Radiation sensing device and control circuit

摘要

A radiation sensing device for sensing first radiation (15) comprises a radiation sensor (11) for sensing the first radiation and at least one first radiation guiding member (13) 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 (13) also forms at least a part of a second radiation path for guiding second radiation emitted by an illumination device (12). A control circuit (20) comprises a first sensor circuit (21) for operating one or more radiation sensors (11), an illumination circuit (22) for operating one or more illumination devices (22), and at least one connection (26) amongst said circuits (21, 22).

主权项

1. A radiation sensing device for sensing a first radiation, comprising;
a radiation sensor for sensing the first radiation; and a first radiation guiding member forming at least a part of a first radiation path for guiding the first radiation towards the sensor,
wherein 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, andwherein the radiation sensor is part of a sensor circuit and the illumination device is part of an illumination circuit, and the illumination circuit is adapted to switch on the visible light illuminator in accordance with a detection signal from the sensor circuit; and a second radiation guiding member forming at least a part of said first radiation path.