Light beam deflector and related systems

作者: Andrew V Haeff

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参考文章(7)
Thomas W. Sukumlyn, Variable-light refractor ,(1930)
Edward F Flint, Variable focus lens ,(1941)
Luca Wallace V De, Variable power fluid lens ,(1961)
Harold C Hogencamp, Stewart L Clothier, Scanning method and apparatus ,(1939)
Paul J Kibler, Light modulation system ,(1945)