WIRELESS INFRARED MULTI-SPOT DIFFUSING COMMUNICATION SYSTEM

摘要

An infrared communications system includes a multi-beam transmitter (505) for producing an array of diffusing spots upon a reflecting surface (520), and a receiver (510) comprising a plurality of receiving elements, has an inependent field of view that is in line of sight of at least one of said diffusing spots (515) . The array may be in the formed of a regular grid, and the grid of diffusing spots may be formed via the emission from the transmitter of a plurality of collimated beams of equal intensity. The transmitter (505) may include a light source (1010), collimating optics (1015), and a spot array generator (1020), and each of the receiving elements may include a band pass filter (1510), a concentrator (1505), and a photodetector (1515).