Making PIR Work Leading design and manufacture of PIR Lenses

Carclo Technical Plastics ltd.

47 Waters Way - Mitcham - Surrey - CR4 4HR - UK

Tel: +44 (0) 208 685 0500

sales@carclo-fresnels.com


Carclo Technical Plastics

600 Depot Street - Latrobe -PA 15650 - USA

Tel: +1 724 539 6995

sales@carclo-usa.com


JVS Sales & Technical Consultants GmbH

Wiesenstrasse 104 - 53639 Königswinter - Germany

Tel: +49 2244 918 130

sales@carclo-fresnels.com



Free Form Optics Advantages

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-zone detectors or Fresnel lenses where the array is broken down into many more zones to give a patchwork of detection regions.


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.




Free Form Optics - A whole new generation of products are now possible.

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.






Conventional Fresnel lens gives a distorted zone image

Free Form lens gives undistorted zone image

To find out how Free Form Fresnels can improve your products please contact us

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