CN101470244B - Lens component - Google Patents
Lens component Download PDFInfo
- Publication number
- CN101470244B CN101470244B CN2007102035128A CN200710203512A CN101470244B CN 101470244 B CN101470244 B CN 101470244B CN 2007102035128 A CN2007102035128 A CN 2007102035128A CN 200710203512 A CN200710203512 A CN 200710203512A CN 101470244 B CN101470244 B CN 101470244B
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- China
- Prior art keywords
- focus control
- ring
- semi
- lens barrel
- cylinders
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Abstract
A lens module includes a lens seat and a lens cone, wherein the lens cone is disposed on the lens seat. The lens module further comprises at least one focusing device including two semicircular cylinders, wherein the two semicircular cylinders are respectively engaged with the outer surface of the lens cone while two ends of each semicircular cylinder are respectively and fixedly connected correspondingly for fixing the two semicircular cylinder and the lens cone tightly, and the frictional force between the two semicircular cylinders and the lens cone is larger than the rotational drag of the lens cone. The lens module drives the lens cone to rotate for focusing the lens module through the frictional force between the focusing device and the lens cone. The lens module has the advantages of simple structure and convenient fabrication.
Description
Technical field
The present invention relates to a kind of camera lens technology, relate in particular to a kind of lens assembly that is used for projector.
Background technology
Projector lens is in the focusing process, and the focus control that general using is arranged on the lens barrel is focused.Usually, focus control and lens barrel are offered screw respectively, tighten up and make between focus control and the lens barrel by screw between the screw of focus control and lens barrel to cooperate rotation.
Yet, on focus control and lens barrel, offer the complex structure that screw can make lens assembly, the difficulty of producing lens assembly increases, and production process is loaded down with trivial details simultaneously.
Summary of the invention
In view of this, be necessary to provide lens assembly a kind of simple in structure, easy to make.
A kind of lens assembly, it comprises a microscope base and a lens barrel.Described lens barrel is arranged on the described microscope base.Described lens assembly comprises at least one focus control, and described focus control comprises two semi-ring cylinders.Described two semi-ring cylinders match with the outside surface of described lens barrel respectively and the two ends of described two semi-ring cylinders corresponding respectively affixed so that described two semi-ring cylinders and described lens barrel tighten up.The resistance that friction force between described two semi-ring cylinders and the described lens barrel is rotated greater than described lens barrel.
Compared to prior art, described lens assembly drives described lens barrel by the friction force between focus control and the described lens barrel and rotates to finish the focusing of lens assembly.Described lens assembly is simple in structure, and is easy to make.
Description of drawings
Fig. 1 is the projection lens assembly stereographic map of first embodiment of the present invention.
Fig. 2 is the projection lens assembly three-dimensional exploded view of first embodiment of the present invention.
Fig. 3 is the projection lens assembly stereographic map of second embodiment of the present invention.
Fig. 4 is the projection lens assembly stereographic map of the 3rd embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present invention is described in further detail.
See also Fig. 1 and Fig. 2, it is a lens assembly 100 of the present invention, and it comprises a microscope base 10, lens barrel 20, a focusing ring 40 and a focus control 60.The two ends of described lens barrel 20 are matched fixing with described microscope base 10 and described focusing ring 40 respectively.Described focus control 60 is sheathed on the described lens barrel 20 and described focus control 60 matches with described lens barrel 20 to drive described lens barrel 20 rotations, thereby the eyeglasses in the driving lens barrel 20 move described lens assembly 100 is focused.
The structure of lens barrel 20 moves along optical axis direction and gets final product along with the rotation of lens barrel 20 for making the eyeglass (figure does not show) that is arranged in the lens barrel 20.In the present embodiment, lens barrel 20 comprises an inner core 22 and a urceolus 24.Accommodate a set of contact lenses (figure does not show) in the described inner core 22.Inner core 22 is contained in the described urceolus 24.The eyeglass that the rotation of urceolus 24 drives in the inner core 22 moves along optical axis direction.
Accommodate a set of contact lenses (figure does not show) in the described focusing ring 40.Focusing ring 40 comprises a boss 42, and described boss 42 matches with the inner core 22 of lens barrel 20.The structure of focusing ring 40 is that the rotation of focusing ring 40 can drive the eyeglasses that are arranged in the focusing ring 40 and moves along optical axis direction and get final product.
