CN105371960A - Circumferential scanning imaging control method and circumferential scanning imaging system - Google Patents
Circumferential scanning imaging control method and circumferential scanning imaging system Download PDFInfo
- Publication number
- CN105371960A CN105371960A CN201510888128.0A CN201510888128A CN105371960A CN 105371960 A CN105371960 A CN 105371960A CN 201510888128 A CN201510888128 A CN 201510888128A CN 105371960 A CN105371960 A CN 105371960A
- Authority
- CN
- China
- Prior art keywords
- lens
- optical system
- detector
- mirror
- pendulum mirror
- 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.)
- Pending
Links
Landscapes
- Studio Devices (AREA)
Abstract
The invention relates to a circumferential scanning imaging control method and a circumferential scanning imaging system. A circumferential scanning imaging system which the method is based on comprises an orientation scanning rotary table, and an infrared optical system, a detector and an orientation compensation oscillating mirror which are fixedly arranged on the orientation scanning rotary table, a view field offset generated every time when the orientation compensation oscillating mirror swings is used for compensating a view field angle corresponding to successive imaging, and when an imaging view field is fixed, a swinging angular speed needed by the orientation compensation oscillating mirror is alpha/T<INT>, wherein alpha is an angle which the oscillating mirror needs to swing for compensating the view field, and T<INT> is integration time of exposure of the detector, needing to be met when the orientation compensation oscillating mirror swings an angle of alpha. In circumferential scanning control, the swinging angular speed of the oscillating mirror has nothing to do with the rotating speed of the rotary table, and since the swinging angular speed of the oscillating mirror is not affected by the rotating speed of the rotary table, the control method is simple to control, is not prone to control errors and realizes non-trailing coupling.
Description
Technical field
The present invention relates to and a kind of sweep image formation control method week and week sweeps imaging system, the week belonging to infrared eye sweeps imaging field.
Background technology
The current overwhelming majority sweeps imaging system based on infrared alignment detector in infrared week, and it is very difficult that its sweep velocity changes in real time, and does not usually possess track-while-scan function.Recent year has carried out the research of sweeping imaging system infrared week based on planar array detector, shown by research, employing planar array detector comparatively detector array further increases signal noise ratio (snr) of image and observed range, and easily realize track-while-scan, but because detector week sweeps high-speed motion, cause target to trail, cause the pointing accuracy of target azimuth not high, and because image blurring, make to be difficult to observe environment.Therefore need badly to develop and sweep imaging system a kind of novel week to realize stronger detection performance and higher detection accuracy.
Summary of the invention
The object of this invention is to provide and a kind of sweep image formation control method week and week sweeps imaging system, the problem that the pointing accuracy in order to solve the target azimuth caused because detector week sweeps high-speed motion is not high.
For achieving the above object, the solution of the present invention comprises one and week sweeps image formation control method, the method based on imaging system of sweeping in week comprise an azimuth scan turntable and be installed in infrared optical system, detector and orientation compensated pendulum mirror on this azimuth scan turntable, each orientation compensated pendulum mirror swings the visual field offset of generation for compensating field angle corresponding to imaging successively, when imaging viewing field is fixed, needed for orientation compensated pendulum mirror, angle of oscillation speed is α/T
iNT, wherein, α puts the angle that mirror is the required swing in compensation visual field, T at every turn
iNTfor the integral time of the detector exposure that orientation compensated pendulum mirror pendulum angle α need meet.
One sweeps imaging system in week, described imaging system comprises an azimuth scan turntable and is installed in infrared optical system, detector and the orientation compensated pendulum mirror on this azimuth scan turntable, described infrared optical system comprises telephotolens group and is converged to picture group, described telephotolens group, orientation compensated pendulum mirror, be converged to and set gradually with optical axis from the object side to the image side as group and detector, from object space light successively by described telephotolens group, orientation compensated pendulum mirror, be converged to picture group, be finally imaged onto described detector;
Each orientation compensated pendulum mirror swings the visual field offset of generation for compensating field angle corresponding to imaging successively, and when imaging viewing field is fixed, needed for orientation compensated pendulum mirror, angle of oscillation speed is α/T
iNT, wherein, α puts the angle that mirror is the required swing in compensation visual field, T at every turn
iNTfor the integral time of the detector exposure that orientation compensated pendulum mirror pendulum angle α need meet; The turning axle of described orientation compensated pendulum mirror is vertical with its normal, and orientation compensated pendulum mirror swings with the direction contrary with described azimuth scan turntable, mutually compensates with turntable rotation direction.
Described imaging system also comprise one for revolving table position pulse signal is counted counter, for controlling to put the pendulum mirror control device and the detector image-forming device for being connected with detector that mirror swings, the described counter of described pendulum mirror control device sampling connection.
When described infrared optical system is under a visual field, when counter counts counts to the integral multiple of the counted number of pulses corresponding with this visual field or this counted number of pulses, pendulum mirror control device controls pendulum mirror to start to swing, detector image-forming device produces detector integrates signal simultaneously, meets pendulum mirror and swings within the integral time that detector exposes.
When described infrared optical system is under a visual field, when counter counts counts to the integral multiple of the counted number of pulses corresponding with this visual field or this counted number of pulses, pendulum mirror control device controls pendulum mirror to start to swing, a pendulum mirror linear zone commencing signal is produced afterwards when putting mirror and entering constant velocity linear district, detector image-forming device produces detector integrates signal according to described pendulum mirror linear zone commencing signal, meets pendulum mirror within the integral time that detector exposes to swing in linear zone.
At the end of the integral time of detector exposure, detector produces data valid signal and outside output image data, puts mirror simultaneously and is back to initial position.
Described telephotolens group comprises front fixed lens, zoom group and rear fixed mirror group, wherein, zoom group is made up of Large visual angle zoom group and middle visual field zoom group zoom group, described Large visual angle zoom group is made up of the second lens and the 5th lens, described middle visual field zoom group is made up of the 3rd lens and the 4th lens, sets gradually described second lens, the 3rd lens, the 4th lens and the 5th lens from the object side to the image side; When Large visual angle zoom group puts into described optical system and middle visual field zoom group cuts out from described optical system, this optical system is large visual field optical system; Central visual field zoom group puts into described optical system and Large visual angle zoom group cuts out from described optical system, and this optical system is middle visual field optical system; When Large visual angle zoom group and middle visual field zoom group all cut out from described optical system, this optical system is small field of view optical system;
The design objective of this optical system is: wavelength is 7.7 μm ~ 10.3 μm; Pixel dimension is: 20 μm × 24 μm; F# is 2; During focal length=500mm, field angle is 2.82 ° × 2.11 °; During focal length=300mm, field angle is 4.69 ° × 3.52 °; During focal length=100mm, field angle is 14.04 ° × 10.53 °.
Total focal power of described optical system meets following formula:
Wherein,
be i-th power of lens, h
ifor the height of incidence of paraxial rays on i-th lens,
for total focal power of system;
The total color difference coefficient of described optical system meets following formula:
Wherein: C
ibe the chromatic aberration coefficient of i-th lens, C
totalfor the total color difference coefficient of this optical system.
Described front fixed lens is the first lens, described rear fixed mirror group comprises the 6th lens that same optical axis sets gradually, catoptron, 7th lens, 8th lens and the 9th lens, described being converged to comprises as group the tenth lens that same optical axis sets gradually, 11 lens, 12 lens and the 13 lens, described first lens are positive power lens, second lens are negative-power lenses, 3rd lens are negative-power lenses, 4th lens are positive power lens, 5th lens are positive power lens, 6th lens are negative-power lenses, 7th lens are negative-power lenses, 8th lens are negative-power lenses, 9th lens are positive power lens, tenth lens are positive power lens, 11 lens are negative-power lenses, 12 lens are positive power lens, 13 lens are positive power lens.
The surface of the close image space in described second lens is aspheric surface, the surface of the close image space in the 5th lens is aspheric surface, two surfaces in 7th lens are aspheric surface, two surfaces of the 9th lens are aspheric surface, the surface of the close object space in the tenth lens is aspheric surface, the surface of the close image space in the 11 lens is aspheric surface, and the surface of the close object space in the 13 lens is aspheric surface.
An orientation compensated pendulum mirror is embedded in infrared optical system, to ensure the motion of being offset external scene opposing detector when turntable week sweeps by the swing of putting mirror, namely ensure that the scenery that detector is seen in each integration period is constant, streaking phenomenon when would not occur that week sweeps like this when turntable week sweeps.And the successful Application of this imaging system can make large array surface array detector sweep imaging system for infrared week becomes possibility, simultaneously optical system also can realize large visual field, imaging clearly and 360 ° seamless spliced.
In addition, angle of oscillation speed needed for orientation compensated pendulum mirror is α/T
iNT, wherein, α puts the angle that mirror is the required swing in compensation visual field, T at every turn
iNTfor the integral time of the detector exposure that orientation compensated pendulum mirror pendulum angle α need meet, sweeping in week in control, the angle of oscillation speed of pendulum mirror and the rotating speed of turntable have nothing to do, rotating speed regardless of turntable is how many, does not all have influence on the angle of oscillation speed of pendulum mirror, so, this control method controls simple, and, not easily there is departure, realize without hangover coupling.
Accompanying drawing explanation
Fig. 1 sweeps imaging system structural representation week;
Fig. 2 is the block diagram of system sweeping imaging system week;
Fig. 3 is detector image-forming circuit composition frame chart;
Fig. 4 is the artwork between each lens of infrared optical system and pendulum mirror;
Fig. 5 is seamless spliced imaging effect figure;
Fig. 6 is detector image-forming circuit logic sequential chart.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Week as shown in Figure 1 sweeps imaging system, comprises an azimuth scan turntable, and this azimuth scan turntable is installed with infrared optical system, detector and orientation compensated pendulum mirror.Wherein, infrared optical system comprises telephotolens group and is converged to picture group, telephotolens group, orientation compensated pendulum mirror, be converged to and set gradually with optical axis from the object side to the image side as group and detector, from object space light successively by telephotolens group, orientation compensated pendulum mirror, be converged to picture group, be finally imaged onto on the focal plane on detector.
Azimuth scan turntable adopts two-axle rotating table, constant level can be realized sweep in week and upper and lower pitch regulation, the equipment such as infrared optical system, detector and orientation compensated pendulum mirror are consistent with turntable platform when mounted, after such turntable rotates, 360 ° are imaged on a surface level, if the equipment such as infrared optical system, detector and orientation compensated pendulum mirror exist pitch angle with turntable platform, appearance is tilted by imaging, cannot realize seamless spliced.The luffing angle of turntable, by determining the luffing angle of final imaging, realizes differing heights Scenery Imaging.
Orientation compensated pendulum mirror is a plane mirror in essence, and its turning axle is vertical with the normal of plane mirror, and orientation compensated pendulum mirror swings with the direction contrary with azimuth scan turntable, mutually compensates with turntable rotation direction.Under week sweeping state, gated sweep pendulum mirror speeds match turntable speed, realizes the geo-stationary of imaging viewing field, reaches the object of optical compensation.
In addition, the axis of orientation compensated pendulum mirror connects pendulum mirror motor, and pendulum mirror motor controls the swing of pendulum mirror self, realizes the skew of visual field.Optical compensation pendulum mirror motor adopts high-speed, high precision pendulum mirror motor conventional in linear array type detector mechanical-optical setup, sawtooth wave drives, and when controlling pendulum mirror, only adopts the direction that pendulum mirror swings, mutually compensate with turntable rotation direction, not imaging on another direction that pendulum mirror swings.This imaging system also comprises a pendulum mirror control device, this pendulum mirror control device control linkage pendulum mirror motor, for controlling the rotation of putting mirror motor.Can control by serial ports start and stop and the slew rate of putting mirror, convenient coupling turntable rotating speed, significantly reduces and limits the control of turntable rotating speed.
Seamless spliced in order to realize preferably, the detector in this imaging system adopts 640 × 512 medium wave planar array detectors.Planar array detector belongs to third generation infrared eye, and its sensing circuit integration degree is high, and single exposure just can realize the imaging of a frame picture, can realize position exposure mode easily.
As shown in Figure 2, the equipment such as imaging system also comprises an indication control board and detector image-forming circuit, indication control board control linkage turntable, under send control command and receive digital video, it is equivalent to a background control system.Detector image-forming circuit is based on the architecture design of FPGA+DSP, FPGA mainly completes the function such as detector configuration and drive singal generation, imaging logic sequential control, nonuniformity correction, DDE image enhancement processing algorithm, storer control, display and control, the generation of revolving table position exposure signal in real time, and DSP mainly completes the functions such as serial communication, nonuniformity correction coefficient calculations, greyscale transformation.Imaging circuit composition frame chart as shown in Figure 3.
As shown in Figure 4, telephotolens group comprises front fixed lens, zoom group and rear fixed mirror group, and zoom group is made up of Large visual angle zoom group and middle visual field zoom group zoom group.Wherein, Large visual angle zoom group is made up of lens 2 and lens 5, and middle visual field zoom group is made up of lens 3 and lens 4, lens 2, lens 3, lens 4 and lens 5 put in order for: be followed successively by lens 2, lens 3, lens 4 and lens 5 from the object side to the image side.
Three visual fields are realized: Large visual angle by dropping into and cut out corresponding zoom group, switching between middle visual field and small field of view, be specially: when Large visual angle zoom group puts into this optical system, and middle visual field zoom group cuts out from optical system, namely the object space light that produces propagates into follow-up rear fixed mirror group through lens 2 and lens 5 and is converged to picture group, until arrival detector, and lens 3 and lens 4 do not contribute for the imaging of this optical system, lens 3 and lens 4 are equivalent to get rid of outside this optical system, now this optical system is large visual field optical system, in like manner, central visual field zoom group puts into optical system and Large visual angle zoom group cuts out from optical system, and this optical system is middle visual field optical system.In addition, when Large visual angle zoom group and middle visual field zoom group all cut out from optical system, when namely lens 2, lens 3, lens 4 and lens 5 are all got rid of outside this optical system, this optical system is small field of view optical system.Drop into by above-mentioned two zoom groups and cut out this optical system, the switching of three visual fields can be realized.
The input of mirror group and the conventional method cut out have two kinds: use motor or manually carry out dropping into and cutting out, when using motor to operate, motor belt motor index glass group is carried out motion and is realized dropping into and cutting out, such as: by motor, the rotation of mirror group is dropped into or cuts out system, carry out motion due to motor belt motor index glass group and belong to routine techniques, do not repeat here; Use when manually operating, only need as required mirror group manually be dropped into from system and cut out.
The design objective of this infrared optical system is: wavelength is 7.7 μm ~ 10.3 μm; Pixel dimension is: 20 μm × 24 μm; F# is 2; During focal length=500mm, field angle is 2.82 ° × 2.11 °; During focal length=300mm, field angle is 4.69 ° × 3.52 °; During focal length=100mm, field angle is 14.04 ° × 10.53 °.
Each power of lens in this optical system distributes the requirement of the total focal power of demand fulfillment, and total focal power of this optical system meets following formula:
Wherein,
be i-th power of lens, h
ifor the height of incidence of paraxial rays on i-th lens,
for total focal power of system.
