CN114895427A - Nonmagnetic sealing collimator - Google Patents
Nonmagnetic sealing collimator Download PDFInfo
- Publication number
- CN114895427A CN114895427A CN202210575289.4A CN202210575289A CN114895427A CN 114895427 A CN114895427 A CN 114895427A CN 202210575289 A CN202210575289 A CN 202210575289A CN 114895427 A CN114895427 A CN 114895427A
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- housing
- shell
- sealing
- collimator
- bottom plate
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/30—Collimators
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/32—Fiducial marks and measuring scales within the optical system
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention discloses a nonmagnetic sealing collimator, which comprises an adjusting table, a shell and a sealing assembly, wherein the shell is fixedly arranged on the adjusting table, a containing cavity for containing an optical element is arranged in the shell, an inflation hole, an exhaust hole and a mounting port which are communicated with the containing cavity are formed in the shell, an inflation valve is arranged in the inflation hole, and an exhaust valve is arranged in the exhaust hole; the sealing assembly comprises a sealing shell and a sealing lens, the sealing shell is detachably mounted on the shell, so that the mounting hole is in an opening or closing state, a containing cavity communicated with the containing cavity is formed in the sealing shell, and the sealing lens is fixedly mounted in the containing cavity. The invention has the beneficial effects that: the sealing performance and the moisture resistance of the whole collimator are improved, so that when the collimator works in a humid environment, the optical element in the shell is not easily corroded by water vapor in the air.
Description
Technical Field
The invention relates to the technical field of photoelectric detection, in particular to a nonmagnetic sealing collimator.
Background
The collimator is an important device for optical experiment and measurement detection, and is a high-precision testing instrument. The optical system can provide infinite light beams and is mainly applied to the aspects of optical system installation and calibration, detection, calibration and the like.
The utility model discloses an application number 201320620523.7's china utility model discloses a collimator, casing that extends along the fore-and-aft direction is followed including length, the front end of casing is provided with logical unthreaded hole, be provided with the planar mirror of mirror surface towards the back in the rear that leads to the unthreaded hole in the casing, be provided with the concave surface speculum in the reflection light path of planar mirror's rear in the casing, the concave surface speculum has the orientation forward, and be used for the concave surface speculum face of the parallel light that becomes directive light through the unthreaded hole with the light reflection that planar mirror reflection came, the focus of planar mirror and concave surface speculum all is located the periphery of the reflection light path of concave surface speculum.
The poor sealing performance and moisture resistance of the collimator lead to that when the collimator works in a humid environment (such as outdoors), moisture can enter the interior of the collimator and corrode the optical element.
Disclosure of Invention
The invention aims to overcome the technical defects, provides a nonmagnetic sealing collimator and solves the technical problems that in the prior art, the sealing property and the moisture resistance of the collimator are poor, so that when the collimator works in a humid environment (such as outdoors), moisture can enter the collimator and corrode an optical element.
In order to achieve the above technical object, a technical solution of the present invention provides a nonmagnetic sealed collimator, including:
an adjusting table;
the shell is fixedly arranged on the adjusting table, a containing cavity for containing the optical element is formed in the shell, an inflation hole, an exhaust hole and a mounting port which are communicated with the containing cavity are formed in the shell, an inflation valve is arranged in the inflation hole, and an exhaust valve is arranged in the exhaust hole;
the sealing assembly comprises a sealing shell and a sealing lens, the sealing shell is detachably mounted on the shell so that the mounting hole is in an opening or closing state, a containing cavity communicated with the containing cavity is formed in the sealing shell, and the sealing lens is fixedly mounted in the containing cavity.
Further, the adjusting table comprises a first bottom plate, a second bottom plate, a rotating shaft, two fixing blocks, two lead screws and locking pieces, the second bottom plate is placed on the first bottom plate, the first bottom plate is connected with one end of the second bottom plate in a rotating mode through the rotating shaft, the two fixing blocks are respectively arranged on two sides of the second bottom plate and fixedly installed on the first bottom plate, the two lead screws are respectively provided with threaded holes and threads, the lead screws are respectively connected in the corresponding threaded holes through the threads, the other ends of the lead screws are respectively abutted to the corresponding side walls of the second bottom plate, and the locking pieces penetrate through the first bottom plate and the second bottom plate and are used for fixing the first bottom plate and the second bottom plate.
