Self-locking camera

Abstract

The invention discloses a self-locking camera. The self-locking camera comprises a lens, a self-locking camera external focusing device, worms (2) and (3) and an adjusting mechanism (4), wherein the self-locking camera external focusing device comprises a transmission mechanism (1) for adjusting axial relative distances among lens elements on the lens; the transmission mechanism (1) comprises two worm wheel disks (11) and (12) which are oppositely clamped on an outer circumferential surface of the lens; the worms (2) and (3) are meshed with the worm wheel disks (11) and (12); the adjusting mechanism (4) is connected with one end of each of the worms (2) and (3) and used for controlling the worms (2) and (3) to rotate; and the adjusting mechanism (4) comprises two rotating grooves (41) and (42) which are connected one end of each of the worms (2) and (3) respectively. The self-locking camera has the advantages of simple structure, low manufacturing cost, realization of accurate positioning of external focusing, and improvement on the camera imaging quality.

Description

technical field [0001] The present invention is a divisional application of the invention patent application with the application number 201310754170.4, the application date is December 31, 2013, and the title is "a self-locking camera external focusing device". The invention relates to a camera, in particular to an external focusing device for a self-locking camera. Background technique [0002] When a traditional camera takes a picture, the relative distance between the subject and the camera, that is, the object distance, changes. In order to obtain clear images of objects with different object distances on the image board through the lens, a focusing process must be performed. The current focusing process usually adopts the following two methods: 1. Change the focusing method of the image distance, keep the focal length of the lens unchanged, and change the distance between the lens and the image plate by adjusting the axial position of the entire group of lenses , tha...

AI Technical Summary

Problems solved by technology

When the external focusing device of this structure adjusts the axial relative distance of the lens on the lens, the gear plates 11', 12' of the transmission mechanism 1' and the gear shafts 2', 3' are meshed and connected to each other, so that the gear plates are adjusted and rotated. There is a rotation gap between the gear shaft and the gear shaft, which makes it impossible to accurately locate it, resulting in a large position deviation, making the relative distance of the lens inside the lens unable to reach the optimal imaging position, making the final imaging quality not high. Existing Although the technology also has some other external focusing structures, the structure is complex and the cost is high

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