CN101414033A - Optical fiber line array digital element, device and imaging method thereof - Google Patents
Optical fiber line array digital element, device and imaging method thereof Download PDFInfo
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- CN101414033A CN101414033A CNA200810219509XA CN200810219509A CN101414033A CN 101414033 A CN101414033 A CN 101414033A CN A200810219509X A CNA200810219509X A CN A200810219509XA CN 200810219509 A CN200810219509 A CN 200810219509A CN 101414033 A CN101414033 A CN 101414033A
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Abstract
The invention provides an optical fiber linear array digital element and an optical fiber linear array digital device and an imaging method thereof, wherein, the optical fiber linear array digital element comprises an image guide fiber element and a linear array photoelectric device, image guide fibers in the image guide fiber element are arranged in sequence, an end face of the receiving end of the image guide fiber element is a plane or a curved surface, an end face of the output end is closely coupled with a photosensitive surface of a linear array photoelectric device by a lens or directly coupled with the photosensitive surface; a large optical fiber linear array digital device consists of a plurality of optical fiber linear array digital elements and can be used for scanning imaging or position imaging, various image guide fiber elements are arranged in sequence, various receiving end of the image guide fiber elements are connected in sequence to form a combined receiving end of the large optical fiber linear array digital device, and the scanning sequence of various linear array photoelectric devices corresponds to the array arrangement sequence of the image guide fibers. The large optical fiber linear array digital device has a conveniently realized structure and excellent cost performance, can be used as an image sensor in aerospace remote sensing and can also be used for reading characters and graphics and precision dimension detecting.
Description
Technical field
The present invention relates to fibre optic image transmission and digital imaging technology field, be specifically related to optical fiber line array digital element, device and formation method thereof.
Background technology
The array focal plane device, be used widely in fields such as digital camera/shooting, image scanning, Aero-Space remote sensing and track and localization as CCD and CMOS digital image-forming device, focal plane imaging size of devices, spatial resolution, temporal resolution, signal to noise ratio (S/N ratio) etc. are its most important applications parameters.Image transmission optical fibre is that the optical fiber monofilament is arranged according to the order of sequence, realizes a kind of optical element of image transmission, is effectively used in night vision device, medical/industrial endoscope, special optical system.
For some big visual field linear array scanning optical systems, need the more digital device of the more high-resolution linear array of large scale, when pixel number when big (as greater than 10000 pixels), directly adopt the large-sized linear array photoelectric device of high pixel, cost can be very high, adopts prior art and method to realize also having big difficulty simultaneously.Therefore it is just very necessary for the digital device of the linear array that obtains high pixel to develop the novel combination type structure.
The image transmission optical fibre element is used in combination with the array focal plane device, can constitute many new fiber count code systems: A.R.Faruqi (Nuclear Instruments ﹠amp in 2002; Methods in PhsicalResearch, 2002,477 (1-3): 137-142) propose to use 2 * 2 image transmission optical fibre awls and 2 * 2 schemes that the area array CCD detector set is synthesized big focal plane fiber count code element parts, it has also obtained effective raising in the while resolution that enlarges the visual field; Shanghai Inst. of Technical Physics, Chinese Academy of Sciences proposed to utilize the optical fiber inverting element that the optical fiber of line arrangement is converted into the optical fiber that the face battle array is arranged in 2004, use a planar array photoelectric device to receive then, realize the scheme (P200410089452.8) of big linear field and high pixel request; South China Polytechnics had proposed a kind of digital location of big visual field one dimension camera lens (P200620058503.5) that utilizes packaged lens, image transmission optical fibre plate and line array CCD combination in 2006, can be used for the plane positioning of electronic whiteboard in ± 45 ° of scopes.2005 Japanese CANON KK (KANO) a kind of ball-type lens arrangement (application number JP2005338341-A that is used for digital vedio recording/projection is disclosed, NEGISHIM, " Wide angle lens apparatus forcamera; has image surface converter having optical fibres havinglongitudinal direction corresponding to center of ball lens "), its system has used the image transmission optical fibre awl that has concave spherical surface to proofread and correct the image planes curvature of field, and the image quality that makes the outer and axle of system's axle go up point is guaranteed; Prior art is to obtain big visual field and good picture element by the combination that utilizes image transmission optical fibre plate and digital device and optical lens.
