CN100395648C - Automatic zoom lens focusing device - Google Patents
Automatic zoom lens focusing device Download PDFInfo
- Publication number
- CN100395648C CN100395648C CNB021468931A CN02146893A CN100395648C CN 100395648 C CN100395648 C CN 100395648C CN B021468931 A CNB021468931 A CN B021468931A CN 02146893 A CN02146893 A CN 02146893A CN 100395648 C CN100395648 C CN 100395648C
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- CN
- China
- Prior art keywords
- setting element
- magnet
- focusing device
- zoom lens
- automatic zoom
- 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 present invention discloses an automatic zooming device used for photographing devices. The automatic zooming device comprises a lens, a first positioning element, a second positioning element, a magnet and a coil, wherein the second positioning element is connected with the lens and is also engaged with the first positioning element, and the magnet is connected with the second positioning element; the coil is arranged on the periphery of the magnet. When the coil is supplied with current, the magnet can rotate under the action of magnetic force induced by the current in the coil to further drive the second positioning element to rotate. When rotating, the second positioning element can move along the first positioning element to further drive the lens to move forwards or backwards for achieving the aim of moving the position of the lens.
Description
Technical field
The present invention relates to a kind of Automatic zoom lens focusing device, particularly relate to a kind of Automatic zoom lens focusing device that is used for camera.
Background technology
Zoom lens in traditional camera (zoom lens) comprises with manual mode zoom and mechanically autozoom.Manually zoom is promptly with manual rotating lens, camera lens stretched out or the mode of shrinking back is backward focused forward.Generally then in the other drive unit that adds of camera lens, for example motor utilizes drive unit to drive camera lens and moves in autozoom.
Fig. 3 is the Automatic zoom lens focusing device of prior art.This Automatic zoom lens focusing device comprises a camera lens 1, an extension 3, a motor 5 and a screw rod 7.This extension 3 extends from camera lens 1, and has the perforate (not shown) that can supply screw rod 7 to mesh.So, screw rod 7 can connect camera lens 1 by extension 3.5 drive screws of motor 7 rotate.So, when screw rod 7 rotated, camera lens 1 was able to move forward or backward along screw rod 7, as the direction of figure upward arrow sign.
Generally speaking, the volume of existing autozoom camera lens is subjected to the volume restrictions of motor 5, makes the volume of whole camera lens 1 to reduce.And say under little, the lightweight trend of cube the problem that to work out lighter littler electronic product be significant at electronic product now.
Summary of the invention
A purpose of the present invention is to reduce the volume and the weight of Automatic zoom lens focusing device in the camera.
A further object of the present invention is to reduce the noise that the camera lens of camera is produced in the zoom process.
The object of the present invention is achieved like this, and a kind of Automatic zoom lens focusing device promptly is provided, and is used for a camera, and this Automatic zoom lens focusing device comprises: a camera lens; And one first setting element (first positiondevice), this first setting element is arranged in this camera; One second setting element (secondposition device), this second setting element connects this camera lens, and mesh this first setting element, wherein, when this second setting element rotates, this second setting element moves in a spiral manner along this first setting element, further drives this camera lens and moves; One magnet (magnet), this magnet connect this second setting element, and also connect this camera lens in the mode of socket; And a coil (coil), this coil is arranged at the periphery of this magnet, and when this coil fed an electric current, this magnet rotated, and for driving this second setting element, and then changed the position of this camera lens.
Further, Automatic zoom lens focusing device of the present utility model, its second setting element can further drive camera lens and advance or retreat, and change the position of camera lens.When coil feeds electric current, magnet will be subjected to the magnetic force that the electric current on the coil responds to and rotate.So, if change sense of current, then magnet optionally clockwise rotates or rotates counterclockwise, and further drives second setting element and rotates.
Description of drawings
Fig. 1 is the top view of the embodiment of the invention;
Fig. 2 is the exploded view of the embodiment of the invention;
Fig. 3 is existing camera lens Automatic zoom lens focusing device.
Embodiment
The present invention is a kind of camera that is used for, for example Automatic zoom lens focusing device in camera or the video camera.Fig. 1 and Fig. 2 are respectively the top view and the exploded view of the Automatic zoom lens focusing device of the embodiment of the invention.Present embodiment comprises a camera lens (lens) 11, one first setting element (first position device), 21,1 second setting element (second position device), 23, one magnet (magnet) 25 and a coil (coil) 27.
As Fig. 1 and shown in Figure 2, first setting element 21 is arranged in the camera, and the position is fixed.Second setting element 23 supplies to connect camera lens 11, and meshes first setting element 21.Therefore, when second setting element 23 rotated, second setting element 23 can move axially along first setting element 21, i.e. the direction that arrow indicates among Fig. 1.So, second setting element 23 can further drive camera lens 11 and advance or retreat, and changes the position of camera lens 11, and further changes the focal length of camera.
The running principle of magnet 25 in the Automatic zoom lens focusing device and the general motor of coil 27 bases designs.Magnet 25 connects second setting element 23.And coil 27 is arranged at the periphery of magnet 25.When coil 27 feeds electric currents, magnet 25 will be subjected to the magnetic force that the electric current on the coil 27 responds to and rotate.If change sense of current, then magnet 25 also can change the direction of rotation, for example clockwise rotates or rotates counterclockwise.Owing to magnet 25 connects second setting element 23, therefore when magnet 25 rotates, can drive second setting element 23 and rotate, reach the purpose that driving camera lens 11 advances or retreats.
In the present embodiment, magnet 25 is a tubular magnet, and the distribution scenario of the N utmost point and the S utmost point as shown in Figure 1.Magnet 25 in the present embodiment is except that connecting second setting element 23, and also the mode with socket connects camera lens 11.So, can dwindle volume and the weight reduction of Automatic zoom lens focusing device in camera.On the other hand, because the embodiment of the invention does not need this driving camera lens 11 of conventional motor to move, therefore, in camera lens 11 zoom processes, can reduce noise and produce.
In addition, first setting element 21 comprises screw element (screw) or replaces with the element (helicoid thread device) with screw thread.Second setting element 23 is then selected the structure of engageable first setting element 21, for example screw element or screwing element.
Below only embodiments of the invention are described, but can not be limited the present invention, various variations or modification according to spirit of the present invention is done all are included in the claim of the present invention.
Claims (7)
1. an Automatic zoom lens focusing device is used for a camera, and this Automatic zoom lens focusing device comprises:
One camera lens; And
One first setting element, this first setting element is arranged in this camera;
One second setting element, this second setting element connects this camera lens, and meshes this first setting element, wherein, when this second setting element rotated, this second setting element moved in a spiral manner along this first setting element, further drives this camera lens and moves;
One magnet, this magnet connect this second setting element, and also connect this camera lens in the mode of socket; And
One coil, this coil is arranged at the periphery of this magnet, and when this coil fed an electric current, this magnet rotated, and supplied to drive this second setting element, and then changed the position of this camera lens.
2. Automatic zoom lens focusing device as claimed in claim 1, wherein this first setting element comprises a screw element.
3. Automatic zoom lens focusing device as claimed in claim 1, wherein this first setting element comprises a screwing element.
4. Automatic zoom lens focusing device as claimed in claim 1, wherein this second setting element comprises a screw element.
5. Automatic zoom lens focusing device as claimed in claim 1, wherein this second setting element comprises a screwing element.
6. Automatic zoom lens focusing device as claimed in claim 1, wherein this magnet comprises a tubular magnet.
7. Automatic zoom lens focusing device as claimed in claim 1, wherein this magnet clockwise rotates or rotates counterclockwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021468931A CN100395648C (en) | 2002-10-18 | 2002-10-18 | Automatic zoom lens focusing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021468931A CN100395648C (en) | 2002-10-18 | 2002-10-18 | Automatic zoom lens focusing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1490662A CN1490662A (en) | 2004-04-21 |
| CN100395648C true CN100395648C (en) | 2008-06-18 |
Family
ID=34148683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021468931A Expired - Fee Related CN100395648C (en) | 2002-10-18 | 2002-10-18 | Automatic zoom lens focusing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100395648C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100378570C (en) * | 2004-05-14 | 2008-04-02 | 光宝科技股份有限公司 | Automatic focusing lens |
| CN100529943C (en) * | 2004-12-11 | 2009-08-19 | 鸿富锦精密工业（深圳）有限公司 | Automatic focusing lens module |
| CN100438573C (en) * | 2006-03-17 | 2008-11-26 | 华硕电脑股份有限公司 | Small-sized photographic module |
| CN101344634A (en) * | 2007-07-13 | 2009-01-14 | 鑫视科技股份有限公司 | Magnetic controlled zoom lens module group |
| CN109998475A (en) * | 2019-05-07 | 2019-07-12 | 杭州智诠科技有限公司 | A kind of ophthalmoscopic image check device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07301851A (en) * | 1994-05-06 | 1995-11-14 | Olympus Optical Co Ltd | Camera |
| JPH08234092A (en) * | 1995-02-24 | 1996-09-13 | Sony Corp | Electromagnetic driving device, zooming controller and focusing controller using the same |
| JPH08278553A (en) * | 1995-04-07 | 1996-10-22 | Asahi Optical Co Ltd | Camera using magnetic recording photographic film |
| JP2000310808A (en) * | 1999-04-26 | 2000-11-07 | Canon Inc | Illumination device and photographic device using the same |
-
2002
- 2002-10-18 CN CNB021468931A patent/CN100395648C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07301851A (en) * | 1994-05-06 | 1995-11-14 | Olympus Optical Co Ltd | Camera |
| JPH08234092A (en) * | 1995-02-24 | 1996-09-13 | Sony Corp | Electromagnetic driving device, zooming controller and focusing controller using the same |
| JPH08278553A (en) * | 1995-04-07 | 1996-10-22 | Asahi Optical Co Ltd | Camera using magnetic recording photographic film |
| JP2000310808A (en) * | 1999-04-26 | 2000-11-07 | Canon Inc | Illumination device and photographic device using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1490662A (en) | 2004-04-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: XULI CO., LTD. TO: GUANGBAO TECHNOLOGY CO., LTD. |
|
| CP02 | Change in the address of a patent holder |
Address after: Taipei city of Taiwan Province Applicant after: Lite-On Technology Corporation Address before: Taipei city of Taiwan Province Applicant before: Xuli Co., Ltd. |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080618 Termination date: 20131018 |