CN102854603B - Semi-nested planar cam focusing mechanism - Google Patents
Semi-nested planar cam focusing mechanism Download PDFInfo
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- CN102854603B CN102854603B CN201210312946.2A CN201210312946A CN102854603B CN 102854603 B CN102854603 B CN 102854603B CN 201210312946 A CN201210312946 A CN 201210312946A CN 102854603 B CN102854603 B CN 102854603B
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- microscope base
- hole
- cam
- microscope
- connecting hole
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Abstract
A semi-nested planar cam focusing mechanism belongs to the field of cam focusing, and particularly relates to a focusing mechanism of a semi-nested optical system. The semi-nested planar cam focusing mechanism provided by the invention simplifies a cylindrical cam focusing mechanism, and meets the focusing requirement of the semi-nested optical system. The mechanism mainly comprises a first microscope base, a second microscope base, a third microscope base, a fourth microscope base, a first connecting rod, a second connecting rod, a microscope base lead rail, a planer cam, a first guide pin and a second guide pin; a relative displacement is formed between a first microscope base group formed by the first microscope base and the third microscope base, and a second microscope base group formed by the second microscope base and the fourth microscope base, and the four microscope bases form a semi-nested structure. The movement rules of the first microscope base group and the second microscope base group are respectively controlled through two cam grooves of the planar cam, and the required focusing function of the system is achieved. The semi-nested planar cam focusing mechanism is simple in structure and convenient to process, and can easily guarantee various accuracy requirements of the system.
Description
Technical field
The invention belongs to cam focusing mechanism field, particularly a kind of focus adjusting mechanism of half nested type optical system.
Background technology
Under normal circumstances, lens are circular, and the microscope base or the lens barrel that are used for being mounted with lens accordingly are also circular.In order to make simple and compact structure, easy to process, from being easy to ensure that between lens, each side such as right alignment and various tolerance on fits considers, in cam focusing mechanism field, what mostly adopt is cylindrical cam.But in some optical focusing system, cylindrical cam structure has its limitation.
In optical system as shown in Figure 1, lens a and c forms a lens combination, and lens b and d forms another lens combination.During focusing, lens a and c entirety move right, and lens b and d entirety are moved to the left, and four lens form half nesting type structure.For being similar to half nested type optical system shown in Fig. 1, adopt cylindrical cam structure to be very complicated, need to use many layer mirror cylinder shrink-fit structure, and except cam path, lens barrel also needs offer various via hole and gathering sill, be difficult to the focusing accuracy ensureing optical system generally.
Summary of the invention
In order to meet the focusing requirement of half nested type optical system, simplifying half nested type cylindrical cam focusing mechanism, the object of this invention is to provide a kind of half nested type plane cam focus adjusting mechanism.
The technical scheme that technical solution problem of the present invention is taked is, half nested type plane cam focus adjusting mechanism, comprise the first microscope base, the second microscope base, the 3rd microscope base, the 4th microscope base, first connecting rod, second connecting rod, microscope base guide rail, plane cam, the first guide pin, the second guide pin; First microscope base, the second microscope base, the 3rd microscope base, the 4th microscope base are arranged in order along optical axis direction, and only move along the microscope base guide rail parallel with optical axis; First microscope base and the 3rd microscope base are connected by first connecting rod, and relative position remains unchanged, and forms the first mirror seat set; Second microscope base and the 4th microscope base are connected by second connecting rod, and relative position remains unchanged, and forms the second mirror seat set; First mirror seat set and the second mirror seat set only have relative displacement along optical axis direction, form half nesting type structure; Plane cam is provided with the first cam path and the second cam path; First guide pin and the first microscope base are connected, and are slidably connected with the first cam path; Second guide pin and the second microscope base are connected, and are slidably connected with the second cam path.
The present invention can realize the focusing requirement of half nested type optical system, and relative to cylindrical cam, structure is simple, easy to process, is easy to the various accuracy requirements of guarantee system.
