CN117518686A - Periscope type irradiation-resistant lens - Google Patents
Periscope type irradiation-resistant lens Download PDFInfo
- Publication number
- CN117518686A CN117518686A CN202311451830.1A CN202311451830A CN117518686A CN 117518686 A CN117518686 A CN 117518686A CN 202311451830 A CN202311451830 A CN 202311451830A CN 117518686 A CN117518686 A CN 117518686A
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- Prior art keywords
- lens
- barrel
- lens group
- resistant
- prism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000003384 imaging method Methods 0.000 claims abstract description 70
- 230000005855 radiation Effects 0.000 claims abstract description 44
- 238000005452 bending Methods 0.000 claims abstract description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 7
- 229910052796 boron Inorganic materials 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 description 10
- 239000005304 optical glass Substances 0.000 description 10
- 230000002265 prevention Effects 0.000 description 5
- 230000003471 anti-radiation Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/17—Bodies with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/0065—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element having a beam-folding prism or mirror
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/009—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras having zoom function
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
Abstract
The invention relates to a periscope type irradiation-resistant lens, which comprises a lens barrel, a primary imaging lens group, a reflecting prism and a secondary imaging lens group, wherein the lens barrel is of an L-shaped structure; the primary imaging lens group is used for primary imaging; the reflecting prism is arranged at the rear of the primary imaging lens group and used for changing the direction of a light path passing through the primary imaging lens group; the secondary imaging lens group is used for secondary imaging and is arranged on a light path after passing through the reflecting prism; the primary imaging lens group and the secondary imaging lens group are respectively arranged at two ends of the lens barrel, and the reflecting prism is arranged at the bending part of the lens; the lens with the L-shaped structure ensures that the image receiving device is not directly exposed to the radiation environment, the irradiation resistance of the lens is realized, and compared with the reflective structure in the prior art, the lens with the L-shaped structure has the advantages that the occupied space of the primary imaging lens group, the reflective prism and the secondary imaging lens group in the lens is small, the structure is simple, and the whole volume of the lens is reduced.
Description
Technical Field
The invention relates to the technical field of radiation-resistant cameras, in particular to a periscope type radiation-resistant lens.
Background
The irradiation-resistant camera is an irradiation-resistant monitoring device which is developed based on industrial automation and combined with engineering application. In the irradiation environment operation, a robot is usually used for replacing manual operation, but the position, the state and the surrounding environment of the robot cannot be observed in the process, and the irradiation-resistant camera has strong irradiation-resistant capability on the premise of having an image acquisition function, so that the irradiation-resistant camera is widely applied to the irradiation environment operation.
The closed-circuit television system is an effective observation tool in the management of the nuclear power plant, and can be used for operators in a main control room of the nuclear power plant to review abnormal operation conditions such as conditions of important areas of each plant of the nuclear power plant. For video monitoring of radioactive areas, radiation resistant cameras are particularly important devices. The development of nuclear power industry brings great space for the use of the radiation-resistant camera, actively researches, develops and applies the radiation-resistant camera of the nuclear power plant, and has important significance for nuclear energy utilization and nuclear power development.
In order to prevent the diameter of an imaging element in a camera lens from facing a target, most of the lenses of the current radiation-resistant cameras use a reflective structure, and radiation can be prevented from directly damaging an electronic element in a shielding shell by adopting a reflective imaging mode, so that radiation-resistant performance is improved by the principle of radiation shielding and reflective imaging.
But in order to guarantee a camera view, sufficient space needs to be left for the mirror in the device. Therefore, the lens of the reflection type irradiation-resistant camera in the prior art has the problems of large size and complex internal structure.
Disclosure of Invention
Aiming at least one problem in the prior art, the invention aims to provide the periscope type irradiation-resistant lens, and the lens is of an L-shaped periscope type lens structure by arranging different lens groups and prisms, so that the volume of the lens is reduced, the complex structure in the lens is reduced, and the irradiation resistance of the lens is realized.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a periscope type radiation resistant lens, comprising:
a lens barrel having an L-shaped structure;
a primary imaging lens group for primary imaging;
the reflecting prism is arranged behind the primary imaging lens group and is used for changing the direction of a light path passing through the primary imaging lens group;
the secondary imaging lens group is used for secondary imaging and is arranged on the light path after passing through the reflecting prism;
the primary imaging lens group and the secondary imaging lens group are respectively arranged at two ends of the lens barrel, and the reflecting prism is arranged at the bending part of the lens barrel.
Preferably, the primary imaging lens group comprises a wide-angle lens group and a focusing lens which are sequentially arranged.
Preferably, the reflecting prism is a right-angle total reflecting prism, so that the front and rear light path directions are bent by 90 degrees.
Preferably, the secondary imaging lens group comprises a first convex lens, a second concave lens and a third convex lens which are sequentially arranged.
Preferably, the wide angle lens group, the focusing lens, the reflecting prism, the first convex lens, the second concave lens and the third convex lens all adopt radiation-resistant glass.
Preferably, the lens barrel comprises a front lens barrel, a middle lens barrel and a prism barrel which are sequentially connected, and the prism barrel is perpendicular to the middle lens barrel.
Preferably, the wide angle lens group is disposed in the front barrel, the focusing lens is disposed in the middle barrel, the reflecting prism is disposed in the prism barrel, and the first convex lens, the second concave lens and the third convex lens are also disposed in the prism barrel.
Preferably, the lens barrel further comprises a circuit board fixing barrel, wherein the circuit board fixing barrel is provided with an image receiving device, and the image receiving device is arranged behind the light path of the secondary imaging lens group and used for receiving images formed by the secondary imaging lens group.
Preferably, the lens cone is wrapped with a radiation-proof protective cover, the radiation-proof protective cover comprises an outer shell, an intermediate layer and an inner shell which are arranged from outside to inside, and the lens cone is arranged in the inner shell.
Preferably, the outer shell is made of an aluminum alloy material, the middle layer is made of metallic lead, and the inner shell is made of boron-containing polyethylene.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. the periscope type irradiation-resistant lens provided by the invention has the advantages that the lens with the L-shaped structure ensures that an image receiving device is not directly exposed to the radiation environment, the irradiation resistance of the lens is realized, compared with the reflective structure in the prior art, the lens with the L-shaped structure has small occupied space of the primary imaging lens group, the reflective prism and the secondary imaging lens group, the structure is simple, and the whole volume of the lens is reduced.
2. The periscope type radiation-resistant lens, the primary imaging lens, the reflecting prism and the secondary imaging lens group are all made of radiation-resistant optical glass, so that the periscope type radiation-resistant lens has good transmittance attenuation optical stability and radiation resistance, reduces the radiation quantity of rays to subsequent image receiving devices, and prolongs the radiation-resistant working life of the system.
3. The periscope type irradiation-resistant lens provided by the invention is sleeved with the irradiation-resistant protective cover, so that the irradiation resistance of the lens is further improved.
Drawings
Fig. 1 is a schematic cross-sectional view of a periscope type radiation-resistant lens according to an embodiment of the invention.
Fig. 2 is a schematic view of an optical path provided by this embodiment of the present invention.
Reference numerals in the drawings:
1 is a lens barrel, 101 is a front lens barrel, 102 is a middle lens barrel, 103 is a prism barrel, 104 is a circuit board fixed barrel, 2 is a primary imaging lens group, 201 is a wide angle lens group, 202 is a focusing lens, 3 is a reflecting prism, 4 is a secondary imaging lens group, 401 is a first convex lens, 402 is a second concave lens, 403 is a third convex lens, 5 is an image receiving device, 6 is a triangle fixed block, 7 is a prism rear cover, 8 is a camera fixed plate, and 9 is a middle lens barrel fixed frame.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "front", "rear", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "disposed," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
According to the periscope type irradiation-resistant lens, the lens is of the L-shaped periscope type lens structure by arranging the different lens groups and the reflecting prisms, so that the volume of the lens is reduced, the complex structure in the lens is reduced, and the irradiation resistance of the lens is realized.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Examples
Referring to fig. 1 in combination, the periscope type irradiation-resistant lens provided in the present embodiment includes a lens barrel 1, a primary imaging lens group 2, a reflecting prism 3 and a secondary imaging lens group 4,
the lens cone 1 is of an L-shaped structure;
the primary imaging lens group 2 is used for primary imaging;
the reflecting prism 3 is arranged behind the primary imaging lens group 2 and is used for changing the direction of a light path passing through the primary imaging lens group 2;
the secondary imaging lens group 4 is used for secondary imaging and is arranged on the optical path after passing through the reflecting prism 3;
the primary imaging lens group 2 and the secondary imaging lens group 4 are respectively arranged at two ends of the lens barrel 1, and the reflecting prism 1 is arranged at the bending part of the lens barrel 1.
In specific application, the lens barrel 1 is a cylinder and can be made of metal materials, and as the lens barrel 1 is of an L-shaped structure, the front end and the rear end of the lens barrel are mutually perpendicular; the primary imaging lens group 2 is arranged at the front end of the lens barrel 1, and the secondary imaging lens group 4 is arranged at the rear end of the lens barrel 1; the reflecting prism 3 is provided at a bent portion of the lens barrel.
Referring to fig. 1 and 2 in combination, the arrow direction is the direction of the optical path, the optical path is imaged once by the primary imaging lens group 2, and after passing through the reflecting prism 3, the optical path is bent by 90 degrees, and then imaged once by the secondary imaging lens 4, and the final image is received by the image receiving device 5, and the image receiving device 5 may be a CCD or a CMOS.
The periscope type L-shaped structure lens guarantees that the image receiving device 5 is not directly exposed to the radiation environment, the irradiation resistance of the lens is achieved, and compared with the reflection type structure in the prior art, the L-shaped structure lens is small in occupied space of the primary imaging lens group 2, the reflection prism 3 and the secondary imaging lens group 4, the space is not required to be reserved like the reflection type structure, the periscope type structure is simple, and the overall size and weight of the lens are reduced.
In this embodiment, the primary imaging lens 2 group includes a wide angle lens group 201 and a focus lens 202, which are sequentially arranged.
In a specific application, the wide-angle lens group 201 is disposed at the front end of the lens barrel 1, and is used for receiving and shrinking the light beam, so as to increase the angle of view and realize wide-angle observation. The focusing lens 202 is a convex lens for focusing the light beam, and the wide angle lens group 201 and the focusing lens 202 realize one-time imaging. The wide-angle lens group 201 is made of K709 radiation-resistant optical glass, the radiation-resistant glass is optical glass which is stable and does not change color to the radiation, the focusing lens 202 is made of ZF501 radiation-resistant optical glass, the transmissivity of the radiation-resistant optical glass is almost unchanged under the irradiation dose of 0.1kGy, the transmissivity attenuation optical stability is good even under the maximum irradiation dose of 200kGy, the radiation-resistant performance is good, and the radiation-resistant optical glass is arranged at the front part of the lens, so that the radiation quantity of rays to subsequent parts is reduced, and the radiation-resistant service life of the system is greatly prolonged.
In this embodiment, the reflecting prism 3 is a right angle total reflecting prism, and the front and rear light path directions are bent by 90 degrees.
In a specific application, the reflecting prism 3 is a triangular total reflecting prism, and the reflection distortion is small. The reflecting prism 3 is made of K709 radiation resistant optical glass. After the light path is emitted by the reflecting prism 3, the light path is bent in an L shape.
In this embodiment, the secondary imaging lens group 4 includes a first convex lens 401, a second concave lens 402, and a third convex lens 403, which are disposed in this order.
In a specific application, the light path passing through the reflecting prism 3 sequentially passes through the first convex lens 401, the second concave lens 402 and the third convex lens 403, and the secondary imaging lens group 4 can realize secondary imaging. The first convex lens 401 and the third convex lens 403 are made of K709 radiation resistant optical glass, and the second concave lens 402 is made of ZF501 radiation resistant optical glass.
The primary imaging lens 2, the reflecting prism 3 and the secondary imaging lens group 4 are all made of radiation-resistant optical glass, and mainly act on the rear image receiving device 5 to image and realize radiation protection.
Referring to fig. 1 in combination, in this embodiment, the lens barrel 1 includes a front lens barrel 101, a middle lens barrel 102, a prism barrel 103, and a circuit board fixing barrel 104, which are sequentially connected. The wide angle lens group 201 is disposed in the front barrel 101, the focusing lens 202 is disposed in the middle barrel 102, the reflecting prism 3 is disposed in the prism barrel 104, and the first convex lens 401, the second concave lens 402, and the third convex lens 403 are also disposed in the prism barrel 103. The prism barrel 103 and the circuit board fixing barrel 104 are perpendicular to the front barrel 101 and the middle barrel 102.
The circuit board fixing barrel 104 is provided with an image receiving device 5, and the image receiving device 5 is arranged behind the optical path of the secondary imaging lens group 4 and is used for receiving the image formed by the secondary imaging lens group 4.
In specific application, the inner wall of the front lens barrel 101 is provided with three-stage annular steps with diameters in the advancing direction of an eye light path being sequentially reduced, the wide-angle lens group 201 is arranged on an annular step surface in the middle, a pressing ring is arranged on the annular step of the front end of the wide-angle lens group 201, the wide-angle lens group 201 can be firmly pressed by the pressing ring, a space ring is arranged between the annular steps of the wide-angle lens group 201 and the rear end, the space ring can realize the functions of dust prevention and water prevention, and the inner structure is protected from being influenced by external environment. The front barrel 101 is provided with a flare opening, which increases the light entering the front barrel 101 and further enlarges the viewing angle.
The focusing lens 202 is arranged in the middle lens barrel 102, an annular groove is formed in one end, connected with the middle lens barrel 102, of the front lens barrel 101, an annular boss is arranged at one end, connected with the middle lens barrel 102, of the front lens barrel 101, when the front lens barrel 101 is connected with the middle lens barrel 102, the annular boss enters and exits into the annular groove, and the annular groove and the annular boss are connected in a mode that better sealing effect can be achieved, and meanwhile the depth of the annular boss inserted into the annular groove is adjusted, so that adjustment of an optical path can be achieved.
The middle lens barrel 102 is provided with a middle lens barrel fixing frame 9 outside for connecting the lens with other external components.
The prism barrel 103 is fixedly connected with the middle lens barrel 102, a triangular fixing block is arranged in the prism barrel 103, and the reflecting prism 3 is glued on the triangular fixing block 6 through optical glue; the prism rear cover 7 is arranged on the prism barrel 103, and the triangular fixed block 5 can be adjusted by opening the prism rear cover 7, so that the adjustment of the light path is realized.
The prism barrel 103 is provided with mounting grooves for a first convex lens 401, a second concave lens 402 and a third convex lens 403, and the first convex lens 401, the second concave lens 402 and the third convex lens 403 are fixed in the mounting grooves by a pressing ring and are positioned below the reflecting prism 3.
The prism barrel 103 is connected with the circuit board fixing barrel 104 through screws, the image receiving device 5 is arranged on the camera fixing plate 8, and is fixed on the circuit board fixing barrel 104 through the camera fixing plate 8.
In this embodiment, the lens barrel 1 is wrapped with an anti-radiation protection cover, the anti-radiation protection cover comprises an outer shell, an intermediate layer and an inner shell which are arranged from outside to inside, and the lens barrel 1 is arranged in the inner shell.
In specific application, the outer shell is made of aluminum alloy material, the middle layer is made of metallic lead, the inner shell is made of boron-containing polyethylene, the boron-containing polyethylene plate is mainly used for protecting neutrons and rays, and the novel composite shielding material is manufactured by adopting a high-temperature compression molding process. The boron polyethylene has the functions of neutron prevention, gamma ray prevention, radiation prevention and the like. The boron-containing polyethylene has light weight, good high temperature resistance and chemical corrosion resistance, higher wear resistance than common plastics and low loss; aging resistance and long service life. The boron-containing polyethylene plate and the lead block are used as shielding layers, so that a core main board circuit can be protected, and the radiation protection performance is greatly improved. The image receiving device 5 is in the protection range of the anti-radiation protection cover, so that the radiation resistance of the lens is further improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. Periscope type radiation-resistant lens is characterized by comprising:
a lens barrel having an L-shaped structure;
a primary imaging lens group for primary imaging;
the reflecting prism is arranged behind the primary imaging lens group and is used for changing the direction of a light path passing through the primary imaging lens group;
the secondary imaging lens group is used for secondary imaging and is arranged on the light path after passing through the reflecting prism;
the primary imaging lens group and the secondary imaging lens group are respectively arranged at two ends of the lens barrel, and the reflecting prism is arranged at the bending part of the lens barrel.
2. The periscope type irradiation resistant lens as claimed in claim 1, wherein the primary imaging lens group comprises a wide angle lens group and a focusing lens which are sequentially arranged.
3. The periscope type irradiation resistant lens as claimed in claim 2, wherein the reflecting prism is a right angle total reflecting prism, and the front and rear light path directions are bent by 90 degrees.
4. The periscope type irradiation tolerance lens of claim 3, wherein the secondary imaging lens group comprises a first convex lens, a second concave lens and a third convex lens which are sequentially arranged.
5. The periscope type radiation resistant lens of claim 4, wherein the wide angle lens group, the focal lens, the reflecting prism, the first convex lens, the second concave lens and the third convex lens are all made of radiation resistant glass.
6. The periscope type irradiation resistant lens as claimed in claim 5, wherein the lens barrel comprises a front lens barrel, a middle lens barrel and a prism barrel which are sequentially connected, and the prism barrel is perpendicular to the middle lens barrel.
7. The periscope type irradiation resistant lens as set forth in claim 5, wherein said wide angle lens group is disposed in said front barrel, said focusing lens is disposed in said middle barrel, said reflecting prism is disposed in said prism barrel, and said first convex lens, said second concave lens and said third convex lens are also disposed in said prism barrel.
8. The periscope type irradiation tolerance lens according to claim 5, wherein the lens barrel further comprises a circuit board fixing barrel, the circuit board fixing barrel is provided with an image receiving device, and the image receiving device is arranged behind the light path of the secondary imaging lens group and used for receiving an image formed by the secondary imaging lens group.
9. The periscope type radiation resistant lens of claim 8, wherein the lens barrel is wrapped with a radiation resistant protective cover, the radiation resistant protective cover comprises an outer shell, an intermediate layer and an inner shell which are arranged from outside to inside, and the lens barrel is arranged in the inner shell.
10. The periscope type irradiation resistant lens of claim 9, wherein the outer shell is made of aluminum alloy material, the middle layer is made of metallic lead, and the inner shell is made of boron-containing polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311451830.1A CN117518686A (en) | 2023-11-02 | 2023-11-02 | Periscope type irradiation-resistant lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311451830.1A CN117518686A (en) | 2023-11-02 | 2023-11-02 | Periscope type irradiation-resistant lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117518686A true CN117518686A (en) | 2024-02-06 |
Family
ID=89752316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311451830.1A Pending CN117518686A (en) | 2023-11-02 | 2023-11-02 | Periscope type irradiation-resistant lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117518686A (en) |
-
2023
- 2023-11-02 CN CN202311451830.1A patent/CN117518686A/en active Pending
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