CN102023133A - Multispectral hybrid fish eye imaging system for rice canopy - Google Patents
Multispectral hybrid fish eye imaging system for rice canopy Download PDFInfo
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Abstract
The invention discloses a multispectral hybrid fish eye imaging system for rice canopy, comprising two parts of a fish eye lens and an optical filter switching structure, wherein an optical structure of the fish-eye lens comprises 11 lens groups formed by 13 spectacle lenses sequentially arranged, wherein a switchable optical filter is arranged between the fifth spectacle lens and the sixth spectacle lens, and the fifth spectacle lens is a binary optical element; all of the spectacle lenses are spherical, the whole field angle of the system is 2omega equal to 180 degrees and covers a hemispherical region space in the front of the whole lens; and the system works in a visible light wave band and a near infrared wave band. Because an optical filter is switched through a dial switching structure or a structure of gear rack engagement movement, the information of multi-wave bands can be obtained by utilizing a single detector. The system has small size, light weight and automated operation and is suitable for data acquisition and analysis of outdoor rice canopy.
Description
Technical field
The present invention relates to a kind of optical technical field, relate in particular to, can realize multispectral sensing by single fish eye lens based on the multispectral hybrid imaging system of fish-eye rice canopy.
Technical background
Absorption and the reflection to the spectrum of different-waveband in the sunlight in growth course of any plant all has selectivity, especially the absorption difference near infrared light is bigger, by measuring absorption and the reflection characteristic of plant quantitatively, can make detailed analysis to vegetation growth state to every kind of wavelength.But adopt visible/near infrared light reflectance spectrum analytical technology fast measuring vegetation surface parameter, plant canopy information, plant nutrient information, soil nutrient information, environmental parameter and plant pest degree etc.Paddy rice is as the food that the Asian has the call, and developing a kind of rice canopy analytic system all has huge actual application value to aspects such as its breed improvement, the prevention and control of plant diseases, pest control and upgrowth situation monitorings.
To satisfy big field angle, wide spectral range, energy real-time analysis and volume compact to the collection of plant canopy data and be suitable for characteristics such as outdoor use.The mode of present existing plant canopy analytic system image data mainly contains the polyphaser collection and panorama type is gathered two kinds: though preceding a kind of mode has the little advantage of pattern distortion, but image needs the later stage splicing to handle, can not realize real-time collection, and overall weight is heavier, is not suitable for outdoor hand-held; The panorama type collection can be avoided this shortcoming, and volume is little, in light weight.Fish eye lens all is widely used in fields such as photography, security protection, motion picture projection and environmental monitoring as a kind of typical way of panorama type information acquisition.Adopt the system of this structure to mainly contain the LAI-2000 type plant canopy analyser of U.S. LI-COR company and the HemiView numeral plant canopy analytic system of Britain in the market: the former volume is little, hand-holdable operation, operating wavelength range is at 320～490nm, its all band filtering; The latter is the mode that fish eye lens is joined commercial digital slr camera owing to what adopt, the pixel height, but volume is bigger.The defective that these two kinds of systems exist is all to adopt fixedly optical filter, and what detector detected is the mixed information of whole wave band, can't distinguish the plant absorbing situation of single band spectrum.Fish eye lens can't can only add optical filter in certain position in light path by selecting spectrum in the mode of the outside additive filter of camera lens because its visual field is very big.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, the multispectral mixing flake of a kind of rice canopy imaging system is provided.
