Lens retracting mechanism and its retracting method

Abstract

The invention provides a lens retraction mechanism and a corresponding retraction method thereof which retracts the lens from the picturing state into a container space in a mode of inclined plane withdraw. The lens retraction mechanism comprises a bearing seat which comprises a base board, a guide rail which is arranged on the base board and the container space, a framework which can move opposite to the bearing seat along the picturing optical shaft of the lens, a guide shaft whose one end is connected with the framework and the guide rail does not move opposite to the framework, and a lens set supporting seat which is used for holding a lens set fixedly and which comprises a sliding part moving along the guide rail. When the lens is retracted, the guide shaft is driven by the framework to move towards the base board along the picturing optical shaft; the lens set moves along the guide rail in the combined drive of the guide shaft and the guide rail, as well as moves opposite to the guide shaft and finally falls into the container space which is deviated from the optical shaft. The lens retraction mechanism has the advantages of stable retraction and no failure.

Description

【Technical field】 [0001] The invention relates to a retractable lens that can be installed on optical photography equipment such as a camera, video camera, etc., especially a lens retracting mechanism and a retracting method thereof. 【Background technique】 [0002] In order to allow users to use the same camera to take pictures of different far and near scenes, current optical photography equipment such as digital cameras and digital video cameras are equipped with zoom lenses. All can be accurately imaged on the imaging component. For the aforementioned optical photography equipment, the larger the zoom factor, the longer the extension length of the lens barrel, but users usually do not mind the length of the lens when shooting, but care about whether the camera (video camera) after the lens retracts is enough Thin and short for easy portability. [0003] The conventional lens retracting mechanism is shown in Fig. 1, and the lens includes a lens barrel 9 and a first lens ...

AI Technical Summary

Problems solved by technology

Because the lens retracting mechanism uses multiple gears, the structure is quite complicated, and it must be ensured that the driving gear and the driving gear and between the driving gear and the driven gear are tightly meshed and the movement is synchronized, as long as one tooth of one gear appears problem, the lens retraction mechanism cannot realize its function

In addition, the gears will inevitably wear out after a long period of movement, and it is easy to cause a matching error between the two gears that cooperate with each other.

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