Title:
ILLUMINATING OPTICAL SYSTEM
Document Type and Number:
Japanese Patent JPH08220467
Kind Code:
A
Abstract:
PURPOSE: To provide an illuminator which uses a small number of light sources and where an illuminating angle is continuously changed by a simple mechanism.
CONSTITUTION: A recessed curved surface formed by rotating a part of a parabola around an axis perpendicular to the axis of the parabola is used as a reflection mirror 30. The light source 32 is arranged radially around the center axis 33 of the reflection mirror 30. A light beam 34 from the light source is made incident on a reflection surface in a horizontal direction. The light source 32 moves along the center axis 33 of the reflection mirror 30 and changes its position in an up-and-down direction, so that the illuminating angle of an observed object 35 is continuously changed.
Inventors:
KITAMURA GORO
Application Number:
JP2978395A
Publication Date:
August 30, 1996
Filing Date:
February 17, 1995
Export Citation:
Assignee:
TECHNO KAPURA KK
International Classes:
G02B7/00; F21S2/00; G02B7/18; G02B7/183; G02B7/198; G02B27/00; (IPC1-7): G02B27/00; G02B7/00; G02B7/183; G02B7/198
Attorney, Agent or Firm:
Yusuke Hiraki (1 person outside)