WO2023274041A1 - 一种变焦镜头、摄像头模组及移动终端 - Google Patents
一种变焦镜头、摄像头模组及移动终端 Download PDFInfo
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- WO2023274041A1 WO2023274041A1 PCT/CN2022/100934 CN2022100934W WO2023274041A1 WO 2023274041 A1 WO2023274041 A1 WO 2023274041A1 CN 2022100934 W CN2022100934 W CN 2022100934W WO 2023274041 A1 WO2023274041 A1 WO 2023274041A1
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- Prior art keywords
- lens
- zoom lens
- lens group
- zoom
- light
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- 230000003287 optical effect Effects 0.000 claims abstract description 54
- 239000005304 optical glass Substances 0.000 claims description 20
- 230000007704 transition Effects 0.000 claims 1
- 230000004075 alteration Effects 0.000 abstract description 27
- 238000010586 diagram Methods 0.000 description 83
- 238000003384 imaging method Methods 0.000 description 38
- 230000000694 effects Effects 0.000 description 33
- 201000009310 astigmatism Diseases 0.000 description 30
- 238000004088 simulation Methods 0.000 description 20
- 239000000463 material Substances 0.000 description 14
- 238000000926 separation method Methods 0.000 description 10
- 239000007787 solid Substances 0.000 description 10
- 239000005357 flat glass Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Classifications
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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
- G02B15/142—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 two groups only
- G02B15/1421—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 two groups only the first group being positive
-
- 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
- G02B13/0035—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 three lenses
-
- 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
- G02B13/004—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 four lenses
-
- 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
-
- 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
- G02B13/009—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras having zoom function
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
-
- 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
- G02B15/16—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/20—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having an additional movable lens or lens group for varying the objective focal length
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/60—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having five components only
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
-
- 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
Definitions
- the present application relates to the technical field of photography, and in particular to a zoom lens, a camera module and a mobile terminal.
- the camera as one of the important means of information acquisition, is widely used in portable devices such as mobile phones and tablets.
- the camera needs to achieve high-quality shooting effects in different scenes at the same time.
- the telephoto lens (the focal length becomes longer) can shoot distant objects, while providing high magnification, it also ensures good imaging quality.
- the macro lens can show a strong ability in shooting close-range macro scenes, but the quality of the captured images in shooting long-distance scenes has always been poor.
- small portable devices such as mobile phones and tablets need to have a large space for accommodating cameras.
- the current small portable devices such as mobile phones and tablets are affected by the size, resulting in camera assembly
- the space is relatively small, and the assembled lens cannot take into account both telephoto and macro.
- the application provides a zoom lens, a camera module and a mobile terminal, which are used to improve the shooting effect of the mobile terminal.
- a zoom lens in the first aspect, includes a first lens group and a second lens group arranged from the object side to the image side: the first lens group is fixed, and the second lens group can move along the light Axial sliding; wherein, the first lens group has positive refractive power; the second lens group has negative refractive power; wherein, the focal length EFLG1 of the first lens group is equal to the focal length EFLG2 of the second lens group
- the ratio of is satisfied: 0.4 ⁇
- the first lens group includes at least one lens, and the lens closest to the object side in the first lens group has positive refractive power. Ensure that the zoom lens has a good imaging effect.
- the lens closest to the object side in the first lens group is a lens made of optical glass. Ensure that the zoom lens has a good imaging effect.
- the first lens group includes a first lens and a second lens arranged from the object side to the image side; the second lens has negative refractive power. Ensure that the zoom lens has a good imaging effect.
- the zoom lens when the zoom lens changes from the telephoto state to the macro state, the second lens group moves from the object side to the image side, and the second lens group
- the ratio of the moving stroke ⁇ to the total optical length TTL of the zoom lens satisfies ⁇ /TTL ⁇ 0.4. Ensure that the zoom lens meets the needs of long-distance and macro shooting in a small size.
