CN102446683A - Bottom-mounted lens coupled transmission electron microscope digital imaging device - Google Patents
Bottom-mounted lens coupled transmission electron microscope digital imaging device Download PDFInfo
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- CN102446683A CN102446683A CN2011102889308A CN201110288930A CN102446683A CN 102446683 A CN102446683 A CN 102446683A CN 2011102889308 A CN2011102889308 A CN 2011102889308A CN 201110288930 A CN201110288930 A CN 201110288930A CN 102446683 A CN102446683 A CN 102446683A
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- transmission electron
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Abstract
The invention discloses a bottom-mounted lens coupled transmission electron microscope digital imaging device. The device is mainly characterized in that: an observation and transmission electronic fluorescent screen (20) is arranged on a fixed support of an original main fluorescent screen (11) of a transmission electron microscope and used for substituting the original main fluorescent screen (11) and a transmission electron fluorescent screen (15) based on the prior art. The observation and transmission electronic fluorescent screen (20) is used for converting transmission electron images into optical images, so that an observer can observe the images through a lead glass observation window (12), and meanwhile, the images can be shot by a digital camera (17). Due to the design, the device has an effective imaging area and a visual field (90mm * 60mm) which are close to and even exceed those of a general bottom-inserted camera film for the transmission electron microscope, and is particularly applied in the fields of life sciences, medicine and the like which require broad-view transmission electron microscope imaging.
Description
Technical field
The present invention relates to transmission electron microscope, particularly relate to a kind ofly install in transmission electron microscope bottom, the camera lens coupling, with the device of digital form record transmitted electron image and diffraction pattern.
Background technology
The transmission electron beam (10) of reflection sample message projects on the main phosphor screen (11), converts optical imagery to, and the operator observes the optical imagery of this sample through lead glass window (12).When main phosphor screen (11) lifts, deliver to exposure window (13) to the Electronic Speculum film, just can directly write down the electronic image of sample with film; When photographic film not, transmission electron beam (10) just projects the bottom of projection chamber (14).
People adopt the transmitted electron image and the diffraction pattern information of Electronic Speculum Film Recording sample traditionally, from last century the nineties begin, the transmission electron microscope digital imaging technology gets into Rapid development stage.At present, on the market, companies such as external Gatan, TVIPS, OSIS are topmost transmission electron microscope digital imagery goods producers, the domestic transmission electron microscope digital imaging apparatus that does not also have a typing at home.
As everyone knows, transmission electron microscope digital imagery product obtains application more and more widely, but is weighing on the most important parameter of the imaging device-effective imaging area and the visual field, and the transmission electron microscope digital imaging apparatus is compared with film and is in obvious inferior position always.Use the widest transmission electron microscope film and be a kind of end and insert specification that the formula camera the uses film as 90mm * 60mm, its imaging area is much larger than effective imaging area of most transmission electron microscope digital imaging apparatus.
" real-time imaging device of transmission electron microscope " (CN101788506A; The application for a patent for invention specification) a kind of transmission electron microscope digital imaging apparatus is disclosed; Be characterized in: transmitted electron phosphor screen (15) is fixed on the below of projection chamber bottom, exposure window (13), and its center overlaps with the center of transmission electron beam (10); Digital camera (17) is positioned at outside the projection chamber, over against transmitted electron phosphor screen (15); Between transmitted electron phosphor screen (15) and digital camera (17), also has lead glass window (16); Computer (19) is through the exposure parameter of USB2.0 cable (18) control digital camera (17).The transmitted electron phosphor screen (15) of an embodiment of this technical scheme is the circle of diameter 70mm; Area reaches 3800mm2; But because the imageing sensor of digital camera is a rectangle; Only utilized the interior spreading square region of circular fluorescent screen, be about 58mm * 38.5mm, so its effective imaging area has been much smaller than the 90mm * 60mm of film.
" transmission electron microscope imaging mode summary " (medical equipment information; 2007; 22 (9): the Gatan that 43-46) introduces and effective imaging area of TVIPS company dress type of general end transmission electron microscope digital imagery product are all less than 30mm * 30mm; They at that time effective imaging area of (2007) most significant end product be respectively 61.2mm * 61.2mm and 61.4mm * 61.4mm, the 90mm * 60mm that inserts formula film that camera uses with the general end also has sizable gap.Though effective imaging area of the most significant end product Tem-Cam-F816 (http://www.tvips.com/pdfs/TEMCAM-F816.pdf) of (2011) TVIPS company release has recently reached 128mm * 128mm; But the imageing sensor of its topmost part-overlarge area and the price of optical fiber component are very expensive, have only the top research institution of only a few just possibly buy this product.The common transmission electron microscope user that quantity is maximum expects always on middle-end and popular transmission electron microscope digital imagery product, to realize more large tracts of land and more wide-field digital imagery that this also is transmission electron microscope digital imaging technology research staff's pursuit.
Summary of the invention
For develop economy and have near in addition surpass the effective imaging area of general transmission electron microscope film and the visual field (the transmission electron microscope digital imagery product of 90mm * 60mm), the present invention propose dress camera lens of a kind of end simple in structure transmission electron microscope digital imaging apparatus that is coupled.
The technical solution adopted for the present invention to solve the technical problems comprises: 1. substitute the main phosphor screen (11) of transmission electron microscope and the transmitted electron phosphor screen (15) in the prior art (CN101788506A) with observing the transmitted electron phosphor screen (20) of holding concurrently; Its effect be conspicuous-promptly install under the condition of identical digital camera (17) in same spatial location, effectively the imaging area and the visual field obviously increase; 2. cancel the lead glass window (16) among the CN101788506A; Make the digital camera (17) and the transmitted electron phosphor screen (20) of observe the holding concurrently vacuum chamber that exists together; Simplified design and made, avoided lead glass window (16) to the attenuation by absorption of optical imagery with because the interference that scattering and interfacial refraction, reflection cause to image; 3. adopt vacuum socket (21) to realize that vacuum insulation is electrically connected with relevant; 4. the described observation transmitted electron phosphor screen (20) of holding concurrently is a kind of electronics phosphor screen that comprises transparent substrates layer (30), conductive, transparent rete (31) and phosphor powder layer (32) three-decker.
Combine accompanying drawing 4 explanation outstanding advantage of the present invention-realize approaching or above effective imaging area of general transmission electron microscope film and the visual field (90mm * 60mm) now with commonplace components and simple structure.Used transmission electron microscope (41) is Philips EM208S; Digital camera is used the EOS40D of Canon; Its imageing sensor (42) is wide to be 22.2mm; Used digital camera and the installation site thereof of the present invention and prior art (CN101788506A) is constant, observes and holds concurrently between transmitted electron phosphor screen (20) or main phosphor screen (11) and exposure window (13) or the Electronic Speculum film (40) at a distance of 55mm, 22mm apart between exposure window (13) and the transmitted electron phosphor screen (15); Effectively width means is used in the imaging area and the visual field in the drawings, highly obtains (the ratio of width to height of imageing sensor is 3: 2) with width divided by 1.50; If the multiplication factor of Electronic Speculum film (40) is 1, the multiplication factor of main phosphor screen (11) is 0.888, and the multiplication factor of transmitted electron phosphor screen (15) is 1.0256 (MS1MS2: AF1AF2: A1A2=0.888: 1: 1.0256); Related distance, width etc. are to draw by equal proportion in kind among Fig. 4; The visual field of the present invention and prior art all be converted into be equivalent to Electronic Speculum film (40) the visual field so that comparison.
