CN111722526B - Multi-view-field switching calibration control method based on temperature compensation and computer readable storage medium - Google Patents
Multi-view-field switching calibration control method based on temperature compensation and computer readable storage medium Download PDFInfo
- Publication number
- CN111722526B CN111722526B CN202010589784.1A CN202010589784A CN111722526B CN 111722526 B CN111722526 B CN 111722526B CN 202010589784 A CN202010589784 A CN 202010589784A CN 111722526 B CN111722526 B CN 111722526B
- Authority
- CN
- China
- Prior art keywords
- temperature
- view
- lens
- field
- fitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
- G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P.I., P.I.D.
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/028—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Lens Barrels (AREA)
Abstract
The invention relates to a multi-view-field switching calibration control method based on temperature compensation and a computer readable storage medium, and belongs to the technical field of multi-view-field switching. The method mainly comprises the following steps: acquiring lens positions of the multi-view-field optical system when different view fields are clear under a plurality of discrete temperature points; performing mixed curve fitting based on the lens positions of the plurality of local temperature sections under the condition that different visual fields are clear at a plurality of discrete temperature points; calculating the positions of the lenses with clear different fields of view at any temperature point of a local temperature section by a linear interpolation technology among curves; the position of the lens when each visual field is clear is called based on the actual temperature, and the multi-visual field is quickly and accurately switched through a segmented PID algorithm; the calibration time of temperature compensation curves of batch products is greatly reduced by adding an offset adjustment algorithm to a common curve; for products which are easy to shake, the threshold algorithm is added to start or close the control module so as to reduce power consumption and keep the visual field clear and stable all the time.
Description
Technical Field
The invention belongs to the technical field of multi-view switching, and particularly relates to a multi-view switching calibration control method based on temperature compensation and a computer program product.
Background
The multi-view switching refers to a technology for achieving clear imaging under different views by adjusting the positions of the middle part optical lenses of the optical system. In infrared photoelectric imaging systems of hand-held, vehicle-mounted, ship-based and the like, switching of large and small view fields or switching of multiple view fields is required to meet different working requirements. In the process of focusing, the shapes of the optical lens, the mechanical structure and the like can be changed along with the change of temperature, the focal position is different under different temperature conditions, and meanwhile, the relationship between the focal position and the temperature shows different curve characteristics in different temperature sections. Thus, at different temperatures, the lens position also differs in the same field of view.
With the rapid development of panoramic imaging and infrared detection technologies, a multiband double-view-field high-resolution imaging optical system gradually replaces a single-band single-view-field low-resolution optical system, and becomes a hot spot of current military scientific and technical research.
The development of optical systems for rapidly detecting targets in real time and accurately tracking and measuring the targets is the mainstream trend at present.
Currently, the research in the field of multi-view switching from the application point of view is mainly as follows: (1) PID controls double-view field switching; (2) the double-view-field zoom optical system with a temperature compensation function; (3) an infrared three-field optical system; (4) a visual field switching means for switching between a plurality of visual fields quickly and with high accuracy.
However, the focus of these studies is often focused on two types of technologies: the first is optical system design, including optical parameters, materials, number of lenses, structure and even optical design with temperature compensation, etc. to achieve optimal imaging; the second is on a pure PID control algorithm to achieve fast field switching.
However, few researchers have studied the compensation for lens position in multiple fields of view; even if a small number of researchers adopt the measures of sectional temperature compensation, the temperature points capable of being collected are limited, so that virtual focus is easy to occur in the temperature interval which is not collected, and meanwhile, the research on how to optimize the sectional compensation to improve the calibration efficiency is less.
Disclosure of Invention
The invention aims to provide a multi-view-field switching control method with temperature compensation.
The technical scheme adopted by the invention is as follows:
a multi-view switching method based on temperature compensation comprises the following steps:
the method comprises the following steps: according to the number of lenses and the number of fields of view of the optical system, respectively collecting the position value of each lens when each field of view is clear under a plurality of discrete temperature points:
assuming that the optical system has M adjustable lenses, N fields of view that need to be switched, and P discrete temperature data are collected, the lens position at which different fields of view are clear at a plurality of discrete temperature points is denoted as PP, which is represented by the following formula:
PP＝[L 1 ，L 2 ，...L M ]
wherein L is i Representing the position parameter of the ith lens, f i (j, k) represents the position value of the kth field of view at the jth temperature point of the ith lens.
