CN202008549U - Super high-resolution optical microscopic imaging device - Google Patents
Super high-resolution optical microscopic imaging device Download PDFInfo
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- CN202008549U CN202008549U CN2010205731528U CN201020573152U CN202008549U CN 202008549 U CN202008549 U CN 202008549U CN 2010205731528 U CN2010205731528 U CN 2010205731528U CN 201020573152 U CN201020573152 U CN 201020573152U CN 202008549 U CN202008549 U CN 202008549U
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Abstract
The utility model discloses a super high-resolution optical microscopic imaging device. Narrowband filtering , ring-shaped aperture and dark field illumination combined special illumination and microscopic imaging method are adopted, ring-shaped light-transmitting apertures with different values of aperture, transmittance and color filter characteristic are designed, thus realizing super high-resolution and high contrast microscopic imaging of micro-nano sized substance. The optical microscopic imaging device comprises a high-resolution optical microscopic system composed of an LED illumination light source, a light barrier, a ring-shaped light hole, a condenser, a sample stage, a light-shading disk and a microscopic object lens, a CCD image sensor, as well as a microscopic image acquisition and processing system composed of an image acquisition card and a computer. The utility model has the advantages of keeping the real time, direct and non-scanning imaging observation mode of a conventional optical microscope, and possessing excellent resolution and image contrast.
Description
Technical field
The utility model belongs to the optical microscopy field, relates to a kind of optical microphotograph imaging device of ultrahigh resolution especially.
Background technology
Flourish along with micro-nano technology, people are more and more higher to the requirement of the instrument that can observe and study material on cell, nanometer and even atomic level.Although the resolution of scanning electron microscope (SEM), scanning tunnel microscope (STM), atomic force microscope (AFM) and the Near-field Optical Microscope (SNOM) that grow up nearly decades can reach micro/nano level, but also exist equipment huge, cost an arm and a leg, shortcoming such as complicated operation, simultaneously, the sample image that they obtained is laid equal stress on through overscanning and is built, and can't realize that optical microscope carries out observing in real time and directly imaging to sample like that.Therefore many scientific researches and industrial circle are used the more general optical microscope that is still.
But, traditional its resolution of optical microscope is subjected to the restriction of optical diffraction.According to Rayleigh criterion, two illuminated objects, have only between them apart from d greater than 0.61 λ/(N.A.) Shi Caineng is distinguished, wherein λ represents lambda1-wavelength, N.A. represent numerical aperture, be object space refractive index n and object lens product at the sinusoidal sin θ in the angle, semiaperture of sample one side.Therefore the approach that improves optical microscope resolution mainly contains two, the one, the wavelength X of shortening incident light, the 2nd, improve microscopical numerical aperture N.A., comprise by the design compound lens and strengthen the aperture angle θ of microcobjective and the refractive index n between employing oil immersion objective increase object lens and the sample.Simple hole diameter enlargement angle can only make N.A. increase to 0.95, even adopt oil immersion objective, the N.A. maximum also can only arrive 1.5.And the resolution of using said method further to improve optical microscope again on original basis will inevitably make the technical difficulty and all rapid rise of cost of equipment.The utility model proposes and developed a kind of optical microphotograph formation method of ultrahigh resolution, set up the optical microphotograph imaging device of ultrahigh resolution.The special lighting and the micro imaging method that adopt narrow-band-filter, annular aperture and dark field illumination to combine, realization is to the micro-imaging of the ultrahigh resolution and the high-contrast of micro-nano size material, satisfies the demand in national economy such as industry, agricultural, national defence and science and technology and each field of social development.
Summary of the invention
The purpose of this utility model is the deficiency that overcomes existing optical microscopy, and a kind of optical microphotograph imaging device of ultrahigh resolution is provided.
The optical microphotograph imaging device of ultrahigh resolution comprises annular aperture illumination and microscopic imaging device, ccd image sensor, image pick-up card, computing machine, power supply, coarse-focusing knob, fine-focusing screw, light-source brightness adjusting knob and support; Support is provided with annular aperture illumination and microscopic imaging device, coarse-focusing knob, fine-focusing screw and light-source brightness adjusting knob; Annular aperture illumination and microscopic imaging device, ccd image sensor, image pick-up card, computing machine and power supply link to each other in turn; Annular aperture illumination and microscopic imaging device comprise LED intense light source, narrow band pass filter, light barrier, annular light hole, condenser, sample stage, shading disk, microcobjective, eyepiece and switching lens; On same optical axis, be provided with LED intense light source, narrow band pass filter, light barrier, annular light hole, condenser, sample stage, shading disk, microcobjective, eyepiece, switching lens successively.
The optical microphotograph imaging device of ultrahigh resolution of the present utility model, its advantage be both kept conventional optical microscope in real time, directly, the imaging observation mode of no-raster, higher resolution and better pictures contrast is provided simultaneously, simple for structure, cost is low, and technical conditions are easy to realize.The special lighting and the micro imaging method that adopt narrow-band-filter, annular aperture and dark field illumination to combine, designed the annular transparent aperture of different numerical apertures, transmitance and colour filter characteristic simultaneously, make the resolution of microscope break through Rayleigh diffraction limit resolution, and the micro-image good contrast that obtains, be expected to be used widely in fields such as micro-nano detection, biomedical research, medical diagnosis and materialogies.
Description of drawings
Fig. 1 is ultrahigh resolution optical microphotograph imaging device structural representation and system chart;
Fig. 2 is ultrahigh resolution optical microphotograph imaging optical path figure;
Fig. 3 is embodiment 1 light barrier and annular transparent aperture series of drawing;
Fig. 4 is embodiment 2 light barriers and annular transparent aperture series of drawing;
Among the figure: annular aperture illumination and microscopic imaging device 1, LED intense light source 2, narrow band pass filter 3, light barrier 4, annular light hole 5, condenser 6, sample stage 7, shading disk 8, microcobjective 9, eyepiece 10, switching lens 11, ccd image sensor 12, image pick-up card 13, computing machine 14, power supply 15, coarse-focusing knob 16, fine-focusing screw 17, light-source brightness adjusting knob 18, support 19.
Embodiment
The utility model is based on transmission-type far-field optics microscope, introduces narrow band pass filter (being about 430nm as centre wavelength, bandwidth 10nm) and annular aperture before condenser.The parallel illumination light that the LED intense light source is sent by narrow band pass filter acquisition short wavelength's (as about wavelength 430nm) incident light, can effectively improve the resolution of microscopic system; Annular aperture is equivalent to aperture filture, allows sample high frequency details composition by optical system, and low frequency disperse composition is suppressed effectively, thereby realize high-resolution micro-imaging; And behind the oblique incident ray illumination sample by the annular aperture generation, enter a shading disk in the hollow cone light beam mode of standing upside down again, only allow that part of light of large-numerical aperture by microcobjective (as adopting 100 * oil immersion objective, numerical aperture N.A. is about 1.25) the participation imaging, and core is blocked, thereby the transmission and the scattered beam that comprise sample characteristic information enter object lens, obtain further realizing the high-resolution micro-imaging on the basis of bright high-contrast sample image in dark background.
As shown in Figure 1, 2, the optical microphotograph imaging device of ultrahigh resolution comprises annular aperture illumination and microscopic imaging device 1, ccd image sensor 12, image pick-up card 13, computing machine 14, power supply 15, coarse-focusing knob 16, fine-focusing screw 17, light-source brightness adjusting knob 18 and support 19; Support 19 is provided with annular aperture illumination and microscopic imaging device 1, coarse-focusing knob 16, fine-focusing screw 17 and light-source brightness adjusting knob 18; Annular aperture illumination and microscopic imaging device 1, ccd image sensor 12, image pick-up card 13, computing machine 14 and power supply 15 link to each other in turn; Annular aperture illumination and microscopic imaging device 1 comprise LED intense light source 2, narrow band pass filter 3, light barrier 4, annular light hole 5, condenser 6, sample stage 7, shading disk 8, microcobjective 9, eyepiece 10 and switching lens 11; On same optical axis, be provided with LED intense light source 2, narrow band pass filter 3, light barrier 4, annular light hole 5, condenser 6, sample stage 7, shading disk 8, microcobjective 9, eyepiece 10 and switching lens 11 successively.
As shown in Figure 3, case study on implementation one has designed the annular aperture of different sizes, makes a series of annular light holes on light barrier, adopts the annular aperture illumination can effectively improve microscopic system resolution.
