CN102749789A - Focusing mechanism with multi-precision - Google Patents
Focusing mechanism with multi-precision Download PDFInfo
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- CN102749789A CN102749789A CN2011101026382A CN201110102638A CN102749789A CN 102749789 A CN102749789 A CN 102749789A CN 2011101026382 A CN2011101026382 A CN 2011101026382A CN 201110102638 A CN201110102638 A CN 201110102638A CN 102749789 A CN102749789 A CN 102749789A
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- screw rod
- pedestal
- focusing
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Abstract
The invention relates to a focusing mechanism with multi-precision. The focusing mechanism with the multi-precision comprises a foundation base for installing a photosensitive assembly, a first focusing unit, a second focusing unit and a focusing lens, the first focusing unit comprises a first group frame, a first screw installed on the foundation base and a first nut which is connected with the first group frame and screwed on the first screw, the first screw is provided with first screw pitch, the first group frame slides relative to the foundation base vertically along the first screw, the second focusing unit comprises a second group frame, a second screw installed on the first group frame and a second nut which is connected with the second group frame and screwed on the second screw, the second screw is provided with second screw pitch, and the second group frame slides relative to the first group frame vertically along the second screw. The focusing mechanism meets requirements for speed and accuracy through different screw pitch of the first screw and the second screw.
Description
Technical field
The invention relates to a kind of optical lens, be meant the Focusing mechanism of the multiple precision of a kind of tool especially.
Background technology
A kind of Focusing mechanism in the past; Comprise the pedestal that supplies photosensory assembly to install, relatively this pedestal up and down slippage crowd's frame, be installed on eyeglass on this group frame, be installed on this pedestal and drive this group moving screw rod of frameing shift, and be screwed together in this screw rod and connect the nut of this group frame.Through this screw rod rotation of motor driven, and then, make relative this photosensory assembly of this eyeglass focus by this this group of nut drive frame this pedestal slippage up and down relatively.
The structure of aforementioned Focusing mechanism is existing common technique, and for example TaiWan, China I310848 number discloses, and is one of a kind of existing Focusing mechanism form; Shortcoming is, when this screw design is coarse pitch, though can accelerate this group frame speed of slippage up and down; But sacrificed this group frame focusing precision of this pedestal relatively; If when this screw design is fine pitch,, sacrificed this group frame speed of slippage up and down though can improve this group frame focusing precision of this pedestal relatively; That is to say that existing Focusing mechanism can't satisfy the demand of speed and precision simultaneously.
Therefore, a kind of Focusing mechanism that can satisfy the demand of speed and precision simultaneously is one of research and development target of present relevant dealer.
Summary of the invention
The technical matters that the present invention will solve is, can't take into account the defective of speed and accuracy requirement to Focusing mechanism in the prior art, and a kind of Focusing mechanism of the multiple precision of tool of the demand that can satisfy speed and precision simultaneously is provided.
The technical scheme that the present invention is adopted for its technical matters of solution is; The Focusing mechanism of the multiple precision of a kind of tool is provided; Comprise pedestal, the first focusing unit, the second focusing unit; And to focus lens; This first focusing unit comprises first group of frame, is installed on first motor of this pedestal, first screw rod that is installed on this pedestal and receives this first motor driven, and connects these first group of frame and be screwed together in first nut of this first screw rod, and this first screw rod has first pitch; These first group of frame is along this pedestal slippage up and down relatively of this first screw rod; This second focusing unit comprises one second group of frame, is installed on these first group of frame and drives second motor of this second screw rod rotation, second screw rod that is installed on these first group of frame and receives this second motor driven that reach second nut that connects these second group of frame and be screwed together in this second screw rod, this second screw rod has second pitch that is different from first pitch; These second group of frame is along these the first group of frame slippage up and down relatively of this second screw rod, and this is installed on this second group of frame to focus lens.
Effect of the present invention is; This pedestal slippage up and down relatively of these first group of frame, these the first group of frame slippage up and down relatively of these second group of frame; And then drive this to the relative photosensory assembly focusing of focus lens; And inequality through the pitch of this first screw rod and second screw rod, let this Focusing mechanism reach the demand that satisfies speed and precision by this respectively.
