CN103533236A - Superhigh-speed digital photography device capable of being applied to multiple schlieren photography and optical splitter - Google Patents
Superhigh-speed digital photography device capable of being applied to multiple schlieren photography and optical splitter Download PDFInfo
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Abstract
The invention relates to the technical field of high-speed photography, in particular to a superhigh-speed digital photography device capable of being applied to multiple superhigh-speed schlieren photography and an optical splitter, wherein the superhigh-speed digital photography device carries out light splitting by utilizing a beam splitter prism optical system and realizes the multiple superhigh-speed schlieren photography by utilizing an image intensifier. The superhigh-speed digital photography device comprises an objective lens, the optical splitter, a synchronous controller, a quick pulse power supply assembly, an imaging device element and the like. The superhigh-speed digital photography device disclosed by the invention has the wide application prospect in the experimental study field, such as Z-Pinch, LIA electronic beam spot diagnosis, and laser and matter interaction, and additionally is applied to experimental study of impaction, detonation physics and fluid dynamics.
Description
Technical field
The present invention relates to high speed photography field, especially relate to a kind of ultrahigh speed digital photographic device and optical splitter that can be used for several ultrahigh speed streak photographs
.
Background technology
High speed photography is a kind of effective method of research high-speed object motion, and the difference the most basic with commonness photograph be, high-speed photography has high time explanation ability, can follow the tracks of and record developing of quick change procedure.The much physics of occurring in nature, chemistry, biology etc. fast change procedure all must just can be observed and study by the method for high-speed photography, such as chemical reaction of the flight of vibrations, shell, sparkover, blast, material etc.Therefore, high speed photography has a wide range of applications in fields such as physics, biology, medical science.Particularly, in national defense and military fields, high speed photography is being brought into play extremely important effect especially.
High-speed photography equipment is classified mainly with technical characterstic greatly, can be divided into generally high-velocity scanning camera and high speed framing camera, up to the present, applying more high speed framing camera mainly contains by time resolving power order from low to high: digital type high speed video camera, rotary mirror type ultrahigh speed framing camera, ultrahigh speed photoelectricity camera etc.Wherein ultrahigh speed photoelectricity camera is the high speed framing camera that photographic frequency is the highest, and its highest photographic frequency can reach 10
8fps(100,000,000 amplitude-frequencies) magnitude.
At present, a domestic key technology difficult problem of only having Shenzhen University and Fluid Physics Inst., China Engineering Physics Academy to break through ultrahigh speed photoelectricity framing camera.2004 Nian， Shenzhen University have developed multichannel photoelectricity framing camera Laboratory Principle model machine, and the highest photographic frequency is 1 * 10
8width/s(100,000,000 amplitude-frequencies).2009 Nian， fluid physics research institutes have completed the development of 8 passage photoelectricity framing cameras, and the highest photographic frequency is 2 * 10
8width/s(200,000,000 amplitude-frequencies), minimum exposure time 5ns, the shortest width interval 1ns, and the time for exposure and width spacing all adjustable, take continuously 1～8 of width number adjustable.
But this type of camera, when carrying out stricter directional light as the schlieren experiment of back illumination, has run into principle problem, beam-splitting optical system picture to object when carrying out several light splitting has also caused and has cut apart.As shown in Figure 1, the common beam-splitting optical system that forms of object lens 1 and object lens 2, is placed in the aperture diaphragm place between object lens 1 and object lens 2 by light splitting pyramid to the beam splitting system principle that Shenzhen University adopts, and the incident light aperture of each visual field is divided into 8 impartial equal portions.Although this light splitting mode can complete light splitting function, there are two problems, the one, segmentation problem ，Er Shimei road, the visual field receiving system when to directional light imaging all will be attached object lens 2, make optics debugging comparatively complicated.The beam-splitting optical system that Fluid Physics Inst., China Engineering Physics Academy adopts as shown in Figure 2, beam splitting system by light splitting object lens and immediately light splitting pyramid thereafter form, light splitting pyramid is placed in the exit pupil position of system, incident ray is after light splitting pyramid and reflective mirror reflection, be direct imaging at receiving system, and the comparison of the first beam splitting system, this light splitting mode has been cast out the object lens 2 after light splitting, make to debug and become simple, but still the segmentation problem to visual field while not solving directional light schlieren experiment.
