CN102981270A - Unblocked adaptive varifocal optical system and calibration method thereof - Google Patents
Unblocked adaptive varifocal optical system and calibration method thereof Download PDFInfo
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- CN102981270A CN102981270A CN2012105706731A CN201210570673A CN102981270A CN 102981270 A CN102981270 A CN 102981270A CN 2012105706731 A CN2012105706731 A CN 2012105706731A CN 201210570673 A CN201210570673 A CN 201210570673A CN 102981270 A CN102981270 A CN 102981270A
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Abstract
The invention discloses an unblocked adaptive varifocal optical system and a calibration method thereof. The system conducts varifocal control by deformable mirrors; a Shack-Hartmann wavefront sensor in the system is connected with an adaptive control system assembly; the adaptive control system assembly is connected with two or more deformable mirrors; target light sequentially passes through each deformable mirror to enter an imaging lens assembly; a part of converged target light enters an imaging camera through a spectroscope for imaging; another part of the converged target light is reflected by the spectroscope to enter a first collimating lens through a field stop, and collimated to parallel light to enter the Shack-Hartmann wavefront sensor; image point data is measured; and the adaptive control system assembly revolves wave aberration according to the image point data and operates a corresponding correction signal, and controls at least one deformable mirror to correct the wave aberration of the system. The system is simple in structure, convenient to adjust, and high in imaging quality.
Description
Technical field
The present invention relates to the variable focal length optical system technical field, be specifically related to a kind of nothing and block self-adaptation variable focal length optical system and scaling method thereof.
Background technology
Variable focal length optical system is that a kind of focal length can change continuously and optical system that the image planes position keeps relative stability, by mobile one or more lens combination focal length is changed within the specific limits continuously, and maintenance image planes invariant position, at present, variable focal length optical system commonly used is mainly the mechanical compensation zoom system, the mechanical compensation zoom system mainly realizes the continuous variation of focal length by the nonlinear motion of cam, the shortcoming that this mechanical compensation zoom system exists is: the machining precision of cam has determined the image quality of this zoom system to a great extent, the machining precision of cam can not guarantee, thereby reduced the image quality of each focal position, can only get the aberration correction of several main focal lengths relatively good, and this system architecture is complicated, debugs difficulty.Be subjected to the impact of the conditions such as environment temperature, humidity, certain distortion all can occur in the machinery of this system and glass elements, and then causes the decline of system imaging quality.
Summary of the invention
For solve the image quality that existing machinery compensation zoom system application machine cam zoom exists low, can only get the aberration correction of several main focal lengths relatively good, environmental suitability is poor, debug hard problem, the invention provides a kind of simple in structure, can carry out adaptively correcting to aberration, debug conveniently, image quality is high, error is little nothing blocks self-adaptation variable focal length optical system and scaling method thereof.
The present invention is that the technical scheme that adopts of technical solution problem is as follows:
The invention provides a kind of nothing and block the self-adaptation variable focal length optical system, comprising: two or more deformation reflection mirrors, imaging lens group, spectroscope, imaging camera, field stop, the first collimation lens, Shack-Hartmann Wavefront sensor and adaptive control system assembly;
Described Shack-Hartmann Wavefront sensor links to each other with described adaptive control system assembly, and described adaptive control system assembly links to each other with described two or more deformation reflection mirrors;
Target light enters into imaging lens group through each deformation reflection mirror successively, through after the convergence of imaging lens group, part target light enters into the imaging camera through spectroscope and carries out imaging, another part target light enters into the first collimation lens through the spectroscope reflection and by field stop, the first collimation lens is collimated into directional light with target light and enters into the Shack-Hartmann Wavefront sensor, the Shack-Hartmann Wavefront sensor is measured the picture point data, the adaptive control system assembly goes out the wave aberration union according to the picture point data solver and goes out corresponding correction signal, thereby at least one deformation reflection mirror of controlling in two or more deformation reflection mirrors is proofreaied and correct the wave aberration of this variable focal length optical system.
Described two deformation reflection mirrors comprise first deformation reflection mirror and second deformation reflection mirror that is arranged in order;
Described two above deformation reflection mirrors comprise at least one first deformation reflection mirror and at least one second deformation reflection mirror that is arranged in order.