Description of drawings
Fig. 1 is a stereographic map, and first preferred embodiment of the Focusing mechanism of the multiple precision of tool of the present invention is described;
Fig. 2 is a top view, explains that pedestal, the first focusing unit, the second focusing unit of this first preferred embodiment reaches focus lens;
Fig. 3 is a stereographic map, this pedestal and this first focusing unit of this first preferred embodiment is described, and is omitted this second focusing unit;
Fig. 4 is stereographic map figure, and this first focusing unit and this second focusing unit of this first preferred embodiment is described; And
Fig. 5 is the turnover cut-open view along Fig. 2 center line V-V, this pedestal, first group of frame, second group of frame of this first preferred embodiment is described and this is to focus lens.
Embodiment
About aforementioned and other technology contents, characteristics and effect of the present invention, in the detailed description of a preferred embodiment of following conjunction with figs., can clearly appear.
Consult Fig. 1, Fig. 2 and Fig. 5, first preferred embodiment of the Focusing mechanism of the multiple precision of tool of the present invention comprises pedestal 1, the first focusing unit 2, the second focusing unit 3, and to focus lens 4.
This pedestal 1 is used to supply photosensory assembly (figure does not show) to install.
This first focusing unit 2 comprises that plural number is installed on first guide pillar 21 of this pedestal 1, is sheathed on first group of frame 22 of these first guide pillars 21, first motor 23 that is installed on this pedestal 1, first screw rod 24 that is installed on this pedestal 1 and receives that this first motor 23 drives, connect these first group of frame 22 and be screwed together in this first screw rod 24 first nut 25, be installed on first of this pedestal 1 and detect assembly 26, and connect first of these first group of frame 22 and detect catch 27 (consulting Fig. 4) should first detecting assembly 26.
This first screw rod 24 has first pitch, and in this first preferred embodiment, first pitch is designed to 0.64mm.
Cooperate and consult Fig. 3; This first motor 23 rotates through this first screw rod 24 of reduction train gear drive; Be connected in first nut 25 on these first group of frame 22 then because of the rotation of this first screw rod 24 moves up and down along this first screw rod 24, and then drive these first group of frame 22 along these first guide pillar, 21 relative these pedestal slippages about in the of 1.
This first detects assembly 26 and this first and detects the position of making zero that catch 27 is used to set up these first group of frame, 22 relative these pedestals 1.
This second focusing unit 3 comprises two second guide pillars 31 that are installed on this pedestal 1 and first group of frame 22 respectively, be sheathed on second group of frame 32 of these second guide pillars 31, be installed on these first group of frame 22 second motor 33, second screw rod 34 that is installed on these first group of frame 22 and receives that this second motor 33 drives, be connected these second group of frame 32 and be screwed together in this second screw rod 34 second nut 35, be installed on second of these first group of frame 22 and detect assembly 36, and connect second of these second group of frame 32 and detect catch 37 (consulting Fig. 4) should second detecting assembly 36.
This second detects assembly 36 and this second and detects the position of making zero that catch 37 is used to set up these second group of frame, 32 relative these first group of frames 22.
These first group of frame 22 is positioned at this second group of frame 32 periphery, and in addition, this second screw rod 34 has second pitch that is different from first pitch; In this first preferred embodiment; First pitch of this first screw rod 24 is greater than second pitch of this second screw rod 34, and wherein, this second pitch is 0.35mm.
Cooperate and consult Fig. 4; This second motor 33 directly drives this second screw rod 34 and rotates; Second nut 35 on these second group of frame 32 then moves up and down along this second screw rod 34 along with the rotation of this second screw rod 34, and then drives these second group of frame 32 along these second guide pillar, 31 relative these first group of frame slippages about in the of 22.
This is installed on this second group of frame 32 to focus lens 4; This passes through these second group of frame, 32 relative these first group of frames 22, these first group of frame, 22 relative these pedestal slippages about in the of 1 to focus lens 4; Drive makes this to focus lens 4 relative these photosensory assembly focusings; And inequality through the pitch of this first screw rod 24 and second screw rod 34, let this Focusing mechanism reach the demand that satisfies speed and precision by this respectively.
What illustrate further is; When needs are focused at a high speed; This first motor 23 drives this first group of frame 22 through this first screw rod 24 and first nut 25, and then together drives this second group of frames 32 and to focus lens 4 relative these pedestal slippages about in the of 1, and when the needs high precision is focused; Change and adopt this second motor 33 to drive this second group of frame 32, and then drive this focus lens 4 relative these first group of frame 22 and pedestal slippage about in the of 1 through this second screw rod 34 and second nut 35.
In addition, except selecting the use, also can make this first motor 23, second motor 33 moving in the same way or reverse moving in response to different demands at this first motor 23 and 33 in second motor.When this first motor 23 and second motor 33 are moving in the same way, can this first focusing unit 2 of superposition and the stroke of the second focusing unit 3, obtain longer focusing range.And when this first motor 23 and second motor, 33 reverse moving; Can be in focus process; Wherein one be exclusively used in this is pushed away nearly this pedestal 1 to focus lens 4 by this first motor 23 and second motor 33; Another person is exclusively used in this is zoomed out from this pedestal 1 focus lens 4, and employing is just delayed into anxious time or delayed back radical focusing mode.
And utilize this first screw rod 24 different with the pitch of second screw rod 34; Can produce various precision combinations; For example first pitch adds the difference or the like of difference, first pitch and twice second pitch of second pitch, first pitch and second pitch, lets this Focusing mechanism possess to focus more flexibly precision to change.
In sum; Because first pitch of this first screw rod 24 is greater than second pitch of second screw rod 34; When adopting this first motor 23 and first screw rod 24 to drive these first group of frame 22, reach high-speed focusing, and adopt this second motor 33 and second screw rod 34 to drive these second group of frame 32; Reach the high precision focusing; Just inequality by the pitch of this first screw rod 24 and second screw rod 34, let this Focusing mechanism reach the demand that satisfies speed and precision by this respectively, so can reach the object of the invention really.
The above is merely preferred embodiment of the present invention, can not limit the scope that the present invention implements with this, and promptly all simple equivalent of doing according to claim of the present invention and invention description change and modify, and all still belongs in the scope that patent of the present invention contains.
Claims (6)
1. the Focusing mechanism of the multiple precision of tool is characterized in that, comprises:
Pedestal;
The first focusing unit; Comprise first group of frame, be installed on this pedestal first motor, be installed on this pedestal and receive first screw rod of this first motor driven; Reach first nut that connects these first group of frame and be screwed together in this first screw rod; This first screw rod has first pitch, and these first group of frame is along this pedestal slippage up and down relatively of this first screw rod;
The second focusing unit; Comprise second group of frame, be installed on these first group of frame and drive second motor of this second screw rod rotation, second screw rod that is installed on these first group of frame and receives this second motor driven; Reach second nut that connects these second group of frame and be screwed together in this second screw rod; This second screw rod has second pitch that is different from first pitch, and these second group of frame is along these the first group of frame slippage up and down relatively of this second screw rod; And
To focus lens, be installed on this second group of frame.
2. the Focusing mechanism of the multiple precision of tool according to claim 1 is characterized in that, this first focusing unit comprises that also plural number is installed on first guide pillar of this pedestal, and these first group of frame is along this pedestal slippage up and down relatively of these first guide pillars.
3. the Focusing mechanism of the multiple precision of tool according to claim 1; It is characterized in that; This second focusing unit also comprises two second guide pillars that are installed on this pedestal and first group of frame respectively, and these second group of frame is along these the first group of frame slippage up and down relatively of these second guide pillars.
4. the Focusing mechanism of the multiple precision of tool according to claim 1 is characterized in that, this first focusing unit comprises that also being installed on first of this pedestal detects assembly, and connects first of these first group of frame and detect catch should first detecting assembly.
