CN100478731C - Periscopic zoom lens - Google Patents
Periscopic zoom lens Download PDFInfo
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- CN100478731C CN100478731C CNB2006101317423A CN200610131742A CN100478731C CN 100478731 C CN100478731 C CN 100478731C CN B2006101317423 A CNB2006101317423 A CN B2006101317423A CN 200610131742 A CN200610131742 A CN 200610131742A CN 100478731 C CN100478731 C CN 100478731C
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Abstract
The present invention relates to a periscopic type zoom lens from object side to imaging side; the invention comprises a first lens set with positive refraction power, a second lens set with negative refraction power, a third lens set with positive refraction power, a fourth lens set with positive refraction power, a fifth lens set, a sixth lens set with negative refraction power and a seventh lens set with positive refraction power in turn, wherein, the first, the third, the fifth and the seventh lens sets are fixed. When the zoom lens zooms from the wide-angle end to the far end, the second and the fourth lens sets close up the third lens set, while the sixth lens set closes up the seventh lens set.
Description
Technical field
The present invention is about a kind of zoom lens, especially a kind of slim periscopic zoom lens, characteristics such as have the multiplying power of change height, the on time is short, imaging performance is good.
Background technology
For carrying out shooting operation more easily, many main flow digital cameras all adopt Zoom optic lens.Because Zoom optic lens can change the focal length of shooting effectively, but can as digital zoom, not reduce the sharpness of picture.
U.S. patent application case US2005/0099700A1 has disclosed a kind of zoom lens of compact, its have refracting power (Refraction Power) be respectively positive and negative, just, positive four group lens combination.When this zoom lens from the wide-angle side position when remote location carries out zoom, the first and the 3rd lens combination wherein maintains static, second lens combination is then to the imaging side shifting.Though the structure of this zoom lens is compact, zoom ratio is not high.
Traditional high magnification Zoom optic lens group generally all needs long length, for moderately changing focal length.Heavy trunk formula camera lens is a kind of telescopic camera lens, and its camera lens is extended to the machine outside, and when zoom, its camera lens can telescopic moving.Most in the market digital camera all is to use heavy trunk formula camera lens.For reaching thin type structure, heavy trunk formula lens group generally is to adopt the negative refracting power of a group U, 2 groups of positive refracting powers of U, 3 groups of positive refracting powers of U, carries out the zoom operation in a group mode of keeping out of the way wherein again.Under this framework, for reaching high zoom, the distance of its zoom will certainly be bigger, therefore still can't reach purpose of thinness effectively.
The periscopic camera lens then is another kind of telescopic camera lens, and it need not reach the camera body outside, normally is applied on the card camera.The principle of periscopic camera lens is very simple, and promptly its light path is not a straight line, enters in the camera body but reflect by the reflective of mirror.Its eyeglass can move in fuselage interior when zoom, focusing, but camera lens can not stretch out outside the fuselage.Therefore, can make that not only the size of digital camera is smaller and more exquisite, thereby be reduced small product size; Simultaneously because camera lens needn't stretch out outside the fuselage, so also can len injury-free.
The periscopic camera lens is preferable scheme on high zoom that solves conflict mutually and slimming demand, so the present invention promptly is to provide a kind of novel periscopic camera lens.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of periscopic zoom lens is provided, it is a kind of variable-power optical system of high magnification of slimming, has the on time weak point and the good characteristics of imaging performance.
For achieving the above object, the present invention's periscopic zoom lens, includes to the imaging side successively from object side: have positive refracting power border first lens combination, have second lens combination of negative refracting power, the 3rd lens combination with positive refracting power, the 4th lens combination with positive refracting power, the 5th lens combination, have the 6th lens combination of negative refracting power and have the 7th lens combination of positive refracting power.Wherein, first and third, five and seven lens combination are for fixedly installing.When this zoom lens from wide-angle side when far-end carries out zoom, the second and the 4th lens combination is close to the 3rd lens combination, the 6th lens combination is then close to the 7th lens combination.
First lens combination comprises the reflection subassembly of one piece of flexion optical axis.
If the focal length of second lens combination is made as GU2f, the focal length of the 6th lens combination is made as GU6f, and then its grade satisfies formula: 0.1＜| GU2f/GU6f|＜0.5.
First lens combination comprises two pieces of lens and this reflection subassembly, and wherein this reflection subassembly is arranged between these two pieces of lens, and wherein has two non-spherical surfaces away from the lens of object side.