Further, the shell comprises a first shell, a second shell cover plate and a third shell, the second shell is installed at the rear end of the first shell through threads, the second shell cover plate is fixedly installed on the second shell through screws, the third shell is installed at the front end of the first shell through threads, the first shell is fixedly installed on the second bottom plate, and sealing rings are arranged at the joints of the shells and coated with sealing wax.
Furthermore, the inflation hole is arranged at the front end of the first shell, and the exhaust hole is arranged at the rear end of the first shell.
Further, the nonmagnetic sealing collimator further comprises a light source assembly, wherein the light source assembly comprises a framed condenser, an LED lamp and a support plate, the framed condenser is fixedly installed in the second shell through threads, the LED lamp is fixedly installed on the support plate, the support plate is arranged in the second shell and can move relative to the second shell, the LED lamp is located at the rear end of the second shell, the framed condenser is located at the middle position of the second shell, a lead is arranged on the LED lamp, and the lead penetrates through the rear end of the second shell and is electrically connected with a power supply.
Further, the nonmagnetic sealing collimator further comprises an objective lens assembly, wherein the objective lens assembly comprises a first objective lens, a second objective lens and a third objective lens, the first objective lens and the second objective lens are bonded into a whole through glue and fixedly installed in the third shell, the third objective lens is fixedly installed in the third shell, and the third objective lens is located at the rear ends of the first objective lens and the second objective lens.
Further, the sealing housing is fixedly mounted at the front end of the third housing through screws.
Furthermore, the nonmagnetic sealing collimator also comprises a framed reticle which is arranged inside the second shell and fixedly arranged at the rear end of the first shell through screws.
Furthermore, the nonmagnetic sealing collimator also comprises a uniform light plate with a frame, the uniform light plate with the frame is fixedly arranged inside the second shell through screws, and the uniform light plate with the frame is positioned between the collecting lens with the frame and the reticle with the frame.
Furthermore, the adjusting platform, the shell and the sealing shell are all made of non-magnetic copper materials.
Compared with the prior art, the invention has the beneficial effects that: when the device is produced, the sealing shell is detachably arranged at the front end of the shell, the sealing lens is fixedly arranged on the sealing shell, thereby the inside of the shell is in a sealed environment, the exhaust valve on the exhaust hole is opened, the air in the shell is pumped away by connecting the air pump to the exhaust valve, the inside of the shell is in a vacuum state, closing the exhaust valve, filling nitrogen into the shell through the inflation valve on the inflation hole, closing the inflation valve after the shell is filled with nitrogen, therefore, the optical element inside the shell is in an inert gas environment, the sealing assembly and the nitrogen gas filled into the shell are matched with each other, the sealing performance and the moisture resistance of the whole collimator are improved, and the optical element inside the shell is further not easy to corrode by water vapor in the air when the collimator works in a humid environment (such as outdoors).
Drawings
FIG. 1 is a schematic view of a first view angle of a non-magnetic sealed collimator according to the present invention;
FIG. 2 is a cross-sectional view of a non-magnetic sealed collimator at a second viewing angle according to the present invention;
FIG. 3 is a schematic structural view of the seal assembly of FIG. 1;
FIG. 4 is a schematic view of the first viewing angle of the adjustment stage of FIG. 1;
FIG. 5 is a schematic view of the second viewing angle of the adjustment stage of FIG. 1;
FIG. 6 is a schematic view of the connection of the light source module of FIG. 2 to a second housing;
fig. 7 is a schematic structural view of the objective lens assembly of fig. 2 in connection with a third housing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a nonmagnetic sealing collimator, which is structurally shown in figures 1-3 and comprises an adjusting table 1, a shell 2 and a sealing assembly 3, wherein the shell 2 is fixedly arranged on the adjusting table 1, a containing cavity 21 for containing optical elements is arranged in the shell 2, an inflation hole 22, an exhaust hole 23 and a mounting port 24 which are communicated with the containing cavity 21 are formed in the shell 2, an inflation valve 221 is arranged in the inflation hole 22, and an exhaust valve 231 is arranged in the exhaust hole 23; the sealing assembly 3 includes a sealing housing 31 and a sealing lens 32, the sealing housing 31 is detachably mounted on the housing 2, so that the mounting opening 24 is in an open or closed state, the sealing housing 31 has a receiving cavity 311 therein, the receiving cavity 21 is communicated with the sealing housing 31, and the sealing lens 32 is fixedly mounted in the receiving cavity 311.
When the device is produced, the sealing shell 31 is detachably mounted at the front end of the shell 2, the sealing lens 32 is fixedly mounted on the sealing shell 31, so that the inside of the shell 2 can be in a sealed environment, the exhaust valve 231 on the exhaust hole 23 is opened, the air in the shell 2 is pumped out by connecting the exhaust valve 231 with an air pump, so that the inside of the shell 2 is in a vacuum state, the exhaust valve 231 is closed, nitrogen is filled into the shell 2 through the inflation valve 221 on the inflation hole 22, after the inside of the shell 2 is filled with nitrogen, the inflation valve 221 is closed, so that the optical elements in the shell 2 are in an inert gas environment, and the sealing assembly 3 and the nitrogen are mutually matched to fill the inside of the shell 2, so that the sealing performance and the moisture resistance of the whole collimator are improved, further, when the collimator is operated in a humid environment (such as outdoors), the optical elements inside the shell are not easily corroded by water vapor in the air.
As a preferred embodiment, referring to fig. 4-5, the adjusting table 1 includes a first bottom plate 11, a second bottom plate 12, a rotating shaft 13, two fixing blocks 14, two lead screws 15 and a locking member 16, the second bottom plate 12 is placed on the first bottom plate 11, one ends of the first bottom plate 11 and the second bottom plate 12 are rotatably connected through the rotating shaft 13, the two fixing blocks 14 are respectively disposed at two sides of the second bottom plate 12 and fixedly mounted on the first bottom plate 11, the two fixing blocks 14 are respectively provided with a threaded hole, the two lead screws 15 are respectively provided with a thread, each lead screw 15 is respectively connected in the corresponding threaded hole through the thread, the other end of each lead screw 15 is respectively abutted against the corresponding sidewall of the second bottom plate 12, the locking member 16 passes through the first bottom plate 11 and the second bottom plate 12, the first bottom plate 11 and the second bottom plate 12 are fixed, the locking piece 16 is loosened, and the two screw rods 15 at two sides of the second bottom plate 12 are adjusted, so that the second bottom plate 12 can be adjusted to swing left and right relative to the first bottom plate 11.
As a preferred embodiment, referring to fig. 2, the housing 2 includes a first housing 25, a second housing 26, a second housing cover 27, and a third housing 28, the second housing 26 is mounted at the rear end of the first housing 25 by a screw, the second housing cover 27 is fixedly mounted on the second housing 26 by a screw, the third housing 28 is mounted at the front end of the first housing 25 by a screw, so as to facilitate replacement or maintenance of optical elements inside the housing 2, the first housing 25 is fixedly mounted on the second base plate 12, the second base plate 12 swings left and right relative to the first base plate 11, so that the orientation angle of the entire collimator can be further adjusted, and the housing joints are provided with sealing rings and coated with sealing wax, so as to further improve the sealing performance of the joints.
As a preferred embodiment, referring to fig. 1-2, the inflation hole 22 is opened at a front end position of the first housing 25, the exhaust hole 23 is opened at a rear end position of the first housing 25, the exhaust valve 231 on the exhaust hole 23 is opened, an air pump is connected to the exhaust valve 231 to pump air out of the interior of the housing 2, so that the interior of the housing 2 is in a vacuum state, the exhaust valve 231 is closed, nitrogen gas is filled into the housing 2 through the inflation valve 221 on the inflation hole 22, and after the interior of the housing 2 is filled with nitrogen gas, the inflation valve 221 is closed, so that optical elements inside the housing 2 are in an inert gas environment, and a moisture-proof effect is improved.