5. the Focusing mechanism of the multiple precision of tool according to claim 1 is characterized in that, this second focusing unit comprises that also being installed on second of these first group of frame detects assembly, and connects second of these second group of frame and detect catch should second detecting assembly.
6. the Focusing mechanism of the multiple precision of tool according to claim 1 is characterized in that, these first group of frame is positioned at this second group of frame periphery, and first pitch of this first screw rod is greater than second pitch of this second screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101026382A CN102749789A (en) | 2011-04-22 | 2011-04-22 | Focusing mechanism with multi-precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101026382A CN102749789A (en) | 2011-04-22 | 2011-04-22 | Focusing mechanism with multi-precision |
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| Publication Number | Publication Date |
|---|---|
| CN102749789A true CN102749789A (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101026382A Pending CN102749789A (en) | 2011-04-22 | 2011-04-22 | Focusing mechanism with multi-precision |
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| CN (1) | CN102749789A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104238093A (en) * | 2013-06-18 | 2014-12-24 | 信泰光学(深圳)有限公司 | Zoom lens and focusing mechanism of optical instrument |
| CN104423120A (en) * | 2013-09-02 | 2015-03-18 | 信泰光学(深圳)有限公司 | Zoom lens and focusing mechanism for optical instrument |
| CN104765121A (en) * | 2015-03-18 | 2015-07-08 | 苏州佳世达电通有限公司 | Adjustment structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4130340A (en) * | 1977-07-13 | 1978-12-19 | Keuffel & Esser Company | Two-speed telescope focusing mechanism |
| US4309098A (en) * | 1978-12-01 | 1982-01-05 | Polaroid Corporation | Autofocus cine camera having automatic variable speed focusing |
| TW200726216A (en) * | 2005-12-19 | 2007-07-01 | Asia Optical Co Inc | Automatic focusing methods and image capture devices utilizing the same |
| CN101206297A (en) * | 2006-12-20 | 2008-06-25 | 财团法人工业技术研究院 | Piezo-electricity drive type optical lens |
| CN101276035A (en) * | 2007-03-27 | 2008-10-01 | 亚洲光学股份有限公司 | Lens capable of preventing spill light |
| CN101672970A (en) * | 2009-10-23 | 2010-03-17 | 东莞光阵显示器制品有限公司 | Counterflow focusing method and device implementing method |
-
2011
- 2011-04-22 CN CN2011101026382A patent/CN102749789A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4130340A (en) * | 1977-07-13 | 1978-12-19 | Keuffel & Esser Company | Two-speed telescope focusing mechanism |
| US4309098A (en) * | 1978-12-01 | 1982-01-05 | Polaroid Corporation | Autofocus cine camera having automatic variable speed focusing |
| TW200726216A (en) * | 2005-12-19 | 2007-07-01 | Asia Optical Co Inc | Automatic focusing methods and image capture devices utilizing the same |
| CN101206297A (en) * | 2006-12-20 | 2008-06-25 | 财团法人工业技术研究院 | Piezo-electricity drive type optical lens |
| CN101276035A (en) * | 2007-03-27 | 2008-10-01 | 亚洲光学股份有限公司 | Lens capable of preventing spill light |
| CN101672970A (en) * | 2009-10-23 | 2010-03-17 | 东莞光阵显示器制品有限公司 | Counterflow focusing method and device implementing method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104238093A (en) * | 2013-06-18 | 2014-12-24 | 信泰光学(深圳)有限公司 | Zoom lens and focusing mechanism of optical instrument |
| CN104423120A (en) * | 2013-09-02 | 2015-03-18 | 信泰光学(深圳)有限公司 | Zoom lens and focusing mechanism for optical instrument |
| CN104423120B (en) * | 2013-09-02 | 2017-06-06 | 信泰光学(深圳)有限公司 | The Focusing mechanism of zoom lens and optical equipment |
| CN104765121A (en) * | 2015-03-18 | 2015-07-08 | 苏州佳世达电通有限公司 | Adjustment structure |
| CN104765121B (en) * | 2015-03-18 | 2017-05-24 | 苏州佳世达电通有限公司 | Adjustment structure |
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Application publication date: 20121024 |