CN114079687B - A mobile terminal with built-in anamorphic lens - Google Patents
A mobile terminal with built-in anamorphic lens Download PDFInfo
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- CN114079687B CN114079687B CN202011070143.1A CN202011070143A CN114079687B CN 114079687 B CN114079687 B CN 114079687B CN 202011070143 A CN202011070143 A CN 202011070143A CN 114079687 B CN114079687 B CN 114079687B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
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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
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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
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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
- G02B13/0075—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element having an element with variable optical properties
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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
- G02B13/08—Anamorphotic objectives
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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
- G02B13/08—Anamorphotic objectives
- G02B13/10—Anamorphotic objectives involving prisms
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/7243—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages
- H04M1/72439—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages for image or video messaging
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/725—Cordless telephones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
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Abstract
本发明公开了一种具有内置变形镜头的移动终端，所述移动终端上设有宽荧幕变形镜头；所述宽荧幕变形镜头包括柱面透镜组和球面透镜组，所述柱面透镜组至少包括一组负光焦度柱面透镜及一组正光焦度柱面透镜。在移动终端设置宽荧幕变形镜头，宽荧幕变形镜头中柱面透镜的光学特性，可以将水平进入的入射光线进行“压缩”，而垂直方向进入的入射光线保持不变，因而宽荧幕变形镜头可以将宽荧幕的画面压缩到标准的画面区域内，宽荧幕变形镜头拍摄到的被压缩画面经过图像矫正模块变形矫正后，可以得到宽荧幕图片和视频，满足使用者对移动终端宽荧幕拍摄的需求。
The present invention discloses a mobile terminal with a built-in anamorphic lens, wherein the mobile terminal is provided with a wide-screen anamorphic lens; the wide-screen anamorphic lens comprises a cylindrical lens group and a spherical lens group, wherein the cylindrical lens group comprises at least a group of negative optical power cylindrical lenses and a group of positive optical power cylindrical lenses. The wide-screen anamorphic lens is provided in the mobile terminal, and the optical characteristics of the cylindrical lens in the wide-screen anamorphic lens can "compress" the incident light entering horizontally, while the incident light entering vertically remains unchanged, so the wide-screen anamorphic lens can compress the wide-screen image into a standard image area, and the compressed image captured by the wide-screen anamorphic lens can be distorted and corrected by an image correction module to obtain a wide-screen picture and video, thereby satisfying the user's demand for wide-screen shooting of the mobile terminal.
Description
Technical Field
The invention relates to the technical field of mobile phone lenses, in particular to a mobile terminal with a built-in deformed lens.
Background
The number of built-in cameras of the mobile phone is increasing, and the mainstream flagship mobile phones on the market are built-in wide-angle cameras, ultra-wide-angle cameras, long-focus cameras and micro-distance cameras. With the development of future technologies and demands, it is a great demand for simply and quickly taking wide-screen pictures and videos by using mobile phones, and at present, mobile phone software and hardware cannot be realized.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that a lens built in a mobile phone in the prior art cannot realize a wide screen shooting function, so as to provide the mobile terminal with the built-in deformed lens.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the mobile terminal with the built-in deformed lens is provided with the deformed wide-screen lens, the deformed wide-screen lens comprises a cylindrical lens group and a spherical lens group, and the cylindrical lens group at least comprises a group of negative-power cylindrical lenses and a group of positive-power cylindrical lenses.
Further, the cylindrical lens group and the spherical lens group are disposed in order from the object side to the image side along the optical axis.
Further, the cylindrical lens group comprises a first lens, a second lens and a third lens which are sequentially arranged from an object side to an image side along an optical axis, wherein the first lens and the second lens are negative-power cylindrical lenses, and the third lens is a positive-power cylindrical lens.
Further, the spherical lens group includes at least four aspherical lenses.
Further, the spherical lens group comprises a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged from the object side to the image side along the optical axis, wherein the fourth lens, the fifth lens, the sixth lens and the seventh lens are even-order aspheric lenses.
Further, a refractive element is disposed between the cylindrical lens group and the spherical lens group, and the refractive element is located on an optical path of an incident light beam incident through the cylindrical lens group and bends the incident light beam to the spherical lens group.
Further, the mechanical center line of the cylindrical lens group and the mechanical center line of the spherical lens group are perpendicular to each other.
