Optical scanning system for scanning object with light beam and

Details Optical scanning system for scanning object with light beam and Optical scanning system for scanning object with light beam and

1990-06-26

1992-09-01

Hille, Rolf

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359254, 359259, 359246, 359 72, G02F 101

Patent

active

051444712

ABSTRACT:
An electromagnetic radiation beam scanning system for scanning an object with an electromagnetic radiation beam. The scanning system comprises first and second beam-narrowing devices which are arranged so as to have elongated light-transmission regions, respectively, and which are overlapped each other so that the light-transmission regions intersect each other. Each of the beam-narrowing devices includes a light modulation layer showing an electro-optic effect, first and second electrodes disposed so as to sandwich the light modulation layer, first and second polarizers disposed so as to sandwich the light modulation layer and a power source for applying voltages to the first and second electrodes. The light modulation layer combined with the polarizers forms the elongated light-transmission region in response to application of the voltages to the first and second electrodes due to the power source so as to produce a narrowed beam when a light beam is incident thereon. The position of each of the light-transmission regions in each of the first and second beam-narrowing devices is arranged to be movable in response to variation of at least one of the application voltages due to the power source.

REFERENCES:
patent: 4191955 (1980-03-01), Robert
patent: 4236150 (1980-11-01), Chern
patent: 4911536 (1990-03-01), Ditzik
Applied Optical Electronics Handbook: pp. 534-546.

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