CN204089950U - Laser scanning imaging system - Google Patents
Laser scanning imaging system Download PDFInfo
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- CN204089950U CN204089950U CN201420395039.3U CN201420395039U CN204089950U CN 204089950 U CN204089950 U CN 204089950U CN 201420395039 U CN201420395039 U CN 201420395039U CN 204089950 U CN204089950 U CN 204089950U
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Abstract
The utility model embodiment provides a kind of laser scanning imaging system, in order to realize simplifying laser scanning imaging flow process, and carries out laser scanning more fast, accurately.This system comprises: built-in PC, control card, optical system, two-dimensional scan platform, high-speed collection card, and at least one laser and optical-electrical converter; Wherein, the scan instruction of input is sent to control card by built-in PC; Control card according to scan instruction, trigger laser, optical-electrical converter, high-speed collection card, two-dimensional scan platform; The exciting light that laser is launched excites the target item on instrument objective table by optical system, and will the scattering fluorescence of generation be excited to be sent to optical-electrical converter; Optical-electrical converter converts the light signal received to analog signal; The analog signal of collection is converted to digital signal by high-speed collection card, and is sent to built-in PC; The digital signal that receives through a series of software algorithm, is generated target item image by built-in PC.
Description
Technical field
The utility model relates to technical field of imaging, particularly relates to a kind of laser scanning imaging system.
Background technology
In present stage, the flow model of the scanning imagery of the laser scanning imaging technology employing in nonspecific constructed field is roughly the same, namely laser is got on sample by laser scanner, back scattered light is received by laser scanning detector, the signal of output is sent to low-noise preamplifier by laser scanning detector, signal after process is sent to signal conditioning circuit by low-noise preamplifier, by signal conditioning circuit, signal is processed, then the signal after process is sent to analog signal and digital signal conversion module, the signal that analog signal exports with the output end signal of digital signal conversion module is connected with digital signal processing module, digital signal processing module sends the digital signal of output to image pick-up card, image pick-up card sends host computer to the signal handling the display of applicable image well.
In sum, the signal processing flow in laser scanning imaging system of the prior art is loaded down with trivial details, and processing speed and accuracy cannot improve.
Utility model content
The utility model embodiment provides a kind of laser scanning imaging system, in order to simplify laser scanning imaging flow process, realizes carrying out laser scanning imaging more fast and accurately to target item.
A kind of laser scanning imaging system that the utility model embodiment provides, for carrying out scanning imagery to target item, this system comprises: built-in computer PC, control card, optical system, two-dimensional scan platform, high-speed collection card, and at least one laser and optical-electrical converter, described optical system comprises scanning head and the link for transmission light; Wherein,
Built-in PC receives the scan instruction of user's input, and sends to control card;
The scan instruction that described control card sends according to described built-in PC, selects laser, optical-electrical converter, and the laser of triggering selection and optical-electrical converter and two-dimensional scan platform and high-speed collection card;
Described laser, according to the triggering of described control card, launches the exciting light of preset wavelength;
Described two-dimensional scan platform is according to the triggering of described control card, the scan instruction sent according to described control card moves, thus drive the scanning head of described optical system to move, wherein, the scanning head of described optical system is fixed on described two-dimensional scan platform;
Described exciting light is also focused on described scanning head by the exciting light launched by laser described in the link transmission of described optical system, by described scanning head, target item is excited, and by described link, the scattering fluorescence exciting target item to produce is sent to optical-electrical converter;
Described optical-electrical converter, according to the triggering of described control card, converts the light signal of the scattering fluorescence receiving described link transmission to analog electrical signal;
Described high-speed collection card, according to the triggering of described control card, gathers the analog electrical signal of described optical-electrical converter conversion, is converted to digital electric signal, and the digital electric signal that described high-speed collection card is changed is sent to built-in PC;
The digital electric signal that described built-in PC sends according to described high-speed collection card, generates the target item image in described sweep limits in real time;
When the digital electric signal that described built-in PC receives the transmission of described high-speed collection card is complete, generate target item complete image.
By this system, adopt high-speed collection card, thus simplify laser scanning imaging system flow process, by setting up control card in laser scanning imaging system, in control system, each parts work timely, thus shorten the time of laser scanning imaging, improve the efficiency of laser scanning imaging, achieve and laser scanning imaging is more fast and accurately carried out to target item.
Preferably, described optical system is optic fibre light path; By the exciting light that laser described in the link transmission in optic fibre light path is launched, and described exciting light is focused on the scanning head of optic fibre light path end, by described scanning head, target item is excited, and the scattering fluorescence exciting target item to produce is sent to optical-electrical converter by the link in optic fibre light path.
Preferably, described laser is milliwatt mw level laser device.
Preferably, described mw level laser device is mw level solid state laser.
Preferably, described optical-electrical converter is photomultiplier or avalanche diode.
Preferably, described control card receive as described built-in PC digital electric signal that described high-speed collection card sends complete time, after generating target item complete image, also for:
Reset instruction is sent to the laser selected and optical-electrical converter and described two-dimensional scan platform.
Preferably, described control card before described optical-electrical converter is according to the triggering of described control card, after described control card selects laser scanner and optical-electrical converter, also for:
Regulate the control voltage of described optical-electrical converter.
Preferably, described built-in PC, also for:
After described built-in PC receives the scan instruction of user's input, send wait instruction to described high-speed collection card;
Described built-in PC receive digital electric signal that described high-speed collection card sends complete after, send out code to described high-speed collection card.
Accompanying drawing explanation
The structural representation of a kind of laser scanning imaging system that Fig. 1 provides for the utility model embodiment;
Concrete annexation schematic diagram in a kind of laser scanning imaging system that Fig. 2 provides for the utility model embodiment between each module;
The laser scanning imaging schematic flow sheet of a kind of laser scanning imaging system that Fig. 3 provides for the utility model embodiment;
Concrete annexation schematic diagram in optical system in a kind of laser scanning imaging system that Fig. 4 provides for the utility model embodiment between each module.
Embodiment
The utility model embodiment provides a kind of laser scanning imaging system, adopt high-speed collection card, thus simplify laser scanning imaging system flow process, by newly establishing control card, in control system, each parts work timely, thus shorten the time of laser scanning imaging, improve the efficiency of laser scanning imaging, achieve and laser scanning imaging is more fast and accurately carried out to target item.
The technical scheme that the utility model embodiment proposes, by the control card set up, according to the scan command of user, preheating laser and optical-electrical converter, and control the execution scan command that in laser scanning imaging system, each parts are orderly in time, thus improve the speed of laser scanning imaging system scanning; By adopting high-speed collection card, simplifying the handling process after photoelectric signal transformation, achieve the collection to optical-electrical converter output signal, and analog electrical signal is to the conversion of digital electric signal, improves the speed of Electric signal processing.
See Fig. 1, the utility model embodiment provides a kind of laser scanning imaging system, for carrying out scanning imagery to target item, comprising: built-in computer PC101, control card 102, optical system 103, two-dimensional scan platform 104, high-speed collection card 105, and at least one laser 106 and optical-electrical converter 107, see Fig. 4, described optical system 103 comprises scanning head 108 and the link 109 for transmission light; Wherein,
Built-in PC101 receives the scan instruction of user's input, and sends to control card 102;
The scan instruction that described control card sends according to described built-in PC101, selects laser 106 and optical-electrical converter 107, and the laser 106 of triggering selection and optical-electrical converter 107 and two-dimensional scan platform 104 and high-speed collection card 105;
Described laser 106, according to the triggering of described control card 102, launches the exciting light of preset wavelength;
Described two-dimensional scan platform 104 is according to the triggering of described control card 102, the scan instruction sent according to described control card 102 moves, thus drive the scanning head 108 in described optical system 103 to move, wherein, the scanning head 108 in described optical system 103 is fixed on described two-dimensional scan platform 104;
The exciting light of described laser 106 transmitting is transmitted by the link 109 in described optical system 103, and the exciting light that described laser 106 is launched is focused on described scanning head 108, excited by the target item on described scanning head 108 pairs of instrument objective tables, and by described link 109, the scattering fluorescence exciting target item to produce is sent to optical-electrical converter 107;
Described optical-electrical converter 107, according to the triggering of described control card 102, converts the light signal receiving the scattering fluorescence that described link 109 transmits to analog electrical signal;
Described high-speed collection card 105, according to the triggering of described control card 102, gathers the analog electrical signal of described optical-electrical converter 107 conversion, is converted to digital electric signal, and the digital electric signal that described high-speed collection card 105 is changed is sent to built-in PC101;
The digital electric signal that described built-in PC101 sends according to described high-speed collection card 105, generates the target item image in described sweep limits in real time;
When the digital electric signal that described built-in PC receives the transmission of described high-speed collection card is complete, generate target item complete image.
See Fig. 2, the laser scanning imaging system specific works flow process that the utility model embodiment provides, comprising:
The scan instruction that user inputs is sent to control card 102 by built-in PC101, wherein, the scan instruction of user's input comprises, the sweep limits of the model of the solid state laser 106 that scanning needs, the model scanning the optical-electrical converter 107 needed and voltage, two-dimensional scan platform 104.
The scan instruction that control card 102 sends according to built-in PC101, selects solid state laser 106 and optical-electrical converter 107, and the solid state laser 106 of triggering selection, optical-electrical converter 107, two-dimensional scan platform 104 and high-speed collection card 105.
Wherein, control card 102 is according to the model of the model of the solid state laser 106 preset in scan instruction with the photovoltaic converter 107 preset, select solid state laser 106 and optical-electrical converter 107, and according to the voltage of photovoltaic converter 107 preset in scan instruction, to optical-electrical converter 107 on-load voltage selected.
In the utility model embodiment, at least one solid state laser can be set.The wavelength of the exciting light that different target items is corresponding also may be different, and target item can be caused to damage if the energy of the exciting light launched crosses good general, therefore, user according to target item, can pre-set the model of required solid state laser.The laser that can be applicable to the utility model embodiment comprises, the solid state laser of low noise, high stability, such as, 473 nanometers (nm) milliwatt level laser device, 532nm milliwatt level laser device, 635nm milliwatt level laser device, near-infrared milliwatt level laser device, far infrared milliwatt level laser device etc.
In the utility model embodiment, at least one optical-electrical converter can be set.For obtaining best target item image, user according to the model of the laser of target item and selection, can determine the optical-electrical converter of best transition effect.The optical-electrical converter that can be applicable to the utility model embodiment comprises, the optical-electrical converter of low noise, as integrated photomultiplier or avalanche diode etc.
Wherein, control card 102, according to the sweep limits preset in scan instruction, triggers two-dimensional scan platform 104, and namely control card 102 sends the sweep limits needing scanning to the stepping motor in two-dimensional scan platform 104.
Due to the employing of the utility model embodiment is point by point scanning imaging method, and therefore, control card 102, by according to the sweep limits in scan instruction, determines the track while scan preset, and sends pulse train successively to the stepping motor in two-dimensional scan platform 104.Stepping motor in two-dimensional scan platform 104 often receives pulsatile once string, moves once according to desired guiding trajectory, thus according to control card 102, two-dimensional scan platform 104 determines that track while scan pointwise is moved.Because the scanning head 108 in described optical system 103 is fixed on described two-dimensional scan platform 104, therefore, two-dimensional scan platform 104 drives scanning head 108 to move, and makes laser scanning imaging system according to the sweep limits in scan instruction, scans successively target item.
Wherein, control card 102, according to scan instruction, triggers high-speed collection card 105 and opens collection and translation function, wherein, acquisition function is the analog electrical signal that collection optical-electrical converter 107 is converted to, and translation function is that the analog electrical signal collected is converted to digital electric signal.
Preferably, in built-in PC101 before input scan instruction, laser scanning imaging system start trigging control card 102 sends reset instruction to two-dimensional scan platform 104, and by the stepping motor of two-dimensional scan platform 104, two-dimensional scan platform 104 is resetted, make two-dimensional scan platform 104 return to initial position.
Preferably, after laser scanning imaging system start, built-in PC101 sends wait instruction to high-speed collection card 105, makes high-speed collection card 105 enter operating state; When described built-in PC receive described high-speed collection card send digital electric signal complete after, built-in PC101 will send out code to high-speed collection card 105, and high-speed collection card 105 is quit work.
The exciting light of preset wavelength launched by the solid state laser 106 selected, this exciting light transmits and focuses on scanning head 108 by optical system 103, launch point-like exciting light by scanning head 108 to excite the target item on instrument objective table, and the scattering fluorescence exciting target item to produce is sent to optical-electrical converter.
Wherein, in order to prevent the mutual interference of the light signal of light signal and the output inputted, transmit the exciting light of solid state laser 106 transmitting with the different circuit in optic fibre light path, and transmit the scattering fluorescence exciting target item to produce.
Preferably, the optical transmission chain in optic fibre light path is used to transmit the exciting light that described default solid state laser is launched in the utility model embodiment.Although by the refraction of the lens in optical system, reflection, transmission, the function transmitting exciting light also can be realized, the debugging of lens and maintenance operation difficulty in optical system, and cost is high.Therefore, in order to realize the fast transport of light signal, and simplifying debugging and the maintenance in later stage, in the utility model embodiment, have selected the optic fibre light path in optical system.
The light signal receiving the scattering fluorescence that optical system 103 is transmitted is converted to analog electrical signal by optical-electrical converter 107.
Preferably, the optical-electrical converter 107 used in the utility model is integrated photovoltaic converter, direct voltage output signal.Optical-electrical converter 107 directly access high-speed collection card 105 can realize conversion and the collection of photosignal, simplifies the handling process that processing module in prior art after photoelectric signal transformation is loaded down with trivial details, reduces the noise of signal transacting.
High-speed collection card 105 gathers the analog electrical signal that optical-electrical converter 107 is changed, and this analog electrical signal is converted to digital electric signal.
High-speed collection card in the utility model embodiment is integrated with the translation function that the acquisition function of common capture card and analog electrical signal are converted to digital electric signal, be different from the mode of capture card collection of the prior art and switching electrical signals, thus solve the segmentation of photoelectric signal transformation post-processing module and the loaded down with trivial details problem of handling process, achieve the Quick Acquisition to the signal of telecommunication and conversion, thus improve laser scanning imaging processing speed.The resolution of the target item image formed due to point by point scanning method is up to 25 microns of um, therefore apply the target item image that this scanning method formed and produce very large data volume, therefore, by adopting universal high-speed collection card, achieve the fast processing to the signal of telecommunication that optical-electrical converter produces.
Built-in PC101 receives the digital electric signal of high-speed collection card 105 conversion by PCI socket, and according to the linear relationship of digital electric signal and image, the digital electric signal received is converted to the target item image that gray value is different, and real-time display over the display.
Hereto, laser scanning imaging system completes the scan task about a target object point in point by point scanning, by that analogy, the scan instruction that control card 102 sends according to built-in PC101, continuous trigger two-dimensional scan platform 104 carries out pointwise according to the sweep limits preset and moves.When the digital electric signal that described built-in PC receives the transmission of described high-speed collection card is complete, display is by laser scanning image complete for display-object article.
Wherein, described display both for being integrated in laser scanning imaging system, also can directly connect external display by laser scanning imaging system, thus can reduce the space that laser scanning imaging system takies.
Due in prior art, laser scanning imaging system passes through special processor, the Electric signal processing synthetic image collected by capture card.But, because this processor need implement specific technical scheme, and the R&D process of this specific technical scheme is very complicated, thus cannot reach along with the upgrading of image algorithm to the update processor replacement, processing speed also cannot improve along with the raising of processor performance.Therefore, built-in PC described in the utility model embodiment is the inner integrated computer of laser scanning imaging system, primarily of computer main board, solid state hard disc, memory bar, CPU composition, therefore, only need to load specific image processing software, thus shorten the R&D cycle of laser scanning imaging system, laser scanning imaging system is regenerated more convenient, perfect along with image algorithm, the upgrading of built-in PC configuration, also accelerates the processing speed of laser scanning imaging system.
Preferably, after built-in PC101 sends target item image to display, built-in PC101 sends reset instruction to control card 102, closes the solid state laser 106 and optical-electrical converter 107 preset.
See Fig. 3, the utility model embodiment provides the laser scanning imaging process of said system to comprise:
S301, built-in PC receive the scan instruction of user's input, and send to control card;
The scan instruction that S302, described control card send according to described built-in PC, selects laser, optical-electrical converter, and the laser of triggering selection and optical-electrical converter and two-dimensional scan platform and high-speed collection card;
S303, described laser, according to the triggering of described control card, launch the exciting light of preset wavelength;
S304, described two-dimensional scan platform are according to the triggering of described control card, the scan instruction sent according to described control card moves, thus drive the scanning head of described optical system to move, wherein, the scanning head of described optical system is fixed on described two-dimensional scan platform;
S305, the exciting light launched by laser described in the link transmission of described optical system, and described exciting light is focused on described scanning head, by described scanning head, target item is excited, and by described link, the scattering fluorescence exciting target item to produce is sent to optical-electrical converter;
S306, described optical-electrical converter, according to the triggering of described control card, convert the light signal of the scattering fluorescence receiving described link transmission to analog electrical signal;
S307, described high-speed collection card, according to the triggering of described control card, gather the analog electrical signal of described optical-electrical converter conversion, are converted to digital electric signal, and the digital electric signal that described high-speed collection card is changed is sent to built-in PC;
The digital electric signal that S308, described built-in PC send according to described high-speed collection card, generates the target item image in described sweep limits in real time;
S309, when described built-in PC receive digital electric signal that described high-speed collection card sends complete time, generate target item complete image.
In sum, the control card of the scheme that the utility model proposes by setting up, selects laser and photovoltaic converter in advance, and in orderly control system, each parts perform scan command, thus improves the speed of system scan target item; Control to select laser by control card, thus reach the exciting light of system energy quick automatic switching different wave length; By adopting integrated optical-electrical converter, direct voltage output signal, no longer carries out complicated change-over circuit, thus reduces noise in output signal, also reduces the area that optical-electrical converter takies simultaneously; By adopting high-speed collection card, achieve the collection to optical-electrical converter output signal, and analog electrical signal is to the conversion of digital electric signal, improves the quality of scanning samples image, improves the speed of signal transacting; By utilizing built-in PC, shorten the R&D cycle of laser scanning imaging system, be more convenient to add perfect image algorithm, be also convenient to change high performance built-in PC parts simultaneously, thus accelerate the processing speed of laser scanning imaging system, also optimize the quality of laser scanning image; By by external for target item display, thus reduce the floor space of laser scanning imaging system.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (5)
1. a laser scanning imaging system, for carrying out scanning imagery to target item, it is characterized in that, this system comprises: built-in computer PC, control card, optical system, two-dimensional scan platform, high-speed collection card, and at least one laser and optical-electrical converter, described optical system comprises scanning head and the link for transmission light; Wherein,
Built-in PC receives the scan instruction of user's input, and sends to control card;
The scan instruction that described control card sends according to described built-in PC, selects laser, optical-electrical converter, and the laser of triggering selection and optical-electrical converter and two-dimensional scan platform and high-speed collection card;
Described laser, according to the triggering of described control card, launches the exciting light of preset wavelength;
Described two-dimensional scan platform is according to the triggering of described control card, the scan instruction sent according to described control card moves, thus drive the scanning head of described optical system to move, wherein, the scanning head of described optical system is fixed on described two-dimensional scan platform;
By the exciting light that laser described in the link transmission of described optical system is launched, and described exciting light is focused on described scanning head, by described scanning head, target item is excited, and by described link, the scattering fluorescence exciting target item to produce is sent to optical-electrical converter;
Described optical-electrical converter, according to the triggering of described control card, converts the light signal of the scattering fluorescence receiving described link transmission to analog electrical signal;
Described high-speed collection card, according to the triggering of described control card, gathers the analog electrical signal of described optical-electrical converter conversion, is converted to digital electric signal, and the digital electric signal that described high-speed collection card is changed is sent to built-in PC;
The digital electric signal that described built-in PC sends according to described high-speed collection card, generates the target item image in described sweep limits in real time;
When the digital electric signal that described built-in PC receives the transmission of described high-speed collection card is complete, generate target item complete image.
2. system according to claim 1, is characterized in that, described optical system is optic fibre light path; By the exciting light that laser described in the link transmission in optic fibre light path is launched, and described exciting light is focused on the scanning head of optic fibre light path end, by described scanning head, target item is excited, and the scattering fluorescence exciting target item to produce is sent to optical-electrical converter by the link in optic fibre light path.
3. system according to claim 1, is characterized in that, described laser is milliwatt mw level laser device.
4. system according to claim 3, is characterized in that, described mw level laser device is mw level solid state laser.
5. system according to claim 1, is characterized in that, described optical-electrical converter is photomultiplier or avalanche diode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420395039.3U CN204089950U (en) | 2014-07-16 | 2014-07-16 | Laser scanning imaging system |
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| CN201420395039.3U CN204089950U (en) | 2014-07-16 | 2014-07-16 | Laser scanning imaging system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104144274A (en) * | 2014-07-16 | 2014-11-12 | 北京赛智创业科技有限公司 | Laser scanning imaging system and method |
| CN108174122A (en) * | 2017-11-28 | 2018-06-15 | 武汉华之洋科技有限公司 | A kind of multiplex image acquisition device and method based on Fibre Optical Sensor |
-
2014
- 2014-07-16 CN CN201420395039.3U patent/CN204089950U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104144274A (en) * | 2014-07-16 | 2014-11-12 | 北京赛智创业科技有限公司 | Laser scanning imaging system and method |
| CN104144274B (en) * | 2014-07-16 | 2017-11-28 | 北京赛智创业科技有限公司 | Laser scanning imaging system and method |
| CN108174122A (en) * | 2017-11-28 | 2018-06-15 | 武汉华之洋科技有限公司 | A kind of multiplex image acquisition device and method based on Fibre Optical Sensor |
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