The total color difference coefficient also following formula of demand fulfillment of this optical system:
Wherein: C
ibe the chromatic aberration coefficient of i-th lens, C
totalfor the total color difference coefficient of this optical system.
The focal power distribution condition of system can be obtained, the further optimal design of recycling CODEV software by solving above-mentioned equation.By the principle of Step wise approximation, under the condition controlling aberration, thermal imagery constraint, discharge the optimized variable of each lens, introduce aspheric surface simultaneously, analysis and optimization intermediate structure repeatedly, directly obtains gratifying, to meet design objective and performance requirement optical system.
Front fixed lens is lens 1, and rear fixed mirror group comprises lens 6, lens 8, lens 9 and the lens 10 that same optical axis sets gradually, and is converged to and comprises as group lens 12, lens 13, lens 14 and the lens 15 that same optical axis sets gradually; Orientation compensated pendulum mirror is catoptron 11, and the light that lens 10 penetrate is injected in lens 12 after catoptron 11 reflects.Wherein, lens 1 are positive power lens, and lens 2 are negative-power lenses, lens 3 are negative-power lenses, and lens 4 are positive power lens, and lens 5 are positive power lens, lens 6 are negative-power lenses, lens 8 are negative-power lenses, and lens 9 are negative-power lenses, and lens 10 are positive power lens, lens 12 are positive power lens, lens 13 are negative-power lenses, and lens 14 are positive power lens, and lens 15 are positive power lens.
The surface of the close image space in lens 2 is aspheric surface, the surface of the close image space in lens 5 is aspheric surface, two surfaces in lens 8 are aspheric surface, two surfaces of lens 10 are aspheric surface, the surface of the close object space in lens 12 is aspheric surface, the surface of the close image space in lens 13 is aspheric surface, and the surface of the close object space in lens 15 is aspheric surface.
The material of lens 1, lens 2, lens 3, lens 4, lens 5, lens 8, lens 10, lens 12, lens 13, lens 14 and lens 15 is germanium, and the material of lens 6 and lens 9 is zinc selenide.
In addition, in order to shorten the overall axial length of this optical system, be provided with catoptron 7 between lens 6 and lens 8, the light that lens 6 penetrate is injected in lens 8 after catoptron 7 reflects.
Table 1 is the parameter of this optical system each ingredient under small field of view, table 2 is the parameter of lens 2 and lens 5, table 3 is the parameter of lens 3 and lens 4, and wherein, the content of table 1 adds that the content of table 2 forms the parameter of this optical system each ingredient under middle visual field; The content of table 1 adds that the content of table 3 forms the parameter of this optical system each ingredient under Large visual angle.
Table 1
Table 2
Table 3
For realizing sweeping imaging clearly week without hangover, need to ensure at the uniform velocity to turn over during 360 ° at turntable, each pendulum mirror swings the visual field offset produced just can compensate field angle corresponding to a thermal imaging system imaging, when imaging viewing field is fixed, can show that each pendulum mirror is for compensating the angle [alpha] swung needed for visual field by optical computing, and pendulum angle α required time need meet T integral time of detector exposure
iNT, thus determine pendulum mirror compensation visual field needed for angle of oscillation speed be α/T
iNT.Can be found out by this formula, for realizing without hangover coupling, the control of pendulum mirror speed has nothing to do with turntable rotating speed, wherein detector integrates time T
iNTadjustable, pendulum angle α is then determined by thermal imaging system instantaneous field of view angle size, these variablees change often according to imaging demand, and due to optical parallax in practical application, the calculated value referential of pendulum mirror angle of oscillation speed is lower, therefore, the angle of oscillation speed of pendulum mirror is regulated by serial ports, parameter multilevel is adjustable, and accurate calibration pendulum pitch-angle speed on the basis of theory calculate, to be embodied as picture without the unambiguous coupling of hangover.
In order to detect in real time the position pulse signal of turntable, also arrange a counter for counting revolving table position pulse signal in this imaging system, the sampling of pendulum mirror control device connects this counter.
In week inswept journey, turntable sends position pulse signal and zero cross signal to imaging circuit, sweep a circle turntable week and can produce 450000 position pulse signals and 1 turntable zero cross signal, 360 ° of corresponding visual field, in order to realize sweeping the seamless spliced of state hypograph week, needs calculate the exposure position required for corresponding visual field respectively according to visual field size, the field angle of infrared optical system is γ, sweeping a circle week can complete imaging number of times be 360 °/γ, imaging system provided by the invention calculates the turntable counted number of pulses N under different visual field by this principle, within the time that turntable turns over N number of pulse, detector completes single exposure imaging, put mirror to swing to compensate visual field simultaneously, thus ensure between twice imaging seamless spliced, if the value of N is less than normal, turntable not yet turns over enough angles and namely completes imaging, adjacent inter frame image there will be repetition, if the value of N is excessive, turntable turns over that angle is excessive exceedes field angle, and adjacent inter frame image there will be disappearance.The realization of P-pulse makes turntable rotating speed irrelevant with imaging coupling, when turntable week the speed of sweeping fix, its position pulse signal frequency is fixed, when rotating speed week the speed of sweeping accelerate, the corresponding increase of position pulse signal frequency, requires higher to the sample rate of FPGA.