In image transmission optical fibre plate and photoelectric array device applied in any combination in the past, the effect of image transmission optical fibre plate also is used for the curvature of field aberration of correcting optical system often.Above-mentioned first kind of fiber count code structure and technology adopt 2 * 2 identical optical tapers to realize the large scale focal plane device, it is applied to the expansion of face battle array is effective (other technologies are used for improving picture element more), but this method is very high to the consistance and the splicing accuracy requirement of image transmission optical fibre awl in the specific implementation, generally be used to stare the surface imaging optical system, way is to be combined into large-sized focal plane device by a plurality of image transmission optical fibre awls and a plurality of the digital devices of battle array, but it is very difficult that high-precision image transmission optical fibre awl is made, cause its consistance to be difficult to be guaranteed and cost high, when this structure also also inapplicable during as large-sized one dimension focal plane linear array device.Second method utilizes the optical fiber conversion element to realize utilizing the digital device of face battle array to realize the digital device of large scale linear array, but in specific implementation, face battle array device requires height with accurate butt joint of face battle array optical fiber, easily produce bigger background miscellaneous light during coupling, image transmission optical fibre is arranged also more complicated, because the difference of conversion fiber lengths can cause the inhomogeneous of image planes brightness.
Summary of the invention
The objective of the invention is to overcome the shortcoming and defect of above-mentioned prior art, the optical fiber line array digital element spare that a kind of making, more succinct, the high conformity of coupling is provided and is convenient to install.
Another purpose of invention is to provide a kind of digital device of large-scale optical fiber linear array that adopts above-mentioned optical fiber line array digital element spare, the high pixel of the digital device of this large-scale optical fiber linear array, large scale, low cost and be easy to realization.
A further object of the present invention is to provide the formation method of the digital device of above-mentioned large-scale optical fiber linear array.
Purpose of the present invention realizes by following technology side: optical fiber line array digital element spare comprises 1 image transmission optical fibre element and 1 linear array photoelectric device, wherein, image transmission optical fibre in the image transmission optical fibre element is arranged according to the order of sequence, and the end face of image transmission optical fibre element receiving end can be the plane, also can be curved surface; The end face of image transmission optical fibre element output terminal can be directly and the photosurface of linear array photoelectric device connect airtight coupling, also can scioptics and the photosurface coupling of linear array photoelectric device.
It can be that the monofilament linear array is arranged that image transmission optical fibre in the described image transmission optical fibre element is arranged according to the order of sequence, also can be the multifilament arrayed.
This optical fiber line array digital element part also comprises the retaining element that is used for fixing the image transmission optical fibre element, and this retaining element can guarantee that the locus of image transmission optical fibre element is constant, and this retaining element is made by materials such as resin, plastic cement, pottery or glass.
For realizing the present invention better, the needs that can use according to reality, described image transmission optical fibre element is keeping under the constant situation of receiving end, output terminal optical fiber arrangements order, and an angle X is reversed at two ends relatively, or angle Y of the whole bending of image transmission optical fibre element.The selection of X, Y so that the linear array photoelectric device be installed as purpose, the preferable range of X, Y is 45 °-90 ° here, generally speaking, X, Y all elect 90 ° as.
The digital device of the large-scale optical fiber linear array that adopts above-mentioned optical fiber line array digital element spare to form, comprise a plurality of optical fiber line array digital element spares, wherein, each image transmission optical fibre element is arranged according to the order of sequence, the receiving end of each image transmission optical fibre element serial in turn connects airtight and connects into the combined reception end that a linear array promptly constitutes the digital device of large-scale optical fiber linear array, and the electric driven sweep order of each linear array photoelectric device is corresponding with the array ordering of image transmission optical fibre.