Described the first deformation reflection mirror comprises:
Thin distortion eyeglass;
With the fixing actuator of the lower surface bonds of described thin distortion eyeglass;
The substrate that is adhesively fixed with the lower surface of described actuator;
The circumference of described thin distortion eyeglass and described substrate are fixed by the fixed support bar, the center of described actuator between described thin distortion eyeglass and substrate.
Described the second deformation reflection mirror comprises:
Thin distortion eyeglass;
With fixing at least two actuators of the lower surface bonds of described thin distortion eyeglass;
The substrate that is adhesively fixed with the lower surface of described at least two actuators;
Described at least two actuators are distributed on the position between described thin distortion eyeglass and the substrate.
Described Shack-Hartmann Wavefront sensor mainly is comprised of microlens array and CCD camera, target light is collimated into directional light through the first collimation lens and incides on the microlens array, microlens array converges to directional light on the CCD camera and at the CCD camera and forms a plurality of picture points, the adaptive control system assembly goes out the wave aberration union according to the picture point data solver on the CCD camera and goes out corresponding correction signal, thereby at least one deformation reflection mirror of controlling in two or more deformation reflection mirrors is proofreaied and correct the wave aberration of this variable focal length optical system.
Described adaptive control system assembly comprises:
The CCD camera signal capture card that links to each other with described CCD camera;
The main control computer that links to each other with described CCD camera signal capture card;
The D/A transition card that links to each other with described main control computer;
With the high-voltage amplifier that described D/A transition card links to each other, described high-voltage amplifier links to each other with at least one deformation reflection mirror in described two or more deformation reflection mirrors;
The main control software that moves in the described main control computer resolves the picture point data of the CCD camera of described CCD camera signal capture card collection, calculate the wave aberration union and go out corresponding correction signal, correction signal is amplified through high-voltage amplifier after changing by described D/A transition card again, provide the correcting value of deformation reflection mirror, by at least one deformation reflection mirror that high-voltage amplifier is controlled in two or more deformation reflection mirrors the wave aberration of this variable focal length optical system is proofreaied and correct.
The present invention also provides a kind of nothing to block the scaling method of self-adaptation variable focal length optical system, the step of the method is as follows: the Calibrating source assembly is moved in this variable focal length optical system, the light that the Calibrating source assembly sends passes through each deformation reflection mirror successively, enter into again imaging lens group, imaging lens group is assembled the target light of being come by the deformation reflection mirror reflection, target light after the convergence is through spectroscope, part target light enters carries out imaging in the imaging camera, another part target light enters into the first collimation lens through field stop, the first collimation lens is collimated into directional light with target light and incides on the microlens array in the Shack-Hartmann Wavefront sensor, microlens array converges to directional light on the CCD camera again, form a plurality of picture points at the CCD camera, CCD camera signal capture card in the adaptive control system assembly gathers the picture point data of CCD camera, the main control software that moves in the main control computer goes out corresponding correction signal according to the wave aberration union that the picture point data can calculate this variable focal length optical system, correction signal is first by amplifying through high-voltage amplifier after the conversion of D/A transition card again, provide the correcting value of deformation reflection mirror, control at least one deformation reflection mirror in two or more deformation reflection mirrors by high-voltage amplifier, make actuator carry out the push-and-pull campaign, realization is to the correction of mirror shape, repeating above said collection calculation correction process, until the threshold value that the wave aberration that records is set less than this variable focal length optical system is monitored the image quality on the imaging camera simultaneously.
Described Calibrating source assembly comprises:
The step motor control translation stage;
Be installed in successively Calibrating source, the second collimation lens and plane mirror on the described step motor control translation stage;
After the light that described Calibrating source sends collimates through described the second collimation lens, enter into two or more deformation reflection mirrors through described plane mirror reflection again, and this variable focal length optical system is demarcated.
The invention has the beneficial effects as follows: compared with prior art, nothing of the present invention is blocked the self-adaptation variable focal length optical system and is adopted two or more deformation reflection mirrors as the varifocal Control Component, take full advantage of deformation reflection mirror and can realize the characteristics of out of focus control, thereby realize the varifocal control to whole variable focal length optical system, saved the trouble of mechanical cam design processing; The present invention has adopted without blocking the formula optical design, takes full advantage of the incident efficient of target light; The present invention has used adaptive optical technique, adopt the Shack-Hartmann Wavefront sensor, realization is to the adaptively correcting control of wave aberration, to carried out active correction control by the wave aberration of processing, debuging, the factors such as deformation, flow perturbation causing, make the performance of variable focal length optical system near ideal state, thereby improve quality of optical imaging.
Variable focal length optical system of the present invention is simple in structure, debugs conveniently, and image quality is high, need to be applicable to varifocal control shooting, target following record etc. optical system and need in the imaging optical system of zoom.
Description of drawings
Fig. 1 is the synoptic diagram that a kind of nothing of the present invention is blocked the self-adaptation variable focal length optical system;
Fig. 2 is the structural representation of the first deformation reflection mirror;
Fig. 3 is the structural representation of the second deformation reflection mirror;
Fig. 4 is the basic principle schematic of Shack-Hartmann Wavefront sensor;
Fig. 5 is the structural representation of adaptive control system assembly;
Fig. 6 is the calibration process synoptic diagram that a kind of nothing of the present invention is blocked the self-adaptation variable focal length optical system.
Among the figure: 1, the first deformation reflection mirror, 2, the second deformation reflection mirror, 3, imaging lens group, 4, spectroscope, 5, the imaging camera, 6, field stop, 7, the first collimation lens, 8, the Shack-Hartmann Wavefront sensor, 81, microlens array, 82, the CCD camera, 9, CCD camera signal capture card, 10, main control computer, 11, the D/A transition card, 12, high-voltage amplifier, 13; thin distortion eyeglass, 14; actuator, 15; substrate; 16; fixed support bar; 17; Calibrating source, 18; the second collimation lens, 19; plane mirror; 20; step motor control translation stage, 21; adaptive control system assembly.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
As shown in Figure 1, a kind of nothing of the present invention is blocked the self-adaptation variable focal length optical system, mainly by two or more deformation reflection mirrors, the image optics assembly, field stop 6, the first collimation lens 7, Shack-Hartmann Wavefront sensor 8 and adaptive control system assembly 21 form, two or more deformation reflection mirrors are placed on the front end of image optics assembly, target light is passed through first each deformation reflection mirror successively, and then enter in the image optics assembly, part target light is carried out imaging in the image optics assembly, another part target light enters in the first collimation lens 7 through field stop 6, the first collimation lens 7 is collimated into directional light with target light and enters in the Shack-Hartmann Wavefront sensor 8, Shack-Hartmann Wavefront sensor 8 is measured the picture point data, adaptive control system assembly 21 goes out corresponding correction signal according to the wave aberration union that the picture point data solver goes out this variable focal length optical system, thereby at least one second deformation reflection mirror of controlling in two or more deformation reflection mirrors is proofreaied and correct system's wave aberration.
deformation reflection mirror is controlled for the varifocal that realizes system, mainly containing two kinds of forms can realize, comprise the first deformation reflection mirror 1 and the second deformation reflection mirror 2, as shown in Figure 2, the first deformation reflection mirror 1 is by thin distortion eyeglass 13, actuator 14, substrate 15 and fixed support bar 16 form, the upper surface of thin distortion eyeglass 13 is through polishing, plated film is as reflecting surface, the upper surface of the lower surface of thin distortion eyeglass 13 and actuator 14 is adhesively fixed, the lower surface of actuator 14 is adhesively fixed in substrate 15, actuator 14 is positioned at the center of the first deformation reflection mirror 1, by the push-and-pull campaign of controlling actuator 14, change the mirror shape of thin distortion eyeglass 13, according to the out of focus demand for control, between the circumference of thin distortion eyeglass 13 and substrate 15, adopt fixed support bar 16 fixing, in the first deformation reflection mirror 1, only has an actuator 14, can only carry out out of focus control to minute surface, can not proofread and correct the wave aberration in this variable focal length optical system, as shown in Figure 3, the second deformation reflection mirror 2 is by thin distortion eyeglass 13, substrate 15 and at least two actuators 14 form, thin distortion eyeglass 13, identical in the connected mode of actuator 14 and substrate 15 and the first speculum 1, at least two actuators 14 are distributed between thin distortion eyeglass 13 and substrate 15, below thin distortion eyeglass 13 in the second deformation reflection mirror 2, a plurality of actuators 14 are arranged, both can realize the out of focus of minute surface is controlled, can proofread and correct the wave aberration of this variable focal length optical system again.Substrate 15 can be adopted the substrate of substrate of glass or other materials.
