Excelitas Technologies Singapore Pte. Ltd.

Wolfgang Schmidt

Arthur John Barlow

Juergen Schilz

An apparatus configured to sense presence and motion in a monitored space is presented. The apparatus includes a dual-element assembly with a first thermal sensing element and a second thermal sensing element configured to produce a direct current output that is sustained at a level substantially proportional to an amount of thermal energy being received at the thermal sensing elements. A lens array (or equivalent optics) is coupled to the elements, having a plurality of lenses directing incident thermal energy from a plurality of optically-defined spatial zones onto the sensing elements. An electronic circuitry is configured to read a resulting signal of the dual-element assembly and an individual output signal of each the first thermal sensing element and the second thermal sensing element.

Motion and presence detector

A radiation sensing device for sensing first radiation () comprises a radiation sensor () for sensing the first radiation and at least one first radiation guiding member () forming at least a part of a first radiation path for guiding, and preferably converging or focusing, the first radiation towards the sensor. The first radiation guiding member () also forms at least a part of a second radiation path for guiding second radiation emitted by an illumination device (). A control circuit () comprises a first sensor circuit () for operating one or more radiation sensors (), an illumination circuit () for operating one or more illumination devices (), and at least one connection () amongst said circuits ().

Radiation sensing device and control circuit

An apparatus configured to sense presence and motion in a monitored space includes one or more thermal sensing devices and a lens array. Each thermal sensing device is configured to produce a direct current output that is sustained at a level substantially proportional to an amount of thermal energy being received at the thermal sensing device. The lens array is coupled to the one or more thermal sensing devices and includes multiple lenses, each of which is configured to direct incident thermal energy from at least a respective one of multiple different physical zones located within the monitored space onto the one or more thermal sensing devices.

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Wiesbaden, Germany

Wolfgang Schmidt