Second lens combination comprises three pieces of lens.The 3rd lens combination comprises one piece of lens, and these lens have two non-spherical surfaces.
The 4th lens combination comprises two pieces of lens, wherein has a non-spherical surface from the nearer lens of object side.In the first embodiment of the present invention, this aspheric surface is second surface of the 4th lens combination from the past imaging side direction of object side, and the 5th lens combination comprises one piece of lens, and the 6th lens combination has two pieces of lens, and the 7th lens combination has one piece of lens.
And in the second embodiment of the present invention, this aspheric surface is the 4th lens combination first surface from the past imaging side direction of object side, and the 5th lens combination comprises one piece of lens, and these lens have two non-spherical surfaces.The 6th lens combination has two pieces of lens; The 7th lens combination then has one piece of lens.
The present invention's periscopic zoom lens has the multiple lens group removable in it, make that the amount of movement of each lens combination is less, thereby the volume of whole zoom lens is reduced.Simultaneously, the present invention's design can guarantee that also each bifocal position all can obtain best imaging performance.Therefore, the present invention's periscopic zoom lens has characteristics such as high zoom, on time weak point and imaging performance are good.
Description of drawings
Fig. 1 is the structural representation of periscopic zoom lens of the present invention.
Fig. 2 A is the structural representation of periscopic zoom lens of the present invention when the wide-angle side position.
Fig. 2 B is the structural representation of periscopic zoom lens of the present invention when the end of centre position.
Fig. 2 C is the structural representation of periscopic zoom lens of the present invention when remote location.
Fig. 3 A is the intelligent shape aberration diagram of periscopic zoom lens of the present invention when the wide-angle side position among first embodiment.
Fig. 3 B is the intelligent shape aberration diagram of periscopic zoom lens of the present invention when the centre position among first embodiment.
Fig. 3 C is the intelligent shape aberration diagram of periscopic zoom lens of the present invention when remote location among first embodiment.
Fig. 4 A is the curvature of field and the distortion figure of periscopic zoom lens of the present invention when the wide-angle side position among first embodiment.
Fig. 4 B is the curvature of field and the distortion figure of periscopic zoom lens of the present invention when the centre position among first embodiment.
Fig. 4 C is the curvature of field and the distortion figure of periscopic zoom lens of the present invention when remote location among first embodiment.
Fig. 5 A is the intelligent shape aberration diagram of periscopic zoom lens of the present invention when the wide-angle side position among second embodiment.
Fig. 5 B is the intelligent shape aberration diagram of periscopic zoom lens of the present invention when the centre position among second embodiment.
Fig. 5 C is the intelligent shape aberration diagram of periscopic zoom lens of the present invention when remote location among second embodiment.
Fig. 6 A is the curvature of field and the distortion figure of periscopic zoom lens of the present invention when the wide-angle side position among second embodiment.
Fig. 6 B is the curvature of field and the distortion figure of periscopic zoom lens of the present invention when the centre position among second embodiment.
Fig. 6 C is the curvature of field and the distortion figure of periscopic zoom lens of the present invention when remote location among second embodiment.
Embodiment
Now, periscopic zoom lens of the present invention is described in further detail in conjunction with Figure of description.
See also shown in Figure 1, to the imaging side, the present invention's periscopic zoom lens comprises successively from object side: have positive refracting power the first lens combination GU1, the second lens combination GU2 with negative refracting power, the 3rd lens combination GU3, the 4th lens combination GU4 with positive refracting power, the 5th lens combination GU5 with positive refracting power, have the 6th lens combination GU6 of negative refracting power and have the 7th lens combination GU7 of positive refracting power.
First and third, five fixedly install with seven lens combination GU1, GU3, GU5, relative its flexion optical axis of GU7 (Refraction Axial), the second, the 4th and the 6th lens combination then can move along its common flexion optical axis, to realize the zoom purpose.
The first lens combination GU1 comprises the reflection subassembly G2 of one piece of flexion optical axis.The focal length of the second lens combination GU2 (Focal Distance) is GU2f, and the focal length of the 6th lens combination GU6 is GU6f, and the two satisfies formula: 0.1＜| GU2f/GU6f|＜0.5.
The first lens combination GU1 comprises two pieces of lens G1, G3 and this reflection subassembly G2, and wherein this reflection subassembly G2 is located between these two pieces of lens G1, G3, and wherein should have two non-spherical surfaces away from the lens G3 of object side.The second lens combination GU2 comprises three pieces of lens G4, G5, G6.The 3rd lens combination GU3 comprises one piece of lens G7, and these lens G7 has two non-spherical surfaces.