- the moving stroke of the second lens group is ⁇ 4 mm. Ensuring miniaturization of the zoom lens.
- the second lens group includes at least one lens; wherein, the surface of the lens closest to the object side in the second lens group facing the image side is a concave surface. Ensure that the zoom lens has a good imaging effect.
- the aperture of the zoom lens satisfies 2.8>F#. To ensure that enough light can enter the zoom lens to ensure the imaging effect.
- the second lens group moves to the object side, and the focusing distance ODt of the zoom lens satisfies: 1m ⁇ ODt ⁇ . Provides better telephoto effects.
- the second lens group moves to the image side, and the focusing distance Odm of the zoom lens satisfies: 0.03m ⁇ Odm ⁇ 0.2m. Provide better macro shooting effect.
- the macro vertical axis magnification of the zoom lens is 0.3 ⁇ 0.7.
- a prism or a mirror is also included, wherein,
- the prism or mirror is located on the object side of the first lens group
- the prism or mirror is used to reflect light to the first lens group.
- a zoom lens in a second aspect, includes a first lens group and a second lens group arranged from the object side to the image side: the second lens group is fixed, and the first lens group can be arranged along the optical axis.
- Direction sliding wherein, the first lens group has positive refractive power; the second lens group has negative refractive power; wherein, the focal length EFLG1 of the first lens group is equal to the focal length EFLG2 of the second lens group
- the ratio satisfies: 0.4 ⁇
- the first lens group includes at least one lens, and the lens closest to the object side in the first lens group has positive refractive power. Ensure that the zoom lens has a good imaging effect.
- the lens closest to the object side in the first lens group is a lens made of optical glass. Ensure that the zoom lens has a good imaging effect.
- the first lens group includes a first lens and a second lens arranged from the object side to the image side; the second lens has negative refractive power. Ensure that the zoom lens has a good imaging effect.
- the zoom lens when the zoom lens changes from the telephoto state to the macro state, the second lens group moves from the object side to the image side, and the second lens group
- the ratio of the moving stroke ⁇ to the total optical length TTL of the zoom lens satisfies ⁇ /TTL ⁇ 0.4. Ensure that the zoom lens meets the needs of long-distance and macro shooting in a small size.
- the moving stroke of the second lens group is ⁇ 4mm. Ensuring miniaturization of the zoom lens.
- the second lens group includes at least one lens; wherein, the surface of the lens closest to the object side in the second lens group facing the image side is a concave surface. Ensure that the zoom lens has a good imaging effect.
- the aperture of the zoom lens satisfies 2.8>F#. To ensure that enough light can enter the zoom lens to ensure the imaging effect.
- the second lens group moves to the object side, and the focusing distance ODt of the zoom lens satisfies: 1m ⁇ ODt ⁇ . Provides better telephoto effects.
- the second lens group moves to the image side, and the focusing distance Odm of the zoom lens satisfies: 0.03m ⁇ Odm ⁇ 0.2m. Provide better macro shooting effect.
- the macro vertical axis magnification of the zoom lens is 0.3 ⁇ 0.7.
- a camera module in a third aspect, includes a photosensitive element and the zoom lens described in any one of the above, and the photosensitive element is located on the image side of the zoom lens, wherein the zoom lens uses To receive the light reflected by the object to be photographed and project it to the photosensitive element, and the photosensitive element is used to convert the light into an image signal.
- the zoom lens uses To receive the light reflected by the object to be photographed and project it to the photosensitive element, and the photosensitive element is used to convert the light into an image signal.
- a mobile terminal includes a casing, and the zoom lens described in any one of the above-mentioned casings is arranged in the casing.
- the mobile terminal includes a casing, and the zoom lens described in any one of the above-mentioned casings is arranged in the casing.
- Fig. 1 is the application schematic diagram of zoom lens in the prior art
- FIG. 2 is a schematic structural diagram of a zoom lens provided in an embodiment of the present application.
