Product category:
Light Emitting Diodes (LEDs)
News Release from: Cao Group | Subject: Dynasty lamps
Edited by the Electronicstalk Editorial
Team on 01 December 2006
LED lamps are made for outdoor
applications
A new series of LEDs is optimised for applications in traffic signals, message centres and price changers.
A new series of LEDs optimised for applications in traffic signals, message centres and price changers has just been announced by Dr Densen Cao, PhD, founder, President and CEO of Cao Group They are characterised by long-term reliability, excellent performance in outdoor applications and at high ambient temperatures, and high colour intensity, which takes into account the human factors of eye colour response
This article was originally published on Electronicstalk on 3 Jul 2006 at 8.00am (UK)
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System provides a low voltage alternative to traditional neon and fluorescent lighting, and allows sign builders to achieve superior quality at lower cost.
The colour bins from which they are manufactured are measured radiometrically by the dominant wave length, in nanometres.
Dr Cao says that extreme precision in colour uniformity is possible, but that broader acceptance of bin variations speeds availability, reduces costs, and will not be discernible to the naked eye.
The new products include 30 degree round red and amber lamps for traffic signals, 70/40 degree single-colour (red and amber) and 70/40 RG bicolour (red and green) displays for outdoor message centres and price changers.
Further reading
LED lamps offer halogen replacement
Cao Group has augmented its 1W LuxemBulb series of LED MR-16 lamps for accent, display and target lighting applications.
High brightness on surface mount LEDs.
Agilent Technologies has introduced a series of surface-mount LEDs designed and qualified specifically for automobile interior and exterior lighting applications.
Cao Group also offers not only the LED component but the LED PCB assemblies as well.
The packaging is environmentally sealed and fully RoHS compliant.
Customised display panels can also be provided.
30 degree amber and red round lamps are currently in production, with the amber lamps offering typical colour intensity in the range of 6100mcd, and the red lamps typically at 4700mcd.
New units offering better performance at high ambient temperatures and a higher average colour intensity will be coming soon.
70/40 red and amber oval lamps for mono-colour displays range from 980 to 1700mcd, 1300mcd typical, are currently available, and units for high temperature applications will be available soon.
RG bicolour displays are offered in red and green, with the red lamps sharing specifications with the mono-colour version, and the green lamps providing colour intensities of 1700-2800mcd, 2200mcd typical.
The green lamps for high temperature applications will range from 2200 to 2800mcd, with 2400mcd typical.
Assemblies are manufactured to individual specifications.
Considerations include pixel structure and colour (mono, bi or RGB); pitch size; brightness requirements; supporting structures and spacers, and driving conditions, including power, voltage and current sources and the brightness modulation scheme.
The Luxem technology which underlies these new Dynasty lamps is a fusion of multiple Cao Group patents, covering methods for LED packaging, heat management, heatsink arrangement, wide wavelength spectra generation, light beam shape management, and light intensity management by LEDs.
The various patents form the basis for CAO Group's wide variety of optoelectronic, solid state lighting and signage, medical, dental and forensic products, manufactured in the company's four facilities in West Jordan, Utah and Beijing, China.
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