CN104535187A - Automatic device for compact multi-band and full-polarization imaging - Google Patents
Automatic device for compact multi-band and full-polarization imaging Download PDFInfo
- Publication number
- CN104535187A CN104535187A CN201410830626.5A CN201410830626A CN104535187A CN 104535187 A CN104535187 A CN 104535187A CN 201410830626 A CN201410830626 A CN 201410830626A CN 104535187 A CN104535187 A CN 104535187A
- Authority
- CN
- China
- Prior art keywords
- stepper motor
- wave plate
- cylinder
- polarization
- web joint
- 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.)
- Granted
Links
Landscapes
- Blocking Light For Cameras (AREA)
Abstract
The invention relates to an automatic device for compact multi-band and full-polarization imaging. The automatic device for the compact multi-band and full-polarization imaging is characterized in that the automatic device comprises a lens fixing rack, a filter turning wheel, a 1/4 wave plate unit, a line polaroid unit, a collimation lens and a motor system. The motor system controls the filter turning wheel to gate a current wave band, the 1/4 wave plate unit and the line polaroid unit are rotated, and a control unit triggers a CCD to achieve shutter imaging. The polarization image of the current wave band is acquired, and the multi-band and full-polarization imaging is achieved by automatically rotating the filter turning wheel. According to the device, the filter turning wheel, the 1/4 wave plate unit, the line polaroid unit, stepping motors and the like are fixedly arranged on the lens fixing rack, the automatic device has the advantages of being simple in optical structure, compact in size, low in power consumption, low in cost and the like, and the possibility of achieving a portable spectral polarization imager is provided. The automatic device can be used for combining polarizing elements such as filters, phase retarders and polaroids at multiple angles, and important application value is achieved for studying the problems of polarization changes, multi-band and full-polarization parameter measuring and the like in an optical system.
Description
Technical field
The invention belongs to polarization imaging field of detecting, be specifically related to a kind of automation equipment of compact multiband full polarization imaging.
Background technology
Polarization imaging technology is mainly used in the Stokes vector image obtaining target, and according to the method obtaining polarization image, polarization imaging is mainly divided into sequential polarization imaging, interfere type polarization imaging and spatial domain polarization imaging.Sequential polarization imaging, be obtain the polarization figure of different angles by rotatable polarization member or changed the polarization characteristic imaging of polarizer by modulation device, advantage is the advantages such as optical texture is simple, with low cost, and shortcoming to process moving target.Interfere type polarization imaging, cross-interference issue when ubiquity polychromatic light or broadband imaging between different wave length, is mainly used in single wavelength polarized imaging system, and the computing such as Fourier transform and inverse transformation, adds the complexity of data processing.
Current acquisition polarization image mainly adopts spatial domain polarization imaging method, solve in sequential polarization imaging method because repetitive measurement Problems existing, but each Polarization Detection unit (optical system, detector etc.) inconsistency of performance is the error component that the method cannot be eliminated in Polarization Detection, cause its detection accuracy not high, and optical system is complicated, volume is comparatively large, involves great expense.Domestic comparatively early be " polarization imaging device " publication numbers of three CCD imagings designed by Anhui ray machine in 2002 be CN2569177Y, three polaroid directions are 0 °, 60 °, 120 ° fixed placement, belong to Frame projection polarization imaging detection device, structure is more complicated, volume is comparatively large, and can only measure three polarization parameters.University Of Suzhou Shen in 2013 is that the people etc. disclose " a kind of point aperture optical camera lens for polarization imager ", publication number is CN103197403A, adopt the eccentric optical design from axle, four-way list CCD full polarization imaging, four polaroid directions are 0 °, 45 °, 90 °, 135 ° fixed placement, but each channel signal arrives the information of CCD easily influences each other and cause measuring accuracy to decline.Can find out, current spatial domain polarization imaging is adopt fixing polarizer direction (linear polarizer mostly, quarter wave plate etc.) formation method, from the mechanism of polarisation-affecting imaging, the problems such as the change of the polarization state that the characteristic of polarizer, the direction of polarizer in optical system, target light transmit in imaging optical system and system calibration, have important impact to the precision that polarization parameter is measured.
Summary of the invention
The object of the present invention is to provide a kind of automation equipment of compact multiband full polarization imaging, simplify full polarization imaging optical texture, enable the visible ray of the multi-angle combination carrying out the polarizers such as filter plate, phase delay chip and polaroid, the full polarization parameter of multiband of near-infrared band is measured.
Realizing the object of the invention technical solution is: a kind of automation equipment of compact multiband full polarization imaging, comprises lens fixing bracket, collimation camera lens, electric system, filtering runner, quarter wave plate unit and linear polarizer unit; Lens fixing bracket comprises opening cylinder, motor fixing plate, arc web joint and rearmounted cylinder, opening cylinder is roof opening, opening part connects two pieces of motor fixing plates be arranged in parallel respectively, collimation camera lens is arranged on the opening cylinder end of lens fixing bracket, the opening cylinder other end is connected with rearmounted cylinder by arc web joint, and opening cylinder is relative with the roof openend of opening cylinder with the junction of arc web joint.Quarter wave plate unit is arranged on the end that rearmounted cylinder is connected with arc web joint, and linear polarizer unit is arranged on one end that rearmounted cylinder connects away from arc web joint; Electric system comprises the first stepper motor, the second stepper motor and the 3rd stepper motor, first stepper motor is fixed by motor fixing plate, the motor shaft of the first stepper motor is through filtering roller centre, filtering runner is made to be positioned at above arc web joint, second stepper motor and the 3rd stepper motor are all fixed on rearmounted cylinder outer wall, the motor shaft of the second stepper motor is connected with/wave plate unit, and the motor shaft of the 3rd stepper motor is connected with linear polarizer unit.
Above-mentioned quarter wave plate unit comprises the first clamping rings, the first movable annulus, the first belt and quarter wave plate; Quarter wave plate is fixed on the first movable annulus, first movable annulus is flexibly connected with the first clamping rings, first belt sleeve is at the first movable annulus outer wall, and be connected with the motor shaft of the second stepper motor, the motor shaft of the second stepper motor rotates, drive the first belt that the first movable annulus is rotated around the first clamping rings, the first clamping rings is fixed on one end that rearmounted cylinder is connected with arc web joint.
Above-mentioned linear polarizer unit comprises the second clamping rings, the second movable annulus, the second belt and linear polarizer, linear polarizer is fixed on the second movable annulus, second movable annulus is flexibly connected with the second clamping rings, second belt sleeve is at the second movable annulus outer wall, and be connected with the motor shaft of the 3rd stepper motor, the motor shaft of the 3rd stepper motor rotates, drive the second belt that the second movable annulus is rotated around the second clamping rings, the second clamping rings is fixed on one end that rearmounted cylinder connects away from arc web joint.
Above-mentioned opening cylinder, arc web joint are all identical with the diameter of rearmounted cylinder.
Above-mentioned filtering runner, along filtering roller centre, be uniformly distributed six filtering holes on filtering rotating disk, filtering is provided with filter plate in hole; When filtering runner rotates, be positioned at the filter plate center of filtering runner minimum point and collimation camera lens common optical axis.
Above-mentioned arc web joint joint face is contour.
The present invention compared with prior art, its remarkable advantage:
(1) compact structure.Collimation lens, filtering runner, quarter wave plate unit, linear polarizer unit, the first stepper motor, the second stepper motor and the 3rd stepper motor are fixed on a compact entirety by lens fixing bracket.The total length of this device (containing mounted motor length) is less than 100mm, height and width are less than 90mm respectively, and motor adopts 12V 1A storage battery power supply, have that optical texture is compact, volume is little, the advantage such as low in energy consumption, for portable spectral polarization imaging instrument realizes providing possibility.
(2) automatically control to combine with multi-angle.Electric system controls filtering runner, quarter wave plate unit and linear polarizer finite element rotation automatically, realizes the full-polarization image in automatic acquisition different-waveband, different quarter wave plate direction, different polarization sheet direction.Can reach reliable and stable, save manpower, the object reduced costs.This device can carry out the multi-angle combination of the polarizers such as filter plate, phase delay chip and polaroid, has important using value to problems such as polarization state change, the full polarization parameter measurements of multiband in Optical system.
(3) full polarization parameter is measured.This device is utilized to coordinate ccd detector can realize comprising to same scene objects the visible ray of V component, the wave band full polarization imagings such as near infrared, the strength information that goal pels is corresponding can be obtained, the multi-band image cube information of spectrum polarization information, comprise the pixel radiation intensity of target different-waveband, I component in Stokes' parameter, Q component, U component, V component, linear polarization degree component, circular polarization component, the important polarization parameters such as polarization angle component and ellipse drift angle component, to the correlative factor of probing into polarisation-affecting detection, effective implementation goal Polarization Detection or resist significant.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the present invention is applied to multiband full polarization imaging.
Fig. 2 is one-piece construction schematic diagram of the present invention.
Fig. 3 is lens fixing bracket structural drawing of the present invention.
Fig. 4 is quarter wave plate cellular construction figure of the present invention.
Fig. 5 is linear polarizer cellular construction figure of the present invention.
Fig. 6 is the dimensional drawing (unit mm) of the lens fixing bracket of embodiments of the invention.
Fig. 7 is the filtering runner dimensional drawing (unit mm) of embodiments of the invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Composition graphs 2, a kind of automation equipment of compact multiband full polarization imaging, comprises lens fixing bracket 1, collimation camera lens 2, electric system 3, filtering runner 4, quarter wave plate unit 107 and linear polarizer unit 108.Collimation lens 2, filtering runner 4, quarter wave plate unit 107, linear polarizer unit 108, first stepper motor 301, second stepper motor 302 and the 3rd stepper motor 303 are fixed on a compact entirety by lens fixing bracket 1.The total length of single unit system (containing mounted motor length) is less than 100mm, and height and width are less than 90mm respectively.
Composition graphs 3, above-mentioned lens fixing bracket 1 comprises opening cylinder 101, motor fixing plate 102, arc web joint 103 and rearmounted cylinder 106.Opening cylinder 101 is roof opening, opening part connects two pieces of motor fixing plates be arranged in parallel 102 respectively, collimation camera lens 2 is arranged on opening cylinder 101 end of lens fixing bracket 1, opening cylinder 101 other end is connected with rearmounted cylinder 106 by arc web joint 103, and opening cylinder 101 is relative with the roof openend of opening cylinder 101 with the junction of arc web joint 103.Quarter wave plate unit 107 is arranged on the end that rearmounted cylinder 106 is connected with arc web joint 103, and linear polarizer unit 108 is arranged on one end that rearmounted cylinder 106 connects away from arc web joint 103; Electric system 3 comprises the first stepper motor 301, second stepper motor 302 and the 3rd stepper motor 303, first stepper motor 301 is fixed by motor fixing threaded hole 5 and motor fixing plate 102, the motor shaft of the first stepper motor 301 is through filtering runner 4 center, filtering runner 4 is made to be positioned at above arc web joint 103, second stepper motor 302 and the 3rd stepper motor 303 are all fixed on rearmounted cylinder 106 outer wall, the motor shaft of the second stepper motor 302 is connected with quarter wave plate unit 107, and the motor shaft of the 3rd stepper motor 303 is connected with linear polarizer unit 108.
Above-mentioned arc web joint 103 joint face is contour, and opening cylinder 101, arc web joint 103 are all identical with the diameter of rearmounted cylinder 106.
Composition graphs 4, above-mentioned quarter wave plate unit 107, comprises the first clamping rings 1071, first movable annulus 1072, first belt 1073 and quarter wave plate 1074.Quarter wave plate 1074 is fixed on the first movable annulus 1072, first movable annulus 1072 is flexibly connected with the first clamping rings 1071, first belt 1073 is enclosed within the first movable annulus 1072 outer wall, and be connected with the motor shaft of the second stepper motor 302, the motor shaft of the second stepper motor 302 rotates, drive the first belt 1073 that first movable annulus 1072 is rotated around the first clamping rings 1071, the first clamping rings 1071 is fixed on one end quarter wave plate set collar 104 that rearmounted cylinder 106 is connected with arc web joint 103.
Composition graphs 5, above-mentioned linear polarizer unit 108, comprises the second clamping rings 1081, second movable annulus 1082, second belt 1083 and linear polarizer 1084.Linear polarizer 1084 is fixed on the second movable annulus 1082, second movable annulus 1082 is flexibly connected with the second clamping rings 1081, second belt 1083 is enclosed within the second movable annulus 1082 outer wall, and be connected with the motor shaft of the 3rd stepper motor 303, the motor shaft of the 3rd stepper motor 303 rotates, drive the second belt 1083 that second movable annulus 1082 is rotated around the second clamping rings 1081, the second clamping rings 1081 is fixed on one end linear polarizer set collar 105 that rearmounted cylinder 106 connects away from arc web joint 103.
The filtering hole common optical axis of above-mentioned opening cylinder 101, collimation camera lens 2, the movable annulus of quarter wave plate first 1072 and the movable annulus 1082 of linear polarizer second, filtering runner 4 minimum point.
Embodiment 1
An automation equipment for compact multiband full polarization imaging, comprises lens fixing bracket 1, collimation camera lens 2, electric system 3, filtering runner 4, motor fixing threaded hole 5, quarter wave plate unit 107 and linear polarizer unit 108.Collimation lens 2, filtering runner 4, quarter wave plate unit 107, linear polarizer unit 108, first stepper motor 301, second stepper motor 302 and the 3rd stepper motor 303 are fixed on a compact entirety by lens fixing bracket 1.The total length of single unit system (containing mounted motor length) is less than 100mm, and height and width are less than 90mm respectively.Aperture is with by collimation camera lens 2.
Composition graphs 3, above-mentioned lens fixing bracket 1 comprises opening cylinder 101, motor fixing plate 102, arc web joint 103 and rearmounted cylinder 106.Opening cylinder 101 is roof opening, opening part welds two pieces of motor fixing plates be arranged in parallel 102 respectively, collimation camera lens 2 is fixed in the draw-in groove of opening cylinder 101 end of lens fixing bracket 1, opening cylinder 101 other end is connected with rearmounted cylinder 106 by arc web joint 103, arc web joint 103 is welded between opening cylinder 101 and rearmounted cylinder 106, and opening cylinder 101 is relative with the roof openend of opening cylinder 101 with the junction of arc web joint 103.Quarter wave plate unit 107 is stuck in the end that rearmounted cylinder 106 is connected with arc web joint 103, and linear polarizer unit 108 is stuck in one end that rearmounted cylinder 106 connects away from arc web joint 103; Electric system 3 comprises the first stepper motor 301, second stepper motor 302 and the 3rd stepper motor 303, first stepper motor 301 is bolted on motor fixing plate 102, the motor shaft of the first stepper motor 301 is through filtering runner 4 center, filtering runner 4 is made to be positioned at above arc web joint 103, second stepper motor 302 and the 3rd stepper motor 303 are all bolted on rearmounted cylinder 106 outer wall, the motor shaft of the second stepper motor 302 is connected with quarter wave plate unit 107, and the motor shaft of the 3rd stepper motor 303 is connected with linear polarizer unit 108.Above-mentioned three stepper motors are placed on lens fixing bracket 1 compactly, the first stepper motor is fixed at opening cylinder 101 top, the left and right place of horizontal level of rear end cylinder 106 fixes the second stepper motor and the 3rd stepper motor respectively, forms stable equilibrium's effect of single unit system.
Above-mentioned arc web joint 103 joint face is contour, and opening cylinder 101, arc web joint 103 are all identical with the diameter of rearmounted cylinder 106.
Composition graphs 4, above-mentioned quarter wave plate unit 107, comprises the first clamping rings 1071, first movable annulus 1072, first belt 1073 and quarter wave plate 1074.Quarter wave plate 1074 is pasted at the first movable annulus 1072 center, first movable annulus 1072 is flexibly connected by notch with the first clamping rings 1071, first belt 1073 is enclosed within the first movable annulus 1072 outer wall, and be connected with the motor shaft of the second stepper motor 302, hang on the motor shaft of the second stepper motor 302, the motor shaft of the second stepper motor 302 rotates, drive the first belt 1073 that first movable annulus 1072 is rotated around the first clamping rings 1071, first clamping rings 1071 is stuck on one end quarter wave plate set collar 104 that rearmounted cylinder 106 is connected with arc web joint 103 by draw-in groove.Because quarter wave plate is by the restriction of service band, design quarter wave plate unit is that (physical construction is identical with near infrared two grip assembly for visible ray, the optical lens material used is different), quarter wave plate unit 107 is detachable assembled with the connection of quarter wave plate set collar 104, is convenient for changing visible ray quarter wave plate unit and near infrared quarter wave plate unit.
Composition graphs 5, above-mentioned linear polarizer unit 108, comprises the second clamping rings 1081, second movable annulus 1082, second belt 1083 and linear polarizer 1084.Linear polarizer 1084 is fixed on the second movable annulus 1082 center, second movable annulus 1082 is flexibly connected by notch with the second clamping rings 1081, second belt 1083 is enclosed within the second movable annulus 1082 outer wall, and be connected with the motor shaft of the 3rd stepper motor 303, hang on the motor shaft of the 3rd stepper motor 303, the motor shaft of the 3rd stepper motor 303 rotates, drive the second belt 1083 that second movable annulus 1082 is rotated around the second clamping rings 1081, second clamping rings 1081 is stuck on one end linear polarizer set collar 105 that rearmounted cylinder 106 connects away from arc web joint 103 by draw-in groove.Because linear polarizer is by the restriction of service band, design lines polarizer unit is that (physical construction is identical with near infrared two grip assembly for visible ray, the optical lens material used is different), linear polarizer unit 108 is detachable assembled with the connection of linear polarizer set collar 105, is convenient for changing luminous ray polarizer unit and near infrared ray polarizer unit.
Above-mentioned filtering runner 4, along filtering runner 4 center, be uniformly distributed six filtering holes on filtering rotating disk 402, filtering is provided with filter plate in hole; Filtering roller centre 4 perforate is " D " font hole 403, diameter 4mm, has antiskid function when the design in " D " font hole makes the first stepper motor 301 rotating shaft connect filtering rotating disk 402 center rotating; When filtering runner 4 rotates, be positioned at the filter plate center of filtering runner 4 minimum point and collimation camera lens 2 common optical axis.Filter plate is 5 filter plates and 1 neutral sheet, visible light wave range centre wavelength and bandwidth 400 ± 10nm, 450 ± 10nm, 550 ± 10nm, 650 ± 10nm, 700 ± 10nm respectively; (nearly red band center wavelength and bandwidth are respectively 800 ± 10nm, 850 ± 10nm, 900 ± 10nm, 950 ± 10nm, 1000 ± 10nm), by the control of the first stepper motor 301, realizes visible ray, near infrared multiband gating automatically.
Composition graphs 6, the opening cylinder 101 of lens fixing bracket 1, arc web joint 103, rearmounted cylinder 106 diameter are 38mm, and length is respectively 25.4mm, 30.5mm, 25.4mm.The height of opening cylinder 101 aperture position distance bottom surface is 35mm, and open height compares opening cylinder 101 diameter sinking 3mm, realizes filtering runner 4 and turns to the center, filtering hole of minimum point and collimation camera lens 2 common optical axis.Arc web joint 103 is 8mm apart from the height of bottom surface, can not affect filtering runner 4 and rotate.Quarter wave plate first clamping rings 1071 is identical with rearmounted cylinder 106 diameter with linear polarizer second clamping rings 1081, all can be fixedly connected with rearmounted cylinder 106.
Composition graphs 7, the rotating disk 402 diameter 84mm of filtering runner 4, center, six filtering holes be evenly distributed on rotating disk 402 concentrically diameter be in the isocentric circular arc of 52.4mm.The motor shaft of the first stepper motor 301 is through filtering runner 4 center, and motor fuselage diameter is 20mm, can compactly be installed on motor fixing plate 102.Following five partial design are common optical axis: opening cylinder 101, collimation camera lens 2, the filtering hole of filtering runner 4 minimum point, the movable annulus of quarter wave plate first 1072 and the movable annulus 1082 of linear polarizer second.The above two diameters are respectively 38mm, 32mm, and rear three's diameter is 25.4mm.
Composition graphs 1, will be applied to multiband full polarization imaging to the present invention.Dotted line frame is lens fixing bracket 1 schematic diagram of the function of the present invention.The premenstrual collimation camera lens 2 of putting of scene light becomes directional light, ccd detector is entered respectively through filtering runner 4, quarter wave plate unit 107, linear polarizer unit 108, rearmounted amasthenic lens, image is stored in computing machine, coordinate the control of electric system 3, trigger the imaging of CCD shutter, obtain multiband full-polarization image.During concrete enforcement, amasthenic lens is focused until clear picture, first stepper motor 301 controls filtering runner 4 and turned over for 1/6 cycle, gating wave band, second stepper motor 302 controls quarter wave plate unit 107 rotation and the 3rd stepper motor 303 control line polarizer unit 108 rotates, control circuit system triggers CCD shutter imaging four times, obtains the full-polarization image of current band, changes wave band and can obtain multiband full-polarization image.Main devices of the present invention is described below:
(1) quarter wave plate adopts the achromatism quarter wave plate of Thorlabs, visible light wave range model is AQWP10M-600, service band 400-700nm, phase delay accuracy λ/40-λ/120, (nearly red wave band model is AQWP10M-980 to diameter of phi 22.6mm, service band 700-1100nm, phase delay accuracy λ/20-λ/80, diameter of phi 22.6mm).
(2) linear polarizer adopts the laminated film linear polarizer of Thorlabs, visible light wave range model is LPVISE100-A, anti-reflection wave band 400-700nm, extinction ratio: 100:1 (400-500nm) and 1000:1 (500-700nm), (nearly red wave band type model is LPVISE100-B to diameter of phi 25.4mm, anti-reflection wave band 700-1100nm, extinction ratio: 400:1 (600-1100nm), diameter of phi 25.4mm).
(3) filter plate selects the dielectric coating filter adopting Thorlabs, diameter of phi 25.4mm (± 0.1mm), visible light wave range centre wavelength and bandwidth are respectively 400 ± 10nm, 450 ± 10nm, 550 ± 10nm, (nearly red band center wavelength and bandwidth are respectively, 800 ± 10nm for 650 ± 10nm, 700 ± 10nm, 850 ± 10nm, 900 ± 10nm, 950 ± 10nm, 1000 ± 10nm).
(4) stepper motor selects Wuxi three to open up the volume compact type motor of Electric Appliance Equipment Co., Ltd's production.The model that stepper motor 302 and stepper motor 303 adopt is 20HS2802A4, step angle 1.8 °, statical moment 1.4Ncm; Stepper motor 301 is owing to being control the larger filtering runner of diameter, and adopt the motor that statical moment is larger, model is 20HS4006A4, step angle 1.8 °, statical moment 2.6Ncm; Fuselage diameter is 20mm, and 12V powers, and can support that portable storage battery is powered.
(5) ccd detector selects the LM165 monochromatic CCD camera of UMENER company, this camera adopts SONY ICX285CCD chip, 3/2 inch, resolution 1360x1024, pixel dimension 6.4um x 6.4um, spectrum respective range 400nm-1000nm, adopts USB to carry out data transmission and power supply, portable notebook computer can be supported to transmit and power supply.
This device is utilized to carry out full polarization imaging step as follows:
Step 1: select above-mentioned visible filter to be installed on filtering runner 4, selects above-mentioned visible ray quarter wave plate unit 107 to be installed on quarter wave plate set collar 104, selects above-mentioned luminous ray polarization unit 108 to be loaded on linear polarizer set collar 105;
Step 2: amasthenic lens is focused;
Step 3: the first stepper motor 301 controls filtering runner 4 and rotated for 1/6 cycle, gating current band;
Step 4: the second stepper motor 302 controls the intensity image that quarter wave plate unit 107 and the 3rd stepper motor 303 linear polarizer unit 108 obtain current band;
Step 5: repeat step 3,4 processes, obtains the full polarization figure of visible light wave range;
Step 6: repeat step 1, be replaced by above-mentioned near-infrared band optical filter, near infrared quarter wave plate unit 107, near infrared ray polarization unit 108; Repeat step 2,3,4,5 processes, obtain near-infrared band full polarization figure.
The full polarization imaging method of above-mentioned steps 4 is as follows
If the Stokes vector that light arrives CCD is S=[I, Q, U, V]
t, control quarter wave plate unit 107 by the second stepper motor 302 and rotate quarter wave plate and the 3rd stepper motor 303 linear polarizer unit 108 polaroid, make quarter wave plate and linear polarizer polarization direction meet below four conditions time, obtain four width plot of light intensity pictures
The fast axle of quarter wave plate is consistent with linear polarizer printing opacity direction, with the intensity map I (0 °, 0 °) of x-axis angle 0 °,
The fast axle of quarter wave plate is consistent with linear polarizer printing opacity direction, with the intensity map I (90 °, 0 °) of x-axis angle 90 °,
The fast axle of quarter wave plate is consistent with linear polarizer printing opacity direction, with the intensity map I (45 °, 0 °) of x-axis angle 45 °,
Linear polarizer polarization direction and x-axis angle 0 °, the intensity map I (45 °, 90 °) of the fast axle of quarter wave plate and 45 °, x-axis angular separation;
Respectively nonuniformity correction is carried out to the four width plot of light intensity pictures obtained above, image registration, removal of images offsets the error brought, and the image corrected can calculate linear polarization degree, circular polarization, the polarization image such as polarization angle and ellipse drift angle of current band, and computing method are
I＝I(0°,0°)+I(90°,0°)
Q＝I(0°,0°)-I(90°,0°)
U＝2I(45°,0°)-[I(0°,0°)+I(90°,0°)]
V＝2I(45°,90°)-[I(0°,0°)+I(90°,0°)]
Linear polarization degree:
Circular polarization:
Polarization angle:
Ellipse drift angle:
Claims (6)
1. an automation equipment for compact multiband full polarization imaging, is characterized in that: comprise lens fixing bracket (1), collimation camera lens (2), electric system (3), filtering runner (4), quarter wave plate unit (107) and linear polarizer unit (108), lens fixing bracket (1) comprises opening cylinder (101), motor fixing plate (102), arc web joint (103) and rearmounted cylinder (106), opening cylinder (101) is roof opening, opening part connects two pieces of motor fixing plates be arranged in parallel (102) respectively, collimation camera lens (2) is arranged on opening cylinder (101) end of lens fixing bracket (1), opening cylinder (101) other end is connected with rearmounted cylinder (106) by arc web joint (103), opening cylinder (101) is relative with the roof openend of opening cylinder (101) with the junction of arc web joint (103), quarter wave plate unit (107) is arranged on the end that rearmounted cylinder (106) is connected with arc web joint (103), and linear polarizer unit (108) is arranged on one end that rearmounted cylinder (106) connects away from arc web joint (103), electric system (3) comprises the first stepper motor 301, second stepper motor (302) and the 3rd stepper motor (303), first stepper motor 301 is fixed by motor fixing plate (102), the motor shaft of the first stepper motor 301 is through filtering runner (4) center, filtering runner (4) is made to be positioned at arc web joint (103) top, second stepper motor (302) and the 3rd stepper motor (303) are all fixed on rearmounted cylinder (106) outer wall, the motor shaft of the second stepper motor (302) is connected with quarter wave plate unit (107), the motor shaft of the 3rd stepper motor (303) is connected with linear polarizer unit (108).
2. the automation equipment of compact multiband full polarization imaging according to claim 1, is characterized in that: above-mentioned quarter wave plate unit (107) comprises the first clamping rings (1071), the first movable annulus (1072), the first belt (1073) and quarter wave plate (1074), quarter wave plate (1074) is fixed on the first movable annulus (1072), first movable annulus (1072) is flexibly connected with the first clamping rings (1071), first belt (1073) is enclosed within the first movable annulus (1072) outer wall, and be connected with the motor shaft of the second stepper motor (302), the motor shaft of the second stepper motor (302) rotates, drive the first belt (1073) that the first movable annulus (1072) is rotated around the first clamping rings (1071), first clamping rings (1071) is fixed on one end that rearmounted cylinder (106) is connected with arc web joint (103).
3. the automation equipment of compact multiband full polarization imaging according to claim 1, it is characterized in that: above-mentioned linear polarizer unit (108) comprises the second clamping rings (1081), second movable annulus (1082), second belt (1083) and linear polarizer (1084), linear polarizer (1084) is fixed on the second movable annulus (1082), second movable annulus (1082) is flexibly connected with the second clamping rings (1081), second belt (1083) is enclosed within the second movable annulus (1082) outer wall, and be connected with the motor shaft of the 3rd stepper motor (303), the motor shaft of the 3rd stepper motor (303) rotates, drive the second belt (1083) that the second movable annulus (1082) is rotated around the second clamping rings (1081), second clamping rings (1081) is fixed on one end that rearmounted cylinder (106) connects away from arc web joint (103).
4. the automation equipment of compact multiband full polarization imaging according to claim 1, is characterized in that: above-mentioned opening cylinder (101), arc web joint (103) are all identical with the diameter of rearmounted cylinder (106).
5. the automation equipment of compact multiband full polarization imaging according to claim 1, is characterized in that: above-mentioned filtering runner (4), and along filtering runner (4) center, be uniformly distributed six filtering holes on filtering rotating disk, filtering is provided with filter plate in hole; When filtering runner (4) rotates, be positioned at the filter plate center of filtering runner (4) minimum point and collimation camera lens (2) common optical axis.
6. the automation equipment of compact multiband full polarization imaging according to claim 1, is characterized in that: above-mentioned arc web joint (103) joint face is contour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830626.5A CN104535187B (en) | 2014-12-26 | 2014-12-26 | A kind of automation equipment of compact multiband full polarization imaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830626.5A CN104535187B (en) | 2014-12-26 | 2014-12-26 | A kind of automation equipment of compact multiband full polarization imaging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104535187A true CN104535187A (en) | 2015-04-22 |
| CN104535187B CN104535187B (en) | 2016-05-04 |
Family
ID=52850762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410830626.5A Active CN104535187B (en) | 2014-12-26 | 2014-12-26 | A kind of automation equipment of compact multiband full polarization imaging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104535187B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807546A (en) * | 2015-05-09 | 2015-07-29 | 长春理工大学 | Measuring device used for research on target scattering and reflective polarization state |
| CN104833977A (en) * | 2015-05-11 | 2015-08-12 | 福州大学 | Instantaneous remote-sensing polarization imaging device based on microwave plate array and realizing method thereof |
| CN106289542A (en) * | 2016-07-26 | 2017-01-04 | 北京理工大学 | A kind of radiation correction method of preposition polaroid type infrared polarization imaging system |
| CN107764520A (en) * | 2017-10-30 | 2018-03-06 | 西安应用光学研究所 | Optical lens residual polarization test device |
| CN109186770A (en) * | 2018-09-04 | 2019-01-11 | 中国科学院光电研究院 | A kind of multi-functional hemisphere sky polarized imaging system |
| CN109188395A (en) * | 2018-07-19 | 2019-01-11 | 合肥工业大学 | A kind of full polarized fringe pipe laser imaging radar device |
| CN111856770A (en) * | 2019-04-26 | 2020-10-30 | 曹毓 | Polarization imaging equipment |
| CN113029341A (en) * | 2021-03-10 | 2021-06-25 | 西安应用光学研究所 | High-precision laser polarization characteristic measurement and calibration device |
| CN113933246A (en) * | 2021-09-27 | 2022-01-14 | 中国人民解放军陆军工程大学 | Compact multiband full-polarization imaging device compatible with F bayonet lens |
| CN114619170A (en) * | 2022-02-17 | 2022-06-14 | 毛望龙 | Intelligent monitoring device and method for welding pool imaging |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004294293A (en) * | 2003-03-27 | 2004-10-21 | Neoark Corp | Method for collectively observing and measuring optical characteristics of plurality of different samples |
| US7295312B1 (en) * | 2006-05-10 | 2007-11-13 | United States Of America As Represented By The Secretary Of The Army | Rapid 4-Stokes parameter determination via Stokes filter wheel |
| JP2009300363A (en) * | 2008-06-17 | 2009-12-24 | Anritsu Corp | Instrument for measuring ratio of light signal to noise |
| CN202974441U (en) * | 2012-07-18 | 2013-06-05 | 西北工业大学 | Miniature automatic optical filter rotating wheel multiband polarization imaging system |
| CN203203710U (en) * | 2013-04-10 | 2013-09-18 | 黄河科技学院 | Automatic detection device for polarization of light |
| CN103743485A (en) * | 2014-01-17 | 2014-04-23 | 北京航空航天大学 | Full polarization spectrum imaging system for synchronously detecting ground feature light and skylight |
| CN203587939U (en) * | 2013-11-18 | 2014-05-07 | 苏州精创光学仪器有限公司 | Wide-field compact type polarization imaging camera |
| CN204373782U (en) * | 2014-12-26 | 2015-06-03 | 中国人民解放军理工大学 | A kind of automation equipment of compact multiband full polarization imaging |
-
2014
- 2014-12-26 CN CN201410830626.5A patent/CN104535187B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004294293A (en) * | 2003-03-27 | 2004-10-21 | Neoark Corp | Method for collectively observing and measuring optical characteristics of plurality of different samples |
| US7295312B1 (en) * | 2006-05-10 | 2007-11-13 | United States Of America As Represented By The Secretary Of The Army | Rapid 4-Stokes parameter determination via Stokes filter wheel |
| JP2009300363A (en) * | 2008-06-17 | 2009-12-24 | Anritsu Corp | Instrument for measuring ratio of light signal to noise |
| CN202974441U (en) * | 2012-07-18 | 2013-06-05 | 西北工业大学 | Miniature automatic optical filter rotating wheel multiband polarization imaging system |
| CN203203710U (en) * | 2013-04-10 | 2013-09-18 | 黄河科技学院 | Automatic detection device for polarization of light |
| CN203587939U (en) * | 2013-11-18 | 2014-05-07 | 苏州精创光学仪器有限公司 | Wide-field compact type polarization imaging camera |
| CN103743485A (en) * | 2014-01-17 | 2014-04-23 | 北京航空航天大学 | Full polarization spectrum imaging system for synchronously detecting ground feature light and skylight |
| CN204373782U (en) * | 2014-12-26 | 2015-06-03 | 中国人民解放军理工大学 | A kind of automation equipment of compact multiband full polarization imaging |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807546B (en) * | 2015-05-09 | 2017-03-08 | 长春理工大学 | A kind of measurement apparatus for target scattering and reflected polarization state research |
| CN104807546A (en) * | 2015-05-09 | 2015-07-29 | 长春理工大学 | Measuring device used for research on target scattering and reflective polarization state |
| CN104833977A (en) * | 2015-05-11 | 2015-08-12 | 福州大学 | Instantaneous remote-sensing polarization imaging device based on microwave plate array and realizing method thereof |
| CN106289542A (en) * | 2016-07-26 | 2017-01-04 | 北京理工大学 | A kind of radiation correction method of preposition polaroid type infrared polarization imaging system |
| CN106289542B (en) * | 2016-07-26 | 2018-10-30 | 北京理工大学 | A kind of radiation correction method of preposition polaroid type infrared polarization imaging system |
| CN107764520A (en) * | 2017-10-30 | 2018-03-06 | 西安应用光学研究所 | Optical lens residual polarization test device |
| CN109188395A (en) * | 2018-07-19 | 2019-01-11 | 合肥工业大学 | A kind of full polarized fringe pipe laser imaging radar device |
| CN109186770A (en) * | 2018-09-04 | 2019-01-11 | 中国科学院光电研究院 | A kind of multi-functional hemisphere sky polarized imaging system |
| CN111856770A (en) * | 2019-04-26 | 2020-10-30 | 曹毓 | Polarization imaging equipment |
| CN111856770B (en) * | 2019-04-26 | 2022-07-19 | 曹毓 | Polarization imaging device |
| CN113029341A (en) * | 2021-03-10 | 2021-06-25 | 西安应用光学研究所 | High-precision laser polarization characteristic measurement and calibration device |
| CN113933246A (en) * | 2021-09-27 | 2022-01-14 | 中国人民解放军陆军工程大学 | Compact multiband full-polarization imaging device compatible with F bayonet lens |
| CN113933246B (en) * | 2021-09-27 | 2023-11-21 | 中国人民解放军陆军工程大学 | Compact multiband full-polarization imaging device compatible with F-mount lens |
| CN114619170A (en) * | 2022-02-17 | 2022-06-14 | 毛望龙 | Intelligent monitoring device and method for welding pool imaging |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104535187B (en) | 2016-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104535187A (en) | Automatic device for compact multi-band and full-polarization imaging | |
| CN204373782U (en) | A kind of automation equipment of compact multiband full polarization imaging | |
| Zhao et al. | Multi-band polarization imaging | |
| CN110440926A (en) | Time sharing mode infrared polarization imaging device and method for dynamic target measurement | |
| CN104457995B (en) | Fast polarization detector and detecting method | |
| CN211696676U (en) | Rotary spectral imaging-polarization measurement system | |
| CN202801542U (en) | Detecting device for quality performance of medical endoscope | |
| CN109632102A (en) | Infrared polarization image measuring device based on rotatory polarization piece | |
| CN102759441A (en) | Multiband polarization imaging anti-counterfeiting element identification system | |
| CN101545854A (en) | Double refraction determining apparatus and double refraction determining method | |
| CN202748301U (en) | Multiband polarization imaging anti-counterfeiting element identification system | |
| CN109443549A (en) | It is a kind of that infrared imaging system and method are promoted by Polarization Modulation | |
| CN202974441U (en) | Miniature automatic optical filter rotating wheel multiband polarization imaging system | |
| CN104766559A (en) | Color correction module | |
| CN205028554U (en) | Multi -functional polarization imaging experiment teaching aid | |
| CN104075998A (en) | Near-infrared polarization invisible anti-fake element identification system | |
| CN216012481U (en) | Compact three-band full-polarization imaging universal device | |
| CN204115867U (en) | A kind of spectral measurement device improving luminous flux | |
| CN110275154A (en) | A kind of laser radar Polarization Detection optics regulating mechanism | |
| EP3505883A1 (en) | Color filter used with liquid-crystal polarization interferometer | |
| CN102809431B (en) | Small multiband polarization imaging system with automatic filter wheel | |
| CN104931234A (en) | Device for precisely calibrating inclined angle between wave plate and polaroid, and calibration method | |
| JP5446644B2 (en) | Bonding angle measuring device for elliptical polarizing plate | |
| KR101650226B1 (en) | Optical characteristic measuring device and method | |
| CN110440920B (en) | Swinging polarizer type polarization imaging measurement device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |