| 摘要 |
The electro-optical signal transmission takes place in a face space and has at least are transmitter and receiver. In the transmitter(s) (1) at least one transmit diode (3) has an emission wavelength range of between 800 and 900 mm, pref. 830 mm. In the receiver (8) at least one receiver diode (4) respond. only to wavelength below 900 mm, pref. 830 mm. Pref. the receiver diode is of gallium arsenide type. It may be fitted with a daylight filter, several receiver diode may be fitted with a lens with a lens with a metal sensor ring inside the lens body. USE/ADVANTAGE - For digital or analogue IR signal transmission in free space, with reduced reception, interference. |
