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Patent Searching and Data


Title:
ZOOM LENS AND IMAGING DEVICE
Document Type and Number:
Japanese Patent JP2005266173
Kind Code:
A
Abstract:

To provide a compact zoom lens system for attaining thinning of the interior direction of a camera that is used for a video camera, a digital still camera or the like.

The zoom lens system for performing variable magnification by comprising a plurality of groups and changing group intervals includes: a reflection member M for folding an optical axis up to approximately 90 degrees in a first group GR1 of fixing during zooming; a second group GR2 which is movable during zooming and has negative refracting power at an image side of the first group GR1 by including at least a negative group at an object side from the reflection member M; and at least an optical amount regulation material ST1 of fixing during zooming, changes an angle by the reflection member M during reducing a barrel, and stores the negative group in the first group GR1 in its space.


Inventors:
IWAZAWA YOSHITO
Application Number:
JP2004000077211
Publication Date:
September 29, 2005
Filing Date:
March 17, 2004
Export Citation:
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Assignee:
SONY CORP
International Classes:
G02B15/167; G02B15/16; G02B15/173; G02B15/177; G02B15/20; H04N5/225; G02B5/04; H04N101/00; (IPC1-7): G02B15/167; H04N5/225
Attorney, Agent or Firm:
Akira Koike
Eiichi Tamura
Seiji Iga