Lens barrels

Abstract

The invention provides a lens barrel. When a camera collapses the lens barrel, devices in the lens barrel can be efficiently arranged, so as to shrink the lens barrel. During photographing a picture, the lens barrel 2 adjusts the positions of a first lens group 31 and a second lens group 32 to a predetermined position in a photograph axis J1 to zoom. During collapsing the lens barrel, the first lens group 31 and the second lens group 32 are transferred to a side of a CCD 35 and a focus driving mechanism 3 to obtain a compact lens barrel. Since the focus driving mechanism 3 is disposed inside the lens barrel 2, the arrangement efficiency is enhanced and the planar arrangement is minimized.

Description

technical field [0001] The invention relates to a lens barrel for a sunken digital camera with a storage position and a shooting position. Background technique [0002] Recently, the demand for miniaturization of digital cameras has not stagnated. In particular, for the purpose of improving portability, more attention has been paid to the thinning of cameras. Therefore, thinning of the lens barrel unit is required to limit the thinning of cameras. It is known that as a method of reducing the thickness of the lens barrel unit, when not in use, the distance between the lens group and the imaging element is reduced, and the lens barrel is lowered to store it. [0003] In addition, in Patent Document 1 (Japanese Unexamined Patent Publication No. 2003-315861), in the stored state, a part of the photographic lens group is shifted from the photographic optical axis and pulled in to sink, so as to reach the lens mirror in the stored state. Thinning of the barrel. In addition, in P...

AI Technical Summary

Problems solved by technology

This type of focus drive device occupies the distance of the entire length of the focus motor plus the full length of the moving screw in the direction of the photographic optical axis. In the method of Patent Document 1, the focus drive device is arranged on the lens barrel for a thinner lens barrel. The inside of the cylinder is difficult

Therefore, like the embodiment of Patent Document 2, the focus driving device has to be arranged outside the lens barrel, and when the lens barrel unit is viewed from the front, there is a problem that the lens barrel unit becomes larger in plan.

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