- FIG. 3 is a zoom schematic diagram of a zoom lens provided in an embodiment of the present application.
- FIG. 4 is a schematic structural diagram of a first zoom lens provided in an embodiment of the present application.
- FIG. 5 is a spherical chromatic aberration diagram of the first zoom lens provided in the embodiment of the present application in a long-distance state;
- FIG. 6 is an astigmatism diagram of the first zoom lens provided in the embodiment of the present application in a telephoto state
- FIG. 7 is a distortion diagram of the first zoom lens provided in the embodiment of the present application in a long-distance state
- FIG. 8 is a spherical chromatic aberration diagram of the first zoom lens provided in the embodiment of the present application in a macro state;
- FIG. 9 is an astigmatism diagram of the first zoom lens provided in the embodiment of the present application in a macro state
- FIG. 10 is a distortion diagram of the first zoom lens provided in the embodiment of the present application in a macro state
- FIG. 11 is a schematic structural diagram of a second zoom lens provided in an embodiment of the present application.
- FIG. 12 is a spherical chromatic aberration diagram of the second zoom lens provided in the embodiment of the present application in the long-distance state;
- FIG. 13 is an astigmatism diagram of the second zoom lens provided in the embodiment of the present application in the telephoto state
- FIG. 14 is a distortion diagram of the second zoom lens provided in the embodiment of the present application in a long-distance state
- FIG. 15 is a spherical chromatic aberration diagram of the second zoom lens provided in the embodiment of the present application under the macro state;
- FIG. 16 is an astigmatism diagram of the second zoom lens provided in the embodiment of the present application in a macro state
- FIG. 17 is a distortion diagram of the second zoom lens provided in the embodiment of the present application in a macro state
- FIG. 18 is a schematic structural diagram of a third zoom lens provided in an embodiment of the present application.
- FIG. 19 is a spherical chromatic aberration diagram of the third zoom lens provided in the embodiment of the present application in the long-distance state;
- FIG. 20 is an astigmatism diagram of the third zoom lens provided in the embodiment of the present application in the telephoto state
- FIG. 21 is a distortion diagram of the third zoom lens provided in the embodiment of the present application in a long-distance state
- Fig. 22 is a spherical chromatic aberration diagram of the third zoom lens in the macro state provided by the embodiment of the present application;
- FIG. 23 is an astigmatism diagram of the third zoom lens provided in the embodiment of the present application in a macro state
- FIG. 24 is a distortion diagram of the third zoom lens provided in the embodiment of the present application in a macro state
- FIG. 25 is a schematic structural diagram of a fourth zoom lens provided by an embodiment of the present application.
- Fig. 26 is a spherical chromatic aberration diagram of the fourth zoom lens provided in the embodiment of the present application under the telephoto state;
- Fig. 27 is an astigmatism diagram of the fourth zoom lens provided in the embodiment of the present application under the telephoto state;
- FIG. 28 is a distortion diagram of the fourth zoom lens provided in the embodiment of the present application in a long-distance state
- Fig. 29 is a spherical chromatic aberration diagram of the fourth zoom lens provided in the embodiment of the present application in the macro state;
- FIG. 30 is an astigmatism diagram of the fourth zoom lens provided in the embodiment of the present application in a macro state
- FIG. 31 is a distortion diagram of the fourth zoom lens provided in the embodiment of the present application in a macro state
- FIG. 32 is a schematic structural diagram of a fifth zoom lens provided by an embodiment of the present application.
- Fig. 33 is a spherical chromatic aberration diagram of the fifth zoom lens provided in the embodiment of the present application under the telephoto state;
- Fig. 34 is an astigmatism diagram of the fifth zoom lens provided in the embodiment of the present application in the telephoto state;
- Fig. 35 is a distortion diagram of the fifth zoom lens provided in the embodiment of the present application in the telephoto state
- Fig. 36 is a spherical chromatic aberration diagram of the fifth zoom lens provided in the embodiment of the present application in the macro state;
- FIG. 37 is an astigmatism diagram of the fifth zoom lens provided in the embodiment of the present application under the macro state
- FIG. 38 is a distortion diagram of the fifth zoom lens provided in the embodiment of the present application in a macro state
- FIG. 39 shows a schematic structural diagram of a sixth zoom lens provided by an embodiment of the present application.
