LED's offer a tremendous opportunity to conserve energy and provide precise placement of illumination. To take advantage of these qualities, it is essential to utilize the full output of each LED, given their relatively low illumination level when measured individually - - all without compromising life expectancy or efficacy. The output of an array of LED’s must then be redirected efficiently to reproduce standard IES distribution types at illumination levels comparable to those produced by HID lamps.
Capture - 100% of the LED light is captured by 2 focusing elements surrounding the raw LED.
Collimate - All of the diverging rays from the LED are
re-aimed and made parallel. This is necessary for the vectoring prism below to function effectively.
re-aimed and made parallel. This is necessary for the vectoring prism below to function effectively.
Vector - The parallel rays are vectored to create a beam in the lighting pattern, and the array of vectored beams are aimed (combined) to create standard IES light distributions (Type II, III, IV, or V-SQ).
VLED Reflector-Prism for distribution pattern perimeter (high throw). Note alignment pin for precise aiming.
The VLED system of three Reflector-Prisms with independent vertical control.
Raw LED Light Distribution
Creating good visibility demands meeting minimum illumination requirements and maintaining excellent max-to-min balance (uniformity) while eliminating light pollution, light trespass, and glare.
Each group of VLED Reflector-Prisms is aimed to cover one of three zones in the distribution pattern; one group from 0° - 50°; one group from 50° - 65°; one group from 65° - 72°. Unique combinations are used to create the individual IES distribution types.
VLEDReflector-Prisms allow separate control of illumination directly
below the luminaire versus
the pattern perimeter.
below the luminaire versus
the pattern perimeter.
What separates VLED optics from HID and other LED systems are the concise shapes of the distribution patterns, the minimized waste light below and behind the luminaire, and excellent uniformity. In light of the new IES Luminaire Classification System (LCS), the VLED modules are tuned to minimize glare at high angles while maximizing high angle kick for superior spacing to mounting ratios. The modules produce zero up light and have minimal backlight without the use of shielding.
VLED Reflector-Prisms may be oriented to produce unique patterns to meet your specific project criteria.
Consult Factory.
Type II - Ideal for narrow areas, roadways, and paths.
Type III - Well-suited for wide roadways, site/area perimeters,
and open areas.
and open areas.
Type IV - Ideal for perimeters
where a deep forward throw is required.
where a deep forward throw is required.
Type V-SQ - Ideally suited for
large open area illumination.
large open area illumination.
Heat is the enemy of all electronics. LED's suffer from adverse levels of heat in two ways: 1) Excessive heat can burn out the component prematurely; 2) A loss of light output will occur as they heat up. The cooler the system operates, the more efficient the LED's become. Controlling the heat will produce higher illumination levels and a greater life expectancy.
Heat sinks - Increase the radiating and convecting surface area of the rear seal plate. Screws fastening the circuit board to the seal plate thread directly into the heat sink.
Rear Seal Plate - Acts as a primary thermal conductor between the LED PCB and heat sinks
Module Housing
Optical Positioning Plate
Reflector-Prisms - 3 different configurations collect, collimate, and re-direct the LED output.
Conduction vias are copper lined "tubes" that increase thermal conductivity to transfer heat from the top of the PCB to the circuit board mounting surface and the heat sink.
Screw holes are copper lined to create a thermal path tot he PCB screws and directly to the heat sinks.
Keeping LED junction temperatures at their coolest adds to the system longevity and makes the LED's run more efficiently. This produces the highest illumination levels possible and maximizes LED performance.
*See LM-80 Charts DR06 Publication From Lumileds http://www.philipslumileds.com
Outdoor luminaires are subject to extreme environments with temperature ranges from -50°F to +120°F, winds in excess of 120 MPH, and daily UV bombardment from sunlight. These elements can ravage the optical system over time. Protecting the optical components is critical for maintaining peak performance and longevity.
Optical modules are available square or round, in 64, 80 or 120 emitters and are completely sealed to meet an IP67 rating.
CAUTION: Specifiers should be aware that many manufacturers do not enclose their LED optics. This can lead to rapid optical deterioration substantially reducing luminaire efficiency.
VLED Optical Modules are completely sealed to meet an IP67 rating thereby withstanding the rigors of the outdoor environment over the lifetime of the LED’s. By mechanically protecting the interior components (LED’s and Refractor-Prisms) and controlling heat, the Light Loss Depreciation is minimized. Effectively,
the expected light loss from the LED’s over their lifetime is the only appreciable factor.
In addition,VLED Optical Modules are free to be rotated within the luminaire to meet site requirements and properly orient the distribution patterns. The luminaire design is free to be relevant to all forms of architecture without compromising aesthetics or system performance.
Optical Module - Sealed LED Optical Module. Low copper A356 alloy (<.2% copper) cast aluminum housing. Integrated clear tempered 3/16” glass lens sealed with a continuous silicone gasket protects emitters (LED's) and emitter Reflector-Prism optics, and seals the module from water intrusion and environmental contaminants. Entire module is IP67 rated.
The emitters (LED's) are mounted to a vented circuit board. These “vias” are copper lined holes which conduct heat from the component side of the circuit board to the mounting side of the circuit board. Mounting screws are located between each emitter to secure the circuit board to the back panel of the optical module for heat transference to the heat sink. The PCB mounting screws thread into an extruded heat sink mounted to the back of the optical module.
Emitters (LED's) are Luxeon Rebels, high output, Neutral White nominal 4100K CCT for the entire module (Cool White nominal 6500K are available). Each emitter is optically controlled by a Reflector-Prism injection molded from H12 acrylic (3 types per module; one from 0° - 50°;
The emitters (LED's) are mounted to a vented circuit board. These “vias” are copper lined holes which conduct heat from the component side of the circuit board to the mounting side of the circuit board. Mounting screws are located between each emitter to secure the circuit board to the back panel of the optical module for heat transference to the heat sink. The PCB mounting screws thread into an extruded heat sink mounted to the back of the optical module.
Emitters (LED's) are Luxeon Rebels, high output, Neutral White nominal 4100K CCT for the entire module (Cool White nominal 6500K are available). Each emitter is optically controlled by a Reflector-Prism injection molded from H12 acrylic (3 types per module; one from 0° - 50°;
one from 50° - 65°; one from 65° - 72°). Each Reflector-Prism has indexing pins for aiming and is secured to an optical plate made of matte black anodized aluminum. The optical plate locates every Reflector-Prism over an emitter. Reflector-Prisms are secured to the optical plate with a UV curing adhesive. The Reflector-Prisms are arrayed to produce IES Type II, IES Type III, IES Type IV, and IES Type V-SQ distributions. The entire VLED Optical Module is field rotatable in 90° increments. Both module and drivers are factory wired using water resistant, insulated cord. Lens, module and drivers are field replaceable.
Photometric test data in accordance with IESNA LM-79-08 test protocol is available.
LED life rating data shall be determined in accordance with IESNA LM-80-08.
Driver - LED driver module operates on input voltages from 120 - 277V, 50/60Hz. Driver is independently sealed and UL listed for wet location.
Photometric test data in accordance with IESNA LM-79-08 test protocol is available.
LED life rating data shall be determined in accordance with IESNA LM-80-08.
Driver - LED driver module operates on input voltages from 120 - 277V, 50/60Hz. Driver is independently sealed and UL listed for wet location.
Consult factory for additional electrical configurations.