The 4th lens combination GU4 comprises two pieces of lens G8, G9, and should have a non-spherical surface from the nearer lens G8 of object side.In the first embodiment of the present invention, the aspheric surface of these lens G8 is second surface of the 4th lens combination GU4 from the past imaging side direction of object side.The 5th lens combination GU5 comprises one piece of lens G10; The 6th lens combination has two pieces of lens G11, G12; And the 7th lens combination has one piece of lens G13.
Please consult Fig. 2 A～2C simultaneously, when the zoom lens that is respectively the present invention is in wide-angle side (Wide-angle End), centre and far-end (Telescope End) position, the structural representation of relative position between its first to the 7th lens combination GU1～GU7.When the present invention's zoom lens from wide-angle side when far-end carries out zoom, the second and the 4th lens combination GU2, GU4 are close to the 3rd lens combination GU3, the 6th lens combination GU6 is then close to the 7th lens combination GU7.
Table one is depicted as the related parameter that has of each lens of the present invention among first embodiment, and wherein Nd represents refractive index, and Vd represents the Abbe coefficient.Table two is depicted as among this embodiment, the tapering coefficient of five non-spherical surface correspondences and the value of asphericity coefficient.Table three is depicted as among this embodiment, when the present invention's zoom lens is in wide-angle side position, centre position and remote location respectively, the value of the space D between the spacing B between the spacing A between first and second lens combination, the second and the 3rd lens combination, the spacing C between third and fourth lens combination and the 6th and the 7th lens combination.
Table one:
| The surface | Lens | Radius-of-curvature | Between between lens combination every | Nd | Vd |
| 1 | G1 | 32.20 | 0.62 | 1.923 | 20.9 |
| 2 | 7.65 | 1.34 | |||
| 3 | G2 | Infinitely | 6.8 | 1.835 | 42.7 |
| 4 | Infinitely | 0.3 | |||
| 5 | G3 | 12.08 | 2.15 | 1.739 | 48.8 |
| 6 | -13.74 | A | |||
| 7 | G4 | 72.68 | 0.5 | 1.816 | 46.6 |
| 8 | 6.79 | 0.92 | |||
| 9 | G5 | -10.00 | 0.45 | 1.788 | 47.4 |
| 10 | G6 | 7.69 | 0.93 | 1.923 | 20.9 |
| 11 | 31.90 | B | |||
| 12 | G7 | 11.30 | 1.42 | 1.802 | 40.7 |
| 13 | -62.73 | 0.95 | |||
| 14 | SIBORI | Infinitely | C | ||
| 16 | G8 | 12.6978 | 2.4 | 1.589 | 61.2 |
| 17 | G9 | -5.504 | 0.58 | 1.805 | 25.4 |
| 19 | Infinitely | 0.5 | |||
| 20 | G10 | 80 | 0.5 | 1.516 | 64.1 |
| 21 | 120 | 0.55 | |||
| 22 | G11 | 54.378 | 0.5 | 1.749 | 35.3 |
| 23 | G12 | 4.86 | 2.31 | 1.439 | 95.0 |
| 24 | 64.865 | D | |||
| 25 | Infinitely | 6.32 | |||
| 26 | G13 | 40 | 1.18 | 1.541 | 47.2 |
| 27 | -186.473 | 1.07 | |||
| 28 | LPF | Infinitely | 0.8 | 1.516 | 64.1 |
| 29 | Infinitely | 2.15 | |||
| IMA | Infinitely |
Table two:
Table three:
| No. | Wide-angle side | The centre position | Far-end |
| A | 0.50 | 3.49 | 5.66 |
| B | 5.58 | 2.59 | 0.42 |
| C | 6.36 | 4.42 | 2.08 |
| D | 1.03 | 0.43 | 0.00 |
Fig. 3 A～3C and Fig. 4 A～4C are depicted as intelligent shape aberration diagram and the curvature of field and the distortion figure of periscopic zoom lens of the present invention in first embodiment.
Then be intelligent shape aberration diagram and the curvature of field and the distortion figure of zoom lens of the present invention in second embodiment shown in Fig. 5 A～5C and Fig. 6 A～6C.
