CN213338171U - Lens fixing device and optical lens thereof - Google Patents
Lens fixing device and optical lens thereof Download PDFInfo
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- CN213338171U CN213338171U CN202022325657.9U CN202022325657U CN213338171U CN 213338171 U CN213338171 U CN 213338171U CN 202022325657 U CN202022325657 U CN 202022325657U CN 213338171 U CN213338171 U CN 213338171U
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Abstract
The utility model discloses a lens fixing device and an optical lens thereof, the lens fixing device comprises a lens cone and a pressing mechanism used for fixing a plurality of groups of lenses in the lens cone, the pressing mechanism comprises at least three pressing rings and at least one space ring, the space ring is used for limiting the distance between two adjacent groups of lenses, and the two ends of one space ring respectively support against the lens cone and a first group of lenses close to the object plane side; the pressing ring is positioned in the lens cone and connected with the lens cone, one end of the pressing ring is a free end, and the other end of the pressing ring is abutted against at least one group of lenses; the pressing ring is also provided with a glue storage groove; the lens cone or the pressing ring is provided with glue dispensing holes which are respectively and correspondingly communicated with the glue storage grooves. This application has improved each lens axiality, has reduced accumulative total error and interval tolerance between the lens, and structural stability is high with the equipment yield of assembling, and difficult equipment is cracked, be convenient for installation and debugging and reprocess, and the imaging quality of equipment optical lens is higher, optical property is more stable, is particularly useful for the equipment of long barrel camera lens.
Description
Technical Field
The utility model belongs to the technical field of the camera lens equipment, concretely relates to lens fixing device and optical lens thereof.
Background
In the common structure of an optical lens assembly of an optical lens in the prior art, when lenses are assembled to a main cylinder, the space between the lenses is controlled by spacer rings, the lenses depend on each other, and finally a pressing ring is screwed in to fix the lenses. This structure assembly mode exists that the spacer ring overlength is out of shape easily and is caused the lens degree of inclination big, and lens spacer ring accumulative total part is more simultaneously, and interval tolerance is accumulative more greatly, the performance is unstable more between the lens, and uses the clamping ring to fix the equipment component in camera lens both ends under this condition, is difficult to guarantee the equipment component fastness, thereby the optical property of product is influenced to the easy not hard up aversion of vibration back.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the above-mentioned problem, a lens fixing device and optical lens thereof is proposed, use different clamping rings to fix respectively to the lens, and through space ring adjustment lens interval, the axiality of lens has been improved, and accumulated error and interval tolerance between each lens have been reduced, higher structural stability has and assemble into the product rate, can avoid the accumulated error to cause the lens equipment cracked excessively, be convenient for installation and debugging, reduce the maintenance cost, and the optical lens's through this lens fixing device equipment image quality is higher, optical property is more stable, be particularly useful for the installation of long tube camera lens.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a pair of lens fixing device, including lens cone and the hold-down mechanism who is used for multiunit lens in the fixed lens cone, hold-down mechanism includes at least three clamping ring and at least one space ring, wherein:
the outer side wall of the space ring is matched with the inner side wall of the lens barrel, the space ring is positioned between the two adjacent groups of lenses and used for limiting the distance between the two adjacent groups of lenses, and two ends of one space ring respectively abut against the lens barrel and the first group of lenses close to the object plane side;
the pressing rings are positioned in the lens cone and connected with the lens cone, one end of each pressing ring is a free end, and the other end of each pressing ring abuts against at least one group of lenses and is used for fixing the lenses in the lens cone respectively;
the middle part of the outer side wall of the pressing ring is also provided with a glue storage groove;
and the lens cone or the pressing ring is also provided with glue dispensing holes which are respectively and correspondingly communicated with the glue storage grooves.
Preferably, the glue dispensing holes corresponding to the glue storage grooves of the pressing rings at the two ends of the lens barrel are respectively formed in the end portions of the corresponding pressing rings, and the glue dispensing holes corresponding to the glue storage grooves of the other pressing rings are formed in the side wall of the lens barrel.
Preferably, the number of the space rings is two or more, two ends of one space ring respectively abut against the lens barrel and the first group of lenses close to the object plane side, and two ends of the other space rings respectively abut against two adjacent groups of lenses with the spacing smaller than the specified range.
Preferably, the pressing ring is connected with the lens barrel in a threaded manner.
Preferably, the pressing ring and the spacing ring are both arranged coaxially with the lens barrel.