The objective of the invention is to be achieved through the following technical solutions:
The multispectral mixing flake of a kind of rice canopy imaging system comprises two parts of FISH EYE LENS OPTICS structure and optical filter switching construction, and the FISH EYE LENS OPTICS structure comprises 11 mirror groups of the lens composition that 13 eyeglasses are arranged in order.First lens and second lens are negative meniscus lens, all be convex surface forward; The 3rd lens are double concave lens, and the curvature absolute value is forward-facing big; The 4th lens are positive meniscus shaped lenses, and concave surface forward; The 5th lens are convexo-plane lens, and convex surface forward; Optical filter is a sheet glass; The 7th lens are positive meniscus shaped lenses, and convex surface forward; The 8th lens are positive meniscus shaped lenses, and concave surface forward; The 9th lens are negative meniscus lens, and convex surface forward; The tenth lens are biconvex lens, and the curvature absolute value is forward-facing big; The front surface gummed of the rear surface of the 9th lens and the tenth lens; The 11 lens are positive meniscus shaped lenses, and concave surface forward; The 12 lens are negative meniscus lens, and concave surface forward; The rear surface of the 11 lens and the front surface of the 12 lens gummed; The 13 lens are positive meniscus shaped lenses, and convex surface forward; The rear surface of the 5th lens is diffraction surfaces.The groove that 5 placement lens are arranged in the preceding lens barrel, first lens through hole of lens barrel front end are in the past put into the 1st groove; Second lens, the 3rd lens, the 4th lens and the 5th the lens through hole of lens barrel rear end are in the past put into successively, place the 2nd to the 5th groove; Some screws of lens barrel and filter wheel box before preceding lens barrel rear end is useful on and connects.The groove that 5 placement lens are arranged in the back lens barrel, the 7th lens and the 8th lens are put into the 1st and the 2nd groove from the front end through hole of back lens barrel; The gummed mirror group that the 9th lens the tenth lens are formed is put into the 3rd groove from lens barrel rear end, back; The gummed mirror group that the 11 lens and the 12 lens are formed is put into the 4th groove from the rear end of back lens barrel; The 13 lens are put into the 5th groove from lens barrel rear end, back; The front end of back lens barrel is useful on the some screws that connect the filter wheel box.Optical filter is fixed in the through hole of filter wheel, the filter wheel circle centre position has a screw, filter wheel is sealed in the filter wheel box, on filter wheel box and the face that the front and back lens barrel is connected some screws are arranged, corresponding with the screw on the lens barrel of front and back, play the effect of lens barrel before and after connecting, the through hole at center, filter wheel box rear surface is passed in the rotating shaft of stepper motor, and rotating shaft is stretched into this through hole and is connected with the screw at filter wheel center.
The multispectral mixing flake of a kind of rice canopy imaging system comprises two parts of FISH EYE LENS OPTICS structure and optical filter switching construction, and the FISH EYE LENS OPTICS structure comprises 11 mirror groups of the lens composition that 13 eyeglasses are arranged in order.First lens and second lens are negative meniscus lens, all be convex surface forward; The 3rd lens are double concave lens, and the curvature absolute value is forward-facing big; The 4th lens are positive meniscus shaped lenses, and concave surface forward; The 5th lens are convexo-plane lens, and convex surface forward; Optical filter is a sheet glass; The 7th lens are positive meniscus shaped lenses, and convex surface forward; The 8th lens are positive meniscus shaped lenses, and concave surface forward; The 9th lens are negative meniscus lens, and convex surface forward; The tenth lens are biconvex lens, and the curvature absolute value is forward-facing big; The front surface gummed of the rear surface of the 9th lens and the tenth lens; The 11 lens are positive meniscus shaped lenses, and concave surface forward; The 12 lens are negative meniscus lens, and concave surface forward; The rear surface of the 11 lens and the front surface of the 12 lens gummed; The 13 lens are positive meniscus shaped lenses, and convex surface forward; The rear surface of the 5th lens is diffraction surfaces.The groove that 5 placement lens are arranged in the preceding lens barrel, first lens front end through hole of lens barrel are in the past put into the 1st groove; Second lens, the 3rd lens, the 4th lens and the 5th lens the rear end through hole of lens barrel are in the past put into successively, place the 2nd to the 5th groove; Some screws of lens barrel and optical filter square box before the rear end of preceding lens barrel is useful on and connects.The groove that 5 placement lens are arranged in the back lens barrel, the 7th lens and the 8th lens are put into the 1st and the 2nd groove from the front end through hole of back lens barrel; The gummed mirror group that the 9th lens the tenth lens are formed is put into the 3rd groove from the rear end of back lens barrel; The gummed mirror group that the 11 lens and the 12 lens are formed is put into the 4th groove from the rear end of back lens barrel; The 13 lens are put into 5 grooves from the rear end of back lens barrel; Back lens barrel front end is useful on the some screws that connect the optical filter square box.Optical filter is fixed in the through hole of filter holder, filter holder hang over by its top through hole polished rod on, can be free to slide along polished rod, the polished rod two ends are fixed on two walls of optical filter square box, the filter holder top is equipped with tooth bar, is meshed with the gear that overlaps in the stepper motor rotating shaft.Filter holder, gear and tooth bar are sealed in the optical filter square box, on optical filter square box and the face that the front and back lens barrel is connected some screws are arranged, and be corresponding with the screw on the lens barrel of front and back, plays the effect of lens barrel before and after connecting.
The present invention compared with prior art has following beneficial effect:
1, added the binary optical structure in the optical system owing to having used, the system architecture compactness, system is suitable for spectral width, not only can be used for visible light wave range and detects, and also can be applicable to near-infrared band and detects, and satisfies the demand that rice canopy is detected.
2, system has the physical construction of switchable type optical filter, conveniently carries out the spectral analysis of different-waveband, is suitable for the detection of the different spectrum segments of rice canopy.
Description of drawings
Fig. 1 is the optical system ray tracing figure that comprises diffraction surfaces, and IMA is image planes;
Fig. 2 adopts rotary filter wheel to switch the longitudinal sectional drawing of spectral composition;
Fig. 3 adopts the filter wheel of rotary filter wheel switching spectral composition along the optical axis direction view, is example with the rotating disk that 4 tablet filters can be installed;
Fig. 4 is the longitudinal sectional drawing that adopts gear drive tooth bar transverse movement structure;
Fig. 5 adopts the filter holder of gear drive tooth bar transverse movement structure along the optical axis direction view, is example with the filter holder that 3 tablet filters can be installed;
Among the figure: first lens 1, second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5, optical filter 6, the 7th lens 7, the 8th lens 8, the 9th lens 9, the tenth lens the 10, the 11 lens the 11, the 12 lens the 12, the 13 lens 13, preceding lens barrel 14, back lens barrel 15, filter wheel box 16, filter wheel 17, stepper motor 18, optical filter square box 19, gear 20, tooth bar 21, polished rod 22, filter holder 23.
Embodiment
Fish eye lens design proposal of the present invention has been used 13 lens altogether, be arranged in order into 11 mirror groups, comprising two cemented doublet groups, 8 single element lens and a switchable type optical filter: two lens that are positioned at front end are negative meniscus lens in order to the light import system of big incident angle to form picture after an action of the bowels, in order to control chromatic dispersion, use the crown glass of low-refraction, low chromatic dispersion; The 3 groups of structures of using crown board and flint to replace in back are controlled aberration, and diffraction surfaces is adopted in the rear surface of the 5th lens.Be positioned at the middle part lens be thickness be 4mm K9 sheet glass in order to the simulation optical filter; Two simple lenses and two balsaming lenss of being positioned at the rear portion are used to control aberration; Last piece lens are used to control image height.The present invention all uses Chinese glass storehouse, and is spherical glass.
Because system not only will imaging in visible-range, and the near infrared light about 800nm is required good picture element too, but big visual field tends to cause optical system more serious dispersion phenomenon to occur, to the considerable influence that has of whole image quality.In order to address this problem, in system, add diffraction surfaces, its advantage be to aberration particularly the correction of aberration aspect played very big effect, realized the raising of picture element, simultaneously whole optical system has also realized miniaturization.
In order to realize the switching of optical filter, system also need reserve enough spaces before and after filtering under the prerequisite that as far as possible guarantees compact conformation.Because optical filter will shift out lens barrel in handoff procedure, therefore system is divided into two sections in the optical filter position, the front and back lens barrel connects by middle optical filter switching mechanism.For the space that guarantees that optical filter and physical construction are required, paid special attention to increase the distance of optical filter front and back in the design process.The present invention adopts two kinds of optical filter switching constructions: first kind of structure that adopts rotary filter wheel to switch spectrum: optical filter is uniformly distributed in the through hole of filter wheel, rotating disk is sealed in the filter wheel box, the control step motor rotates the drive filter wheel and rotates together, so different optical filter can cut off light path on request, realizes the information of detector detection different wave length.Second kind of structure that adopts rack-and-pinion engagement transverse movement to switch spectrum: optical filter is placed in the through hole of filter holder, can be free to slide along bar, tooth bar is equipped with at the filter holder top, when stepper motor rotates, gear in its rotating shaft rotates and drives the motion of tooth bar do perpendicular to optical axis direction, realizes the switching of different optical filters.
Below in conjunction with the accompanying drawing example, the present invention is described in further details.
Shown in Figure 1 is the optical system ray tracing figure that comprises diffraction surfaces, and first lens 1 and second lens 2 are negative meniscus lens, all be convex surface forward; The 3rd lens 3 are double concave lens, and the curvature absolute value is forward-facing big; The 4th lens 4 are positive meniscus shaped lenses, and concave surface forward; The 5th lens 5 convexo-plane lens, convex surface is forward; Optical filter 6 is a sheet glass; The 7th lens 7 are positive meniscus shaped lenses, and convex surface forward; The 8th lens 8 are positive meniscus shaped lenses, and concave surface forward; The 9th lens 9 are negative meniscus lens, and convex surface forward; The tenth lens 10 are biconvex lens, and the curvature absolute value is forward-facing big; The front surface gummed of the rear surface of the 9th lens 9 and the tenth lens 10; The 11 lens 11 are positive meniscus shaped lenses, and concave surface forward; The 12 lens 12 are negative meniscus lens, and concave surface forward; The front surface gummed of the rear surface of the 11 lens 11 and the 12 lens 12; The 13 lens 13 are positive meniscus shaped lenses, and convex surface forward; The rear surface of the 5th lens 5 is diffraction surfaces.As shown in Figure 1, marginal ray enters negative meniscus first lens 1 from the half field-of-view's direction perpendicular to 90 ° on optical axis, through all the other all lens refractions, finally images on the CCD/CMOS detector of IMA again.Optical filter 6 is a K9 sheet glass, can move forward and backward the position in light path, can not influence the quality of imaging.Because incident angle is bigger, is easy to generate aberration on the image planes, therefore on the rear surface planar substrates of the 5th lens 5, made the binary optical face, this diffraction surfaces can be controlled aberration preferably, also plays the effect of the length that reduces overall optical system simultaneously.Length of the present invention can be controlled in the 70mm.
On the basis of Fig. 1 optical system, lens barrel structure before and after having designed, and the embodiment of two kinds of optical filter switching constructions.Fig. 2 and Fig. 4 adopt rotary filter wheel to switch the structure of spectrum and the structure of gear drive tooth bar transverse movement respectively, all adopt stepper motor as power resources, introduce the characteristics and the scope of application of these two kinds of forms below respectively.
Figure 2 shows that embodiment of the present invention 1, system adopts rotary filter wheel to switch the structure of spectrum.Optical filter 6 is fixed in the through hole of filter wheel 17, filter wheel 17 circle centre positions have a screw, filter wheel 17 is sealed in the filter wheel box 16, on filter wheel box 16 and the face that the front and back lens barrel is connected some screws are arranged, corresponding with the screw on the lens barrel of front and back, play the effect of lens barrel before and after connecting, the through hole at center, filter wheel box 16 rear surface is passed in stepper motor 18 rotating shafts, and rotating shaft is stretched into this through hole and is connected with the screw at filter wheel 17 centers.Stepper motor 18 drives filter wheel 17 and rotates when rotating, realize the switching of different wave length optical filter.Stepper motor 18 can be controlled automatically with chip microcontroller.
In the present embodiment, optical filter is distributed in the through hole of filter wheel 17 equably.As shown in Figure 3, with the filter wheel 17 that can place four optical filters is example, the size of filter wheel 17 is by the quantity of optical filter and the diameter decision of optical filter, its diameter increases along with increasing of optical filter quantity on the filter wheel 17, need the bigger stepper motor of moment of torsion 18 to drive this moment, the advantage of this structure is that control is simple, and the optical filter that can lay is many.The optical filter number is fit to adopt this rotary-disk type structure more for a long time.
Figure 4 shows that embodiment of the present invention 2, system adopts the structure of gear drive tooth bar transverse movement.Optical filter 6 is fixed in the through hole of filter holder 23, filter holder 23 hang over by its top through hole polished rod 22 on, can be free to slide along polished rod 22, polished rod 22 two ends are fixed on two walls of optical filter square box 19, filter holder 23 tops are equipped with tooth bar 21, are meshed with the gear 20 that overlaps in stepper motor 18 rotating shafts.Filter holder 23, gear 20 and tooth bar 21 are sealed in the optical filter square box 19, on optical filter square box 19 and the face that the front and back lens barrel is connected some screws are arranged, and be corresponding with the screw on the lens barrel of front and back, plays the effect of lens barrel before and after connecting.When driven gear 20 rotated when stepper motor 18 rotated, the tooth bar 21 that is engaged with was done perpendicular to the vertical switching between the motion realization different wave length optical filter of optical axis direction.Stepper motor 18 can be controlled automatically with chip microcontroller.
In the present embodiment, optical filter is equably in the through hole of range of distribution filter holder 23.As shown in Figure 5, with the filter holder 23 that can place three optical filters is example, the size of filter holder 23 increases along with the increase of optical filter diameter and increasing of quantity, needs the bigger stepper motor of moment of torsion 18 to drive this moment, and the advantage of this structure is that volume is little, switch speed is fast.The optical filter number is fit to adopt the structure of this rack-and-pinion engagement more after a little while.
Claims (6)
1. the multispectral mixing flake of a rice canopy imaging system comprises two parts of FISH EYE LENS OPTICS structure and optical filter switching construction.The FISH EYE LENS OPTICS structure comprises 11 mirror groups of the lens composition that 13 eyeglasses are arranged in order.It is characterized in that: first lens (1) and second lens (2) are the negative meniscus lens, all be convex surface forward; The 3rd lens (3) are the double concave lens, and the curvature absolute value is forward-facing big; The 4th lens (4) are positive meniscus shaped lenses, and concave surface forward; The 5th lens (5) are the convexo-plane lens, and convex surface forward; Optical filter (6) is a sheet glass; The 7th lens (7) are positive meniscus shaped lenses, and convex surface forward; The 8th lens (8) are positive meniscus shaped lenses, and concave surface forward; The 9th lens (9) are the negative meniscus lens, and convex surface forward; The tenth lens (10) are biconvex lens, and the curvature absolute value is forward-facing big; The front surface gummed of the rear surface of the 9th lens (9) and the tenth lens (10); The 11 lens (11) are positive meniscus shaped lenses, and concave surface forward; The 12 lens (12) are the negative meniscus lens, and concave surface forward; The rear surface of the 11 lens (11) and the front surface of the 12 lens (12) gummed; The 13 lens (13) are positive meniscus shaped lenses, and convex surface forward; The rear surface of the 5th lens (5) is a diffraction surfaces.The groove that 5 placement lens are arranged in the preceding lens barrel (14), first lens (1) through hole of lens barrel (14) front end are in the past put into the 1st groove; Second lens (2), the 3rd lens (3), the 4th lens (4) and the 5th lens (5) through hole of lens barrel (14) rear end are in the past put into successively, place the 2nd to the 5th groove; Some screws of lens barrel (14) and filter wheel box (16) before preceding lens barrel (14) rear end is useful on and connects.The groove that 5 placement lens are arranged in the back lens barrel (15), the 7th lens (7) and the 8th lens (8) are put into the 1st and the 2nd groove from the front end through hole of back lens barrel (15); The gummed mirror group that the 9th lens (9) the tenth lens (10) are formed is put into the 3rd groove from lens barrel (15) rear end, back; The gummed mirror group that the 11 lens (11) and the 12 lens (12) are formed is put into the 4th groove from the rear end of back lens barrel (15); The 13 lens (13) are put into the 5th groove from lens barrel (15) rear end, back; The front end of back lens barrel (15) is useful on the some screws that connect filter wheel box (16).Optical filter (6) is fixed in the through hole of filter wheel (17), filter wheel (17) circle centre position has a screw, filter wheel (17) is sealed in the filter wheel box (16), on filter wheel box (16) and the face that the front and back lens barrel is connected some screws are arranged, corresponding with the screw on the lens barrel of front and back, play the effect of lens barrel before and after connecting, the through hole at filter wheel box (16) center, rear surface is passed in the rotating shaft of stepper motor (18), and rotating shaft is stretched into this through hole and is connected with the screw at filter wheel (17) center.
2. the multispectral mixing flake of a kind of rice canopy according to claim 1 imaging system, it is characterized in that: optical system has added diffraction surfaces on the 5th lens (5) rear surface, played the effect that has reduced chromatic dispersion, make optical system in from the visible light to the near infrared range, all can reach good picture element, also reduced the size of system simultaneously.
3. the multispectral mixing flake of a kind of rice canopy according to claim 1 imaging system is characterized in that, can drive the rotation of filter wheel (17) by the rotation of control step motor (18), realizes the automatic switchover between the different wave length optical filter.
4. the multispectral mixing flake of a rice canopy imaging system comprises two parts of FISH EYE LENS OPTICS structure and optical filter switching construction.The FISH EYE LENS OPTICS structure comprises that 11 mirror groups that lens that 13 eyeglasses are arranged in order are formed is characterized in that: first lens (1) and second lens (2) are the negative meniscus lens, all be convex surface forward; The 3rd lens (3) are the double concave lens, and the curvature absolute value is forward-facing big; The 4th lens (4) are positive meniscus shaped lenses, and concave surface forward; The 5th lens (5) are the convexo-plane lens, and convex surface forward; Optical filter (6) is a sheet glass; The 7th lens (7) are positive meniscus shaped lenses, and convex surface forward; The 8th lens (8) are positive meniscus shaped lenses, and concave surface forward; The 9th lens (9) are the negative meniscus lens, and convex surface forward; The tenth lens (10) are biconvex lens, and the curvature absolute value is forward-facing big; The front surface gummed of the rear surface of the 9th lens (9) and the tenth lens (10); The 11 lens (11) are positive meniscus shaped lenses, and concave surface forward; The 12 lens (12) are the negative meniscus lens, and concave surface forward; The rear surface of the 11 lens (11) and the front surface of the 12 lens (12) gummed; The 13 lens (13) are positive meniscus shaped lenses, and convex surface forward; The rear surface of the 5th lens (5) is a diffraction surfaces.The groove that 5 placement lens are arranged in the preceding lens barrel (14), first lens (1) the front end through hole of lens barrels (14) are in the past put into the 1st groove; Second lens (2), the 3rd lens (3), the 4th lens (4) and the 5th lens (5) the rear end through hole of lens barrel (14) are in the past put into successively, place the 2nd to the 5th groove; Some screws of lens barrel (14) and optical filter square box (19) before the rear end of preceding lens barrel (14) is useful on and connects.The groove that 5 placement lens are arranged in the back lens barrel (15), the 7th lens (7) and the 8th lens (8) are put into the 1st and the 2nd groove from the front end through hole of back lens barrel (15); The gummed mirror group that the 9th lens (9) the tenth lens (10) are formed is put into the 3rd groove from the rear end of back lens barrel (15); The gummed mirror group that the 11 lens (11) and the 12 lens (12) are formed is put into the 4th groove from the rear end of back lens barrel (15); The 13 lens (13) are put into 5 grooves from the rear end of back lens barrel (15); Back lens barrel (15) front end is useful on the some screws that connect optical filter square box (19).Optical filter (6) is fixed in the through hole of filter holder (23), filter holder (23) hang over by its top through hole polished rod (22) on, can be free to slide along polished rod (22), polished rod (22) two ends are fixed on two walls of optical filter square box (19), filter holder (23) top is equipped with tooth bar (21), is meshed with the gear (20) that overlaps in stepper motor (18) rotating shaft.Filter holder (23), gear (20) and tooth bar (21) are sealed in the optical filter square box (19), on optical filter square box (19) and the face that the front and back lens barrel is connected some screws are arranged, and be corresponding with the screw on the lens barrel of front and back, plays the effect of lens barrel before and after connecting.
5. the multispectral mixing flake of a kind of rice canopy according to claim 4 imaging system, it is characterized in that, optical system has added diffraction surfaces on the 5th lens (5) rear surface, played the effect that has reduced chromatic dispersion, make optical system in from the visible light to the near infrared range, all can reach good picture element, also reduced the size of system simultaneously.
