Title:
FRESNEL TYPE MIRROR
Document Type and Number:
Japanese Patent JP2008292665
Kind Code:
A
Abstract:
To provide a Fresnel type mirror covering an expanded wide visual field even if the number of the mirrors is only one.
In a configuration of this Fresnel type mirror 1, a convex mirror 10 is separated into a large number of annular mirror surfaces 3 having different radii with a central axis O passing through a sphere center as the center, and the annular mirror surfaces 3 are planarly rearranged with the central axis O as a common axis. In the Fresnel type mirror 1 with the configuration, a spherical surface radius R of the annular mirror surface 3 positioned in an external area to the annular mirror surface 3 positioned in a center area on the central axis side is reduced.
Inventors:
KOYAMA YOSHINORI
IWATA NOBUYUKI
IWATA NOBUYUKI
Application Number:
JP2007136674A
Publication Date:
December 04, 2008
Filing Date:
May 23, 2007
Export Citation:
Assignee:
KOMY CO LTD
International Classes:
G02B5/08
Domestic Patent References:
| JPH09185122A | 1997-07-15 | |||
| JPS56115102A | 1981-09-10 |
Attorney, Agent or Firm:
Shinichi Ogawa
Takashi Noguchi
Kazuhiko Saishita
Takashi Noguchi
Kazuhiko Saishita
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