CN102955232A - Zoom camera lens - Google Patents
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- CN102955232A CN102955232A CN2011102412746A CN201110241274A CN102955232A CN 102955232 A CN102955232 A CN 102955232A CN 2011102412746 A CN2011102412746 A CN 2011102412746A CN 201110241274 A CN201110241274 A CN 201110241274A CN 102955232 A CN102955232 A CN 102955232A
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Abstract
The invention relates to a zoom camera lens comprising a first lens cluster negative diopter and a second lens cluster positive diopter from the objection side to the image side. The second lens cluster comprises a plurality of lenses, and the lens closest to the image side is provided with a positive curvature on the surface facing the image side. According to above structure, an existing known zoom camera lens, the zoom camera lens is capable of generating higher amplification factor and better image quality on the premise that cost is reduced and lightness and thinness are realized.
Description
Technical field
The present invention relates to a kind of zoom lens, particularly relate to a kind of lightening, cost is low, high magnification and the good zoom lens of image quality.
Background technology
Image capture unit, for example digital camera or digital camera, usually capture the image of thing to be taken the photograph by camera lens module and image sensor, wherein camera lens module makes the light beam generation from thing to be taken the photograph reflect and be gathered on the image sensor, then image sensor is converted to digital electronic signal with the light signal of simulation, in order to carry out follow-up image processing, storage and transmission.
The camera lens module of image capture unit normally is comprised of three to six lens groups (lens group), and the lens group number is fewer usually, and the cost of camera lens module is lower, size is less.Yet the camera lens module of low lens group number possibly can't be taken into account the requirement of good image quality and high magnification.
This shows, above-mentioned existing camera lens module obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, finished by development but have no for a long time applicable design always, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious wish of relevant dealer solves.Therefore how to found a kind of zoom lens of new structure, make it can satisfy simultaneously low-cost, lightening, high magnification, and the requirement of high image quality, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
The object of the invention is to, overcome the defective that existing camera lens module exists, and propose a kind of zoom lens of new structure, technical matters to be solved is to make it under the prerequisite that reduces manufacturing cost, realize simultaneously lightening, high magnification and high image quality, thereby more be suitable for practicality.
The object of the invention to solve the technical problems realizes by the following technical solutions.A kind of zoom lens according to the present invention's proposition, has negative dioptric first lens group from the thing side to sequentially comprise one as side, and second lens group with positive diopter, wherein the second lens group comprises a plurality of lens, and the most close lens as side towards having on the occasion of curvature as side surface.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid zoom lens, wherein said first lens group comprises a plurality of lens, and in those lens the thing side surface of lens of the most close thing side have on the occasion of or negative value curvature, the having on the occasion of curvature as side surface of this lens.
Aforesaid zoom lens, wherein said first lens group comprises a plurality of lens, and the thing side surface of the most close lens as side has on the occasion of curvature in those lens, these lens as side surface have on the occasion of or negative value curvature.
Aforesaid zoom lens, wherein said the second lens group comprises a plurality of lens, the thing side surface of lens of the most close thing side has on the occasion of curvature in those lens, these lens have negative value curvature as side surface.
Aforesaid zoom lens, wherein said the second lens group comprises a plurality of lens, in those lens the thing side surface of the most close lens as side have on the occasion of or negative value curvature.
Aforesaid zoom lens, wherein said the second lens group comprises a plurality of lens, and the Abbe number of the most close lens as side is VDi in those lens, and VDi satisfies: VDi＜30.
Aforesaid zoom lens, wherein said first lens group has the second lens that negative dioptric first lens and has positive diopter from the thing side to sequentially comprise one as side.
Aforesaid zoom lens, this first lens of wherein said first lens group is a spherical lens, these second lens are a non-spherical lens or a free-form surface lens.
Aforesaid zoom lens, this first lens of wherein said first lens group is a glass lens, these second lens are plastic cement lens.
To sequentially comprising a first lens with positive diopter as side, and one has negative dioptric the second lens from the thing side for aforesaid zoom lens, wherein said the second lens group.
Aforesaid zoom lens, this first lens of wherein said the second lens group and this second lens all are non-spherical lens or free-form surface lens.
Aforesaid zoom lens, this first lens of wherein said the second lens group are that glass lens, these second lens are plastic cement lens.
