CN103293630B - Threaded focusing mechanism - Google Patents
Threaded focusing mechanism Download PDFInfo
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- CN103293630B CN103293630B CN201310217772.6A CN201310217772A CN103293630B CN 103293630 B CN103293630 B CN 103293630B CN 201310217772 A CN201310217772 A CN 201310217772A CN 103293630 B CN103293630 B CN 103293630B
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- guidepost
- base
- shell fragment
- focusing ring
- focusing
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Abstract
The invention discloses a threaded focusing mechanism. The threaded focusing mechanism comprises a lens base (1), guide columns (11) arranged on the lens base (1), a filtering base (2), an optical sensor (3), a sensor base (5), a focusing ring (6) and springs (4), and each spring (4) is sleeved on the corresponding guide column (11). The threaded focusing mechanism is stable in focusing, high in focusing levelness, good in picture quality, long in duration and free of external influences on the picture quality.
Description
Technical field
the present invention relates to optical focusing field, particularly relate to a kind of screw thread focus adjusting mechanism.
Background technology
In contemporary optics lens design, zoom lens is an indispensable part, in order to obtain better shooting effect and realize catching the Continuous Tracking of target, lens focus must adjust in real time, and the key realizing zoom is focus adjusting mechanism, focus adjusting mechanism assembly is mainly used in, when the distance of target or environment temperature change, adjusting current mirror position, ensures the clear picture of zoom lens and stable.
Existing focus adjusting mechanism is generally Cam focusing mechanism, but the flatness that cam focusing mechanism mode is focused is not high, and its gear drive generally also exists hysterisis error, affects focusing accuracy to a certain extent.
Existing focus adjusting mechanism comprises the parts such as lens base, filtering bench, optical sensor, sensor base, focusing ring, focusing ring is arranged on sensor base side, pedestal opposite side is provided with optical sensor, filtering bench, lens base successively, wherein lens base is provided with 4 guideposts, sensor base is provided with 4 corresponding with it through holes, during installation, lens base and sensor base link together in the mode of 4 guideposts through through hole, and 4 guidepost ends are fixed on two briquettings.It is generally focusing of tiltedly leading, and greatly, in use procedure, can produce larger moving displacement, and current focus adjusting mechanism material is mostly plastics, is easily out of shape, flatness, the precision of focusing are poor, cause image quality to be deteriorated for its focusing ring and sensor base gap.In addition, the deficiency that after it also also exists focusing, the sharpness of picture can reduce along with the increase of time, and be unable to bear vibrations, easily affect image quality.
Summary of the invention
The technical problem to be solved in the present invention is just: the technical matters existed for prior art, the invention provides a kind ofly to regulate more steadily, focus smooth higher, image quality is better, the duration is long and image quality is not subject to the screw thread focus adjusting mechanism of ectocine.
For achieving the above object, a kind of screw thread focus adjusting mechanism of the present invention, comprise lens base, the guidepost be arranged on lens base, filtering bench, optical sensor, sensor base, focusing ring, spring, above-mentioned spring housing is located on guidepost, and two ends are connected respectively in lens base and sensor base.
Further, the sensor pedestal is also provided with screw-mounting portion, is threaded connection between above-mentioned focusing ring and screw-mounting portion.
As a further improvement on the present invention, above-mentioned screw thread focus adjusting mechanism also comprises two briquettings be arranged in parallel, and above-mentioned guidepost quantity is 4, is separately positioned on four angles of lens base, the two ends of two briquettings are separately fixed at the end of four guideposts, prevent the landing that focuses.
Further, above-mentioned screw thread focus adjusting mechanism also comprises the shell fragment for stop, shell fragment is provided with the through hole passed for guidepost; Above-mentioned shell fragment is arranged on guidepost by through hole, between briquetting and focusing ring; The installation direction of shell fragment is consistent with briquetting.Shell fragment is mainly used in stop, and after Focussing is good, shell fragment starts stop, ensures that focal length does not change when inartificial adjustment.
Preferably, for reducing because of the impact of focus adjusting mechanism distortion on image quality, above-mentioned lens base, guidepost and sensor base adopt zinc alloy material to make.
Preferably, on above-mentioned focusing ring, the closely-pitched distance of screw thread is 0.5mm or 0.75mm.
