|It was very soon after the introduction of the first commercial 1W LED that the TIR optic became the optic of choice for area illumination. Parabolic mirrors have also been used but mostly with the larger source size LEDs and the number used are small in comparison with TIR optics. The reason for the success of the TIR optic has been its good efficiency, robust design and relative cheapness. However for wide area illumination in particular, the circular nature of their output is far from ideal because rooms, roads and car parks are seldom circular.||In addition TIR optics, unlike reflectors are limited to Full Width Beam divergences of 60° which isn’t enough to completely illuminate wide areas from a single luminaire.
Free-Form optics are a relatively recent development which offer a step change in the way wide areas are illuminated by LEDs. There is no universally accepted definition of what a Free-Form optic is but the most common definition is; “an optical component which has one or more optical surfaces that cannot be formed by rotating a 2D curve about an axis.” Typical Free-Form surface can be seen on the optics below:
|Polymer Optics has developed Free-Form surface design and mould tool manufacturing techniques that allow the creation of optical surfaces which can direct light from an LED source into non-circular or elliptical beams with a controlled distribution of light within those areas. This technology allows luminaire manufacturers to significantly increase the efficiency and quality with which their products can illuminate wide areas compared with products based on TIR optics or reflectors.
Free-Form optics are most commonly found in street lighting, but since the first designs completed by POL in March 2010, they have been used in a wide range of applications, such as beacons and emergency lighting
|The picture below shows a false colour intensity image of the rectangular beam generated by the POL 290 Free-Form Optic which is typically used for emergency corridor illumination:Polymer Optics offers a custom design and manufacturing service to customers for any application that may benefit from the light control and efficiency that Free-Form optics give. To find out if this exciting new technology can help you please contact us for details.|
|Polymer Optics offers a custom design and manufacturing service to customers for any application that may benefit from the light control and efficiency that Free-Form optics give. To find out if this exciting new technology can help you please contact us for details.|
POL Standard Ceiling and Wall Mounted EN54-23 Fire Beacon Applications
Street Lighting Applications
The latest computer optical design and ray trace programs with optomechanical innovation are used to take full advantage of plastics materials. Complex optical surfaces combined with integral low cost assembly features.
SLA (Stereolithography), SLS (Selective Laser Sintering), Clear SLA, SLA to Vacuum Casting, Direct Machining and Tooling options.
Proven optical quality toolmakers are chosen and assisted by mould flow analysis to optimize the tool. Our specialist toolmakers are skilled in optical surface generation and polishing.
Our moulders are trained in the art of optical moulding. Mould flow process analysis and thorough F.M.E.A. is controlled by the Project Manager to ensure quality and quantity.
Our integrated approach to design enables optical components to become part of the total solution, including how they interface with the other non-optical components.
Plastics optical components can be coated in poly-siloxane and acrylate based resin blends to impart more robust properties.
Polymer Optics Limited
The Hall, Priory Hill, Rugby Road, Wolston, Coventry CV8 3FZ
+44 (0)2476 937394
Polymer Optics “Modular LED Optics”® design, based on a patented hexagonal format, allows maximum packing density and assembly flexibility for a wide range of applications.
We have also developed specialist optics for the latest range of high power UV LEDs emerging onto the market. These are made from high quality optical silicone to give excellent UV transmission with no long term degradation. See POL’s Silicone Optics page for further details.
We design and supply a comprehensive range of high quality, standard products for use with most world-leading LED devices
Hybrid Reflector design uses a central lens to collect and collimate the on-axis light from the LED.
Our expertise in efficient light control in Lightguide assemblies, enables a lower number of LEDs to achieve the maximum performance.
Free-Form optics are a relatively recent development which offer a step change in the way wide areas are illuminated by LEDs.
Our "engineering with light" approach allows us to provide product solutions for all applications across the whole spectrum from Visible to Infrared.
Developed tooling techniques enable us to produce precision optical surfaces with optical apertures of less than 1mm in diameter, required for miniature camera lens applications.
Our design approach, using light scattering pattern techniques, have enabled us to provide high efficiency display illuminations with very compact space envelopes, which use the minimum of light sources and electrical power consumption.
Our experience in designing and developing ophthalmic products, enables us to provide precision, impact resistant, eye protection optics for applications such as: fire protection, motor cycle visors, industrial PPE and military systems.
Polymer Optics have designed and manufactured a range of optics for street lighting, to meet both the ME and S class regimes of EN13201-2 in Europe and the requirements of IESNA RP-8-00 in the USA.
Emergency Lighting and Visual Alarm Devices are applications where light from an LED has to be efficiently distributed over a wide area. POL’s free form optics technology is particularly suited for applications which require wide area illumination.
POL can now provide advanced optical product design and rapid manufacture in the latest silicone resins to gain design and cost advantages in our customers’ applications.
Our patented prismatic colour mixing optic was introduced to enable good colour mixing, for narrow beam angle systems, using three discrete LED sources.
Brand named “GloWorm®”, the novel lightguide technology enables the light projected from a simple lightguide to be redirected and shaped