CN114114669B - Translation lens type focusing waterproof eyepiece - Google Patents
Translation lens type focusing waterproof eyepiece Download PDFInfo
- Publication number
- CN114114669B CN114114669B CN202111458117.0A CN202111458117A CN114114669B CN 114114669 B CN114114669 B CN 114114669B CN 202111458117 A CN202111458117 A CN 202111458117A CN 114114669 B CN114114669 B CN 114114669B
- Authority
- CN
- China
- Prior art keywords
- eyepiece
- lens
- ocular
- hand wheel
- barrel
- 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.)
- Active
Links
- 238000003825 pressing Methods 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 4
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/001—Eyepieces
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Telescopes (AREA)
Abstract
The invention discloses a translation lens type focusing waterproof eyepiece, which mainly comprises an eyepiece cemented lens 1, an eyepiece first lens 2, an eyepiece second lens 3, an eyepiece barrel 7, an eyepiece limit screw 8, an eyepiece seat 9, an eyepiece hand wheel 10, an eyepiece cover 12, a display screen 14, a plurality of pressing rings, spacing rings and sealing rings. The eyepiece mount 9 is an assembly main body, other parts are directly or indirectly fixed on the eyepiece mount 9, and three groups of eyepiece optical lenses are fixed in the eyepiece barrel 7 through a pressing ring and a spacing ring to form an eyepiece barrel assembly. When the eyepiece hand wheel 10 is rotated, the eyepiece holder 9 is fixed, and the eyepiece barrel assembly cannot rotate along with the eyepiece hand wheel 10, but can move in parallel with the synchronous straight line, so that the parallax of an observer is compensated, and the object is clearly observed. The pressing rings and the sealing rings arranged at the movable parts separate the inside from the outside of the ocular, so that the waterproof, dustproof and sealing performances of the equipment are greatly improved, and the equipment can be used in severe environments such as heavy rain, heavy fog and dust.
Description
Technical Field
The invention relates to the technical field of optical lenses, in particular to a translational lens type focusing waterproof eyepiece.
Background
The rapidly developed visual optical instrument is rapidly applied to various fields of industry, agriculture, medicine, military and the like, and gradually becomes an indispensable part of life of people. In general, the focal position of the eyepiece optical system is changed by pulling or rotating the eyepiece frame (for example, chinese patent CN 211528798U) so that the photosensitive surface of the display screen and the focal plane of the eyepiece optical system coincide. The former focusing mode by pulling the eyepiece frame has the advantages of simple structure, convenient operation and the like, but has poor stability and weak anti-interference capability, and is very easy to cause image blurring due to external touch. The latter way of zooming by rotating the frame is simple in structure but inconvenient to use due to the rotation of the eyepiece cover with it during rotation. In addition, the first drawing type or the second rotating type has the problems of poor sealing performance and the like of related equipment, and the equipment can not be used in the environments of heavy fog, heavy rain, damp heat and the like. Therefore, it is important to develop a novel translational lens type focusing waterproof eyepiece.
Disclosure of Invention
One of the purposes of the present invention is to provide a translational lens type focusing waterproof eyepiece, which comprises a lens group, a eyepiece barrel 7, an eyepiece seat 9 and an eyepiece hand wheel 10; the eye lens barrel 7, the eye lens seat 9 and the eye lens hand wheel 10 are hollow tubular; the eyepiece group is fixed inside the eyepiece barrel 7, and the formed eyepiece barrel assembly is movably arranged inside the eyepiece base 9; the inner surface of the eyepiece hand wheel 10 is in threaded connection transmission with the outer surface of the eyepiece seat 9, and one end (the right side is close to the end B) of the eyepiece hand wheel 10 is clamped on the eyepiece barrel 7 and can rotate freely; during focusing, the eyepiece hand wheel 10 is rotated to enable the eyepiece hand wheel 10 to spirally advance or retreat, and the eyepiece hand wheel 10 drives the eyepiece barrel assembly to synchronously linearly translate to realize zooming.
Further, the eyepiece further comprises an eyepiece stop screw 8. One end of an eyepiece limiting screw 8 is fixed on the eyepiece base 9, and the other end of the eyepiece limiting screw is inserted into a limiting groove on the surface of the eyepiece barrel 7 to prevent the eyepiece barrel 7 from falling out in the forward and backward translation process.
Further, the number of the eyepiece limit screws 8 is 2, the eyepiece limit screws 8 are symmetrically distributed on the surface of the eyepiece base 9, and the eyepiece limit screws 8 are fixed on the eyepiece base 9 through threads.
