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Patent Searching and Data


Title:
HOLDING DEVICE FOR LENS
Document Type and Number:
Japanese Patent JPS63141011
Kind Code:
A
Abstract:

PURPOSE: To preclude an axis shift and to improve the accuracy of a lens by providing plane parts which contact each other outside the effective optical paths of the 2nd and the 3rd lenses, and adhering the 2nd and the 3rd lenses on those plane parts.

CONSTITUTION: The plane parts 2a and 3a are provided outside the effective optical paths of the 2nd and the 3rd lenses 2 and 3 consisting of plastic lenses, and the 2nd and the 3rd lenses 2 and 3 are aligned with each other with high accuracy by sliding the lenses mutually on the plane parts 2a and 3a. The plane parts 2a and 3a are adhered after the axis alignment to prevent their axis shift, and the 3rd lens 3 is held by the 2nd lens 2. Further, the abutting part 2a of the 2nd lens 2 is made to abut on the lens pressure surface 4b of a lens barrel 4b and the respective lenses are pressed by a pressure member 5 on the side of the 1st lens 1.


Inventors:
KUDO YOSHINOBU
YOSHIDA KIYOHIRO
Application Number:
JP28832686A
Publication Date:
June 13, 1988
Filing Date:
December 03, 1986
Export Citation:
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Assignee:
MINOLTA CAMERA KK
International Classes:
G02B7/02; G02B9/16; (IPC1-7): G02B7/02
Attorney, Agent or Firm:
Kurata Masahiko



 
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