In variable focal length optical system of the present invention, the complexity that can control according to actual needs and the system of this system suitably increases the quantity of deformation reflection mirror, between the deformation reflection mirror according to spatial relationship, can increase plane mirror 19 as the light path use of turning back, at the meeting spatial position relationship, again light is not caused in the situation of blocking, the angle that should as far as possible guarantee incident target light and minute surface optical axis is less, so just can guarantee the consistance of distorting lens on the two-dimensional space emending frequency as far as possible; Two or more deformation reflection mirrors comprise respectively at least one first deformation reflection mirror 1 and at least one second deformation reflection mirror 2, can control needs according to real system and select.
As shown in Figure 1, the image optics assembly is positioned at after two or more deformation reflection mirrors, formed by imaging lens group 3, spectroscope 4 and imaging camera 5,3 pairs of target light of being come by two or more deformation reflection mirror reflections of imaging lens group are assembled, target light after the convergence is through spectroscope 4, a part enters carries out imaging in the imaging camera 5, another part target light enters in the first collimation lens 7 through field stop 6, and the first collimation lens 7 is collimated into directional light with target light and enters and carry out Wavefront detecting in the Shack-Hartmann Wavefront sensor 8.
As shown in Figure 1, optical lens of 3 usefulness of imaging lens group is done signal, but this imaging lens group 3 comprises the optical lens that at least one is suitable, requires to determine the specific constructive form of this imaging lens group 3 according to service condition, relative aperture and visual field etc.
As shown in Figure 4, the primary element of Shack-Hartmann Wavefront sensor 8 is microlens array 81 and CCD camera 82, the first collimation lens 7 will be collimated into directional light through another part target light after the spectroscope 4 and incide on the microlens array 81, microlens array 81 converges to directional light on the CCD camera 82 again, form a plurality of picture points at CCD camera 82, adaptive control system assembly 21 goes out the wave aberration of this variable focal length optical system and exports corresponding correction signal according to the picture point data solver on the CCD camera 82, thereby 2 pairs of mirror shapes of at least one the second deformation reflection mirror of controlling in two or more deformation reflection mirrors are proofreaied and correct.
As shown in Figure 4,81 pairs of directional lights from the first collimation lens 7 of microlens array realize cutting apart measurement, when directional light is reference plane wave, each lenticule in the microlens array 81 imaging point on CCD camera 82 all is positioned on the optical axis, can be these picture points as reference point, and when directional light has distortion, each lenticule imaging point relative reference point on CCD camera 82 has two-dimensional migration, by this side-play amount is calculated, and make corresponding data and process and just can simulate the corrugated of distorting, proofread and correct on 2 pairs of these distortion corrugateds of at least one second deformation reflection mirror of controlling in this variable focal length optical system, just can make this variable focal length optical system near diffraction limit performance.
When the target light of proofreading and correct is Area Objects, need to be at the target light convergent point, namely a field stop 6 is placed in the front focus position of the first collimation lens 7, thereby the picture point size that restriction microlens array 81 forms at CCD camera 82, the extraction of being convenient to 8 pairs of picture point data of Shack-Hartmann Wavefront sensor is resolved; When the target light of proofreading and correct is point target, can select to place or do not place field stop 6.
