Hemispherical opening and closing lens blocking device based on gear structure

Abstract

The invention discloses a hemispherical opening and closing lens shielding device based on a gear structure, which includes: a flap group, including at least two flaps, and the at least two flaps are pivotally connected on the same rotation axis; each flap The sheet has a corresponding closed position and a corresponding open position. When each flap is in the corresponding closed position, it forms a hemispherical spherical surface, and the hemispherical spherical surface covers the protruding lens. In addition; the gear set is used to drive each flap of the flap set to rotate between the corresponding closed position and the corresponding open position, so that the flaps reach the corresponding closed position and the corresponding open position at the same time; the motor is used for the gear The group provides power. The invention drives a plurality of petals to rotate at different speeds and directions through a gear set, and only one motor can realize the driving and accurate positioning of the multiple petals, with simple structure, accurate moving position, stable and reliable components, and low processing difficulty.

Description

Technical field [0001] The invention relates to a shielding device for a hemispherical lens that can be opened and closed, in particular to a hemispherical lens shielding device that can be opened and closed based on a gear transmission structure. Background technique [0002] Cameras, photography and other image acquisition equipment are basically equipped with lens blocking devices. When the equipment is not capturing images, the blocking devices are closed to protect the lens and photosensitive devices. When shooting is required, the blocking devices are opened manually or mechanically. Common mechanical occlusion devices generally adopt the shutter type and are designed to move in translational opening and closing. This will not affect the imaging when using a lens with a small viewing angle range, but when using a lens with a large field of view such as ultra-wide angle and fisheye Because the front end of this type of lens has a convex lens unit, if the position of the lens...

AI Technical Summary

Problems solved by technology

The common mechanical blocking device generally adopts the baffle type, which is designed for translational opening and closing movement. This will not affect the imaging when using a lens with a small viewing angle, but when using a lens with a large viewing angle such as ultra-wide-angle and fisheye , because the front end of this type of lens has a protruding lens unit, if the position of the lens remains unchanged, the mechanical structure of the translation block will usually still be located within the viewing angle range of the lens after opening, reducing the effective imaging range

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