CN112731636B - Telescopic three-group continuous zooming optical lens, imaging component and mobile phone - Google Patents
Telescopic three-group continuous zooming optical lens, imaging component and mobile phone Download PDFInfo
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- CN112731636B CN112731636B CN202011384937.5A CN202011384937A CN112731636B CN 112731636 B CN112731636 B CN 112731636B CN 202011384937 A CN202011384937 A CN 202011384937A CN 112731636 B CN112731636 B CN 112731636B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/143—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only
- G02B15/1435—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being negative
- G02B15/143503—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being negative arranged -+-
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
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Abstract
The invention discloses a telescopic three-group continuous zooming optical lens, an imaging component and a mobile phone, wherein the telescopic three-group continuous zooming optical lens comprises a lens main body; the lens main body comprises a lens barrel, a zoom lens group and a compensation lens group; the variable magnification lens group comprises a first lens group with negative focal power and a second lens group with positive focal power, the compensation lens group comprises a third lens group with negative focal power, and the first lens group, the second lens group and the third lens group can move along the front-back direction; the focal lengths of the first lens group, the second lens group and the third lens group are f 1、f2 and f 3, the distance between the first lens group and the second lens group at the wide angle end and the telescopic end is d w12、dt12, the distance between the second lens group and the third lens group at the wide angle end and the telescopic end is d w23、dt23, and the following relational expression is satisfied:andThe invention is beneficial to the application of the lens main body in electronic equipment with thinner thickness such as mobile phones and the like.
Description
Technical Field
The invention relates to the technical field of optical lenses, in particular to a telescopic three-group continuous zooming optical lens, an imaging component and a mobile phone.
Background
With the continuous development of related technologies of mobile phone camera lenses, consumers have higher and higher requirements on the performance of mobile phone lenses, and the scheme of matching the traditional fixed-focus mobile phone lenses with digital zooming cannot meet the increasing consumption demands. The continuous optical zoom lens has the capability of continuous zooming in a certain focal length range, and can realize perfect imaging with different multiplying powers, so that the direction of efforts of manufacturers of the lenses of various large mobile phones is formed. However, the conventional continuous optical zoom lens scheme cannot be directly transferred to the mobile phone for application, the biggest obstacle is that the thickness of a typical smart phone is less than 10mm in terms of the volume of the lens, and the length of the conventional optical zoom lens is at least on the order of tens of millimeters, so that the optical zoom lens is applied to mobile phone shooting and faces great difficulty.
Disclosure of Invention
The invention mainly aims to provide a telescopic three-group continuous zoom optical lens, an imaging component and a mobile phone, and aims to solve the problem that the traditional continuous learning zoom lens cannot be directly applied to electronic equipment with thinner thickness, such as a mobile phone.
In order to achieve the above objective, the present invention provides a telescopic three-group continuous zoom optical lens, comprising a lens body, wherein the direction from an object side to an image side along an optical axis of the lens body is from front to back;
the lens main body comprises a lens barrel, a zoom lens group and a compensation lens group, wherein the zoom lens group and the compensation lens group are arranged in the lens barrel;
The variable magnification lens group comprises a first lens group with negative focal power and a second lens group with positive focal power, the compensation lens group comprises a third lens group with negative focal power, and the first lens group, the second lens group and the third lens group are sequentially arranged from front to back and are respectively arranged in a movable way along the front and back direction relative to the lens barrel;
The focal length of the first lens group is f 1, the focal length of the second lens group is f 2, the focal length of the third lens group is f 3, the distance between the first lens group and the second lens group at the wide-angle end is d w12, the distance between the first lens group and the second lens group at the telephoto end is d t12, the distance between the second lens group and the third lens group at the wide-angle end is d w23, the distance between the second lens group and the third lens group at the telephoto end is d t23, and the following relation is satisfied:
and
Optionally, the lens main body further includes a diaphragm, where the diaphragm is disposed in the second lens group and fixed relative to the second lens group, so as to be driven by the second lens group to move in a front-back direction.
Optionally, the diaphragm is disposed on a front side of the second lens group.
Optionally, the first lens group includes a first lens and a second lens sequentially arranged from front to back;
the second lens group comprises a third lens and a fourth lens which are sequentially arranged from front to back, wherein the fourth lens is a double-lens;
the third lens group comprises a fifth lens and a sixth lens;
The first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are all aspheric lenses.
Optionally, the lens body further includes a driving device, and the driving device is configured to drive the first lens group, the second lens group, and the third lens group to move in a front-back direction respectively.