- FIG. 40 shows a schematic diagram of an application scenario of a zoom lens provided in an embodiment of the present application in a mobile phone.
- F# F-number F number/aperture
- F# is the relative value obtained from the focal length of the lens/lens light diameter (the reciprocal of the relative aperture), the smaller the aperture F value, the more light entering in the same unit time.
- EFL Effective Focal Length, effective focal length
- Total Track Length refers to the distance from the first surface of the lens in the lens to the image surface, also known as the total optical length.
- IH Image Height, the radius of the imaging circle, half image height
- CCD Charge-couplerevice, charge-coupled device
- CMOS Complementary Metal Oxide Semiconductor, Complementary Metal Oxide Semiconductor
- OD Object distance
- the distance from the subject to the optical center of the lens can be approximated by the distance from the subject to the front surface of the first lens
- Lens Group lens group, a lens combination composed of several relatively fixed lenses
- the lens or lens group has a positive focal length and has the effect of focusing light
- Negative power a lens or lens group that has a negative focal length and diverges light rays.
- Focus distance the distance from the object to the vertex of the first lens of the lens
- Object plane the plane where the imaged object is located
- Image plane the plane on which the image of an object is located
- Aperture an entity that constrains light in an optical system
- Object side the side of the zoom lens close to the imaged object is the object side;
- Image side the side of the image formed by the zoom lens close to the object is the image side
- Movement stroke the distance that the moving lens group moves when the zoom lens changes from the telephoto state to the macro state.
- the zoom lens provided by the embodiment of the present application is applied to the camera module of the mobile terminal, and the mobile terminal can be a mobile phone , tablet, monitoring, vehicle and other portable terminal equipment.
- the zoom lens can be used to shoot and record images, and its shooting scenes include various complex and diverse shooting application scenes, such as indoor, outdoor, people, environment and other different scenes.
- the lens 201 of the camera module 200 is fixed on the housing 100 of the mobile terminal, and the photosensitive element 202 is fixed in the housing 100.
- the photosensitive element 202 converts the light signal into an electrical signal and forms an image to achieve the effect of taking pictures.
- the camera module 200 in the prior art cannot take into account the two different shooting modes of telephoto and micro-focus, so this embodiment of the present application provides a zoom lens.
- an embodiment of the present application provides a zoom lens, and the zoom lens includes a first lens group G1 and a second lens group G2 arranged from the object side to the image side.
- a diaphragm 30 may also be provided in the zoom lens, and the diaphragm 30 is located on the side of the first lens group G1 close to the object side, so as to restrict the light incident into the first lens group G1.
- the first lens group G1 has 1-3 lenses, and the first lens group G1 has positive refractive power; the first lens of the first lens group G1 has positive refractive power.
- the second lens group G2 has 1-2 lenses, and the second lens group G2 has negative refractive power.
- the first lens group G1 and the second lens group G2 can slide relative to each other along the optical axis, and the zoom lens achieves focusing by moving the first lens group G1 or the second lens group G2 along the optical axis.
- the second lens group G1 may be fixed and the first lens group G1 slides along the optical axis to achieve focusing, or the first lens group G1 may be fixed and the second lens group G2 slides along the optical axis to achieve focusing.
- Figure 3 illustrates an example in which the second lens group G2 slides relative to the first lens group G1.
- the second lens group G2 can move back and forth along the optical axis to realize the adjustment of the zoom lens. the focus.
- the zoom lens has a telephoto state and a macro state.
- the second lens group G2 When the zoom lens is in the telephoto state, the second lens group G2 is close to the object side, and at this time the zoom lens can shoot objects that are far away from the zoom lens.
- the zoom lens When the zoom lens is in a macro state, the second lens group G2 is close to the image side, and at this time, the zoom lens can shoot objects that are closer to the zoom lens.
- the focal length EFLG1 of the first lens group G1 and the focal length EFLG2 of the second lens group G2 meet the following conditions: the focal length EFLG1 of the first lens group is the same as the focal length of the second lens group
- the ratio of EFLG2 satisfies: 0.4 ⁇
- the second lens group G2 in the telephoto state, the second lens group G2 is close to the object side, and the focusing distance ODt of the zoom lens satisfies: 1m ⁇ ODt ⁇ ; in the macro state, the second lens group G2 is close to the image side, and the zoom lens
- the focus distance Odm meets: 0.03m ⁇ Odm ⁇ 0.2m.
- the first lens group G1 may include at least one lens; the first lens closest to the object side is made of optical glass, and the first lens has positive refractive power.
- the first lens group G1 includes a first lens and a second lens arranged from the object side to the image side; the first lens has a positive refractive power, and the second lens has a negative refractive power.
- the second lens group G2 includes at least one lens; wherein, the surface of the lens closest to the object side in the second lens group G2 facing the image side is a concave surface. It should be understood that the above-mentioned lenses in the first lens group G1 and the second lens group G2 may be spherical or aspheric.
- the second lens group G2 moves from the object side to the image side, and the ratio of the moving distance ⁇ of the second lens group to the total optical length TTL of the zoom lens satisfies ⁇ /TTL ⁇ 0.4.
- the movement stroke ⁇ of the second lens group is ⁇ 4 mm, for example, the movement stroke ⁇ is different distances such as 1 mm, 2 mm, 3 mm, and 4 mm.
- the aperture of the zoom lens provided in the embodiment of the present application satisfies 2.8>F#. To ensure that enough light can enter the zoom lens to ensure the imaging effect.
- the macro vertical axis magnification of the zoom lens is 0.3 ⁇ 0.7.
- FIG. 4 shows a schematic structural diagram of a first type of zoom lens provided by an embodiment of the present application.
- the zoom lens includes a first lens group G1 and a second lens group G2 arranged in sequence.
- the first lens group G1 has two lenses, which are the first lens LG11 and the second lens LG12 from the object side to the image side;
- the second lens group G2 has two lenses, and the third lens is from the object side to the image side.
- Lens LG21, fourth lens LG22 This embodiment uses the second lens group G2 to focus along the direction of the optical axis, and is suitable for macro and long-distance shooting scenes of optical lenses.
- the zoom lens may also include a filter 10 .
- the second lens group G2 is followed by a filter for correcting color deviation or a flat glass L1 for protecting the imaging photosensitive element, and the imaging sensor 20 is located at the image plane,
- the imaging sensor 20 can be a CCD or a CMOS.
- the first lens group G1 has a positive refractive power
- the second lens group G2 has a negative refractive power.
- the focal length EFLG1 of the first lens group G1 8.15 mm
- the focal length EFLG2 of the second lens group G2 ⁇ 12.45 mm.
- the ratio of the focal length EFLG1 of the first lens group G1 to the focal length EFLG2 of the second lens group G2 is
- 0.65
- the ratio of the focal length EFL of the second lens G2 to the focal length EFLG1 of the zoom lens is
- 0.86.
- the first lens group G1 includes two lenses, respectively a first lens LG11 and a second lens LG12, wherein the first lens LG11 has a positive refractive power, and the second lens LG12 has a negative refractive power.
- the material of the first lens LG11 is optical glass, specifically an optical glass convex lens; the second lens LG12 is optical glass or optical plastic.
- the second lens group G2 includes two lenses, which are respectively the third lens LG21 and the fourth lens LG22, wherein the third lens LG21 and the fourth lens LG22 can have positive or negative refractive powers, which are not mentioned here. Be specific.
