CN206818956U - Optical lens and monitoring system with temperature-compensating - Google Patents
Optical lens and monitoring system with temperature-compensating Download PDFInfo
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- CN206818956U CN206818956U CN201720322057.2U CN201720322057U CN206818956U CN 206818956 U CN206818956 U CN 206818956U CN 201720322057 U CN201720322057 U CN 201720322057U CN 206818956 U CN206818956 U CN 206818956U
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- adjusting mechanism
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Abstract
A kind of optical lens with temperature-compensating, including camera lens body, the camera lens body is provided with temperature sensor, control unit and focus adjusting mechanism, the temperature sensor is used for the temperature of detector lens body, and detected value is exported to described control unit with the signal form that can be transmitted, described control unit is used for according to the detected value compared with ideal temperature value, camera lens body is calculated along the required compensation rate in its axial direction, and the compensation rate is exported to the focus adjusting mechanism, the focus adjusting mechanism is used for the focal length for according to the compensation rate, adjusting the camera lens body；A kind of monitoring system with temperature-compensating, including the optical lens and video camera with temperature-compensating.The utility model provides a kind of optical lens and monitoring system with temperature compensation function.
Description
Technical field
The utility model belongs to lens technology field, is a kind of optical lens and prison with temperature-compensating specifically
Control system.
Background technology
Optical lens is part essential in NI Vision Builder for Automated Inspection, directly affects the quality of image quality.With existing
The development of generation technique, the technical merit of optical lens make great progress.The particularly raising of resolution ratio and focal length, makes optics
The image quality of camera lens has a rapid lifting, and application is more and more extensive.
Wherein, safety monitoring is a kind of important application field.Optical lens is applied to technical field of security and protection, complete to provide
The comprehensive security monitoring of weather, the person and property safety to people bring very big guarantee.
As the application of safety monitoring equipment is more and more wider, its application environment is increasingly complicated.In some bad environments
Occasion, under such as high and cold, extremely hot environment, existing optical lens by the great challenge of temperature, will cause that focusing is inaccurate, adjusts
The problems such as burnt inconvenient, it is greatly affected the definition of shooting picture, the normal use of serious threat safety monitoring equipment.
Utility model content
For overcome the deficiencies in the prior art, the utility model provides a kind of optical lens with temperature-compensating and monitoring
System, overcome influence of the environment temperature for precision of focusing.
The purpose of this utility model is achieved through the following technical solutions：
A kind of optical lens with temperature-compensating, including camera lens body, the camera lens body are provided with temperature sensor, control
Unit and focus adjusting mechanism processed：
The temperature sensor is used for the temperature of detector lens body, and detected value is exported with the signal form that can be transmitted
To described control unit；
Described control unit is used for according to the detected value compared with ideal temperature value, calculates camera lens body along its axial institute
The compensation rate needed, and the compensation rate is exported to the focus adjusting mechanism；
The focus adjusting mechanism is used for the focal length for according to the compensation rate, adjusting the camera lens body.
As the improvement of above-mentioned technical proposal, the focus adjusting mechanism includes focusing microscope group and drives the focusing microscope group with being used for
The straight-line motion mechanism moved along its axis.
As the further improvement of above-mentioned technical proposal, the straight-line motion mechanism is led including ball screw assembly, with straight line
Rail：
The ball screw assembly, includes ball-screw and the leading screw spiral shell that can be held on the ball-screw spiral rotating
It is female；
The feed screw nut is connected with the focusing microscope group, and the focusing microscope group is slidably held in the line slideway
On, the axial direction of the ball-screw is parallel with the line slideway.
As the further improvement of above-mentioned technical proposal, the shaft end of the ball-screw, which is provided with, to be used to drive the ball wire
The electric rotating machine of thick stick rotation.
As the further improvement of above-mentioned technical proposal, the electric rotating machine, which is provided with, to be used to detect the electric rotating machine
The encoder of angular displacement.
As the further improvement of above-mentioned technical proposal, the focus adjusting mechanism includes displacement transducer：
Institute's displacement sensors are used for the displacement for detecting the focus adjusting mechanism, and the displacement is delivered into the control
Unit processed；
Described control unit calculates the regulated quantity of the governor motion according to the displacement, and the regulated quantity is defeated
Go out to the focus adjusting mechanism；
The focus adjusting mechanism adjusts the focal length of the camera lens body according to the regulated quantity.
As the further improvement of above-mentioned technical proposal, the straight-line motion mechanism includes focusing drawtube with driving the tune
The drive mechanism of burnt lens barrel rotation：
The focusing drawtube can be held on camera lens body spiral rotating, and the focusing microscope group connects with the focusing drawtube
Connect.