Principle of the present invention is: during focusing, rotates focusing ring 6, drives sensor base 5 Compress Spring 4, and spring 4 pairs of sensor base 5 produce pressure simultaneously, and this pressure makes the gap of sensor base 5 and rotation focusing ring 6 reduce, and ensures high-flatness when it adjusts.In focussing process, shell fragment 7 has stopping function, once focus, shell fragment 7, with regard to stop, prevents from rotating focusing ring 6 movement automatically, avoids focal length to change.
The present invention has the following advantages:
1, focusing ring of the present invention is threaded and is arranged in sensor base, and adopts spring to eliminate gap between focusing ring and sensor base, and focusing flatness is good, precision is high, the image quality taken is clear;
2, focus adjusting mechanism main body of the present invention, comprises lens base, guidepost and sensor base etc. and adopts zinc alloy material to make, and because material hardness is comparatively large, focus adjusting mechanism is in use not yielding, effectively can reduce the impact on image quality;
3, the pitch of focusing ring of the present invention and screw-mounting portion is less, regulates more steady, even and if the translation to some extent that focuses in using, the displacement of its translation is also very little, therefore do not use for a long time or be given a shock affect time, change in displacement is also very small, and therefore image quality can not be affected.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is decomposition texture schematic diagram of the present invention.
Marginal data: 1, lens base; 11, guidepost; 2, filtering bench; 3, optical sensor; 4, spring; 5, sensor base; 51, screw-mounting portion; 6, focus; 7, shell fragment; 8, briquetting.
Embodiment
Below with reference to Figure of description and specific embodiment, the present invention is described in further details.
Embodiment 1
As shown in Figure 1, a kind of screw thread focus adjusting mechanism of the present invention, comprise lens base 1, the guidepost 11 be arranged on lens base 1, filtering bench 2, optical sensor 3, sensor base 5, focusing ring 6, spring 4, above-mentioned spring 4 is set on guidepost 11, spring 4 is wrapped on the shaft of guidepost 11, and two ends are connected respectively in lens base and sensor base; The sensor pedestal 5 is also provided with screw-mounting portion 51, is threaded connection between above-mentioned focusing ring 6 and screw-mounting portion 51.The focusing ring of the present embodiment is threaded and is arranged in sensor base, and adopts spring to eliminate gap between focusing ring and sensor base, and focusing flatness is good, precision is high, the image quality taken is clear.
Embodiment 2
In the present embodiment, screw thread focus adjusting mechanism also comprises shell fragment 7 and two briquettings be arranged in parallel 8 on the basis of embodiment 1, above-mentioned guidepost 11 quantity is 4, be separately positioned on four angles of lens base 1, the two ends (i.e. 4 ends) of two briquettings 8 are separately fixed at the end (one end be not connected with lens base 1) of four guideposts 11, prevent the landing that focuses.
Above-mentioned shell fragment 7 is provided with the through hole passed through for guidepost 11; Above-mentioned shell fragment 7 is arranged on guidepost 11 by through hole, and between briquetting 8 and focusing ring 6, namely guidepost 11 is connected on slide block 8 through the through hole on shell fragment 7; The installation direction of above-mentioned shell fragment 7 is consistent with briquetting 8.Shell fragment 7 is mainly used in stop, and after Focussing is good, shell fragment 7 starts stop, ensures not change focal length when inartificial adjustment.
Above-mentioned lens base 1, guidepost 11 and sensor base 5 adopt zinc alloy material to make, and zinc alloy material is comparatively large due to its hardness, not yielding in the focus adjusting mechanism use of making, and effectively can reduce the impact on image quality.
On above-mentioned focusing ring 6, the closely-pitched distance of screw thread is 0.5mm or 0.75mm.Because pitch is less, regulate more steady, even and if focusing ring 6 translations to some extent in using, the displacement of its translation is also very little, therefore do not use for a long time or be given a shock affect time, change in displacement is also very small, and therefore image quality can not be affected.
Below be only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.
Claims (3)
1. a screw thread focus adjusting mechanism, comprise lens base (1), the guidepost (11) be arranged on lens base (1), filtering bench (2), optical sensor (3), sensor base (5), focusing ring (6), also comprise spring (4), described spring (4) is set on guidepost (11); Described sensor base (5) is also provided with screw-mounting portion (51), is threaded connection between described focusing ring (6) and screw-mounting portion (51); It is characterized in that, also comprise the shell fragment (7) for stop and two briquettings be arranged in parallel (8), described guidepost (11) quantity is 4, is separately positioned on four angles of lens base (1), and the two ends of two briquettings (8) are separately fixed at the end of four guideposts (11); Described shell fragment (7) is provided with the through hole passed for guidepost (11); Described shell fragment (7) is arranged on guidepost (11) by through hole, is positioned between briquetting (8) and focusing ring (6); The installation direction of described shell fragment (7) is consistent with briquetting (8).