Counter is adopted to count revolving table position pulse signal, after receiving turntable zero cross signal, counter resets, according to exposure position counted number of pulses N1 under the different visual fields calculated (counted number of pulses corresponding under Large visual angle) and N2 (counted number of pulses corresponding under small field of view), for counted number of pulses N1, when counter counts counts to the integral multiple of N1 and N1, just produce the pendulum mirror starting impulse signal begin under a respective field of vision, after pendulum mirror control device receives this enabling signal begin, produce pendulum mirror drive singal, control pendulum mirror to start to swing, pendulum mirror linear zone commencing signal start is produced afterwards after pendulum mirror enters constant velocity linear district, after processing logic in imaging circuit receives this start signal, produce detector integrates signal INT, T integral time that the integrated signal INT produced and above-mentioned detector expose
iNTcorresponding.Can ensure that putting mirror in the time that detector exposes is in linear zone by this control mode, angular velocity is even, image stabilization.
At the end of integrated signal, namely during detector end exposure or detector exposure T integral time
iNTat the end of, detector will produce data valid signal datavalid, and outside output image data.Now put mirror after swinging to extreme angles, enter backhaul auto-returned starting position, wait for the begin signal that imaging circuit provides again, the linear zone that will ensure to put mirror swing in the design of pendulum mirror will cover the maximum field of view of optical system completely, system regulates the speed of pendulum mirror by serial ports, ensures the clear without hangover of image.
Due to the existence of system optics error, in actual applications, counted number of pulses N1 and N2 is accurate calculated value not, and along with converging the change of focal length, the value of N1 and N2 also needs to carry out suitable adjustment, N1 and N2 is set to the configurable variable of serial ports in logical design, what just can be shown by indication control board in reality debugging like this sweeps picture in week, check between two two field pictures it is there occurs overlap or disappearance, revise N1 and N2 value according to image, final realization sweeps the seamless spliced of image in week.Sweep the seamless spliced of image week and greatly reduce the complexity needing processing overlapping image when target detects, and image zero lap makes to sweep image week without disappearance and is also highly suitable for human visual system.Be illustrated in figure 5 seamless spliced imaging effect figure.
Because imaging and turntable rotating speed have nothing to do, system can regulate the rotating speed of turntable easily according to practical application request, such design greatly facilitates the operation of user, many visual fields and integral time adjustable, user's application demand in several cases can be met.When system is proceeded to tracking mode by the week state of sweeping or is stared observation state, pendulum mirror just locks onto zero-bit, pendulum mirror is now only a catoptron in optical system, detector image-forming circuit switches to inter-sync mode of operation, its duty and turntable no longer include correlativity, realize the tenacious tracking to target and observation.Sweep imaging circuit logical sequence week as shown in Figure 6.
In above-described embodiment, after pendulum mirror enters constant velocity linear district, produce pendulum mirror linear zone commencing signal, after the processing logic in imaging circuit receives this signal, produce detector integrates signal.Be in linear zone and can ensure all even image stabilization of angular velocity, this is a kind of embodiment of optimization, as other embodiment, after pendulum mirror control device receives enabling signal begin, produce pendulum mirror drive singal, control pendulum mirror and start to swing, imaging circuit produces detector integrates signal simultaneously.
Be presented above concrete embodiment, but the present invention is not limited to described embodiment.Basic ideas of the present invention are above-mentioned basic scheme, and for those of ordinary skill in the art, according to instruction of the present invention, designing the model of various distortion, formula, parameter does not need to spend creative work.The change carried out embodiment without departing from the principles and spirit of the present invention, amendment, replacement and modification still fall within the scope of protection of the present invention.
Claims (10)
1. week sweep image formation control method for one kind, the method based on imaging system of sweeping in week comprise an azimuth scan turntable and be installed in infrared optical system, detector and orientation compensated pendulum mirror on this azimuth scan turntable, it is characterized in that, each orientation compensated pendulum mirror swings the visual field offset of generation for compensating field angle corresponding to imaging successively, when imaging viewing field is fixed, needed for orientation compensated pendulum mirror, angle of oscillation speed is α/T
iNT, wherein, α puts the angle that mirror is the required swing in compensation visual field, T at every turn
iNTfor the integral time of the detector exposure that orientation compensated pendulum mirror pendulum angle α need meet.
2. week sweep imaging system for one kind, it is characterized in that, described imaging system comprises an azimuth scan turntable and is installed in infrared optical system, detector and the orientation compensated pendulum mirror on this azimuth scan turntable, described infrared optical system comprises telephotolens group and is converged to picture group, described telephotolens group, orientation compensated pendulum mirror, be converged to and set gradually with optical axis from the object side to the image side as group and detector, from object space light successively by described telephotolens group, orientation compensated pendulum mirror, be converged to picture group, be finally imaged onto described detector;
Each orientation compensated pendulum mirror swings the visual field offset of generation for compensating field angle corresponding to imaging successively, and when imaging viewing field is fixed, needed for orientation compensated pendulum mirror, angle of oscillation speed is α/T
iNT, wherein, α puts the angle that mirror is the required swing in compensation visual field, T at every turn
iNTfor the integral time of the detector exposure that orientation compensated pendulum mirror pendulum angle α need meet; The turning axle of described orientation compensated pendulum mirror is vertical with its normal, and orientation compensated pendulum mirror swings with the direction contrary with described azimuth scan turntable, mutually compensates with turntable rotation direction.
