edouard Belin, Swiss Inventor

Belin receiving a telephotograph, 1920. Edouard Belin (March 5, 1876 - March 4, 1963) was a Swiss inventor. In 1907, Belin invented a photo-telegraphic apparatus called the B?linographe, a system for sending photographs over telephone and telegraphic networks. Since 1914, a photograph of report is transmitted by telephotograph. The process was improved in 1921 to enable to transmission of images by radio waves. In this apparatus, the transmitter traverses the original image point by point. At each point a measurement of light intensity is made with an electric eye. The measurement is conveyed to the receiver. There, a variable intensity light source reproduces the light measured by the electric eye, while carrying out same displacements exactly. By doing this, it exposes the photographic paper and makes it possible to obtain a copy of the original image. He died in 1907 a day before his 87th birthday

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Belin Douard Edouard Telegraphic Transmission

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