Step two: and (3) carrying out segmented (each segment is not less than two temperature points) curve fitting based on the positions of the lens when different fields of view are clear under a plurality of discrete temperature points:
if linear fitting is taken as an example, for a certain lens i and field of view k, T j 、T j+1 Two adjacent temperature points are reference points, and a position curve in the temperature section is fitted as follows:
therefore, one lens needs to fit a P-1 curve in a determined view field, and for an optical system with M adjustable lenses and N view fields, M.N- (P-1) curves need to be fitted;
if fitting as a quadratic function is taken as an example, for a certain lens i and field of view k, T j 、T j+1 、T j+2 Three adjacent temperature points are taken as reference points, and a position curve in the temperature section is fitted as follows:
therefore, one lens needs to fit a P-2 curve in a determined view field, and for an optical system with M adjustable lenses and N view fields, M.N- (P-2) curves need to be fitted;
further, a linear fitting and polynomial fitting mixed use method is provided based on the piecewise mixed curve fitting of the position sampling. The polynomial fitting is adopted for the temperature section with more sensitive temperature, and the linear fitting is adopted for the temperature section with less sensitive temperature, specifically:
in a certain view field k and a certain lens i, the whole temperature interval (P-1 temperature sections) needing calibration is divided into:
for a particular temperature interval j, if
A polynomial fit (preferably a linear fit) is used between the segments if &>
A linear fit is used.
Further, the system temperature is acquired in real time, the real-time temperature is respectively substituted into the fitting curves of the two adjacent temperature sections to obtain two groups of target position values, the distance value from the acquired temperature value to the two adjacent temperature sections is used as a specific gravity, and the linear interpolation of the two curves at the acquired temperature value is calculated to be used as a final lens target position value:
taking linear interpolation as an example, at T, for a given lens i and field of view k j 、T j+1 The resulting fitted dotted line between two adjacent temperature points is PC (T, i, j, k) at T j 、T j+1 The dotted line of the fitting obtained between two adjacent temperature points is PC (T, i, j +1,k), and the real-time temperature value T satisfies (T j+1 +T j )/2≤t≤(T j+2 +T j+1 ) And/2, the clear position value of the k field of view of the lens i at the temperature t is as follows:
step three: and taking the calculated position value as a lens position target, and realizing multi-view-field fast and stable switching at any temperature based on a segmented PID algorithm:
calculating a target position Pg (t, i, j, k) of the lens i based on the real-time temperature t and the view field k to be switched;
based on the lens target position Pg (t, i, j, k) and the current position P c And (t, i, j, k) performing segmented PID control to realize fast and stable switching, wherein the segmentation is as follows:
wherein, TH1 is a lens position allowable error range area limit value, TH2 is a PID algorithm control area limit value, and TH3 is a P algorithm control limit value. The segmentation control algorithm is different from the traditional PID control algorithm in that corresponding segmentation basis and control parameters are all control algorithms which need fast switching, do not oscillate in the switching process and accurately stop at a target position, fast and accurate are pursued, and steady-state balance control after the target is reached is not required.
For products which are easy to shake, the control module can be started or closed by increasing the threshold TH1 so as to reduce power consumption and keep the visual field clear and stable all the time; determining a PID control region by increasing a threshold TH2 to provide a PID control convergence speed; the determination of the pcontrol region by increasing the threshold TH3 achieves a smooth transition between full speed operation of the motor and the PID control region.
Step four: the common curve is obtained by analyzing the principal components of the curves of a plurality of products which are calibrated point by point:
PC pca (t,i,j,k)＝PCA(PC 1 (t,i,j,k)，PC 2 (t,i,j,k)，……)；
for a new product, the compensation curve only needs to be added with an offset on the common curve:
PC(t,i,j,k)＝PC pca (t,i,j,k)+Bias；
wherein the Bias is obtained by calibrating a temperature point, if the clear position at the temperature T is: PC (T, i, j, k), then the product's bias is:
Bias＝PC(T,i,j,k)-PC PCA (T,i,j,k)。
a temperature compensation based multi-view switching computer program product, said computer program product comprising a non-transitory readable storage medium and a computer program tangibly stored on said non-transitory readable storage medium, the computer program being executable by a processor in a computer to perform steps implementing the temperature compensation based multi-view switching calibration control method of the present invention.
The beneficial effects of the invention are:
1) The temperature compensation coefficient is obtained by a mixed fitting mode of linear fitting and polynomial fitting, so that the parfocalization of the full temperature (generally-40-70 ℃) is ensured, and the temperature points needing to be calibrated can be reduced as much as possible.
2) In the batch production process, the compensation curve in the full-temperature range can be obtained by calibrating only one temperature point by using the calibrated compensation curve of the product as a main component analysis and adding adjustment offset, so that the production time is greatly reduced, and the production efficiency is greatly improved.
3) The segmentation basis and the control parameters of the motor control algorithm are both directed at the control algorithm which needs to be switched quickly, has no oscillation and is stopped accurately at a target position, and fast and accurate control is pursued, but steady-state balance control after the target is reached is not required. The algorithm can complete the field switching in the fastest time.
Drawings
Fig. 1 is a flowchart of a multi-view switching calibration control method based on temperature compensation according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples.
It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. Those skilled in the art will recognize that the specific techniques or conditions, not specified in the examples, are according to the techniques or conditions described in the literature of the art or according to the product specification. The materials or equipment used are not indicated by manufacturers, and all are conventional products available by purchase.
For the purpose of illustration of specific implementation, it is assumed that the optical system has M =2 adjustable lenses, which can satisfy most of the multiple fields of view; n =3 fields of view that need to be switched; the data of P =11 discrete temperatures are collected, specifically-40 ℃, -30 ℃ and … ℃, and the working temperature range of most products can be covered.
The method comprises the following steps: according to the number of lenses and the number of fields of view of the optical system, respectively collecting the position value of each lens when each field of view is clear under a plurality of discrete temperature points:
the position of the lens at 11 discrete temperature points at which the different fields of view are clear is then denoted as PP, which is expressed by the following equation:
PP＝[L 1 ，L 1 ]
wherein L is i A position parameter representing the ith lens, f i (j, k) represents the position value of the kth field of view at the jth temperature point of the ith lens, T 1 、T 2 、…、T 11 Respectively, the temperature points are-40 ℃, 30 ℃ and … ℃.
Step two: and (3) carrying out segmented (each segment is not less than two temperature points) curve fitting based on the positions of the lens when different fields of view are clear under a plurality of discrete temperature points:
if fitting as a quadratic function is taken as an example, for a certain lens i and field of view k, T j 、T j+1 、T j+2 Three adjacent temperature points are taken as reference points, and a position curve in the temperature section is fit as follows:
therefore, a lens needs to fit P-2 curves in a determined view field, and for an optical system with M =2 adjustable lenses and N =3 view fields, M.N. (P-2) =54 curves need to be fitted;
further, the piecewise mixed curve fitting based on the position sampling adopts polynomial fitting according to the temperature section which is more sensitive to the temperature and adopts linear fitting to the temperature section which is less sensitive to the temperature, specifically:
in a certain view field k and a certain lens i, the whole temperature interval (P-1 temperature sections) needing calibration is divided into:
for a particular temperature interval j, if
A polynomial fit (preferably a linear fit) is applied between the segments and if £ is present>
A linear fit is used.
The results of various embodiments show that most infrared optical systems are sensitive to low temperature and less sensitive to high temperature. So polynomial fitting (preferably quadratic polynomial) is used in the low temperature section and linear fitting is used in the high temperature section.
Step three: the method comprises the following steps of collecting system temperature in real time, substituting the real-time temperature into two adjacent temperature section fitting curves respectively to obtain two groups of target position values, taking the distance value from a collected temperature value to two adjacent temperature sections as a specific gravity, and calculating the linear interpolation of the two curves at the collected temperature value as a final lens target position value:
taking linear interpolation as an example, at T, for a given lens i and field of view k j 、T j+1 、T j+2 The resulting fitted dotted line between three adjacent temperature points is PC (T, i, j, k) at T j+1 、T j+2 、T j+3 The fitting dotted line obtained between the three adjacent temperature points is PC (T, i, j, +1,k), and the real-time temperature value T meets T j+1 ≤t≤T j+2 Then the clear position value of the k-th visual field of the lens i at the temperature t is:
step four: and taking the position value calculated in the third step as a lens position target, and realizing multi-view-field fast and stable switching at any temperature based on a segmented PID algorithm:
calculating a target position Pg (t, i, j, k) of the lens i based on the real-time temperature t and the field of view k to be switched;
and performing segmented PID control based on the target position Pg (t, i, j, k) of the lens and the current position Pc (t, i, j, k) to realize fast and stable switching, wherein the segments are as follows:
wherein, TH1 is the limit value of the allowable error range area of the lens position, which can be determined according to the depth of field of the optical system; TH2 is 15-30 times of the position sampling maximum error of the PID algorithm control area limit value; TH3 is the P-algorithm control limit value, preferably 30-50 times the maximum error in position sampling. The segmentation control algorithm is different from the traditional PID control algorithm in that corresponding segmentation basis and control parameters are both directed at the control algorithm which needs to be switched quickly and stopped accurately at a target position, fast and accurate are pursued, and steady-state balance control after the target is reached is not required.
Step five: the common curve is obtained by analyzing the principal components of the curves of a plurality of products which are calibrated point by point:
PC pca (t,i,j,k)＝PCA(PC 1 (t,i,j,k)，PC 2 (t,i,j,k)，……)；
for a new product, the compensation curve only needs to be added with an offset on the common curve:
PC(t,i,j,k)＝PC pca (t,i,j,k)+Bias
wherein Bias is obtained by calibrating a temperature point, if the clear position at temperature T is: PC (T, i, j, k), then the product's bias is:
Bias＝PC(T,i,j,k)-PC PCA (T,i,j,k)。
in this embodiment, calibration is performed using 11 temperature points, and since the calibration time for each temperature point is 2 to 3 hours, all the calibration is performed in 22 to 33 hours. The calibration time is reduced to 2 to 3 hours by a method of adding bias to a common curve.
A computer program product for a temperature compensation based multi-view switching calibration control method, said computer program product comprising a non-transitory readable storage medium and a computer program, said computer program being tangibly stored on said non-transitory readable storage medium, the computer program being executed by a processor in a computer to perform the steps of the temperature compensation based multi-view switching calibration control method of an embodiment.
The technical effects of the embodiment are as follows:
1) The temperature compensation coefficient is obtained by a mixed fitting mode of linear fitting and polynomial fitting, thereby not only ensuring the non-defocusing of the full temperature (generally-40-70 ℃) but also reducing the temperature points needing to be calibrated as much as possible.
2) In the batch production process, the compensation curve in the full-temperature range can be obtained by calibrating only one temperature point by using the calibrated compensation curve of the product as a main component analysis and adding adjustment offset, so that the production time is greatly reduced, and the production efficiency is greatly improved. In this embodiment, calibration is performed using 11 temperature points, and since the calibration time for each temperature point is 2 to 3 hours, all the calibration is performed in 22 to 33 hours. The calibration time is reduced to 2-3 hours by a method of adding bias to a common curve, and the time is reduced to 9 percent of the original time.