As shown in Figure 5, adaptive control system assembly 21 comprises CCD camera signal capture card 9, main control computer 10, D/A transition card 11 and high-voltage amplifier 12, CCD camera signal capture card 9 links to each other with CCD camera 82, be used for gathering the picture point data of CCD camera 82, the main control software of operation resolves the picture point data of the CCD camera 82 of CCD camera signal capture card 9 collections in the main control computer 10, calculate the wave aberration of this variable focal length optical system and export corresponding correction signal, correction signal is first by amplifying through high-voltage amplifier 12 after 11 conversions of D/A transition card again, provide the correcting value of deformation reflection mirror, by at least one second deformation reflection mirror 2 in high-voltage amplifier 12 two or more deformation reflection mirrors of control, make actuator 14 carry out the push-and-pull campaign, realization is to the correction of mirror shape, thereby proofread and correct the wave aberration of this variable focal length optical system, improve image quality.
The dynamic aberration bearing calibration of variable focal length optical system of the present invention is specially: target light is passed through first each deformation reflection mirror successively, and then enter in the imaging lens group 3,3 pairs of target light of being come by the deformation reflection mirror reflection of imaging lens group are assembled, target light after the convergence is through spectroscope 4, a part enters carries out imaging in the imaging camera 5, another part target light enters in the first collimation lens 7 through field stop 6, the first collimation lens 7 is collimated into directional light with target light and incides on the microlens array 81 in the Shack-Hartmann Wavefront sensor 8, microlens array 81 converges to directional light on the CCD camera 82 again, form a plurality of picture points at CCD camera 82, CCD camera signal capture card 9 in the adaptive control system assembly 21 gathers the picture point data of CCD camera 82, the main control software of operation goes out corresponding correction signal according to the wave aberration union that the picture point data on the CCD camera 82 can calculate this variable focal length optical system in the main control computer 10, correction signal is first by amplifying through high-voltage amplifier 12 after 11 conversions of D/A transition card again, provide the correcting value of deformation reflection mirror, by at least one second deformation reflection mirror 2 in high-voltage amplifier 12 two or more deformation reflection mirrors of control, make actuator 14 carry out the push-and-pull campaign, realization is to the correction of mirror shape, thereby proofread and correct the wave aberration of this variable focal length optical system, improve image quality.
The dynamic aberration bearing calibration of variable focal length optical system of the present invention can be proofreaied and correct the optical wave-front disturbance that is caused by air-flow, can also proofread and correct simultaneously the machinery, the optical element that are caused by the ambient temperature and humidity variation and be out of shape the impact on optical imagery, can also carry out the adaptive optics correction to debug error and the minute surface aberration etc. of system, improve the imaging of optical systems quality.
Variable focal length optical system of the present invention is before carrying out imaging to target, need to demarcate it, adopt the Calibrating source assembly that this variable focal length optical system is demarcated, as shown in Figure 6, the Calibrating source assembly is by Calibrating source 17, the second collimation lens 18, plane mirror 19 and step motor control translation stage 20 form, Calibrating source 17, the second collimation lens 18, plane mirror 19 is installed on the step motor control translation stage 20 successively, the second collimation lens 18 is installed in position between Calibrating source 17 and the plane mirror 19, the placed angle of plane mirror 19 is to be determined by imaging lens group 3, as long as adjust plane mirror 19, the angle of inclination of the first deformation reflection mirror 1 and the second deformation reflection mirror 2, demarcation light is just in time incided in the imaging lens group 3 to be got final product, Calibrating source 17 provides the reference plane ripple to system, after the light that Calibrating source 17 sends collimated through the second collimation lens 18,19 reflections entered into two or more deformation reflection mirrors and subsequent optical path through plane mirror again.The Calibrating source assembly shifts out system after demarcating in this variable focal length optical system timing signal immigration system.