Accompanying drawing explanation
Fig. 1 is half nested type optical system schematic diagram;
Fig. 2 is the stereographic map of half nested type plane cam focus adjusting mechanism;
Fig. 3 is the stereographic map of four microscope bases and plane cam in Fig. 2;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the front view of half nested type plane cam focus adjusting mechanism along optical axis direction;
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, half nested type plane cam focus adjusting mechanism, comprising: the first microscope base 1, second microscope base 2, the 3rd microscope base 3, the 4th microscope base 4, first connecting rod 5, second connecting rod 6, microscope base guide rail 7, microscope base guide rail wins 8 in succession, plane cam 9, the first guide pin 10, second guide pin 11, nut 12, cam tracks 13, leading screw 14, cam tracks wins 15 in succession, shaft coupling 16, motor 17; First microscope base 1 is fixedly connected with by first connecting rod 5 with the 3rd microscope base 3, and relative position remains unchanged, and forms the first mirror seat set; Second microscope base 2 is fixedly connected with by second connecting rod 6 with the 4th microscope base 4, and relative position remains unchanged, and forms the second mirror seat set; Have relative displacement between first mirror seat set and the second mirror seat set, four microscope bases form half nesting type structure.This focus adjusting mechanism passes through the position of change first mirror seat set and the second mirror seat set to realize the focusing to whole system.
At least install one piece of lens in each microscope base, the first microscope base 1 symmetria bilateralis is provided with the first pilot hole 1-1, the first connecting hole 1-2; Second microscope base 2 symmetria bilateralis is provided with the second pilot hole 2-1, the second connecting hole 2-2, the first via hole 2-3; 3rd microscope base 3 symmetria bilateralis is provided with the 3rd pilot hole 3-1, the 3rd connecting hole 3-2, the second via hole 3-3; 4th microscope base 4 symmetria bilateralis is provided with the 4th pilot hole 4-1, the 4th connecting hole 4-2.In order to ensure right alignment and the consistance of the first pilot hole 1-1, the second pilot hole 2-1, the 3rd pilot hole 3-1, the 4th pilot hole 4-1, ensure right alignment and the consistance of the first connecting hole 1-2, the second connecting hole 2-2, the 3rd connecting hole 3-2, the 4th connecting hole 4-2, can adopt overall processing method, namely four mirror groups process each hole after being fixed together simultaneously.
First connecting rod 5 is through the first via hole 2-3 on the second microscope base 2, and its two ends are connected and fixed with the first connecting hole 1-2 on the first microscope base 1 and the 3rd connecting hole 3-2 on the 3rd microscope base 3 respectively, to keep the relative position of the first microscope base 1 and the 3rd microscope base 3 constant, first microscope base 1 is connected in aggregates with the 3rd microscope base 3, forms the first mirror seat set; Similarly, second connecting rod 6 is through the second via hole 3-3 on the 3rd microscope base 3, and its two ends are connected and fixed with the second connecting hole 2-2 on the second microscope base 2 and the 4th connecting hole 4-2 on the 4th microscope base 4 respectively, to keep the relative position of the second microscope base 2 and the 4th microscope base 4 constant, second microscope base 2 is connected in aggregates with the 4th microscope base 4, forms the second mirror seat set.First connecting hole 1-2, the second connecting hole 2-2, the 3rd connecting hole 3-2, the 4th connecting hole 4-2 are boss structure, if desired can this boss of reconditioning with the relative position between regulating lens holder.
The microscope base guide rail 7 parallel with optical axis is successively through the first pilot hole 1-1, the second pilot hole 2-1, the 3rd pilot hole 3-1, the 4th pilot hole 4-1 of first to fourth microscope base both sides, the right alignment of four microscope bases can be guaranteed like this, allow four microscope bases move along guide rail direction.Pilot hole on microscope base guide rail 7 and four microscope bases needs facing-up when debuging, and ensures that its tolerance on fit is in 0 ~ 0.01mm.The depth of parallelism of adjustment two microscope base guide rail 7 is also needed to make it meet system requirements when debuging.After debuging, win in succession with microscope base guide rail and 8 two microscope base guide rails 7 finally to be fixed.
