CN104967775B - A kind of device and method of zoom lens imaging - Google Patents
A kind of device and method of zoom lens imaging Download PDFInfo
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- CN104967775B CN104967775B CN201510308643.7A CN201510308643A CN104967775B CN 104967775 B CN104967775 B CN 104967775B CN 201510308643 A CN201510308643 A CN 201510308643A CN 104967775 B CN104967775 B CN 104967775B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
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Abstract
The present invention relates to the device and method being imaged with zoom lens.The device includes at least two varifocal imaging units, and the burnt section of each varifocal imaging unit is incremented by successively, and the burnt section of two neighboring varifocal imaging unit partially overlaps；The channel to channel adapter being connected with varifocal imaging unit, for selecting the signal that at least one varifocal imaging unit is inputted as its output；The control unit communicated to connect respectively with varifocal imaging unit and channel to channel adapter；The focal length of varifocal imaging unit between any two between the burnt section and the burnt section of the varifocal imaging unit that control unit is used to control the varifocal imaging unit being currently imaged to be imaged with subsequent time overlaps successively, and also control passage selector switches to the varifocal imaging unit of subsequent time imaging as signal input part successively by the varifocal imaging unit being currently imaged as signal input part.The apparatus and method can reduce attenuation of a wide range of burnt section zoom lens to ambient light illumination.
Description
Technical field
The present invention relates to video imaging apparatus, more specifically to a kind of device and method of zoom lens imaging.
Background technology
The data analysis of public safety department shows, criminal offence generally occurs illumination is low, illumination condition is poor
Region.In terms of crime time, night crime is more than daytime, accounts for 79.1%.Therefore, in (the following letter of video image imaging device
Claim video camera) enter after security monitoring field, video camera disclosure satisfy that minimal illumination condition (the following letter of basic imaging indicators
Claim low-light (level) performance) just turn into the target that user seek assiduously.Meanwhile in order to improve the service efficiency of video camera, image function
The maximum magnitude (hereinafter referred to as coverage) from the near to the remote enough seen also turns into user's focus of attention.
The coverage of video camera is relevant with lens focus, when lens focus (the small f numbers of camera lens generally said) by it is short elongated when
(for example, changing to 80mm from 4mm), video camera it can be seen that scope become remote by near, coverage is increasing.Video camera is usual
Possesses larger coverage by configuring continuous magnification lens.
The coke ratio of the low-light (level) performance of video camera and camera lens (focal length clear aperature ratio, the big F numbers of camera lens generally said) and figure
As the performance of sensor is relevant.For the imaging sensor of particular characteristic, when camera lens coke ratio from F5.0 from large to small (for example, become
Change to F1.0) when, clear aperature is changed from small to big, and the low-light (level) performance of video camera is just become better and better.
In addition, the image processor that video camera is indispensable, the low-light (level) performance of video camera can be also improved to a certain extent.
Video camera with continuous magnification lens all includes a continuous magnification lens, an imaging sensor and one
Image-signal processor.
With the continuous progress of semiconductor technology, the performance of imaging sensor is constantly lifted, and can accomplish to make at present
When with F1.4 camera lens and coordinating image processor, (ambient light illumination can be pressed by blur-free imaging under 0.08lux low-light (level) environment
Grade scale, 0.01lux are moon lighting level).
But limited by lens design thought and technology condition, there is the video camera of continuous magnification lens
The existing performance of imaging sensor can not be presented completely.
Currently, the design philosophy of video image imaging device be provided with continuous magnification lens need to use it is whole
Focal range, for example, using the continuous magnification lens that a focal range is 4mm~132mm.In this case, camera lens
The ratio of long-focus and short focus is 132mm/4mm=33, can not be at focal length and short focus simultaneously with existing technology condition
Ensure that camera lens has same small coke ratio (e.g., F1.0), can only accomplish in change procedure of the lens focus from 4mm to 132mm, it is burnt
Than changing to F5.0 from F1.6.
Now, it is assumed that external environment condition illumination be 100%, then light-inletting quantity of the camera lens short focus 4mm at for 1/ (1.6*1.6)=
39%, light-inletting quantity is 1/ (3.6*3.6)=4% at focal length 132mm.This means in order to which allow can be in 0.08lux ambient light illuminations
The sensor of lower imaging is imaged at focal length, and ambient light illumination cannot be below 0.08Lux/4%=2lux.In other words, shone in environment
When degree 0.08lux, lens focus are located at 132mm, the illumination for being delivered to imaging sensor only has 0.08*4%=0.0032Lux,
Far below the minimum imaging illumination requirement of imaging sensor, cause any image all without seeing.
Calculated from the example above as can be seen that the big coke ratio at long-focus is quite notable to the attenuation of ambient lighting
, it is played with significantly influenceing the existing performance of sensor.This is directly resulted in the region that illumination is low, illumination condition is poor, video camera
Possibly any image can not be seen, lose the meaning of video frequency graphic monitoring.
In order to reduce this attenuation, the compensating mode being usually taken has following several：
1. carrying out light filling with visible or infrared light, ambient light illumination is improved；This method expose the position of video camera with
And direction of observation, scope so that the disguise of video camera is no longer present.The security monitoring of sensitizing range is set to lose original work
With.
2. using subversive sensor technology, for example, EMCCD, hundreds and thousands of times of ground improve the sensitivity of sensor, make
Camera lens is obtained to can be ignored the attenuation of ambient light illumination.But this mode causes the increasing of thousands of times of video camera cost
Add, considerably beyond existing process technical conditions under camera lens and video camera cost sum.It can not promote the use of a large area；
3. a pair existing sensor is persistently improved, the sensitivity of sensor is properly increased；This improved speed is slow,
Generally go through just has the lifting of two, three times for many years.
Above-mentioned various compensating modes, though respectively there is length, environment is not shone from the basic continuous magnification lens that solve
The attenuation problem of degree, the existing performance of imaging sensor are not still embodied completely at camera lens focal length.
The content of the invention
The technical problem to be solved in the present invention is, there is provided a kind of device and method of zoom lens imaging so that big
Reduce attenuation of the zoom lens to ambient light illumination under the zoom lens of scope Jiao's section.
The technical solution adopted for the present invention to solve the technical problems is：Construct a kind of device of zoom lens imaging, bag
Include,
At least two varifocal imaging units, the burnt section of each varifocal imaging unit is incremented by successively, and two neighboring institute
The burnt section for stating varifocal imaging unit partially overlaps；
The channel to channel adapter being connected with least two varifocal imagings unit, for select at least one zoom into
As the signal that unit is inputted is as its output；
The control unit communicated to connect respectively with the varifocal imaging unit and the channel to channel adapter；
Described control unit is used to control the varifocal imaging unit being currently imaged, the varifocal imaging list with subsequent time imaging
Member and positioned at the varifocal imaging unit being currently imaged and the subsequent time imaging varifocal imaging unit burnt section it
Between varifocal imaging unit focal length between any two overlap successively, also control the channel to channel adapter by the change being currently imaged
The varifocal imaging unit that burnt imaging unit switches to the subsequent time imaging as signal input part successively inputs as signal
End.
Preferably, the varifocal imaging unit includes zoom lens and imaging sensor,
The zoom lens, for obtaining the optical imagery of video/image, wherein, each varifocal imaging unit pair
The burnt section for the zoom lens answered is incremented by successively, and the burnt section of the two neighboring zoom lens partially overlaps；
Described image sensor, it is connected with the zoom lens, the light of the video/image for receiving the zoom lens
Study as and be converted to initial video/electric image signal output.
Preferably, the device of the zoom lens imaging also includes image processor,
Described image processor, it is connected with described image sensor and the channel to channel adapter, for receiving described image
Initial video/the electric image signal of sensor output is simultaneously converted into the video image for the video/image standard for meeting setting
Signal output；
Or described image processor, it is connected with the channel to channel adapter, for receiving from the channel to channel adapter
Initial video/the electric image signal and the video signal output for being converted into the video/image standard for meeting setting.
Preferably, the ratio range of the focal length of the zoom lens and short focus is 1-5.
Preferably, described control unit includes varifocal imaging control unit and channel to channel adapter control unit,
The varifocal imaging control unit, it is connected with the varifocal imaging unit and the channel to channel adapter control unit,
For controlling the varifocal imaging unit of the varifocal imaging unit being currently imaged and subsequent time imaging and positioned at institute
State the varifocal imaging between the burnt section of the varifocal imaging unit being currently imaged and the varifocal imaging unit of subsequent time imaging
The focal length of unit between any two overlaps successively, also output selection control signal to the channel to channel adapter control unit, with control
The channel to channel adapter control unit selection is cut successively by the varifocal imaging unit being currently imaged as signal input part
Shift to the varifocal imaging unit of the subsequent time imaging is used as signal input part；
The channel to channel adapter control unit, it is connected, uses with the varifocal imaging control unit and the channel to channel adapter
In receiving the selection control signal from the varifocal imaging control unit, to control the channel to channel adapter selection to be worked as by described
The varifocal imaging unit for switching to the subsequent time imaging successively as signal input part of the varifocal imaging unit of preceding imaging
Be used as signal input part.
Preferably, the coke ratio of the zoom lens is less than or equal to F2.8.
Preferably, the coke ratio of the zoom lens different in the device of zoom lens imaging is identical or not phase
Together.