The scaling method of variable focal length optical system of the present invention is specially: the Calibrating source assembly is moved in this variable focal length optical system by step motor control translation stage 20, after the light that Calibrating source 17 sends collimates through the second collimation lens 18, each deformation reflection mirror is passed through in 19 reflections successively through plane mirror again, and then enter in the imaging lens group 3,3 pairs of target light of being come by the deformation reflection mirror reflection of imaging lens group are assembled, target light after the convergence is through spectroscope 4, a part enters carries out imaging in the imaging camera 5, another part target light enters in the first collimation lens 7 through field stop 6, the first collimation lens 7 is collimated into directional light with target light and incides on the microlens array 81 in the Shack-Hartmann Wavefront sensor 8, microlens array 81 converges to directional light on the CCD camera 82 again, form a plurality of picture points at CCD camera 82, can calculate the wave aberration of this variable focal length optical system according to the picture point data on the CCD camera 82, CCD camera signal capture card 9 in the adaptive control system assembly 21 gathers the picture point data of CCD camera 82, the main control software of operation goes out the wave aberration union by the picture point data solver and goes out corresponding correction signal in the main control computer 10, correction signal is first by amplifying through high-voltage amplifier 12 after 11 conversions of D/A transition card again, provide the correcting value of deformation reflection mirror, by at least one second deformation reflection mirror 2 in high-voltage amplifier 12 two or more deformation reflection mirrors of control, make actuator 14 carry out the push-and-pull campaign, realization is to the correction of mirror shape, repeating above said collection calculation correction process, until the threshold value (as less than 1/30 wavelength) that the wave aberration that records is set less than this variable focal length optical system, monitor simultaneously the image quality on the imaging camera 5, ideally, after correction, should be able to observe diffraction spot.Behind the system calibrating, utilize step motor control translation stage 20 that the Calibrating source assembly is shifted out from system, this variable focal length optical system just can carry out imaging to target.
Variable focal length optical system of the present invention is demarcated, can proofread and correct on the one hand the initial face shape error of deformation reflection mirror, the residual error of on the other hand can corrective system debuging, simultaneously, utilize Calibrating source 17, can also carry out validation test to the varifocal performance of system.
Claims (8)
1. a nothing is blocked the self-adaptation variable focal length optical system, it is characterized in that, comprising: two or more deformation reflection mirrors, imaging lens group (3), spectroscope (4), imaging camera (5), field stop (6), the first collimation lens (7), Shack-Hartmann Wavefront sensor (8) and adaptive control system assembly (21);
Described Shack-Hartmann Wavefront sensor (8) links to each other with described adaptive control system assembly (21), and described adaptive control system assembly (21) links to each other with described two or more deformation reflection mirrors;
Target light enters into imaging lens group (3) through each deformation reflection mirror successively, after the convergence through imaging lens group (3), part target light enters into imaging camera (5) through spectroscope (4) and carries out imaging, another part target light enters into the first collimation lens (7) through spectroscope (4) reflection and by field stop (6), the first collimation lens (7) is collimated into directional light with target light and enters into Shack-Hartmann Wavefront sensor (8), Shack-Hartmann Wavefront sensor (8) is measured the picture point data, adaptive control system assembly (21) goes out the wave aberration union according to the picture point data solver and goes out corresponding correction signal, thereby at least one deformation reflection mirror of controlling in two or more deformation reflection mirrors is proofreaied and correct the wave aberration of this variable focal length optical system.
2. a kind of nothing according to claim 1 is blocked the self-adaptation variable focal length optical system, it is characterized in that,
Described two deformation reflection mirrors comprise first deformation reflection mirror (1) and second deformation reflection mirror (2) that is arranged in order;
Described two above deformation reflection mirrors comprise at least one first deformation reflection mirror (1) and at least one the second deformation reflection mirror (2) that is arranged in order.
3. a kind of nothing according to claim 2 is blocked the self-adaptation variable focal length optical system, it is characterized in that,
Described the first deformation reflection mirror (1) comprising:
Thin distortion eyeglass (13);
With the fixing actuator (14) of the lower surface bonds of described thin distortion eyeglass (13);
The substrate (15) that is adhesively fixed with the lower surface of described actuator (14);
The circumference of described thin distortion eyeglass (13) and described substrate (15) are fixing by fixed support bar (16), and described actuator (14) is positioned at the center between described thin distortion eyeglass (13) and the substrate (15).
4. a kind of nothing according to claim 2 is blocked the self-adaptation variable focal length optical system, it is characterized in that,
Described the second deformation reflection mirror (2) comprising:
Thin distortion eyeglass (13);
With fixing at least two actuators (14) of the lower surface bonds of described thin distortion eyeglass (13);
The substrate (15) that is adhesively fixed with the lower surface of described at least two actuators (14);
Described at least two actuators (14) are distributed on the position between described thin distortion eyeglass (13) and the substrate (15).
5. a kind of nothing according to claim 1 is blocked the self-adaptation variable focal length optical system, it is characterized in that,
Described Shack-Hartmann Wavefront sensor (8) mainly is comprised of microlens array (81) and CCD camera (82), target light is collimated into directional light through the first collimation lens (7) and incides on the microlens array (81), microlens array (81) converges to CCD camera (82) with directional light and upward and at CCD camera (82) forms a plurality of picture points, adaptive control system assembly (21) goes out the wave aberration union according to the picture point data solver on the CCD camera (82) and goes out corresponding correction signal, thereby at least one deformation reflection mirror of controlling in two or more deformation reflection mirrors is proofreaied and correct the wave aberration of this variable focal length optical system.
6. a kind of nothing according to claim 5 is blocked the self-adaptation variable focal length optical system, it is characterized in that,
Described adaptive control system assembly (21) comprising:
The CCD camera signal capture card (9) that links to each other with described CCD camera (82);
The main control computer (10) that links to each other with described CCD camera signal capture card (9);
The D/A transition card (11) that links to each other with described main control computer (10);
The high-voltage amplifier (12) that links to each other with described D/A transition card (11), described high-voltage amplifier (12) links to each other with described two or more deformation reflection mirrors;
The main control software of operation resolves the picture point data of the CCD camera (82) of described CCD camera signal capture card (9) collection in the described main control computer (10), calculate the wave aberration union and go out corresponding correction signal, correction signal is amplified through high-voltage amplifier (12) after changing by described D/A transition card (11) again, provide the correcting value of deformation reflection mirror, by at least one deformation reflection mirror that high-voltage amplifier (12) is controlled in two or more deformation reflection mirrors the wave aberration of this variable focal length optical system is proofreaied and correct.
7. a kind of nothing as claimed in claim 1 is blocked the scaling method of self-adaptation variable focal length optical system, it is characterized in that, the step of the method is as follows: the Calibrating source assembly is moved in this variable focal length optical system, the light that the Calibrating source assembly sends passes through each deformation reflection mirror successively, enter into again imaging lens group (3), imaging lens group (3) is assembled the target light of being come by the deformation reflection mirror reflection, target light after the convergence is through spectroscope (4), part target light enters in the imaging camera (5) carries out imaging, another part target light enters into the first collimation lens (7) through field stop (6), the first collimation lens (7) is collimated into directional light with target light and incides on the microlens array (81) in the Shack-Hartmann Wavefront sensor (8), microlens array (81) converges to directional light on the CCD camera (82) again, form a plurality of picture points at CCD camera (82), CCD camera signal capture card (9) in the adaptive control system assembly (21) gathers the picture point data of CCD camera (82), the main control software of operation goes out corresponding correction signal according to the wave aberration union that the picture point data can calculate this variable focal length optical system in the main control computer (10), correction signal is first by amplifying through high-voltage amplifier (12) after D/A transition card (11) conversion again, provide the correcting value of deformation reflection mirror, control at least one deformation reflection mirror in two or more deformation reflection mirrors by high-voltage amplifier (12), make actuator (14) carry out the push-and-pull campaign, realization is to the correction of mirror shape, repeating above said collection calculation correction process, until the threshold value that the wave aberration that records is set less than this variable focal length optical system is monitored the image quality on the imaging camera (5) simultaneously.
8. a kind of nothing according to claim 7 is blocked the scaling method of self-adaptation variable focal length optical system, it is characterized in that,
Described Calibrating source assembly comprises:
Step motor control translation stage (20);
Be installed in successively Calibrating source (17), the second collimation lens (18) and plane mirror (19) on the described step motor control translation stage (20);
After the light that described Calibrating source (17) sends collimates through described the second collimation lens (18), pass through again described plane mirror (19) reflection and enter into two or more deformation reflection mirrors, and this variable focal length optical system is demarcated.
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