In each optical fiber line array digital element spare of the digital device of described large-scale optical fiber linear array, the length of each image transmission optical fibre element is identical, to guarantee the homogeneity of output image planes.
The formation method of the digital device of above-mentioned large-scale optical fiber linear array comprises the steps:
(1) end face of the combined reception end of the digital device of large-scale optical fiber linear array is installed on the focal plane of an image-forming objective lens and constitutes the one-dimensional scanning imaging system, each linear array photoelectric device is connected with data handling system by signal wire;
(2) on the end face of the combined reception end of the digital device of large-scale optical fiber linear array, image is decomposed into corresponding a plurality of linear array signal to image-forming objective lens behind a plurality of image transmission optical fibre elements with the one dimension image projection of thing;
(3) a plurality of linear array signals are read after being received by a plurality of linear array photoelectric device couplings respectively fast, and connect reduction, reach digital processing system by signal wire then and obtain the output of one dimension image;
When vertical moving is done with respect to the end face of the combined reception end of the digital device of large-scale optical fiber linear array in the projecting plane of thing, just can obtain the complete two dimensional image of thing.
The present invention has following advantage and effect with respect to prior art:
(1) coupling of image transmission optical fibre in the optical fiber line array digital element spare of the present invention and linear array photoelectric device seems more simple, by crooked or distortion image transmission optical fibre element, realizes the installation and the coupling of the photosensitive unit of the digital device of image transmission optical fibre and linear array easily;
(2) the image transmission optical fibre element of optical fiber line array digital element spare of the present invention uses the retaining element of materials formations such as plastic cement, glass, pottery or glass to fix, and can keep the present invention to have good stable and good optical shop characteristic;
(3) the digital device of being made up of optical fiber line array digital element spare of the present invention of large-scale optical fiber linear array adopts a plurality of optical fiber line array digital element spare combinations, has realized the digital device architecture of low-cost large-sized linear array, and has reached higher precision.The electric driven sweep order of each linear array photoelectric device is corresponding with the array ordering of image transmission optical fibre, suppose that the digital device of large-scale optical fiber linear array of the present invention has a N optical fiber line array digital element spare, if the pixel of each optical fiber line array digital element spare is M, then the pixel of the digital device of the large-scale optical fiber linear array of being made up of a N optical fiber line array digital element spare reaches as high as N * M.For example, if the photoelectric device of employed single optical fiber line array digital element spare is the CCD element of 1024 pixels, when adopting 10 such fiber linear array photovalves to make up, can obtain pixel up to the digital device of the large-scale optical fiber linear array of 10K, the resolution of scanning camera is improved greatly;
(4) the digital device of forming by the present invention of large-scale optical fiber linear array, adopt a plurality of optical fiber line array digital element spares to form high pixel, the digital device of large-sized modular fiber optic linear array, with to adopt conversion linear array image transmission optical fibre element arrangements in the existing system be face battle array optical fiber arrangements and compared by the planar array photoelectric device receive mode, the linear array size expansion is good, because the image transmission optical fibre of the image transmission optical fibre element among the present invention is shorter and length is identical, system's transmitance height, high conformity, avoided the transmission distortion of imaging intensity, background noise effectively reduces;
(5) the digital device of forming by the present invention of large-scale optical fiber linear array, the end face global design of the digital device combined reception of large-scale optical fiber linear array end can be processed into particular curvature (as sphere) face type, can the local influence of eliminating the curvature of field and astigmatism, reduce the design difficulty of image-forming objective lens in the scanning system, simplified structure, the image quality and the reliability of raising system;
(6) the digital device of forming by the present invention of large-scale optical fiber linear array, its difficulty of processing and manufacturing cost effectively reduce, and each image transmission optical fibre leement duration is identical, and the image transmission optical fibre element is made simple, and technological requirement is also lower.