Further, the refractive element is a prism, a plane mirror or a pentaprism.
Further, the deformation coefficient of the wide screen deformation lens ranges from 1.33 to 2.0.
Further, the thickness of the wide screen anamorphic lens is not more than 12mm.
Further, the wide screen anamorphic lens is mounted on the mobile terminal in an embedded manner.
Further, the mobile terminal is a mobile phone or a tablet computer.
The technical scheme of the invention has the following advantages:
1. According to the mobile terminal with the built-in deformable lens, the small wide screen deformable lens is arranged on the mobile terminal, by utilizing the optical characteristics of the cylindrical lens group consisting of at least one group of negative-power cylindrical lenses and one group of positive-power cylindrical lenses in the wide screen deformable lens, incident light entering the cylindrical lens group horizontally can be compressed, and incident light entering the cylindrical lens group vertically can be kept unchanged, so that a picture of a wide screen can be compressed into a standard picture area by the wide screen deformable lens, and a compressed picture shot by the wide screen deformable lens can be subjected to deformation correction by the image correction module to obtain a wide screen picture and a video, so that the requirement of a user on wide screen shooting of the mobile terminal is met.
2. The mobile terminal with the built-in deformable lens provided by the invention has the advantages that the horizontally-entering incident light rays are compressed by utilizing the optical characteristics of the cylindrical lens group consisting of the three cylindrical lenses, the vertically-entering incident light rays are kept unchanged, and the incident light rays are comprehensively corrected by the rear spherical lens group, so that the angle of view of the lens for horizontal shooting is increased, the aspect ratio of the actually shot picture is increased, and the functions of wide screen photos and videos are realized.
3. According to the mobile terminal with the built-in deformable lens, the refractive element is arranged between the cylindrical lens group and the spherical lens group of the wide-screen deformable lens, the direction of a light path can be changed by the refractive element, and the cylindrical lens group and the spherical lens group can be distributed in a nonlinear mode, such as a periscope type L shape, so that the wide-screen deformable lens can be mounted on the mobile terminal.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic back view of a mobile phone with an embedded wide screen anamorphic lens according to an embodiment of the invention;
FIG. 2 is a cross-sectional view of a side of a mobile phone with an embedded wide screen anamorphic lens according to an embodiment of the invention;
FIG. 3 is a schematic view of a lens assembly according to a first embodiment of the present invention;
FIG. 4 is a schematic view of a lens assembly according to a first embodiment of the present invention;
FIG. 5 is a graph showing the optical distortion curves of a lens assembly according to a first embodiment of the present invention, wherein the abscissa represents the distortion percentage and the ordinate represents the field angle;
fig. 6 is a diagram showing a MTF (Modulation Transfer Function) transfer function curve of a lens group according to a first embodiment of the present invention, in which the abscissa represents a spatial frequency and the ordinate represents an MTF value.
The reference numerals indicate 100, a mobile terminal, 200, a wide screen deformation lens, 210, a cylindrical lens group, 220, a spherical lens group;
p1, a first lens, P2, a second lens, P3, a third lens, PM, a refractive element, P4, a fourth lens, P5, a fifth lens, P6, a sixth lens, P7, a seventh lens;
1. An object side surface of the first lens element, 2, an image side surface of the first lens element, 3, an object side surface of the second lens element, 4, an image side surface of the second lens element, 5, an image side surface of the third lens element, 6, a light incident surface of the refractive element, 7, a light emergent surface of the refractive element, 8, an object side surface of the fourth lens element, 9, an image side surface of the fourth lens element, 10, an aperture, 11, an object side surface of the fifth lens element, 12, an image side surface of the fifth lens element, 13, an object side surface of the sixth lens element, 14, an image side surface of the sixth lens element, 15, an object side surface of the seventh lens element, 16, an image side surface of the seventh lens element.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
As shown in fig. 1 and 2, a mobile terminal with a built-in anamorphic lens is provided, in which a small-sized wide-screen anamorphic lens 200 is provided on the mobile terminal 100, and the wide-screen anamorphic lens 200 has a function of photographing an extrusion anamorphic picture. The wide-screen anamorphic lens 200 may be mounted on the mobile terminal in an embedded structure, for example, a groove is disposed on the mobile terminal 100, and the lens module including the wide-screen anamorphic lens is integrally embedded and fixed on the groove. In other embodiments, the lens module including the wide-screen deformable lens may be further rotatably connected to the mobile terminal through a rotation mechanism, the rotation mechanism may specifically rotate a pin, the lens module including the wide-screen deformable lens is rotatably connected to the rotation pin, at least one state of the lens module is built-in to the mobile terminal during rotation, and the built-in of the lens module may be understood as that all or a part of the lens module extends into the mobile terminal, or that after the lens module is mounted to the mobile terminal, the lens module cannot be detached from the mobile terminal in other manners than a destructive detachment manner, so as to be different from the lens module mounted by adopting the external hanging structure.