As a preferred embodiment, referring to fig. 2 and 6, the nonmagnetic sealed collimator further includes a light source assembly 4, the light source assembly 4 includes a framed condenser 41, an LED lamp 42 and a support plate 43, the framed condenser 41 is fixedly installed in the second housing 26 by a screw thread, the LED lamp 42 is fixedly installed on the support plate 43, the support plate 43 is disposed inside the second housing 26 and is movable relative to the second housing 26, the LED lamp 42 is located at a rear end position of the second housing 26, the framed condenser 41 is located at a middle position of the second housing 26, a wire 421 is disposed on the LED lamp 42, the wire 421 passes through a rear end of the second housing 26 and is electrically connected to a power supply, opening and closing of the LED lamp 42 can be controlled by operating the power supply, and the support plate 43 is moved relative to the second housing 26 by adjusting the support plate 43, and further, the distance between the LED lamp 42 and the framed condenser 41 is changed so that the light emitting point of the LED lamp 42 is located at the focal point of the framed condenser 41.
As a preferred embodiment, referring to fig. 2 and 7, the nonmagnetic sealed collimator further includes an objective lens assembly 5, the objective lens assembly 5 includes a first objective lens 51, a second objective lens 52 and a third objective lens 53, the first objective lens 51 and the second objective lens 52 are integrated by gluing and fixedly mounted in the third housing 28, the third objective lens 53 is located at the rear end of the first objective lens 51 and the second objective lens 52, a gasket is arranged between the integrated first objective lens 51 and the second objective lens 52 and the third objective lens 53, and the third objective lens 53 is pressed by an elastic spacer ring, so that the generation of stress can be effectively prevented due to the elasticity of the elastic spacer ring.
As a preferred embodiment, referring to fig. 2, the sealing housing 31 is fixedly mounted at the front end of the third housing 28 by screws, and the sealing housing 31 serves to seal the housing 2 and protect the optical elements inside the third housing 28.
As a preferred embodiment, referring to fig. 2, the nonmagnetic sealing collimator further includes a framed reticle 6, the framed reticle 6 is disposed inside the second housing 26 and is fixedly mounted at the rear end of the first housing 25 through screws, and the framed reticle 6 and the objective lens assembly 5 cooperate with each other to provide infinite parallel light beams.
As a preferred embodiment, please refer to fig. 2, the nonmagnetic sealing collimator further includes a framed light homogenizing plate 7, the framed light homogenizing plate 7 is fixedly mounted inside the second housing 26 through screws, the framed light homogenizing plate 7 is located between the framed condenser 41 and the framed reticle 6, and the framed light homogenizing plate 7 is configured to homogenize light beams coming out from the framed condenser 41, so that light emitted by the light source is uniform, a uniform radiation surface is formed, and brightness values of the radiation surface are substantially consistent.
As a preferred embodiment, the adjusting table 1, the shell 2 and the sealing shell 31 are all made of non-magnetic copper materials, so that the problem that in the prior art, each supporting material of the collimator is steel or iron, the material contains magnetism, and the north-seeking precision of a magnetic needle product is influenced during north-seeking correction is solved.
For a better understanding of the present invention, the working principle of the technical solution of the present invention is explained in detail below with reference to fig. 1 to 7:
when the device is produced, the sealing shell 31 is detachably mounted at the front end of the shell 2, and the sealing lens 32 is fixedly mounted on the sealing shell 31, so that the inside of the shell 2 can be in a sealed environment, the shell 2 is sealed, and optical elements inside the shell 2 are protected, sealing rings are arranged at the joints of the first shell 25, the second shell 26, the second shell cover plate 27 and the third shell 28, and sealing wax is coated on the sealing rings, so that the sealing performance of the joints is further improved, the exhaust valve 231 on the exhaust hole 23 is opened, air inside the shell 2 is pumped by connecting an air pump to the exhaust valve 231, the inside of the shell 2 is in a vacuum state, the exhaust valve 231 is closed, and nitrogen is filled into the shell 2 through the air charging valve 221 on the air charging hole 22, in the invention, the sealing component 3 and the nitrogen gas filled into the shell 2 are mutually matched, so that the sealing performance and the moisture resistance of the whole collimator are improved, and further, when the collimator works in a humid environment (such as outdoors), the optical elements in the shell are not easily corroded by water vapor in the air, and meanwhile, the adjusting platform 1, the shell 2 and the sealing shell 31 are made of nonmagnetic copper materials, so that the problem that in the prior art, the support materials of the collimator are steel or iron, the materials contain magnetism, and the north-seeking precision of a magnetic needle product is influenced during north-seeking correction is solved.
The nonmagnetic sealing collimator provided by the invention has the following beneficial effects:
(1) when the device is produced, the sealing shell 31 is detachably mounted at the front end of the shell 2, and the sealing lens 32 is fixedly mounted on the sealing shell 31, so that the interior of the shell 2 can be in a sealed environment, the shell 2 is sealed, and optical elements in the shell 2 are protected, and sealing rings are arranged at the joints of the first shell 25, the second shell 26, the second shell cover plate 27 and the third shell 28 and are coated with sealing wax, so that the sealing performance of the joints is further improved;
(2) opening the exhaust valve 231 on the exhaust hole 23, pumping air out of the interior of the housing 2 by connecting an air pump to the exhaust valve 231, so that the interior of the housing 2 is in a vacuum state, closing the exhaust valve 231, filling nitrogen gas into the housing 2 through the inflation valve 221 on the inflation hole 22, and closing the inflation valve 221 after the interior of the housing 2 is filled with nitrogen gas, so that the optical element in the interior of the housing 2 is in an inert gas environment, and the optical element is prevented from being corroded by moisture;
(3) according to the invention, through the mutual matching of the sealing component 3 and the nitrogen gas filled into the shell 2, the sealing property and the moisture resistance of the whole collimator are improved, further, when the collimator works in a humid environment (such as outdoors), the optical elements in the shell are not easily corroded by water vapor in the air, and meanwhile, the adjusting table 1, the shell 2 and the sealing shell 31 are made of nonmagnetic copper materials, so that the problem that in the prior art, the north pointing accuracy of the collimator is influenced when the magnetic needle product is subjected to north seeking correction because each supporting material is steel or iron and the material contains magnetism is solved.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A nonmagnetic sealed collimator, comprising:
an adjusting table;
the shell is fixedly arranged on the adjusting table, a containing cavity for containing the optical element is formed in the shell, an inflation hole, an exhaust hole and a mounting port which are communicated with the containing cavity are formed in the shell, an inflation valve is arranged in the inflation hole, and an exhaust valve is arranged in the exhaust hole;
the sealing assembly comprises a sealing shell and a sealing lens, the sealing shell is detachably mounted on the shell so that the mounting hole is in an opening or closing state, a containing cavity communicated with the containing cavity is formed in the sealing shell, and the sealing lens is fixedly mounted in the containing cavity.
2. The non-magnetic sealing collimator as claimed in claim 1, wherein the adjusting table comprises a first bottom plate, a second bottom plate, a rotating shaft, two fixing blocks, two lead screws and a locking member, the second bottom plate is placed on the first bottom plate, the first bottom plate is rotatably connected with one end of the second bottom plate through the rotating shaft, the two fixing blocks are respectively arranged at two sides of the second bottom plate and are fixedly arranged on the first bottom plate, threaded holes are respectively formed in the two fixing blocks, threads are respectively arranged on the two lead screws, each lead screw is respectively connected into the corresponding threaded hole through the threads, the other end of each lead screw is respectively abutted against the corresponding side wall of the second bottom plate, the locking piece penetrates through the first bottom plate and the second bottom plate and is used for fixing the first bottom plate and the second bottom plate.
3. The non-magnetic sealing collimator as claimed in claim 2, wherein the housing comprises a first housing, a second housing cover plate and a third housing, the second housing is mounted at the rear end of the first housing by a screw, the second housing cover plate is fixedly mounted on the second housing by a screw, the third housing is mounted at the front end of the first housing by a screw, the first housing is fixedly mounted on the second base plate, and the housing joints are provided with sealing rings and coated with sealing wax.
4. The non-magnetic sealing collimator as claimed in claim 3, wherein the air-filling hole is opened at a front position of the first housing, and the air-discharging hole is opened at a rear position of the first housing.
5. The non-magnetic sealing collimator tube of claim 4, further comprising a light source assembly, wherein the light source assembly comprises a framed condenser, an LED lamp and a support plate, the framed condenser is fixedly installed in the second housing by a screw thread, the LED lamp is fixedly installed on the support plate, the support plate is disposed inside the second housing and is movable relative to the second housing, the LED lamp is located at a rear end of the second housing, the framed condenser is located at a middle position of the second housing, and a wire is disposed on the LED lamp and passes through the rear end of the second housing and is electrically connected to a power supply.
6. The magnetically sealed collimator of claim 5, further comprising an objective lens assembly including a first objective lens, a second objective lens, and a third objective lens, wherein the first objective lens and the second objective lens are bonded together by glue and fixedly mounted in the third housing, the third objective lens is fixedly mounted in the third housing, and the third objective lens is located at a rear end of the first objective lens and the second objective lens.
7. The nonmagnetic sealed collimator of claim 6, wherein the sealed housing is fixedly mounted to the front end of the third housing by screws.
8. The nonmagnetic sealed collimator of claim 7, further comprising a framed reticle disposed inside the second housing and fixedly mounted to the rear end of the first housing by screws.
9. The nonmagnetic sealed collimator tube of claim 8, further comprising a framed light homogenizing plate fixedly mounted inside the second housing by screws, the framed light homogenizing plate being located between the framed condenser lens and the framed reticle.
10. The nonmagnetic sealed collimator of claim 1, wherein the adjustment stage, the housing and the sealed housing are made of nonmagnetic copper material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210575289.4A CN114895427A (en) | 2022-05-25 | 2022-05-25 | Nonmagnetic sealing collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210575289.4A CN114895427A (en) | 2022-05-25 | 2022-05-25 | Nonmagnetic sealing collimator |
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| Publication Number | Publication Date |
|---|---|
| CN114895427A true CN114895427A (en) | 2022-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210575289.4A Pending CN114895427A (en) | 2022-05-25 | 2022-05-25 | Nonmagnetic sealing collimator |
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| CN (1) | CN114895427A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202393958U (en) * | 2011-05-16 | 2012-08-22 | 于书奎 | Novel parallel light tube |
| CN202648673U (en) * | 2012-05-29 | 2013-01-02 | 中国人民解放军空军第一航空学院 | Reflex type small-size parallel light pipe device |
| CN105425393A (en) * | 2015-12-21 | 2016-03-23 | 中国工程物理研究院应用电子学研究所 | Vacuum self-sealing optical cleaning system |
| CN114071130A (en) * | 2021-12-31 | 2022-02-18 | 中国科学院西安光学精密机械研究所 | Underwater imaging lens imaging quality parameter detection method and underwater special collimator |
-
2022
- 2022-05-25 CN CN202210575289.4A patent/CN114895427A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202393958U (en) * | 2011-05-16 | 2012-08-22 | 于书奎 | Novel parallel light tube |
| CN202648673U (en) * | 2012-05-29 | 2013-01-02 | 中国人民解放军空军第一航空学院 | Reflex type small-size parallel light pipe device |
| CN105425393A (en) * | 2015-12-21 | 2016-03-23 | 中国工程物理研究院应用电子学研究所 | Vacuum self-sealing optical cleaning system |
| CN114071130A (en) * | 2021-12-31 | 2022-02-18 | 中国科学院西安光学精密机械研究所 | Underwater imaging lens imaging quality parameter detection method and underwater special collimator |
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