Title:
ZOOM LENS MECHANISM HAVING MACROMECHANISM
Document Type and Number:
Japanese Patent JPH01123206
Kind Code:
A
Abstract:
PURPOSE:To allow stable and easy operation of the macrophotographing of a video camera by providing a detecting part which detects the boundary between a zoom region and macro region, then electrically setting and electrically controlling a zoom photographing mode and macrophotographing mode by means of a macroswitch. CONSTITUTION:The detecting part which detects the boundary between the zoom region and the macro region is provided and the zoom- and macrophotographing modes are electrically set by means of the macroswitch 18. These photographings are so electrically controlled that both a zoom lens system 16b and a focusing lens system 16a can be operated when existing in the zoom region and that the focusing lens system is fixed and only the zoom lens system can be operated when existing in the macro region. The macrophotographing by operating the macroswitch is thereby enabled in the same manner as for the zoom photographing when a macroswitch is pushed. The stable macrophotographing without generating the surface wavy component of the image plane is thus executed.
Inventors:
FUNO KATSUHIKO
Application Number:
JP28168987A
Publication Date:
May 16, 1989
Filing Date:
November 07, 1987
Export Citation:
Assignee:
RICOH KK
International Classes:
G02B7/08; G02B7/105; (IPC1-7): G02B7/08; G02B7/105
Attorney, Agent or Firm:
Shigeo Noguchi