Photosensitive semiconductor device.

摘要

A radiation-sensitive semiconductor device, more particularly but not exclusively a photo detection arrangement for determining the position of a luminous spot. The device comprises a semiconductor body 1 having at least two radiation-sensitive diodes (4 to 7) and means for amplifying the photocurrent generated by the luminous spot. According to the invention, the means consist of transistors (14 to 17) arranged outside the area of the semiconductor body occupied by the radiation-sensitive diodes. Each transistor is assigned to and connected to a radiation-sensitive diode, while at least the active parts of the transistors are arranged more closely to each other in the semiconductor body than the diodes to which they are assigned. The invention further relates to a focusing arrangement comprising such a semiconductor photodetector.