Further, the lens group comprises an ocular second lens 3, an ocular cemented lens 1 and an ocular first lens 2 which are coaxially arranged in sequence; wherein both sides of the eyepiece second lens 3 are respectively fixed in the eyepiece barrel 7 through the eyepiece pressing ring 4 and the eyepiece first spacing ring 5, both sides of the eyepiece cemented lens 1 are respectively fixed in the eyepiece barrel 7 through the eyepiece first spacing ring 5 and the eyepiece second spacing ring 6, and both sides of the eyepiece first lens 2 are respectively fixed in the eyepiece barrel 7 through the eyepiece second spacing ring 6 and steps at the end (near the end B) of the eyepiece barrel 7. The eyepiece pressing ring and the eyepiece spacer play a role in fixing each lens on one hand, so that the relative positions of the three lenses are not changed during zooming, and on the other hand, the eyepiece pressing ring and the eyepiece spacer play a role in sealing.
Further, the eyepiece lens 1 is formed by combining 1 convex lens and 1 concave lens; the first eyepiece lens 2 is 1 convex lens, and the convex surface of the first eyepiece lens is opposite to the convex lens of the bonding eyepiece lens 1; the eyepiece second lens 3 is specifically 1 convex lens, and the convex surface of the eyepiece second lens is opposite to the concave lens of the eyepiece cemented lens 1.
Furthermore, the eyepiece pressing ring 4, the eyepiece first spacer 5 and the eyepiece second spacer 6 are all circular, the contact surface of the eyepiece pressing ring 4 and the eyepiece second lens 3 is a right-angle step, and the inner surfaces of the eyepiece first spacer 5 and the eyepiece second spacer 6 are inclined surfaces.
Further, the eyepiece hand wheel 10 and the eyepiece seat 9 are connected and driven through multi-thread threads.
Further, the eyepiece further comprises an eyepiece hand wheel pressing ring 11, an eyepiece cover 12 and an eyepiece cover pressing ring 13; the eyepiece hand wheel pressing ring 11 is fixed on the screw thread at the end (near the end B) of the eyepiece barrel 7 and is glued and fixed, and is used for pressing the eyepiece hand wheel 10 and sealing the gap between the eyepiece hand wheel and the eyepiece barrel 7; the eyepiece cover pressing ring 13 is fixed on the inner surface of the end part (near the end B) of the eyepiece barrel 7 through threads, a clamping groove is formed in the outer periphery of the body, extending out of the eyepiece barrel 7, of the eyepiece cover pressing ring 13, and the eyepiece cover 12 is clamped in the clamping groove of the eyepiece cover pressing ring 13 through the clamping jaw of the end part.
Further, the eyepiece further comprises at least three sealing rings; wherein the inner surface of the eyepiece hand wheel 10 and the outer surface of the eyepiece seat 9 are in clearance fit, and an O-shaped sealing ring II 16 is arranged between the inner surface and the outer surface; the inner surface of the eyepiece hand wheel 10 and the outer surface of the eyepiece barrel 7 are in clearance fit, and an O-shaped sealing ring III 17 is arranged between the inner surface and the outer surface; the eyepiece mount 9 and the external device connection surface are provided with an O-ring I15.
Further, the eyepiece further includes an external device display screen 14, said display screen 14 being fixed at the end (near the a-end) of the eyepiece holder 9 and coaxial with the lens group for viewing the image information output by the device.
Further, all the screwed connection parts of the ocular are coated with sealant so as to enhance the sealing effect.
Compared with the traditional drawing type rotary lens, the technical scheme of the invention has the following beneficial effects: (1) The rotary motion of the ocular handwheel is converted into the front-back translational motion of the whole ocular lens barrel assembly, so that the operation is more convenient, and the good sealing effect is easier to realize; (2) The whole equipment has simple structure, convenient use and low manufacturing cost; (3) Through setting up the sealing washer at each key junction, the retooling is glued to the sealed, and inside effectual entering eyepiece such as prevention steam, dust for whole equipment can use under complicated, adverse conditions such as salt fog, raise dust, drenching rain, damp and hot, and the reliability is better.
Drawings
FIG. 1 is a cross-sectional view of an eyepiece according to the present invention (the cross-section being in the plane of the central axis);
FIG. 2 is a schematic view of a lens assembly;
fig. 3 is a perspective view of a eyepiece barrel;
FIG. 4 is a schematic cross-sectional view of an eyepiece;
FIG. 5 is a schematic perspective view of an eyepiece mount;
fig. 6 is a schematic diagram of an eyepiece.
The device comprises a 1-eyepiece cemented lens, a 2-eyepiece first lens, a 3-eyepiece second lens, a 4-eyepiece pressing ring, a 5-eyepiece first spacer ring, a 6-eyepiece second spacer ring, a 7-eyepiece barrel, an 8-eyepiece limit screw, a 9-eyepiece seat, a 10-eyepiece hand wheel, an 11-eyepiece hand wheel pressing ring, a 12-eyepiece cover, a 13-eyepiece cover pressing ring, a 14-OLED display screen, a 15-sealing ring I, a 16-sealing ring II and a 17-sealing ring III.
Detailed Description
In order to make the technical scheme and the beneficial effects of the present invention fully understood by those skilled in the art, the following description is further made with reference to specific embodiments and drawings.
The translational lens type focusing waterproof ocular shown in the attached figures 1-6 mainly comprises an ocular cemented lens 1, an ocular first lens 2, an ocular second lens 3, an ocular clamping ring 4, an ocular first spacing ring 5, an ocular second spacing ring 6, an ocular barrel 7, an ocular limiting screw 8, an ocular seat 9, an ocular hand wheel 10, an ocular hand wheel clamping ring 11, an ocular cover 12, an ocular cover clamping ring 13, an OLED display screen 14, a sealing ring I15, a sealing ring II 16 and a sealing ring III 17. The eyepiece mount 9 is an assembly body that remains stationary during focusing, and other components are directly or indirectly fixed to the eyepiece mount 9.
As can be seen from fig. 1, the eyepiece cement lens 1 is formed by combining 1 convex lens and 1 concave lens, the eyepiece first lens 2 is 1 convex lens, and the eyepiece second lens 3 is 1 convex lens. An eyepiece first spacer ring 5 and an eyepiece second spacer ring 6 are respectively arranged between the eyepiece second lens 3 and the eyepiece cemented lens 1 and between the eyepiece cemented lens 1 and the eyepiece first lens 2, a right-angle stepped eyepiece press ring 4 is arranged on the left side of the eyepiece second lens 3, and the right side of the eyepiece first lens 2 is pressed on a right-angle step in the eyepiece barrel 7, so that three lenses are locked and sealed in the eyepiece barrel 7 to form the eyepiece barrel assembly. The eyepiece tube assembly is coaxially sleeved in the eyepiece holder 9 from right to left, and a part of the eyepiece tube assembly is left outside, an eyepiece hand wheel 10 is sleeved outside the eyepiece holder 9, and the eyepiece hand wheel 10 is connected with the eyepiece holder 9 through multi-thread threads (coated with lubricating grease) for transmission. The right end (end B) of the eyepiece hand wheel 10 extends outwards to partially sleeve the eyepiece barrel 7, and is connected with the eyepiece barrel 7 through a clamping structure (a circle part, a step and an eyepiece hand wheel pressing ring 11 in the figure) at the right end to realize linkage. An OLED display screen 14 is connected with the side surface (end A) of the eyepiece holder 9 in a sealing way.
When the eyepiece hand wheel 10 is rotated, the eyepiece base 9 is not moved, and the tail part (the black oval ring in fig. 1) of the eyepiece hand wheel 10 is clamped left and right by the eyepiece barrel 7 and the eyepiece hand wheel pressing ring 11, so that the eyepiece hand wheel 10 can only rotate leftwards or rightwards in a spiral manner under the action of the threads, and the eyepiece barrel 7 and lenses in the eyepiece barrel 7 can not rotate but can move left and right in parallel with synchronization, thereby conveniently and quickly performing parallax compensation. When the eyepiece barrel 7 translates to contact with the eyepiece limiting screw 8, the maximum position (namely the edge of the limiting groove on the surface of the eyepiece barrel 7) is reached, and at the moment, the eyepiece hand wheel 10 cannot be continuously rotated in the original direction, and only the reverse rotation is possible.
In order to ensure the waterproof, dustproof and sealing effects, the following multiple sealing measures are adopted: 1. a sealant is coated at the joint of the eyepiece barrel 7 and the eyepiece first lens 2; 2. the lens barrel is internally provided with an eyepiece pressing ring 4, an eyepiece first spacing ring 5 and an eyepiece second spacing ring 6 for fixing and sealing each lens, so that dust is prevented from entering the inside of the eyepiece; 3. the inner surface of the eyepiece hand wheel 10 is in clearance fit with the outer surface of the eyepiece holder 9 and the outer surface of the eyepiece barrel 7, and sealing rings with different specifications are fixedly arranged between the eyepiece holder 9 and the connecting surface of the display screen of the external equipment.
The translational lens type focusing waterproof eyepiece is designed and produced, and the waterproof performance of a detected sample reaches the IP6 level.
Claims (6)
1. The utility model provides a translation lens formula focusing waterproof eyepiece which characterized in that: the ocular comprises a lens group, an ocular tube (7), an ocular seat (9), an ocular hand wheel (10), an ocular hand wheel clamping ring (11), an ocular cover (12) and an ocular cover clamping ring (13); the lens group comprises an ocular second lens (3), an ocular cemented lens (1) and an ocular first lens (2) which are coaxially arranged in sequence; wherein, two sides of the ocular second lens (3) are respectively fixed in the ocular tube (7) through the ocular pressing ring (4) and the ocular first spacing ring (5), two sides of the ocular cemented lens (1) are respectively fixed in the ocular tube (7) through the ocular first spacing ring (5) and the ocular second spacing ring (6), and two sides of the ocular first lens (2) are respectively fixed in the ocular tube (7) through the ocular second spacing ring (6) and steps at the end part of the ocular tube (7); the eyepiece pressing ring (4), the eyepiece first spacing ring (5) and the eyepiece second spacing ring (6) are all in a circular ring shape, the contact surface of the eyepiece pressing ring (4) and the eyepiece second lens (3) is a right-angle step, and the inner surfaces of the eyepiece first spacing ring (5) and the eyepiece second spacing ring (6) are inclined surfaces; the eyepiece cemented lens (1) is formed by combining 1 convex lens and 1 concave lens; the first eyepiece lens (2) is specifically 1 convex lens, and the convex surface of the first eyepiece lens is opposite to the convex lens of the bonding eyepiece lens (1); the second eyepiece lens (3) is specifically 1 convex lens, and the convex surface of the second eyepiece lens is opposite to the concave lens of the cemented eyepiece lens (1); the eye lens barrel (7), the eye lens seat (9) and the eye lens hand wheel (10) are hollow tubular; the lens group is fixed in the eyepiece tube (7), and the formed eyepiece tube assembly is movably arranged in the eyepiece holder (9); the inner surface of the ocular hand wheel (10) is in threaded connection transmission with the outer surface of the ocular seat (9), and one end of the ocular hand wheel (10) is clamped on the ocular tube (7) and can rotate freely; the eyepiece hand wheel pressing ring (11) is fixed on threads at the end part of the eyepiece barrel (7) and is glued and fixed, and is used for pressing the eyepiece hand wheel (10) and sealing a gap between the eyepiece hand wheel and the eyepiece barrel (7); the eyepiece cover pressing ring (13) is fixed on the inner surface of the end part of the eyepiece barrel (7) through threads, a clamping groove is formed in the periphery of the body, extending out of the eyepiece barrel (7), of the eyepiece cover pressing ring (13), and the eyepiece cover (12) is clamped in the clamping groove of the eyepiece cover pressing ring (13) through the clamping jaw at the end part; during focusing, the eyepiece hand wheel (10) is rotated to enable the eyepiece hand wheel (10) to spirally advance or retreat, and the eyepiece hand wheel (10) drives the eyepiece barrel assembly to synchronously linearly translate to realize zooming.
2. A translating lens focus waterproof eyepiece as recited in claim 1, wherein: the eyepiece also comprises an eyepiece limiting screw (8), one end of the eyepiece limiting screw is fixed on the eyepiece base (9), and the other end of the eyepiece limiting screw is inserted into a limiting groove on the surface of the eyepiece barrel (7) to prevent the eyepiece barrel (7) from falling out in the front-back translation process.
3. A translating lens focus waterproof eyepiece as recited in claim 2, wherein: the number of the ocular limiting screws (8) is 2, the ocular limiting screws are symmetrically distributed on the surface of the ocular base (9), and the ocular limiting screws (8) are fixed on the ocular base (9) through threads.
4. A translating lens focus waterproof eyepiece as recited in claim 1, wherein: the ocular hand wheel (10) and the ocular seat (9) are connected and driven through multi-thread threads.
5. A translating lens focus waterproof eyepiece as recited in claim 1, wherein: the eyepiece further comprises at least three sealing rings; wherein the inner surface of the eyepiece hand wheel (10) and the outer surface of the eyepiece seat (9) are in clearance fit, and an O-shaped sealing ring II (16) is arranged between the inner surface and the outer surface; the inner surface of the eyepiece hand wheel (10) and the outer surface of the eyepiece barrel (7) are in clearance fit, and an O-shaped sealing ring III (17) is arranged between the inner surface and the outer surface; an O-shaped sealing ring I (15) is arranged on the connecting surface of the eyepiece seat (9) and external equipment.
6. A translating lens focus waterproof eyepiece as recited in claim 1, wherein: the eyepiece further comprises an external device display screen fixed at the end of the eyepiece holder (9) and coaxial with the lens group for viewing the image information output by the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111458117.0A CN114114669B (en) | 2021-12-02 | 2021-12-02 | Translation lens type focusing waterproof eyepiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111458117.0A CN114114669B (en) | 2021-12-02 | 2021-12-02 | Translation lens type focusing waterproof eyepiece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114114669A CN114114669A (en) | 2022-03-01 |
| CN114114669B true CN114114669B (en) | 2024-02-09 |
Family
ID=80365228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111458117.0A Active CN114114669B (en) | 2021-12-02 | 2021-12-02 | Translation lens type focusing waterproof eyepiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114114669B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206804966U (en) * | 2017-04-04 | 2017-12-26 | 项国飞 | Waterproof eyepiece |
| CN207336970U (en) * | 2017-11-08 | 2018-05-08 | 南京诺思光电仪器有限公司 | Vision auxiliary equipment |
| CN213021221U (en) * | 2020-06-05 | 2021-04-20 | 河北汉光重工有限责任公司 | Focusing limiting waterproof eyepiece |
| CN214409447U (en) * | 2021-02-01 | 2021-10-15 | 武汉振光科技有限公司 | High-magnification imaging eyepiece structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8587711B2 (en) * | 2012-02-23 | 2013-11-19 | Paul S Anderson | Smartphone user interface viewfinder system |
-
2021
- 2021-12-02 CN CN202111458117.0A patent/CN114114669B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206804966U (en) * | 2017-04-04 | 2017-12-26 | 项国飞 | Waterproof eyepiece |
| CN207336970U (en) * | 2017-11-08 | 2018-05-08 | 南京诺思光电仪器有限公司 | Vision auxiliary equipment |
| CN213021221U (en) * | 2020-06-05 | 2021-04-20 | 河北汉光重工有限责任公司 | Focusing limiting waterproof eyepiece |
| CN214409447U (en) * | 2021-02-01 | 2021-10-15 | 武汉振光科技有限公司 | High-magnification imaging eyepiece structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114114669A (en) | 2022-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2428719A (en) | Adjustable lens mount | |
| CN103364932B (en) | Medium-wave infrared refrigerated lens with long focal length and large aperture | |
| CN111854605A (en) | Test instrument based on cloud calculates | |
| CN114114669B (en) | Translation lens type focusing waterproof eyepiece | |
| CN203502666U (en) | CCD conversion interface lens | |
| CN116634122B (en) | Binocular camera | |
| CN211627911U (en) | Camera optical lens | |
| CN210534418U (en) | High-resolution industrial lens | |
| CN213021221U (en) | Focusing limiting waterproof eyepiece | |
| CN209946519U (en) | Novel telescope laser guide star accessory | |
| CN209690587U (en) | Infrared continuous zoom lens zoom mechanism based on straight-line motion mechanism | |
| CN104076478A (en) | Space target detection lens focusing system | |
| CN217404599U (en) | High-precision lens convenient to assemble | |
| CN103336354B (en) | Miniaturized, strong light power, high multiple proportion, hand-operated and three-variable pick-up lens | |
| CN203705788U (en) | Zoom infrared lighting device and infrared camera including same | |
| CN215526227U (en) | High-precision multifunctional astronomical telescope | |
| CN203422523U (en) | Medium-wave infrared refrigeration type long-focus large-diameter lens | |
| CN212905659U (en) | Optical imaging lens | |
| CN211826671U (en) | Infrared lens focusing device | |
| CN203405619U (en) | Ocular lens interpupillary distance adjusting device used for operation microscope | |
| CN220170073U (en) | Division image conversion zoom structure with parallax correction function | |
| CN212207933U (en) | Lens focusing device and imaging equipment | |
| CN114185147A (en) | Zoom lens structure capable of guaranteeing consistency of optical axes | |
| CN209417393U (en) | A kind of coaxial focusing type waterproof telescope | |
| CN217929980U (en) | Zoom eyepiece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 432000 No. 1 Aerospace Avenue, Xiaogan City, Hubei Province Applicant after: Hubei Huazhong Changjiang Photoelectric Technology Co.,Ltd. Address before: 432000 No. 199 long march road, Hubei, Xiaogan Applicant before: HUBEI HUAZHONG PHOTOELECTRIC SCIENCE AND TECHNOLOGY Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |