Title:
LENS BARREL FOR CAMERA
Document Type and Number:
Japanese Patent JPH05288979
Kind Code:
A
Abstract:
PURPOSE:To obtain the lens barrel of a camera which executes a zooming action that the change of a viewing angle is almost constant in a telephoto state from a wide-angle state. CONSTITUTION:By driving the rotation of a first cam member 13 that relation between the moving amount of a lens and the rotating angle of the cam member 13 is not linear, the lens 7 of a first group is moved with respect to a camera body 14. On the other hand, the lens 10 of a second group is moved as much as the differential of the moving amount between the lens 7 of the first group and the lens 10 of the second group by driving the rotation of a second cam member 3 that the relation between the moving amount of the lens and the rotating angle of the cam member is linear.
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Inventors:
UNO TETSUYA
MIKI SHINYA
KAMIYA MASATOSHI
MIKI SHINYA
KAMIYA MASATOSHI
Application Number:
JP9435492A
Publication Date:
November 05, 1993
Filing Date:
April 14, 1992
Export Citation:
Assignee:
MINOLTA CAMERA KK
International Classes:
G02B7/04; G02B7/10; (IPC1-7): G02B7/10; G02B7/04
Attorney, Agent or Firm:
Aoyama Ryo (2 outside people)