6. the multispectral mixing flake of a kind of rice canopy according to claim 4 imaging system, it is characterized in that, rotation by stepper motor on the control rotating shaft (18), driven gear (20) rotates, gear (20) drives tooth bar (21) again and does to realize the automatic switchover between the different wave length optical filter perpendicular to the optical axis direction motion.
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| CN104965293A (en) * | 2015-05-22 | 2015-10-07 | 上海理鑫光学科技有限公司 | Optical lens for eliminating chromatic aberration by using diffraction surface |
| CN106998416A (en) * | 2017-03-03 | 2017-08-01 | 中国科学院遥感与数字地球研究所 | Image picking-up apparatus and image processing system |
| CN107917762A (en) * | 2017-12-15 | 2018-04-17 | 广州飒特红外股份有限公司 | Thermal infrared imager and its menu selecting method |
| CN110376701A (en) * | 2019-08-05 | 2019-10-25 | 舜宇光学(中山)有限公司 | Automatic zoom camera lens |
| CN111929800A (en) * | 2020-08-14 | 2020-11-13 | 西安应用光学研究所 | Multi-channel continuous zooming camera device suitable for airborne multispectral reconnaissance equipment |
| CN111965925A (en) * | 2020-09-04 | 2020-11-20 | 福州威泰思光电科技有限公司 | Light filter auto-change over device convenient to installation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006091480A (en) * | 2004-09-24 | 2006-04-06 | Fujinon Corp | Zoom lens and projection type display apparatus using the same |
| JP2006113446A (en) * | 2004-10-18 | 2006-04-27 | Canon Inc | Projection optical system and image projection device |
| CN1826520A (en) * | 2003-07-23 | 2006-08-30 | 伊斯曼柯达公司 | Imaging system using combined dichroic/high-pass filters |
| CN100538289C (en) * | 2007-09-30 | 2009-09-09 | 中国科学院安徽光学精密机械研究所 | Differential absorption spectrometer import optic block |
| CN201867249U (en) * | 2010-10-15 | 2011-06-15 | 浙江大学 | Multispectral hybrid fisheye imaging system for rice canopy |
-
2010
- 2010-10-15 CN CN 201010508920 patent/CN102023133A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1826520A (en) * | 2003-07-23 | 2006-08-30 | 伊斯曼柯达公司 | Imaging system using combined dichroic/high-pass filters |
| JP2006091480A (en) * | 2004-09-24 | 2006-04-06 | Fujinon Corp | Zoom lens and projection type display apparatus using the same |
| JP2006113446A (en) * | 2004-10-18 | 2006-04-27 | Canon Inc | Projection optical system and image projection device |
| CN100538289C (en) * | 2007-09-30 | 2009-09-09 | 中国科学院安徽光学精密机械研究所 | Differential absorption spectrometer import optic block |
| CN201867249U (en) * | 2010-10-15 | 2011-06-15 | 浙江大学 | Multispectral hybrid fisheye imaging system for rice canopy |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965293A (en) * | 2015-05-22 | 2015-10-07 | 上海理鑫光学科技有限公司 | Optical lens for eliminating chromatic aberration by using diffraction surface |
| CN106998416A (en) * | 2017-03-03 | 2017-08-01 | 中国科学院遥感与数字地球研究所 | Image picking-up apparatus and image processing system |
| CN107917762A (en) * | 2017-12-15 | 2018-04-17 | 广州飒特红外股份有限公司 | Thermal infrared imager and its menu selecting method |
| CN110376701A (en) * | 2019-08-05 | 2019-10-25 | 舜宇光学(中山)有限公司 | Automatic zoom camera lens |
| CN111929800A (en) * | 2020-08-14 | 2020-11-13 | 西安应用光学研究所 | Multi-channel continuous zooming camera device suitable for airborne multispectral reconnaissance equipment |
| CN111929800B (en) * | 2020-08-14 | 2022-07-08 | 西安应用光学研究所 | Multi-channel continuous zooming camera device suitable for airborne multispectral reconnaissance equipment |
| CN111965925A (en) * | 2020-09-04 | 2020-11-20 | 福州威泰思光电科技有限公司 | Light filter auto-change over device convenient to installation |
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