Camera module group

Abstract

The present invention provides a camera module, which comprises a lens holder, a lens tube positioned in the lens holder, a lens module in the lens tube, a photosensitive element towards the lens module and a drive mechanism to drive the lens tubes to move in the lens holder. The present invention is characterized in that: The camera module is additionally composed of a distance measuring instrument in the lens holder to measure a distance between an image space focus and a photosensitive plane of the photosensitive element and convert the distance into that of objects to be photographed during focusing and imaging these objects. Due to the distance measuring instrument, the camera module of the present invention is provided with a function of object distance measuring and will not influence camera module size, maintenance difficulty, power consumption and photograph effect.

Description

technical field [0001] The invention relates to camera technology, in particular to a camera module. Background technique [0002] The camera module can record the appearance and color of the subject, and is widely used in various fields of life and production. However, in some occasions (such as architectural surveying), in addition to recording the appearance and color of the subject, it is also necessary to record the distance between the subject and the shooting location (ie, the object distance). However, traditional camera modules do not provide this function of measuring object distance, and people have to use other external measurement tools for distance measurement. [0003] Subsequently, people attached the distance measuring device to the shooting device, and a "distance measuring digital camera" appeared. The range-finding digital camera includes a digital camera body and a laser range finder attached to the outside of the digital camera. The laser rangefinder...

AI Technical Summary

Problems solved by technology

[0004] Yet this distance-finding type digital camera has the following disadvantages: (1) the laser range finder is attached to the outside of the digital camera and will increase the volume of the digital camera, which goes against the trend of miniaturization of electronic products; (2) the laser range finder The optical components of the laser rangefinder are exposed, easy to be covered with dust or other optical pollution, maintenance is difficult, and the service life is not long; (3) The laser rangefinder performs long-distance ranging, which consumes a lot of power, and the power consumption is reduced to extend the limited storage capacity of electronic products. The usage time of the battery is the main consideration in the design of electronic products at present; (4) The laser of the laser rangefinder hits the shooting object and affects the shooting effect

Images