The Jeffree cell was an early acousto-optic modulator, best known for its use in the Scophony system of mechanical television. It was invented by J.H. Jeffree in 1934, and was a major improvement over the Kerr cell modulators used up to that time by allowing more than 200 times the available modulated light.
The Jeffree cell was an early acousto-optic modulator, best known for its use in the Scophony system of mechanical television. It was invented by J.H. Jeffree in 1934, and was a major improvement over the Kerr cell modulators used up to that time by allowing more than 200 times the available modulated light.
Source: Wikipedia "Jeffree cell" · CC BY-SA 4.0
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