In the deformed lens of the wide screen, the definition of the wide screen means that the aspect ratio of the photographed image is larger than the aspect ratio of the current high-definition television screen by 16:9, for example, the aspect ratio of the photographed image in the deformed lens is 2.7:1, namely the deformed lens of the wide screen. The deformation coefficient of the wide-screen deformation lens ranges from 1.33 to 2.0, for example, the deformation coefficient can be 1.33, 1.5, 1.8, 2.0, and the like.
Referring to fig. 3 and 4, in the present embodiment, the wide-screen anamorphic lens includes a cylindrical lens group 210, a spherical lens group 220, and a refractive element PM sequentially disposed from an object side to an image side, where the cylindrical lens group 210 includes at least one group of negative-power cylindrical lenses and one group of positive-power cylindrical lenses. By utilizing the optical characteristics of the cylindrical lens group consisting of at least one group of negative-power cylindrical lenses and one group of positive-power cylindrical lenses, the incident light entering the cylindrical lens group 210 horizontally can be compressed, and the incident light entering the cylindrical lens group 210 vertically can be kept unchanged, so that the wide-screen deformed lens can compress the picture of the wide screen into a standard picture area, and the compressed picture shot by the wide-screen deformed lens can be restored to obtain a wide-screen picture and video after being deformed and corrected by the image correction module, thereby meeting the requirements of users for wide-screen shooting of the mobile terminal.
The cylindrical lens is generally cylindrical or semi-cylindrical in overall shape, and is understood to be formed by longitudinally cutting a portion of a cylindrical glass body. The axis of the cylindrical lens is the axis of the cylindrical glass body, the cylindrical lens comprises a cylindrical surface and a plane, the cylindrical surface of the cylindrical lens is a parallel surface in the direction parallel to the axis, and is a circular surface in the direction perpendicular to the axis. The direction of the cylindrical lens parallel to the axis is the axial meridian direction, the direction of the cylindrical lens perpendicular to the axis is the refractive power meridian direction, the radius of the cylindrical lens on the axial meridian direction and the refractive power meridian are different, so that the cylindrical lens has different magnifications on the axial meridian and the refractive power meridian, according to the characteristics of the cylindrical lens, the incident light entering the cylindrical lens horizontally can be compressed, and the incident light entering the cylindrical lens vertically can be kept unchanged, so that a wide picture can be compressed to a standard picture area to be taken by the lens.
In this embodiment, the mobile terminal may be a mobile electronic terminal such as a mobile phone or a tablet computer.
In this embodiment, as shown in fig. 3 and 4, the optical schematic diagram and the optical path diagram of the wide-screen anamorphic lens are shown, the wide-screen anamorphic lens includes a cylindrical lens group 210, a refractive element PM, and a spherical lens group 220 sequentially disposed from the object side to the image side, the refractive element PM is located on the optical path of the incident light beam incident through the cylindrical lens group 210 and refractive the incident light beam to the spherical lens group 220, and the mechanical center line of the cylindrical lens group 210 and the mechanical center line of the spherical lens group 220 are perpendicular to each other. In other embodiments, refractive element PM may also be located between multiple lens combinations in a cylindrical lens group or between multiple lens combinations in a spherical lens group.
