Prism driving device and prism assembly

Abstract

The invention discloses a prism driving device. The device comprises a carrier, a base, a reed and a circuit board, the carrier is used for bearing a prism and is rotatably connected with the base through the reed; the circuit board is installed on the base and provided with a bottom coil, the bottom of the carrier is provided with a bottom magnet corresponding to the bottom coil, the bottom coilis matched with the bottom magnet to drive the carrier to rotate relative to the base, and the reed is parallel to the bottom of the base. According to the invention, the reed is installed in a flat manner such that the manufacturing and processing are convenient, the shell can cover most of the carrier, the shell and the base are easy to close and install, and the overall reliability is stronger.

Description

technical field [0001] The invention relates to the technical field of optical imaging equipment, in particular to a prism driving device and a prism assembly. Background technique [0002] With the development of technology, many electronic devices (such as smart phones or digital cameras) now have the function of taking photos or recording videos. The use of these electronic devices is becoming more and more common, and they are developing towards the direction of convenience and thinner design, so as to provide users with more choices. As a relatively advanced device, the spring-type prism motor is more and more favored by consumers and machine manufacturers in the market. However, the spring-type prism motor on the existing market is a single-axis rotation, which involves too many parts and complicated installation process. Difficult assembly, low yield and poor reliability. In addition, the current prism project is still driven by electromagnetic technology. Due to th...

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Problems solved by technology

As a relatively advanced device, the spring-type prism motor is more and more favored by consumers and machine manufacturers in the market. However, the spring-type prism motor on the existing market is a single-axis rotation, which involves too many parts and complicated installation process. Difficult to assemble Low yield rate and poor reliability

In addition, the current prism project is still driven by electromagnetic technology. Due to the large size and mass of the prism, coupled with the potential energy of the reed, it is difficult to drive the ordinary magnet + coil scheme, and because the power produced by the current electromagnetic field and the power of the reed The potential energy is not in a balanced ratio, and there will be hysteresis when driving, which will lead to problems such as unsmooth driving of the prism

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