As shown in Figure 4, embodiment two is designed to have different transmitances with central authorities' circle that is in the light on the basis of embodiment one, adopt this kind annular aperture can overcome the influence of the diffraction secondary lobe that a kind of annular aperture of embodiment brings.
Also can not use narrow band pass filter in addition, but with central authorities be in the light the circle be designed to have different colour filter characteristics with annular light hole, be equivalent to image is carried out coloud coding, the enhancing picture contrast.
The optical microphotograph formation method of ultrahigh resolution is to introduce narrow band pass filter and annular aperture before transmission-type far-field optics microscope condenser, the parallel illumination light that the LED intense light source is sent, obtain short wavelength's quasi-monochromatic light by narrow band pass filter, block the beam center part of quasi-monochromatic light then with light barrier, only allow peripheral part see through annular light hole, annular aperture is equivalent to aperture filture, allow high frequency details composition pass through optical system, and low frequency disperse composition is suppressed effectively, thereby realize high-resolution micro-imaging; This annular beam is focused on by condenser, produce the open circles taper light beam of high dip, after illuminating and seeing through sample, enter a shading disk in the hollow cone light beam mode of standing upside down again, only allow that part of light of large-numerical aperture participate in imaging, and core is blocked, thereby the transmission and the scattered beam that comprise sample characteristic information enter object lens by microcobjective, in dark background, obtain further realizing the high-resolution micro-imaging on the basis of bright high-contrast sample image.
The course of work of the present utility model is as follows:
Energized 15 is regulated the illumination light brightness of LED intense light source 2 by light-source brightness adjusting knob 18, and illuminating ray obtains short wavelength's quasi-monochromatic light by narrow band pass filter 3; Illuminating bundle core after the optical filtering is blocked by light barrier 4, only allows peripheral part see through annular light hole 5; This annular beam is focused on by condenser 6, produce the hollow cone light beam of high dip, on the oblique incident ray illumination sample stage 7 behind the sample, by a shading disk 8, only allow that part of light of large-numerical aperture participate in imaging, and core is blocked, thereby the transmission and the scattered beam that comprise sample characteristic information enter object lens by microcobjective 9, in dark background, obtain further realizing the high-resolution micro-imaging on the basis of bright high-contrast sample image.The sample image that behind microcobjective 9, obtains, receive amplification by eyepiece 10, again through switching lens 11 imaging on ccd image sensor 12, vision signal after processing such as A/D conversion, proportional zoom, is sent to computing machine 14 and shows in real time through display in image pick-up card 13.Regulate the distance of microcobjectives with respect to sample by coarse-focusing knob 16 and fine-focusing screw 17, the micro-image on display is the most clear, freeze frame again when meeting the requirements most.Can adopt the annular transparent aperture of different numerical apertures, transmitance and colour filter characteristic as required, effectively improve microscopic system resolution, reduce the influence of diffraction secondary lobe or image is carried out coloud coding, strengthen picture contrast.
Special lighting and micro imaging method that the utility model adopts narrow-band-filter, annular aperture and dark field illumination to combine are introduced the incident light that narrow band pass filter obtains the short wavelength before condenser, can effectively improve the resolution of microscopic system; Annular aperture is set in illumination path, produce the open circles taper light beam of high dip, shine a shading disk behind this light beam oblique incidence illumination sample, only allow that part of light of large-numerical aperture participate in imaging by microcobjective, and core is blocked, thereby the transmission and the scattered beam that comprise sample characteristic information enter object lens, obtain further realizing the high-resolution micro-imaging on the basis of bright high-contrast sample image in dark background.Sample edge and some details are enhanced, and realize the micro-imaging to the ultrahigh resolution and the high-contrast of micro-nano size material.Satisfy widespread demand in fields such as micro-nano detection, biomedical research, medical diagnosis and materialogies.
Claims (1)
1. the optical microphotograph imaging device of a ultrahigh resolution is characterized in that comprising annular aperture illumination and microscopic imaging device (1), ccd image sensor (12), image pick-up card (13), computing machine (14), power supply (15), coarse-focusing knob (16), fine-focusing screw (17), light-source brightness adjusting knob (18) and support (19); Support (19) is provided with annular aperture illumination and microscopic imaging device (1), coarse-focusing knob (16), fine-focusing screw (17) and light-source brightness adjusting knob (18); Annular aperture illumination and microscopic imaging device (1), ccd image sensor (12), image pick-up card (13), computing machine (14) and power supply (15) link to each other in turn; Annular aperture illumination and microscopic imaging device (1) comprise LED intense light source (2), narrow band pass filter (3), light barrier (4), annular light hole (5), condenser (6), sample stage (7), shading disk (8), microcobjective (9), eyepiece (10) and switching lens (11); On same optical axis, be provided with LED intense light source (2), narrow band pass filter (3), light barrier (4), annular light hole (5), condenser (6), sample stage (7), shading disk (8), microcobjective (9), eyepiece (10), switching lens (11) successively.
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| CN2010205731528U CN202008549U (en) | 2010-10-22 | 2010-10-22 | Super high-resolution optical microscopic imaging device |
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| CN2010205731528U CN202008549U (en) | 2010-10-22 | 2010-10-22 | Super high-resolution optical microscopic imaging device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033308A (en) * | 2010-10-22 | 2011-04-27 | 浙江大学 | Ultra-high resolution optical microscope imaging method and device |
| CN103091840A (en) * | 2011-10-28 | 2013-05-08 | 佳能株式会社 | Optical apparatus, position detection apparatus, microscope apparatus, and exposure apparatus |
| CN103676128A (en) * | 2012-09-17 | 2014-03-26 | 昆山尚达智机械有限公司 | Novel optical comparison microscopic instrument |
| CN106725345A (en) * | 2017-01-24 | 2017-05-31 | 青岛大学 | The device of human microvascular ultra microstructure is detected using circular polarization effluent dark field imaging technique |
| CN107783267A (en) * | 2016-08-30 | 2018-03-09 | 北京大学 | Micro- amplification system |
| CN108152941A (en) * | 2017-11-20 | 2018-06-12 | 北京航空航天大学 | High speed optical super-resolution imaging system and method based on micro-nano lens array |
| CN110603473A (en) * | 2017-04-28 | 2019-12-20 | 安夸系统株式会社 | Optical system for microscope and microscope using the same |
| CN110799893A (en) * | 2017-06-28 | 2020-02-14 | 利格纳米有限公司 | Microsphere lens assembly |
| CN107783267B (en) * | 2016-08-30 | 2024-04-26 | 北京大学 | Microscopic amplifying system |
-
2010
- 2010-10-22 CN CN2010205731528U patent/CN202008549U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033308A (en) * | 2010-10-22 | 2011-04-27 | 浙江大学 | Ultra-high resolution optical microscope imaging method and device |
| CN103091840A (en) * | 2011-10-28 | 2013-05-08 | 佳能株式会社 | Optical apparatus, position detection apparatus, microscope apparatus, and exposure apparatus |
| CN103676128A (en) * | 2012-09-17 | 2014-03-26 | 昆山尚达智机械有限公司 | Novel optical comparison microscopic instrument |
| CN107783267A (en) * | 2016-08-30 | 2018-03-09 | 北京大学 | Micro- amplification system |
| CN107783267B (en) * | 2016-08-30 | 2024-04-26 | 北京大学 | Microscopic amplifying system |
| CN106725345A (en) * | 2017-01-24 | 2017-05-31 | 青岛大学 | The device of human microvascular ultra microstructure is detected using circular polarization effluent dark field imaging technique |
| CN106725345B (en) * | 2017-01-24 | 2023-08-11 | 青岛大学 | Device for detecting human microvascular ultrastructure by using circular polarization sidestream dark field imaging technology |
| CN110603473A (en) * | 2017-04-28 | 2019-12-20 | 安夸系统株式会社 | Optical system for microscope and microscope using the same |
| CN110603473B (en) * | 2017-04-28 | 2021-09-03 | 株式会社觅尔菌 | Optical system for microscope and microscope using the same |
| CN110799893A (en) * | 2017-06-28 | 2020-02-14 | 利格纳米有限公司 | Microsphere lens assembly |
| CN108152941A (en) * | 2017-11-20 | 2018-06-12 | 北京航空航天大学 | High speed optical super-resolution imaging system and method based on micro-nano lens array |
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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: 20111012 Effective date of abandoning: 20120829 |