Among Fig. 4, prior art (CN101788506A) is 58mm with part imaging between the A1A2 of transmitted electron phosphor screen (15), and the visual field of the visual field and Electronic Speculum film (40) AF1AF2 section is suitable, is 54.7mm; So effective imaging area of prior art is 58mm * 38.5mm, the visual field that is equal to Electronic Speculum film (40) is 54.7mm * 36.5mm.The present invention partly forms images with observing transmitted electron phosphor screen (20) B1B2 that holds concurrently, and is 88.5mm, and the visual field of the visual field and Electronic Speculum film (40) BF1BF2 section is suitable, is 99mm.Therefore, effective imaging area of the present invention is 88.5mm * 59mm, near the 90mm * 60mm of general transmission electron microscope film, much larger than the 58mm * 38.5mm of prior art; The visual field that the present invention is equal to the transmission electron microscope film is 99mm * 66mm, greater than the 90mm * 60mm of general transmission electron microscope film, more greater than the 54.7mm * 36.5mm of prior art.
Description of drawings
Fig. 1 is based on a kind of transmission electron microscope imaging device structure chart of prior art;
Fig. 2 is based on a kind of transmission electron microscope imaging device structure chart of the present invention;
Fig. 3 observes the transmitted electron fluorescence structure figure that holds concurrently;
Fig. 4 is effective imaging area and the visual field of one embodiment of the invention and based on the effective imaging area of a kind of transmission electron microscope imaging device of prior art and the comparison sketch map in the visual field.
Among the figure: 10. transmission electron beam, 11. main phosphor screens, 12. lead glass windows, 13. exposure windows, 14. projection chambers; 15. the transmitted electron phosphor screen, 16. lead glass windows, 17. digital cameras, 18.USB2.0 cable, 19. computers; 20. observe the transmitted electron phosphor screen of holding concurrently, 21. vacuum sockets, 22. stainless steel casings, 23. power supply and communication cables, 30. transparent substrates layers; 31. the conductive, transparent rete, 32. phosphor powder layers, 40. Electronic Speculum films, 41. transmission electron microscopes, 42. imageing sensors.
Embodiment
The preparation of transmitted electron phosphor screen (20) of observe holding concurrently: optical glass or the transparency silica glass disk of getting a diameter 130mm, thick 3mm are as transparent substrates layer (30); Plate the thick conductive, transparent rete (31) of one deck 15 μ m in its one side with magnetron sputtering or direct current evaporation coating method (consigned processing); Method (Liu Wenbo with the introduction of Liu Wen ripple; Li Hongye. the fluoroscopic a kind of manufacture method of Electronic Speculum. the laboratory science; 2004,12 (6): 47-48) go up making layer of fluorescent powder layer (32) at conductive, transparent rete (31).
Referring to Fig. 1 and Fig. 2, to projection chamber (14) venting of transmission electron microscope Philips EM208S, remove lead glass window (12), pull down main phosphor screen (11); Be fixed on the suitable metal framework (not drawing among the figure) observing the transmitted electron phosphor screen (20) of holding concurrently, be fixed on metal framework on the mounting bracket (not drawing among the figure) of main phosphor screen (11) again.Digital camera (17) is installed in the stainless steel casing (22); Stainless steel casing (22) is fixed on the transmission electron microscope flange in the bottom, and sealing ring (not drawing among the figure) is arranged therebetween; Stainless steel casing has perforate on (22), and so that vacuum socket (21) to be installed, this socket passes through the electrical connection path that stainless steel casing (22) provides isolated vacuum for power supply and communication cable (23); Digital camera (17) obtains feed through power supply and communication cable (23) from the external world, accept a control and an image of taking of computer (19) and pass back to computer (19).
Contents such as the title of equipment that this specification is given an example or device or model and physical dimension are for the present invention and advantage thereof more specifically, intuitively, clearly are described, rather than to the qualification of claim scope of the present invention.
Claims (3)
1. dress camera lens coupling transmission electron microscope digital imaging apparatus at the bottom of a kind comprises the electronics phosphor screen, it is characterized in that: described electronics phosphor screen is a kind of observation transmitted electron phosphor screen (20) of holding concurrently.
2. a kind of end dress camera lens coupling transmission electron microscope digital imaging apparatus according to claim 1; It is characterized in that: the described observation transmitted electron phosphor screen (20) of holding concurrently is installed on the fixed support of transmission electron microscope master phosphor screen (11), replaces original main phosphor screen (11).
3. a kind of end dress camera lens coupling transmission electron microscope digital imaging apparatus according to claim 1 is characterized in that: the described observation transmitted electron phosphor screen (20) of holding concurrently is a kind of electronics phosphor screen that comprises transparent substrates layer (30), conductive, transparent rete (31) and phosphor powder layer (32) three-decker.
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CN201110288930.8A CN102446683B (en) | 2011-09-22 | 2011-09-22 | Bottom-mounted lens coupled transmission electron microscope digital imaging device |
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CN201110288930.8A CN102446683B (en) | 2011-09-22 | 2011-09-22 | Bottom-mounted lens coupled transmission electron microscope digital imaging device |
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CN102446683A true CN102446683A (en) | 2012-05-09 |
CN102446683B CN102446683B (en) | 2014-06-18 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103325649A (en) * | 2013-06-14 | 2013-09-25 | 中国人民解放军南京军区福州总医院 | Bottom-arranged optical fiber coupling transmission electron microscope digital imaging method and device thereof |
CN113906536A (en) * | 2019-05-20 | 2022-01-07 | 埃尔迪科科学股份有限公司 | Diffractometer for charged particle crystallography |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2000149848A (en) * | 1998-11-16 | 2000-05-30 | Jeol Ltd | Transmission electron microscope image observation device |
CN101788506A (en) * | 2010-02-01 | 2010-07-28 | 中国人民解放军南京军区福州总医院 | Real-time imaging device of transmission electron microscope |
CN201563156U (en) * | 2009-12-04 | 2010-08-25 | 肖乐义 | Biological chip scanning processing unit |
CN202307786U (en) * | 2011-09-22 | 2012-07-04 | 中国人民解放军南京军区福州总医院 | Digital imaging device mounted at bottom of transmission electron microscope and coupled with camera lens |
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2011
- 2011-09-22 CN CN201110288930.8A patent/CN102446683B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000149848A (en) * | 1998-11-16 | 2000-05-30 | Jeol Ltd | Transmission electron microscope image observation device |
CN201563156U (en) * | 2009-12-04 | 2010-08-25 | 肖乐义 | Biological chip scanning processing unit |
CN101788506A (en) * | 2010-02-01 | 2010-07-28 | 中国人民解放军南京军区福州总医院 | Real-time imaging device of transmission electron microscope |
CN202307786U (en) * | 2011-09-22 | 2012-07-04 | 中国人民解放军南京军区福州总医院 | Digital imaging device mounted at bottom of transmission electron microscope and coupled with camera lens |
Non-Patent Citations (2)
Title |
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刘冰川等: "透射电子显微镜数字成像系统的研制", 《医疗卫生装备》 * |
苏晓春: "电子显微镜荧光屏的维护及修复方法", 《医疗卫生设备》 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103325649A (en) * | 2013-06-14 | 2013-09-25 | 中国人民解放军南京军区福州总医院 | Bottom-arranged optical fiber coupling transmission electron microscope digital imaging method and device thereof |
CN103325649B (en) * | 2013-06-14 | 2015-10-14 | 中国人民解放军南京军区福州总医院 | Dress coupling fiber transmission electron microscope digital imaging method of a kind of end and device thereof |
CN113906536A (en) * | 2019-05-20 | 2022-01-07 | 埃尔迪科科学股份有限公司 | Diffractometer for charged particle crystallography |
CN113906536B (en) * | 2019-05-20 | 2024-04-19 | 埃尔迪科科学股份有限公司 | Diffractometer for charged particle crystallography |
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