CN201397418Y - Periscopic high-resolution varifocal optical system with small volume and low cost - Google Patents
Periscopic high-resolution varifocal optical system with small volume and low cost Download PDFInfo
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- CN201397418Y CN201397418Y CN2009200522858U CN200920052285U CN201397418Y CN 201397418 Y CN201397418 Y CN 201397418Y CN 2009200522858 U CN2009200522858 U CN 2009200522858U CN 200920052285 U CN200920052285 U CN 200920052285U CN 201397418 Y CN201397418 Y CN 201397418Y
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- periscopic
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Abstract
The utility model discloses a periscopic high-resolution varifocal optical system with small volume and low cost, more particularly relates to an optical system applied to camera, mobile phone and monitoring system. The system comprises a first lens cluster, a second lens cluster, a third lens cluster, a fourth lens cluster and a sensitive chip between which the spacing can be adjusted, wherein, adiaphragm is arranged in front of the third lens cluster and a lens with a changeable optical axis is arranged between a first lens and a second lens of the first lens cluster; the combined focal length of the first lens cluster, the second lens cluster, the third lens cluster and the fourth lens cluster are respectively positive, negative, positive and positive. The periscopic high-resolution varifocal optical system has the characteristics of small volume, changeable optical axis, low cost and the like.
Description
[technical field]
The utility model relates to a kind of optical lens, relates in particular to a kind of periscopic high-resolution zoom optical lens that volume is little, cost is low that is applied to camera, mobile phone, supervisory system.
[background technology]
Medium-sized or shortcoming that the miniature zoom lens ubiquity is such that photograph at present, mobile phone, security protection are used: physical dimension is big, cost is higher, resolution is lower.This has significant limitation in the use, can not satisfy being easy to carry of consumer, conveniently hides, cheap, and needs such as imaging is clear.And can not change optical axis in addition, do not reach the purpose of diving and hoping.
[utility model content]
The utility model purpose be overcome deficiency of the prior art and provide volume little, can change optical axis, periscopic high-resolution zoom optical system that cost is low.
In order to solve the technical matters of above-mentioned existence, the utility model adopts following technical proposal:
The periscopic high-resolution zoom optical system that a kind of volume is little, cost is low, it is characterized in that including adjacent between first lens group, second lens group, the 3rd lens group and the 4th lens group and the sensitive chip of spacing mutually, be provided with diaphragm in described the 3rd lens group the place ahead, between first lens of described first lens group and second lens, be provided with the prism of changeable optical axis.
The periscopic high-resolution zoom optical system that aforesaid a kind of volume is little, cost is low is characterized in that described prism is a prism.
The periscopic high-resolution zoom optical system that aforesaid a kind of volume is little, cost is low, the combined focal length that it is characterized in that described first lens group is for just, the combined focal length of second lens group is for negative, and the combined focal length of the 3rd lens group and the 4th lens group is all for just.
The periscopic high-resolution zoom optical system that aforesaid a kind of volume is little, cost is low, the system element characteristic that it is characterized in that described first lens group, second lens group satisfies following formula: f1＞-f2, wherein, f1 is the combined focal length of first lens group, and f2 is the combined focal length of second lens group.
The utility model compared with prior art has following advantage:
1, existing zoom lens also needs focusing/zooming lens or zoom lens group after regulating zoom, compensation two lens groups, could become sharply defined image; Zoom lens of the present utility model only need be regulated zoom second lens group and compensation the 4th lens group two lens groups when zoom, just can become sharply defined image.So not only convenient the adjusting also saved the adjusting time greatly, reaches quick change times purpose, also removed the required labyrinth of focusing simultaneously, saved cost, reduced volume and weight, improved reliability of products.
2, zoom lens of the present utility model is provided with a prism in the first lens back, has changed optical axis direction, and reaching dives hopes purpose.3, the utility model is located at the front of the 3rd lens group to diaphragm, in other conditions under similar circumstances, has greatly dwindled the volume of first lens group, and this is to reducing machine volume and weight, and contribution greatly.4, existing high magnification, fast zoom lens are subjected to mechanics limit in the zoom process, and the zoom blind spot is often arranged, and promptly resolution is relatively poor near a certain focal length, and imaging is unintelligible; Zoom lens of the present utility model does not have the zoom blind spot, all can become sharply defined image in whole zoom process.
5, existing high magnification, fast zoom lens, closely imaging is unintelligible; Zoom lens of the present utility model closely imaging is clear, can also become sharply defined image when the 10mm low coverage.
6, the design has realized 3 times of optics ZOOM (zoom), and adopt AF (focusing automatically) technology, has thoroughly like this realized that an optical system can be simultaneously becomes to take clear photograph to the object of different distance.
[description of drawings]
Fig. 1 is the utility model diagrammatic cross-section.
