CN203799095U - Lens with coaxiality of front lens group and rear lens group adjustable - Google Patents
Lens with coaxiality of front lens group and rear lens group adjustable Download PDFInfo
- Publication number
- CN203799095U CN203799095U CN201420213893.3U CN201420213893U CN203799095U CN 203799095 U CN203799095 U CN 203799095U CN 201420213893 U CN201420213893 U CN 201420213893U CN 203799095 U CN203799095 U CN 203799095U
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- China
- Prior art keywords
- main
- outer peripheral
- lens barrel
- endoporus
- main cylinder
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Abstract
The utility model discloses a lens with coaxiality of the front lens group and the rear lens group adjustable, which comprises a front lens group, a rear lens group and a first main cylinder. The front lens group comprises a front lens barrel and a lens; the rear lens group comprises a rear lens barrel and a lens; the front lens barrel is fixedly connected at the front part of the inner hole of the first main cylinder; the rear lens barrel sleeves the rear part of the inner hole of the first main cylinder; the middle of the inner hole of the first main cylinder is provided with a shoulder to be matched with the end surface of the front part of the rear lens barrel; three radial holes with the same diameters are arranged at an interval of 120 DEG on the outer peripheral surface of the rear part of the first main cylinder; three grooves are processed on the outer peripheral surface of the first main cylinder near the three radial holes; the three radial holes are provided with steel balls with the same diameters; one end of each of the three elastic sheets is respectively pressed on each of the three steel balls, and the other end is located in the bottom surface of each of the three grooves respectively by a screw; an annular groove, corresponding to the three first radial holes, is arranged on the outer peripheral surface of the rear lens barrel; and the front side surface of the annular groove is a conical surface matched with the three steel balls at the same time. Coaxial precision of the front lens group and the rear lens group can be improved, and the imaging quality of the lens is improved.
Description
Technical field
The utility model relates to pick-up lens manufacturing technology field, especially a kind of front lens group and the adjustable camera lens of rear mirror group right alignment.
Background technology
In the manufacture process of existing pick-up lens, for the camera lens with front lens group and rear mirror group, front lens group and rear mirror group are contained on same main cylinder conventionally, foozle and rigging error due to parts, the coaxial precision of front lens group and rear mirror group is difficult to further improve, restive in 0.005mm by its coaxial precision of existing technological level, so the image quality of camera lens is just difficult to further improve.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of front lens group and the adjustable camera lens of rear mirror group right alignment, can improve the coaxial precision of front lens group and rear mirror group, further improves the image quality of camera lens.
For achieving the above object, the technical solution of the utility model is: a kind of front lens group and the adjustable camera lens of rear mirror group right alignment, comprise front lens group, rear mirror group, the first main cylinder, front lens group comprises front lens barrel and is contained in the eyeglass in front lens barrel, rear mirror group comprises rear lens barrel and is contained in the eyeglass in rear lens barrel, front lens barrel is fixed in the front portion of first main endoporus, and rear lens barrel is enclosed within the rear portion of first main endoporus, and the middle part of first main endoporus is provided with a shoulder and matches with the front end face of rear lens barrel;
First main rear portion outer peripheral face, 120 degree of being separated by offer three the first radial holes that diameter is identical, first main outer peripheral face of three the first radial hole peripheries is processed with three grooves, on three the first radial holes, the steel ball that diameter is identical is all housed, one end of three shell fragments is pressed in respectively on three steel balls, the other end uses respectively screw lock in the bottom surface of three grooves, rear lens barrel outer peripheral face is provided with corresponding three the first radial holes of a ring groove, and the leading flank of ring groove is that the conical surface matches with three steel balls simultaneously.
Further improve, outer peripheral face both sides, described first main rear portion are also provided with two the second radial holes, load onto two trip bolts the first main cylinder is fixed together with rear lens barrel or injects fixing glue by two the second radial holes the first main cylinder is fixed together with rear lens barrel by two the second radial holes.Like this when front lens group and after mirror group right alignment adjust to after optimum condition, by trip bolt or fixing glue, can prevent the first main cylinder and the mutual positioning of rear lens barrel.
Preferably the front portion of described first main endoporus is provided with internal thread, and the outer peripheral face of front lens barrel is provided with external thread, together with the anterior interlocking of the outer peripheral face of front lens barrel and first main endoporus.To facilitate the assembling of front lens barrel and the first main cylinder.
The preferred structure of three described grooves, measure-alike, the structure of three described shell fragments, measure-alike.
Further improve, the middle part of described first main outer peripheral face is enclosed within the postmedian of second main endoporus, the postmedian of second main endoporus is provided with at least one axially directed groove, first main outer peripheral face is fixed with guider screw and matches with second main axially directed groove of endoporus, the front portion of second main endoporus is provided with internal thread, the front portion of first main outer peripheral face is provided with external thread, inside and outside one, establishing threaded facing matches with the external thread of second main endoporus front internal thread and first main outer peripheral face front portion simultaneously, the front end of facing stretches out second main endoporus and is connected mutually with first regulating ring.By rotating the first regulating ring, can make the first main cylinder do axially and move around with respect to the second main cylinder like this, reach the effect of adjusting focal length.
Further improve again, adjustable diaphragm is equipped with at described first main endoporus middle part, adjustable diaphragm is provided with one along the axially extended release handle of the first main cylinder, release handle is provided with strip hole, second main periphery surface cover has the second regulating ring, the first main cylinder and the second corresponding the second regulating ring place of main cylinder all have radial strut hole, and one adjusts screw is fixed on the second regulating ring, adjust one end of screw and match with the strip hole on described release handle through the radial strut hole of the first main cylinder and the second main cylinder.Rotate like this aperture of the second regulating ring capable of regulating adjustable diaphragm, to reach the object of adjusting aperture.Further again, described the second regulating ring also can be fixed a stop screw, and stop screw one end is through the radial strut hole of the first main cylinder and the second main cylinder.By stop screw, can limit the rotational angle of the second regulating ring, to protect adjustable diaphragm.
Further improve, described second main outer peripheral face rear portion is connected mutually with an installation sleeve again, and the outer peripheral face of installation sleeve is provided with the external thread that use is installed.Facilitate camera lens to be assemblied on video camera.
The front end of preferred described facing and the first regulating ring are fixed together by a plurality of screws.
Further improve, the front portion of described second main endoporus is provided with multiple tracks internal thread again, and facing outside surface is provided with multiple tracks external thread and matches with the anterior multiple tracks internal thread of second main endoporus simultaneously.Can reduce the quantity of threaded engagement face, to reduce the rotational resistance of the first regulating ring, the more convenient Focussing that carries out.
The utility model is because front lens barrel is fixed in the front portion of first main endoporus, and rear lens barrel is enclosed within the rear portion of first main endoporus, and the middle part of first main endoporus is provided with a shoulder and matches with the front end face of rear lens barrel; Then at first main rear portion outer peripheral face, 120 degree of being separated by, offer three the first radial holes that diameter is identical, first main outer peripheral face of three the first radial hole peripheries is processed with three grooves, on three the first radial holes, the steel ball that diameter is identical is all housed, one end of three shell fragments is pressed in respectively on three steel balls, the other end uses respectively screw lock in the bottom surface of three grooves, rear lens barrel outer peripheral face is provided with corresponding three the first radial holes of a ring groove, and the leading flank of ring groove is that the conical surface matches with three steel balls simultaneously.Such three steel balls apply an extruding force just to the leading flank of rear lens barrel ring groove simultaneously, this extruding force can resolve into radial force and axial force, axial force can guarantee that rear lens barrel front end face matches with the shoulder at first main endoporus middle part, radial force can make rear lens barrel radially move, the axial location of lens barrel after changing, after camera lens assembling, adopt the image quality of projection tool detector lens, because the front portion of front lens barrel and first main endoporus forms fixing, after rotating, lens barrel just can change the image quality of camera lens, because three steel balls apply the effect of extruding force, after rotating, lens barrel can find an optimum position to obtain best image quality.Therefore the utility model can improve the coaxial precision of front lens group and rear mirror group, further improves the image quality of camera lens.
In actual detection, the coaxial precision of the utility model front lens group and rear mirror group can be increased in 0.005mm.
On the other hand, after rotating, lens barrel finds behind optimum position, can the first main cylinder is fixed together with rear lens barrel by trip bolt or fixing glue, prevents that positioning from reducing again the image quality of camera lens.
