The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 21, 2010
Filed:
Jun. 29, 2005
Hisashi Minemoto, Osaka, JP;
Yasuo Kitaoka, Osaka, JP;
Isao Kidoguchi, Hyogo, JP;
Takayuki Negami, Osaka, JP;
Yasuhito Takahashi, Osaka, JP;
Toshimi Nishiyama, Osaka, JP;
Kimihiko Shibuya, Osaka, JP;
Hisashi Minemoto, Osaka, JP;
Yasuo Kitaoka, Osaka, JP;
Isao Kidoguchi, Hyogo, JP;
Takayuki Negami, Osaka, JP;
Yasuhito Takahashi, Osaka, JP;
Toshimi Nishiyama, Osaka, JP;
Kimihiko Shibuya, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The present invention provides an acoustooptic device usable even with light in the ultraviolet region, free from laser damage and optical damage, and excellent in acoustooptic performance and an optical imaging apparatus using the same. The acoustooptic device according to the present invention includes a high-frequency signal input part (), a transducer part (), and an acoustooptic medium (). A high-frequency signal input from the high-frequency signal input part () is converted into a mechanical vibration by the transducer part (), and an optical characteristic of the acoustooptic medium () varies depending on the mechanical vibration. The acoustooptic medium is formed of a Group III nitride crystal. The optical imaging apparatus according to the present invention includes a light source, an acoustooptic device, a driving circuit, and an image plane. Light from the light source is diffracted by the acoustooptic device in accordance with a signal from the driving circuit and the resultant diffracted light forms an image on the image plane. An acoustooptic medium of the acoustooptic device is formed of a Group III nitride crystal.