Plane cam 9 is provided with the first cam path 9-1 and the second cam path 9-2, the bottom of the first microscope base 1 and the second microscope base 2 offers the first tapped blind hole 1-4 and the second tapped blind hole 2-4 respectively, first guide pin 10 is fixed in the first tapped blind hole 1-4 of the first microscope base 1 through the first cam path 9-1 screw thread, and is slidably connected with the first cam path 9-1; Second guide pin 11 is fixed in the second tapped blind hole 2-4 of the second microscope base 2 through the second cam path 9-2 screw thread, and is slidably connected with the second cam path (9-2).First guide pin 10 and the second guide pin 11 are 0 ~ 0.1mm with the tolerance on fit of cam path.
Plane cam 9 is also arranged with guide rail hole 9-3, and cam tracks 13 is through guide rail hole 9-3, and its two ends are fixed on cam tracks respectively wins in succession on 15, and plane cam 9 moves along cam tracks 13, guarantees plane cam 9 mobile accuracy.Nut 12 is fixed on the bottom of plane cam 9, and in leading screw 14 precession nut 12 and its two ends are rotatably connected and win in succession on 15 in cam tracks.Leading screw 14 is connected with motor 17 by shaft coupling 16.
The motion process of whole focusing is: motor 17 rotates, and drives leading screw 14 to rotate, thus promotion nut 12 moves, and under the guide effect of cam tracks 13, it is movable along the direction of cam tracks 13 that plane cam 9 follows nut 12.In the moving process of plane cam 9, the side of the first cam path 9-1 promotes the first guide pin 10, thus drives the first mirror seat set of being made up of the first microscope base 1 and the 3rd microscope base 3 to move forward and backward along the direction of microscope base guide rail 7; Meanwhile, the second cam path 9-2 drives the second mirror seat set of being made up of the second microscope base 2 and the 4th microscope base 4 to move forward and backward along the direction of microscope base guide rail 7 by the second guide pin 11, thus realizes the focusing to whole system.The characteristics of motion of the first mirror seat set and the second mirror seat set is determined by the characteristics of motion curve of the first cam path 9-1 and the second cam path 9-2 respectively.
Claims (6)
1. half nested type plane cam focus adjusting mechanism, it is characterized in that, comprise the first microscope base (1), the second microscope base (2), the 3rd microscope base (3), the 4th microscope base (4), first connecting rod (5), second connecting rod (6), microscope base guide rail (7), plane cam (9), the first guide pin (10), the second guide pin (11); First microscope base (1), the second microscope base (2), the 3rd microscope base (3), the 4th microscope base (4) are arranged in order along optical axis direction, and only mobile along the microscope base guide rail (7) parallel with optical axis; First microscope base (1) and the 3rd microscope base (3) are connected by first connecting rod (5), and relative position remains unchanged, and forms the first mirror seat set; Second microscope base (2) and the 4th microscope base (4) are connected by second connecting rod (6), and relative position remains unchanged, and forms the second mirror seat set; First mirror seat set and the second mirror seat set only have relative displacement along optical axis direction, form half nesting type structure; Plane cam (9) is provided with the first cam path (9-1) and the second cam path (9-2); First guide pin (10) and the first microscope base (1) are connected, and are slidably connected with the first cam path (9-1); Second guide pin (11) and the second microscope base (2) are connected, and are slidably connected with the second cam path (9-2).
2. half nested type plane cam focus adjusting mechanism as claimed in claim 1, it is characterized in that, described the first microscope base (1) symmetria bilateralis is provided with the first pilot hole (1-1), and the first microscope base (1) symmetria bilateralis is provided with the first connecting hole (1-2), bottom is provided with the first tapped blind hole (1-4); Second microscope base symmetria bilateralis is provided with the second pilot hole (2-1), and the second microscope base symmetria bilateralis is provided with the second connecting hole (2-2), and the second microscope base symmetria bilateralis is provided with the first via hole (2-3), bottom is provided with the second tapped blind hole (2-4); 3rd microscope base symmetria bilateralis is provided with the 3rd pilot hole (3-1), and the 3rd microscope base symmetria bilateralis is provided with the 3rd connecting hole (3-2), and the 3rd microscope base symmetria bilateralis is provided with the second via hole (3-3); 4th microscope base symmetria bilateralis is provided with the 4th pilot hole (4-1), and the 4th microscope base symmetria bilateralis is provided with the 4th connecting hole (4-2).
