Cybernetica AS Department of Navigation Systems

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LED Sector Lantern E8591

The LED Sector Lights E8591 utilize high-efficient LED technology to provide narrow high intensity 3-colour sectored light beam guaranteeing the visibility range of up to 10 nautical miles at night time. The light consists of a light unit and of a marine grade aluminium enclosure. The light unit consists of transparent polycarbonate front cover and of anodized  base board which is used for dissipation of the heat.

On  the site of installation the lantern will be fixed by a hot zinc coated base plate. The direction of the light beam around the horizontal axis is adjustable by rotation of the case with the light unit. Around vertical axis the direction of the light beam is adjustable by deflection of the light unit.



  • designed using Luxeon’s  revolutionary, energy efficient and ultra compact new STAR™  light source, combining the lifetime and reliability advantages of Light Emitting Diodes

  • high intensity (up to 2000 cd) narrow 3-colour sectored light beam, adjustable around vertical and horizontal axes

  • control of flashing using internal or external flasher of any available type

  • different flashing pattern can be implementted for the light beams of different colours

NOTE: STAR™ is a trade mark of Lumileds Lighting, LLC

LED Sector Light E8591

Technical specifications

Parameter Minimum Typical  Maximum
Wavelength of red light* 612 nm 625 nm 645 nm
Wavelenght of green light
490 nm
505 nm
520 nm
Radiation temperature of white light
4500 K
5500 K
8000 K
Light intensity of all sectors 1800 cd 2000 cd  2900 cd
Width of the red sector*
1.5 degrees
Width of the green sector*
1.5 degrees
Width of the white sector*
1.9 degrees
Boundary resolution 2 angular minutes
Vertical divergence, 2  θ½ from +1.25 up to -2.25 degrees
Control of flashing
by internal flasher or by external flasher of any type
Voltage range  from 10 up to 30 V DC
Power consumption in flash 14 W
Ambient air temperature  from -30°C upto +55°C (IEC 60068-2-1, IEC 6068-2)
Relative humidity up to 98% at temperature +30°C (IEC 60068-2-30)
Operation in conditions in salt mist  allowed (IEC 60068-2-52)
Mechanical vibraton  10 – 500 Hz with acceleration up to 2.2 g (IEC 60945-8,7)
Allowed wind speed up to 140 km/h
Ingress protection IP 68 (IEC 60529)
UV radiation tolerance
IEC 60060-2-5
                    *)  The width of a sector depends on application requirements
Layout and dimensions of Sector Light 8591  

Layout and dimensions of the Sector Light E8591

Download the E8591 catalogue page in Adobe pdf format.

If you need more information, including the information on prices and availability of our products, please do not hesitate to contact our marketing group.

CAUTION: LED light units are sources of bright light, do not stare directly into the beam from close distances and observe all the warnings and guidelines in the Instruction Manual. ekta™ E8591 LED Sector Lights are classified as Class 3R LED devices according to the standard IEC 60825-1:1993+A1:1997+A2:2001, with maximum optical output power of 300mW.

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© 2004-2008 Cybernetica. Last updated 2008-07-29