3. week according to claim 2 sweeps imaging system, it is characterized in that, described imaging system also comprise one for revolving table position pulse signal is counted counter, for controlling to put the pendulum mirror control device and the detector image-forming device for being connected with detector that mirror swings, the described counter of described pendulum mirror control device sampling connection.
4. week according to claim 3 sweeps imaging system, it is characterized in that, when described infrared optical system is under a visual field, when counter counts counts to the integral multiple of the counted number of pulses corresponding with this visual field or this counted number of pulses, pendulum mirror control device controls pendulum mirror to start to swing, detector image-forming device produces detector integrates signal simultaneously, meets pendulum mirror and swings within the integral time that detector exposes.
5. week according to claim 3 sweeps imaging system, it is characterized in that, when described infrared optical system is under a visual field, when counter counts counts to the integral multiple of the counted number of pulses corresponding with this visual field or this counted number of pulses, pendulum mirror control device controls pendulum mirror to start to swing, a pendulum mirror linear zone commencing signal is produced afterwards when putting mirror and entering constant velocity linear district, detector image-forming device produces detector integrates signal according to described pendulum mirror linear zone commencing signal, meets pendulum mirror within the integral time that detector exposes to swing in linear zone.
6. the week according to claim 4 or 5 sweeps imaging system, it is characterized in that, at the end of the integral time of detector exposure, detector produces data valid signal and outside output image data, puts mirror simultaneously and is back to initial position.
7. week according to claim 2 sweeps imaging system, it is characterized in that, described telephotolens group comprises front fixed lens, zoom group and rear fixed mirror group, wherein, zoom group is made up of Large visual angle zoom group and middle visual field zoom group zoom group, described Large visual angle zoom group is made up of the second lens and the 5th lens, and described middle visual field zoom group is made up of the 3rd lens and the 4th lens, sets gradually described second lens, the 3rd lens, the 4th lens and the 5th lens from the object side to the image side; When Large visual angle zoom group puts into described optical system and middle visual field zoom group cuts out from described optical system, this optical system is large visual field optical system; Central visual field zoom group puts into described optical system and Large visual angle zoom group cuts out from described optical system, and this optical system is middle visual field optical system; When Large visual angle zoom group and middle visual field zoom group all cut out from described optical system, this optical system is small field of view optical system;
The design objective of this optical system is: wavelength is 7.7 μm ~ 10.3 μm; Pixel dimension is: 20 μm × 24 μm; F# is 2; During focal length=500mm, field angle is 2.82 ° × 2.11 °; During focal length=300mm, field angle is 4.69 ° × 3.52 °; During focal length=100mm, field angle is 14.04 ° × 10.53 °.
8. week according to claim 7 sweeps imaging system, it is characterized in that, total focal power of described optical system meets following formula:
Wherein,
be i-th power of lens, h
ifor the height of incidence of paraxial rays on i-th lens,
for total focal power of system;
The total color difference coefficient of described optical system meets following formula:
Wherein: C
ibe the chromatic aberration coefficient of i-th lens, C
totalfor the total color difference coefficient of this optical system.
9. week according to claim 8 sweeps imaging system, it is characterized in that, described front fixed lens is the first lens, described rear fixed mirror group comprises the 6th lens that same optical axis sets gradually, catoptron, 7th lens, 8th lens and the 9th lens, described being converged to comprises as group the tenth lens that same optical axis sets gradually, 11 lens, 12 lens and the 13 lens, described first lens are positive power lens, second lens are negative-power lenses, 3rd lens are negative-power lenses, 4th lens are positive power lens, 5th lens are positive power lens, 6th lens are negative-power lenses, 7th lens are negative-power lenses, 8th lens are negative-power lenses, 9th lens are positive power lens, tenth lens are positive power lens, 11 lens are negative-power lenses, 12 lens are positive power lens, 13 lens are positive power lens.
10. week according to claim 9 sweeps imaging system, it is characterized in that, the surface of the close image space in described second lens is aspheric surface, the surface of the close image space in the 5th lens is aspheric surface, two surfaces in 7th lens are aspheric surface, and two surfaces of the 9th lens are aspheric surface, and the surface of the close object space in the tenth lens is aspheric surface, the surface of the close image space in the 11 lens is aspheric surface, and the surface of the close object space in the 13 lens is aspheric surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510888128.0A CN105371960A (en) | 2015-12-05 | 2015-12-05 | Circumferential scanning imaging control method and circumferential scanning imaging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510888128.0A CN105371960A (en) | 2015-12-05 | 2015-12-05 | Circumferential scanning imaging control method and circumferential scanning imaging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105371960A true CN105371960A (en) | 2016-03-02 |
Family
ID=55374360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510888128.0A Pending CN105371960A (en) | 2015-12-05 | 2015-12-05 | Circumferential scanning imaging control method and circumferential scanning imaging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105371960A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596420A (en) * | 2017-01-19 | 2017-04-26 | 中国科学院上海技术物理研究所 | Super-width high-resolution imaging system and imaging method |
| CN106843303A (en) * | 2016-12-09 | 2017-06-13 | 河南中光学集团有限公司 | The automatic control system and its control method of self adaptation camera lens visual field turntable speed |
| CN108181093A (en) * | 2018-02-12 | 2018-06-19 | 中国科学院西安光学精密机械研究所 | High-speed swing mirror performance index detection device and method |
| CN109752840A (en) * | 2019-03-21 | 2019-05-14 | 西安佐威光电科技有限公司 | A kind of long wave refrigeration mode panorama scanning lens |
| CN109827661A (en) * | 2018-12-19 | 2019-05-31 | 北京遥感设备研究所 | A kind of infrared sensitivity test method for staring compensated scanning system |
| CN109839731A (en) * | 2017-11-28 | 2019-06-04 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of continuous vari-focus small field of view high speed panorama infrared optical system |
| CN110515061A (en) * | 2019-09-12 | 2019-11-29 | 北京富吉瑞光电科技有限公司 | A kind of dual sensor object space compensation method and system |
| CN110677594A (en) * | 2019-10-11 | 2020-01-10 | 北京富吉瑞光电科技有限公司 | Compensation imaging method and device of photoelectric panoramic imaging system |
| CN111562021A (en) * | 2020-05-22 | 2020-08-21 | 中国科学院上海技术物理研究所 | Thermal infrared imaging system is swept to light small-size airborne large visual field area array pendulum |
| CN111896935A (en) * | 2020-08-05 | 2020-11-06 | 西安应用光学研究所 | Reverse scanning stability compensation method adopting staring type detector photoelectric search system |
| CN112505916A (en) * | 2020-10-30 | 2021-03-16 | 哈尔滨新光光电科技股份有限公司 | Image space scanning optical system based on curved surface prism |
| CN113281887A (en) * | 2021-07-20 | 2021-08-20 | 西安微普光电技术有限公司 | Searching and tracking integrated infrared zoom lens and imaging method |
| CN113703140A (en) * | 2021-08-27 | 2021-11-26 | 西安中科立德红外科技有限公司 | Large-area-array compact medium-wave infrared circumferential scanning optical device and system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007144290A1 (en) * | 2006-06-16 | 2007-12-21 | Thales | Passive three-field optronic system |
| CN102506612A (en) * | 2011-10-13 | 2012-06-20 | 哈尔滨工业大学 | Phase step type scanning imaging method for miniaturization optical imaging guidance system |
| CN103760668A (en) * | 2014-02-21 | 2014-04-30 | 哈尔滨工业大学 | Large-diameter long-focus continuous scanning imaging optical system |
| CN104297899A (en) * | 2013-11-29 | 2015-01-21 | 中国航空工业集团公司洛阳电光设备研究所 | Large-view-field passive athermalization shortwave infrared optical system |
| CN104297908A (en) * | 2013-11-28 | 2015-01-21 | 中国航空工业集团公司洛阳电光设备研究所 | Medium-wave/long-wave double-color multi-field optical system |
| CN104539829A (en) * | 2014-12-09 | 2015-04-22 | 中国科学院上海技术物理研究所 | Optical-mechanical structure based on infrared area array detector scanning imaging |
-
2015
- 2015-12-05 CN CN201510888128.0A patent/CN105371960A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007144290A1 (en) * | 2006-06-16 | 2007-12-21 | Thales | Passive three-field optronic system |
| CN102506612A (en) * | 2011-10-13 | 2012-06-20 | 哈尔滨工业大学 | Phase step type scanning imaging method for miniaturization optical imaging guidance system |
| CN104297908A (en) * | 2013-11-28 | 2015-01-21 | 中国航空工业集团公司洛阳电光设备研究所 | Medium-wave/long-wave double-color multi-field optical system |
| CN104297899A (en) * | 2013-11-29 | 2015-01-21 | 中国航空工业集团公司洛阳电光设备研究所 | Large-view-field passive athermalization shortwave infrared optical system |
| CN103760668A (en) * | 2014-02-21 | 2014-04-30 | 哈尔滨工业大学 | Large-diameter long-focus continuous scanning imaging optical system |
| CN104539829A (en) * | 2014-12-09 | 2015-04-22 | 中国科学院上海技术物理研究所 | Optical-mechanical structure based on infrared area array detector scanning imaging |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106843303A (en) * | 2016-12-09 | 2017-06-13 | 河南中光学集团有限公司 | The automatic control system and its control method of self adaptation camera lens visual field turntable speed |
| CN106843303B (en) * | 2016-12-09 | 2023-05-23 | 河南中光学集团有限公司 | Automatic control system and control method for speed of self-adaptive lens view field turntable |
| CN106596420A (en) * | 2017-01-19 | 2017-04-26 | 中国科学院上海技术物理研究所 | Super-width high-resolution imaging system and imaging method |
| CN106596420B (en) * | 2017-01-19 | 2023-07-04 | 中国科学院上海技术物理研究所 | Ultra-large-breadth high-resolution imaging system and imaging method |
| CN109839731A (en) * | 2017-11-28 | 2019-06-04 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of continuous vari-focus small field of view high speed panorama infrared optical system |
| CN109839731B (en) * | 2017-11-28 | 2023-09-08 | 中国航空工业集团公司洛阳电光设备研究所 | Continuous zooming small-view-field high-speed peripheral infrared optical system |
| CN108181093A (en) * | 2018-02-12 | 2018-06-19 | 中国科学院西安光学精密机械研究所 | High-speed swing mirror performance index detection device and method |
| CN109827661A (en) * | 2018-12-19 | 2019-05-31 | 北京遥感设备研究所 | A kind of infrared sensitivity test method for staring compensated scanning system |
| CN109752840A (en) * | 2019-03-21 | 2019-05-14 | 西安佐威光电科技有限公司 | A kind of long wave refrigeration mode panorama scanning lens |
| CN109752840B (en) * | 2019-03-21 | 2024-01-09 | 西安佐威光电科技有限公司 | Long wave refrigeration type periscope scanning lens |
| CN110515061A (en) * | 2019-09-12 | 2019-11-29 | 北京富吉瑞光电科技有限公司 | A kind of dual sensor object space compensation method and system |
| CN110515061B (en) * | 2019-09-12 | 2020-08-25 | 北京富吉瑞光电科技有限公司 | Dual-sensor object space compensation method and system |
| CN110677594A (en) * | 2019-10-11 | 2020-01-10 | 北京富吉瑞光电科技有限公司 | Compensation imaging method and device of photoelectric panoramic imaging system |
| CN110677594B (en) * | 2019-10-11 | 2020-08-25 | 北京富吉瑞光电科技有限公司 | Compensation imaging method and device of photoelectric panoramic imaging system |
| CN111562021A (en) * | 2020-05-22 | 2020-08-21 | 中国科学院上海技术物理研究所 | Thermal infrared imaging system is swept to light small-size airborne large visual field area array pendulum |
| CN111896935A (en) * | 2020-08-05 | 2020-11-06 | 西安应用光学研究所 | Reverse scanning stability compensation method adopting staring type detector photoelectric search system |
| CN111896935B (en) * | 2020-08-05 | 2024-03-15 | 西安应用光学研究所 | Reverse scanning stability compensation method adopting gaze type detector photoelectric search system |
| CN112505916A (en) * | 2020-10-30 | 2021-03-16 | 哈尔滨新光光电科技股份有限公司 | Image space scanning optical system based on curved surface prism |
| CN113281887A (en) * | 2021-07-20 | 2021-08-20 | 西安微普光电技术有限公司 | Searching and tracking integrated infrared zoom lens and imaging method |
| CN113703140B (en) * | 2021-08-27 | 2023-07-25 | 西安中科立德红外科技有限公司 | Large-area-array compact medium-wave infrared peripheral scanning optical device and system |
| CN113703140A (en) * | 2021-08-27 | 2021-11-26 | 西安中科立德红外科技有限公司 | Large-area-array compact medium-wave infrared circumferential scanning optical device and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105371960A (en) | Circumferential scanning imaging control method and circumferential scanning imaging system | |
| CN102338665B (en) | Infrared thermal imager and method for detecting infrared objective image by using same | |
| CN103791860B (en) | The tiny angle measurement device and method of view-based access control model detection technique | |
| CN105466573A (en) | A medium-long wave two-waveband thermal infrared imager | |
| CN100568045C (en) | High-resolution imaging self-adaptive optical telescope suitable for working in daytime | |
| CN102735431B (en) | Method for measuring sight line stabilizing accuracy of photoelectric sight-stabilizing system | |
| CN106125273B (en) | A kind of zoom lens | |
| CN205880341U (en) | Zoom lens | |
| CN104539829A (en) | Optical-mechanical structure based on infrared area array detector scanning imaging | |
| CN102818543B (en) | Target free multi-optical axis parallelism detection system based on digital image | |
| CN104360464B (en) | Continuous zooming optical system | |
| CN102901448A (en) | Video camera and laser range finder coaxial photoelectric measuring device | |
| CN103115685A (en) | Infrared multi-detector combined detecting device and infrared detecting method | |
| CN110376725B (en) | Fisheye lens system | |
| US3972584A (en) | Compound optical system with image tilt compensation | |
| CN1798249A (en) | Ranging type digital camera | |
| CN110657782A (en) | Novel single-lens three-dimensional surveying and mapping device and method | |
| CN101004341B (en) | Method for logging flying object in high speed | |
| CN106597422B (en) | Miniaturization photo-electricity passive ranging device | |
| CN101776758B (en) | Distance meter for measuring distance between two target points | |
| CN204964030U (en) | Opto mechanical structure based on infrared area array detector scanning imagery | |
| CN101232580A (en) | Apparatus and method for doubling image picking rate using semi-penetrate semi-transparent mirror | |
| CN110673313B (en) | Zoom fisheye lens system and design method | |
| CN204945480U (en) | Large target surface continuous zooming optical system | |
| RU2298883C2 (en) | Device for calibrating direction of observing line of two-camera television system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160302 |
|
| RJ01 | Rejection of invention patent application after publication |