The present invention also provides a kind of imaging method of zoom lens, comprises the steps：
A. judge that channel to channel adapter is selected as varifocal imaging unit and subsequent time current corresponding to signal input part
Whether the burnt section of the varifocal imaging unit of imaging has coincidence, if it is not, step B is then performed, if so, then performing step C；
B. adjustment has with the varifocal imaging unit Jiao's section being currently imaged overlaps and burnt section is located at the zoom being currently imaged
Imaging unit and the subsequent time imaging varifocal imaging unit between intermediate zoom imaging unit focal length, and it is described work as
The focal length of the varifocal imaging unit of preceding imaging so that the zoom of the intermediate zoom imaging unit and the current time imaging into
As the focal length coincidence of unit, while the channel to channel adapter is controlled to select the intermediate zoom imaging unit to be inputted as signal
End, returns to step A；
C. the focal length and the varifocal imaging list of subsequent time imaging of the varifocal imaging unit being currently imaged are adjusted
The focal length of member overlaps, and control unit control passage selector selects the conduct letter of the varifocal imaging unit of the subsequent time imaging
Number input.
Preferably, the imaging method of the zoom lens also comprises the steps：
The optical imagery of video/image is obtained by zoom lens；
Described image sensor obtains the optical imagery of the video/image, is converted to initial video/electric image signal,
And export to image processor；
Described image processor obtains the initial video/electric image signal and is converted into the video/image for meeting setting
The video signal output of standard.
Preferably, the ratio range of the focal length of the zoom lens and short focus is 1-5.
Implement the device and method of the zoom lens imaging of the present invention, have the advantages that：Using at least two with
On varifocal imaging unit carry out shooting video or image, the burnt section of varifocal imaging unit is incremented by successively, and two neighboring zoom
The burnt section of imaging unit partially overlaps, so as to ensure that the overall burnt segment limit of the device of zoom lens imaging is sufficiently large, and
The long-focus of each varifocal imaging unit and the ratio of short focus are smaller, can cause under prior art conditions each zoom into
As unit has small coke ratio, and then the decay of reduction ambient lighting.The control unit varifocal imaging unit that is currently imaged of control with
The varifocal imaging unit of subsequent time imaging and the zoom being imaged positioned at the varifocal imaging unit being currently imaged with subsequent time
The focal length of varifocal imaging unit between any two between the burnt section of imaging unit overlaps successively, and also control passage selector is by current
The varifocal imaging unit of imaging switches to the varifocal imaging unit of subsequent time imaging as signal input part as signal successively
Input, so that channel to channel adapter can switch between different varifocal imaging units, selected according to being actually needed
Varifocal imaging unit corresponding to focal length needed for selecting carries out shooting video or image output, so that not increasing zoom lens
Increase the burnt segment limit of varifocal imaging unit under attenuation, that is to say and reduce change under the varifocal imaging unit of a wide range of burnt section
Attenuation of the zoom lens to ambient light illumination.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the structural representation of the device first embodiment of zoom lens imaging of the present invention；
Fig. 2 is the structural representation of the device second embodiment of zoom lens imaging of the present invention.
Embodiment
The device of the zoom lens imaging of the present invention includes at least two varifocal imaging units, channel to channel adapter, control list
Member.
The burnt section of each varifocal imaging unit is incremented by successively, and the burnt section of two neighboring varifocal imaging unit has part weight
Close.
Channel to channel adapter is connected with least two varifocal imaging units, for selecting at least one varifocal imaging unit institute defeated
The signal entered exports as it.
Control unit communicates to connect with varifocal imaging unit and channel to channel adapter respectively.Control unit be used for control currently into
The varifocal imaging unit of picture, with subsequent time imaging varifocal imaging unit and positioned at the varifocal imaging unit being currently imaged
The focal length of varifocal imaging unit between any two between the burnt section of the varifocal imaging unit of subsequent time imaging overlaps successively, also
Control passage selector switches to subsequent time imaging as signal input part successively by the varifocal imaging unit being currently imaged
Varifocal imaging unit is as signal input part.
Varifocal imaging unit includes zoom lens and imaging sensor.Zoom lens is used for the optics for obtaining video/image
Imaging, wherein, the burnt section of zoom lens is incremented by successively corresponding to each varifocal imaging unit, and Jiao of two neighboring zoom lens
Section partially overlaps.Imaging sensor is connected with zoom lens, for receive zoom lens video/image optical imagery simultaneously
Be converted to initial video/electric image signal output.Wherein, the ratio range of the focal length of zoom lens and short focus is 1-5；Zoom
The coke ratio of camera lens is less than or equal to F2.8.The coke ratio of different zoom lens is identical in the device of zoom lens imaging or not phase
Together.
The device of zoom lens imaging also includes image processor.Image processor and imaging sensor and channel to channel adapter
Connection, initial video/electric image signal and being converted into for receiving imaging sensor output meet the video image mark of setting
Accurate video signal output.Or image processor is connected with channel to channel adapter, for receiving from channel to channel adapter
Initial video/electric image signal and the video signal output for being converted into the video image standard for meeting setting.
Control unit includes varifocal imaging control unit and channel to channel adapter control unit.Varifocal imaging control unit is with becoming
Burnt imaging unit connects with channel to channel adapter control unit, for control the varifocal imaging unit being currently imaged and subsequent time into
The varifocal imaging unit of picture and positioned at the varifocal imaging unit that is currently imaged and the varifocal imaging unit of subsequent time imaging
The focal length of varifocal imaging unit between any two between burnt section overlaps successively, also output selection control signal to channel to channel adapter control
Unit processed, using the selection of control passage selector control unit by the varifocal imaging unit that is currently imaged as signal input part according to
The secondary varifocal imaging unit for switching to subsequent time imaging is used as signal input part.
Channel to channel adapter control unit is connected with varifocal imaging control unit and channel to channel adapter, and zoom is come from for receiving
Be imaged the selection control signal of control unit, using the selection of control passage selector by the varifocal imaging unit that is currently imaged as
Signal input part switches to the conduct signal input part of the varifocal imaging unit of subsequent time imaging successively.
In the first embodiment of the device of the zoom lens imaging of the present invention, the device of zoom lens imaging is included at least
Two varifocal imaging units, varifocal imaging unit is 3 in the present embodiment, such as the first varifocal imaging unit 11, second becomes
The burnt varifocal imaging unit 13 of imaging unit 12 and the 3rd, the device of zoom lens imaging also includes channel to channel adapter 2 and control is single
Member 3.
The burnt section of first, second, and third varifocal imaging unit 11,12,13 the first zoom incremented by successively and adjacent into
As the burnt section of unit 11 and the second varifocal imaging unit 12 partially overlaps, and the second varifocal imaging unit 12 and the 3rd zoom into
As 13 burnt section of unit partially overlaps.First, second, and third varifocal imaging unit 11,12,13 corresponds to respectively includes first, the
2nd, the 3rd zoom lens 111,121,131, first, second, third imaging sensor 112,122,132, and first, second,
Three image processors 113,123,133.First zoom lens 111, the first imaging sensor 112 and the first image processor 113
It is sequentially connected, the second zoom lens 121, the second imaging sensor 122 and the second image processor 123 are sequentially connected, and the 3rd becomes
Zoom lens 131, the 3rd imaging sensor 132 and the 3rd image processor 133 are sequentially connected.
First, second, and third zoom lens 111,121,131 is used for the optical imagery for obtaining video/image, wherein, the
First, second and the 3rd zoom lens 111,121,131 burnt section is incremented by successively, and between first, second zoom lens 111,121
Burnt section partially overlap, and the burnt section between second, third zoom lens 121,131 partially overlaps.First, second and
The focal length of three zoom lens 111,121,131 and the ratio range of short focus are 1-5, and coke ratio is less than or equal to F2.8, first, the
Two is identical with the coke ratio of the 3rd zoom lens 111,121,131 or differ.
The burnt section of first zoom lens 111 is 4-15mm, and the burnt section of the second zoom lens 121 is 14mm-48mm, and the 3rd becomes
The burnt section of zoom lens 131 is 44mm-132mm.Here, the burnt section of zoom lens incrementally refers to the short focus and long-focus of burnt section
It is corresponding to be incremented by.
First, second, third imaging sensor 112,122,132 and corresponding first, second, third zoom lens 111,
121,131 connections, for obtaining the optical imagery of corresponding first, second, third zoom lens 111,121,131 and being converted to
Initial video/electric image signal output.
First, second, third image processor 113,123,133, passed for receiving corresponding first, second, third image
Initial video/electric image signal of the output of sensor 112,122,132 is simultaneously converted into the video for the video/image standard for meeting setting
Picture signal exports.
First, second, the corresponding in the varifocal imaging unit 11,12,13 of channel to channel adapter 2 and first, second, and third
Three image processors 113,123,133 connect, for selecting in first, second, third image processor 113,123,133 at least
One signal inputted exports as it, and according to being actually needed, channel to channel adapter 2 can simultaneous selection first, second, and third
Multiple in first, second, third image processor 113,123,133 corresponding in varifocal imaging unit 11,12,13 are inputted
Signal as its export.
Control unit 3 respectively with first, second, and third varifocal imaging unit 11,12,13 and the communication link of channel to channel adapter 2
Connect.Control unit 3 be used for control currently be imaged varifocal imaging unit, with subsequent time imaging varifocal imaging unit and
Varifocal imaging list between the burnt section of the varifocal imaging unit for varifocal imaging unit and the subsequent time imaging being currently imaged
The focal length of member between any two is overlapped successively, and also control passage selector is inputted by the varifocal imaging unit being currently imaged as signal
End switches to the varifocal imaging unit of subsequent time imaging as signal input part successively.
Control unit 3 includes varifocal imaging control unit 31 and channel to channel adapter control unit 32.