As the further improvement of above-mentioned technical proposal, the drive mechanism includes motor, the motor
Output shaft is connected with the focusing drawtube.
As the further improvement of above-mentioned technical proposal, the motor, which is provided with, to be used to detect the motor
The encoder of angular displacement.
A kind of monitoring system with temperature-compensating, including the optical lens with temperature-compensating described in any of the above item is with taking the photograph
Shadow machine.
The beneficial effects of the utility model are：By setting temperature sensor, control unit and focusing on camera lens body
Mechanism, the temperature value of temperature sensor detector lens body, compensation rate of the control unit according to needed for calculating temperature value, focusing machine
Structure adjusts the focal length of camera lens body according to the compensation rate, so as to carry out temperature-compensating, improves the optics under temperature anomaly environment
The focusing precision of camera lens, and then by optical lens and set of cameras into monitoring system, there is provided one kind has temperature compensation function
Optical lens and monitoring system.
To enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Accompanying drawing appended by cooperation, is described in detail below.
Brief description of the drawings
, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation for the optical lens with temperature-compensating that the utility model embodiment 1 provides；
Fig. 2 is the first structure of the focus adjusting mechanism for the optical lens with temperature-compensating that the utility model embodiment 1 provides
Figure；
Fig. 3 is the second structure of the focus adjusting mechanism for the optical lens with temperature-compensating that the utility model embodiment 1 provides
Figure；
Fig. 4 is the composition structure chart for the monitoring system with temperature-compensating that the utility model embodiment 1 provides.
Main element symbol description：
Monitoring systems of the 1000- with temperature-compensating, optical lens of the 0100- with temperature-compensating, 0110- camera lens bodies,
0120- temperature sensors, 0130- control units, 0140- focus adjusting mechanisms, 0141- focusing microscope groups, 0142- straight-line motion mechanisms,
0142a- ball-screws, 0142b- feed screw nuts, 0142c- line slideways, 0142d- electric rotating machines, 0142e- focusing drawtubes,
0142f- drive mechanisms, 0200- video cameras.
Embodiment
For the ease of understanding the utility model, below with reference to relevant drawings to the optical lens with temperature-compensating and monitoring
System is described more fully.The optical lens with temperature-compensating and the preferred embodiment of monitoring system are given in accompanying drawing.
But the optical lens with temperature-compensating can be realized from monitoring system by many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is made to the optical lens with temperature-compensating and monitoring system
The disclosure of system more thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element be referred to as " directly existing " another element " on " when,
In the absence of intermediary element.Term as used herein " vertically ", " horizontal ", "left", "right" and similar statement are
For illustrative purposes.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model
The implication that the technical staff in domain is generally understood that is identical.Herein in the optical lens with temperature-compensating and the specification of monitoring system
Used in term be intended merely to describe specific embodiment purpose, it is not intended that limitation the utility model.Made herein
Term " and/or " include the arbitrary and all combinations of one or more related Listed Items.
Embodiment 1
Fig. 1, Fig. 2 and Fig. 3 are please referred to, the optical lens (hereinafter referred to as " optical lens ") 0100 with temperature-compensating wraps
Camera lens body 0110 is included, camera lens body 0110 is provided with temperature sensor 0120, control unit 0130 and focus adjusting mechanism 0140：
Temperature sensor 0120 is used for the temperature of detector lens body 0110, and by signal form of the detected value that can transmit
Export to control unit 0130；
Control unit 0130 is used for according to detected value compared with ideal temperature value, calculates camera lens body 0110 along its axial institute
The compensation rate needed, and the compensation rate is exported to focus adjusting mechanism 0140；
Focus adjusting mechanism 0140 is used for according to compensation rate, the focal length of regulation camera lens body 0110.
Specifically, camera lens body 0110 is provided with each microscope group and electromechanical component for being imaged, is optical lens 0100
Main base.Camera lens body 0110 simultaneously is used to be connected with video camera 0200, and light image is transferred in video camera 0200, formed
Required image.
So-called focal length, refers to from center of lens to egative film or the distance of the imaging plane such as imaging sensor, is to directly affect
The factor for precision of focusing.
Temperature sensor 0120 includes contact and contactless two major class, experiences the temperature of camera lens body 0110, for control
Unit 0130 processed carries out temperature-compensating and provides reference data.
So-called ideal temperature value, refer to the optimal temperature value section of the focusing of optical lens 0100 precision.When camera lens body
0110 temperature value deviates ideal temperature value, and the axial dimension of camera lens body 0110 changes due to expanding with heat and contract with cold, and causes reality
Focus offset predetermined focal distance.Focal length variations can cause focusing inaccurate, it is necessary to carry out temperature-compensating.It is burnt particularly under big focal length
Away from small variations for focus precision influence it is more notable.
Control unit 0130 compared with ideal temperature value, calculates according to the temperature value detected and deviates temperature value, Jin Erjie
The temperature variation curve of camera lens body 0110 is closed, calculates the actual change amount of camera lens body 0110, this is required compensation rate.
Focus adjusting mechanism 0140 is mainly used in focusing, and is main enforcement division.According to compensation rate, focus adjusting mechanism 0140 is adjusted
The distance between imaging plane such as center of lens and egative film/imaging sensor is saved, focal length is returned to perfect condition, realizes temperature
Compensate and ensure focusing precision.
Preferably, focus adjusting mechanism 0140 drives focusing microscope group 0141 to move along its axis including focusing microscope group 0141 with being used for
Straight-line motion mechanism 0142.
Specifically, focusing microscope group 0141 includes at least one lens for being used to focus.Focusing microscope group 0141 be in image it
Between, it can be moved along the axial direction (that is, input path) of camera lens body 0110, ensure that the picture of object is always positioned at bottom accordingly
At piece/imaging sensor.
When the temperature is changed, focusing microscope group 0141 and the distance of object change, and cause the picture of object from egative film/figure
As deviateing on the imaging planes such as sensor.Straight-line motion mechanism 0142 drives focusing microscope group 0141 to be axially moveable, its position
Shifting amount and compensation rate, so as to realize temperature-compensating, make the picture of object return on egative film/imaging sensor.
Preferably, straight-line motion mechanism 0142 includes ball screw assembly, and line slideway 0142c：
Ball screw assembly, includes ball-screw 0142a and the leading screw that can be held on ball-screw 0142a spiral rotating
Nut 0142b；
Feed screw nut 0142b is connected with focusing microscope group 0141, and focusing microscope group 0141 is slidably held in line slideway
On 0142c, ball-screw 0142a axial direction is parallel with line slideway 0142c.
Specifically, ball screw assembly, belongs to worm drive.Ball-screw 0142a on feed screw nut 0142b with being respectively equipped with
Raceway groove is rolled, for accommodating ball.Rolled by ball in rolling raceway groove, realize feed screw nut 0142b in ball-screw
Helical rotation on 0142a.
Focusing microscope group 0141 is connected on feed screw nut 0142b, and is slidably held on line slideway 0142c.
This, feed screw nut 0142b is in helical rotation on ball-screw 0142a, due to line slideway 0142c limitation, feed screw nut
0142b and focusing microscope group 0141 are in the linear movement for showing as focusing microscope group 0141 outside, so as to the slip for focusing microscope group 0141
Necessary power is provided.
Thus, the distance between imaging plane such as focusing microscope group 0141 and egative film/imaging sensor is with focusing microscope group 0141
Slip and change, be adjusted to exact focus position.
Preferably, focus adjusting mechanism 0140 includes displacement transducer：
Displacement transducer is used for the displacement for detecting focus adjusting mechanism 0140, and displacement is delivered into control unit 0130；
Control unit 0130 calculates the regulated quantity of governor motion according to displacement, and regulated quantity is exported to focus adjusting mechanism
0140；
Focus adjusting mechanism 0140 is according to regulated quantity, the focal length of regulation camera lens body 0110.
Specifically, displacement transducer has the function of detection displacement, including analog and digital two kinds.Common displacement
Sensor includes the type such as grating scale, magnetic railings ruler, strain-type, inductance type, grating scale therein because be easy to digitlization, precision height,
The features such as highly reliable and application is more extensive.
During focus adjusting mechanism 0140 is adjusted according to compensation rate, because mechanism inertia, focus adjusting mechanism 0140 are special
It is not the displacement of focusing microscope group 0141, it will usually deviation be present.Displacement transducer detects the actual displacement of focusing microscope group 0141
Amount, by it be available for transmission signal form.
By the detection signal of displacement transducer, control unit 0130 can obtain feedback regulation information, pass through focus adjusting mechanism
0140 is further focused, such as the displacement of focusing microscope group 0141 is further finely tuned, so that optical lens 0100
Focal length is more accurate.
Preferably, electric rotating machine 0142d is provided with the encoder for the angular displacement for being used to detect electric rotating machine 0142d.
Specifically, encoder be signal (such as bit stream) or data are worked out, be converted to can be used to communicate, transmit and
The equipment of the signal form of storage.Electric rotating machine 0142d angular displacement is converted to electric signal by encoder, and the electric signal is defeated
Go out to control unit 0130.