In the second embodiment of the present invention, the aspheric surface of the lens G8 of the 4th lens combination GU4 is the 4th lens combination GU4 first surface from the past imaging side direction of object side.Simultaneously, the 5th lens combination GU5 comprises lens G10, and these lens L10 also has two non-spherical surfaces.The 6th lens combination GU6 has two pieces of lens G11, G12; The 7th lens combination GU7 then has lens G13.
Table four is depicted as the related parameter that has of each lens of the present invention among second embodiment, and wherein Nd represents refractive index, and Vd represents the Abbe coefficient.Table five is depicted as among this embodiment, the tapering coefficient of five non-spherical surface correspondences and the value of asphericity coefficient.Table six is depicted as among this embodiment, when the present invention's zoom lens is in wide-angle side position, centre position and remote location respectively, the value of the space D between the spacing B between the spacing A between first and second lens combination, the second and the 3rd lens combination, the spacing C between third and fourth lens combination and the 6th and the 7th lens combination.
Table four:
| The surface | Lens | Radius-of-curvature | Between between lens combination every | Nd | Vd |
| OBJ | Infinitely | Infinitely | |||
| 1 | G1 | 32.20 | 0.62 | 1.923 | 20.9 |
| 2 | 7.65 | 1.34 | |||
| 3 | G2 | Infinitely | 6.80 | 1.835 | 42.7 |
| 4 | Infinitely | 0.30 | |||
| 5 | G3 | 12.08 | 2.15 | 1.739 | 48.8 |
| 6 | -13.74 | A | |||
| 7 | G4 | 72.68 | 0.50 | 1.816 | 46.6 |
| 8 | 6.79 | 0.92 | |||
| 9 | G5 | -10.00 | 0.45 | 1.788 | 47.4 |
| 10 | G6 | 7.69 | 0.93 | 1.923 | 20.9 |
| 11 | 31.90 | B | |||
| 12 | G7 | 11.30 | 1.42 | 1.802 | 40.7 |
| 13 | -62.73 | 0.95 | |||
| 14 | SIBORI | Infinitely | C | ||
| 15 | G8 | 12.70 | 2.40 | 1.589 | 61.2 |
| 16 | G9 | -5.50 | 0.58 | 1.805 | 25.4 |
| 17 | -9.86 | D | |||
| 18 | G10 | 100.00 | 0.50 | 1.522 | 52.2 |
| 19 | 70.00 | E | |||
| 20 | G11 | 51.63 | 0.50 | 1.806 | 33.3 |
| 21 | G12 | 4.88 | 2.31 | 1.487 | 70.2 |
| 22 | 66.75 | F | |||
| 23 | Infinitely | 6.32 | |||
| 24 | G13 | 36.24 | 1.18 | 1.517 | 52.1 |
| 25 | -37.20 | 1.07 | |||
| 26 | LPF | Infinitely | 0.80 | 1.516 | 64.1 |
| 27 | Infinitely | 2.97 | |||
| IMA | Infinitely |
Table five:
Table six:
| No. | Wide-angle side | The centre position | Far-end |
| A | 0.50 | 3.49 | 5.66 |
| B | 5.58 | 2.59 | 0.42 |
| C | 6.37 | 4.45 | 2.16 |
| D | 0.31 | 2.23 | 4.52 |
| E | 0.74 | 1.34 | 1.77 |
| F | 1.03 | 0.43 | 0.00 |
The present invention's periscopic zoom lens has the multiple lens group removable in it, so that the amount of movement of each set of lenses can be relatively less, thereby can reduce the volume of whole zoom lens. Simultaneously, the present invention's design can guarantee that also each bifocal position all can obtain best picture performance. Therefore, the present invention's periscopic zoom lens has the characteristics such as high zoom, available machine time weak point and imaging performance are good.
Claims (15)
1, a kind of periscopic zoom lens is characterized in that: include successively from object side to imaging side: first lens combination with positive refracting power; Second lens combination with negative refracting power; The 3rd lens combination with positive refracting power; The 4th lens combination with positive refracting power; The 5th lens combination; The 6th lens combination with negative refracting power; And has the 7th lens combination of positive refracting power; Wherein, first and third, five and seven lens combination are for fixedly installing, when this zoom lens from wide-angle side when far-end carries out zoom, the second and the 4th lens combination is close to the 3rd lens combination, the 6th lens combination is then close to the 7th lens combination.
2, periscopic zoom lens according to claim 1, it is characterized in that: this first lens combination includes the reflection subassembly of one piece of flexion optical axis.
