Title:
光ファイバ用レーザ光入射光学装置
Document Type and Number:
Japanese Patent JP4417932
Kind Code:
B2
Abstract:
In a shielding case, a condenser lens condenses a laser beam output by a laser oscillator to inject the laser beam into an entrance end face of an optical fiber disposed posterior to a focusing point of the laser beam. Ventilation of an ambient gas in the shielding case is carried out by ventilating means, and the ambient gas bringing about ionization in the vicinity of the focusing point of the laser beam is eliminated, thereby preventing the outbreak of air breakdown.
Inventors:
Makoto Ishibashi
Application Number:
JP2006196715A
Publication Date:
February 17, 2010
Filing Date:
July 19, 2006
Export Citation:
Assignee:
Toshiba Corporation
Toshiba Electron Tube Devices Co., Ltd.
Toshiba Electron Tube Devices Co., Ltd.
International Classes:
G02B6/42; H01S3/00
Domestic Patent References:
| JP55065921A | ||||
| JP2005148549A | ||||
| JP2000208834A | ||||
| JP2005242292A | ||||
| JP2004128058A | ||||
| JP6210478A | ||||
| JP2005217119A |
Attorney, Agent or Firm:
樺澤 襄
Satoshi Kabazawa
Satoshi Kabazawa