Optionally, the driving device includes:
the CAM cylinder driving mechanism is arranged on the lens barrel and used for driving the first lens group and the second lens group to move along the front-back direction respectively; and
The VCM driving mechanism is arranged on the lens barrel and used for driving the third lens group to move in the front-back direction.
Optionally, when the first lens group, the second lens group, the third lens group and the fourth lens group move away from each other in the front-back direction, the length of the lens main body is 16.34-19.24 mm.
Optionally, when the first lens group, the second lens group, the third lens group and the fourth lens group move close to each other in the front-back direction, the shortest optical length of the lens body is 7.0mm-7.9mm.
In addition, in order to achieve the above object, the present invention further provides an imaging assembly, which includes a telescopic continuous zoom lens, the telescopic three-group continuous zoom optical lens includes a lens body, and a direction from an object side to an image side along an optical axis of the lens body is from front to back;
the lens main body comprises a lens barrel, a zoom lens group and a compensation lens group, wherein the zoom lens group and the compensation lens group are arranged in the lens barrel;
The variable magnification lens group comprises a first lens group with negative focal power and a second lens group with positive focal power, the compensation lens group comprises a third lens group with negative focal power, and the first lens group, the second lens group and the third lens group are sequentially arranged from front to back and are respectively arranged in a movable way along the front and back direction relative to the lens barrel;
The focal length of the first lens group is f 1, the focal length of the second lens group is f 2, the focal length of the third lens group is f 3, the distance between the first lens group and the second lens group at the wide-angle end is d w12, the distance between the first lens group and the second lens group at the telephoto end is d t12, the distance between the second lens group and the third lens group at the wide-angle end is d w23, the distance between the second lens group and the third lens group at the telephoto end is d t23, and the following relation is satisfied:
and
In addition, in order to achieve the purpose, the invention further provides a mobile phone, and the mobile phone comprises the imaging assembly.
In the technical scheme provided by the invention, the relative movement between the zoom lens group and the compensation lens group enables the focal length of the lens main body to be adjustable, thereby being convenient for the lens main body to be applied to more scenes; when the imaging definition is reduced due to a phase difference generated in the lens body as a result of a relative movement between the variable magnification lens group and the compensation lens group, the third lens group in the compensation lens group is capable of performing image plane compensation, thereby contributing to an improvement in the imaging definition; the relative movement between the first lens group and the second lens group in the zoom lens group can realize continuous zooming of the lens main body, and the imaging quality during continuous zooming and the size of the lens main body can be weighed by combining the relational expression, so that the lens main body is beneficial to the application of the lens main body on electronic equipment with imaging function such as a mobile phone and relatively thin thickness.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained from the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an embodiment of a lens body (a first state) according to the present invention;
Fig. 2 is a schematic structural view of the lens body (second state) in fig. 1;
Fig. 3 is a schematic view of the structure of the lens body (third state) in fig. 1
FIG. 4 is a wide-angle end MTF plot of the lens body of FIG. 1;
FIG. 5 is a mid-focal-end MTF plot of the lens body of FIG. 1;
FIG. 6 is a graph of the telescopic MTF of the lens body of FIG. 1;
Reference numerals illustrate:
| Reference numerals | Name of the name | Reference numerals | Name of the name |
| 100 | First lens group | 220 | Fourth lens |
| 110 | First lens | 300 | Third lens group |
| 120 | Second lens | 310 | Fifth lens |
| 200 | Second lens group | 320 | Sixth lens |
| 210 | Third lens |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection required by the present invention.
With the continuous development of related technologies of mobile phone camera lenses, consumers have higher and higher requirements on the performance of mobile phone lenses, and the scheme of matching the traditional fixed-focus mobile phone lenses with digital zooming cannot meet the increasing consumption demands. The continuous optical zoom lens has the capability of continuous zooming in a certain focal length range, and can realize perfect imaging with different multiplying powers, so that the direction of efforts of manufacturers of the lenses of various large mobile phones is formed. However, the conventional continuous optical zoom lens scheme cannot be directly transferred to the mobile phone for application, the biggest obstacle is that the thickness of a typical smart phone is less than 10mm in terms of the volume of the lens, and the length of the conventional optical zoom lens is at least on the order of tens of millimeters, so that the optical zoom lens is applied to mobile phone shooting and faces great difficulty.
Referring to fig. 1 to 3, the telescopic three-group continuous zoom optical lens provided by the present invention includes a lens body, and a direction from an object side to an image side along an optical axis of the lens body is from front to back; the lens main body comprises a lens barrel, a zoom lens group and a compensation lens group, wherein the zoom lens group and the compensation lens group are arranged in the lens barrel; the variable magnification lens group comprises a first lens group 100 with negative focal power and a second lens group 200 with positive focal power, the compensation lens group comprises a third lens group 300 with negative focal power, the first lens group 100, the second lens group 200 and the third lens group 300 are sequentially arranged from front to back and are respectively and movably arranged along the front and back directions relative to the lens barrel; wherein, the focal length of the first lens group 100 is f 1, the focal length of the second lens group 200 is f 2, the focal length of the third lens group 300 is f 3, the distance between the first lens group 100 and the second lens group 200 at the wide-angle end is d w12, the distance between the first lens group 100 and the second lens group 200 at the telephoto end is d t12, the distance between the second lens group 200 and the third lens group 300 at the wide-angle end is d w23, the distance between the second lens group 200 and the third lens group 300 at the telephoto end is d t23, and the following relationship is satisfied:
and
In the technical scheme provided by the invention, the relative movement between the zoom lens group and the compensation lens group enables the focal length of the lens main body to be adjustable, thereby being convenient for the lens main body to be applied to more scenes; when the imaging sharpness is lowered due to a phase difference generated in the lens body by the relative movement between the variable magnification lens group and the compensation lens group, the third lens group 300 in the compensation lens group can perform image plane compensation, thereby contributing to an improvement in the imaging sharpness; the relative movement between the first lens group 100 and the second lens group 200 in the zoom lens group can realize continuous zooming of the lens main body, and the imaging quality during continuous zooming and the size of the lens main body can be weighed by combining the relational expression, so that the lens main body is beneficial to the application of the lens main body on electronic equipment with imaging function such as a mobile phone and the like and with thinner thickness.
It can be understood that the zoom lens group mainly plays a role of zooming, and can realize continuous zooming from the wide angle end to the telescopic end of the lens main body; the compensating lens group mainly plays a role in compensating an image plane, and can compensate the image plane in the continuous zooming process of the lens main body, so that the imaging quality of the lens main body during continuous zooming is ensured. The zoom principle of the zoom lens group and the image plane compensation principle of the compensation lens group are already known in the prior art, and will not be described in detail herein.
The first lens group 100, the second lens group 200 and the third lens group 300 are all arranged in the lens barrel and move along the front and back direction relative to the lens, and it can be understood that when each lens group of the first lens group 100, the second lens group 200 and the third lens group 300 moves along the front and back direction, a movable stroke which is close to each other and far away from each other exists between the adjacent lens groups, and the focal length of the lens main body can be correspondingly changed by adjusting the relative positions of the first lens group 100 and the second lens group 200 in the zoom lens group, so that the lens main body can be adjusted to be changed to a required multiple; by adjusting the relative position of the third lens group 300 within the barrel, adjustment of the lens body imaging frame to a desired imaging quality can be achieved.
When the first lens group 100, the second lens group 200 and the third lens group 300 are arranged according to the above relation, the zoom function, the image plane compensation function and the size of the lens body can be realized within a proper range, so that the application of the lens body in electronic equipment with different application scenes, such as different thickness requirements, is improved. And when the lens main body meets the relation, the lens main body can realize a continuous zooming range of 9.1 mm-18.2 mm. Please refer to fig. 4 to fig. 6, which are a wide-angle end MTF curve chart, a mid-focal end MTF curve chart, and a telephoto end MTF curve chart of the lens body in the present design.
Further, in an embodiment, the length of the lens body is 16.34 to 19.24mm when the first lens group 100, the second lens group 200, and the third lens group 300 are moved away from each other in the front-rear direction. It can be understood that the lens barrel of the lens body is configured to be of a telescopic structure, and can be driven to perform telescopic deformation when the first lens group 100, the second lens group 200 and the third lens group 300 move in the front-rear direction; or the lens barrel may be disposed to be movable back and forth with respect to, for example, the mobile phone body, so that when the first lens group 100, the second lens group 200, and the third lens group 300 move in the back and forth direction, they can be driven to move in the back and forth direction to be at least partially accommodated in the mobile phone body and at least partially protrude from the outer wall of the mobile phone body. The arrangement is such that the length of the lens body is 16.34-19.24 mm when the first lens group 100, the second lens group 200 and the third lens group 300 are far away from each other, and interference between the protruding lens and the related operation of the user is avoided when the length of the lens body is within the above range, and the interference is mutually affected when the user uses the mobile phone.