Half and half ring cylinder 62 match with the outside surface of lens barrel 20 respectively and the corresponding respectively connection in two ends of two semi-ring cylinders 62 so that two semi-ring cylinders 62 tighten up with lens barrel 20.The resistance that friction force between two semi-ring cylinders 62 and the lens barrel 20 is rotated greater than described lens barrel 20.In the present embodiment, two semi-ring cylinders 62 are connected by the mode of being spirally connected.The two ends of half and half ring cylinder 62 are offered 624, two semi-ring cylinders 62 of a screw respectively respectively by two screws 68 and corresponding screw 624 bolts.The external diameter of the internal diameter of focus control 60 and described urceolus 24 is suitable.
In the focusing process, drive focus control 60 around lens barrel 20 rotations by stirring driving lever 66.Focus control 60 drives urceolus 24 rotations by two semi-ring cylinders 62 and friction force between the lens barrel 20, and then drives and be arranged at inner core 22 interior eyeglasses and move along optical axis direction described lens assembly 100 is focused.
See also Fig. 3, it is the lens assembly 200 of second embodiment of the invention, and the lens assembly 100 of itself and first embodiment is basic identical, and difference is that the position of focus control is provided with difference.Other structures are identical with first embodiment, do not repeat them here.
In the present embodiment, lens assembly 200 comprises a focus control 80, and focus control 80 is identical with focus control 60 structures of first embodiment, and difference is that focus control 80 is sheathed on the outside surface of the boss 42 of focusing ring 40.Focus control 80 comprises that two semi-ring cylinders 82, one hang down and is located at lug 84 and a driving lever 86 that is convexly set on the lug 84 of any semi-ring cylinder 82.
Two semi-ring cylinders 82 match with the outside surface of the boss 42 of focusing ring 40 respectively and the corresponding respectively connection in two ends of described two semi-ring cylinders 82 so that the boss 42 of described two semi-ring cylinders 82 and focusing ring 40 tighten up.The resistance that friction force between the boss 42 of two semi-ring cylinders 82 and focusing ring 40 is rotated greater than described focusing ring 40.The external diameter of the internal diameter of focus control 80 and boss 42 is suitable.
In the focusing process, drive focus control 80 around focusing ring 40 rotations by stirring driving lever 86.Focus control 80 drives focusing ring 40 rotations by the friction force between the boss 42 of two semi-ring cylinders 82 and focusing ring 40, and then drives and be arranged at focusing ring 40 interior eyeglasses and move along optical axis direction described lens assembly 200 is focused.
See also Fig. 4, it is the lens assembly 300 of third embodiment of the invention, and the lens assembly 100 of itself and first embodiment is basic identical, and difference is the difference that is provided with of focus control.Other structures are identical with first embodiment, do not repeat them here.
In the present embodiment, lens assembly 300 comprises one first focus control 90 and one second focus control 94.Described first focus control 90 and described second focus control 94 are sheathed on the outside surface of the boss 42 of the outside surface of urceolus 24 of lens barrel 20 and focusing ring 40 respectively.The structure of first focus control 90 and second focus control 94 is identical with the structure of the focus control 60 in first embodiment.
In the focusing process, drive first focus control 90 around lens barrel 20 rotations by stirring driving lever 922.Friction force between first focus control 90 and the lens barrel 20 drives urceolus 24 rotations, and then drives the eyeglasses that are arranged in the inner core 22 and move along optical axis direction described lens assembly 300 is focused.Drive second focus control 94 around focusing ring 40 rotations by stirring driving lever 962.Friction force between the boss 42 of second focus control 94 and focusing ring 40 drives focusing ring 40 rotations, and then drives the eyeglasses that are arranged in the focusing ring 40 and move along optical axis direction described lens assembly 300 is focused.
Compared to prior art, described focus control is arranged on the lens barrel and moves along optical axis direction by the eyeglass in the frictional force band moving lens barrel between focus control and the lens barrel and focuses. Focus control also can be arranged on the focusing ring and drive focusing ring by the frictional force between focus control and the focusing ring and rotate to drive eyeglass in the focusing ring and move along optical axis direction and focus. Lens assembly also can arrange first focus control and second focus control, and lens assembly moves along optical axis direction with the eyeglass in driving lens barrel and the focusing ring with the rotation of moving lens barrel and focusing ring by the rotation of first focus control and second focus control respectively and focuses. Lens assembly is simple in structure, and is easy to make.
In addition, those skilled in the art can also do other variation in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention all should be included in the present invention's range required for protection.
