Ningbo Sunny Opotech Co., Ltd.

Hangzhou Santan Medical Technology Co., Ltd

Yu Wu

Hao Zhang

Bin He

Meishan Guo

Shuogui Xu

Rui Tong

Hansheng Cen

Anan Wu

Hang Yu

Liguo Liu

Tongji Jiang

Disclosed are an optical system and a camera module. The optical system sequentially includes, from an object side to an image side, a first lens, a reflective element and a second element group. The first lens has a positive refractive power, and allows propagation of light rays along a first optical axis. The reflective element changes light rays emitted from the first lens from propagating along the first optical axis to propagating along a second optical axis. The first lens and the reflective element constitute a first element group. The second element group has a positive refractive power. During an anti-shaking process, the position of an image plane of the optical system remains fixed, and the first element group rotates around a direction parallel to the second optical axis, an effective focal length f1 of the first lens and an effective focal length EFL of the optical system satisfy: 1.9<|f1/EFL|<3.0.

Optical system and camera module

A fracture reduction system includes a reduction device for reducing a fracture bone to be reduced; and a display device for displaying a posture of the fracture bone to be reduced based on a bone model. The display device can cooperate with the reduction device so that the bone model moves synchronously with the fracture bone to be reduced. The posture of the fracture bone to be reduced is displayed based on the bone model, so that the medical staff can know the current posture of the fracture bone to be reduced according to the posture of the bone model and design corresponding reduction actions specifically according to the reduction conditions, so as to reduce the difficulty and increase the precision of fracture reduction.

Fracture reduction system

Growing community of inventors

Zhejiang, China

Yu Wu