An optical lens comprises the lens fixing device and a plurality of groups of lenses which are arranged in a lens barrel and fixed by a pressing ring.
Preferably, the optical lens adopts a two-end assembling mode to assemble the plurality of groups of lenses.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the lenses are respectively fixed by using different pressing rings, so that the coaxiality of the lenses is improved, mutual abutting between the lenses and the accumulated error and interval tolerance between the lenses are reduced, the assembly fragmentation of the lenses caused by overlarge accumulated error can be avoided, and the structural stability and the assembly yield are higher;
2) the spacing tolerance between the first group of lenses close to the object surface side and the adjacent lenses is compensated by the spacing rings of the first group of lenses close to the object surface side and the lens cone, so that the optical performance is convenient to install, debug and guarantee, the problem of difficult repair caused by debugging after complete fixation is avoided, and the repair and debugging efficiency of the lens is improved;
3) the optical lens assembled by the lens fixing device has higher imaging quality and more stable optical performance, and is particularly suitable for the installation of a long-tube lens.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Description of reference numerals: 11. a first lens; 12. a first lens glue set; 13. a second lens glue set; 14. a second lens; 15. a third lens gluing group; 16. a fourth lens gluing group; 21. a first clamping ring; 22. a second clamping ring; 23. a third clamping ring; 24. a fourth clamping ring; 25. a fifth clamping ring; 31. a first space ring; 32. a second space ring; 41. a lens barrel; 42. a first dispensing hole; 43. a second dispensing hole; 44. and (6) a third glue hole.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
As shown in fig. 1, a lens fixing device includes a lens barrel 41 and a pressing mechanism for fixing multiple groups of lenses in the lens barrel 41, the pressing mechanism includes at least three pressing rings and at least one spacer ring, wherein:
the outer side wall of the space ring is matched with the inner side wall of the lens barrel 41, the space ring is positioned between two adjacent groups of lenses and used for limiting the distance between the two adjacent groups of lenses, and two ends of one space ring respectively abut against the lens barrel 41 and a first group of lenses close to the object plane side;
the pressing rings are positioned in the lens cone 41 and connected with the lens cone 41, one end of each pressing ring is a free end, and the other end of each pressing ring abuts against at least one group of lenses and is used for fixing the lenses in the lens cone 41 respectively;
the middle part of the outer side wall of the pressing ring is also provided with a glue storage groove;
the lens cone 41 or the pressing ring is further provided with glue dispensing holes correspondingly communicated with the glue storage grooves respectively.
The lens fixing device comprises a lens barrel 41 and a pressing mechanism used for fixing multiple groups of lenses in the lens barrel 41, the pressing mechanism comprises at least three pressing rings and at least one space ring, the outer side wall of each space ring is matched with the inner side wall of the lens barrel 41, coaxiality can be guaranteed, and the space between two adjacent groups of lenses is limited. One of the spacers is disposed between the lenses at the key position, that is, the two ends of the spacer respectively abut against the lens barrel 41 and the first group of lenses close to the object plane side, so as to facilitate assembling and debugging of the lenses. The clamping rings are located in the lens barrel 41 and connected with the lens barrel 41, one end of each clamping ring is a free end, the other end of each clamping ring abuts against at least one group of lenses and is used for fixing the lenses in the lens barrel 41 respectively, and each clamping ring is matched with a corresponding aperture section on the lens barrel 41 independently and is connected and fixed with the lens barrel 41. Store up gluey recess and set up in the lateral wall middle part of clamping ring, store up the clamping ring outer wall outside gluey recess and the cooperation of lens cone 41, be convenient for the storage and the flow of colloid, avoid overflowing to pollute the lens and influence optical properties. And store up gluey recess and correspond the some hole settings of gluing of intercommunication, the installation of being convenient for is glued the back and is glued, prevents not hard up, helps further improving device stability and life.
This application uses a plurality of clamping rings to fix the lens respectively, the structure is more firm stable, and adjust the lens interval through the spacer ring, be convenient for to the regulation of key point lens, the accessible is every batch the batch nature of other parts carries out spacer ring size adjustment, if according to the median of different batches of lens barrels 41 or lenses carry out batch calibration to the theoretical value through adjusting spacer ring thickness, if within 0.10mm, guarantee the interval of all lenses, in order to ensure that lens and adjacent lens near the object plane side are in less state like the interval of first lens 11 and first lens veneer 12, satisfy optical performance index, help improving the yields. The lens spacer ring has the advantages that coaxiality and interval tolerance of the lenses are guaranteed, mutual leaning between the lenses is reduced, accumulated errors are reduced, assembly fragmentation of the lenses caused by overlarge accumulated errors is avoided, installation and maintenance are facilitated, the influence of overlarge accumulated errors of the lens spacer ring on optics in the prior art is effectively avoided, installation accuracy and product yield are improved, optical technical indexes are achieved, and the lens spacer ring is particularly suitable for being used in batch production or long-tube lens installation.
Further, in this embodiment, the pressing ring is used for compressing and fixing six groups of lenses, the pressing ring includes a first pressing ring 21, a second pressing ring 22, a third pressing ring 23, a fourth pressing ring 24 and a fifth pressing ring 25, the lens barrel 41 is provided with a through stepped hole along the axial direction, the aperture section of the stepped hole is respectively matched and limited with the corresponding pressing ring, spacer ring or each group of lenses, for example, the lens barrel 41 is provided with six groups of lenses including a first lens 11, a first lens gluing group 12, a second lens gluing group 13, a second lens 14, a third lens gluing group 15 and a fourth lens gluing group 16 in sequence from the object plane to the image plane, and the lens gluing groups are glued two by two. Specifically, the right end of the first lens 11 close to the object plane side abuts against the corresponding stepped surface of the lens barrel 41 through the first spacer 31, the left end abuts against and is fixed by the first pressing ring 21, the first spacer 31 is arranged between the first lens 11 and the first lens glue combination 12, the right end abuts against the lens barrel 41, and the left end abuts against the image plane side of the first lens 11; the first lens gluing group 12 and the second lens gluing group 13 share the second pressing ring 22 to be pressed and fixed, the space between the first lens gluing group 12 and the second lens gluing group 13 is limited by a spacing ring, the first lens gluing group 12 and the second lens gluing group 13 can be respectively pressed and fixed by the pressing ring, and the lens fixing device is only provided with one spacing ring; the right end of the second lens 14 abuts against the corresponding stepped surface of the lens barrel 41, and the left end abuts against and is fixed through the third pressing ring 23; the left end of the third lens gluing group 15 abuts against the corresponding stepped surface of the lens cone 41, and the right end abuts against and is fixed through the fourth pressing ring 24; the left end of the fourth lens gluing set 16 close to the image plane side abuts against the corresponding stepped surface of the lens barrel 41, and the right end abuts against and is fixed by the fifth pressing ring 25. Be different from the big assembly methods of lens each other dependence accumulative total error among the prior art, if only adopt two clamping rings at both ends fixed, this application adjustment is fixed alone for five clamping rings, and the slope minimum of lens equipment is ensured to the equipment fastness of reinforcing lens, can bear leaning on to the terminal surface milling plane to the great lens of spherical radius R value. Specifically, in the present embodiment, when the first spacer 31 is not provided, the spacing tolerance of each two groups of lenses from the object plane side to the image plane side is 0.23mm, 0.07mm, 0.1mm and 0.07mm, and after the first spacer 31 is provided to compensate the spacing tolerance between the first lens 11 and the first lens gluing group 12 to be less than 0.1mm, the maximum spacing tolerance of each two groups of lenses becomes the tolerance of the second lens gluing group 13 and the second lens 14, that is, the sum of the lens barrel bearing surface tolerance of the second lens gluing group 13, the height tolerance of the second lens gluing group 13, the thickness tolerance of the second lens 14 and the lens barrel bearing surface tolerance of the second lens 14 is 0.1 mm. The inside lens cone uses many gears separately to cooperate with lens, clamping ring cooperation internal diameter, has avoided lens cone internal diameter overlength to be difficult to the stability of guaranteeing processing and the risk of machining precision, and then guarantees the axiality of each component equipment, improves the equipment precision.
It should be noted that the pressing rings may also be adjusted in number or structure according to any number of groups or shape of lenses in actual situations, each pressing ring may be used to press and fix one or more groups of lenses, each group of lenses may be an individual lens or a lens gluing group formed by gluing any number of lenses, for example, in this embodiment, six pressing rings may be used to fix each group of lenses, and each group of lenses is set independently.
In an embodiment, the dispensing holes corresponding to the glue storage grooves of the pressing rings located at the two ends of the lens barrel 41 are respectively disposed at the end portions of the corresponding pressing rings, and the dispensing holes corresponding to the glue storage grooves of the other pressing rings are disposed on the side wall of the lens barrel 41.