- the material of the third lens LG21 and the fourth lens LG22 may be optical glass or optical plastic, which is not specifically limited in this application.
- the vertical axis magnification ⁇ 0.3.
- LG11S1 refers to the side of the first lens LG11 facing the object side
- LG11S2 refers to the side of the first lens LG11 facing the image side
- LG12S1 refers to the side of the second lens LG12 facing the object side
- LG12S2 refers to the side of the second lens LG12 facing the image side
- LG21S1 refers to the side of the third lens LG21 facing the object side
- LG21S2 refers to the side of the third lens LG21 facing the image side
- LG22S1 refers to the side of the fourth lens LG22 facing the object side
- One side LG22S2 refers to the side of the fourth lens LG22 facing the image side.
- Table 1a shows aspheric coefficients of various aspheric lenses; wherein, A4 to A30 are aspheric coefficients.
- all aspherical surface types can be defined by but not limited to the following aspheric surface formulas:
- z is the sagittal height of the aspheric surface
- r is the radial coordinate of the aspheric surface
- c is the curvature of the vertex of the aspheric surface
- K is the constant of the quadric surface
- A2, A4, ..., A30 are the coefficients of the aspheric surface.
- Table 1b is the basic parameters of the zoom lens in the long-distance state, where R is the radius of curvature, Th is the surface thickness, Nd is the material refractive index, Vd is the Abbe number of the material, and SA (Semi-Aperture) is Radial aperture, Conic is the conic coefficient, inf means infinity, Object is the object plane, Stop is the aperture 30, Sphere is the spherical surface, Asphere is the aspheric surface, and Image is the image plane.
- L1S1 means the surface of the plate glass L1 facing the object side
- L1S2 means the surface of the plate glass L1 facing the image side.
- Table 1c shows the basic parameters of the zoom lens in the macro state, where R is the radius of curvature, Th is the surface thickness, Nd is the refractive index of the material, Vd is the Abbe number of the material, SA (Semi-Aperture ) is the radial aperture, Conic is the cone factor, and inf means infinity.
- R is the radius of curvature
- Th is the surface thickness
- Nd is the refractive index of the material
- Vd is the Abbe number of the material
- SA Semi-Aperture
- Conic cone factor
- inf means infinity.
- Table 1d is the parameters of the zoom lens.
- the macro magnification ⁇ is the vertical axis magnification of the zoom lens in the macro state
- infinity F# is the aperture number of the zoom lens in the long-distance state
- EFLG1 is the focal length of the first lens group G1
- EFLG2 is the second lens
- infinity EFL is the focal length of the zoom lens in the telephoto state
- ⁇ /TTL is the ratio of the zoom stroke to the optical length.
- the zoom lens shown in FIG. 4 is used as an example for simulation.
- the specific parameters of the zoom lens can refer to Table 1a, Table 1b, Table 1c, and Table 1d.
- Table 1a Table 1a, Table 1b, Table 1c, and Table 1d.
- FIG. 5 shows a diagram of spherical aberration of the zoom lens in a telephoto state.
- the simulation is carried out by taking light of different frequencies as an example, and several common frequencies of light in imaging are illustrated in Fig. 5 .
- the five solid curves in FIG. 5 are light rays with wavelengths of 650nm, 587nm, 546nm, 486nm and 435nm respectively.
- FIG. 5 shows a diagram of spherical aberration of the zoom lens in a telephoto state.
- the simulation is carried out by taking light of different frequencies as an example, and several common frequencies of light in imaging are illustrated in Fig. 5 .
- the five solid curves in FIG. 5 are light rays with wavelengths of 650nm, 587nm, 546nm, 486nm and 435nm respectively.
- FIG. 5 shows a diagram of spherical aberration of the zoom lens in a telephoto state.
- A represents light with a wavelength of 650nm
- B represents light with a wavelength of 587nm
- C represents light with a wavelength of 546nm
- E represents light with a wavelength of 435nm.
- FIG. 6 shows an astigmatism diagram of the zoom lens in a telephoto state.
- the solid line in the astigmatism diagram represents the field curvature value of light at the central wavelength (555nm) on the meridional image plane, and the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- FIG. 7 shows a distortion diagram of the zoom lens in a telephoto state.
- the solid line in the distortion graph represents the distortion value of the central wavelength (555nm) light passing through the zoom lens. It can be seen from FIG. 7 that the distortion of the light is small, less than 2% of the image distortion threshold that can be perceived by human eyes.
- FIG. 8 shows a diagram of spherical aberration of the zoom lens in a macro state.
- the simulation is carried out by taking light of different frequencies as an example, and several common frequencies of light in imaging are illustrated in FIG. 8 .
- the five solid curves in FIG. 8 are light rays with wavelengths of 650nm, 587nm, 546nm, 486nm and 435nm respectively.
- A represents light with a wavelength of 650nm
- B represents light with a wavelength of 587nm
- C represents light with a wavelength of 546nm
- E represents light with a wavelength of 435nm.
- FIG. 9 shows an astigmatism diagram of the zoom lens in a macro state.
- the solid line in the astigmatism diagram represents the field curvature value of light at the central wavelength (555nm) on the meridional image plane, and the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- FIG. 10 shows a distortion diagram of the zoom lens in a macro state.
- the solid line in the distortion graph represents the distortion value of the central wavelength (555nm) light passing through the zoom lens. It can be seen from FIG. 10 that the distortion of the light is small, less than 2% of the image distortion threshold that can be perceived by human eyes.
- FIG. 11 shows a schematic structural diagram of a second zoom lens provided by an embodiment of the present application.
- the zoom lens includes a first lens group G1 and a second lens group G2 arranged in sequence.
- the first lens group G1 has one lens; the second lens group G2 has two lenses.
- This embodiment uses the second lens group G2 to focus along the direction of the optical axis, and is suitable for macro and long-distance shooting scenes of optical lenses.
- a diaphragm 30 may also be provided in the zoom lens, and the diaphragm 30 is located on the side of the first lens group close to the object side, so as to restrict the light incident into the first lens group G1.
- the zoom lens may also include a filter 10 .
- the second lens group G2 is followed by a filter 10 for correcting color deviation or a flat glass L1 for protecting the imaging photosensitive element, and the imaging sensor 20 is located at the image plane , the imaging sensor 20 may be a CCD or a CMOS.
- the first lens group G1 has a positive refractive power
- the second lens group G2 has a negative refractive power.
- the focal length EFLG1 of the first lens group G1 5.80 mm
- the focal length EFLG2 of the second lens group G2 ⁇ 4.75 mm.
- the ratio of the focal length EFLG1 of the first lens group G1 to the focal length EFLG2 of the second lens group G2 is
- 1.22
- the ratio of the focal length EFL of the second lens G2 to the focal length EFLG1 of the zoom lens is
- 0.4.
- the first lens group G1 includes a first lens LG11, and the first lens LG11 has positive refractive power.
- the material of the first lens LG11 is optical glass, specifically an optical glass convex lens.
- the second lens group G2 includes two lenses, namely a third lens LG21 and a fourth lens LG22, wherein the third lens LG21 and the fourth lens LG22 have negative refractive power.
- the material of the third lens LG21 and the fourth lens LG22 can be optical glass or optical plastic.
- the vertical axis magnification ⁇ 0.3.
- LG11S1 refers to the side of the first lens LG11 facing the object side
- LG11S2 refers to the side of the first lens LG11 facing the image side
- LG21S1 refers to the side of the third lens LG21 facing the object side
- LG21S2 refers to the side of the third lens LG21 facing the image side
- LG22S1 refers to the side of the fourth lens LG22 facing the object side
- LG22S2 refers to the side of the fourth lens LG22 facing the image side.