3) The sectional basis and the control parameters of the motor control algorithm are both directed at the control algorithm which needs to be switched quickly and stopped accurately at a target position, and the pursuit is quick and accurate, but steady-state balance control after the target is reached is not required. The algorithm can complete the field switching in the fastest time. In the embodiment, the maximum stroke of the visual field switching is 150mm, the visual field switching time is controlled within 1s by the control algorithm of the invention, and no oscillation occurs in the switching process.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (11)
1. A multi-view field switching calibration control method based on temperature compensation is characterized by comprising the following steps:
the method comprises the following steps: respectively collecting the position value of each lens when each visual field is clear under a plurality of discrete temperature points according to the number of the lenses and the number of the visual fields of the optical system;
step two: performing piecewise curve fitting according to at least two temperature points in each segment based on the positions of the lens when different fields of view under a plurality of discrete temperature points are clear;
step three: acquiring system temperature in real time, respectively substituting the system temperature acquired in real time into fitting curves of two adjacent temperature sections to obtain two groups of target position values, wherein the curve fitting adopts a method of mixing linear fitting and polynomial fitting, the distance value between the acquired temperature value and the two adjacent temperature sections is used as the proportion, and the curve interpolation of the two curves at the acquired temperature value is calculated as the final lens target position value;
step four: the calculated position value is taken as a lens position target, and multi-view-field rapid and stable switching at any temperature is realized based on a segmented PID algorithm;
the method for mixed use of linear fitting and polynomial fitting comprises the following steps:
(1) In a certain determined view field k and a certain lens i, in P-1 temperature sections of the whole temperature interval needing to be calibrated, the clear position offset of the lens corresponding to each temperature section is as follows:
(2) For a particular temperature interval j, if
A polynomial fit is applied between the segments if>
Linear fitting is adopted;
(3) Acquiring the temperature of the system in real time, respectively substituting the real-time temperature into the fitting curves of two adjacent temperature sections to obtain two groups of target position values, taking the distance value between the acquired temperature value and the two adjacent temperature sections as the proportion, and calculating the linear interpolation of the two curves at the acquired temperature value as the final lens target position value;
the segmented PID algorithm is implemented by aiming at a target position Pg (t, i, j, k) of a lens and a current position P c (t, i, j, k) comparing to obtain the following segmented PID control algorithm:
wherein, TH1 is the lens position allowable error range zone limit value, TH2 is the PID algorithm control zone limit value, TH3 is the P algorithm control limit value.
2. The temperature compensation based multi-view switching calibration control method according to claim 1, characterized in that:
the position value of each lens at which each field of view is clear at the plurality of discrete temperature points in the first step is denoted as pp, which is expressed by the following formula:
PP＝[L 1 ，L 2 ，...L M ]
in the formula, the optical system is assumed to be provided with M adjustable lenses, N fields of view needing to be switched are provided, and P data of discrete temperature are collected; l is a radical of an alcohol i Representing the position parameter of the ith lens, f i (j, k) represents the position value of the kth field of view at the jth temperature point of the ith lens.
3. The temperature compensation based multi-view switching calibration control method according to claim 1, characterized in that:
the position value in the first step is acquired by adopting a locator/sliding rheostat/digital encoder mode, or position information is directly provided by other equipment.
4. The temperature compensation based multi-view switching calibration control method according to claim 1, characterized in that:
the piecewise curve fitting in the second step comprises linear fitting/quadratic function curve/multiple curve fitting/exponential curve fitting.
5. The temperature compensation based multi-view switching calibration control method according to claim 4, wherein the linear fit is:
for a given lens i and field of view k, at T j 、T j+1 Two adjacent temperature points are reference points, and a position curve in the temperature section is fitted to be:
a lens needs to be fitted with P-1 curves in a determined view field, and for an optical system with M adjustable lenses and N view fields, M.N. (P-1) curves need to be fitted.
6. The method of claim 4, wherein the quadratic function is fit to:
for a given lens i and field of view k, at T j 、T j+1 、T j+2 Three adjacent temperature points are taken as reference points, and a position curve in the temperature section is fitted to be:
a lens needs to be fitted with P-2 curves in a determined view field, and for an optical system with M adjustable lenses and N view fields, M.N. (P-2) curves need to be fitted.
7. The temperature compensation-based multi-view switching calibration control method according to claim 1, wherein the third step employs linear fitting as follows:
for a given lens i and field of view k, at T j 、T j+1 The resulting fitted dotted line between two adjacent temperature points is PC (T, i, j, k) at T j 、T j+1 Fitting obtained between two adjacent temperature pointsThe dotted line is PC (T, i, j +1,k), and the real-time temperature value T satisfies (T) j+1 +T j )/2≤t≤(T j+2 +T j+1 ) And/2, the clear position value of the k field of view of the lens i at the temperature t is as follows:
8. the method for controlling calibration based on temperature compensation and switching of multiple fields of view according to claim 4, wherein the fourth step further comprises:
the target position Pg (t, i, j, k) of the lens i is calculated based on the real-time temperature t and the field of view k to which switching is required.
9. The temperature compensation based multi-view switching calibration control method according to claim 1, characterized in that:
the control module is started or closed by increasing the threshold TH1 so as to reduce power consumption and keep the visual field clear and stable all the time; determining a PID control region by increasing a threshold TH2 to provide a PID control convergence speed; the determination of the pcontrol region by increasing the threshold TH3 achieves a smooth transition between full speed operation of the motor and the PID control region.
10. The temperature compensation based multi-view switching calibration control method according to any one of claims 1 to 9, further comprising the steps of:
the common curve is obtained by analyzing the principal components of the curves of a plurality of products which are calibrated point by point:
PC pca (t,i,j,k)＝PCA(PC 1 (t,i,j,k)，PC 2 (t,i,j,k)，……)
for a new product, the compensation curve only needs to be added with an offset on the common curve:
PC(t,i,j,k)＝PC pca (t,i,j,k)+Bias
wherein Bias is obtained by calibrating a temperature point, if the clear position at temperature T is:
PC (T, i, j, k), then the product's bias is:
Bias＝PC(T,i,j,k)-PC PCA (T,i,j,k)。
11. a computer-readable storage medium having stored thereon a computer program, characterized in that:
the computer program is executed by a processor in a computer to perform the steps of implementing the temperature compensation based multi-field-of-view switching calibration control method according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010589784.1A CN111722526B (en) | 2020-06-24 | 2020-06-24 | Multi-view-field switching calibration control method based on temperature compensation and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010589784.1A CN111722526B (en) | 2020-06-24 | 2020-06-24 | Multi-view-field switching calibration control method based on temperature compensation and computer readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111722526A CN111722526A (en) | 2020-09-29 |
| CN111722526B true CN111722526B (en) | 2023-04-18 |
Family
ID=72568738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010589784.1A Active CN111722526B (en) | 2020-06-24 | 2020-06-24 | Multi-view-field switching calibration control method based on temperature compensation and computer readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111722526B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115097590B (en) * | 2022-05-30 | 2024-02-02 | 昆明北方红外技术股份有限公司 | Infrared optical system zooming guide driving mechanism and control method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5260828A (en) * | 1992-03-27 | 1993-11-09 | Polaroid Corporation | Methods and means for reducing temperature-induced variations in lenses and lens devices |
| US5679946A (en) * | 1993-10-14 | 1997-10-21 | Minolta Co., Ltd. | Photo-taking lens temperature compensation system |
| CN102621669A (en) * | 2012-04-09 | 2012-08-01 | 中国电子科技集团公司第十一研究所 | Small-sized optical system for infrared medium wave detector |
| CN103389559A (en) * | 2013-08-01 | 2013-11-13 | 山东神戎电子股份有限公司 | Infrared camera lens based on temperature change compensation and compensation method |
| CN106568577A (en) * | 2016-10-18 | 2017-04-19 | 中国航空工业集团公司洛阳电光设备研究所 | Optical athermalization design detection system and detection method |
| RU2016102302A (en) * | 2016-01-25 | 2017-07-26 | Открытое Акционерное общество "Ростовский оптико-механический завод" | Temperature compensated infrared lens |