In the pressing rings located at two ends of the lens barrel 41 in this embodiment, the dispensing holes corresponding to the glue storage grooves are respectively disposed at the ends of the corresponding pressing rings, for example, the dispensing hole corresponding to the glue storage groove of the first pressing ring 21 is disposed at the left end of the first pressing ring 21, the dispensing hole corresponding to the glue storage groove of the fifth pressing ring 25 is disposed at the right end of the fifth pressing ring 25, and the dispensing holes corresponding to the glue storage grooves of the remaining pressing rings are disposed on the side wall of the lens barrel 41. It should be noted that the dispensing holes corresponding to the glue storage grooves of the first pressing ring 21 and the fifth pressing ring 25 may also be formed on the side wall of the lens barrel 41.
In an embodiment, two or more spacing rings are provided, wherein two ends of one spacing ring respectively abut against the lens barrel 41 and the first group of lenses close to the object plane side, and two ends of the other spacing rings respectively abut against two adjacent groups of lenses with a spacing smaller than a specified range.
When the number of the space rings is two or more, two ends of one space ring respectively abut against the lens barrel 41 and the first group of lenses close to the object plane side, and two ends of the other space rings respectively abut against two adjacent groups of lenses with the spacing smaller than the specified range. In this embodiment, there are two spacers, namely, a first spacer 31 and a second spacer 32. The first spacer 31 is disposed between the first lens 11 and the first lens gluing assembly 12, and the right end of the first spacer abuts against the lens barrel 41, and the left end of the first spacer abuts against the image plane side of the first lens 11. Because first lens veneer gluing group 12 and second lens veneer gluing group 13 optics interval is less, for the fixed optics demand of guaranteeing of lens installation, second spacer ring 32 both ends support respectively to lean on between first lens veneer gluing group 12 and the second lens veneer gluing group 13. The spacing tolerance between the first lens 11 and the first lens gluing group 12 can be adjusted by the batch size of other parts in each batch, for example, the thickness of the first spacing ring 31 is adjusted to a theoretical value, for example, within 0.10mm, according to the median value of lens barrels 41 or lenses in different batches, so as to ensure the spacing between all lenses and meet the requirement of optical design.
It should be noted that the second space ring 32 in this embodiment may also be disposed between any two adjacent lens sets, such as between the second lens gluing set 13 and the second lens 14, and a plurality of space rings whose two ends respectively abut against the two adjacent lens sets may also be disposed according to actual requirements, and is also suitable for the case where the diameter difference between the two adjacent lens sets and the stepped holes of the corresponding lens barrels 41 is small.
In one embodiment, the pressing ring is connected to the lens barrel 41 by a screw.
In this embodiment, the outer wall of one side of the pressing ring is in threaded connection with the lens barrel 41, and the inner wall of the lens barrel 41 has a threaded section for screwing the pressing ring. The outer wall of the other side of the pressing ring is matched with the inner wall of the lens cone 41 to ensure the assembly coaxiality, and the lens groups are fixed separately. It should be noted that, the connection between the pressing ring and the lens barrel 41 may also adopt other connection methods commonly used by those skilled in the art, for example, a corresponding threaded hole is formed in the side wall of the lens barrel 41, and the lens barrel is connected and fixed by a set screw.
In one embodiment, the pressing ring and the spacer are both disposed coaxially with the lens barrel 41.
The pressing ring and the spacing ring are coaxially arranged with the lens barrel 41, so that the lens can be conveniently adjusted, the reference is unified, and the coaxiality is favorably improved.
An optical lens includes the lens fixing device of any of the above embodiments, and further includes a plurality of groups of lenses disposed in the lens barrel 41 and fixed by a pressing ring.
The optical lens assembled by the lens fixing device has higher imaging quality and more stable optical performance, and is particularly suitable for the installation of a long-cylinder type lens.
In one embodiment, the optical lens is assembled by assembling a plurality of lens groups at two ends.
In this embodiment, the lens barrel 41 is an integrated structure, the optical lens adopts two ends to assemble a plurality of groups of lenses separately, and the corresponding pressing ring and the corresponding spacing ring are respectively assembled into the lens barrel 41 to position each group of lenses, the installation depth of each assembly element is moderate, the assembly difficulty is reduced, the operability is improved, and the optical lens is particularly suitable for the assembly of a long barrel type lens. It should be noted that the optical lens may be assembled by assembling the lens at one end.
Further, in this embodiment, the first lens 11, the first lens gluing group 12, the second lens gluing group 13, and the second lens 14 are assembled from the object side of the lens barrel 41 in the following order, the second lens 14 is assembled into the lens barrel 41, the outer side wall of the second lens 14 is matched with a corresponding stepped hole of the lens barrel 41 to ensure the coaxiality of the second lens 14, the third pressing ring 23 is screwed to fix the second lens 14, and the left side of the outer side wall of the third pressing ring 23 is matched with the lens barrel 41 to ensure the coaxiality of the third pressing ring 23 after being screwed; assembling the second lens gluing group 13 into the lens cone 41, wherein the outer side wall of the second lens gluing group 13 is matched with a corresponding stepped hole of the lens cone 41 to ensure that the second lens gluing group 13 is coaxial, the second space ring 32 is assembled to abut against the second lens gluing group 13, and the second space ring 32 is matched with the corresponding stepped hole of the lens cone 41 to ensure that the space ring is coaxial when assembled; assembling the first lens gluing group 12 into the lens cone 41 to abut against the spacer 32, wherein the first lens gluing group 12 is matched with a stepped hole corresponding to the lens cone 41 to ensure the first lens gluing group 12 to be coaxial, the second pressing ring 22 is screwed and fixed on the first lens gluing group 12, the second spacer 32 and the second lens gluing group 13, and the outer side wall of the second pressing ring 22 is matched with the stepped hole corresponding to the lens cone 41 to ensure the second pressing ring 22 to be coaxial after being screwed; the first space ring 31 is assembled in the lens barrel 41, the right end of the first space ring abuts against the step surface of the stepped hole of the lens barrel 41, the outer side wall of the first space ring is matched with the corresponding stepped hole of the lens barrel 41 to ensure that the first space ring 31 is coaxial, and the first space ring 31 needs to adjust the air distance between two adjacent groups of lenses to an optical design allowable range according to the corresponding thickness adjustment of different batches; the first lens 11 is assembled in the lens barrel 41 and abuts against the first spacer 31, and the outer side wall of the first lens 11 is matched with a corresponding stepped hole of the lens barrel 41 to ensure that the first lens 11 is coaxial; the first pressing ring 21 is screwed into the lens barrel 41 to fix the first lens 11 and the first spacer 31, and the outer side wall of the first pressing ring 21 is matched with a corresponding stepped hole of the lens barrel 41 to ensure that the first pressing ring 21 is screwed coaxially after being screwed.
The third lens gluing group 15 and the fourth lens gluing group 16 are assembled from the image surface side of the lens cone 41 in the following order, the third lens gluing group 15 is assembled into the lens cone 41, the outer side wall of the third lens gluing group 15 is matched with a stepped hole corresponding to the lens cone 41 to ensure the coaxiality of the third lens gluing group 15, the fourth pressing ring 24 is screwed in and fixes the third lens gluing group 15, and the outer side wall of the fourth pressing ring 24 is matched with the stepped hole corresponding to the lens cone 41 to ensure the coaxiality of the fourth pressing ring 24 after being screwed in; the fourth lens gluing group 16 is assembled in the lens barrel 41, the outer side wall of the fourth lens gluing group 16 is matched with a stepped hole corresponding to the lens barrel 41 to ensure that the fourth lens gluing group 16 is coaxial, the fifth pressing ring 25 is screwed and fixed on the fourth lens gluing group 16, and the outer side wall of the fifth pressing ring 25 is matched with the stepped hole corresponding to the lens barrel 41 to ensure that the fifth pressing ring 25 is screwed and then coaxial. It should be noted that, the outer side wall of the lens, the pressing ring or the space ring is matched with the stepped hole corresponding to the lens barrel 41, and the stepped hole corresponding to the lens barrel 41 can be completely attached to the outline of the outer side wall of the lens, the pressing ring or the space ring, and can also be partially matched to be more beneficial to ensuring the coaxiality and reducing the processing difficulty and the processing cost of the lens barrel 41, and is easier to assemble. The lens is assembled from two ends, the installation depth of each assembly element is moderate, the assembly difficulty is reduced, the operability is higher, and the lens is particularly suitable for the assembly of a long-tube type lens.
After the lens is completely debugged and tested, the first pressing ring 21 and the fifth pressing ring 25 are respectively fixed by dispensing through dispensing holes at the end parts, in the embodiment, two tweezers holes are arranged at the left end of the first pressing ring 21 and are used as dispensing holes, the tweezers holes are communicated with the glue storage groove on the first pressing ring 21, and the first pressing ring 21 and the lens barrel 41 are fixed by dispensing through the tweezers holes on the first pressing ring 21 to prevent looseness; the right end of the fifth pressing ring 25 is provided with two tweezers holes serving as glue dispensing holes, the tweezers holes are communicated with the glue storage grooves in the fifth pressing ring 25, glue is dispensed through the tweezers holes in the fifth pressing ring 25, and the fifth pressing ring 25 is fixed with the lens cone 41 to prevent looseness. And fix second clamping ring 22 through the point of first point gum hole 42 point on the lens cone 41 lateral wall, fix third clamping ring 23 through the point of second point gum hole 43 point gum hole on the lens cone 41 lateral wall, fix fourth clamping ring 24 through the point of third point gum hole 44 point gum hole on the lens cone 41 lateral wall point gum, assemble completely after gluing dry and finish, the debugging of being convenient for, need continue the difficult problem of repairing that the debugging caused after avoiding point gum to fix, promote the repairing debugging efficiency of lens.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express the more specific and detailed embodiments described in the present application, but not be understood as the limitation of the patent scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A lens fixing device comprising a lens barrel (41) and a pressing mechanism for fixing a plurality of groups of lenses in the lens barrel (41), characterized in that: the hold-down mechanism includes at least three clamping rings and at least one space ring, wherein:
the outer side wall of the space ring is matched with the inner side wall of the lens barrel (41), the space ring is positioned between two adjacent groups of lenses and used for limiting the distance between the two adjacent groups of lenses, and two ends of one space ring are respectively abutted against the lens barrel (41) and the first group of lenses close to the object plane side;
the pressing rings are positioned in the lens barrel (41) and connected with the lens barrel (41), one end of each pressing ring is a free end, and the other end of each pressing ring abuts against at least one group of lenses and is used for fixing the lenses in the lens barrel (41) respectively;
the middle part of the outer side wall of the pressing ring is also provided with a glue storage groove;
and the lens cone (41) or the pressing ring is also provided with glue dispensing holes which are respectively and correspondingly communicated with the glue storage grooves.
2. The lens holding device of claim 1, wherein: the glue dispensing holes corresponding to the glue storage grooves of the pressing rings at the two ends of the lens cone (41) are respectively formed in the end parts corresponding to the pressing rings, and the glue dispensing holes corresponding to the glue storage grooves of the other pressing rings are formed in the side wall of the lens cone (41).
3. The lens holding device of claim 1, wherein: the space rings are two or more, two ends of one space ring respectively abut against the lens cone (41) and the first group of lenses close to the object plane side, and two ends of the rest space rings respectively abut against two adjacent groups of lenses with the spacing smaller than the specified range.
4. The lens holding device of claim 1, wherein: the pressing ring is connected with the lens barrel (41) in a threaded manner.
5. The lens holding device of claim 1, wherein: the pressing ring and the spacing ring are coaxially arranged with the lens cone (41).
6. An optical lens, characterized in that: comprising the lens holding device according to any one of claims 1 to 5, further comprising a plurality of sets of lenses disposed in the lens barrel (41) and held by the pressing ring.
7. An optical lens as recited in claim 6, wherein: and the optical lens adopts a two-end assembling mode to assemble the plurality of groups of lenses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022325657.9U CN213338171U (en) | 2020-10-19 | 2020-10-19 | Lens fixing device and optical lens thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022325657.9U CN213338171U (en) | 2020-10-19 | 2020-10-19 | Lens fixing device and optical lens thereof |
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| CN213338171U true CN213338171U (en) | 2021-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022325657.9U Active CN213338171U (en) | 2020-10-19 | 2020-10-19 | Lens fixing device and optical lens thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115166928A (en) * | 2022-08-19 | 2022-10-11 | 厦门名晶光电科技有限公司 | Lens assembling method |
| CN116381890A (en) * | 2023-06-01 | 2023-07-04 | 江西联益光学有限公司 | Security lens and assembling and adjusting method thereof |
-
2020
- 2020-10-19 CN CN202022325657.9U patent/CN213338171U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115166928A (en) * | 2022-08-19 | 2022-10-11 | 厦门名晶光电科技有限公司 | Lens assembling method |
| CN115166928B (en) * | 2022-08-19 | 2024-01-23 | 厦门名晶光电科技有限公司 | Lens assembly method |
| CN116381890A (en) * | 2023-06-01 | 2023-07-04 | 江西联益光学有限公司 | Security lens and assembling and adjusting method thereof |
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