In the present embodiment, the cylindrical lens group is composed of three cylindrical lenses, the refractive element PM is any one of a plane mirror, a prism or a pentaprism, and the spherical lens group is composed of four aspherical lenses. The wide screen deformation lens arranged in the structural form has the visual effects of horizontal wiredrawing and elliptical out-of-focus light spots besides the effect of horizontal compression deformation of the shot image, wherein the horizontal wiredrawing refers to the fact that a light ray extending in the horizontal direction is formed on a light source of the shot image, and the thickness of the light ray is related to the shooting distance, the light intensity of the light source and the deformation coefficient of the wide screen deformation lens. It will be understood that the number of cylindrical lenses constituting the cylindrical lens group may be four or more, and the number of aspherical lenses constituting the spherical lens group may be four or more, so long as the cylindrical lenses constituting the cylindrical lens group can "compress" incident light entering horizontally, while the incident light entering vertically remains unchanged, the spherical lenses constituting the spherical lens group can comprehensively correct the incident light, thereby increasing the angle of view of the lens for horizontal photographing, increasing the aspect ratio of the actually photographed image, and obtaining wide screen video or photo without sacrificing pixels.
In this embodiment, the cylindrical lens group includes a first lens P1, a second lens P2, and a third lens P3 disposed in order from the object side to the image side along the optical axis, the first lens P1 and the second lens P2 being negative power cylindrical lenses, and the third lens P3 being positive power cylindrical lenses. The spherical lens group comprises a fourth lens P4, a fifth lens P5, a sixth lens P6 and a seventh lens P7 which are sequentially arranged from the object side to the image side along the optical axis, wherein the fourth lens P4, the fifth lens P5, the sixth lens P6 and the seventh lens P7 are even-order aspheric lenses. The aspherical coefficient of the aspherical lens satisfies the following equation:
Z＝cy 2/[1+{1－(1+k)c 2y 2}+1/2]+A4y4+A6y 6+A8y 8+A10y10
Wherein Z is aspheric sagittal height, c is aspheric paraxial curvature, y is lens caliber, k is conical coefficient, A 4 is 4 times aspheric coefficient, A 6 is 6 times aspheric coefficient, A 8 is 8 times aspheric coefficient, A 10 is 10 times aspheric coefficient.
In the present embodiment, the object-side surface and the image-side surface of the first lens element P1 are concave at the paraxial region, the object-side surface of the second lens element P2 is convex at the paraxial region, the image-side surface of the second lens element P2 is concave at the paraxial region, the image-side surface of the third lens element P3 is convex at the paraxial region, the angle between the light-incident surface of the refractive element PM and the mechanical center line of the third lens element P3 is 45 degrees, the image-side surface and the object-side surface of the fourth lens element P4 are convex at the paraxial region, the object-side surface of the fifth lens element P5 is concave at the paraxial region, the image-side surface and the object-side surface of the sixth lens element P6 are convex at the paraxial region, the object-side surface of the seventh lens element P7 is convex at the paraxial region, and the object-side surface and the image-side surface of the seventh lens element P7 have a curvature point at the off-axis region.
The thickness of the wide screen deformation lens is not more than 12mm. In this embodiment, the thickness of the cylindrical lens group along the optical axis is 5.50mm, the thickness of the spherical lens group along the optical axis is 5.20mm, and the thickness of the refractive element PM along the optical axis is 2.40mm. The whole size of the wide screen deformation lens is smaller, the mechanical center line of the cylindrical lens group is vertical to the mechanical center line of the spherical lens group, and embedded installation of the wide screen deformation lens can be realized on a mobile terminal with a thinner thickness. Of course, the dimensions of the cylindrical lens group, the spherical lens group and the refractive element PM may also be scaled down appropriately.
The parameters of each lens in this example are listed below:
Cylindrical aspherical coefficient:
1、K=-1.1411,A4=9.0e－4,A6＝6.37e－5,A8＝2.5772e－6,A10＝－7.20396e－7;
2、K=-1.6136,A4=1.9e－3,A6＝2.00e－4,A8＝5.01650e－5,A10＝－6.30190e－6;
5、K=-3.8613,A4=-3.0e－4,A6＝－1.00e－4,A8＝5.6852e－6;
aspheric coefficients:
8、K=-0.3923,A4=8.2e－3,A6＝4.00e－4,A8＝9.000e－4,A10＝－5.400e－3;
9、K=4.9815,A4=1.87e－2,A6＝－5.1e－3,A8＝－1.07e－2,A10＝3.60e－3;
11、K=-4.9919,A4=-3.18e－2,A6＝5.8e－3,A8＝－1.42e－2,A10＝1.27e－2;
12、K=-2.511,A4=4.8448e－5,A6＝1.99e－2,A8＝－5.5e－3,A10＝7.5e－3;
13、K=0.8828,A4=-9.1e－3,A6＝7.0e－4,A8＝－7.0e－4,A10＝4.0e－4;
14、K=1.3393,A4=-4.1e－2,A6＝2.69e－2,A8＝－1.45e－2,A10＝2.8e－3;
15、K=4.9988,A4=-3.671e－1,A6＝1.166e－1,A8＝－1.60e－2,A10＝－4.90e－3;
16、K=-4.8512,A4=-1.256e－1,A6＝5.34e－2,A8＝－1.22e－2,A10＝7.0e－4;
where k is a conic coefficient, A4 th order aspheric coefficient, A6 th order aspheric coefficient, A8 th order aspheric coefficient, a10 th order aspheric coefficient.
Fig. 5 is a graph of optical distortion of the lens assembly in the first embodiment, in which "img Ht" is the image height, and the english full name is IMAGE HEIGHT in fig. 3, and fig. 6 is a graph of transfer function (optical transfer function) of the lens assembly MTF (Modulation Transfer Function) in the first embodiment, which can comprehensively reflect the imaging quality of the system, and the smoother the curve shape, the higher the height relative to the X-axis, the better the imaging quality of the system, and the higher the definition of the lens.
Example two
The difference from the first embodiment is that the positions of the cylindrical lens group and the spherical lens group are interchanged, the spherical lens group composed of four aspherical lenses is used as a front lens group, and the cylindrical lens group composed of three cylindrical lenses is used as a rear lens group; compared with the wide screen deformation lens in the structural arrangement of the embodiment, the wide screen deformation lens in the structural arrangement still has the function of image extrusion deformation shooting, but the shot images lack the visual effects of horizontal wiredrawing and elliptical out-of-focus light spots.
Example III
The difference from the first embodiment is that the wide-screen anamorphic lens includes two cylindrical lens groups and one spherical lens group, and the first cylindrical lens group, the spherical lens group, and the second cylindrical lens group are sequentially arranged from the object side to the image side along the optical axis. The wide screen deformation lens in the arrangement form not only has the effect of horizontal compression deformation of pictures, but also has the visual effects of horizontal wiredrawing and elliptical out-of-focus light spots, and the optical effect is the same as that of the embodiment.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (10)
1. The mobile terminal is characterized in that the mobile terminal is provided with a wide screen deformation lens, wherein the wide screen deformation lens comprises a cylindrical lens group and a spherical lens group, and the cylindrical lens group at least comprises a group of negative focal power cylindrical lenses and a group of positive focal power cylindrical lenses;
The cylindrical lens group and the spherical lens group are sequentially arranged from the object side to the image side along the optical axis;
and a refractive element is arranged between the cylindrical lens group and the spherical lens group, and is positioned on the optical path of the incident light rays entering through the cylindrical lens group and used for refracting the incident light rays to the spherical lens group.
2. The mobile terminal with built-in anamorphic lens of claim 1, wherein the cylindrical lens group comprises a first lens, a second lens, and a third lens disposed in order from an object side to an image side along an optical axis, the first lens and the second lens being negative power cylindrical lenses, the third lens being positive power cylindrical lenses.
3. The mobile terminal with built-in anamorphic lens of claim 1, wherein the spherical lens group comprises at least four aspheric lenses.
4. The mobile terminal with built-in anamorphic lens according to claim 3, wherein the spherical lens group comprises a fourth lens, a fifth lens, a sixth lens and a seventh lens disposed in order from the object side to the image side along the optical axis, wherein the fourth lens, the fifth lens, the sixth lens and the seventh lens are even-order aspheric lenses.
5. The mobile terminal with built-in anamorphic lens of claim 1, wherein the mechanical center line of the cylindrical lens group and the mechanical center line of the spherical lens group are perpendicular to each other.
6. The mobile terminal with built-in anamorphic lens of claim 1, wherein the refractive element is a prism or a plane mirror or a pentaprism.
7. The mobile terminal with built-in anamorphic lens of claim 1, wherein the wide screen anamorphic lens has a deformation coefficient in the range of 1.33 to 2.0.
