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

Carclo Technical Plastics

600 Depot Street - Latrobe -PA 15650 - USA

Tel: +1 724 539 6995

JVS Sales & Technical Consultants GmbH

Wiesenstrasse 104 - 53639 Königswinter - Germany

Tel: +49 2244 918 130

LHI 778, LHI 874, LHI 878, LHI 944, LHI 958, LHI 968, PYD 1096, PYD 1098, PYD 1388, PYD 1389, PYD 1394, PYD 1788, PYD 1798

Type A

Type  B

Type C


SDA 02-054, RE 200B

LHI 1128, PYQ 1046, PYQ 1048, PY 1348, PYQ 5868, PYQ 5848


RE 46B

PYQ 1398

RE 431 B

PF11CN, PF11HC, PF11LR, PF111, PF19, PF21, PF24B, PF31, PF24C, PF40, PF37, PF41, PF60, PF68, PF7, PF17**,  Diamond 37**

PF11CN*, PF11HC*, PF11LR*, PF111, PF19*, PF21*, PF24B*, PF31, PF24C*, PF40*, PF37, PF41*, PF60*, PF68, PF17**

PF11CN, PF11HC, PF11LR, PF111, PF19, PF21***, PF24B***, PF24C***, PF40***, PF41*, PF60***, PF7***

PYQ 1348

Type D

Type  E

Type F

PYD 5190, PYD 5790


LHI 906

PF11CN*, PF11HC*, PF11LR*, PF111, PF19*, PF21*, PF24B*, PF31*, PF24C*, PF40*, PF37*, PF41*, PF60*, PF68*, Diamond 37

PF11CN, PF11HC, PF11LR, PF111, PF17, PF19, PF21*, PF24B*, PF24C*,  PF41*, PF60*, PF31*, PF37*

PF111, PF17, PF31*, PF41*

PYD 5731

Type G

Type  H

LHI 1148, PYQ 2898

PF11CN, PF11HC, PF11LR, PF111, PF19, PF21*, PF24B*, PF24C*,  PF41*, PF60*, PF31*, PF37*

PF11CN*, PF11HC*, PF11LR*, PF111, PF17, PF19*, PF21*, PF24B*, PF24C*, PF40***, PF41, PF60***, PF68***, PF7***

Type I


PF11CN*, PF11HC*, PF11LR*, PF111, PF17**, PF19*, PF21*, PF24B*, PF24C*, PF40*, PF41, PF68*, PF7*

*     May work with reduced signal.  Recommend trial
**   See above
*** With correct orientation - 90 degree from the drawing on pyro table

When designing a PIR sensor it is critical to choose the most appropriate pyro sensor. The type and model of sensor need to be matched to the optical system so that the desired detection area is achieved and so that sensor is able to generate enough signal for detection to be successful.

Typical pyro sensor types

A variety of pyro sensors are available from several manufacturers.  Carclo has lenses to support most common sensors.

Choose your sensor element

Type J


Needs to be tested

Please note sensor height

** For some lenses the optical distance is critical- e.g. must equal 3.6+-0.1mm on drawing "Optical Distance" or a spacer under Pyro to achieve correct focal length to lens.

Beware of Pyro orientation.