3. half nested type plane cam focus adjusting mechanism as claimed in claim 2, it is characterized in that, described the first connecting hole (1-2), the second connecting hole (2-2), the 3rd connecting hole (3-2), the 4th connecting hole (4-2) are boss structure.
4. half nested type plane cam focus adjusting mechanism as claimed in claim 1, it is characterized in that, in described the first microscope base (1), the second microscope base (2), the 3rd microscope base (3), the 4th microscope base (4), one piece of lens is at least installed.
5. half nested type plane cam focus adjusting mechanism as claimed in claim 2, it is characterized in that, the two ends of described first connecting rod (5) are fixedly connected with the first connecting hole (1-2) and the 3rd connecting hole (3-2) through the first via hole (2-3); The two ends of described second connecting rod (6) are fixedly connected with the second connecting hole (2-2) and the 4th connecting hole (4-2) through the second via hole (3-3); Described microscope base guide rail (7) is successively through the first pilot hole (1-1), the second pilot hole (2-1), the 3rd pilot hole (3-1), the 4th pilot hole (4-1).
6. half nested type plane cam focus adjusting mechanism as claimed in claim 1, it is characterized in that, described the first guide pin (10) is fixedly connected with the first microscope base (1) screw thread by the first tapped blind hole (1-4) on the first microscope base (1); Described the second guide pin (11) is fixedly connected with the second microscope base (2) screw thread by the second tapped blind hole (2-4) on the second microscope base (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210312946.2A CN102854603B (en) | 2012-08-29 | 2012-08-29 | Semi-nested planar cam focusing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210312946.2A CN102854603B (en) | 2012-08-29 | 2012-08-29 | Semi-nested planar cam focusing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102854603A CN102854603A (en) | 2013-01-02 |
| CN102854603B true CN102854603B (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210312946.2A Expired - Fee Related CN102854603B (en) | 2012-08-29 | 2012-08-29 | Semi-nested planar cam focusing mechanism |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015187184A1 (en) * | 2014-06-06 | 2015-12-10 | Newport Corporation | Optical rail system and method using quick-disconnect optical component mounts |
| CN107703598B (en) * | 2017-09-14 | 2020-09-01 | 中国科学院长春光学精密机械与物理研究所 | Zoom mechanical device for optical instrument |
| CN110879448A (en) * | 2019-11-04 | 2020-03-13 | 中国科学院西安光学精密机械研究所 | Continuous zooming device and assembling method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395145A (en) * | 2001-07-06 | 2003-02-05 | 雅客设计有限公司 | Control system of zoom lens of digital camera |
| CN101398525A (en) * | 2007-09-28 | 2009-04-01 | 富士胶片株式会社 | Lens device and imaging device |
| CN101918876A (en) * | 2007-10-24 | 2010-12-15 | 瑞士医药技术有限公司 | Zoom system for an optical stereo device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0996754A (en) * | 1995-09-29 | 1997-04-08 | Canon Inc | Zoom device and image reproducing device |
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2012
- 2012-08-29 CN CN201210312946.2A patent/CN102854603B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395145A (en) * | 2001-07-06 | 2003-02-05 | 雅客设计有限公司 | Control system of zoom lens of digital camera |
| CN101398525A (en) * | 2007-09-28 | 2009-04-01 | 富士胶片株式会社 | Lens device and imaging device |
| CN101918876A (en) * | 2007-10-24 | 2010-12-15 | 瑞士医药技术有限公司 | Zoom system for an optical stereo device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平9-96754A 1997.04.08 * |
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| CN102854603A (en) | 2013-01-02 |
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Granted publication date: 20141224 Termination date: 20160829 |