CN101191977A - Pick-up head module and system using image sensor for automatic focusing - Google Patents

Abstract

The present invention relates to a camera module and system utilizing image sensor for automatic focusing. The module comprises a sensor module and a controller, wherein, focusing is realized through the movement of the sensor module; the controller is used to control the movement of the sensor module, so as to change the total optical path difference and focus image information. The present invention is characterized in overcoming the defect that the prior art realizes automatic focusing by moving lenses, realizing focusing by moving the sensor module or a PCB plate of a fixed sensor, realizing automatic focal length regulation and leading cameras to be more flexible.

Description

Utilize imageing sensor focus automatically camera module and system

[technical field]

The present invention relates to camera, particularly utilize imageing sensor focus automatically camera module and system.

[background technology]

Autofocus system on the market all is to realize automatic focusing by moving lens at present, makes the lens design more complicated like this, and relatively more difficult on some optical application.

[summary of the invention]

At the problem of above-mentioned existence, the purpose of this invention is to provide the pcb board that utilizes moving image transmitting sensor or mobile fixation of sensor and realize focusing, can change existing camera lens like this.

For realizing above-mentioned purpose, utilize the imageing sensor camera module of focusing automatically to comprise:

One image sensor module is caught image information;

One controller, in order to moving of control chart image-position sensor, thereby it is poor to change its total optical path, and image information is focused on.

The present invention also provides and utilizes the imageing sensor camera system of focusing automatically, and its step comprises:

The sensor assembly of A, camera is respectively caught the different image information of three width of cloth three positions;

B, image information are transferred to computer (COMPUTER) or digital signal processor (DSP) by wired or wireless mode, after utilizing computer (COMPUTER) or digital signal processor (DSP) that the image of three width of cloth diverse locations is carried out operational analysis, estimate out the position of accurate focusing;

C, controller move on to the focusing position that generates with sensor assembly, catch image and computed image and whether meet the requirements of sharpness.

If D is still dissatisfied to the image that focuses on, can be forward and do minute movement backward and catch image information, image information captured is done operational analysis, provide the position that to focus, controller moves the position that generates with sensor assembly, catches image and whether the computational analysis image meets the requirements of sharpness.

If E is still dissatisfied, can carry out the above step of repetition (just reduce move forward and backward distance), till satisfaction.

Characteristics of the present invention are: overcome prior art and realized the defective of focusing automatically by moving lens, realize focusing by the pcb board of moving image transmitting sensor or mobile fixation of sensor, simultaneously need not change existing camera lens, its focal length is regulated in the realization robotization, makes its camera more flexible.

[description of drawings]

Fig. 1 utilizes focus the automatically structural representation of camera module of imageing sensor for the present invention;

Fig. 2 utilizes focus the automatically principle flow chart of camera system of imageing sensor for the present invention.

[embodiment]

Below in conjunction with accompanying drawing the utility model is further detailed the present invention and utilizes imageing sensor focus automatically principle, characteristics and the purpose of camera module and system.

Fig. 1 utilizes focus the automatically structural representation of camera module of imageing sensor for the present invention, and as shown in Figure 1, this module comprises:

---camera lens module 11, focusedimage;

---imageing sensor 12 changes into digital signal output with image;

---the main control chip plate is used for handling the part of image and images;

---controller 14, in order to moving of control chart image-position sensor, thereby it is poor to change its total optical path, and image information is focused on.

Fig. 2 utilizes moving of imageing sensor realize focusing the automatically principle flow chart of camera system for the present invention, and its step comprises:

The sensor assembly of A, camera is caught piece image in situ;

B, catch piece image forward;

C, catch piece image backward;

D, three width of cloth images are analyzed, how many distances this moves forward or backward to provide imageing sensor;

E, controller move on to the focusing position that generates with sensor assembly, catch image and computed image and whether meet the requirements of sharpness;

If F meets the requirements of sharpness, just stop to move.If do not reach the sharpness of requirement, also to retransmit out A and begin.

Characteristics of the present invention are: overcome prior art and realized the defective of focusing automatically by moving lens, realize focusing by the pcb board of moving image transmitting sensor or mobile fixation of sensor, need not change simultaneously the focus lens of prior art, its focal length is regulated in the realization robotization, makes its camera more flexible.

The above person only is most preferred embodiment of the present invention, is not to be used to limit the scope of the invention, and all equivalences of being done according to the present patent application claim change or modify, and are all the present invention and contain.

Claims (2)

1. utilize the imageing sensor camera module of focusing automatically, it is characterized in that: comprising:

One sensor assembly is by the mobile realization focusing of sensor assembly;

One controller, in order to moving of control chart image-position sensor, thereby it is poor to change its total optical path, and image information is focused on.

2. utilize the imageing sensor camera system of focusing automatically, its step comprises:

The sensor assembly of A, camera is respectively caught the different image information of three width of cloth three positions;

B, image information are transferred to computer (COMPUTER) or digital signal processor (DSP) by wired or wireless mode, after utilizing computer (COMPUTER) or digital signal processor (DSP) that the image of three width of cloth diverse locations is carried out operational analysis, estimate out the position of accurate focusing;

C, controller move on to the focusing position that generates with sensor assembly, catch image and computed image and whether meet the requirements of sharpness.

If D is still dissatisfied to the image that focuses on, can be forward and do minute movement backward and catch image information, image information captured is done operational analysis, provide the position that to focus, controller moves the position that generates with sensor assembly, catches image and whether the computational analysis image meets the requirements of sharpness.

If E is still dissatisfied, can carry out the above step of repetition (just reduce move forward and backward distance), till satisfaction.

Images