2. a kind of screw thread focus adjusting mechanism according to claim 1, is characterized in that, described lens base (1), guidepost (11) and sensor base (5) adopt zinc alloy material to make.
3. a kind of screw thread focus adjusting mechanism according to claim 1 and 2, is characterized in that, the closely-pitched distance of the upper screw thread of described focusing ring (6) is 0.5mm or 0.75mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310217772.6A CN103293630B (en) | 2013-06-04 | 2013-06-04 | Threaded focusing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310217772.6A CN103293630B (en) | 2013-06-04 | 2013-06-04 | Threaded focusing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103293630A CN103293630A (en) | 2013-09-11 |
| CN103293630B true CN103293630B (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310217772.6A Active CN103293630B (en) | 2013-06-04 | 2013-06-04 | Threaded focusing mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN103293630B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526775A (en) * | 2016-12-02 | 2017-03-22 | 歌尔科技有限公司 | Coaxial lens mount module and panoramic camera |
| CN107748425A (en) * | 2017-11-30 | 2018-03-02 | 江苏康尚生物医疗科技有限公司 | A kind of screw thread focus control |
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| JP3778888B2 (en) * | 2002-10-29 | 2006-05-24 | 三洋電機株式会社 | Flange back adjustment mechanism |
| CN1955779A (en) * | 2005-10-25 | 2007-05-02 | 华硕电脑股份有限公司 | Camera module of regulating relative distance between lens module and sensing unit |
| CN101620304A (en) * | 2008-06-30 | 2010-01-06 | 鸿富锦精密工业（深圳）有限公司 | Image capture module |
| KR20100020216A (en) * | 2008-08-12 | 2010-02-22 | 삼성디지털이미징 주식회사 | Barrel of optical system |
| CN102340622A (en) * | 2010-07-19 | 2012-02-01 | 鸿富锦精密工业（深圳）有限公司 | Image acquisition module |
| CN102572248A (en) * | 2012-02-08 | 2012-07-11 | 北京经纬恒润科技有限公司 | Camera capable of realizing focusing well |
| CN202677036U (en) * | 2012-06-19 | 2013-01-16 | 深圳市同为数码科技股份有限公司 | Camera rear focusing mechanism |
| CN203275746U (en) * | 2013-06-04 | 2013-11-06 | 四川艾普视达数码科技有限公司 | Helical focusing camera |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8172412B2 (en) * | 2009-10-31 | 2012-05-08 | Lenox Laser Corporation | Adjustable optical mount |
-
2013
- 2013-06-04 CN CN201310217772.6A patent/CN103293630B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3778888B2 (en) * | 2002-10-29 | 2006-05-24 | 三洋電機株式会社 | Flange back adjustment mechanism |
| CN1955779A (en) * | 2005-10-25 | 2007-05-02 | 华硕电脑股份有限公司 | Camera module of regulating relative distance between lens module and sensing unit |
| CN101620304A (en) * | 2008-06-30 | 2010-01-06 | 鸿富锦精密工业（深圳）有限公司 | Image capture module |
| KR20100020216A (en) * | 2008-08-12 | 2010-02-22 | 삼성디지털이미징 주식회사 | Barrel of optical system |
| CN102340622A (en) * | 2010-07-19 | 2012-02-01 | 鸿富锦精密工业（深圳）有限公司 | Image acquisition module |
| CN102572248A (en) * | 2012-02-08 | 2012-07-11 | 北京经纬恒润科技有限公司 | Camera capable of realizing focusing well |
| CN202677036U (en) * | 2012-06-19 | 2013-01-16 | 深圳市同为数码科技股份有限公司 | Camera rear focusing mechanism |
| CN203275746U (en) * | 2013-06-04 | 2013-11-06 | 四川艾普视达数码科技有限公司 | Helical focusing camera |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103293630A (en) | 2013-09-11 |
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Effective date of registration: 20170818 Address after: 518000, Shenzhen, Guangdong District, Longgang District, Bantian street, 369 dragon road, East China Sea Wang Industrial Zone B building on the third floor Patentee after: Shenzhen Naijie Electronic Technology Co Ltd Address before: 610000 No. two, No. 1 South Road, Chengdu hi tech Zone, Sichuan, China Patentee before: Sichuan Aipstar Digital Technology Co., Ltd. |