Carclo Technical Plastics ltd.
47 Waters Way -
Tel: +44 (0) 208 685 0500
Carclo Technical Plastics
600 Depot Street -
Tel: +1 724 539 6995
JVS Sales & Technical Consultants GmbH
Wiesenstrasse 104 -
Tel: +49 2244 918 130
Free Form designs open new and exciting possibilities in the design of PIR optics. This allows the Fresnel facets to be placed at their optimum focal length and orientated normal to the detection direction to reduce lens aberrations. Simply put, lenses can be produced that are more sensitive and aesthetically attractive.
Conventional lens design
Spherical lens form design
Increased sensitivity and range
In many cases it now becomes possible to also design flat lenses with a similar or better performance than conventional domed lenses
Much more sophisticated applications are now possible by using multiple detectors, multi-
Free Form Fresnels allow for more control and optics can now be optimised for much more sophisticated applications
Using the Free Form Fresnel non circularly symmetric lens forms, not only can the geometry be corrected but it has been proposed that the shape of the detection zones may be also be asymmetrically changed.
This could allow spatial filtering of the detected target with elongated or even shaped detection zones.
Patented Free Form Fresnel (FF) technology ensures the lens detection zones are undistorted and highly focused for a higher resolution and more reliable zone sensing.
Using Free Form Fresnel (FF) lens technology, it is now possible to produce high performance flat lens arrays, which previously could only be achieved in 3D formed lens products.
In the past it was only possible to maintain zone definition by tilting the Fresnel facets, meaning that the lens had to have a 3D appearance. Using this new lens facet design, it is now possible to create a more aesthetically pleasing flat lens, which can be flush fitted into low profile wall and ceiling mounted housings.
To find out how Free Form Fresnels can improve your products please contact us