Elastic sheet and voice coil motor

Abstract

The invention provides an elastic sheet. The elastic sheet comprises a first fixed part, a first elastic part, a second elastic part, a second fixed part and a third fixed part, wherein the first fixed part is provided with a first side and a second side which are opposite to each other; the first elastic part comprises a first extended section, a second extended section and a first connecting section; the first extended section is connected with the first side; the second extended section is connected with the second fixed part; the first connecting section is connected between the first extended section and the second extended section; the first extended section and the second extended section are adjacent to each other and both extend along the direction parallel to the first side of the first fixed part basically; the second elastic part comprises a third extended section, a fourth extended section and a second connecting section; the third extended section is connected with the second side; the fourth extended section is connected with the third fixed part; the second connecting section is connected between the third extended section and the fourth extended section; and the third extended section and the fourth extended section are adjacent to each other and both extend along the direction parallel to the second side of the first fixed part basically. The invention also relates to a voice coil motor.

Description

technical field [0001] The invention relates to optical anti-shake technology, in particular to a voice coil motor applicable to optical anti-shake and a shrapnel applied to the voice coil motor. Background technique [0002] The camera module uses the shutter to control the length of time that the light is projected to the image sensor. For example, when the shutter speed is 1 / 2 second, it means that the time for the image sensor to receive light is 1 / 2 second. If within this 1 / 2 second When the same beam of light moves on the image sensor due to shaking, the image sensor will record the movement track of the light, making the captured photo blurred. In order to compensate for the light offset caused by shaking, camera modules using image stabilization systems to prevent shaking began to appear in the 1990s. For details, please refer to the paper "Optical image stabilization for digital cameras" published by Cardani B. et al. in Control Systems Magazine, IEEE (Volume26, Is...

AI Technical Summary

Problems solved by technology

[0003] With the continuous development of digital camera technology, the body of the camera is often small and light, which is easy to cause hand shake, resulting in blurred images

The following three situations are likely to produce blurred images: 1. When shooting with a long focus, since the long lens will amplify the amplitude of the camera, slight shaking will also cause greater blur, so the impact of hand vibration on the image clarity is greater than that of using wide-angle lens

2. Shooting in low-light environments. In low-light environments such as indoors and at dusk, the camera will adjust the shutter speed slower to increase the amount of light, so hand shake is more likely to occur.

These conditions can cause jitter, making the image blurred

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