[embodiment]
Below in conjunction with accompanying drawing the utility model is described in detail:
As shown in Figure 1, the periscopic high-resolution zoom optical system that a kind of volume is little, cost is low, include adjacent between first lens group 1, second lens group 2, the 3rd lens group 3 and the 4th lens group 4 and the sensitive chip 5 of spacing mutually.Because between first lens group 1 and second lens group 2 is between variable, second lens group 2 and the 3rd lens group 3 to be between variable, the 3rd lens group 3 and the 4th lens group 4 to be between variable, the 4th lens group 4 and the sensitive chip 5 to be variable at interval at interval at interval at interval, so by changing these four variable airspaces, can reach the purpose of the focal length change that makes camera lens.About how realizing between first lens group 1, second lens group 2, the 3rd lens group 3 and the 4th lens group 4 and the sensitive chip 5 problem of spacing mutually, I submit a related application on November 20th, 2007, the inside describes the problem of utilizing mechanism to realize spacing in detail, its patent No. is ZL200720193328.5, and name is called: a kind of high magnification, small size, the quick varifocal optical system doubly that becomes.
Between first lens 11 of described first lens group 1 and second lens 12, be provided with the prism 6 of changeable optical axis, this prism 6 is a prism in the present embodiment, light passes through prism 6 from first lens 11 through later like this, light is refracted to second lens 12 after reaching the reflecting surface of prism 6 again, make the angle of light obtain changing, realize changing the purpose of optical axis.
Be provided with diaphragm 12 at described the 3rd lens group 3, at first because diaphragm 12 is located in the middle of the total system of the 3rd lens group 3 by the back (before the direction that light enters is, the position of sensitive chip be the back) part, so both be beneficial to the bore that dwindles first lens group, be beneficial to the bore of control the 4th lens group 4 again; Next is that described four group 4 is compensation group, is again the focusing group, when it moves, when becoming doubly compensation, has also adjusted back Jiao, and this has just removed the complex mechanism of establishing for focusing;
The combined focal length of described first lens group 1 reaches the purpose that converges light for just.The combined focal length of second lens group 2 is for negative, and first lens, 6 focal lengths of second lens group 2 are also for negative, and cluster makes the focal length of total system change in moving process, reaches to become purpose doubly, is called again to become doubly group.
At first described the 4th lens group 4 whole focal length converge to image planes to the light through three lens groups in front for just, and it is the compensation group, are again the focusing groups.In times process of change, become when doubly the group moves, the 4th lens group 4 moves simultaneously, when a change times group moves to the precalculated position, that the 4th lens group 4 also moves to is pre-set, make that image planes are clear substantially also may to arrive position the most clearly, by focusing fine setting automatically, make image planes the most clear then; Be equivalent to save this step of focusing, reached the purpose of the time that shortens.Have the clear aperture of two hordes all less again, become doubly and in the focusing process displacement all shorter, will spend the less time during change times like this.By above-mentioned two kinds of approach arrangements, making it become doubly can realize fast.
System element characteristic at described first lens group 1, second lens group 2, the 3rd lens group 3, the 4th lens group 4 satisfies following formula: f1＞-f2.Wherein, f1 is the combined focal length of first lens group 1, and f2 is the combined focal length of second lens group 2, and f3 is the combined focal length of the 3rd lens group 3, and f4 is the combined focal length of the 4th lens group 4.By regulating the ratio between f1, f2, f3, the f4, the numerical values recited of adjusting f1, use aspheric surface and increasing and decreasing each group lens number, can design from little multiplying power to big multiplying power to the zoom lens of the various different multiplying of super large multiplying power, different size.
It is burnt that described the 4th lens group is directly regulated the back, thus can directly be transferred to best image planes position, and adopt high-precision step motor, this is with regard to the thorough closely problem of the not cleer and peaceful focusing blind spot of imaging of conventional lenses that solved; Product precision and product reliability have also just been improved so simultaneously.
Lift the actual design case of one 3 times of zooms below
Serial number type R value (1/C) thickness optical material diameter
1-a standard 18.21 1.05 ZF6 φ 10
1-b standard 6.46 2.45 Air φ 10
The infinitely great 8.5 K9 φ 8 of 2-a standard
The infinitely great 0.1 Air φ 8 of 2-b standard
3-a standard 19.235 1.95 Lak3 φ 7
3-b standard-19.235 0.7 Air φ 7
4-a standard-16.48 2.85 Zf52 φ 6
4-b standard 10.536 0.65 Air φ 6
5-a standard-9.356 0.6 Zk7 φ 5.5
5-b, 6-a standard 9.325 1.52 Zf7 φ 5.5
6-b standard-125.32 6.05 Air φ 5.5
The infinitely great 1.5 Air φ 10 in 12 smooth hurdles
7-a standard 12.32 1.5 Laf4 φ 4.2
7-b standard-33.45 0.15 Air φ 4.2
8-a standard-10.56 1.15 zf7 φ 4.2
8-b standard 33.45 3.5 Air φ 4.2
9-a standard 32.56 1.8 Lak7 φ 5
9-b, 10-a standard-8.98 0.6 Zf6 φ 5
10-b standard 42.56 1.5 Air φ 5
11-a standard 15.98 1.5 Zk7 φ 5
11-b standard-15.98 1.5 Air φ 5
The image planes infinity
Group's focusing moving range:
1,2 group is 0.7mm-5.3mm at interval;
2,3 groups are 2.95mm-7.55mm at interval;
3,4 groups are 1.2mm-3.5mm at interval;
4 groups and image planes are 1.5mm-3.8mm at interval.
Claims (4)
1, the periscopic high-resolution zoom optical system that a kind of volume is little, cost is low, it is characterized in that including adjacent between first lens group (1), second lens group (2), the 3rd lens group (3) and the 4th lens group (4) and the sensitive chip (5) of spacing mutually, be provided with diaphragm (12) in described the 3rd lens group (3) the place ahead, between first lens (11) of described first lens group (1) and second lens (12), be provided with the prism (6) of changeable optical axis.
2, the periscopic high-resolution zoom optical system that a kind of volume according to claim 1 is little, cost is low is characterized in that described prism (6) is a prism.
3, the periscopic high-resolution zoom optical system that a kind of volume according to claim 2 is little, cost is low, the combined focal length that it is characterized in that described first lens group (1) is for just, the combined focal length of second lens group (2) is for negative, and the combined focal length of the 3rd lens group (3) and the 4th lens group (4) is all for just.
4, the periscopic high-resolution zoom optical system that a kind of volume according to claim 2 is little, cost is low, the system element characteristic that it is characterized in that described first lens group (1), second lens group (2) satisfies following formula: f1＞-f2, wherein, f1 is the combined focal length of first lens group (1), and f2 is the combined focal length of second lens group (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200522858U CN201397418Y (en) | 2009-03-04 | 2009-03-04 | Periscopic high-resolution varifocal optical system with small volume and low cost |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200522858U CN201397418Y (en) | 2009-03-04 | 2009-03-04 | Periscopic high-resolution varifocal optical system with small volume and low cost |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201397418Y true CN201397418Y (en) | 2010-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200522858U Expired - Lifetime CN201397418Y (en) | 2009-03-04 | 2009-03-04 | Periscopic high-resolution varifocal optical system with small volume and low cost |
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| CN (1) | CN201397418Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252278A (en) * | 2011-07-04 | 2011-11-23 | 山东神戎电子股份有限公司 | Zoom laser illuminator |
| CN103336352A (en) * | 2013-07-10 | 2013-10-02 | 中山联合光电科技有限公司 | Small-size, low-cost, large-diaphragm, small-distortion and high-definition optical zoom system |
| CN103458165A (en) * | 2013-08-06 | 2013-12-18 | 四川长虹电器股份有限公司 | Handheld device based on periscope type optical system |
| TWI456286B (en) * | 2011-04-19 | 2014-10-11 | Ability Entpr Co Ltd | Zoom lens |
| TWI585452B (en) * | 2015-07-02 | 2017-06-01 | 先進光電科技股份有限公司 | Optical image capturing system |
| TWI585453B (en) * | 2015-07-13 | 2017-06-01 | 先進光電科技股份有限公司 | Optical image capturing system |
| WO2021233299A1 (en) * | 2020-05-22 | 2021-11-25 | 维沃移动通信有限公司 | Camera structure and electronic device |
-
2009
- 2009-03-04 CN CN2009200522858U patent/CN201397418Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI456286B (en) * | 2011-04-19 | 2014-10-11 | Ability Entpr Co Ltd | Zoom lens |
| US9645368B2 (en) | 2011-04-19 | 2017-05-09 | Ability Enterprise Co., Ltd. | Zoom lens |
| CN102252278A (en) * | 2011-07-04 | 2011-11-23 | 山东神戎电子股份有限公司 | Zoom laser illuminator |
| CN102252278B (en) * | 2011-07-04 | 2012-09-05 | 山东神戎电子股份有限公司 | Zoom laser illuminator |
| CN103336352A (en) * | 2013-07-10 | 2013-10-02 | 中山联合光电科技有限公司 | Small-size, low-cost, large-diaphragm, small-distortion and high-definition optical zoom system |
| CN103458165A (en) * | 2013-08-06 | 2013-12-18 | 四川长虹电器股份有限公司 | Handheld device based on periscope type optical system |
| TWI585452B (en) * | 2015-07-02 | 2017-06-01 | 先進光電科技股份有限公司 | Optical image capturing system |
| TWI585453B (en) * | 2015-07-13 | 2017-06-01 | 先進光電科技股份有限公司 | Optical image capturing system |
| WO2021233299A1 (en) * | 2020-05-22 | 2021-11-25 | 维沃移动通信有限公司 | Camera structure and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 528400 Zhongshan Torch Development Zone, Guangdong Road, No. 10 Patentee after: Zhong Shan joint opto-electronic Science and Technology Co., Ltd. Address before: 528400 Zhongshan Torch Development Zone, Guangdong Patentee before: Union Optech (Zhongshan) Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100203 |
|
| CX01 | Expiry of patent term |