Control unit 0130 judges electric rotating machine 0142d current location according to the electric signal of acquisition, with reference to compensation rate with
Regulated quantity sends control instruction to focus adjusting mechanism 0140.
Focus adjusting mechanism 0140, it is exactly electric rotating machine 0142d, according to control instruction, rotating speed is adjusted in time, so as to essence
Predetermined angle really is turned over, is effectively prevented from hysterisis error, the tune of focus adjusting mechanism 0140 is further improved by feedback regulation
Precision is saved, makes focusing more accurate.
Preferably, in another embodiment, straight-line motion mechanism 0142 includes focusing drawtube 0142e and driving focusing lens
The drive mechanism 0142f of cylinder 0142e rotations：
Focusing drawtube 0142e can be held on camera lens body 0110 spiral rotating, focusing microscope group 0141 and focusing drawtube
0142e connections.
Specifically, focusing drawtube 0142e can rotate along helix.In a preferred embodiment, focusing drawtube 0142e
Helicla flute is provided with, corresponding helicla flute also is provided with camera lens body 0110.By threaded engagement, focusing drawtube 0142e can be with
Rotate and retreat along helicla flute.
Focusing microscope group 0141 is realized in camera lens sheet on focusing drawtube 0142e under focusing drawtube 0142e drive
The movement of the axial direction of body 0110.By the linear movement of focusing microscope group 0141, effective adjustment of focal length can be achieved.
Preferably, drive mechanism 0142f includes motor, and the output shaft of motor is connected with focusing drawtube 0142e.
Specifically, motor is used to drive focusing drawtube 0142e to rotate, and makes focusing drawtube 0142e can be in camera lens body
Spiral rotating on 0110.
Preferably, motor is provided with the encoder for the angular displacement for being used to detect motor.
Specifically, the angle that encoder collection motor turns over, and control unit 0130 is inputted in electrical signal form.Control
Unit 0130 processed calculates the actual displacement of motor and the deviation of predetermined displacement, sent out to motor according to the electric signal
Go out control signal.
Motor adjusts speed dynamic curve according to control signal, makes the rotating speed of motor more reasonable.Driving
Motor is able to accurately go to predetermined angle, will not occur to overshoot and cause hysterisis error, be effectively improved optical lens
0100 focusing precision.
Fig. 4 is please referred to, the monitoring system (hereinafter referred to as " monitoring system ") 1000 with temperature-compensating includes above institute
The optical lens 0100 stated and video camera 0200.
Specifically, optical lens 0100 is located at the front end of video camera 0200, and light path reaches photography through optical lens 0100
The imaging planes such as egative film/imaging sensor in machine 0200, and the erect image of object is obtained in video camera 0200, realize monitoring in real time
Recorded with shooting.
Because optical lens 0100 has temperature compensation function, monitoring system 1000 is more precisely focused, and makes prison
Control image quality is held in very high definition, and its application is also expanded to extreme environments such as high and cold, extremely hot, high temperature variations,
With wide purposes.
In all examples being illustrated and described herein, any occurrence should be construed as merely exemplary, without
It is that therefore, other examples of exemplary embodiment can have different values as limitation.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to the scope of the utility model.It should be pointed out that the ordinary skill for this area
For personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this
The protection domain of utility model.Therefore, the scope of protection of the utility model should be determined by the appended claims.
Claims (10)
1. a kind of optical lens with temperature-compensating, including camera lens body, it is characterised in that the camera lens body is provided with temperature
Sensor, control unit and focus adjusting mechanism：
The temperature sensor is used for the temperature of detector lens body, and detected value is exported to institute with the signal form that can be transmitted
State control unit；
Described control unit is used to according to the detected value compared with ideal temperature value, it is axially required along it to calculate camera lens body
Compensation rate, and the compensation rate is exported to the focus adjusting mechanism；
The focus adjusting mechanism is used for the focal length for according to the compensation rate, adjusting the camera lens body.
2. the optical lens according to claim 1 with temperature-compensating, it is characterised in that the focus adjusting mechanism includes focusing
Microscope group drives the straight-line motion mechanism that the focusing microscope group moves along its axis with being used for.
3. the optical lens according to claim 2 with temperature-compensating, it is characterised in that the straight-line motion mechanism includes
Ball screw assembly, and line slideway：
The ball screw assembly, includes ball-screw and the feed screw nut that can be held on the ball-screw spiral rotating；
The feed screw nut is connected with the focusing microscope group, and the focusing microscope group is slidably held on the line slideway,
The axial direction of the ball-screw is parallel with the line slideway.
