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:
Nov. 02, 2010
Filed:
Feb. 21, 2007
Ichiro Ueno, Isehara, JP;
Nobutaka Tanigaki, Ikeda, JP;
Noritaka Yamamoto, Ikeda, JP;
Toshiko Mizokuro, Ikeda, JP;
Takashi Hiraga, Ikeda, JP;
Norio Tanaka, Tokyo, JP;
Hiroshi Nagaeda, Ichikawa, JP;
Noriyasu Shiga, Ichikawa, JP;
Ichiro Ueno, Isehara, JP;
Nobutaka Tanigaki, Ikeda, JP;
Noritaka Yamamoto, Ikeda, JP;
Toshiko Mizokuro, Ikeda, JP;
Takashi Hiraga, Ikeda, JP;
Norio Tanaka, Tokyo, JP;
Hiroshi Nagaeda, Ichikawa, JP;
Noriyasu Shiga, Ichikawa, JP;
Dainichiseika Color & Chemicals Mfg. Co., Ltd., Tokyo, JP;
Abstract
An optical deflection apparatus includes a signal light source configured to emit signal light having one or more wavelengths, a control light source configured to emit control light having a wavelength different from the wavelength of the signal light, a thermal lens forming optical element including a light absorption layer configured to transmit the signal light and selectively absorb the control light, and a beam-condensing unit configured to cause beam-condensation of the control light and the signal light at different convergence points in the light absorption layer. The thermal lens forming optical element causes convergence and divergence of the control light and the signal light on an incidence plane of the light absorption layer or its vicinity in a light traveling direction, wherein a thermal lens is reversibly formed in the light absorption layer due to a temperature increase occurring in a region where the control light is absorbed and its peripheral region, and the thermal lens changes a refractive index to change a traveling direction of the signal light.