Optical: systems and elements – Optical modulator – Light wave directional modulation
Reexamination Certificate
2005-06-07
2005-06-07
Mack, Ricky (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave directional modulation
C359S312000, C359S285000
Reexamination Certificate
active
06903862
ABSTRACT:
The present invention provides an ultraviolet acoustooptic device including: a radio-frequency signal input part; a transducer unit for converting a radio-frequency signal into a mechanical vibration; and an acoustooptic medium whose optical characteristic varies according to the mechanical vibration. In the ultraviolet acoustooptic device, light entering the acoustooptic medium is ultraviolet light having a wavelength of 380 nm or shorter, and the acoustooptic medium is formed of an oxide single crystal containing at least boron as a component of its unit cell, a LiNbO3crystal, or a LiNbO3crystal doped with MgO. Thus, an acoustooptic device can be obtained in which no laser damage nor optical damage is caused, and an ultraviolet acoustooptic device and an optical imaging apparatus using the same can be provided that do not necessarily require to be water-cooled.
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Minemoto Hisashi
Nishiyama Toshimi
Shibuya Kimihiko
Mack Ricky
Matsushita Electric - Industrial Co., Ltd.
Merchant & Gould P.C.
Thomas Brandi
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