80
Lifespan: = 50000h (8 years using validity)
Beam angle: 120 degree
Color: White (various colors available)
Color temperature: 2700K-7500K(Optional, according to your requirement)
Dimension: DIA 180 * 13mm
Application: Replacement for conventional downlight lamp in Hotels, Conference / Meeting rooms, Offices, Commercial Complexes, Residential / Institution Buildings, Schools, Colleges, Universities, Hospitals, etc.

Any question, please feel free to contact James Wu at:

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San Francisco Seeks To Replace HPS Luminaires With LED Luminaires

Posted by on Saturday, 31 July, 2010


– The City and County Of San Francisco has issued a Request for Proposals for “LED Luminaires with Wireless Monitoring and Control System.” The bid due date is October 22, 2010.

The City owns and maintains approximately 18,500 cobra-head type high-pressure sodium (HPS) street-light luminaires, located throughout the City’s forty-nine square miles. The existing HPS luminaires will be replaced with dimmable LED street light luminaires and an integrated wireless communication monitoring and control system.

The City is seeking formal proposals to provide the City with a complete solution which will meet or exceed the minimum specifications and requirements, as stated in the Request for Proposal (RFP) documents.

For example, the technical specifications state that the LED luminaires need to be rated for a minimum operational life of 70,000 hours at an average operating time of 11 hours per night, equating to more than 17 years of service, over which time the illuminance must not decrease by more than 30 percent. The driver needs to have a rated “useful” lifetime of no less than 100,000 hours. The LED luminaire housing and finish should have a warranty of 10 years.

The luminaires must contain completely pre-wired integral drivers and an optical assembly that provide distribution type II and type III, they must have a correlated color temperature (CCT) of 4100K or less, as well as a full cut-off distribution per IESNA classification.

The LED luminaires are required to have 0-10V dimming capabilities and a power factor of 90% or greater at full load. The efficacy requirements are a minimum of 57 lm/W or better. The designed maximum junction temperature shall not exceed 105 ?C.

The City’s purpose in instigating this project is to reduce energy costs by using more energy-efficient LED luminaires, to reduce labor costs incurred in maintaining and operating the City’s streetlights, and to more efficiently and effectively maintain streetlights for end users, the citizens and visitors of San Francisco through the wireless monitoring and control system.

The City anticipates that the contract resulting from this RFP shall have an initial term of 2 years, from December 1, 2010 through November 30, 2012, although it could be extended by up to 3 years.

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