Title:
FINDER
Document Type and Number:
Japanese Patent JP3724678
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a finder capable of displaying a mark image excellent in visibility, with simple constitution.
SOLUTION: A target mark 23 integrally provided with an objective is constituted in such a manner that four linear parts 23a-23d in which plural reflection parts 25 are provided side by side are arranged to be radial from the center position O of a finder screen. Each reflection part 25 is formed to a shape like a convex or concave conical body. The reflection part 25 has a reflection surface absolutely being perpendicular to illuminating light projected in any direction, because a conical surface is used as the reflection surface. The reflected light becomes strong light whose quantity is constant. Therefore, the images of the linear parts 23a-23d constituted in such a manner that the plural reflection parts 25 are provided side by side become almost linear clear images and a distinct target mark image is displayed in the finder screen.
Inventors:
Kazumi Koike
Application Number:
JP12371597A
Publication Date:
December 07, 2005
Filing Date:
May 14, 1997
Export Citation:
Assignee:
Fuji Photo Film Co., Ltd.
International Classes:
G03B13/08; (IPC1-7): G03B13/08
Domestic Patent References:
| JP8248479A | ||||
| JP8292473A | ||||
| JP57030823A | ||||
| JP64038739A | ||||
| JP2120727A | ||||
| JP61107122A |
Attorney, Agent or Firm:
Kazunori Kobayashi