Accompanying drawing explanation
Fig. 1 is the utility model front view;
Fig. 2 is the A-A cut-open view of Fig. 1;
Fig. 3 is the B-B cut-open view of Fig. 1;
Fig. 4 is the C-C cut-open view of Fig. 2;
Fig. 5 is first main stereographic map of the utility model;
Fig. 6 is first main front view of the utility model;
Fig. 7 is the D-D cut-open view of Fig. 6;
Fig. 8 is the E-E cut-open view of Fig. 6;
Fig. 9 is lens barrel front view after the utility model;
Figure 10 is the F-F cut-open view of Fig. 9;
Figure 11 is second main stereographic map of the utility model;
Figure 12 is the utility model facing stereographic map;
Figure 13 is that the utility model is hidden the stereographic map after front lens group, the second main cylinder, facing, the first adjustment ring, installation sleeve;
Figure 14 is the front perspective view of Figure 13.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment, the utility model is described in further detail.
Shown in Fig. 1 to Figure 14, a kind of front lens group and the adjustable camera lens of rear mirror group right alignment, comprise the main cylinder 3 of front lens group 1, rear mirror group 2, first, front lens group 1 comprises front lens barrel 11 and is contained in the eyeglass 12 in front lens barrel 11, and rear mirror group 2 comprises rear lens barrel 21 and is contained in the eyeglass 22 in rear lens barrel 21.
Front lens barrel 11 is fixed in the front portion of the first main cylinder 3 endoporus, and concrete affixed mode is, the front portion of the first main cylinder 3 endoporus is provided with internal thread 3a, and the outer peripheral face of front lens barrel 11 is provided with external thread, together with the anterior interlocking of the outer peripheral face of front lens barrel 11 and first main 3 endoporus.
Rear lens barrel 21 is enclosed within the rear portion of the first main cylinder 3 endoporus, and the middle part of the first main cylinder 3 endoporus is provided with a shoulder 3b and matches with the front end face 211 of rear lens barrel 21.
The first main cylinder 3 rear portion outer peripheral faces 120 degree of being separated by offer three the first radial holes 31 that diameter is identical, the first main cylinder 3 outer peripheral faces of three the first radial hole 31 peripheries are processed with three grooves 311, on three the first radial holes 31, the steel ball 312 that diameter is identical is all housed, one end of three shell fragments 313 is pressed in respectively on three steel balls 312, the other end is locked in respectively the bottom surface of three grooves 311 with screw 314, rear lens barrel 21 outer peripheral faces are provided with corresponding three the first radial holes 31 of a ring groove 212, and the leading flank 21a of ring groove 212 is that the conical surface matches with three steel balls 312 simultaneously.
The preferred structure of three described grooves 311, measure-alike, the structure of three described shell fragments 313, measure-alike.
Described the first main cylinder 3 outer peripheral face both sides, rear portion are also provided with two the second radial holes 32, when front lens group 1 and after after the right alignment of mirror group 2 adjusts, can load onto two trip bolts 321 by two the second radial holes 32 the first main cylinder 3 is fixed together with rear lens barrel 21; Or by two the second radial holes 32 injection fixing glue, the first main cylinder 3 is fixed together with rear lens barrel 21.
The middle part of described the first main cylinder 3 outer peripheral faces is enclosed within the postmedian of second main cylinder 4 endoporus, the postmedian of the second main cylinder 4 endoporus is provided with two axially directed grooves 41, the first main cylinder 3 outer peripheral face both sides are fixed with two guider screws 33 and match with two axially directed grooves 41 of the second main cylinder 4 endoporus respectively, the front portion of the second main cylinder 4 endoporus is provided with twice internal thread 42, the front portion of the first main cylinder 3 outer peripheral faces is provided with external thread 3c, inside and outside one, establish threaded facing 5 matches with the external thread 3c of the second main cylinder 4 endoporus main cylinder of anterior twice internal thread 42 and first 3 outer peripheral face front portions simultaneously, the front end of facing 5 stretches out the second main cylinder 4 endoporus and is connected mutually with first regulating ring 6, the front end of described facing 5 and the first regulating ring 6 can be fixed together by a plurality of screws.Rotation the first regulating ring 6 just can make the first main cylinder 3 axially move with respect to the second main cylinder 4 like this, just can adjust the focal length of camera lens.