The light splitting form of Fig. 1, two kinds of current domestic only ultrahigh speed digital photography systems of Fig. 2, adopt approximate optics light-dividing principle, in the aperture of beam-splitting optical system (aperture diaphragm or emergent pupil), locate to settle an effect to be equal to the light splitting pyramid of a plurality of small reflectors, the light of incident image is carried out to cutting apart of many equal portions, by light path, turn back again, thereby become image clearly on 8 image intensifiers.As shown in Figure 3, this principle is when carrying out imaging to diffuse reflector (cosine radiator), because the picture of object all has light incident in whole aperture, so, although light splitting pyramid divides 8 parts only from 1/8 light energy of full aperture different parts, but on each visual field of picture, each reflecting surface of light splitting pyramid can by full aperture luminous energy by a certain percentage (such as 1/8) assign to final image planes, all visual fields a minute light energy be about the same, so for every width image, before the relative brightness at each place, visual field of image and light splitting similarly is unanimous on the whole, imaging is complete.As shown in Figure 4, when adopting strict directional light (such as laser) or the good light of collimation light carry out schlieren experiment as a setting, the incident light corresponding due to each visual field only has the light at " light " (in theory) or very low pore size angle to incide final image planes by aperture diaphragm, the very little light in this root light or this angle, beam orifice is after light splitting pyramid carries out light splitting, just can only finally arrive the final image planes of the sub-picture in 8 width, when light splitting pyramid carries out light splitting to light beam aperture, also caused cutting apart visual field, make when much needing the experimental applications of several ultrahigh speed streak photographs, cannot satisfy the demands.
Summary of the invention
Technical problem to be solved by this invention is: for the problem of above-mentioned existence, a kind of ultrahigh speed digital photographic device and optical splitter that can be used for several ultrahigh speed streak photographs is provided, particularly by adopting Amici prism optical system to carry out the ultrahigh speed digital photographic device that light splitting and image intensifier are realized several ultrahigh speed streak photographs, solved pyramid light splitting type ultrahigh speed digital photography system cutting problem to visual field in schlieren experiment, this device can carry out direct photograph and several ultrahigh speed streak photograph experimental studies of nanosecond time scale easily, the framing digital photographic device that provides a kind of time resolution can reach several ns.
The technical solution used in the present invention is as follows:
A kind of ultrahigh speed digital photographic device that can be used for several streak photographs comprises:
Object lens, for receiving incident light, form target real image, and described target is by isochronous controller, to send triggering signal to trigger the target that target action produces image;
Optical splitter, carries out minute outputs such as n, n for the target real image luminous intensity that object lens are formed > 1;
Isochronous controller, the control signal sending for receiving and resolve industrial computer; And then send for controlling the triggering signal of target action, and control fast pulse power supply module and coupling imaging device element simultaneously; The control signal of described parsing comprises pulse frequency control signal, control signal, triggering signal;
Fast pulse power supply module, the pulse signal sending for receiving isochronous controller, makes fast pulse power supply module produce the control signal of single width time for exposure;
Imaging device element, for receiving the n equal portions incident light of optical splitter output, the single width exposure time control signal of received pulse power generation simultaneously receives the switching signal of isochronous controller simultaneously, carries out target image imaging; Described imaging device element comprises n road imaging device.
Described imaging device comprises:
Image intensifier, for gathering the incident light of optical splitter output, according to the single width exposure time control signal of fast pulse power supply module output, control the work of image intensifier photocathode, and by image intensifier-microchannel plate, incident light is carried out, after micro light detecting and low level light signal enhancing processing, by image intensifier phosphor screen, exporting;
The CCD camera corresponding with image intensifier, receives isochronous controller control signal by CCD camera the second input port, controls the light signal that CCD camera first input end gathers the output of image intensifier phosphor screen, carries out image imaging, and recording image signal;
Connector, is connected for image intensifier is carried out to light with CCD camera first input end;
Described isochronous controller comprises processor, a n counter, programmable delay line, components of drive circuit, and described components of drive circuit comprises the drive circuit with the corresponding number of counter;
Processor, the control signal sending for receiving and resolve industrial computer, sends to counter by pulse frequency control signal by control port;
Counter, counts for paired pulses frequency control signal, and count results is sent to programmable delay line;
Programmable delay line, for according to the count results transmitted signal of counter output to fast pulse power supply module; The triggering signal that receiving processor sends simultaneously, triggers target action;
Drive circuit, for the control signal of amplification processor output, forms switching signal, and drive circuit is worked by switching signal driven CCD camera;
Drive circuit number equates with imaging device number, many one than drive circuit number of programmable delay line number.
