Lens and camera

Abstract

PROBLEM TO BE SOLVED: To provide a lens barrel which is capable of reducing operation noise and costs while allowing a retreat lens group to retreat outward beyond an inner diameter of a fixed cylinder part.SOLUTION: In a lens barrel 10 to be switched between a collapsed and stored state and a photographing state, a movable lens barrel holding therein a plurality of lens holding members holding a plurality of lens groups respectively is held in a fixed cylinder part 21a, and the respective lens holding members locate all of the lens groups in a photographing position on the same photographing optical axis OA by a driving force from a movable lens barrel driving source (28) in the photographing state and a retreat lens holding member (51) is provided which movably holds a retreat lens group so that the retreat lens is retreated to a retreat position on the outside of the fixed cylinder part 21a in the collapsed and stored state. The lens barrel 10 includes a retreat frame driving part 41 for moving the retreat lens holding member between the photographing position and the retreat position and a driving force transmission part 42 for converting the driving force from the movable lens barrel driving source to a mode corresponding to the retreat frame driving part 41 to transmit it to the retreat frame driving part 41.

Description

technical field [0001] The present invention relates to a lens, which has a contracted form of the lens group and a use form in which the lens group is extended to a predetermined position. The present invention also relates to an imaging device including the lens. Background technique [0002] In the prior art, there is a photographic device capable of simultaneously improving the photographic performance and portability of photographic devices such as digital cameras (including digital still cameras and digital video cameras); The photographic position on the photographic optical axis shrinks to the inside of the camera frame (shrinkage storage state), so that the distance between each lens group is less than the shortest distance required for photography and reduces the distance as much as possible. And when taking pictures, each lens group stretches out from the camera frame, and the distance between each lens group reaches the distance required for photography. The ad...

AI Technical Summary

Problems solved by technology

[0005] However, in addition to the driving source for advancing and retreating, the above-mentioned existing lens also needs to be installed with a driving source for withdrawing from the frame driving mechanism. In this way, there is not only the disadvantage that the action noise when the two driving sources are driven at the same time is large, but also from reducing From the point of view of cost, there are still many things to be improved

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