| CN109068073A (en) * | 2018-09-15 | 2018-12-21 | 昆明物理研究所 | A kind of thermal infrared imager autofocus system and method with temperature-compensating |
| CN110196491A (en) * | 2019-05-13 | 2019-09-03 | 云南师范大学 | A kind of modeling and simulating method that double-view field infrared imaging system defocuses |
-
2020
- 2020-06-24 CN CN202010589784.1A patent/CN111722526B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5260828A (en) * | 1992-03-27 | 1993-11-09 | Polaroid Corporation | Methods and means for reducing temperature-induced variations in lenses and lens devices |
| US5679946A (en) * | 1993-10-14 | 1997-10-21 | Minolta Co., Ltd. | Photo-taking lens temperature compensation system |
| CN102621669A (en) * | 2012-04-09 | 2012-08-01 | 中国电子科技集团公司第十一研究所 | Small-sized optical system for infrared medium wave detector |
| CN103389559A (en) * | 2013-08-01 | 2013-11-13 | 山东神戎电子股份有限公司 | Infrared camera lens based on temperature change compensation and compensation method |
| RU2016102302A (en) * | 2016-01-25 | 2017-07-26 | Открытое Акционерное общество "Ростовский оптико-механический завод" | Temperature compensated infrared lens |
| CN106568577A (en) * | 2016-10-18 | 2017-04-19 | 中国航空工业集团公司洛阳电光设备研究所 | Optical athermalization design detection system and detection method |
| CN109068073A (en) * | 2018-09-15 | 2018-12-21 | 昆明物理研究所 | A kind of thermal infrared imager autofocus system and method with temperature-compensating |
| CN110196491A (en) * | 2019-05-13 | 2019-09-03 | 云南师范大学 | A kind of modeling and simulating method that double-view field infrared imaging system defocuses |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111722526A (en) | 2020-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109068073B (en) | Thermal infrared imager automatic focusing system and method with temperature compensation | |
| CN103776831B (en) | A kind of micro-imaging detecting instrument and automatic focusing method thereof | |
| CN107835357B (en) | Auto focusing method, autofocus system and the camera including automatic focus module | |
| CN108156371B (en) | Infrared automatic focusing fast searching method | |
| CN104730677A (en) | Uncooled thermal infrared imager continuous zooming and fast automobile focusing circuit and method | |
| CN111932636B (en) | Calibration and image correction method and device for binocular camera, storage medium, terminal and intelligent equipment | |
| CN103616897B (en) | Double-view field thermal imaging system intelligent control system and method | |
| CN111722526B (en) | Multi-view-field switching calibration control method based on temperature compensation and computer readable storage medium | |
| CN109541788B (en) | Uncooled continuous zooming optical passive athermalization lens | |
| CN111077624A (en) | Automatic temperature compensation focusing control method for continuous zooming thermal infrared imager | |
| CN111650718A (en) | Infrared continuous zoom lens and definition compensation method thereof | |
| WO2016101092A1 (en) | Digital microscope and focusing method thereof | |
| CN104515599A (en) | FPGA-based infrared focal plane array blind pixel detection system and FPGA-based infrared focal plane array blind pixel detection method | |
| CN108169880A (en) | A kind of compact continuous vari-focus infrared optical system | |
| CN110793000A (en) | Intelligent focusing method for head shaking computer lamp based on machine vision | |
| CN105785561A (en) | Digital microscope and focusing method thereof | |
| CN109085201B (en) | Ultralow humidity dew point meter and temperature control method thereof | |
| CN110196491B (en) | Modeling simulation method for defocusing of double-view-field infrared imaging system | |
| CN113376784B (en) | Electromechanical active compensation method for full-temperature-section clear points of continuous zoom lens | |
| CN208366471U (en) | It is a kind of for automatically determining the device of the minimum discernable temperature difference of infrared thermoviewer | |
| CN104980661B (en) | A kind of method and apparatus of pick-up lens self-correcting | |
| KR101841200B1 (en) | Cooled thermal imaging camera mwir ×10 magnification continuous zoom opticals system | |
| CN112399171B (en) | TDICCD aerial camera focal plane detection method | |
| CN109391776B (en) | Focusing compensation control method for photoelectric pod continuous zooming infrared assembly | |
| Xiao et al. | Research on automatic focusing technique based on image autocollimation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |