CN212060710U - Lens barrel focusing device - Google Patents
Lens barrel focusing device Download PDFInfo
- Publication number
- CN212060710U CN212060710U CN202020369832.1U CN202020369832U CN212060710U CN 212060710 U CN212060710 U CN 212060710U CN 202020369832 U CN202020369832 U CN 202020369832U CN 212060710 U CN212060710 U CN 212060710U
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- CN
- China
- Prior art keywords
- lens
- sleeve
- lens cone
- base
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a lens cone focusing device, it includes microscope base (1), is connected with lens cone (2) in microscope base (1) one end, still overlaps to be equipped with sleeve (3) on microscope base (1), the one end of sleeve (3) be equipped with and correspond complex through-hole (3 a) with lens cone (2). The utility model discloses simple structure, focusing are convenient, and the focal length is adjusted and can not take place the position change after the back focusing that targets in place, can effectual assurance imaging quality.
Description
The technical field is as follows:
the utility model belongs to the technical field of the optics technique and specifically relates to a lens cone focusing device.
Background art:
at present, a plurality of lens cone focusing devices are provided, for example, in a lens module (patent publication No. CN 101930108A) of the invention patent of li jianwei et al, although the structure is simple, after the focal length of the lens cone is adjusted, the position of the lens cone cannot be fixed by the thread fit between the lens cone and the lens base, so that the position of the lens cone may be changed during the use process, thereby resulting in an unclear image. Li Xinhe invention patent of 'lens cone screwing device and method' (patent publication No. CN 101201443A) provides a lens cone screwing device, but the position of the lens cone can not be fixed in the using process, and the requirement of accurate positioning of the lens cone in the instrument industry can not be met.
The utility model has the following contents:
the utility model provides a lens cone focusing device to overcome the defects in the prior art.
The application provides the following technical scheme:
a lens barrel focusing device, it includes the microscope base, its characterized in that: one end of the lens base is connected with lens cones which are coaxially distributed, and one end of the lens base, which is sleeved with a sleeve, is provided with a through hole which is correspondingly matched with the lens cones.
On the basis of the technical scheme, the following further technical scheme can be provided:
the lens cone comprises a thick cylinder part with one end connected and matched with the lens base, and a thin cylinder part coaxially extending out of the other end of the thick cylinder part and correspondingly matched with the through hole, wherein the thick cylinder part and the thin cylinder part are of an integrated structure and are distributed in a step shape.
The other end of the lens base is provided with an annular flange which is coaxially distributed.
Utility model advantage:
the utility model discloses simple structure, lens cone and microscope base close the focus soon through the screw thread, and the screw thread of recycling sleeve and microscope base closes the fastening lens cone soon, can guarantee that the lens cone can not take place the position change after focusing, guarantees the imaging quality, and lantern ring simple structure, processing is convenient, uses reliably, and lens cone focusing device's axiality is high.
Description of the drawings:
FIG. 1 is a schematic view of the combined structure of the present invention;
fig. 2 is a schematic diagram of the structure of the present invention when not combined.
The specific implementation mode is as follows:
as shown in fig. 1 and 2, a lens barrel focusing apparatus includes a cylindrical lens base 1, an inner cylindrical wall at one end of the lens base 1 is provided with a section of internal thread a, and an outer cylindrical wall of the lens base 1 is provided with a section of external thread b. And an annular flange 1a which is coaxially distributed extends outwards along the radial direction from the end part of the other end of the lens base 1.
The lens barrel 2 is arranged, the lens barrel 2 comprises a thick barrel part 2a, and a thread section correspondingly matched with the internal thread a is arranged on the outer wall of one end of the thick barrel part 2 a. A thin cylinder part 2b is coaxially extended from the other end of the thick cylinder part 2a to be fitted into the through hole 3 a. The diameter of the thick cylindrical part 2a is larger than that of the thin cylindrical part 2 b. The thick cylinder part and the thin cylinder part are of an integrated structure and are distributed in a step shape.
A round sleeve 3 with one end open and the other end sealed is arranged, and the inner wall of the open end of the sleeve 3 is provided with a connecting thread correspondingly matched with the external thread b. The end face of the sealed end of the sleeve 3 is provided with through holes 3a which are coaxially distributed, and the diameter of the through holes 3a corresponds to the diameter of the thin cylinder part 2b, so that the thin cylinder part 2b can be inserted into the through holes 3 a.
The using method comprises the following steps:
the focal length is adjusted by controlling the depth of the thick cylinder part 2a of the lens cone 2 screwed into the internal thread a of the lens base 1, after the focal length is adjusted in place, the thin cylinder part 2b is inserted into the through hole 3a of the sleeve 3, and then the connecting thread at one end of the sleeve 3 is screwed with the external thread b until the end surface of the sealing end of the sleeve 3 is abutted against the end surface at the other end of the thick cylinder part 2 a. The stability of the connection state of the lens barrel 2 and the lens holder 1 is further ensured by the sleeve 3.
Claims (3)
1. A lens barrel focusing device, it includes microscope base (1), its characterized in that: one end of the lens base (1) is connected with a lens cone (2) which is coaxially distributed, the lens base (1) is further sleeved with a sleeve (3), and one end of the sleeve (3) is provided with a through hole (3 a) which is correspondingly matched with the lens cone (2).
2. A lens barrel focusing apparatus according to claim 1, wherein: the lens barrel (2) comprises a thick barrel part (2 a) with one end connected and matched with the lens base (1), a thin barrel part (2 b) which is correspondingly matched with the through hole (3 a) coaxially extends out of the other end of the thick barrel part (2 a), and the thick barrel part (2 a) and the thin barrel part (2 b) are of an integrated structure.
3. A lens barrel focusing apparatus according to claim 1, wherein: the other end of the lens base (1) is provided with an annular flange (1 a) which is coaxially distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020369832.1U CN212060710U (en) | 2020-03-23 | 2020-03-23 | Lens barrel focusing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020369832.1U CN212060710U (en) | 2020-03-23 | 2020-03-23 | Lens barrel focusing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212060710U true CN212060710U (en) | 2020-12-01 |
Family
ID=73529697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020369832.1U Expired - Fee Related CN212060710U (en) | 2020-03-23 | 2020-03-23 | Lens barrel focusing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212060710U (en) |
-
2020
- 2020-03-23 CN CN202020369832.1U patent/CN212060710U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201201 Termination date: 20210323 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |