CN203134752U - Side-installed fiber coupling TEM digital imaging apparatus - Google Patents
Side-installed fiber coupling TEM digital imaging apparatus Download PDFInfo
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- CN203134752U CN203134752U CN2013201057116U CN201320105711U CN203134752U CN 203134752 U CN203134752 U CN 203134752U CN 2013201057116 U CN2013201057116 U CN 2013201057116U CN 201320105711 U CN201320105711 U CN 201320105711U CN 203134752 U CN203134752 U CN 203134752U
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Abstract
The utility model relates to a side-installed fiber coupling TEM digital imaging apparatus, comprising a TEM. The lens barrel of the TEM is provided with two 35 mm camera interfaces, wherein each 35 mm camera interface is connected with a vacuum sealing housing, a digital imaging device is arranged in the vacuum sealing housing, the digital imaging device is connected with an optical fiber converter which transmits the transmission electron image or diffraction pattern of a sample to the exterior of the lens barrel, and the optical fiber converter is extended into the lens barrel. According to the side-installed fiber coupling TEM digital imaging apparatus, the problem that the space of the prior TEM 35 mm camera interface is too narrow to accommodate a high performance digital camera, which is inconvenient for developing a high performance customized digital camera, is solved. The fiber coupling technology is employed, the sensitivity is substantially raised, the electron irradiation dose for biological samples is reduced, and the side-installed fiber coupling TEM digital imaging apparatus is specially suitable for the bio-medical field.
Description
Technical field
The utility model relates to transmission electron microscope and imaging device, relate to particularly that a kind of 35mm camera interface by transmission electron microscope is installed, the optical fiber coupling, with the transmitted electron image of digital form record sample or the transmission electron microscope imaging device of diffraction pattern.
Background technology
As shown in Figure 1, for a long time, people observe transmitted electron image or the image of diffraction pattern 11 on main phosphor screen 13 of sample by lead glass window 16, determine region of interest and with the focusing screen accurate focusing after insert the formula camera with end dress film 14 record sample messages by being positioned at the end below the main phosphor screen 13, or by being installed in the side-plug-in camera shooting sample message at transmission electron microscope 35mm camera interface 10 and 12 places.Since nineteen nineties, the application of transmission electron microscope digital imaging apparatus is more and more universal.
People such as Chen Chaoqing at first disclose at home a kind of side dress camera lens coupled mode transmission electron microscope digital image system (Sun Jiguang is etc. transmission electron microscope CCD digital picture receiving processing system [J] for Chen Chaoqing, Shao shellfish antelope. modern instrument, 1999 (5): 8-11.).People such as Gong Dan introduce a kind of side dress camera lens coupled mode transmission electron microscope CCD digital image system (Gong Dan, Ceng Libo, Zhang Hongbo, Deng. the development [J] of transmission electron microscope CCD digital image system. analysis and testing technology and instrument, 2005,11 (2): 133-136.), referring to Fig. 2, this device main feature is: digital camera 25 and transmitted electron phosphor screen 20 are installed by two 35mm camera interfaces 10 and 12 of transmission electron microscope respectively, digital camera 25 is positioned at outside the lens barrel of transmission electron microscope, 20 lens barrels that are positioned at transmission electron microscope of transmitted electron phosphor screen; Optical window 24 plays optical signal transmission and vacuum insulation effect; Stepping motor 22 drives the electronics light path that transmitted electron phosphor screen 20 entered or withdrawed from transmission electron microscope; Optical imagery on the transmitted electron phosphor screen 20 is imaged on the digital camera 25 through right-angle prism 21, optical window 24 and camera lens 23.
Yet the coupling efficiency of camera lens coupled mode device is low, is not suitable for accepting the observation of the biological species sample of low dosage electron irradiation especially.According to people's such as high Ying Jun experimental study (Gao Feng is etc. the Coupling Research [J] of fiber light cone and CCD camera for Gao Yingjun, Yao Shengli. the photon journal, 1999,28 (10): 947-950.), the light transmission rate of light cone and the coupling of CCD camera is more than 57%; Proxitronic Detector Systems(http: //www.proxivision.de/datasheets/Fiber-Optical-Coupling-PR-0051E-03.pdf) say that in its Fiber Optical Couplings literary composition the light transmission rate of the optical fiber of 1:1 and the coupling of CCD camera is about 70%, and the coupling efficiency of F1.0 large aperture camera lens is about 5%.Because the resolution differences at camera lens central authorities and edge is big, especially when large aperture, resolution around the camera lens descends a lot, thereby the aperture-coefficient of the used camera lens of camera lens coupled mode device generally is not more than F1.4 in actual product, and light transmission rate at this moment is about 2%.Light transmission rate with optical fiber and the coupling of CCD camera is 50%, the light transmission rate of camera lens (aperture-coefficient F1.4) is 2% calculating, the sensitivity of optical fiber coupled mode transmission electron microscope digital imaging apparatus is 25 times of camera lens coupled mode device, is particularly suitable for the application of biomedical sector.
Existing fiber coupled mode transmission electron microscope digital imaging apparatus generally adopts the optical fibre device (the optics input face is consistent with the direction of optics output face) of craspedodrome to carry out the coupling of optical fiber (awl) and CCD.Because 35mm camera interface 10 and 12 spaces of transmission electron microscope are narrow and small, be example with Philips EM208-S transmission electron microscope, its installing space that provides is wide to be 60mm, height only is 36mm, referring to Fig. 3, the customization digital camera 32 of special development down can only be held, and all kinds on the mature market, high performance digital camera can not be utilized.Remove light cone 31 shared certain height, the space of leaving customization digital camera 32 for is very little, is unfavorable for the high-performance designs of this customization digital camera 32.
The utility model content
Not high in order to overcome based on the side dress camera lens coupling transmission electron microscope digital imaging apparatus sensitivity of prior art, optical fiber coupled mode transmission electron microscope digital imaging apparatus can not utilize high performance digital camera on the mature market because the 35mm camera interface space of transmission electron microscope is narrow and small, also be unfavorable for developing the deficiency of high performance customization digital camera, the side dress optical fiber coupled mode transmission electron microscope digital imaging apparatus that the technical problems to be solved in the utility model provides a kind of structure uniqueness, realizes easily.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of side dress optical fiber coupling transmission electron microscope digital imaging apparatus, comprise transmission electron microscope, the lens barrel of described transmission electron microscope has two 35mm camera interfaces, wherein any 35mm camera interface is connected with vacuum envelope, be provided with the digital image-forming device in the described vacuum envelope, described digital image-forming device is connected with the transmitted electron image of sample or diffraction pattern is transferred to the outer optical fiber electric optical converter of lens barrel, and described optical fiber electric optical converter stretches in the lens barrel.
Further, described optical fiber electric optical converter comprises by what optical fibre rod was made and turns to optical fiber, and the described optics input face of optical fiber that turns to is provided with the electronics phosphor powder layer, and described electronics phosphor powder layer surface is provided with the conductive film layer with the conducting of lens barrel wall.
Further, the described optics input that turns to optical fiber is circular big end, and described to turn to the optics output of optical fiber be the rectangle small end, describedly turns to the optics input face of optical fiber and optics output face orthogonal.
It is further, described that to turn to perpendicular bisector and the distance between the optics output face of the optics input face of optical fiber be 60 ~ 160mm.
Further, the described outside of optical fiber that turns to is provided with the suitable shape support of the aluminium matter of being convenient to its installation, and the aluminum annular-shaped frame of fixedlying connected with the suitable shape support of aluminium matter is installed on the described electronics phosphor powder layer.
Further, described digital image-forming device is installed on the interior sliding support of vacuum envelope.
Further, described digital image-forming device is connected with extraneous controller by socket, and described socket is installed on the vacuum envelope.
Compared with prior art, the utlity model has following beneficial effect: outside the lens barrel that the utility model is transferred to transmission electron microscope with transmitted electron image or the diffraction pattern of sample by the optical fiber electric optical converter, broken through the restriction of the 35mm camera interface space narrow and small logarithmic code image device geometric size of transmission electron microscope, therefore can select for use ready-made flexibly or customize high performance digital camera as the digital image-forming device, significantly promote the complete machine performance of transmission electron microscope digital imaging apparatus.Because adopt fiber coupling technique, its sensitivity improves greatly, can reduce the electron irradiation dosage of radiosensitive biological species sample, is particularly suitable for the application at biomedical sector.Do not influence the descending of the electron beam that carries sample message during the utility model standby at all.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Description of drawings
Fig. 1 is the imaging schematic diagram of existing transmission electron microscope.
Fig. 2 is the schematic diagram of existing side dress camera lens coupling transmission electron microscope digital imaging apparatus.
Fig. 3 is the schematic diagram of existing optical fiber coupling transmission electron microscope digital imaging apparatus.
Schematic diagram when Fig. 4 is the work of side of the present utility model dress optical fiber coupling transmission electron microscope digital imaging apparatus.
Schematic diagram when Fig. 5 is the standby of side of the present utility model dress optical fiber coupling transmission electron microscope digital imaging apparatus.
Fig. 6 is the structural representation of optical fiber electric optical converter of the present utility model.
