CN207135176U - A kind of high-performance color CCD, CMOS video camera of resistance to irradiation - Google Patents
A kind of high-performance color CCD, CMOS video camera of resistance to irradiation Download PDFInfo
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- CN207135176U CN207135176U CN201720880130.8U CN201720880130U CN207135176U CN 207135176 U CN207135176 U CN 207135176U CN 201720880130 U CN201720880130 U CN 201720880130U CN 207135176 U CN207135176 U CN 207135176U
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- video camera
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- shielding case
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Abstract
The utility model discloses a kind of high-performance color CCD, CMOS video camera of resistance to irradiation, it is characterised in that the resistance to irradiation video camera further comprises：One shielding case group, an accommodation space is opened up in the shielding case group；One camera body, it is arranged in the accommodation space of the shielding case group；One video camera form, horizontal direction are opened in the top of the shielding case group；The bottom of one periscope type lens, the accommodation space being arranged on above the camera body and the video camera form；One speculum, it is arranged in the accommodation space above the periscope type lens.Video camera is shone using the radiation hardness of said structure, it is intended to reduce the shielding defect area of shielding case, eliminate the shielding blind area of shielding case, lift the integrality of shielding, and then strengthen the radiation-resistant property of video camera.
Description
Technical field
It the utility model is related to the radiation protection technique of resistance to irradiation video camera, especially a kind of high-performance color CCD, CMOS
The video camera of resistance to irradiation.
Background technology
The existing video camera of resistance to irradiation used in nuclear environment, pick-up lens is directly against target, because ccd video camera is prevented
The limitation of radianting capacity is protected, it is difficult to be applied in high roentgen dose X environment.
CCD is Charge Coupled Device, the i.e. abbreviation of charge coupling device, and it is a kind of semiconductor imager
Part, thus there is high sensitivity, resist small strong light, distortion, small volume, long lifespan, anti-vibration.
The working method of ccd video camera is：The image of subject is by lens focus to CCD chip, CCD is according to light
Strong and weak accumulation corresponding proportion electric charge, the electric charge of each pixel accumulation under the control of system sequence, it is point-by-point it is outer move, through filter
After ripple, enhanced processing, vision signal output is formed.The video inputs that vision signal is connected to monitor or television machine can be with
See and original image identical video image.
CMOS is referred to as complementary metal oxide semiconductor, and transistor is actually simply placed on the technology on silico briquette by CMOS,
There is no more implications.Sensor is referred to as cmos sensor and is intended merely to be different from ccd sensor, and image is handled with sensor
Real method it is unrelated.
For the sensitivity of cmos sensor typically in the range of 6 to 15Lux, cmos sensor has fixation to compare ccd sensor
High 10 times of noise, fixed pattern noise rests on screen as that is exactly a pattern all the time, because cmos sensor
It is substantially useless in below 10Lux, therefore all video cameras widely applied all are to have used ccd sensor, cmos sensor is general
In terms of household safe for very low side.
All logical sum control rings can be all placed on same silicon block by cmos sensor, can become video camera
Obtain simply and be easy to carry about with one, therefore cmos camera can be made very small.
Although cmos camera power consumption is same or uses seldom annulus higher than ccd video camera, cmos sensor
Such as CDS, TG and DSP rings, so the total power consumption of same size reduces 1/2 to 1/4 than ccd video camera.
12 volts/150 to 300 milliamperes of the consumption of normal CCD video camera, therefore than 5 to 12 volts of CMOS and 35 to 70
Milliampere has been higher by 2 to 4 times.
The resistance to irradiation video camera of current main flow CCD, CMOS, which employs the mode that alpha ray shield+catoptric imaging is combined, to be come
Radiation-resistant property is lifted, to increase the thickness of shielding case, so as to lift the radiation-resistant property of video camera, using catoptric imaging
Mode can avoid the electronic component that ray is directly damaged in shielding case.
Wherein, Fig. 1 gives the structural representation of resistance to irradiation video camera in the prior art；
The shielding that Fig. 3-1 gives the video camera of resistance to irradiation of this ordinary beam shielding+combined structure of catoptric imaging lacks
Fall into schematic diagram.
Please also refer to Fig. 1 and Fig. 3-1, wherein, camera body 1 and camera lens 2 are provided in the screen for playing protective action
Cover in shell 4, wherein, camera body 1 is provided with a speculum 3, the speculum in the top of camera lens 2 in the lower section of camera lens 2
3 have certain angle with camera lens 2.As can be seen that the problem of structure is primarily present has from diagram：
First, due to architectural limitation, it is such it is resistance to irradiation video camera be necessary for larger-size speculum 3 reserve it is certain
Space, the video camera form 5 of enough sizes can be so reserved to reflected light path, so that the light path of finding a view of camera lens 2 passes through shielding
Shell 4.It will so cause to need certain altitude to set video camera form 5, so as to cause the height and broad-ruler of resistance to irradiation video camera
It is very little larger.
Moreover, this traditional structure can also cause shielding defect area at video camera form 5 be present, also exist in the region small
Partly shielding effect blind area, as shown in figure 3-1, will be internal when ray enters in shielding case 4 from shielding blind area 11 and shielding defect area 10
The optoelectronic components of the camera body 1 in portion cause serious damage, therefore existing product can not be widely used in practical application.
Second, because the resistance to irradiation video camera of tradition generally need to single-handedly be dismantled by personnel, therefore its weight must be controlled in people
In the exercisable scope of power, must generally it be less than 25Kg.Shielding material very high density, camera weight with thickening for shielding case 4 and
It increased dramatically, therefore in actual applications, similar-type products highest is only capable of reaching intergal dose 1*104Gy [Co60] left and right.
3rd, existing resistance to irradiation video camera is mainly considered to gamma-ray protection, and does not consider the protection of neutron.In nuclear power
In the concrete application such as stand, although neutron irradiation dosage is far smaller than gamma-emitting dosage, its damage to video camera is very
Seriously.
Utility model content
It should be appreciated that the general description and the following detailed description more than disclosure is all exemplary and explanat,
And it is intended that the disclosure as claimed in claim provides further explanation.
In view of the above-mentioned problems, the utility model, which provides a kind of radiation hardness of improved structure, shines video camera, pass through redesign
Catoptric imaging structure, reduce video camera shielding case on form perforate, and by imaging circuit it is buried enter shielding case in, reduce shielding
The shielding defect area of shell, the shielding blind area of shielding case is eliminated, lift the integrality of shielding, and then strengthen the radioresistance of video camera
Energy.Secondly, also by redesigning the structure of optoelectronic components, reduce the volume of video camera and camera lens, increase the thickness of screen layer,
And then strengthen the radiation-resistant property of video camera.3rd, by shield shell material screening and design, while protect gamma-rays,
Thermal neutron and fast neutron.
In order to realize foregoing invention purpose, the utility model provides the resistance to irradiation shooting of a kind of high-performance color CCD, CMOS
Machine, it is characterised in that the resistance to irradiation video camera further comprises：
One shielding case group, an accommodation space is opened up in the shielding case group；
One camera body, it is arranged in the accommodation space of the shielding case group；
One video camera form, horizontal direction are opened in the top of the shielding case group；
The bottom of one periscope type lens, the accommodation space being arranged on above the camera body and the video camera form
End；
One speculum, it is arranged in the accommodation space above the periscope type lens.
It is preferable to, the utility model further provides a kind of high-performance color CCD, CMOS video camera of resistance to irradiation,
Characterized in that,
The shielding case group includes neutron shield shell outer layer and gamma ray shielding shell internal layer.
It is preferable to, the utility model further provides a kind of high-performance color CCD, CMOS video camera of resistance to irradiation,
Characterized in that,
The top cover is included inside the top cover of gamma ray shielding shell and outside the top cover of neutron shield shell.
It is preferable to, the utility model further provides a kind of high-performance color CCD, CMOS video camera of resistance to irradiation,
Characterized in that,
The material of the shielding case group includes tungsten, cadmium, Boron-containing-PE and is combined.
It is preferable to, the utility model further provides a kind of high-performance color CCD, CMOS video camera of resistance to irradiation,
Characterized in that,
The neutron shield shell outer layer material of the shielding case group includes cadmium, Shan, Eu, boron carbide ceramics, polyethylene, boracic and gathered
Ethene is combined.
It is preferable to, the utility model further provides a kind of high-performance color CCD, CMOS video camera of resistance to irradiation,
Characterized in that,
The gamma ray shielding shell internal layer material of the shielding case group includes tungsten, lead.
Video camera is shone using the radiation hardness of said structure, it is intended to reduce the shielding defect area of shielding case, eliminate shielding case
Blind area is shielded, lifts the integrality of shielding, and then strengthen the radiation-resistant property of video camera.
Brief description of the drawings
Embodiment of the disclosure is described with detailed reference to accompanying drawing now.It is preferable to carry out now with detailed reference to the disclosure
Example, its example are shown in the drawings.In the case of any possible, will be marked in all of the figs using identical to represent phase
Same or similar part.In addition, although the term used in the disclosure is selected from public term, but this
Some terms mentioned in prospectus are probably that applicant carrys out selection by his or her judgement, and its detailed meanings is at this
Illustrate in the relevant portion of the description of text.In addition, it is desirable to not only by used actual terms, and be also to by each
Meaning that term is contained understands the disclosure.
Below, referring to the drawings, for those skilled in the art, to detailed description of the present utility model
In, above and other objects, features and advantages of the present utility model will be evident.
Fig. 1 is the decomposition texture schematic diagram of resistance to irradiation video camera in the prior art；
Fig. 2 is the decomposition texture schematic diagram of resistance to irradiation video camera of the present utility model；
Fig. 3-1 is decomposition texture schematic diagram (the signal shielding defect area of the video camera of resistance to irradiation of the existing structure of corresponding diagram 1
And blind area)；
Fig. 3-2 is the decomposition texture schematic diagram (signal shielding defect area and blind area) of the video camera of resistance to irradiation of corresponding diagram 2；
Fig. 4 illustrates structural representation after the combination of the shielding case 4 with top cover 6.
Reference
1-- camera body
2-- camera lens
3-- speculum
4-- shielding case
5-- video camera form
6-- top cover
Inside the top cover of 61-- gamma ray shielding shell
Outside the top cover of 62-- neutron shield shell
7-- shielding case group
71-- gamma ray shielding shell internal layer
72-- neutron shield shell outer layer
8-- periscope type lens
10-- shielding defect area
11-- shielding blind area
Embodiment
Subject description discloses one or more embodiments for combining the utility model feature.The disclosed embodiments only example
Show the utility model.The scope of the utility model is not limited to the disclosed embodiments.The utility model is by appended claim
To limit.
" one embodiment " for being quoted in specification, " embodiment ", " exemplary embodiment " etc. show described
Embodiment can include specific characteristic, structure or characteristic, but all embodiments need not include the specific characteristic, structure or characteristic.
In addition, these phrases are not necessarily related to identical embodiment.In addition, specific characteristic, mechanism or characteristic are described contacting an embodiment
When, it is considered as contact other embodiment (regardless of whether being expressly recited) and realizes the skill of this feature, structure or characteristic in this area
Within the knowledge of art personnel.
Furthermore, it is to be understood that spatial description used herein (on for example, under, top, the left side, the right, lower section, top
Portion, bottom, vertical, level etc.) purpose that is merely to illustrate, and the actual implementation of structure as described herein can be
Spatially arranged by any orientation or mode.
It is shown in Figure 2, the video camera of resistance to irradiation of the present utility model, still it is arranged on and is played using camera body 1
Structure in the shielding case 7 of protective action, difference are, conventional lenses 2 are replaced with into periscope type lens 8, the periscopic
It is entitled " a kind of resistance to periscopic structure that the concrete structure of camera lens 8 refers to the utility model that the applicant submits on the same day
Associated description in utility model a case of irradiation wide-angle lens device ".
The utility model is allowed to sufficiently compact, volume is reduced by the optimization design to camera lens and imaging circuit
To Φ 2*8cm or smaller.
Because the radiation-resistant property of camera lens requires far above irradiation, the periscope type lens 8 near video camera form 5
Will not be damaged because irradiating direct projection, thus need only by camera circuitry it is buried enter shielding case in, you can to greatest extent improve screen
The integrality covered.
It it should be noted that ray has extremely strong penetrability, will not be specularly reflected as light, generally can only wear
Saturating material, decay during penetrating and die down, the material penetrated under same material is thicker, and the ray after decay is weaker.
The performance difference of existing procucts and the utility model shielding construction is compared in following table, it is seen that in same shielding case
Under weight, radiation decrement of the present utility model can reach about the 1/2 of existing procucts, therefore shielding property improves about 1 times.
Existing procucts and the contrast of the utility model basic mechanical design feature：
The shielding case made of 15Kg tungsten of table 1
The shielding case made of 25Kg tungsten of table 2
Wherein, in above-mentioned control form, it is assumed that contrasting the imaging circuit of both sides has same radiation-resistant property, and adopts
Shielding material is used as with tungsten (19.35g/cm3, Co60 source γ irradiate HVL=0.79cm).
Wherein, above-mentioned HVL, refer to when X ray, the gamma Rays narrow beam of particular radiation energy or power spectrum pass through regulation thing
During matter, the regulation material that kerma rate, exposure rate or absorbed dose rate are reduced to measured values half during without the material is thick
Degree.
In summary, because the utility model has the advantage that in volume, weight, under the limitation of same volume, this
Utility model video camera can be in the thickness of increase gamma shielding layer, or extra neutron shield is set beyond gamma shielding layer
Layer.
There is one in the structure of Fig. 2 signals to the improvement is that, the part of shielding action is played, by the screen of traditional structure
The shielding case group 7 that shell 4 is changed to double-decker is covered, the shielding case group 7 is included in neutron shield shell outer layer 72 and gamma ray shielding shell
Layer 71.
In addition, to coordinate the shielding case group 7 of double-decker, top cover 6 of the present utility model also uses double-decker, including
62 outside the top cover inside 61 of gamma ray shielding shell and the top cover of neutron shield shell.
Because shielding case employs double-decker, i.e., comprising gamma ray shielding shell internal layer 71 and neutron shield shell outer layer 72
Composite, it is combined by tungsten, cadmium, Boron-containing-PE.
Although gamma ray, but still can be effective by thick several centimeters of heavy metal shield materials with stronger penetration capacity
Weaken.Adoptable material includes tungsten and lead.
Neutron can be subdivided into many kinds according to energy difference, and screen layer is difficult higher to energy under limited protective thickness
Fast neutron effectively protected, therefore the utility model mainly consider to thermal neutron main in thermal reactor power station,
Epithermal neutron and the relatively low fast neutron of portion of energy are decayed and absorbed.
The compound of boron and boron has extensive protection effect to thermal neutron and epithermal neutron, boron carbide can be used to make pottery in
Porcelain, carbonization boron polyethylene.
Polyethylene contains substantial amounts of hydrogen, can effective slowing down fast neutron.
Cadmium equally has good protection effect to thermal neutron, can also be substituted in using Shan, Eu.
Fig. 3-1 and 3 (2) sets forth pair of existing resistance to irradiation video camera and resistance to irradiation video camera of the present utility model
According to structural representation.
Wherein, in Fig. 3-1, speculum can be penetrated from opposite side effusion into the ray of video camera form 5 from horizontal direction
Shielding case.And from the ray of other direction directive camera bodies 1, thicker screen layer need be penetrated, the decay through screen layer
The damage to camera body 1 will decline to a great extent afterwards, but the ray that the shielding defect area represented from region 10 is injected does not pass through then
The shielding attenuation of adequate thickness is crossed, therefore the radiation injury to camera body 1 will be apparently higher than other regions, particularly area
The shielding blind area that domain 11 represents, the ray that camera body 1 is injected from the region are decayed without the screen layer of any thickness, because
This can cause very serious damage to camera body 1.
The problem of existing procucts is larger shielding blind area and shielding defect area be present, and this problem is not provided with pushing up at some
It is particularly acute in the existing procucts of lid 6, this product must avoid the defects of design in the application, avoid weak part is sudden and violent
It is exposed under ray, in order to avoid have a strong impact on use and the life-span of product.
The shielding construction of resistance to irradiation video camera of the present utility model is illustrated in Fig. 3-2, it is illustrated that the width of middle video camera form 5
Degree is far smaller than Fig. 3-1, and so as to sufficiently compact, volume energy is reduced to Φ 2*8cm or smaller.
Therefore, larger defect area and blind area existing for the existing procucts shielding construction shown in Fig. 3-1 are in the utility model
It has been be completely eliminated that, therefore camera circuitry is fully protected, and is not limited by any condition application of the present utility model.
As illustrated, because the radiation-resistant property of periscope type lens 8 requires far above irradiation, exposed to video camera form 5
Neighbouring periscope type lens 8 will not damage because irradiating direct projection, thus need only by camera circuitry it is buried enter shielding case group 7 in,
The integrality of shielding can be improved to greatest extent.
In addition, in structure as shown in figure 3-2, the shielding thickness of top cover 61 is L1, shields the shielding thickness of defect area 10
For L2, the shielding thickness of shielding case 71 is L3.L2 thickness is not less than L1, L3, therefore camera circuitry in the utility model
Fully protected, show can be attenuated to from the ray that any angle comes weak enough, filled camera body 1
Code insurance protects, and is not limited by any condition application of the present utility model.
Fig. 4 gives the structural representation of the video camera of resistance to irradiation after a combination, wherein in periscope type lens 8 and shooting
Gamma ray shielding shell internal layer 71, the top cover inside 61 of gamma ray shielding shell and neutron shield shell are coated with outside machine body 1 successively
Top cover outside 62 and neutron shield shell outer layer 72, outermost layer can be the guard shield made of the materials such as aluminium, stainless steel,
By being determined using operating mode.
Video camera shielding case group 7 of the present utility model is designed to include gamma ray shielding shell internal layer 71 and neutron shield shell
The composite of outer layer 72, it is combined by tungsten, cadmium, Boron-containing-PE.
After tested, under existing shielding construction, under Co60 radioactive source radiation environment, radiation-resistant property can reach video camera
3.5*104Gy.Because the utility model is intended to consider utility model product while possessing superior performance also with higher
Cost performance, therefore the component of video camera movement employs technical grade product.Under particular demands, using aerospace level component
Technical grade element of the present utility model is substituted, the radioresistance of camera body can further be lifted, be made on this condition
Video camera radiation-resistant property be close to 2*105Gy even more highs.
In summary, main advantage of the present utility model is summarized：
First, the camera lens and video camera after the utility model improvement are small-sized, make the accommodation space in shielding case far small
In traditional product, therefore radiation-resistant property of the present utility model is higher compared with traditional product, and in other words, the utility model is more traditional
The radiation-resistant property of product improves 1 times, but weight and volume and traditional product are same or less.
Second, due to completely eliminating shielding blind area, the shielding defect area of existing procucts, after the utility model is improved
The special construction of periscope type lens, make shielding case more thorough to the video camera protection in accommodation space, therefore the utility model has
There is preferably resistance to irradiation application performance.
3rd, the utility model has the advantage of volume and weight, can have more space increase composite shielding layers, remove
To gamma-ray protection, integrated protection more is carried out to thermal neutron, fast neutron.
In addition, camera circuitry of the present utility model is designed using general industry level element, cost is relatively low, in this base
After combining foregoing a variety of optimizations on plinth, radiation-resistant property has reached 3.5*10^4Gy after tested, and current traditional product is resistance to
Irradiation behaviour generally only has 1*10^4Gy or so.
The description to preferred embodiment provided above, so that any technical staff in the art can be used or utilize this
Invention.Various modifications to these embodiments are evident for personnel skilled in the art, can be described here total
Principle be applied to other embodiment and without using creativeness.Thus, the present invention is not limited to embodiment depicted herein, and answers
Foundation meets teachings disclosed herein and the widest range of new feature.
Claims (3)
1. a kind of high-performance color CCD, CMOS video camera of resistance to irradiation, it is characterised in that the resistance to irradiation video camera further wraps
Include：
One shielding case group, an accommodation space is opened up in the shielding case group；
One camera body, it is arranged in the accommodation space of the shielding case group；
One video camera form, horizontal direction are opened in the top of the shielding case group；
The bottom of one periscope type lens, the accommodation space being arranged on above the camera body and the video camera form；
One speculum, it is arranged in the accommodation space above the periscope type lens；
One top cover, it is arranged on the top of the shielding case group and the camera body.
2. high-performance color CCD, CMOS video camera of resistance to irradiation according to claim 1, it is characterised in that
The shielding case group includes neutron shield shell outer layer and gamma ray shielding shell internal layer.
3. high-performance color CCD, CMOS video camera of resistance to irradiation according to claim 2, it is characterised in that
The top cover is included inside the top cover of gamma ray shielding shell and outside the top cover of neutron shield shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720880130.8U CN207135176U (en) | 2017-07-19 | 2017-07-19 | A kind of high-performance color CCD, CMOS video camera of resistance to irradiation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720880130.8U CN207135176U (en) | 2017-07-19 | 2017-07-19 | A kind of high-performance color CCD, CMOS video camera of resistance to irradiation |
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| Publication Number | Publication Date |
|---|---|
| CN207135176U true CN207135176U (en) | 2018-03-23 |
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ID=61639211
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| CN201720880130.8U Active CN207135176U (en) | 2017-07-19 | 2017-07-19 | A kind of high-performance color CCD, CMOS video camera of resistance to irradiation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114285965A (en) * | 2021-12-02 | 2022-04-05 | 上海韦地科技集团有限公司 | Radiation-resistant camera integrated device |
-
2017
- 2017-07-19 CN CN201720880130.8U patent/CN207135176U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114285965A (en) * | 2021-12-02 | 2022-04-05 | 上海韦地科技集团有限公司 | Radiation-resistant camera integrated device |
| CN114285965B (en) * | 2021-12-02 | 2022-11-29 | 上海韦地科技集团有限公司 | Radiation-resistant camera integrated device |
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| TR01 | Transfer of patent right |
Effective date of registration: 20181128 Address after: 2003 Building 309, No. 2005, Hongmei Road, Xuhui District, Shanghai Patentee after: Shanghai Qirui Intelligent Technology Co., Ltd. Address before: 201103 Lane 2080 Lianhua Road, Minhang District, Shanghai Patentee before: Shanghai Xiao Yue Communication Engineering Co. Ltd. |