Title:
光装置
Document Type and Number:
Japanese Patent JP3994737
Kind Code:
B2
Abstract:
A VIPA plate having a configuration where a translucent reflection film and a total reflection film are respectively arranged on one side and the other side of a transparent parallel plate can be used as a wavelength dispersion compensator by using a special mirror and a lens. However, the transparency characteristic of the wavelength dispersion compensator using such a VIPA plate is a periodical characteristic which is asymmetric with a central wavelength in a wavelength regime. Accordingly, not parallel light but converged or diverged light having angular dispersion is input to an etalon plate, so that a filter whose transparency characteristic is an asymmetric periodical characteristic which is reverse to the VIPA plate is configured for the central wavelength in the wavelength regime. With this filter, the transparency characteristic of the wavelength dispersion compensator using the VIPA plate is optimized.
Inventors:
Nobuaki Mitamura
Yuuzumi Izumi
Yuichi Kawabata
Yuuzumi Izumi
Yuichi Kawabata
Application Number:
JP2002002682A
Publication Date:
October 24, 2007
Filing Date:
January 09, 2002
Export Citation:
Assignee:
富士通株式会社
International Classes:
G02B5/28; G02B27/00; G02B6/293; G02B6/34
Domestic Patent References:
| JP2000511655A | ||||
| JP2000028849A | ||||
| JP11119030A | ||||
| JP9289349A |
Foreign References:
| WO1999009448A1 |
Attorney, Agent or Firm:
Junichi Yokoyama
Previous Patent: インクジェット記録用インク、インクジェット記録用インクセット及びイ...
Next Patent: ハロゲン化銀乳剤、ハロゲン化銀写真感光材料、ハロゲン化銀カラー写真...
Next Patent: ハロゲン化銀乳剤、ハロゲン化銀写真感光材料、ハロゲン化銀カラー写真...