GE Consumer & Industrial
Lighting
ConstantColor™ CMH™
Ceramic Metal Halide Lamps
Single Ended G8.5
Product Information
Lamp technology
ConstantColor CMH™ lamps combine HPS technology
(providing stability, efficiency & uniformity) and Metal Halide
Technology (providing bright white quality light) to produce
highly efficient light sources with good colour rendering and
consistent colour performance through life. This is achieved
by using the ceramic arc tube material from the Lucalox™
lamp, which minimises the chemical changes inside the
lamp through life. When combined with the halide doses
used in Arcstream™ Metal Halide lamps then the quality
and stability of the dose maintains the colour consistency.
Hence the name ConstantColor CMH™.
Metal halide lamps, traditionally made with quartz arc tubes,
are prone to colour shift through life and lamp-to-lamp
colour variation. Some of the dose, e.g. sodium, (an
important component of metal halide lamps), can migrate
through quartz to cause colour shift and loss of light through
life. The ceramic arc tube resists this material loss, can be
manufactured to tighter tolerances and withstands a higher
temperature to provide a more constant colour.
Features
• Consistent colour over life
• Good colour uniformity lamp to lamp
• Bright light – in a very compact size
• Excellent colour rendition
• Improved reliability due to 3 part design
• Up to 97 Lumen per Watt (LPW) efficacy
• Up to 15,000 Hr life
• UV control
• Colour temperatures 3000K, 4200K
Single ended format
Single ended Ceramic Metal Halide lamps are designed to
provide symmetrical beam distribution using the axial con-
figuration of the discharge arc.
A variety of beam angles are possible and adjustable beam
control can be built into the luminaire.
This compact lamp shape enables luminaire size to be
minimised and the bi-pin lamp base enables easy changing
with front access.
Applications areas
• Retail
• Offices
• Stage/Studio
• Architectural lighting
• Display Cabinet
• Hotels
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Safety warnings
The use of these products requires awareness of the following safety issues:
Warning
• Risk of electric shock - isolate from power supply before changing lamp
• Strong magnetic fields may impair lamp performance
and worst case can lead to lamps shattering
Use in enclosed fixtures to avoid the following:
• Risk of fire.
• A damaged lamp emits UV radiation which may cause eye/skin injury
• Unexpected lamp shattering may cause injury, fire, or property damage
Caution
• Risk of burn when handling hot lamp
• Lamp may shatter and cause injury if broken
• Arc tube fill gas contain Kr-85
Always follow the supplied lamp operation and handling instructions.
www.ge.com/eu/lighting
and General Electric are both registered trademarks
of the General Electric Company
GE Lighting is constantly developing and improving its products. For this reason, all product descriptions in this brochure are intended as a
general guide, and we may change specifications time to time in the interest of product development, without prior notification or public an-
nouncement. All descriptions in this publication present only general particulars of the goods to which they refer and shall not form part of any
contract. Data in this guide has been obtained in controlled experimental conditions. However, GE Lighting cannot accept any liability arising
from the reliance on such data to the extent permitted by law. CMH Single Ended G8.5 Product Information for OEMs
17th July,
2007