Description of drawings
Fig. 1 is the structural representation of optical fiber line array digital element spare of the present invention;
Fig. 2 is a kind of version synoptic diagram of the digital device of large-scale optical fiber linear array be made up of the present invention;
Fig. 3 is the formation method synoptic diagram of the digital device of large-scale optical fiber linear array be made up of the present invention;
Fig. 4 is the another kind of version synoptic diagram of the digital device of large-scale optical fiber linear array be made up of the present invention;
Fig. 5 is two kinds of fibre optic image transmission component space structures of the present invention and forming process synoptic diagram.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, optical fiber line array digital element spare of the present invention comprises 1 image transmission optical fibre element (1) and 1 linear array photoelectric device (3), and wherein, the image transmission optical fibre in the image transmission optical fibre element (1) is arranged according to the order of sequence, the end face of the receiving end of image transmission optical fibre element (1) can be the plane, also can be curved surface; The end face of image transmission optical fibre element (1) output terminal can be directly and the photosurface of linear array photoelectric device (3) connect airtight coupling, also can scioptics and the photosurface coupling of linear array photoelectric device (3).
Optical fiber line array digital element spare of the present invention can also comprise the retaining element that is used for fixing image transmission optical fibre element (1), this retaining element is used for fixing the space structure of optical fiber, the locus that can guarantee image transmission optical fibre element (1) is constant, and this retaining element is made by materials such as resin, plastic cement, pottery or glass.
The needs that can use according to reality, described image transmission optical fibre element (1) is keeping under the constant situation of receiving end, output terminal optical fiber arrangements order, and an angle X is reversed at two ends relatively, and just an angle X is reversed at the image transmission optical fibre middle part;
Or described image transmission optical fibre element (1) is keeping under the constant situation of receiving end, output terminal optical fiber arrangements order angle Y of the whole bending of image transmission optical fibre element (1), angle Y of image transmission optical fibre bending just.
The selection of different X, Y so that linear array photoelectric device (3) be installed as purpose, the preferable range of X, Y is 45 °-90 ° here, general X, Y all elect 90 ° as.
It can be that the monofilament linear array is arranged that image transmission optical fibre in the described image transmission optical fibre element (1) is arranged, and also can be the multifilament arrayed.
As shown in Figure 2, adopt the digital device of large-scale optical fiber linear array of above-mentioned optical fiber line array digital device, comprise a plurality of optical fiber line array digital element spares.Wherein, (2) be retaining element, each image transmission optical fibre element (1) is arranged according to the order of sequence, the receiving end (A) of each image transmission optical fibre element (1) connects into the combined reception end that a linear array is the digital device of large-scale optical fiber linear array in turn, and the electric driven sweep order of each linear array photoelectric device (3) is corresponding with the array ordering of image transmission optical fibre.
In each optical fiber line array digital device of the digital device of described large-scale optical fiber linear array, the length of each image transmission optical fibre element (1) is identical, to guarantee the homogeneity of output image planes.
The formation method of the digital device of above-mentioned large-scale optical fiber linear array comprises the steps:
1, as shown in Figure 3, the end face of the combined reception end of the digital device of large-scale optical fiber linear array is installed on the focal plane of an image-forming objective lens (4) and constitutes the one-dimensional scanning imaging system, each linear array photoelectric device (3) is connected with data handling system by signal wire, the end face of described each receiving end (A) all is made into curved surface, be used to compensate corresponding curvature of field aberration, be simplified to the picture objective lens arrangement;
2, on the end face of the combined reception end of the digital device of large-scale optical fiber linear array, image is decomposed into corresponding a plurality of linear array signal to image-forming objective lens behind a plurality of image transmission optical fibre elements (1) with the image projection of one dimension thing (B);
3, a plurality of linear array signals are read after being received by a plurality of linear array photoelectric devices (3) coupling respectively fast, and connect reduction, reach digital processing system by signal wire then;
When the projecting plane of thing is an object plane (5) when doing vertical moving with respect to the end face of the combined reception end of the digital device of large-scale optical fiber linear array, just can obtain the complete two dimensional image of thing.
