Electro-optic element and scanning optical device

Optical: systems and elements – Optical modulator – Light wave temporal modulation

Reexamination Certificate

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C359S254000, C359S255000, C359S251000

Reexamination Certificate

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07817325

ABSTRACT:
An electro-optic element includes an electro-optic crystal having a birefringent property, and in which a refractive index distribution is generated in accordance with an intensity of an electric field caused inside, a pair of intensity modulating electrodes for applying a voltage for varying the birefringent property of the electro-optic crystal, a pair of scanning electrodes for applying a voltage for varying the refractive index distribution of the electro-optic crystal, and a polarization selection member provided at least on a side of a laser beam emission end face out of a laser beam entrance end face and the laser beam emission end face of the electro-optic crystal, and for selectively transmitting a part with a specific vibration direction out of a light beam emitted from the electro-optic crystal.

REFERENCES:
patent: 3938878 (1976-02-01), Fox
patent: 4387343 (1983-06-01), Kondo
patent: 4614408 (1986-09-01), Mir et al.
patent: 4856094 (1989-08-01), Heidrich et al.
patent: 5264951 (1993-11-01), Takanashi et al.
patent: RE38809 (2005-10-01), Yao
patent: A-01-245780 (1989-09-01), None

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