Aforesaid zoom lens also comprises: a diaphragm is arranged between this first lens and this second lens of this second lens group, or is arranged between this first lens group and this second lens group; And an optical filter, be arranged between the imaging surface of this second lens group and this zoom lens.
Aforesaid zoom lens, wherein said zoom lens is adjusted a multiplying power by moving this first lens group and/or this second lens group.
The present invention compared with prior art has obvious advantage and beneficial effect.By technique scheme, zoom lens of the present invention has following advantages and beneficial effect at least: zoom lens of the present invention, can reduce under cost, the lightening condition, produce than existing known varifocal mirror first watch high enlargement ratio with the image quality of high-quality more.
In sum, the invention relates to a kind of zoom lens, has negative dioptric first lens group from the thing side to sequentially comprise one as side, and second lens group with positive diopter, wherein the second lens group comprises a plurality of lens, and the most close lens as side towards having on the occasion of curvature as side surface.The present invention has significant progress technically, and has obvious good effect, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above and other purpose of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
Description of drawings
Figure 1A and Figure 1B are the schematic diagram that shows respectively zoom lens ZL position of each lens when wide-angle side and telescope end of first embodiment of the invention.
Fig. 2 A and Fig. 2 B are the zoom lens that shows respectively the first embodiment, with the curvature of field curve map of wavelength 546nm test light beam at wide-angle side and telescope end.
Fig. 3 A and Fig. 3 B are the zoom lens that shows respectively the first embodiment, with the distortion curve figure of wavelength 546nm test light beam at wide-angle side and telescope end.
Fig. 4 A and Fig. 4 B are the zoom lens that shows respectively the second embodiment, with the curvature of field curve map of wavelength 546nm test light beam at wide-angle side and telescope end.
Fig. 5 A and Fig. 5 B are the zoom lens that shows respectively the second embodiment, with the distortion curve figure of wavelength 546nm test light beam at wide-angle side and telescope end.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, its embodiment of zoom lens, structure, feature and effect thereof to foundation the present invention proposes are described in detail as follows.
Relevant aforementioned and other technology contents of the present invention, Characteristic can clearly present in the following detailed description that cooperates with reference to graphic preferred embodiment.For convenience of description, in following embodiment, identical element represents with identical numbering.
Some embodiments of the present invention will be described in detail as follows.Yet except following description, the present invention can also be widely implements at other embodiment, and protection scope of the present invention is not subjected to the restriction of embodiment, and its protection domain with claim is as the criterion.Moreover for clearer description being provided and being more readily understood the present invention, graphic interior each several part is not drawn according to its relative size, and some size is compared with other scale dependents and exaggerated; Incoherent detail section does not show fully yet, in the hope of graphic succinct.
For reach lightening, cost is low, the requirement of high magnification, high image quality, the embodiment of the invention provides a kind of zoom lens, has negative dioptric first lens group from the thing side to sequentially comprise one as side, and second lens group with positive diopter, wherein the second lens group comprises a plurality of lens, and the most close lens as side towards having as side surface on the occasion of curvature (curvature).
In addition, the first lens group also comprises a plurality of lens, and this first lens group and/or this second lens group relatively move at an optical axis, with a multiplying power (zoom ratio) that determines this zoom lens.In this article, " and/or " mean " and " or " perhaps ".
In addition, preferably, in a plurality of lens of this first lens group, the lens of the most close thing side towards the thing side surface have on the occasion of or negative value curvature, be preferably on the occasion of; The lens of the most close thing side towards having as side surface on the occasion of curvature; Having on the occasion of curvature towards the thing side surface of the most close lens as side; The most close lens as side towards have as side surface on the occasion of or negative value curvature, be preferably negative value.Under this structure, the lens of first lens group's the most close thing side can have negative diopter, and the most close lens as side can have positive diopter.
In addition, preferably, in a plurality of lens of this second lens group, the having on the occasion of curvature towards the thing side surface of the lens of the most close thing side; The lens of the most close thing side towards have negative value curvature as side surface; The most close lens as side towards the thing side surface have on the occasion of or negative value curvature, be preferably negative value.Under this structure, the lens of the most close thing side of the second lens group can have positive diopter, and the most close lens as side can have negative diopter.
In addition, preferably, in a plurality of lens of this second lens group, the Abbe number of the most close lens as side is VDi, and VDi meets the following conditions: VDi＜30.
In addition, each lens group respectively comprises at least one non-spherical lens or a free-form surface lens, and its material can be plastic cement or glass; Wherein, plastic cement material can comprise, but is not restricted to, polycarbonate (polycarbonate), cyclic olefine copolymer, for example APEL, and vibrin, such as OKP4 or OKP4HT etc.Particularly, glass lens be glass take optical grade as material, utilize grinding and polishing or glass moulding technique (glass molding process, GMP) to make, and the plastic cement lens can be to utilize the polymkeric substance ejection formation to make.In addition, each free-form surface lens has at least one continuous smooth surface (free-form freedom surface), and each non-spherical lens has at least one non-spherical surface, and this non-spherical surface satisfies following mathematical expression:
Wherein Z is the coordinate values in optical axis OA direction, take optical transmission direction as positive dirction, and A
4, A
6, A
8, A
10And A
12Be asphericity coefficient, K is the quadric surface constant, and C=1/R, C are curvature, and R is radius-of-curvature, and Y is the coordinate values that is orthogonal to optical axis direction, take the top as positive dirction.In addition, the parameters of the aspheric surface mathematical expression of each non-spherical lens or the value of coefficient can be set respectively, to determine the focal length of each non-spherical lens.
The zoom lens of the embodiment of the invention can be applicable to have on the device of image projecting or acquisition function, for example, and digital camera, digital camera, mobile phone, or projector.
Below with two specific embodiments zoom lens of the present invention is described.
Figure 1A and Figure 1B are the schematic diagram that shows respectively zoom lens ZL position of each lens when wide-angle side (wide) and telescope end (tele) of first embodiment of the invention.Wherein, in the present embodiment, zoom lens ZL mainly comprises, and to the picture side, has negative dioptric first lens group G1 from the thing side, and the second lens group G2 with positive diopter.These two lens groups arrange along optical axis OA, and have imaging surface I as side.In addition, zoom lens ZL can comprise diaphragm S and optical filter F.Diaphragm S can be arranged between first lens group G1 and the second lens group G2, enters the luminous flux of the second lens group G2 in order to the light beam of restricted passage first lens group G1; Optical filter F is arranged between the second lens group G2 and the imaging surface I, and in order to the invisible light in the filtering light beam, wherein optical filter F can be an infrared filter.Wherein on the imaging surface I image acquisition unit can be set, penetrate the light beam that filters mating plate F with reception, and convert the optical analog signal to electric digital signal.In addition, between imaging surface I and optical filter F, more can increase planar optics C, in order to protect image acquisition unit.
In the present embodiment, sequentially extremely look like side from the thing side, first lens group G1 comprises the second lens L12 that has negative dioptric first lens L11, has positive diopter; The second lens group G2 comprises first lens L21 with positive diopter, has negative dioptric the second lens L22.Zoom lens ZL of the present invention is not limited to said structure; For example, at some embodiment, first lens L21 and the second lens L22 at least one of them, can be the balsaming lens that is formed by two lens gummed.In addition, aforementioned diaphragm S also can be arranged between first lens L21 and the second lens L22.
In addition, the second lens L12 of first lens group G1, and the first lens L21 of the second lens group G2 and the second lens L22, can adopt two surfaces to be aspheric non-spherical lens, or two the surface be the free-form surface lens of free form surface, or one the surface be aspheric surface another the surface be that the lens of free form surface, all the other lens can adopt the two sides to be glass lens or the plastic cement lens of sphere.In the present embodiment, first lens L11 is that glass lens, the second lens L12 that two surfaces are sphere is that two surfaces are aspheric plastic cement lens, be the aspheric surface glass lens made from glass moulding and first lens L21 is two surfaces, the second lens L22 is that two surfaces are aspheric plastic cement lens.
In addition, when zoom lens ZL need to change its whole multiplying power (zoom ratio), can adjust multiplying power by mobile first lens group G1 and the second lens group G1; By one of them or its combination of mobile first lens group G1, the second lens group G2, imaging surface I, with adjusting focal length or compensation focus offset (shift), make the imaging clearly on the imaging surface I again.Preferably, adjusting focal length is to finish by being moved into image planes I.For example, as close the second lens group G2 of first lens group G1, meeting is so that the whole focal length of zoom lens ZL increases, and this moment can be by being moved into image planes I, the compensation focus offset.
Table one is listed the particulars according to the first embodiment zoom lens, and it comprises radius-of-curvature, thickness, refractive index, Abbe number of each lens etc.Wherein the surperficial code name of eyeglass is to the sequentially layout of picture side from the thing side, for example: " S1 " represents first lens L11 towards the surface of thing side, and " S2 " represents first lens L11 and represent the second lens L12 towards surface, " S3 " of picture side and represent diaphragm surface etc. towards surface, " S " of thing side.
Table one
In addition, " thickness " represents this surface and adjacent to the distance as side one surface, for example, " thickness " of surperficial S1 is the distance of surperficial S1 and surperficial S2, and " thickness " of surperficial S2 is the distance of surperficial S2 and surperficial S3.If one-tenth-value thickness 1/10 is denoted as " D1 " " D2 ", and different, its distance as shown in Table 2 according to wide-angle side and telescope end for the distance that represents two surfaces.
Table two
| Thickness | Wide-angle side (mm) | Telescope end (mm) |
| D1 | 20.534 | 0.4 |
| D2 | 10.222 | 6.551 |
In addition, table three lists such as table one embodiment respectively at focal distance f, f-number FNO, visual angle half-angle ω (half angle view), image height Y and the camera lens overall length TL of wide-angle side and telescope end.In the present embodiment, the multiplying power of zoom lens is approximately 4 times.
Table three
| Parameter | Wide-angle side | Telescope end |
| f(mm) | 5.00 | 19.050 |
| FNO | 3.30 | 6.25 |
| ω(°) | 39.160 | 11.635 |
| Y(mm) | 3.4 | 3.9 |
| TL(mm) | 42.375 | 34.8767 |
In addition, in Table 1, the surface of surperficial code name " S3 " " S4 " " S5 " " S6 " " S7 " " S8 " is aspheric surface, and the every coefficient in its aspheric surface mathematical expression as shown in Table 4.
Table four
| K | A 4 | A 6 | A 8 | A 10 | A 12 | |
| S3 | -100.000 | 3.1589E-05 | -2.5337E-05 | 1.1281E-06 | -1.4489E-08 | 0 |
| S4 | 21.487 | -1.3184E-04 | -1.7135E-05 | 7.8385E-07 | -1.1243E-08 | 0 |
| S5 | -1.860 | 1.0661E-03 | -1.9017E-04 | 1.9636E-05 | -3.3322E-06 | 0 |
| S6 | 4.756 | -1.9268E-03 | 2.6487E-04 | -3.0942E-05 | -2.9852E-07 | 0 |
| S7 | 3.601 | 2.6748E-03 | 7.7865E-04 | -8.9207E-05 | 2.1252E-06 | 0 |
| S8 | -1.734 | 6.6875E-03 | 4.0632E-04 | 4.4086E-05 | -9.9841E-06 | 0 |
Fig. 2 A to Fig. 2 B is the zoom lens that shows respectively such as table one the first embodiment, with the curvature of field (field curvature) curve map of wavelength 546nm test light beam at wide-angle side and telescope end.Wherein, curve T, S are respectively that zoom lens is for the curvature of field value of tangent light beam (Tangential Rays) with sagittal beam (SagittalRays).The tangent curvature of field value and the Sagittal field curvature value that are presented at wide-angle side among the figure all are controlled in (0.10mm, 0.10mm) scope, and tangent curvature of field value and the Sagittal field curvature value of telescope end all are controlled in (0.00mm, 0.025mm) scope.
Fig. 3 A to Fig. 3 B is the zoom lens that shows respectively such as table one embodiment, with distortion (distortion) curve map of wavelength 546nm test light beam at wide-angle side and telescope end.The aberration rate that is presented at wide-angle side among the figure is controlled in (10%, 0.0%) scope, and the aberration rate of telescope end is controlled in (0.9%, 0.0%) scope.
The structure of the zoom lens of second embodiment of the invention, roughly the same with the first embodiment shown in Figure 1A, Figure 1B, difference is in consisting of eyeglass, the particularly characteristic of the second lens L22 different, and its surface towards the thing side has on the occasion of curvature; Below do not exist together with example explanation, exist together mutually and can continue to use previous explanation, repeat no more.
Table five is listed the particulars according to the second embodiment zoom lens.Wherein the arranged mode of surperficial code name is identical with table one.
Table five
In addition, " thickness " represents this surface and distance adjacent to picture side one surface.If one-tenth-value thickness 1/10 is denoted as " D1 " " D2 ", and different, its distance as shown in Table 6 according to wide-angle side and telescope end for the distance that represents two surfaces.
Table six
| Thickness | Wide-angle side (mm) | Telescope end (mm) |
| D1 | 19.459 | 0.7 |
| D2 | 10.175 | 23.415 |
In addition, table seven lists such as table five embodiment respectively at focal distance f, f-number FNO, visual angle half-angle ω (half angle view), image height Y and the camera lens overall length TL of wide-angle side and telescope end.In the present embodiment, the multiplying power of zoom lens is approximately 4 times.
Table seven
| Parameter | Wide-angle side | Telescope end |
| f(mm) | 5.00 | 20.000 |
| FNO | 3.20 | 6.4 |
| ω(°) | 44.310 | 11.080 |
| Y(mm) | 3.8 | 3.9 |
| TL(mm) | 40.811 | 35.292 |
In addition, in table five, the surface of surperficial code name " S3 " " S4 " " S5 " " S6 " " S7 " " S8 " is aspheric surface, and the every coefficient in its aspheric surface mathematical expression as shown in Table 8.
Table eight
| K | A 4 | A 6 | A 8 | A 10 | A 12 | |
| S3 | 53.106 | 5.3965E-05 | -3.7559E-05 | 1.5586E-06 | -2.5606E-08 | 0 |
| S4 | 74.352 | -1.5836E-04 | -3.0539E-05 | 1.2676E-06 | -2.2709E-08 | 0 |
| S5 | 1.239 | -2.4202E-03 | -1.9410E-04 | 6.6839E-06 | -2.9788E-06 | 0 |
| S6 | -6.581 | -1.3703E-03 | 4.5212E-06 | -3.0334E-05 | 8.9355E-07 | 0 |
| S7 | -10.000 | 2.6918E-03 | 2.7729E-05 | -3.2976E-05 | 1.7420E-06 | 0 |
| S8 | -5.501 | 8.6768E-03 | -2.6518E-04 | 5.0102E-05 | -6.1108E-06 | 0 |
Fig. 4 A to Fig. 4 B is the zoom lens that shows respectively such as table five the second embodiment, with the curvature of field (field curvature) curve map of wavelength 546nm test light beam at wide-angle side and telescope end.Wherein, curve T, S are respectively that zoom lens is for the curvature of field value of tangent light beam (Tangential Rays) with sagittal beam (SagittalRays).The tangent curvature of field value and the Sagittal field curvature value that are presented at wide-angle side among the figure all are controlled in (0.50mm, 0.50mm) scope, and the tangent curvature of field value of telescope end and Sagittal field curvature value all are controlled in (0.075mm, 0.010mm) scope.
Fig. 5 A to Fig. 5 B is the zoom lens that shows respectively such as table five the second embodiment, with distortion (distortion) curve map of wavelength 546nm test light beam at wide-angle side and telescope end.The aberration rate that is presented at wide-angle side among the figure is controlled in (20%, 0.0%) scope, and the aberration rate of telescope end is controlled in (0.5%, 0.0%) scope.
Above, the zoom lens of the embodiment of the invention can obtain well-corrected in the curvature of field of wide-angle side and telescope end.And, utilize the zoom lens of the embodiment of the invention, can under the condition that reduces cost, miniaturization, produce the image of high magnification and high image quality.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (14)
1. zoom lens, it is characterized in that its from the thing side to sequentially comprising as side:
One has negative dioptric first lens group; And
One has the second lens group of positive diopter, comprises a picture side surface, wherein should have on the occasion of curvature as side surface.
2. zoom lens according to claim 1, it is characterized in that wherein said first lens group comprises a plurality of lens, and in those lens the thing side surface of lens of the most close thing side have on the occasion of or negative value curvature, the having on the occasion of curvature as side surface of this lens.
3. zoom lens according to claim 1, it is characterized in that wherein said first lens group comprises a plurality of lens, and the thing side surface of the most close lens as side has on the occasion of curvature in those lens, these lens as side surface have on the occasion of or negative value curvature.
4. zoom lens according to claim 1 is characterized in that wherein said the second lens group comprises a plurality of lens, and the thing side surface of lens of the most close thing side has on the occasion of curvature in those lens, these lens have negative value curvature as side surface.
5. zoom lens according to claim 1 is characterized in that wherein said the second lens group comprises a plurality of lens, in those lens the thing side surface of the most close lens as side have on the occasion of or negative value curvature.
6. zoom lens according to claim 1 is characterized in that wherein said the second lens group comprises a plurality of lens, and the Abbe number of the most close lens as side is VDi in those lens, and VDi satisfies: VDi＜30.
7. according to claim 1 or 3 described zoom lens, it is characterized in that wherein said first lens group has the second lens that negative dioptric first lens and has positive diopter from the thing side to sequentially comprise one as side.
8. zoom lens according to claim 7, this first lens that it is characterized in that wherein said first lens group is a spherical lens, these second lens are a non-spherical lens or a free-form surface lens.
9. zoom lens according to claim 8, this first lens that it is characterized in that wherein said first lens group is a glass lens, these second lens are plastic cement lens.
10. according to claim 1 or 4 described zoom lens, it is characterized in that wherein said the second lens group from the thing side to sequentially comprising a first lens with positive diopter as side, and one has negative dioptric the second lens.
11. zoom lens according to claim 10 is characterized in that this first lens of wherein said the second lens group and this second lens all are non-spherical lens or free-form surface lens.
12. zoom lens according to claim 11, this first lens that it is characterized in that wherein said the second lens group are that glass lens, these second lens are plastic cement lens.
13. zoom lens according to claim 10 is characterized in that it also comprises:
One diaphragm is arranged between this first lens and this second lens of this second lens group, or is arranged between this first lens group and this second lens group; And
One optical filter is arranged between the imaging surface of this second lens group and this zoom lens.
14. zoom lens according to claim 1 is characterized in that wherein said zoom lens adjusts a multiplying power by mobile this first lens group and/or this second lens group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102412746A CN102955232A (en) | 2011-08-17 | 2011-08-17 | Zoom camera lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102412746A CN102955232A (en) | 2011-08-17 | 2011-08-17 | Zoom camera lens |
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| Publication Number | Publication Date |
|---|---|
| CN102955232A true CN102955232A (en) | 2013-03-06 |
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ID=47764260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102412746A Pending CN102955232A (en) | 2011-08-17 | 2011-08-17 | Zoom camera lens |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777333A (en) * | 2013-11-04 | 2014-05-07 | 福州开发区鸿发光电子技术有限公司 | High-resolving force optical zoom lens with large target surface |
| CN105137580A (en) * | 2015-09-11 | 2015-12-09 | 舜宇光学(中山)有限公司 | Day-night dual-purpose zoom lens capable of eliminating heat difference |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030165018A1 (en) * | 2001-11-16 | 2003-09-04 | Olympus Optical Co., Ltd. | Zoom lens, and electronic imaging system using the same |
| US20100284093A1 (en) * | 2009-05-09 | 2010-11-11 | Canon Kabushiki Kaisha | Zoom lens and image pickup apparatus having the same |
-
2011
- 2011-08-17 CN CN2011102412746A patent/CN102955232A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030165018A1 (en) * | 2001-11-16 | 2003-09-04 | Olympus Optical Co., Ltd. | Zoom lens, and electronic imaging system using the same |
| US20100284093A1 (en) * | 2009-05-09 | 2010-11-11 | Canon Kabushiki Kaisha | Zoom lens and image pickup apparatus having the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777333A (en) * | 2013-11-04 | 2014-05-07 | 福州开发区鸿发光电子技术有限公司 | High-resolving force optical zoom lens with large target surface |
| CN105137580A (en) * | 2015-09-11 | 2015-12-09 | 舜宇光学(中山)有限公司 | Day-night dual-purpose zoom lens capable of eliminating heat difference |
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