4. the optical lens according to claim 3 with temperature-compensating, it is characterised in that the shaft end of the ball-screw is set
There is the electric rotating machine for driving the ball-screw rotation.
5. the optical lens according to claim 4 with temperature-compensating, it is characterised in that the electric rotating machine, which is provided with, to be used
In the encoder for the angular displacement for detecting the electric rotating machine.
6. the optical lens according to claim 2 with temperature-compensating, it is characterised in that the focus adjusting mechanism includes displacement
Sensor：
Institute's displacement sensors are used for the displacement for detecting the focus adjusting mechanism, and the displacement is delivered into the control list
Member；
Described control unit calculates the regulated quantity of the governor motion according to the displacement, and by the regulated quantity export to
The focus adjusting mechanism；
The focus adjusting mechanism adjusts the focal length of the camera lens body according to the regulated quantity.
7. the optical lens according to claim 2 with temperature-compensating, it is characterised in that the straight-line motion mechanism includes
Focusing drawtube and the drive mechanism for driving the focusing drawtube rotation, the focusing drawtube can be held in camera lens sheet spiral rotating
On body, the focusing microscope group is connected with the focusing drawtube.
8. the optical lens according to claim 7 with temperature-compensating, it is characterised in that the drive mechanism includes driving
Motor, the output shaft of the motor are connected with the focusing drawtube.
9. the optical lens according to claim 8 with temperature-compensating, it is characterised in that the motor, which is provided with, to be used
In the encoder for the angular displacement for detecting the motor.
10. a kind of monitoring system with temperature-compensating, it is characterised in that including the band temperature described in claim any one of 1-9
The optical lens and video camera of compensation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720322057.2U CN206818956U (en) | 2017-03-29 | 2017-03-29 | Optical lens and monitoring system with temperature-compensating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720322057.2U CN206818956U (en) | 2017-03-29 | 2017-03-29 | Optical lens and monitoring system with temperature-compensating |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109218624A (en) * | 2018-11-15 | 2019-01-15 | 中国科学院光电技术研究所 | A kind of temperature focusing compensation method of photoelectric follow-up |
| CN111323988A (en) * | 2018-12-17 | 2020-06-23 | 中国科学院长春光学精密机械与物理研究所 | Focusing control system, control method and optical measurement device |
| CN111722355A (en) * | 2019-03-19 | 2020-09-29 | 杭州海康微影传感科技有限公司 | Method and device for focusing thermal imaging lens based on temperature compensation |
| CN111800558A (en) * | 2019-04-09 | 2020-10-20 | 三赢科技（深圳）有限公司 | Camera system and image pickup method |
| CN114979440A (en) * | 2022-05-23 | 2022-08-30 | 广东亿嘉和科技有限公司 | High-precision optical navigation equipment and heat influence precision compensation method thereof |
| CN115061334A (en) * | 2022-05-19 | 2022-09-16 | 深圳市橙子数字科技有限公司 | Method, lens, system, computer device and medium for solving heat virtual focus |
-
2017
- 2017-03-29 CN CN201720322057.2U patent/CN206818956U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109218624A (en) * | 2018-11-15 | 2019-01-15 | 中国科学院光电技术研究所 | A kind of temperature focusing compensation method of photoelectric follow-up |
| CN111323988A (en) * | 2018-12-17 | 2020-06-23 | 中国科学院长春光学精密机械与物理研究所 | Focusing control system, control method and optical measurement device |
| CN111722355A (en) * | 2019-03-19 | 2020-09-29 | 杭州海康微影传感科技有限公司 | Method and device for focusing thermal imaging lens based on temperature compensation |
| CN111800558A (en) * | 2019-04-09 | 2020-10-20 | 三赢科技（深圳）有限公司 | Camera system and image pickup method |
| CN111800558B (en) * | 2019-04-09 | 2022-02-18 | 三赢科技（深圳）有限公司 | Camera system and image pickup method |
| CN115061334A (en) * | 2022-05-19 | 2022-09-16 | 深圳市橙子数字科技有限公司 | Method, lens, system, computer device and medium for solving heat virtual focus |
| CN114979440A (en) * | 2022-05-23 | 2022-08-30 | 广东亿嘉和科技有限公司 | High-precision optical navigation equipment and heat influence precision compensation method thereof |
| CN114979440B (en) * | 2022-05-23 | 2024-01-23 | 广东亿嘉和科技有限公司 | High-precision optical navigation equipment and thermal influence precision compensation method thereof |
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