3, as the periscopic zoom lens as described in the claim 2, it is characterized in that: the focal length GU2f of this second lens combination and the 6th lens group focus satisfy following formula apart from GU6f:
0.1＜|GU2f/GU6f|＜0.5。
4, as the periscopic zoom lens as described in the claim 3, it is characterized in that: this first lens combination includes two pieces of lens and this reflection subassembly, and wherein this reflection subassembly is located between these two pieces of lens; And the lens away from object side have two non-spherical surfaces.
5, as the periscopic zoom lens as described in the claim 4, it is characterized in that: this second lens combination includes three pieces of lens.
6, as the periscopic zoom lens as described in the claim 5, it is characterized in that: the 3rd lens combination includes one piece of lens, and these lens have two non-spherical surfaces.
7, as the periscopic zoom lens as described in the claim 6, it is characterized in that: the 4th lens combination includes two pieces of lens, and it has a non-spherical surface from the nearer lens of object side.
8, as the periscopic zoom lens as described in the claim 7, it is characterized in that: this aspheric surface of the 4th lens combination be the 4th lens combination from object side second surface toward the imaging side direction.
9, as the periscopic zoom lens as described in the claim 8, it is characterized in that: the 5th lens combination includes one piece of lens.
10, as the periscopic zoom lens as described in the claim 9, it is characterized in that: the 6th lens combination has two pieces of lens.
11, as the periscopic zoom lens as described in the claim 10, it is characterized in that: the 7th lens combination has one piece of lens.
12, as the periscopic zoom lens as described in the claim 7, it is characterized in that: this aspheric surface of the 4th lens combination be the 4th lens combination from object side first surface toward the imaging side direction.
13, as the periscopic zoom lens as described in the claim 12, it is characterized in that: the 5th lens combination includes one piece of lens, and these lens have two non-spherical surfaces.
14, as the periscopic zoom lens as described in the claim 13, it is characterized in that: the 6th lens combination has two pieces of lens.
15, as the periscopic zoom lens as described in the claim 14, it is characterized in that: the 7th lens combination has one piece of lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101317423A CN100478731C (en) | 2006-09-28 | 2006-09-28 | Periscopic zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101317423A CN100478731C (en) | 2006-09-28 | 2006-09-28 | Periscopic zoom lens |
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| Publication Number | Publication Date |
|---|---|
| CN101153957A CN101153957A (en) | 2008-04-02 |
| CN100478731C true CN100478731C (en) | 2009-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101317423A Expired - Fee Related CN100478731C (en) | 2006-09-28 | 2006-09-28 | Periscopic zoom lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI427319B (en) * | 2010-09-21 | 2014-02-21 | Optronics Technology Inc A | Miniature zoom lens |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI570467B (en) * | 2012-07-06 | 2017-02-11 | 大立光電股份有限公司 | Optical image capturing system |
| CN114397748A (en) * | 2022-01-27 | 2022-04-26 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1156835A (en) * | 1995-12-11 | 1997-08-13 | 三星航空产业株式会社 | Compact zoom lens system |
| US5666228A (en) * | 1995-09-28 | 1997-09-09 | Fuji Photo Optical Co., Ltd. | Retrofocus type lens |
| CN1576943A (en) * | 2003-07-07 | 2005-02-09 | 莱卡股份有限公司 | Optical arrangement for high power microobjective |
| CN1717609A (en) * | 2003-06-13 | 2006-01-04 | 松下电器产业株式会社 | Zoom lens, imaging device, and camera having imaging device |
-
2006
- 2006-09-28 CN CNB2006101317423A patent/CN100478731C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5666228A (en) * | 1995-09-28 | 1997-09-09 | Fuji Photo Optical Co., Ltd. | Retrofocus type lens |
| CN1156835A (en) * | 1995-12-11 | 1997-08-13 | 三星航空产业株式会社 | Compact zoom lens system |
| CN1717609A (en) * | 2003-06-13 | 2006-01-04 | 松下电器产业株式会社 | Zoom lens, imaging device, and camera having imaging device |
| CN1576943A (en) * | 2003-07-07 | 2005-02-09 | 莱卡股份有限公司 | Optical arrangement for high power microobjective |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI427319B (en) * | 2010-09-21 | 2014-02-21 | Optronics Technology Inc A | Miniature zoom lens |
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| CN101153957A (en) | 2008-04-02 |
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