CN203490390U - Optical recording device without ghost images - Google Patents
Optical recording device without ghost images Download PDFInfo
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- CN203490390U CN203490390U CN201320599419.4U CN201320599419U CN203490390U CN 203490390 U CN203490390 U CN 203490390U CN 201320599419 U CN201320599419 U CN 201320599419U CN 203490390 U CN203490390 U CN 203490390U
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Abstract
The utility model relates to the technical field of high-speed photographing, and specifically relates to an optical recording device without ghost images. The utility model aims at solving technical problems in the prior art and providing the optical recording device without the ghost images, and under a precondition that the performance of an ultra high-speed photoelectric photographing instrument is not reduced, the optical recording device is designed, with a system being optimized, as the high-speed photoelectric photographing instrument employing an image intensifier, wherein an input window is employed as an optical fiber panel of the image intensifier, so that ghost image phenomena during an optical propagation process are prevented. The optical recording device comprises an object lens, a light splitting pyramid, an imaging device component, an image receiving device and the like. The optical recording device is applied in an ultra high-speed digital photographing system.
Description
Technical field
The utility model relates to high speed photography field, especially relates to a kind of without ghost image optical recording apparatus.
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, spark discharge, 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 hypervelocity framing camera, hypervelocity photoelectricity camera etc.Wherein hypervelocity photoelectricity camera is the high speed framing camera that photographic frequency is the highest, and its highest photographic frequency can reach 10
8fps(hundred million amplitude-frequencies) magnitude.
In hypervelocity photoelectricity camera chain, the quality of Optical System Design directly affects image quality, generally, optical system transmission plane is processed in any case, always having part light is reflected, be parasitic light, parasitic light is the general name of improper transmission light in optical system, mainly by forming the optical element of system, the reflection of mechanical component and scattering and produce.These parasitic lights are propagated back to another element surface, finally propagate in picture plane, have just formed ghost image, and ghost image is another performance of parasitic light.For imaging optical system, parasitic light can increase the noise in image planes, reduces contrast and the modulation transfer function of image planes, and the level of whole image planes is reduced, and sharpness degenerates, and when serious, stray radiation noise may flood echo signal completely.For optical focus switchable imaging system, because face number is more, structure is comparatively complicated, more easily near image planes, form halation or ghost image, thereby affect acutance and the contrast of imaging, reduced the resolution of camera lens, the identification of jamming target.
Adopt as shown in Figure 1, the image of shooting has ghost image to occur
.the structure of the image intensifier that it adopts is as Fig. 2, input window adopts face glass, its ghost image (parasitic light) forms schematic diagram as shown in Figure 3, is 1. hot spot ideally in figure, but because input window adopts face glass input, photocathode metal-plated membrane, the light that arrives negative electrode image planes has after quite a few reflection, in glass input window the inside, again arrives photocathode after multiple reflections, has just formed ghost image, and ghost image shape is the reflection of pupil shape in image planes, it in figure, is 2. parasitic light.
Utility model content
Technical problem to be solved in the utility model is: the problem existing for prior art, provide a kind of without ghost image optical recording apparatus, it is not reducing under the prerequisite of picture quality, by optimization system, designing, adopt input window is the image intensifier of fibre faceplate, evades the ghost image phenomenon in light communication process.
The technical solution adopted in the utility model is as follows:
A kind ofly without ghost image optical recording apparatus, comprise:
Object lens, for receiving incident light, form target real image;
Light splitting pyramid, carries out minute outputs such as n, n>1 for the target real image light intensity that object lens are formed;
Imaging device element, for receiving the n equal portions incident light of light splitting pyramid output, carries out target image imaging;
Image received device, for receiving the image of imaging device element output, carries out data processing;
Target is connected with imaging device element input end by object lens, light splitting pyramid, and imaging device element output terminal is connected with image received device.
Described imaging device element comprises n road imaging device, and described imaging device comprises:
Image intensifier, for gathering the light signal of light splitting pyramid output, carries out micro light detecting and low level light signal enhancing processing to it;
The CCD camera corresponding with image intensifier, carries out image imaging for gathering the light signal of image intensifier output, and recording image signal, and CCD camera is input to image received device by the picture signal of record subsequently;
Connector, is connected for image intensifier is carried out to light with CCD camera first input end;
Described image intensifier is connected with light splitting pyramid light, and image intensifier is connected with CCD camera by connector.
Described connector is optical taper or Lens Coupling device.
Described image intensifier is high-performance sticking-type booster, and input window is fibre faceplate or antihalation glass.
Described fibre faceplate is spliced by a plurality of fine photoconductive tubes.
Described image received device is that industrial computer or other image are stored, display system.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are:
1) image intensifier that optimization system design, employing input window are fibre faceplate, evades ghost image phenomenon;
2) optical recording apparatus consisting of imaging device, light splitting pyramid, object lens, carries out the direct photograph of nanosecond time scale easily, and the photo of shooting, without ghost image, is conducive to the identification of target.
Accompanying drawing explanation
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 pressure-air gap discharge spark image.
Fig. 2 image enhancer structure schematic diagram.
Fig. 3 ghost image (parasitic light) forms schematic diagram.
This principle of device of Fig. 4 block diagram
Fig. 5 input window is the image enhancer structure figure of fibre faceplate
Fig. 6 input window is the image intensifier total reflection schematic diagram of fibre faceplate.
Fig. 7 without ghost image spark as schematic diagram.
Embodiment
Disclosed all features in this instructions, 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 instructions (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.
1, principle of work:
Echo signal blast, when the scene of object need to being exploded is taken imaging, first carries out imaging by object lens, and secondly light splitting pyramid 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, then the image after the processing of CCD cameras record image intensifier, finally sends target imaging image into industrial computer and carries out data analysis.
2, image intensifier, the normal need of work of CCD camera provide suitable voltage, can select the pulse power or direct supply according to specific works mode.
3, CCD camera first input end refers to the port (receiving the signal of image intensifier video screen output) that gathers image.
Embodiment mono-: as shown in Figure 4, this device comprises object lens, for receiving incident light, forms target real image;
Light splitting pyramid, carries out minute outputs such as n, n>1 for the target real image light intensity that object lens are formed; Imaging device element, for receiving the n equal portions incident light of light splitting pyramid output, carries out target image imaging; Image received device, for receiving the image of imaging device element output, carries out data processing; Target is connected with imaging device element input end by object lens, light splitting pyramid, and imaging device element output terminal is connected with image received device.Described imaging device element comprises n road imaging device, and described imaging device comprises: image intensifier, for gathering the incident light of light splitting pyramid output, carries out micro light detecting and low level light signal enhancing processing to incident light; The CCD camera corresponding with image intensifier, carries out image imaging for gathering the light signal of image intensifier output, and recording image signal, and CCD camera is input to image received device by the picture signal of record subsequently; Connector, is connected for image intensifier is carried out to light with CCD camera first input end; Described image intensifier is connected with light splitting pyramid light, and image intensifier is connected with CCD camera by connector.
Embodiment bis-: on embodiment mono-basis, described connector is optical taper or Lens Coupling device.
Embodiment tri-: on embodiment mono-or two bases, as shown in Figure 5, image intensifier input window adopts fibre faceplate, and fibre faceplate is comprised of a large amount of intensive fine photoconductive tubes, and fiber optics is that the total reflection principle based on light passes picture.As shown in Figure 6, the core material refractive index of optical fiber is greater than the refractive index of cladding, so whole light that incident angle is less than the cirtical angle of total reflection all can only reflect in inner core.So each root optical fiber can transmit light independently, and optical crosstalk not each other.The panel being comprised of a large amount of optical fiber can transmit a width optical imagery.
Fig. 6 has shown the process that light transmits.When the incident angle of light is a
itime, the refraction situation producing can be determined by formula below
（2）
In formula, n
0, n
1, n
2be respectively the refractive index of surrounding medium, fiber core material and fiber cladding.According to the condition (a of total reflection
3=90 °) can obtain the expression formula of critical angle of incidence
From formula (3), as long as select the core material of optical fiber and cladding to make its refractive index meet inequality below, can there is desirable biography as function.
Conventionally, surrounding medium is air, n
0=1, n
2≈ 1.5, so, n
1>=1.8, the most of light that is about to incident is delivered to the other end.
Therefore, this structures shape in the process of light transmission, do not have the generation of parasitic light, effectively evaded ghost image design, as shown in Figure 7, the spark picture of shooting is without ghost image.
The utility model is not limited to aforesaid embodiment.The utility model 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 (6)
1. without a ghost image optical recording apparatus, it is characterized in that comprising:
Object lens, for receiving incident light, form target real image;
Light splitting pyramid, carries out minute outputs such as n, n>1 for the target real image light intensity that object lens are formed;
Imaging device element, for receiving the n equal portions incident light of light splitting pyramid output, carries out target image imaging;
Image received device, for receiving the image of imaging device element output, carries out data processing;
Target is connected with imaging device element input end by object lens, light splitting pyramid, and imaging device element output terminal is connected with image received device.
2. according to claim 1 a kind of without ghost image optical recording apparatus, it is characterized in that described imaging device element comprises n road imaging device, described imaging device comprises:
Image intensifier, for gathering the incident light of light splitting pyramid output, carries out micro light detecting and low level light signal enhancing processing to incident light;
The CCD camera corresponding with image intensifier, carries out image imaging for gathering the light signal of image intensifier output, and recording image signal, and CCD camera is input to image received device by the picture signal of collection subsequently;
Connector, is connected for image intensifier is carried out to light with CCD camera first input end;
Described image intensifier is connected with light splitting pyramid light, and image intensifier is connected with CCD camera by connector.
3. according to claim 2 a kind of without ghost image optical recording apparatus, it is characterized in that described connector is optical taper or Lens Coupling device.
4. according to claim 2 a kind of without ghost image optical recording apparatus, it is characterized in that described image intensifier is high-performance sticking-type booster, input window is fibre faceplate or antihalation glass.
5. according to claim 4 a kind of without ghost image optical recording apparatus, it is characterized in that described fibre faceplate is spliced by a plurality of fine photoconductive tubes.
6. a kind of without ghost image optical recording apparatus according to one of claim 1 to 5 Suo Shu, is characterized in that described image received device is industrial computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320599419.4U CN203490390U (en) | 2013-09-27 | 2013-09-27 | Optical recording device without ghost images |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320599419.4U CN203490390U (en) | 2013-09-27 | 2013-09-27 | Optical recording device without ghost images |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730855A (en) * | 2014-08-08 | 2015-06-24 | 中国空气动力研究与发展中心超高速空气动力研究所 | Superspeed sequence laser shadow imaging device based on beam split pyramid type |
| CN106094227A (en) * | 2016-06-02 | 2016-11-09 | 中国工程物理研究院流体物理研究所 | A kind of light splitting coupling device and method |
| CN107147378A (en) * | 2017-07-03 | 2017-09-08 | 中国工程物理研究院流体物理研究所 | Dual-pulse power supply and double-exposure photoelectricity framing camera |
-
2013
- 2013-09-27 CN CN201320599419.4U patent/CN203490390U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730855A (en) * | 2014-08-08 | 2015-06-24 | 中国空气动力研究与发展中心超高速空气动力研究所 | Superspeed sequence laser shadow imaging device based on beam split pyramid type |
| CN106094227A (en) * | 2016-06-02 | 2016-11-09 | 中国工程物理研究院流体物理研究所 | A kind of light splitting coupling device and method |
| CN106094227B (en) * | 2016-06-02 | 2018-12-21 | 中国工程物理研究院流体物理研究所 | A kind of light splitting coupling device and method |
| CN107147378A (en) * | 2017-07-03 | 2017-09-08 | 中国工程物理研究院流体物理研究所 | Dual-pulse power supply and double-exposure photoelectricity framing camera |
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Granted publication date: 20140319 Termination date: 20210927 |