Fig. 4 illustrates the another kind of form that the digital device of large-scale optical fiber linear array is applied to constitute the one-dimensional scanning imaging system, same Fig. 2 of principle that this one-dimensional scanning imaging system is used.Its with respect to one-dimensional scanning imaging system shown in Figure 2 structurally difference be: the receiving end (A) of employed each image transmission optical fibre element (1) all bends towards both sides successively, the longitudinal size of the digital device of whole large-scale optical fiber linear array reduces, and the digital device of whole large-scale optical fiber linear array illustrated in Figure 2 is that lateral dimension is less.
Fig. 5 shows two kinds of image transmission optical fibre component space structures and forming process.Wherein, among Fig. 5-1, the two ends of image transmission optical fibre element are mutually orthogonal; Among Fig. 5-2, two ends are parallel, the whole angle Y of bending of image transmission optical fibre element (Y is 90 °) forms one and is convenient to the particular space structure that the array photoelectric device is installed.
The digital device of this large-scale optical fiber linear array adopts a plurality of optical fiber line array digital element spares of the present invention to form, image transmission optical fibre element, linear array photoelectric device in each optical fiber line array digital element spare can independently be made, assemble afterwards, realize the optical fiber line array digital device architecture, be applicable to big visual field scanning imaging or large scale detection range.
The digital element of novel optical fiber linear array provided by the invention can make the application corresponding system architecture simplify or be convenient to photoelectric device and install, and difficulty of processing and cost reduce, and resolution effectively improves.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (9)
1, optical fiber line array digital element spare is characterized in that: comprise 1 image transmission optical fibre element and 1 linear array photoelectric device, wherein, the image transmission optical fibre in the image transmission optical fibre element is arranged according to the order of sequence, and the end face of image transmission optical fibre element receiving end is plane or curved surface; The end face of image transmission optical fibre element output terminal photosurface direct and the linear array photoelectric device connects airtight coupling, or the coupling of the photosurface of scioptics and linear array photoelectric device.
2, optical fiber line array digital device element according to claim 1, it is characterized in that: described image transmission optical fibre element is keeping under the constant situation of receiving end, output terminal optical fiber arrangements order, an angle X is reversed at two ends relatively, and the preferable range of X is 45 °-90 °.
3, optical fiber line array digital device element according to claim 1, it is characterized in that: described image transmission optical fibre element is keeping under the constant situation of receiving end, output terminal optical fiber arrangements order, angle Y of the whole bending of image transmission optical fibre element, the preferable range of Y is 45 °-90 °.
4, optical fiber line array digital device element according to claim 1 is characterized in that: the image transmission optical fibre in the described image transmission optical fibre element is arranged as the monofilament linear array and arranges or the multifilament arrayed.
5, optical fiber line array digital device element according to claim 1 is characterized in that: also comprise the retaining element that is used for fixing the image transmission optical fibre element.
6, optical fiber line array digital device element according to claim 5, it is characterized in that: described retaining element is made by resin, plastic cement, pottery or glass.
7, adopt the described digital device of large-scale optical fiber linear array that forms by a plurality of optical fiber line array digital device elements combination of claim 1 to 6, it is characterized in that: comprise a plurality of optical fiber line array digital element spares, wherein, each image transmission optical fibre element is arranged according to the order of sequence, the receiving end of each image transmission optical fibre element serial in turn connects airtight and connects into the combined reception end that a linear array promptly constitutes the digital device of large-scale optical fiber linear array, and the electric driven sweep order of each linear array photoelectric device is corresponding with the array ordering of image transmission optical fibre.
