Lens barrel

Patent metadata

Field	Value
Publication number	US-9936136-B2
Application number	US-201615354471-A
Country	US
Kind code	B2
Filing date	Nov 17, 2016
Priority date	Nov 25, 2015
Publication date	Apr 3, 2018
Grant date	Apr 3, 2018

Abstract

Lens barrel 3 is provided with a first lens frame (first group lens frame 10 ) holding a first lens group (first group lens G 1 ), a second lens frame (second group lens frame 20 ) holding a second lens group (second group lens G 2 ), and resilient members (leaf springs 14 ). Second lens frame 20 is disposed inside of first lens frame 10 , and furthermore, can be moved relatively to first lens frame 10 in the direction of optical axis AX. The resilient members (leaf springs 14 ) are disposed between first lens frame 10 and second lens frame 20 in such a manner as to urge second group lens frame 20 inward against first lens frame 10.

First claim

What is claimed is:

1. A lens barrel comprising:
a first lens frame that holds a first lens group;
a second lens frame that holds a second lens group; and
a resilient member that has one end fixed to the first lens frame, and at least a part of the resilient member between the one end and another end serves as a leaf spring that is brought into contact with a portion of the second lens frame,
wherein the second lens frame is disposed in the first lens frame and, is movable relatively to the first lens frame along an optical axis, and
wherein the resilient member is disposed between the first lens frame and the second lens frame in such a manner that the leaf spring urges the portion of the second lens frame radially inward.

2. The lens barrel according to claim 1 , wherein the second lens group has a image blur correction lens, and the first lens group is disposed closer to an object than the second lens group is.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Iwasaki Shinichi
• Koga Akira
• Ishiyama Kiyokazu

Classifications

• H04N23/687 Primary

  by shifting the lens or sensor position · CPC title

• G02B27/646

  compensating for small deviations, e.g. due to vibration or shake (movement of one or more optical elements for control of motion blur in cameras, projectors or printers G03B2205/0007; image stabilisation in cameras peculiar to the presence or use of an electronic image sensor H04N23/68) · CPC title

• G02B7/10

  by relative axial movement of several lenses, e.g. of varifocal objective lens · CPC title

• H04N5/23287 Primary

  Electricity · mapped topic

• G02B7/026

  using retaining rings or springs (G02B7/027 takes precedence) · CPC title