Among the figure: 10,12-35mm camera interface, 11-transmitted electron image or diffraction pattern, 13-master's phosphor screen, dress film at the bottom of the 14-, 15-lens barrel, 16-lead glass window, 20-transmitted electron phosphor screen, 21-right-angle prism, 22-stepping motor, the 23-camera lens, 24-optical window, 25-digital camera, the 31-light cone, 32-customizes digital camera, 41-optical fiber electric optical converter, 42-digital image-forming device, the 43-vacuum-sealed cavity, the 44-socket, 45-turns to optical fiber, 46-electronics phosphor powder layer, the 47-conductive film layer, 48-optics input face, the output face of 49-optics, 50-perpendicular bisector.
Embodiment
Shown in Fig. 4 ~ 6, a kind of side dress optical fiber coupling transmission electron microscope digital imaging apparatus, comprise transmission electron microscope, the lens barrel 15 of described transmission electron microscope has two 35mm camera interfaces 10 and 12, wherein 35mm camera interface 10 is connected with vacuum envelope, be provided with digital image-forming device 42 in the described vacuum envelope, described digital image-forming device 42 is connected with the transmitted electron image of sample or diffraction pattern 11 is transferred to lens barrel 15 optical fiber electric optical converter 41 outward, and described optical fiber electric optical converter 41 stretches in the lens barrel 15.
In the present embodiment, described optical fiber electric optical converter 41 comprises by what optical fibre rod was made and turns to optical fiber 45, the described outside of optical fiber 45 that turns to is provided with the suitable shape support of the aluminium matter of being convenient to its installation, the described optics input face 48 of optical fiber 45 that turns to is provided with electronics phosphor powder layer 46, the aluminum annular-shaped frame of fixedlying connected with the suitable shape support of aluminium matter is installed on the described electronics phosphor powder layer 46, described electronics phosphor powder layer 46 surfaces are provided with the conductive film layer 47 with lens barrel 15 wall conductings, and described conductive film layer 47 is aluminium coated.The described optics input that turns to optical fiber 45 is circular big end, and described to turn to the optics output of optical fiber 45 be the rectangle small end, describedly turns to the optics input face 48 of optical fiber 45 and optics output face 49 orthogonal.It is described that to turn to perpendicular bisector 50 and the distance between the optics output face 49 of the optics input face 48 of optical fiber 45 be 60 ~ 160mm.
In the present embodiment, described digital image-forming device 42 is installed on the sliding support (not drawing among the figure) of a metal in the vacuum envelope, described sliding support is formed by magnetism-free stainless steel materials processing, realizes the switching of this device operating state and holding state by sliding support and drive motors thereof; Described digital image-forming device 42 is connected with extraneous controller (not shown) by a socket 44, functions such as the feed of realization logarithmic code image device 42 grades and control, described socket 44 preferred vacuum seal socket MX15-8, described socket 44 is installed on the vacuum envelope.
In the present embodiment, the formation method of this side dress optical fiber coupling transmission electron microscope digital imaging apparatus, may further comprise the steps: (1) makes optical fiber electric optical converter 41; (2) optical fiber electric optical converter 41 and digital image-forming device 42 are linked into an integrated entity; (3) optical fiber electric optical converter 41 and the digital image-forming device 42 that links into an integrated entity is installed in the vacuum envelope; (4) vacuum envelope is connected with the 35mm camera interface 10 of transmission electron microscope lens barrel 15, i.e. lens barrel 15 intracavity inter-connections of the formed vacuum-sealed cavity of this vacuum envelope 43 and transmission electron microscope, this optical fiber electric optical converter 41 stretches in the lens barrel 15 and is transferred to outside the lens barrel 15 with transmitted electron image or diffraction pattern 11 with sample.
In the present embodiment, the manufacture method of the optical fiber electric optical converter 41 in the step (1) is carried out according to the following steps: (1.1) are drawn into diameter 25.4 mm with an end face of the optical fibre rod of diameter 34 mm, a long 140mm, it is orthogonal to bend to two end faces then, and the building up by welding of diameter 25.4 mm become the rectangle of 21 mm * 14 mm, this namely turns to optical fiber 45; (1.2) method of introducing with the Liu Wen ripple (Liu Wenbo, Li Hongye. the fluoroscopic a kind of manufacture method of Electronic Speculum. laboratory science, 2004,12 (6): 47-48) make one deck electronics phosphor powder layer 46 at the diameter 34 mm end faces that turning to optical fiber 45; (1.3) according to the suitable shape support of the sharp processing one aluminium matter that turns to optical fiber 45 conveniently to turn to the installation of optical fiber 45, on electronics phosphor powder layer 46, lay an aluminum annular-shaped frame and fixedly connected (not drawing among the figure) with the suitable shape support of aluminium matter; (1.4) plate layer of aluminum with the direct current evaporation coating method on electronics phosphor powder layer 46 surfaces, form conductive film layer 47.
In the present embodiment, the optical fiber electric optical converter 41 in the step (2) carries out according to the following steps with the method for attachment of digital image-forming device 42: the astronomical digital camera of (2.1) preferred QHY8, throw off the cover glass on digital camera CCD surface with mechanical means; (2.2) CCD is put into the culture dish that fills deionized water, clean twice with ultrasonic cleaning machine, each 15 minutes; (2.3) the optics output face 49 that turns to optical fiber 45 is bondd with CCD with optical cement at superclean bench, CCD and optics output face 49 are positioned at horizontal plane during bonding, and CCD is above optics output face 49.
In the present embodiment, step (3) be the digital image-forming device 42 that will link into an integrated entity and optical fiber electric optical converter 41 be installed in a metal in the vacuum envelope sliding support on (not drawing among the figure), this sliding support is formed by magnetism-free stainless steel materials processing, realizes the switching of this device operating state and holding state by sliding support and drive motors thereof; This digital image-forming device 42 is connected with extraneous controller (not shown) by a socket 44, functions such as the feed of realization logarithmic code image device 42 grades and control, this socket 44 preferred vacuum seal socket MX15-8, this socket 44 is installed on the vacuum envelope.
The above only is preferred embodiment of the present utility model, contents such as the title of the cited equipment of the utility model or device or model are for the utility model and advantage thereof more specifically, intuitively, clearly are described, rather than to the restriction of the utility model claim scope, all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (7)
1. a side is adorned optical fiber coupling transmission electron microscope digital imaging apparatus, comprise transmission electron microscope, the lens barrel of described transmission electron microscope has two 35mm camera interfaces, it is characterized in that: wherein any 35mm camera interface is connected with vacuum envelope, be provided with the digital image-forming device in the described vacuum envelope, described digital image-forming device is connected with the transmitted electron image of sample or diffraction pattern is transferred to the outer optical fiber electric optical converter of lens barrel, and described optical fiber electric optical converter stretches in the lens barrel.
2. side according to claim 1 is adorned optical fiber coupling transmission electron microscope digital imaging apparatus, it is characterized in that: described optical fiber electric optical converter comprises by what optical fibre rod was made and turns to optical fiber, the described optics input face of optical fiber that turns to is provided with the electronics phosphor powder layer, and described electronics phosphor powder layer surface is provided with the conductive film layer with the conducting of lens barrel wall.
3. side according to claim 2 is adorned optical fiber coupling transmission electron microscope digital imaging apparatus, it is characterized in that: the described optics input of optical fiber that turns to is circular big end, described to turn to the optics output of optical fiber be the rectangle small end, describedly turns to the optics input face of optical fiber and optics output face orthogonal.
4. side according to claim 3 dress optical fiber coupling transmission electron microscope digital imaging apparatus is characterized in that: described to turn to perpendicular bisector and the distance between the optics output face of the optics input face of optical fiber be 60 ~ 160mm.
5. according to claim 2,3 or 4 described side dress optical fiber coupling transmission electron microscope digital imaging apparatus, it is characterized in that: the described outside of optical fiber that turns to is provided with the suitable shape support of the aluminium matter of being convenient to its installation, and the aluminum annular-shaped frame of fixedlying connected with the suitable shape support of aluminium matter is installed on the described electronics phosphor powder layer.
6. side according to claim 1 is adorned optical fiber coupling transmission electron microscope digital imaging apparatus, and it is characterized in that: described digital image-forming device is installed on the interior sliding support of vacuum envelope.
7. according to claim 1 or 6 described side dress optical fiber coupling transmission electron microscope digital imaging apparatus, it is characterized in that: described digital image-forming device is connected with extraneous controller by socket, and described socket is installed on the vacuum envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201057116U CN203134752U (en) | 2013-03-08 | 2013-03-08 | Side-installed fiber coupling TEM digital imaging apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201057116U CN203134752U (en) | 2013-03-08 | 2013-03-08 | Side-installed fiber coupling TEM digital imaging apparatus |
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| Publication Number | Publication Date |
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| CN203134752U true CN203134752U (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013201057116U Withdrawn - After Issue CN203134752U (en) | 2013-03-08 | 2013-03-08 | Side-installed fiber coupling TEM digital imaging apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2013
- 2013-03-08 CN CN2013201057116U patent/CN203134752U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130814 Effective date of abandoning: 20151014 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |