Sensing unit for use at windscreen of motor car for detecting ambient light ratios, has detection regions comprising detection disks, and photodiodes formed as light sensors attached to detection regions and adjusted together at angle

摘要

#CMT# #/CMT# The unit has a detection region comprising a broad detection disk, which is aligned upwardly, and another detection region comprising a narrow detection disk, which is horizontally aligned. Two photodiodes formed as a field light sensor (13) and a prefield light sensor (14), are attached to the detection regions and are adjusted together at an angle. The detection regions intersect with each other and are normal to a surface to form a plane. The narrow detection disk comprises opening angle of maximum 40 degrees. The photodiodes are arranged on a common printed circuit board (9). #CMT#USE : #/CMT# Sensing unit for use at a windscreen of a motor car (all claimed) for detecting ambient light ratios. #CMT#ADVANTAGE : #/CMT# The two photodiodes formed as field and prefield light sensors are attached to the detection regions and are adjusted together at an angle, thus providing the field and prefield light sensors with a compact structure, with reduced number of components, and hence manufacturing the sensor unit in a cost-effective manner. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a top view of a sensor arrangement with an opening housing without a cover with an exposed printed circuit board. 2 : Sensor arrangement 8 : Plug-in connector 9 : Printed circuit board 13 : Field light sensor 14 : Prefield light sensor.