8. The mobile terminal with built-in anamorphic lens of claim 1, wherein the wide screen anamorphic lens has a thickness of no more than 12mm.
9. The mobile terminal with built-in anamorphic lens of claim 1, wherein the wide screen anamorphic lens is mounted inline on the mobile terminal.
10. The mobile terminal with built-in anamorphic lens of claim 1, wherein the mobile terminal is a cell phone or tablet computer.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/120801 WO2022032855A1 (en) | 2020-08-14 | 2020-10-14 | Mobile terminal having built-in anamorphic lens |
| JP2020570003A JP2022537467A (en) | 2020-08-14 | 2020-10-14 | A mobile device with a built-in anamorphic lens |
| EP20815704.0A EP3975538A1 (en) | 2020-08-14 | 2020-10-14 | Mobile terminal having built-in anamorphic lens |
| US17/101,219 US11249288B2 (en) | 2019-09-26 | 2020-11-23 | Mobile terminal with a built-in anamorphic lens |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010822456 | 2020-08-14 | ||
| CN2020108224561 | 2020-08-14 |
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| CN114079687A CN114079687A (en) | 2022-02-22 |
| CN114079687B true CN114079687B (en) | 2025-02-07 |
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| CN202011070143.1A Active CN114079687B (en) | 2019-09-26 | 2020-09-30 | A mobile terminal with built-in anamorphic lens |
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| CN (1) | CN114079687B (en) |
| WO (1) | WO2022032729A1 (en) |
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| CN114967057B (en) * | 2022-06-06 | 2024-06-11 | 浙江舜宇光学有限公司 | Optical imaging lens group |
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| CN1780363A (en) * | 2004-11-19 | 2006-05-31 | 鸿富锦精密工业（深圳）有限公司 | thin digital camera |
| CN210835410U (en) * | 2019-11-27 | 2020-06-23 | 广东思锐光学股份有限公司 | Large-aperture anamorphic lens |
| CN212305404U (en) * | 2020-08-14 | 2021-01-05 | 广东思锐光学股份有限公司 | A mobile terminal with built-in anamorphic lens |
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| JP2006064958A (en) * | 2004-08-26 | 2006-03-09 | Canon Inc | Imaging apparatus |
| JP2006262030A (en) * | 2005-03-16 | 2006-09-28 | Fuji Xerox Co Ltd | Angle of view adjusting apparatus, camera system, and angle of view adjusting method |
| JP2010276755A (en) * | 2009-05-27 | 2010-12-09 | Konica Minolta Opto Inc | Super-wide angle anamorphic lens |
| ES2906619T3 (en) * | 2015-04-01 | 2022-04-19 | Owl Labs Inc | Compositing and scaling of angularly separated subscenes |
| US11082596B2 (en) * | 2018-03-25 | 2021-08-03 | Moment Inc | Anamorphic optical assembly for mobile camera-enabled device and device case |
| CN208588856U (en) * | 2018-06-15 | 2019-03-08 | 巩少斌 | A kind of additional deformation camera lens of mobile lens |
| CN109164557B (en) * | 2018-09-30 | 2020-01-21 | 江西联创电子有限公司 | Wide-angle lens and panoramic camera system |
| CN110716290A (en) * | 2019-09-26 | 2020-01-21 | 广东思锐光学股份有限公司 | an anamorphic lens |
| CN110794556B (en) * | 2019-11-01 | 2021-09-14 | 江西联创电子有限公司 | Wide-angle lens and panoramic camera system |
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2020
- 2020-08-27 WO PCT/CN2020/111564 patent/WO2022032729A1/en active Application Filing
- 2020-09-30 CN CN202011070143.1A patent/CN114079687B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1780363A (en) * | 2004-11-19 | 2006-05-31 | 鸿富锦精密工业（深圳）有限公司 | thin digital camera |
| CN210835410U (en) * | 2019-11-27 | 2020-06-23 | 广东思锐光学股份有限公司 | Large-aperture anamorphic lens |
| CN212305404U (en) * | 2020-08-14 | 2021-01-05 | 广东思锐光学股份有限公司 | A mobile terminal with built-in anamorphic lens |
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| WO2022032729A1 (en) | 2022-02-17 |
| CN114079687A (en) | 2022-02-22 |
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