CN221149015U - Correcting component of continuous zooming optical lens - Google Patents
Correcting component of continuous zooming optical lens Download PDFInfo
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- CN221149015U CN221149015U CN202322928137.0U CN202322928137U CN221149015U CN 221149015 U CN221149015 U CN 221149015U CN 202322928137 U CN202322928137 U CN 202322928137U CN 221149015 U CN221149015 U CN 221149015U
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- 230000003287 optical effect Effects 0.000 title claims abstract description 62
- 238000009434 installation Methods 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 4
- 238000003754 machining Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Abstract
The application relates to the technical field of optical lenses, and discloses a correcting component of a continuous zooming optical lens, which solves the problem that the processing error of the lens affects the parameters of an optical path. The number of the correction sheets is at least one, and the thickness of the correction sheets is 0.1-0.4mm. When the lens has processing errors, the correction sheet is arranged between the lens base and the inner lens barrel, the thickness of the correction sheet is determined, and the deviation of the optical numerical value can be accurately corrected according to the formula of the light path design, so that the accuracy of the whole continuous zoom lens is improved, the operation is simple and quick, and the rejection rate is reduced.
Description
Technical Field
The application relates to the technical field of optical lenses, in particular to a correcting component of a continuous zoom optical lens.
Background
In a continuously variable optical lens, generally, the lens comprises a fixed lens group, a variable magnification lens group and a compensation lens group, referring to fig. 1, the variable magnification lens group and the compensation lens group are respectively matched with two guide pins 3 by two curved cam grooves 11 on the outer shell of a main lens barrel 1 to adjust the distance of the lens between the lens groups, so as to reach specified optical parameters and synthesize a required focal length value.
The zoom lens group and the compensation lens group both comprise lens bases and an inner lens barrel fixedly arranged in the lens bases, the two lens bases are respectively connected with the two guide nails 3, lenses are fixed in the inner lens barrel, and movable focusing of the lenses can be realized through sliding of the guide nails 3 in the cam grooves. Because the optical path design requirement of the continuous zoom optical lens is strict, the cam groove for limiting the movement of the guide pin 3 is also strictly arranged according to the data of the optical design; however, a small error cannot be avoided in the machining process of the optical lens, and a large deviation is generated in an actual optical path due to the accumulated tolerance of a plurality of lenses, so that the assembled optical lens cannot reach the standard of optical parameters, and a high rejection rate is caused.
Disclosure of utility model
In order to overcome the defect that the lens processing error has an influence on the optical path parameters, the application provides a correcting component of a continuous zoom optical lens.
The application provides a correcting component of a continuous zooming optical lens, which adopts the following technical scheme:
The utility model provides a correction component of continuous zoom optical lens, includes lens holder, interior lens cone and correction piece, annular mounting groove has been seted up to the terminal surface of lens holder, interior lens cone including the cooperation install in the installation department in the mounting groove, the width of mounting groove is greater than the width of installation department, the correction piece fills up locate the diapire of mounting groove with between the installation department.
Through adopting above-mentioned technical scheme, the mounting groove thickness design that will be used for installing interior lens cone is great, when the lens finished product of processing out checks out the light path gap in the equipment in-process, with the correction piece pad establish between lens stand and interior lens cone to the deviation of the optics numerical value that produces because of machining error is revised, the thickness of correction piece is the certainty, can carry out the correction according to the formula of light path design accurately and adjust, and then improves the accuracy of whole continuous zoom lens, and the correction operation is also simple swift, has reduced the rejection rate.
Optionally, the number of the modifying sheets is at least one, and the thickness of the modifying sheets is 0.1-0.4mm.
By adopting the technical scheme, the error of the common lens is smaller, so that the correction effect can be achieved when the thickness of the correction sheet is between 0.1 and 0.4mm, and the correction sheets can be respectively overlapped into different correction thicknesses, thereby improving the applicability and ensuring that the optical path error in a larger error range can be corrected.
Optionally, the material of the correction sheet is a hard metal material.
By adopting the technical scheme, the hard metal material is not easy to deform, so that the stability of optical parameters formed among a plurality of corrected lenses can be ensured, and the accuracy and stability of the continuous zoom lens are further improved.
Optionally, a limiting part is protruding to be provided with on the correction piece with the one side of mounting groove diapire butt, the mirror seat is seted up on the diapire of mounting groove and is supplied the spacing groove of spacing part cooperation grafting.
By adopting the technical scheme, the correction sheet is placed in the mounting groove, then the inner lens barrel is fixedly mounted on the lens base, and the mounting part is propped against the correction sheet; the situation that the correction piece rotates relative to the lens base and the inner lens barrel can be reduced through the cooperation of the limiting part and the limiting groove, so that the connection between the correction piece and the lens base is more stable and tight, and the stability of optical parameters of the continuous zoom lens is further ensured.
Optionally, a abdication groove for the cooperation grafting of the limiting part is formed in one surface of the correction piece, which is away from the bottom wall of the installation groove.
Through adopting above-mentioned technical scheme, when needs use a plurality of correction piece, can let the surface of two correction pieces closely laminate together through the groove of stepping down to guarantee the accuracy nature of thickness when a plurality of correction pieces stack, in order to guarantee can be accurate correction to optical parameter.
Optionally, the inside wall of mounting groove has seted up the internal thread, the surface of installation department has seted up with the external screw thread of internal screw thread cooperation joint soon.
By adopting the technical scheme, the lens base and the inner lens barrel are fixedly connected in a threaded connection mode, and the lens base and the inner lens barrel are convenient to assemble and disassemble, so that a correction sheet can be arranged between the lens base and the inner lens barrel; the correcting piece can also play a role of fastening and connecting the lens base and the inner lens cone while correcting.
Optionally, optical adhesive is adopted between the inner side wall of the mounting groove and the surface abutting surface of the mounting part.
Through adopting above-mentioned technical scheme, after mirror base and interior lens cone adopt the mode rigid coupling of screw thread spin to connect, adopt the optical cement to fix again, can reduce the mirror base and take place with the circumstances that interior lens cone becomes flexible even breaks away from, the distance of lens between the different lens group is kept steadily.
Optionally, the lens base is further screwed with a locking base in the mounting groove, and a gasket is arranged between the locking base and the inner lens barrel in a cushioning manner.
By adopting the technical scheme, after the inner lens cone is rotationally fixed on the lens base, a gasket is arranged on one surface of the inner lens cone, which faces away from the correction sheet, and finally the locking seat is tightly screwed on the lens base to tightly prop the inner lens cone, so that the stability of the connecting structure of the inner lens cone and the lens base can be improved, and the stability of the distance between lenses is ensured; moreover, the inner lens barrel is fastened by the locking seat, so that the inner lens barrel is convenient to detach, and the subsequent lens barrel is convenient to overhaul after faults occur.
In summary, the present application includes at least one of the following beneficial effects:
1. When the finished lens has processing errors, the correction sheet is arranged between the lens base and the inner lens barrel, the thickness of the correction sheet is determined, the deviation of the optical numerical value can be accurately corrected according to the formula of the optical path design, and the rejection rate is reduced;
2. Compared with the direct sliding adjustment of the relative positions of the lens base and the inner lens barrel, the adjustment by the correction piece is more accurate and quicker.
Drawings
FIG. 1 is a schematic view of a prior art optical lens main barrel;
FIG. 2 is a half-sectional view of a continuous-zoom optical lens having a correction member according to a first embodiment of the present application;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a cross-sectional view of a mounting structure associated with a correction patch in accordance with a second embodiment of the present application;
FIG. 5 is a half-sectional view of a continuous-zoom optical lens having a correction member in a third embodiment of the present application;
Fig. 6 is an enlarged view at B in fig. 5.
Reference numerals illustrate: 1. a main barrel; 11. cam grooves; 2. fixing the lens barrel; 3. a guide pin; 4. a lens base; 41. a mounting groove; 42. a limit groove; 43. a connecting groove; 5. an inner barrel; 51. a mounting part; 6. a correction sheet; 61. a limit part; 62. a relief groove; 7. a locking seat; 8. a gasket; 9. a lens.
Detailed Description
The application is described in further detail below with reference to fig. 2-6.
Embodiment one:
Referring to fig. 2, an embodiment of the application discloses a correcting member of a continuous zoom optical lens, which is installed in the optical lens and comprises a lens base 4, an inner lens barrel 5 and an annular correcting sheet 6, wherein an annular mounting groove 41 is formed in the end surface of the lens base 4, the inner lens barrel 5 comprises a mounting part 51 which is matched and installed in the mounting groove 41, the width of the mounting groove 41 is larger than that of the mounting part 51, and the correcting sheet 6 is arranged between the bottom wall of the mounting groove 41 and the mounting part 51 in a cushioning manner. When the thickness of the mounting groove 41 is designed to be larger and the finished lens 9 has processing errors, the correction sheet 6 is arranged between the lens base 4 and the inner lens barrel 5 in a cushioning mode, the thickness of the correction sheet 6 is determined, and deviation of correction optical values can be accurately corrected according to a formula of the optical path design, so that rejection rate is reduced.
Referring to fig. 2, the optical lens includes a fixed lens barrel 2 and a main lens barrel 1 rotatably sleeved on the fixed lens barrel 2, a curved cam groove 11 is formed in the main lens barrel 1, a through groove with the diameter consistent with that of the guide pin 3 is formed in the fixed lens barrel 2, the guide pin 3 is fixedly inserted on a lens base 4 after passing through the cam groove 11 and the through groove, the lens base 4 is slidably connected in the fixed lens barrel 2, and a lens 9 is fixedly mounted in an inner lens barrel 5. So that the different lens holders 4, i.e., the distances between the different lenses 9, can be adjusted to perform adjustment of the focal length while rotating the main barrel 1.
The appearance of the inner lens cone 5 is a stepped revolving body, the part with the largest outer diameter of the inner lens cone 5 is provided with a mounting part 51, the lens base 4 is also provided with a connecting groove 43 communicated with the mounting groove 41, the connecting groove 43 penetrates through the end face of the lens base 4, which is far away from the mounting groove 41, and the inner diameter of the connecting groove 43 is equal to the outer diameter of the part, which is connected with the mounting part 51, of the inner lens cone 5, so that the inner lens cone 5 and the lens base 4 are tightly connected together. The materials and processing manners of the inner lens barrel 5 and the lens base 4 can be adopted in the prior art, so that the description is omitted.
In an embodiment, the inner side wall of the mounting groove 41 is provided with an internal thread, the outer surface of the mounting part 51 is provided with an external thread which is screwed with the internal thread in a matching way, the lens base 4 and the inner lens barrel 5 are fixedly connected in a screwed way, and the disassembly and the assembly of the lens base 4 and the inner lens barrel 5 are also convenient, so that the correction sheet 6 can be placed between the lens base 4 and the inner lens barrel 5; the correction piece 6 can also play a role of fastening and connecting the lens base 4 and the inner lens barrel 5 while correcting.
In one embodiment, optical adhesive is used between the inner side wall of the mounting groove 41 and the surface abutment surface of the mounting portion 51. After the lens base 4 is inserted into the inner lens barrel 5, the optical adhesive is directly adopted, and the operation is more convenient.
In this embodiment, referring to fig. 3, it is preferable to combine the threaded connection and the optical adhesive, first, the correction piece 6 and the lens base 4 are abutted together, then the inner lens barrel 5 is fixedly mounted on the lens base 4, the mounting portion 51 is abutted against the correction piece 6, and after the lens base 4 and the inner lens barrel 5 are fixedly connected by adopting the threaded connection, the optical adhesive is adopted for fixing, so that the occurrence of loosening or even detachment of the lens base 4 and the inner lens barrel 5 can be reduced, and the distance between the lenses 9 of different lens groups can be stably maintained.
Referring to fig. 3, the material of the correction sheet 6 may be plastic or metal, preferably a hard metal material, which is not easily deformed, so that it is ensured that the optical parameters formed between the corrected lenses 9 remain stable, and the accuracy and stability of the continuous zoom lens are further improved. The outer diameter of the correction piece 6 is consistent with the inner diameter of the mounting groove 41, and the inner diameter of the correction piece 6 is consistent with the inner diameter of the connecting groove 43, so that the correction piece 6 can be sleeved on the inner lens barrel 5 and then mounted in the mounting groove 41 of the lens base 4 together with the inner lens barrel 5. The number of the correction sheets 6 is at least one, and the thickness of the correction sheets 6 is 0.1-0.4mm; since the error of the lens 9 is generally smaller, the thickness of the correction sheet 6 in this embodiment is preferably 0.2mm and 0.3mm, so that the correction effect can be achieved, and the correction sheets 6 can be respectively overlapped to different correction thicknesses, thereby improving the applicability and ensuring that the optical path error within a larger error range can be corrected.
The implementation principle of the correction component of the continuous zoom optical lens provided by the embodiment of the application is as follows:
The thickness of the mounting groove 41 for mounting the inner barrel 5 is designed to be large, and when the finished lens 9 is inspected to have a light path gap in the assembly process, the correction sheet 6 is arranged between the lens holder 4 and the inner barrel 5 in a padded manner to correct deviation of optical values due to machining errors, thereby improving the accuracy of the entire continuous zoom lens. Specifically, if a positive tolerance is generated between the lenses 9, the thickness or number of the correction sheets 6 needs to be increased to adjust the distance between the lenses 9 to meet the requirement of the optical path design; if negative tolerances are created between the lenses 9, the thickness or number of the correction sheets 6 needs to be reduced to bring the distance between the lenses 9 closer to the design requirement of the optical path.
Embodiment two:
Referring to fig. 2, an embodiment of the present application discloses a correcting member for a continuous zoom optical lens, which is further improved based on the first embodiment, in order to ensure stability of a correcting structure, a surface of a correcting plate 6 abutting against a bottom wall of a mounting groove 41 is convexly provided with a limiting portion 61, the limiting portion 61 is a semicircular protrusion, two limiting portions 61 are symmetrically arranged with a diameter of the correcting plate 6 as a symmetry axis, a bottom wall of a mounting groove 41 of a lens seat 4 is provided with a limiting groove 42 for matching and inserting the limiting portion 61, and when the limiting portion 61 is inserted into the limiting groove 42, a surface of the correcting plate 6 is attached to the bottom wall of the mounting groove 41. The situation that the correction piece 6 rotates relative to the lens base 4 and the inner lens barrel 5 can be reduced through the cooperation of the limiting part 61 and the limiting groove 42, so that the connection between the correction piece 6 and the lens base 4 and the connection between the correction piece 6 and the inner lens barrel 5 are more stable and tight, and the stability of optical parameters of the continuous zoom lens is further ensured.
Further, because there are cases where a plurality of correction sheets 6 need to be used, a yielding groove 62 for the limit portion 61 to be matched and inserted is further formed in one surface of the correction sheet 6 away from the bottom wall of the mounting groove 41, and the surfaces of the two correction sheets 6 can be tightly attached together through the yielding groove 62, so that the accuracy of the thickness of the plurality of correction sheets 6 when being overlapped is ensured, and the accurate correction of the optical parameters is ensured.
Embodiment III:
Referring to fig. 2, an embodiment of the present application discloses a correcting member for a continuous-zoom optical lens, which is different from the first embodiment or the second embodiment in that after the inner barrel 5 and the lens base 4 are fixed by screwing, no optical cement is used for further fixing. Specifically, the correcting member of the continuous zoom optical lens further comprises a locking seat 7 and a gasket 8, the gasket 8 can be made of rubber, flexible graphite or paper, and other materials, the outer diameter of the locking seat 7 is consistent with the outer diameter of the mounting part 51, the side wall of the locking seat 7 is provided with threads, after the inner lens cone 5 is screwed on the lens seat 4, the gasket 8 is arranged on one surface of the inner lens cone 5 facing away from the correcting sheet 6, and finally the locking seat 7 is screwed in the mounting groove 41 and the inner lens cone 5 is abutted tightly, so that the stability of the connecting structure of the inner lens cone 5 and the lens seat 4 can be improved, and the stability of the distance between lenses 9 is ensured; the inner lens barrel 5 is fastened by the locking seat 7, so that the inner lens barrel is convenient to disassemble, and the subsequent lens barrel is convenient to overhaul after faults occur. It should be noted that, the middle parts of the locking seat 7 and the gasket 8 are provided with through holes with inner diameters larger than the diameter of the lens 9, so that the light path of the lens 9 is not blocked.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (8)
1. A correction member for a continuous-zoom optical lens, characterized by: including mirror mount (4), interior lens cone (5) and annular correction piece (6), annular mounting groove (41) have been seted up to the terminal surface of mirror mount (4), interior lens cone (5) including the cooperation install in installation department (51) in mounting groove (41), the width of mounting groove (41) is greater than the width of installation department (51), correction piece (6) pad are located the diapire of mounting groove (41) with between installation department (51).
2. The correction member for a continuous-zoom optical lens according to claim 1, wherein: the number of the correction sheets (6) is at least one, and the thickness of the correction sheets (6) is 0.1-0.4mm.
3. The correction member for a continuous-zoom optical lens according to claim 1, wherein: the material of the correction sheet (6) is a hard metal material.
4. The correction member for a continuous-zoom optical lens according to claim 1, wherein: one surface of the correction sheet (6) which is abutted to the bottom wall of the mounting groove (41) is convexly provided with a limiting part (61), and the bottom wall of the mounting groove (41) of the lens seat (4) is provided with a limiting groove (42) for the matching and inserting of the limiting part (61).
5. The correction member for a continuous-zoom optical lens according to claim 4, wherein: one surface of the correction sheet (6) deviating from the bottom wall of the mounting groove (41) is provided with a yielding groove (62) for the matching and inserting of the limiting part (61).
6. The correction member for a continuous-zoom optical lens according to claim 1, wherein: the inner side wall of the mounting groove (41) is provided with an inner thread, and the outer surface of the mounting part (51) is provided with an outer thread which is screwed with the inner thread in a matching way.
7. The correction member for a continuous-zoom optical lens according to claim 1 or 6, characterized in that: an optical adhesive is adopted between the inner side wall of the mounting groove (41) and the surface abutting surface of the mounting part (51).
8. The correction member for a continuous-zoom optical lens according to claim 6, wherein: the lens base (4) is also rotationally connected with a locking base (7) in the mounting groove (41), and a gasket (8) is arranged between the locking base (7) and the inner lens cone (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322928137.0U CN221149015U (en) | 2023-10-31 | 2023-10-31 | Correcting component of continuous zooming optical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322928137.0U CN221149015U (en) | 2023-10-31 | 2023-10-31 | Correcting component of continuous zooming optical lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221149015U true CN221149015U (en) | 2024-06-14 |
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ID=91425866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322928137.0U Active CN221149015U (en) | 2023-10-31 | 2023-10-31 | Correcting component of continuous zooming optical lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221149015U (en) |
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2023
- 2023-10-31 CN CN202322928137.0U patent/CN221149015U/en active Active
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