Described fast pulse power supply module comprises multichannel fast pulse power supply, and described fast pulse power supply comprises:
RC circuits for triggering, for receiving the Fast-Pulse Measuring of isochronous controller output, carry out signal current limliting and trigger, and reduce interference signal by negative bias pressure side simultaneously;
Amplifier, for amplifying the signal of RC circuits for triggering output;
RC discharge loop, becomes pulse signal for amplifier output signal amplifying signal;
Diode, for signal forward conduction;
Voltage matches circuit, for mating the voltage signal amplitude of diode output;
Wherein drive circuit number equates with fast pulse power supply number.
A kind of ultrahigh speed digital photographic device that can be used for several streak photographs according to claim 4, it is characterized in that described RC circuits for triggering comprise the first electric capacity and the first resistance, amplifier is snowslide pipe, RC discharge loop comprises the second electric capacity and the 4th resistance, the 3rd resistance is current-limiting resistance, the 5th resistance is the resistance of coupling RC discharge loop, the first electric capacity one termination programmable delay line output, the first electric capacity other end is connected with first resistance one end, the first resistance other end, negative bias pressure side second resistance one end is connected with snowslide pipe base stage, cross-over connection the second resistance between snowslide pipe base stage and snowslide pipe emitter, high-tension electricity source is connected with snowslide pipe collector by the 3rd resistance, snowslide pipe collector is by the second electric capacity, the 4th grounding through resistance, the grounded emitter of snowslide pipe, diode anode is connected with the 4th resistance concurrent with the second electric capacity, diode cathode is connected with the 5th resistance one end, the 5th resistance other end is connected with imaging device.
Described optical splitter comprises m Amici prism, described optical splitter is half-reflection and half-transmission Amici prism, the cascade successively of described Amici prism, current Amici prism light input end is connected with upper level Amici prism reflection end or Amici prism refraction end, current Amici prism reflection end or Amici prism refraction end are connected with next stage Amici prism light incident side, first order Amici prism light incident side is connected with object lens output light, the last grade of light splitting prismatic reflection end or the last grade of light splitting refraction by prism end are connected with imaging device, and m is more than or equal to 1.
The described fiber optical transceiver that also comprises, the picture signal that described fiber optical transceiver obtains CCD camera is converted to light signal, and sends it to industrial computer.
A kind of optical splitter that can be used for the ultrahigh speed digital photographic device of several streak photographs is for incident intensity being carried out to minute outputs such as n, n > 1.
Described optical splitter comprises m Amici prism, described optical splitter is half-reflection and half-transmission Amici prism, the cascade successively of described Amici prism, current Amici prism light input end is connected with upper level Amici prism reflection end or Amici prism refraction end, current Amici prism reflection end or Amici prism refraction end are connected with next stage Amici prism light incident side, first order Amici prism light incident side is connected with object lens output light, the last grade of light splitting prismatic reflection end or the last grade of light splitting refraction by prism end are connected with imaging device, and m is more than or equal to 1.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows:
1, the present invention can realize multi-channel image device and carries out field of regard image taking, reaches the effect of several ultrahigh speed streak photographs, carry out easily the direct photograph of nanosecond time scale, and filming frequency can reach 10
8fps(minimum exposure time is 5ns) magnitude.
2, along with the increasing of optical splitter cascade, can realize minimum is several ultrahigh speed streak photograph devices of two width.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Doublet beam splitting system schematic diagram in Fig. 1 prior art.
Single object lens beam splitting system schematic diagram in Fig. 2 prior art.
The schematic diagram of the mode of Fig. 3 available technology adopting pyramid light splitting to diffuse reflector imaging.
Directional light back illumination schlieren experiment schematic diagram in Fig. 4 prior art.
Fig. 5 is principle of the invention block diagram.
Fig. 6 is isochronous controller theory diagram.
Fig. 7 is fast pulse power principle figure.
Fig. 8 is optical splitter light splitting schematic diagram.
Embodiment
Disclosed all features in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing), unless narration especially all can be replaced by other equivalences or the alternative features with similar object.That is,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.
Related description of the present invention:
1, operation principle:
The signal that is triggered triggers echo signal blast, when the scene of object need to being exploded is taken imaging, first by object lens, carries out imaging, and secondly optical splitter carries out the output of n equal portions to the incident intensity of imageable target; By the incident light of n equal portions, through image intensifier, carried out figure image intensifying,
Finally, the processor of isochronous controller receives and resolves the control signal that industrial computer sends, feedback answer signal is to industrial computer (in order to show that isochronous controller has received the signal that industrial computer issues), control signal after wherein resolving comprises pulse frequency control signal, control the control signal of CCD camera action, triggering signal, isochronous controller transmitted frequency control signal to fast pulse power supply after, the output of fast pulse power supply is controlled the single width exposure time control signal of image intensifier photocathode on-off action (while controlling photocathode work, receive incident optical signal, when photocathode is not worked, do not receive photocathode signal).Isochronous controller transmits control signal and directly controls CCD camera and carry out image imaging.Image intensifier obtains the incident optical signal after strengthening imaging by CCD camera, in addition, also can the image imaging signal of CCD collected by camera be sent to industrial computer by fiber optical transceiver.
2, fiber optical transceiver: the signal of telecommunication of CCD camera output is converted to optical signal transmission to industrial computer.
3, image intensifier: negative electrode, microchannel plate (MCP) and phosphor screen, the faint incident light image of optical splitter output is input to photocathode, because photoelectric reflection effect produces photoelectron, under the electric field action between photocathode and MCP input face (MCP-enters), photoelectron accelerates and enters respectively the passage of MCP, through doubling step by step, form a large amount of secondary electrons, then after output end face (MCP-goes out) and fluoroscopic a few kilovoltage acceleration, impact fluorescence shields, cause that fluorescent material is luminous, on phosphor screen, form two dimensional image, therefore input optical imagery is enhanced and through electron focusing, shows that output is on phosphor screen by Gaussian Profile, the detection of realization to target image.Photoelectron number is directly proportional to the intensity of incident radiation, and the brightness that image is every is directly proportional with luminous intensity corresponding on photocathode.
4, CCD camera receives the control signal of isochronous controller, and the light image signal of image intensifier output, according to setpoint frequency collection, is formed to target imaging and processes.CCD camera first input end refers to the port (receiving the signal of image intensifier phosphor screen output) that gathers image, CCD camera the second input refers to the port (being controlled by isochronous controller) of controlling CCD camera operating state, and CCD camera output refers to the port (port being connected with industrial computer by fiber optical transceiver) of output image collection signal.
5, counter data input refers to the port of input count pulse, and counter output refers to the port of output count value.
6, in imaging device, connector is optical taper or coupler and other connected modes.
7, isochronous controller comprises the programmable delay line (DS1021) mating with imaging device number.
8, drive circuit is current amplifier, and for processor output voltage values is carried out to signal amplification, the voltage signal of amplification is for the work of driven CCD camera.
9, counter number is than fast pulse power supply number many one.
10, programmable delay line input input count value, output produces the pulse signal of corresponding frequencies.
11, Amici prism light incident side is accepted incident optical signal, Amici prism reflection end is exactly that incident optical signal is reflected to the port of processing and exporting, the port that Amici prism refraction end carries out this book processing output to incident optical signal exactly, first order Amici prism refers to the Amici prism being connected with object lens light, the last grade of Amici prism refers to the Amici prism being connected with imaging device, when optical splitter only has an Amici prism, first order Amici prism and the last grade of Amici prism refer to same Amici prism, upper level Amici prism refers to the Amici prism that more current Amici prism approaches that end of object lens.Next stage Amici prism refers to the Amici prism that more current Amici prism approaches that end of imaging device.
Embodiment mono-: as shown in Figure 5, a kind of ultrahigh speed digital photographic device that can be used for several streak photographs comprises: object lens, optical splitter, isochronous controller, fast pulse power supply module, imaging device element, described fast pulse power supply module comprises that multichannel fast pulse power supply, described imaging device element comprise the imaging device with fast pulse power supply, imaging device comprises image intensifier (being at least two-way), CCD camera (corresponding with image intensifier number), by connector, image intensifier is connected with CCD camera light.As shown in Figure 6, isochronous controller comprises that processor, counter (equating with image intensifier number), programmable delay line are (than image intensifier number mainly with individual, the triggering signal that unnecessary programmable delay line sends in order to receiving processor, and then control target and trigger, the image of getting along and need to take), components of drive circuit (comprises the drive circuit equating with counter number, for the work of driven CCD camera, drive circuit is current driving circuit or Voltag driving circuit).
Embodiment bis-: as shown in Figure 7, on embodiment mono-basis, shown in fast pulse power supply comprise fast pulse power supply: comprise RC circuits for triggering, amplifier, RC discharge loop, build-out resistor, diode D1.Negative bias pressure side (Vcc) input negative voltage signal, for reducing interference signal.RC circuits for triggering comprise the first resistance C1 and the first resistance R 1.Amplifier is snowslide pipe K1.RC discharge loop comprises the second capacitor C 2 and the 4th resistance R 4.The 3rd resistance is current-limiting resistance.The 5th resistance is the resistance of coupling RC discharge loop.Annexation is: the first electric capacity one termination programmable delay line output, the first electric capacity other end is connected with first resistance one end, the first resistance other end, negative bias pressure side second resistance R 2 one end are connected with snowslide pipe K1 base stage, cross-over connection the second resistance R 2 between snowslide pipe K1 base stage and snowslide pipe K1 emitter, high-tension electricity source is connected with snowslide pipe K1 collector electrode by the 3rd resistance, snowslide pipe K1 collector electrode is by the second capacitor C 2, the 4th resistance R 4 ground connection, snowslide pipe K1 grounded emitter, diode D1 anode is connected with the 4th resistance R 4 concurrents with the second capacitor C 2, diode D1 negative electrode is connected with the 5th resistance R 5.
Embodiment tri-: on embodiment mono-basis, described optical splitter comprises m Amici prism as shown in Figure 8, described Amici prism is half-reflection and half-transmission Amici prism, the cascade successively of described Amici prism, Amici prism light input end is connected with upper level Amici prism reflection end or Amici prism refraction end, Amici prism reflection end or Amici prism refraction end are connected with next stage Amici prism light incident side, first order Amici prism light incident side is connected with object lens output light, the last grade of light splitting prismatic reflection end or the last grade of light splitting refraction by prism end are connected with imaging device, m is more than or equal to 1.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.
Claims (9)
1. a ultrahigh speed digital photographic device that can be used for several streak photographs, is characterized in that comprising:
Object lens, for receiving incident light, form target real image, and described target is by isochronous controller, to send triggering signal to trigger the target that target action produces image;
Optical splitter, carries out minute outputs such as n, n for the target real image luminous intensity that object lens are formed > 1;
Isochronous controller, the control signal sending for receiving and resolve industrial computer; And then send for controlling the triggering signal of target action, and control fast pulse power supply module and coupling imaging device element simultaneously; The control signal of described parsing comprises pulse frequency control signal, control signal, triggering signal;
Fast pulse power supply module, the pulse signal sending for receiving isochronous controller, makes fast pulse power supply module produce the control signal of single width time for exposure;
Imaging device element, for receiving the n equal portions incident light of optical splitter output, the single width exposure time control signal of received pulse power generation simultaneously receives the switching signal of isochronous controller simultaneously, carries out target image imaging; Described imaging device element comprises n road imaging device.
2. a kind of ultrahigh speed digital photographic device that can be used for several streak photographs according to claim 1, is characterized in that described imaging device comprises:
Image intensifier, for gathering the incident light of optical splitter output, according to the single width exposure time control signal of fast pulse power supply module output, control the work of image intensifier photocathode, and by image intensifier-microchannel plate, incident light is carried out, after micro light detecting and low level light signal enhancing processing, by image intensifier phosphor screen, exporting;
The CCD camera corresponding with image intensifier, receives isochronous controller control signal by CCD camera the second input port, controls the light signal that CCD camera first input end gathers the output of image intensifier phosphor screen, carries out image imaging, and recording image signal;
Connector, is connected for image intensifier is carried out to light with CCD camera first input end.
3. a kind of ultrahigh speed digital photographic device that can be used for several streak photographs according to claim 2, it is characterized in that described isochronous controller comprises processor, a n counter, programmable delay line, components of drive circuit, described components of drive circuit comprises the drive circuit with the corresponding number of counter
Processor, the control signal sending for receiving and resolve industrial computer, sends to counter by pulse frequency control signal by control port;
Counter, counts for paired pulses frequency control signal, and count results is sent to programmable delay line;
Programmable delay line, for according to the count results transmitted signal of counter output to fast pulse power supply module; The triggering signal that receiving processor sends simultaneously, triggers target action;
Drive circuit, for the control signal of amplification processor output, forms switching signal, and drive circuit is worked by switching signal driven CCD camera;
Drive circuit number equates with imaging device number, many one than drive circuit number of programmable delay line number.
4. a kind of ultrahigh speed digital photographic device that can be used for several streak photographs according to claim 3, is characterized in that described fast pulse power supply module comprises multichannel fast pulse power supply, and described fast pulse power supply comprises:
RC circuits for triggering, for receiving the Fast-Pulse Measuring of isochronous controller output, carry out signal current limliting and trigger, and reduce interference signal by negative bias pressure side simultaneously;
Amplifier, for amplifying the signal of RC circuits for triggering output;
RC discharge loop, becomes pulse signal for amplifier output signal amplifying signal;
Diode, for signal forward conduction;
Voltage matches circuit, for mating the voltage signal amplitude of diode output;
Wherein drive circuit number equates with fast pulse power supply number.
5. a kind of ultrahigh speed digital photographic device that can be used for several streak photographs according to claim 4, it is characterized in that described RC circuits for triggering comprise the first electric capacity and the first resistance, amplifier is snowslide pipe, RC discharge loop comprises the second electric capacity and the 4th resistance, the 3rd resistance is current-limiting resistance, the 5th resistance is the resistance of coupling RC discharge loop, the first electric capacity one termination programmable delay line output, the first electric capacity other end is connected with first resistance one end, the first resistance other end, negative bias pressure side second resistance one end is connected with snowslide pipe base stage, cross-over connection the second resistance between snowslide pipe base stage and snowslide pipe emitter, high-tension electricity source is connected with snowslide pipe collector by the 3rd resistance, snowslide pipe collector is by the second electric capacity, the 4th grounding through resistance, the grounded emitter of snowslide pipe, diode anode is connected with the 4th resistance concurrent with the second electric capacity, diode cathode is connected with the 5th resistance one end, the 5th resistance other end is connected with imaging device.
6. a kind of ultrahigh speed digital photographic device that can be used for several streak photographs according to claim 2, it is characterized in that described optical splitter comprises m Amici prism, described optical splitter is half-reflection and half-transmission Amici prism, the cascade successively of described Amici prism, current Amici prism light input end is connected with upper level Amici prism reflection end or Amici prism refraction end, current Amici prism reflection end or Amici prism refraction end are connected with next stage Amici prism light incident side, first order Amici prism light incident side is connected with object lens output light, the last grade of light splitting prismatic reflection end is connected with imaging device with the last grade of light splitting refraction by prism end, m is more than or equal to 1.
7. according to a kind of ultrahigh speed digital photographic device that can be used for several streak photographs one of claim 1 to 6 Suo Shu, described in it is characterized in that, also comprise fiber optical transceiver, the picture signal that described fiber optical transceiver obtains CCD camera is converted to light signal, and sends it to industrial computer.
8. an optical splitter that can be used for the ultrahigh speed digital photographic device of several streak photographs, is characterized in that optical splitter is for incident intensity being carried out to minute outputs such as n, n > 1.
9. optical splitter according to claim 8, it is characterized in that described optical splitter comprises m Amici prism, described optical splitter is half-reflection and half-transmission Amici prism, the cascade successively of described Amici prism, current Amici prism light input end is connected with upper level Amici prism reflection end or Amici prism refraction end, current Amici prism reflection end or Amici prism refraction end are connected with next stage Amici prism light incident side, first order Amici prism light incident side is connected with object lens output light, the last grade of light splitting prismatic reflection end or the last grade of light splitting refraction by prism end are connected with imaging device, m is more than or equal to 1.
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| CN108881738A (en) * | 2018-07-10 | 2018-11-23 | 清华大学深圳研究生院 | A method of the high speed for Image Acquisition is to the technology of exposure |
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| CN112995528A (en) * | 2021-05-06 | 2021-06-18 | 中国工程物理研究院流体物理研究所 | Device, system and method for image registration between channels of photoelectric framing camera |
| CN114509911A (en) * | 2021-12-28 | 2022-05-17 | 中国空气动力研究与发展中心超高速空气动力研究所 | Coaxial superspeed multi-sequence laser shadow imaging device |
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