CN2800329Y

CN2800329Y - Focusing device for image sensor

Info

Publication number: CN2800329Y
Application number: CN200520081058.XU
Authority: CN
Inventors: 丁治宇
Original assignee: OPOCOM OPTOELECTRONIC (XIAMEN) CO Ltd
Current assignee: OPOCOM OPTOELECTRONIC (XIAMEN) CO Ltd
Priority date: 2005-01-31
Filing date: 2005-01-31
Publication date: 2006-07-26
Anticipated expiration: 2015-01-31

Abstract

The utility model relates to a focusing device for an image sensor, which comprises an electric motor, a lens sleeve barrel, a digital camera wafer and a camera shell, wherein the lens sleeve barrel is fixedly connected with the camera shell, a barrel hole which is arranged on the outer extended end of the lens sleeve barrel is provided with a lens ring, a wafer linking seat is arranged in the camera shell and the digital camera wafer is arranged on the seat surface of the wafer linking seat which faces to the inner extended end of the lens sleeve barrel. The electric motor is fixed in the camera shell, an output shaft of the electric motor is parallel to a central shaft of the lens sleeve barrel, the end of the output shaft forms a threaded rod section and the relevant position of the wafer linking seat is provided with a threaded hole which is matched with the threaded rod section. The output shaft forms movable connection through the way that the threaded rod section is matched with the threaded hole. The utility model has the advantages of less possibility of damage of a lens, low power consumption, small size, convenient and free replacement of the lens ring, etc.

Description

The focus control of image sensor

Technical field

The utility model relates to the focus control of image sensor such as digital camera, Digital Video, specifically is meant the focus control of adjusting distance between itself and the camera lens by the dollying wafer.

Background technology

Digital technology and image processing techniques are very ripe, utilize optical principle that the traditional camera of the chemical substance exposure image on the egative film is also replaced by digital camera gradually.Digital camera, Digital Video etc. are commonly referred to as image sensor.The part digital camera also has the function of photography in short-term, and Digital Video also has single picture production function, and both difference reduce gradually, and its primary structure all comprises digital vedio recording wafer and photologging circuit, has functions such as capture, access.

Image sensor zooms out or during the image that furthers, realizes by focusing in generation, promptly by moving lens, makes itself and distance between the digital vedio recording wafer become greatly or diminish and realizes.As shown in Figure 1, perspective view for existing image sensor, Fig. 2 has shown its side structure synoptic diagram, Fig. 3 has shown the sectional view of its focusing structure, its primary structure is: an electric notor 10, one lens sleeve 20, an one digital vedio recording wafer 30 and a camera shell 40, lens sleeve 20 screw locks have an end 21 of lens collar 60 to be exposed to camera shell 40 outsides, and lens sleeve 20 can move inside and outside camera shell 40 relevant positions, the appropriate location is provided with and is subjected to the digital vedio recording wafer 30 of image planes towards lens sleeve 20 in the camera shell 40, electric notor 10 is located at appropriate location in the camera shell 40, its output shaft 11 is parallel with lens sleeve 20 center lines, its terminal threaded rod section 12 that forms, lens sleeve 20 is provided with a linked block 22 to a side one, linked block 22 is provided with a threaded hole 23 that is nested and is spirally connected with threaded rod section 12, when electric notor 10 work, can drive linked block 22 by this threaded rod section 12 and cooperating of threaded hole 23 moves, thereby make lens sleeve 20, lens collar 60 and the shooting gun barrels 70 that are sheathed on outside the lens sleeve 20 move back and forth, to realize the purpose of focusing.

As seen, above-mentioned focus control has following shortcoming: one, if image sensor and other object bump or when falling, the camera lens of its elongation is impaired easily; Two, the necessary electric notor that uses big torque could drive lens sleeve, lens collar and take gun barrel, and its power consumption is bigger; Three, use the electric notor of big torque, also can increase the size of image sensor, limit it and develop to compact direction; Four, lens collar is located at and is taken in the gun barrel, thereby is difficult to freely change the lens collar with other shooting effect.

The utility model content

The utility model provides a kind of focus control of image sensor, and its fundamental purpose is to overcome shortcoming such as the camera lens that the focus control of prior art causes because of realizing focusing by the moving lens sleeve is easily impaired, power consumption is big, volume is big.

The utility model adopts following technical scheme: the focus control of image sensor, comprise an electric notor, one lens sleeve, an one digital vedio recording wafer and a camera shell, lens sleeve is fixedlyed connected with camera shell, the tube hole of its overhanging end is provided with lens collar, be provided with a wafer continous action base in the camera shell, the digital vedio recording wafer is located at this wafer continous action base on the seat surface of lens sleeve inner extending end, electric notor is fixed in the camera shell, the central axes of its output shaft and lens sleeve, the terminal threaded rod section that forms of this output shaft, the relevant position of wafer continous action base is provided with the threaded hole that matches with this threaded rod section, and this output shaft forms by this threaded rod section and cooperating of threaded hole and flexibly connects.During electric notor work, drive wafer continous action base front and back and move back and forth, with the distance between adjustment lens sleeve, lens collar and the digital vedio recording wafer, thus the purpose of realization focusing.

Aforementioned camera shell is provided with the guide bar that extends internally, this guide bar is parallel with the output shaft of electric notor, wafer Connection Block relevant position is provided with a guide hole, this guide bar activity is matched with in this guide hole, this guide bar can guarantee that the wafer continous action base only carries out front and back and moves back and forth, and can not rotate with the output shaft of electric notor.

By above-mentioned description to the utility model structure as can be known, compare, the utlity model has following advantage with prior art: one, owing to do not have telescopic lens sleeve, so its camera lens is difficult for impaired; Two, because electric notor only need drive the wafer continous action base and the digital vedio recording wafer moves, its weight is less, thereby can adopt the less electric notor of torque, and power consumption is also corresponding to be reduced; Three, the electric notor volume of little torque is also less, thereby can reduce the overall volume of image sensor; Four, owing to do not have the structure of taking gun barrel, thereby fixing lens sleeve and lens collar thereof can be designed to be convenient to freely change the lens collar of different-effect as the traditional mechanical camera.

Description of drawings

Fig. 1 is the stereoscopic figure of existing image sensor;

Fig. 2 is the side view of existing image sensor focus control;

Fig. 3 is the cut-open view of existing image sensor focus control;

Fig. 4 is the side view of the utility model focus control;

Fig. 5 is the cut-open view of the utility model focus control.

Specific embodiment

Specific embodiment of the utility model, with reference to Fig. 4 and Fig. 5, the focus control of this image sensor, comprise an electric notor 100, one lens sleeve 200, one wafer continous action base 400, an one digital vedio recording wafer 300 and a camera shell 500, lens sleeve 200 is fixedlyed connected with camera shell 500, the tube hole of its overhanging end is provided with lens collar 600, wafer continous action base 400 is located in the camera shell 500, digital vedio recording wafer 300 is located at this wafer continous action base 400 on the seat surface of lens sleeve 200 inner extending ends, electric notor 100 is fixed in the camera shell 500, the central axes of its output shaft 101 and lens sleeve 200, these output shaft 101 terminal threaded rod sections 102 that form, the relevant position of wafer continous action base 400 is provided with and 102 sections threaded holes that match 401 of this threaded rod, and this output shaft 101 forms by this threaded rod section 102 and cooperating of threaded hole 401 and flexibly connects.During electric notor 100 work, drive wafer continous action base 400 front and back and move back and forth, with the distance between adjustment lens sleeve 200, lens collar 600 and the digital vedio recording wafer 300, thus the purpose of realization focusing.

Camera shell 500 also is provided with the guide bar 501 that extends internally, this guide bar 501 is parallel with the output shaft 101 of electric notor 100, wafer Connection Block 400 relevant positions are provided with a guide hole 402, these guide bar 501 activities are matched with in this guide hole 402, this guide bar 402 can guarantee that 400 of wafer continous action bases carry out front and back and move back and forth, and can not rotate with the output shaft 101 of electric notor 100.

Above-mentioned only is a specific embodiment of the present utility model, but design concept of the present utility model is not limited thereto, and allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should belong to the behavior of invading the utility model protection domain.

Claims

1, the focus control of image sensor, comprise an electric notor, one lens sleeve, an one digital vedio recording wafer and a camera shell, it is characterized in that: lens sleeve is fixedlyed connected with camera shell, the tube hole of its overhanging end is provided with lens collar, be provided with a wafer continous action base in the camera shell, the digital vedio recording wafer is located at this wafer continous action base on the seat surface of lens sleeve inner extending end, electric notor is fixed in the camera shell, the central axes of its output shaft and lens sleeve, the terminal threaded rod section that forms of this output shaft, the relevant position of wafer continous action base is provided with the threaded hole that matches with this threaded rod section, and this output shaft forms by this threaded rod section and cooperating of threaded hole and flexibly connects.

2, the focus control of image sensor as claimed in claim 1, it is characterized in that: described camera shell is provided with the guide bar that extends internally, this guide bar is parallel with the output shaft of electric notor, and wafer Connection Block relevant position is provided with a guide hole, and this guide bar activity is matched with in this guide hole.