Based on the above, in an embodiment, when the first lens group 100, the second lens group 200, the third lens group 300 and the fourth lens group 220 move close to each other along the front-back direction, the optical length of the lens body is 7.0mm-7.9mm, specifically, 7.9mm, and the mechanical length is less than 8.4mm, so that the requirement of the smart phone on the lens length is met, and the lens body is retracted and stored as much as possible when not in use.
The forward and backward movement of the first lens group 100, the second lens group 200 and the third lens group 300 may be achieved by a manual operation of a user, or in an embodiment, the lens body further includes a driving device for driving the first lens group 100, the second lens group 200 and the third lens group 300 to move forward and backward, respectively, to achieve an automatic and more precise movement of the first lens group 100, the second lens group 200 and the third lens group 300.
Specifically, in one embodiment, the driving device includes a CAM cylinder driving mechanism and a VCM driving mechanism, where the CAM cylinder driving mechanism is disposed on the lens barrel, and is configured to drive the first lens group 100 and the second lens group 200 to move in a front-back direction respectively; the VCM driving mechanism is disposed on the lens barrel, and is configured to drive the third lens group 300 to move in a front-back direction.
The CAM barrel drive mechanism is well established and will not be described in detail herein. Taking the first lens group 100 as an example, the CAM cylinder driving mechanism is represented by, for example, that the first lens group 100 is provided with a frame structure for supporting the lens in the first lens group 100, the frame structure is movably sleeved with a CAM cylinder, a guide pillar is arranged at the frame structure, the CAM cylinder is provided with a CAM groove corresponding to the guide pillar, and the guide pillar is movably connected with the CAM groove, so that the first lens group 100 moves relative to the lens barrel.
The VCM driving mechanism is also a well-established technology and will not be described in detail herein. The VCM driving mechanism is, for example, represented by that the third lens group 300 is provided with a frame structure for supporting the lens in the third lens group 300, the outer side wall of the frame structure is provided with a first magnetic block and a long-strip-shaped position sensing magnetic sheet, and the long-strip-shaped position sensing magnetic sheet extends along the front-back direction; the VCM motor coil is opposite to the magnetic block on the lens cone and used for driving the frame structure to move forwards and backwards, and the magnetoresistive sensor is opposite to the position sensing magnetic sheet and used for detecting the position of the frame structure, the VCM motor coil is provided with a coil groove facing forwards and backwards, a second magnetic block is inserted and fixed in the coil groove, and the magnetic poles at the end parts of the first magnetic block and the second magnetic block, which are close to each other, are attracted to each other.
Further, in an embodiment, the lens body further includes a diaphragm, where the diaphragm is disposed on the second lens assembly 200 and fixed relative to the second lens assembly 200, so as to be driven by the second lens assembly 200 to move in a front-rear direction. The diaphragm is an aperture diaphragm, and can limit the imaging light beam to be the worst; the position of the diaphragm and the size of the aperture have a direct relationship with the brightness, sharpness and partial aberration of the lens body. The diaphragm is arranged at the second lens group 200 and synchronously moves along the front and back along with the second lens group 200, so that the brightness and definition of more proper imaging can be achieved in the zooming process of the lens main body.
It can be understood that the smaller the aperture of the diaphragm, the smaller the spherical aberration, the clearer the image, the larger the depth of field, but the weaker the brightness of the image; conversely, the larger the aperture of the diaphragm, the stronger the brightness of the image, the larger the spherical aberration of the rice, the worse the relative sharpness, and the smaller the depth of field. Therefore, the size of the through-hole of the diaphragm needs to be set within a proper range. In this embodiment, the light-transmitting hole of the diaphragm may be set to a fixed size, or may be set to be adjustable within a certain size range.
In an embodiment, the diaphragm is disposed on the front side of the second lens group 200, so as to avoid interference between the lens in the second lens group 200 caused by the arrangement of the diaphragm.
In an embodiment, the first lens group 100 includes a first lens 110 and a second lens 120 sequentially disposed from front to back; the second lens assembly 200 includes a third lens 210 and a fourth lens 220 sequentially disposed from front to back, wherein the fourth lens 220 is a biconvex lens; the third lens group 300 includes a fifth lens 310 and a sixth lens 320; the first lens 110, the second lens 120, the third lens 210, the fourth lens 220, the fifth lens 310 and the sixth lens 320 are all aspheric lenses.
Specifically, referring to tables 1 to 4 below, specific data for realizing a retractable continuous-zoom optical lens are provided. Wherein S1-S19 in Table 1 represent the surface numbers of the optical elements, R represents the radius of curvature of the optical elements, D represents the thickness or air interval of the optical elements, nd represents the D-ray refractive index of the optical material used, and Vd represents the D-ray Abbe number of the optical material used; f' in Table 2 represents the focal length of the system, F-number is the F number of the system, and ω is the half field angle of the system; d1 in table 3 represents a variable pitch of the first lens group 100100 and the second lens group 200200, D2 represents a variable pitch of the second lens group 200200 and the third lens group 300300, and D3 represents a variable pitch of the third lens group 300300 and the image plane; the first lens 110110, the second lens 120120, the third lens 210210, the fourth lens 220220, the fifth lens 310310, and the sixth lens 320410 are all aspheric lenses, and table 4 shows the aspheric coefficients of all surfaces of the aspheric lenses, wherein K is the quadric coefficient of the aspheric surface, and A4 to a20 are even aspheric coefficients.
TABLE 1
| Face number | Radius of curvature R (mm) | Distance D (mm) | Refractive index Nd | Abbe number Vd |
| S1 | 93.40～93.50 | 0.3 | 1.8～1.9 | 35～40 |
| S2 | 6.90～6.95 | 0.025～0.030 | ||
| S3 | 7.52～7.53 | 0.8 | 1.6～1.7 | 18～23 |
| S4 | 19.21～19.22 | 6.59～6.60 | ||
| Stop | INF | -0.2 | ||
| S6 | 4.74～4.75 | 1.9 | 1.45～1.55 | 80～85 |
| S7 | -13.94～-13.95 | 0.02 | ||
| S8 | 10.37～10.38 | 1.1 | 1.5～1.6 | 55～60 |
| S9 | -25.96～25.97 | 0.3 | 1.6～1.7 | 20～25 |
| S10 | 12.22～12.23 | 5.25～5.26 | ||
| S11 | 6.99～7.00 | 0.35 | 1.5～1.6 | 55～60 |
| S12 | 2.55～2.56 | 0.25～0.26 | ||
| S13 | 9.15～9.16 | 0.7 | 1.6～1.7 | 18～23 |
| S14 | 28.34～27.35 | 0 | ||
| S15 | INF | 1.83～1.84 | ||
| S16 | INF | 0 | ||
| S17 | INF | 0.65～0.66 | ||
| IMAGE | INF |
TABLE 2
| System focal length f' | F number F-number | Half field angle omega | |
| Wide angle end | 9.1 | 1.94 | 25.6 |
| Middle coke end | 13.6 | 2.3 | 16.9 |
| Telescope end | 18.2 | 2.67 | 12.7 |
TABLE 3 Table 3
| D1 | D2 | D3 | |
| Wide angle end | 6.59 | 5.25 | 1.83 |
| Middle coke end | 2.35 | 5.31 | 3.56 |
| Telescope end | 0.14 | 5.43 | 5.21 |
TABLE 4 Table 4
In addition, the invention also provides an imaging assembly, which comprises the telescopic continuous zoom optical lens.
It should be noted that, the detailed structure of the telescopic continuous-zoom optical lens in the imaging assembly can refer to the embodiment of the telescopic continuous-zoom optical lens, and will not be described herein again; because the telescopic continuous-zoom optical lens is used in the imaging component, the embodiment of the imaging component comprises all the technical schemes of all the embodiments of the telescopic continuous-zoom optical lens, and the achieved technical effects are identical and are not repeated herein.
In addition, the invention also provides a mobile phone, and the imaging assembly comprises the imaging assembly.
It should be noted that, the detailed structure of the imaging assembly in the mobile phone may refer to the embodiment of the imaging assembly, and will not be described herein again; because the imaging component is used in the mobile phone of the invention, the embodiment of the mobile phone of the invention comprises all the technical schemes of all the embodiments of the imaging component, and the achieved technical effects are identical, and are not repeated here.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the present description and drawings or direct/indirect application in other related technical fields are included in the scope of the present invention under the inventive concept of the present invention.
Claims (8)
1. The telescopic three-group continuous zoom optical lens is characterized by comprising a lens main body, wherein the direction from an object space to an image space along the optical axis of the lens main body is from front to back;
the lens main body comprises a lens barrel, a zoom lens group and a compensation lens group, wherein the zoom lens group and the compensation lens group are arranged in the lens barrel;
The variable magnification lens group only comprises a first lens group with negative focal power and a second lens group with positive focal power, the compensation lens group only comprises a third lens group with negative focal power, and the first lens group, the second lens group and the third lens group are sequentially arranged from front to back and are respectively arranged in a movable way along the front-back direction relative to the lens barrel;
Wherein the focal length of the first lens group is The focal length of the second lens group isThe focal length of the third lens group isThe first lens group and the second lens group have a spacing at the wide-angle end ofThe distance between the first lens group and the second lens group at the telescope end isThe distance between the second lens group and the third lens group at the wide-angle end isThe distance between the second lens group and the third lens group at the telescopic end isThe following relation is satisfied:
，，， And (2) and ；
The lens main body further comprises a diaphragm, and the diaphragm is arranged on the second lens group and fixed relative to the second lens group so as to be driven by the second lens group to move along the front-back direction;
The diaphragm is an aperture diaphragm;
When the first lens group, the second lens group and the third lens group move to be far away from each other along the front-back direction, the length of the lens main body is 16.34-19.24 mm.
2. The retractable three-group progressive optical lens of claim 1 wherein the stop is disposed on a front side of the second lens group.
3. The retractable three-group continuous-zoom optical lens of any one of claims 1 to 2, wherein the first lens group comprises a first lens and a second lens which are sequentially arranged from front to back;
The second lens group comprises a third lens and a fourth lens which are sequentially arranged from front to back, wherein the fourth lens is a double-lens;
the third lens group comprises a fifth lens and a sixth lens;
The first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are all aspheric lenses.
4. The retractable three-group continuous-zoom optical lens of any one of claims 1 to 2, wherein the lens body further comprises driving means for driving the first lens group, the second lens group, and the third lens group to move in the front-rear direction, respectively.
5. The retractable three-group progressive optical lens of claim 4, wherein the driving means comprises:
the CAM cylinder driving mechanism is arranged on the lens barrel and used for driving the first lens group and the second lens group to move along the front-back direction respectively; and
The VCM driving mechanism is arranged on the lens barrel and used for driving the third lens group to move in the front-back direction.
6. The telescopic three-group continuous zoom optical lens according to claim 1, wherein the shortest optical length of the lens body is 7.0mm to 7.9mm when the first lens group, the second lens group, and the third lens group are moved close to each other in the front-rear direction.
7. An imaging assembly comprising a telescopic three-group continuous-zoom optical lens according to any one of claims 1 to 6.
8. A cell phone comprising the imaging assembly of claim 7.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112731637B (en) * | 2020-11-30 | 2024-09-27 | 中山联合光电研究院有限公司 | Telescopic continuous zooming optical lens, imaging component and mobile phone |
| WO2022236663A1 (en) * | 2021-05-11 | 2022-11-17 | 欧菲光集团股份有限公司 | Optical zoom system, zoom module and electronic device |
| CN113296232B (en) * | 2021-05-11 | 2022-08-30 | 江西晶超光学有限公司 | Optical zoom system, zoom module and electronic equipment |
| CN113341549A (en) * | 2021-05-21 | 2021-09-03 | 江西晶超光学有限公司 | Optical zoom system, zoom module and electronic equipment |
| CN113281890B (en) * | 2021-06-25 | 2024-08-13 | 中山联合光电研究院有限公司 | Telescopic four-group continuous zooming optical lens, imaging component and mobile phone |
| CN113325560B (en) * | 2021-06-28 | 2024-12-24 | 中山联合光电研究院有限公司 | Telescopic three-group continuous zoom lens and mobile phone |
| CN115903196A (en) * | 2021-09-30 | 2023-04-04 | 华为技术有限公司 | A kind of zoom lens, camera module and electronic equipment |
| EP4369072A4 (en) * | 2021-11-12 | 2024-11-27 | Samsung Electronics Co., Ltd. | LENS ARRANGEMENT AND ELECTRONIC DEVICE THEREOF |
| CN114815181B (en) * | 2022-04-19 | 2023-09-05 | 江西晶超光学有限公司 | Optical system, lens module and electronic equipment |
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| CN213659084U (en) * | 2020-11-30 | 2021-07-09 | 中山联合光电研究院有限公司 | Telescopic three-group continuous zooming optical lens, imaging assembly and mobile phone |
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| CN213659084U (en) * | 2020-11-30 | 2021-07-09 | 中山联合光电研究院有限公司 | Telescopic three-group continuous zooming optical lens, imaging assembly and mobile phone |
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