Claims (9)
1. lens assembly, it comprises a microscope base and a lens barrel, described lens barrel is arranged on the described microscope base, it is characterized in that, described lens assembly comprises at least one focus control, described focus control comprises two semi-ring cylinders, described two semi-ring cylinders match with the outside surface of described lens barrel respectively and the two ends of described two semi-ring cylinders corresponding respectively affixed so that described two semi-ring cylinders and described lens barrel tighten up the resistance that the friction force between described two semi-ring cylinders and the described lens barrel is rotated greater than described lens barrel.
2. lens assembly as claimed in claim 1 is characterized in that, described focus control also comprises a driving lever, and described driving lever is convexly set on any semi-ring cylinder.
3. lens assembly as claimed in claim 2 is characterized in that, described focus control also comprises a lug, and described lug hangs down and is located at described any semi-ring cylinder, and described driving lever is convexly set on the described lug.
4. lens assembly as claimed in claim 3 is characterized in that, described driving lever and described lug and described any semi-ring cylinder are one-body molded.
5. lens assembly as claimed in claim 1, it is characterized in that, described focus control also comprises two screws, a screw is offered at the two ends of described two semi-ring cylinders respectively, the screw at the two ends of described two semi-ring cylinders corresponding respectively by described screw bolt so that described focus control be sheathed on the described lens barrel.
6. lens assembly as claimed in claim 1, it is characterized in that, described lens assembly also comprises a focusing ring, described focusing ring is convexly equipped with a boss, described two semi-ring cylinders match with the outside surface of the boss of described focusing ring respectively and the two ends of described two semi-ring cylinders corresponding respectively affixed so that the boss of described two semi-ring cylinders and described focusing ring tightens up the resistance that the friction force between the boss of described two semi-ring cylinders and described focusing ring is rotated greater than described focusing ring.
7. lens assembly as claimed in claim 1, it is characterized in that, described lens assembly also comprises a focusing ring, described focusing ring is convexly equipped with a boss, described at least one focus control is one first focus control and one second focus control, described first focus control comprises two semi-ring cylinders, two semi-ring cylinders of described first focus control match with the outside surface of described lens barrel respectively and the two ends of two semi-ring cylinders of described first focus control corresponding respectively affixed so that described first focus control and described lens barrel tighten up, the resistance that friction force between described first focus control and the described lens barrel is rotated greater than described lens barrel, described second focus control comprises two semi-ring cylinders, two semi-ring cylinders of described second focus control match with the outside surface of the boss of described focusing ring respectively and the two ends of two semi-ring cylinders of described second focus control corresponding respectively affixed so that the boss of described second focus control and described focusing ring tightens up the resistance that the friction force between the boss of described second focus control and described focusing ring is rotated greater than described focusing ring.
8. lens assembly as claimed in claim 7 is characterized in that, described first focus control also comprises one first driving lever, and described first driving lever is convexly set on any semi-ring cylinder of first focus control.
9. lens assembly as claimed in claim 7 is characterized in that, described second focus control also comprises one second driving lever, and described second driving lever is convexly set on any semi-ring cylinder of second focus control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102035128A CN101470244B (en) | 2007-12-28 | 2007-12-28 | Lens component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102035128A CN101470244B (en) | 2007-12-28 | 2007-12-28 | Lens component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101470244A CN101470244A (en) | 2009-07-01 |
| CN101470244B true CN101470244B (en) | 2011-01-26 |
Family
ID=40827869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007102035128A Expired - Fee Related CN101470244B (en) | 2007-12-28 | 2007-12-28 | Lens component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101470244B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809799B (en) * | 2012-07-23 | 2014-10-15 | 海信集团有限公司 | Lens focusing device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6025964A (en) * | 1997-05-16 | 2000-02-15 | Canon Kabushiki Kaisha | Optical apparatus |
| CN101042458A (en) * | 2006-03-24 | 2007-09-26 | 三洋电机株式会社 | Lens driving apparatus and optical pickup unit having the same |
-
2007
- 2007-12-28 CN CN2007102035128A patent/CN101470244B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6025964A (en) * | 1997-05-16 | 2000-02-15 | Canon Kabushiki Kaisha | Optical apparatus |
| CN101042458A (en) * | 2006-03-24 | 2007-09-26 | 三洋电机株式会社 | Lens driving apparatus and optical pickup unit having the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101470244A (en) | 2009-07-01 |
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| C06 | Publication | ||
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Granted publication date: 20110126 Termination date: 20151228 |
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| EXPY | Termination of patent right or utility model |