Connected in the varifocal imaging unit 11,12,13 of varifocal imaging control unit 31 and first, second, and third, and with leading to
Track selector control unit 32 connects, for the varifocal imaging for controlling the varifocal imaging unit being currently imaged to be imaged with subsequent time
Unit and the change between the burnt section of the varifocal imaging unit for varifocal imaging unit and the subsequent time imaging being currently imaged
The focal length of burnt imaging unit between any two overlaps successively, also output selection control signal to channel to channel adapter control unit 32, with
Control passage selector 2 selects to switch to subsequent time successively by the conduct signal input part for the varifocal imaging unit being currently imaged
The varifocal imaging unit of imaging is used as signal input part.
Channel to channel adapter control unit 32 is connected with varifocal imaging control unit 31 and channel to channel adapter 2, is come for receiving
From the selection control signal of varifocal imaging control unit 31, the varifocal imaging by being currently imaged is selected with control passage selector 2
The varifocal imaging unit for switching to subsequent time imaging successively as signal input part of unit is used as signal input part.
The workflow of the device of zoom lens imaging is as follows：
The device of current time zoom lens imaging needs to shoot video/image in the position of 4mm focal lengths, then varifocal imaging
Control unit 31 controls the first zoom lens 111 to carry out video/image optical imagery, and the first imaging sensor 112 obtains the light
Study as and be converted to initial video/electric image signal and export to the first image processor 113, the first image processor 113 and connect
Receive the initial video/electric image signal and be converted into the video signal output for the video/image standard for meeting setting.Passage
The control passage selector 2 of selector control unit 32 using the first image processor 113 in the first varifocal imaging unit 11 as
Signal input part, receive video signal and the output of the output of the first image processor 113.
If needing shooting video/image in the position of 30mm focal lengths in the device of subsequent time zoom lens imaging,
Varifocal imaging control unit 31 controls the first zoom lens 111 to zoom at corresponding long-focus 15mm, while controls the second zoom
Camera lens 121 is to zoom at short focus 14mm, when the focal length of the first zoom lens 111 and the second zoom lens 121 overlaps, passage
The control passage selector 2 of selector control unit 32 selects the second image processor 123 be used as signal input part, while control the
The position of Focussing to 30mm is carried out video/image optical imagery by two zoom lens 112, and the second imaging sensor 122 obtains
Take optical imagery and be converted to initial video/electric image signal and export to the second image processor 123, the second image processor
123 by receive the initial video/electric image signal and be converted into the video image standard for meeting setting video signal it is defeated
Go out, the selection of channel to channel adapter 2 receives the video signal of the second image processor 123 output.
If needing to shoot video/image in the position of 130mm focal lengths in the device of subsequent time zoom lens imaging, according to
After channel to channel adapter 2 is selected into the second image processor 123 as signal input part according to said process, varifocal imaging control unit
31 the second zoom lens 121 of control control the 3rd zoom lens 131 to short focus to zoom at corresponding long-focus 48mm
Zoom at 44mm, when the focal length of the second zoom lens 121 and the 3rd zoom lens 131 overlaps, channel to channel adapter control unit
32 control passage selectors 2 select the 3rd image processor 133 to be used as signal input part, while control the 3rd zoom lens 132
The position of Focussing to 130mm is subjected to video/image optical imagery, the 3rd imaging sensor 132 obtains the optical imagery
And be converted to initial video/electric image signal and export to the 3rd image processor 133, the 3rd image processor 133 will receive should
Initial video/electric image signal and the video/image signal output for being converted into the video image standard for meeting setting, channel selecting
The selection of device 2 receives the video signal of the 3rd image processor 133 output.
The above-mentioned operating mechanism for the device being imaged by above-mentioned zoom lens, for video image observer, it is seen that
Be continuous vari-focus video image output, its output video image is with being equipped with the device of single continuous magnification lens imaging not
Have any different.The burnt section configuration of each zoom lens in the present apparatus can realize optimal design under current technological conditions.
It is F1.0~F1.0 in the present embodiment, so as to which camera lens be minimized to the attenuation of illumination.It is short in this implementation example
Thang-kng amount at Jiao Chu and focal length can reach 1/ (1*1)=100%, be lost i.e. without any illumination.In such case
Under, the excellent low-light (level) performance that imaging sensor has had can be embodied completely.
Certainly, it is contemplated that the factor such as implementation cost, device volume, producer technical conditions itself, can also implement such as
The various flexible designs such as F1.0~F1.2, F1.2~F1.2, F1.0~F1.4.
In the device second embodiment of the zoom lens imaging of the invention shown in Fig. 2, with above-mentioned first embodiment
Difference is, first, second, and third image processor is not included in first, second, and third varifocal imaging unit 11,12,13
113,123,133, and the output end in channel to channel adapter 2 connects image processor 4.Channel to channel adapter 2 and first, second and
First, second, and third imaging sensor 112,122,132 connection in three varifocal imaging units, selects first, second and the
At least one in three imaging sensors 112,122,132 to be used as signal input part, channel to channel adapter 2, which receives, comes from first, second
It is converted into and regards to image processor 4 with initial video/electric image signal in the 3rd imaging sensor 112,122,132 and output
Frequency picture signal.
Certainly, according to the actual needs, the number of varifocal imaging unit can also be 2,4,5 ... ....
The present invention also provides a kind of imaging method of zoom lens, comprises the steps：
S1. judge that channel to channel adapter 2 is selected as varifocal imaging unit current corresponding to signal input part and lower a period of time
Whether the burnt section for being carved into the varifocal imaging unit of picture has coincidence, if it is not, step S2 is then performed, if so, then performing step S3.Example
Such as, be currently imaged for the first varifocal imaging unit 11, subsequent time imaging for the second varifocal imaging unit 12, then judge the
One varifocal imaging unit 11 overlaps with the burnt section of the second varifocal imaging unit 12, if subsequent time imaging for the 3rd zoom into
As unit 13, then judge that burnt section does not overlap between the first imaging unit 11 and the 3rd imaging unit 13.
S2. adjustment has with the varifocal imaging unit Jiao's section being currently imaged overlaps and burnt section is positioned at the varifocal imaging that is currently imaged
The focal length of intermediate zoom imaging unit between unit and the varifocal imaging unit of subsequent time imaging, and the zoom being currently imaged
The focal length of imaging unit so that the focal length for the varifocal imaging unit that intermediate zoom imaging unit is imaged with current time overlaps, together
When control channel to channel adapter select intermediate zoom imaging unit as signal input part, return to step S1.For example, first adjust first
The burnt section of varifocal imaging unit 11 overlaps with the burnt section of the second varifocal imaging unit 12, then control passage selector 2 is by selection the
One varifocal imaging unit 11 switches to the second varifocal imaging unit 12 of selection as signal input part and is used as signal input part, returns to
After step S1, judge that the burnt section of the second varifocal imaging unit 12 overlaps with the burnt section of the 3rd varifocal imaging unit 13, then perform
Step S3.
S3. the focal length of the focal length and the varifocal imaging unit of subsequent time imaging of the varifocal imaging unit being currently imaged is adjusted
Overlap, the varifocal imaging unit of control unit control passage selector selection subsequent time imaging is used as signal input part.If
Currently be imaged for the first varifocal imaging unit 11, subsequent time imaging for the second varifocal imaging unit 12, then control passage
Selector 2 is by selecting the first varifocal imaging unit 11 to switch to the selection conduct of the second varifocal imaging unit 12 as signal input part
Signal input part.If subsequent time imaging is become for the 3rd varifocal imaging unit 13, control passage selector 2 by selection second
Burnt imaging unit 12 switches to the 3rd varifocal imaging unit 13 of selection as signal input part and is used as signal input part.
The imaging method of zoom lens also comprises the steps：
First, the according to corresponding to passing through in first, second, third varifocal imaging unit 11,12,13 selection of required focal length
2nd, a zoom lens in the 3rd zoom lens 111,112,113 carries out video/image optical imagery.
Imaging sensor obtains the optical imagery and is converted to initial video/electric image signal and exports to corresponding image
Manage device.
Image processor obtains the initial video/electric image signal and is converted into regarding for the video image standard that meets setting
Frequency picture signal exports.
In another embodiment, optical imagery can be also obtained by imaging sensor and is converted to initial video/electric image signal
Output exports initial signal to image processor 4 to channel to channel adapter 2, then by channel to channel adapter 2, will by image processor 4
Initial video/electric image signal is converted into the video signal for the video image standard for meeting setting and output.
In summary, carry out shooting video or image, varifocal imaging list using at least two varifocal imaging unit
The burnt section of member is incremented by successively, and the burnt section of two neighboring varifocal imaging unit partially overlaps, so as to ensure that zoom lens into
The overall burnt segment limit of the device of picture is sufficiently large, and the long-focus of each varifocal imaging unit and the ratio of short focus are smaller,
It can cause each varifocal imaging unit that there is small coke ratio under the conditions of prior art, and then reduce the decay of ambient lighting.
The varifocal imaging unit that control unit control is currently imaged and varifocal imaging unit, the Yi Jiwei of subsequent time imaging
Varifocal imaging unit between the burnt section of the varifocal imaging unit for varifocal imaging unit and the subsequent time imaging being currently imaged
Focal length between any two overlaps successively, and the varifocal imaging unit that also control passage selector control unit is currently imaged is as signal
Input switches to the varifocal imaging unit of subsequent time imaging as signal input part successively, so that channel to channel adapter can
To be switched between different varifocal imaging units, the varifocal imaging unit corresponding to focal length according to needed for being actually needed selection
Exported again by channel to channel adapter after carrying out shooting video image so that increase in the case where not increasing the attenuation of zoom lens and become
The burnt segment limit of burnt imaging unit, it that is to say and reduce zoom lens under the varifocal imaging unit of a wide range of burnt section to ambient light illumination
Attenuation, and cause imaging sensor existing performance can be realized in each focal length of above-mentioned zoom lens.
It should be understood that above example only expresses the preferred embodiment of the present invention, it describes more specific and detailed
Carefully, but the limitation to the scope of the claims of the present invention therefore can not be interpreted as；It should be pointed out that the common skill for this area
For art personnel, without departing from the inventive concept of the premise, independent assortment can be carried out to above-mentioned technical characterstic, can also done
Go out several modifications and improvements, these belong to protection scope of the present invention；Therefore, it is all to be done with scope of the invention as claimed
Equivalents and modification, the covering scope of the claims in the present invention all should be belonged to.
Claims (10)
- A kind of 1. device of zoom lens imaging, it is characterised in that including,At least two varifocal imaging units, the burnt section of each varifocal imaging unit is incremented by successively, and the two neighboring change The burnt section of burnt imaging unit partially overlaps；The channel to channel adapter being connected with least two varifocal imagings unit, for selecting at least one varifocal imaging list The signal that member is inputted is as its output；The control unit communicated to connect respectively with the varifocal imaging unit and the channel to channel adapter；Described control unit be used for control currently be imaged varifocal imaging unit, with subsequent time imaging varifocal imaging unit, And between the burnt section for the varifocal imaging unit being imaged positioned at the varifocal imaging unit being currently imaged and the subsequent time Varifocal imaging unit focal length between any two overlap successively, also control the channel to channel adapter by the zoom being currently imaged Imaging unit switches to the varifocal imaging unit of the subsequent time imaging as signal input part as signal input part successively.
- 2. the device of zoom lens imaging according to claim 1, it is characterised in that the varifocal imaging unit includes becoming Zoom lens and imaging sensor,The zoom lens, for obtaining the optical imagery of video/image, wherein, corresponding to each varifocal imaging unit The burnt section of the zoom lens is incremented by successively, and the burnt section of the two neighboring zoom lens partially overlaps；Described image sensor, be connected with the zoom lens, for receive the zoom lens video/image optics into Picture is simultaneously converted to initial video/electric image signal output.
- 3. the device of zoom lens imaging according to claim 2, it is characterised in that the device of the zoom lens imaging Also include image processor,Described image processor, it is connected with described image sensor and the channel to channel adapter, for receiving described image sensing Initial video/the electric image signal of device output is simultaneously converted into the video/image signal for the video/image standard for meeting setting Output；Or described image processor, it is connected with the channel to channel adapter, for receiving from described in the channel to channel adapter Initial video/electric image signal and the video/image signal output for being converted into the video/image standard for meeting setting.
- 4. the device of the zoom lens imaging according to Claims 2 or 3, it is characterised in that the focal length of the zoom lens Ratio range with short focus is 1-5.
- 5. the device of zoom lens according to claim 4 imaging, it is characterised in that described control unit include zoom into Picture control unit and channel to channel adapter control unit,The varifocal imaging control unit, it is connected, is used for the varifocal imaging unit and the channel to channel adapter control unit Control the varifocal imaging unit and work as positioned at described that the varifocal imaging unit being currently imaged is imaged with the subsequent time Varifocal imaging unit between the burnt section of the varifocal imaging unit of preceding imaging and the varifocal imaging unit of subsequent time imaging Focal length between any two overlaps successively, and also output selection control signal is to the channel to channel adapter control unit, with described in control Channel to channel adapter control unit selects to be switched to successively as signal input part by the varifocal imaging unit being currently imaged The varifocal imaging unit of the subsequent time imaging is used as signal input part；The channel to channel adapter control unit, it is connected with the varifocal imaging control unit and the channel to channel adapter, for connecing Receive the selection control signal from the varifocal imaging control unit, with control channel to channel adapter selection by it is described currently into The work of the varifocal imaging unit for switching to the subsequent time imaging successively as signal input part of the varifocal imaging unit of picture For signal input part.
- 6. the device of zoom lens imaging according to claim 4, it is characterised in that the coke ratio of the zoom lens is less than Equal to F2.8.
- 7. the device of zoom lens imaging according to claim 4, it is characterised in that the device of the zoom lens imaging The coke ratio of the middle different zoom lens is identical or differs.
- A kind of 8. imaging method of zoom lens, it is characterised in that varifocal imaging unit includes zoom lens and imaging sensor, Comprise the steps：A. judge that channel to channel adapter is selected as varifocal imaging unit current corresponding to signal input part and is imaged with subsequent time The burnt section of varifocal imaging unit whether have coincidence, if it is not, step B is then performed, if so, then performing step C；B. adjustment has with the varifocal imaging unit Jiao's section being currently imaged overlaps and burnt section is located at the varifocal imaging being currently imaged Unit and the subsequent time imaging varifocal imaging unit between intermediate zoom imaging unit focal length, and it is described currently into The focal length of the varifocal imaging unit of picture so that the intermediate zoom imaging unit and the varifocal imaging list of current time imaging The focal length of member overlaps, while controls the channel to channel adapter to select the intermediate zoom imaging unit to be returned as signal input part To step A；C. the focal length and the varifocal imaging unit of subsequent time imaging of the varifocal imaging unit being currently imaged are adjusted Focal length overlaps, and control unit control passage selector selects the defeated as signal of the varifocal imaging unit of the subsequent time imaging Enter end.
- 9. the imaging method of zoom lens according to claim 8, it is characterised in that the imaging method of the zoom lens Also comprise the steps：The optical imagery of video/image is obtained by zoom lens；Described image sensor obtains the optical imagery of the video/image, is converted to initial video/electric image signal, and defeated Go out to image processor；Described image processor obtains the initial video/electric image signal and is converted into the video/image standard for meeting setting Video/image signal output.
- 10. the imaging method of zoom lens according to claim 9, it is characterised in that the focal length of the zoom lens with The ratio range of short focus is 1-5.
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| CN201510308643.7A CN104967775B (en) | 2015-06-05 | 2015-06-05 | A kind of device and method of zoom lens imaging |
| PCT/CN2016/084308 WO2016192627A1 (en) | 2015-06-05 | 2016-06-01 | Imaging device and method of zoom lens |
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| CN201510308643.7A CN104967775B (en) | 2015-06-05 | 2015-06-05 | A kind of device and method of zoom lens imaging |
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| CN104967775B (en) * | 2015-06-05 | 2017-12-01 | 深圳市星苑科技有限公司 | A kind of device and method of zoom lens imaging |
| CN107800951B (en) * | 2016-09-07 | 2020-07-14 | 深圳富泰宏精密工业有限公司 | Electronic device and lens switching method thereof |
| CN106791337B (en) * | 2017-02-22 | 2023-05-12 | 北京汉邦高科数字技术股份有限公司 | Zoom camera with double-lens optical multiple expansion and working method thereof |
| CN110740250B (en) * | 2018-07-19 | 2021-08-13 | 杭州海康威视数字技术股份有限公司 | Image acquisition method and image acquisition equipment |
| WO2020015754A1 (en) * | 2018-07-19 | 2020-01-23 | 杭州海康威视数字技术股份有限公司 | Image capture method and image capture device |
| CN110740249B (en) * | 2018-07-19 | 2021-07-02 | 杭州海康威视数字技术股份有限公司 | Image acquisition method and image acquisition equipment |
| CN111917941B (en) * | 2019-05-08 | 2021-10-01 | 杭州海康威视数字技术股份有限公司 | Camera picture processing method and camera |
| CN111131687B (en) * | 2018-10-31 | 2021-09-24 | 杭州海康威视数字技术股份有限公司 | Image output method and camera |
| CN111131662B (en) * | 2018-10-31 | 2021-09-24 | 杭州海康威视数字技术股份有限公司 | Image output method, image output apparatus, camera, and storage medium |
| CN111601026B (en) * | 2020-05-28 | 2021-12-07 | 维沃移动通信（杭州）有限公司 | Camera module and electronic equipment |
| CN111787224B (en) * | 2020-07-10 | 2022-07-12 | 深圳传音控股股份有限公司 | Image acquisition method, terminal device and computer-readable storage medium |
| CN218830168U (en) * | 2021-09-26 | 2023-04-07 | 深圳市道通智能航空技术股份有限公司 | Ultra-high definition multi-camera input switching device |
| CN113784052B (en) * | 2021-09-26 | 2023-09-15 | 深圳市道通智能航空技术股份有限公司 | Ultra-high definition multi-shot input switching device, method and system |
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| KR940005344Y1 (en) * | 1991-07-09 | 1994-08-10 | 삼성전자 주식회사 | Camcordor having function for around background search |
| JP2003037757A (en) * | 2001-07-25 | 2003-02-07 | Fuji Photo Film Co Ltd | Imaging unit |
| JP4198449B2 (en) * | 2002-02-22 | 2008-12-17 | 富士フイルム株式会社 | Digital camera |
| JP4112312B2 (en) * | 2002-08-22 | 2008-07-02 | 富士フイルム株式会社 | Digital camera with zoom function |
| US7561191B2 (en) * | 2005-02-18 | 2009-07-14 | Eastman Kodak Company | Camera phone using multiple lenses and image sensors to provide an extended zoom range |
| US7256944B2 (en) * | 2005-02-18 | 2007-08-14 | Eastman Kodak Company | Compact image capture assembly using multiple lenses and image sensors to provide an extended zoom range |
| JP4573725B2 (en) * | 2005-08-01 | 2010-11-04 | イーストマン コダック カンパニー | Imaging apparatus having a plurality of optical systems |
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| CN104967775B (en) * | 2015-06-05 | 2017-12-01 | 深圳市星苑科技有限公司 | A kind of device and method of zoom lens imaging |
| CN204721459U (en) * | 2015-06-05 | 2015-10-21 | 深圳市星苑科技有限公司 | A kind of device of zoom lens imaging |
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| CN104967775A (en) | 2015-10-07 |
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