8, the digital device of large-scale optical fiber linear array according to claim 7, it is characterized in that: the length of each image transmission optical fibre element of the digital device of described large-scale optical fiber linear array is identical.
9, a peacekeeping two-dimensional imaging method of the digital device of large-scale optical fiber linear array according to claim 7 is characterized in that: comprise the steps:
(1) end face of the combined reception end of the digital device of large-scale optical fiber linear array is installed on the focal plane of an image-forming objective lens and constitutes the one-dimensional scanning imaging system, each linear array photoelectric device is connected with data handling system by signal wire;
(2) on the end face of the combined reception end of the digital device of large-scale optical fiber linear array, image is decomposed into corresponding a plurality of linear array signal to image-forming objective lens behind a plurality of image transmission optical fibre elements with the one dimension image projection of thing;
(3) a plurality of linear array signals are read after being received by a plurality of linear array photoelectric device couplings respectively fast, and connect reduction, reach digital processing system by signal wire then and obtain the output of one dimension image;
When vertical moving is done with respect to the end face of the combined reception end of the digital device of large-scale optical fiber linear array in the projecting plane of thing, just obtain the complete two dimensional image of thing.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103151232A (en) * | 2013-03-08 | 2013-06-12 | 中国人民解放军南京军区福州总医院 | Digital imaging method and device of transmission electron microscope coupled with side-mounted optical fiber |
| CN104796631A (en) * | 2014-01-16 | 2015-07-22 | 宝山钢铁股份有限公司 | Surface flattening imaging device and surface flattening imaging method |
| CN105301578A (en) * | 2015-12-05 | 2016-02-03 | 中国航空工业集团公司洛阳电光设备研究所 | Laser reception debugging method and apparatus |
| CN110769247A (en) * | 2019-11-07 | 2020-02-07 | 上海集成电路研发中心有限公司 | Image sensor testing jig and testing method |
| CN111580213A (en) * | 2020-06-18 | 2020-08-25 | 中国建筑材料科学研究总院有限公司 | Double-straight-area curved optical fiber cone and application thereof |
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2008
- 2008-11-28 CN CN200810219509XA patent/CN101414033B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103151232A (en) * | 2013-03-08 | 2013-06-12 | 中国人民解放军南京军区福州总医院 | Digital imaging method and device of transmission electron microscope coupled with side-mounted optical fiber |
| CN103151232B (en) * | 2013-03-08 | 2015-10-14 | 中国人民解放军南京军区福州总医院 | A kind of side dress coupling fiber transmission electron microscope digital imaging method and device thereof |
| CN104796631A (en) * | 2014-01-16 | 2015-07-22 | 宝山钢铁股份有限公司 | Surface flattening imaging device and surface flattening imaging method |
| CN105301578A (en) * | 2015-12-05 | 2016-02-03 | 中国航空工业集团公司洛阳电光设备研究所 | Laser reception debugging method and apparatus |
| CN105301578B (en) * | 2015-12-05 | 2018-02-13 | 中国航空工业集团公司洛阳电光设备研究所 | Laser pick-off adjustment method and debugging apparatus |
| CN110769247A (en) * | 2019-11-07 | 2020-02-07 | 上海集成电路研发中心有限公司 | Image sensor testing jig and testing method |
| CN110769247B (en) * | 2019-11-07 | 2021-08-31 | 上海集成电路研发中心有限公司 | Image sensor testing jig and testing method |
| CN111580213A (en) * | 2020-06-18 | 2020-08-25 | 中国建筑材料科学研究总院有限公司 | Double-straight-area curved optical fiber cone and application thereof |
| CN111580213B (en) * | 2020-06-18 | 2023-01-31 | 中国建筑材料科学研究总院有限公司 | Double-straight-area curved optical fiber cone and application thereof |
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