The inner peripheral surface of facing 5 is provided with internal thread 51 and matches with the external thread 3c of the first main cylinder 3 outer peripheral face front portions, the outer peripheral face of facing 5 is provided with twice external thread 52 and matches with the anterior twice internal thread 42 of the second main cylinder 4 endoporus, can reduce the quantity of threaded engagement face like this, to reduce the rotational resistance of the first regulating ring 6, more convenient adjustment lens focus.
At described the first main cylinder 3 endoporus middle parts, adjustable diaphragm 7 is housed, adjustable diaphragm 7 is provided with one along the first main cylinder 3 axially extended release handles 71, release handle 71 is provided with strip hole 711, the second main cylinder 4 periphery surface covers have the second regulating ring 8, the first main cylinder of main cylinder 3 and second 4 corresponding the second regulating ring 8 places all have radial strut hole 34,43, one adjusts screw 81 is fixed on the second regulating ring 8, adjusts one end of screw 81 and matches with the strip hole 711 on described release handle 71 through the radial strut hole 34,43 of the main cylinder 4 of the first main cylinder 3 and second.Rotate the second regulating ring 8 and just can drive adjustment screw 81, by adjusting screw 81, drive release handles 71 to rotate, can regulate the aperture of adjustable diaphragm 7, reach the object that regulates aperture size.
On described the second regulating ring 8, also can fix a stop screw 82, stop screw 82 one end are through the radial strut hole 34,43 of the main cylinder 4 of the first main cylinder 3 and second.Can limit the rotational angle of the second regulating ring 8 like this, reach the object of protection adjustable diaphragm 7.
Described the second main cylinder 4 outer peripheral face rear portions are connected mutually with an installation sleeve 9, and the outer peripheral face of installation sleeve 9 is provided with the external thread 91 that use is installed.Installation sleeve 9 can be connected by trip bolt 92 mutually with the second main cylinder 4 outer peripheral face rear portions, by installation sleeve 9, can conveniently camera lens be contained in to video camera.
After the assembling of this camera lens, adopt the image quality of projection tool detector lens, because the front portion of front lens barrel 11 and the first main cylinder 3 endoporus forms fixing, after rotating, lens barrel 21 just can change the image quality of camera lens, due to the effect that three steel balls 311 apply extruding force to the leading flank 21a of rear lens barrel 21 ring grooves 212, after rotating, lens barrel 21 can find an optimum position to obtain best image quality.After rotating, lens barrel 21 finds behind optimum position, and the right alignment of front lens group 1 and rear mirror group 2, after optimum condition, is now loaded onto two trip bolts 321 by two the second radial holes 32 again the first main cylinder 3 is fixed together with rear lens barrel 21; Or by two the second radial holes 32 injection fixing glue, the first main cylinder 3 is fixed together with rear lens barrel 21.
Below be only preferred embodiment of the utility model, the change that those skilled in the art does to be equal to by claim all falls into the protection domain of this case.
Claims (10)
1. a front lens group and the adjustable camera lens of rear mirror group right alignment, comprise front lens group, rear mirror group, the first main cylinder, front lens group comprises front lens barrel and is contained in the eyeglass in front lens barrel, rear mirror group comprises rear lens barrel and is contained in the eyeglass in rear lens barrel, it is characterized in that: front lens barrel is fixed in the front portion of first main endoporus, rear lens barrel is enclosed within the rear portion of first main endoporus, and the middle part of first main endoporus is provided with a shoulder and matches with the front end face of rear lens barrel;
First main rear portion outer peripheral face, 120 degree of being separated by offer three the first radial holes that diameter is identical, first main outer peripheral face of three the first radial hole peripheries is processed with three grooves, on three the first radial holes, the steel ball that diameter is identical is all housed, one end of three shell fragments is pressed in respectively on three steel balls, the other end uses respectively screw lock in the bottom surface of three grooves, rear lens barrel outer peripheral face is provided with corresponding three the first radial holes of a ring groove, and the leading flank of ring groove is that the conical surface matches with three steel balls simultaneously.
2. a kind of front lens group according to claim 1 and the adjustable camera lens of rear mirror group right alignment, it is characterized in that: outer peripheral face both sides, described first main rear portion are also provided with two the second radial holes, by two the second radial holes, load onto two trip bolts and the first main cylinder is fixed together with rear lens barrel or injects fixing glue by two the second radial holes the first main cylinder is fixed together with rear lens barrel.
3. a kind of front lens group according to claim 1 and the adjustable camera lens of rear mirror group right alignment, it is characterized in that: the front portion of described first main endoporus is provided with internal thread, the outer peripheral face of front lens barrel is provided with external thread, together with the anterior interlocking of the outer peripheral face of front lens barrel and first main endoporus.
4. a kind of front lens group according to claim 1 and the adjustable camera lens of rear mirror group right alignment, is characterized in that: the structure of three described grooves, measure-alike, the structure of three described shell fragments, measure-alike.
5. according to a kind of front lens group described in claim 1 to 4 any one and the adjustable camera lens of rear mirror group right alignment, it is characterized in that: the middle part of described first main outer peripheral face is enclosed within the postmedian of second main endoporus, the postmedian of second main endoporus is provided with at least one axially directed groove, first main outer peripheral face is fixed with guider screw and matches with second main axially directed groove of endoporus, the front portion of second main endoporus is provided with internal thread, the front portion of first main outer peripheral face is provided with external thread, inside and outside one, establishing threaded facing matches with the external thread of second main endoporus front internal thread and first main outer peripheral face front portion simultaneously, the front end of facing stretches out second main endoporus and is connected mutually with first regulating ring.
6. a kind of front lens group according to claim 5 and the adjustable camera lens of rear mirror group right alignment, it is characterized in that: adjustable diaphragm is equipped with at described first main endoporus middle part, adjustable diaphragm is provided with one along the axially extended release handle of the first main cylinder, release handle is provided with strip hole, second main periphery surface cover has the second regulating ring, the first main cylinder and the second corresponding the second regulating ring place of main cylinder all have radial strut hole, one adjusts screw is fixed on the second regulating ring, adjusting one end of screw matches with the strip hole on described release handle through the radial strut hole of the first main cylinder and the second main cylinder.
7. a kind of front lens group according to claim 6 and the adjustable camera lens of rear mirror group right alignment, is characterized in that: described the second regulating ring is also fixed a stop screw, and stop screw one end is through the radial strut hole of the first main cylinder and the second main cylinder.
8. a kind of front lens group according to claim 5 and the adjustable camera lens of rear mirror group right alignment, is characterized in that: described second main outer peripheral face rear portion is connected mutually with an installation sleeve, and the outer peripheral face of installation sleeve is provided with the external thread that use is installed.
9. a kind of front lens group according to claim 5 and the adjustable camera lens of rear mirror group right alignment, is characterized in that: the front end of described facing and the first regulating ring are fixed together by a plurality of screws.
10. a kind of front lens group according to claim 5 and the adjustable camera lens of rear mirror group right alignment, it is characterized in that: the front portion of described second main endoporus is provided with multiple tracks internal thread, facing outside surface is provided with multiple tracks external thread and matches with the anterior multiple tracks internal thread of second main endoporus simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213893.3U CN203799095U (en) | 2014-04-29 | 2014-04-29 | Lens with coaxiality of front lens group and rear lens group adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213893.3U CN203799095U (en) | 2014-04-29 | 2014-04-29 | Lens with coaxiality of front lens group and rear lens group adjustable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203799095U true CN203799095U (en) | 2014-08-27 |
Family
ID=51381298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420213893.3U Expired - Fee Related CN203799095U (en) | 2014-04-29 | 2014-04-29 | Lens with coaxiality of front lens group and rear lens group adjustable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203799095U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103901579A (en) * | 2014-04-29 | 2014-07-02 | 厦门力鼎光电技术有限公司 | Lens adjustable in coaxiality of front lens group and rear lens group |
| CN105739048A (en) * | 2014-12-12 | 2016-07-06 | 信泰光学(深圳)有限公司 | Coaxial focusing lens group adjusting mechanism |
-
2014
- 2014-04-29 CN CN201420213893.3U patent/CN203799095U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103901579A (en) * | 2014-04-29 | 2014-07-02 | 厦门力鼎光电技术有限公司 | Lens adjustable in coaxiality of front lens group and rear lens group |
| CN103901579B (en) * | 2014-04-29 | 2016-04-20 | 厦门力鼎光电技术有限公司 | A kind of front lens group and the adjustable camera lens of rear mirror group right alignment |
| CN105739048A (en) * | 2014-12-12 | 2016-07-06 | 信泰光学(深圳)有限公司 | Coaxial focusing lens group adjusting mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20160429 |