- Table 2a the aspheric coefficients of various aspheric lenses are shown in Table 2a.
- A4 to A30 are aspheric coefficients.
- z is the sagittal height of the aspheric surface
- r is the radial coordinate of the aspheric surface
- c is the curvature of the vertex of the aspheric surface
- K is the constant of the quadric surface
- A2, A4, ..., A30 are the coefficients of the aspheric surface.
- Table 2b shows the basic parameters of the zoom lens in the telephoto state.
- Table 2c shows the basic parameters of the zoom lens in the macro state.
- Table 2d shows the parameters of the zoom lens.
- the parameters of the corresponding zoom lens are shown in Table 2d.
- the zoom lens shown in FIG. 11 is used as an example for simulation.
- the specific parameters of the zoom lens can refer to Table 2a, Table 2b, Table 2c, and Table 2d.
- Table 2a Table 2a, Table 2b, Table 2c, and Table 2d.
- FIG. 12 shows a spherical aberration diagram of a zoom lens in a telephoto state.
- the simulation is performed by taking light of different frequencies as an example, and several common frequencies of light in imaging are illustrated in FIG. 12 .
- the five solid curves in FIG. 12 are light rays with wavelengths of 650nm, 587nm, 546nm, 486nm and 435nm respectively.
- A represents light with a wavelength of 650nm
- B represents light with a wavelength of 587nm
- C represents light with a wavelength of 546nm
- D represents light with a wavelength of 486m
- E represents light with a wavelength of 435nm.
- FIG. 13 shows an astigmatism diagram of the zoom lens in a telephoto state.
- the solid line in the astigmatism diagram represents the field curvature value of light at the central wavelength (555nm) on the meridional image plane, and the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane. It can be seen from Figure 13 that there are sharply focused images throughout the field of view.
- FIG. 14 shows a distortion diagram of a zoom lens in a telephoto state.
- the solid line in the distortion graph represents the distortion value of the central wavelength (555nm) light passing through the zoom lens. It can be seen from FIG. 14 that the distortion of the light is small, less than 2% of the image distortion threshold that can be perceived by human eyes.
- FIG. 15 shows a diagram of spherical aberration of the zoom lens in a macro state.
- the simulation is carried out by taking light of different frequencies as an example, and several common frequencies of light in imaging are illustrated in Fig. 15 .
- the five solid curves in FIG. 15 are light rays with wavelengths of 650nm, 587nm, 546nm, 486nm and 435nm respectively.
- A represents light with a wavelength of 650nm
- B represents light with a wavelength of 587nm
- C represents light with a wavelength of 546nm
- E represents light with a wavelength of 435nm.
- FIG. 16 shows an astigmatism diagram of the zoom lens in a macro state.
- the solid line in the astigmatism diagram represents the field curvature value of light at the central wavelength (555nm) on the meridional image plane, and the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- FIG. 17 shows a distortion diagram of a zoom lens in a macro state.
- the solid line in the distortion graph represents the distortion value of the central wavelength (555nm) light passing through the zoom lens. It can be seen from FIG. 17 that the distortion of the light is small, less than 2% of the image distortion threshold that can be perceived by human eyes.
- FIG. 18 shows a schematic structural diagram of a third zoom lens provided by an embodiment of the present application.
- the zoom lens includes a first lens group G1 and a second lens group G2 arranged in sequence.
- the first lens group G1 has two lenses; the second lens group G2 has one lens.
- This embodiment uses the second lens group G2 to focus along the direction of the optical axis, and is suitable for macro and long-distance shooting scenes of optical lenses.
- a diaphragm 30 may also be provided in the zoom lens, and the diaphragm 30 is located on the side of the first lens group close to the object side, so as to restrict the light incident into the first lens group G1.
- the zoom lens may also include a filter 10 .
- the second lens group G2 is followed by a filter 10 for correcting color deviation or a flat glass L1 for protecting the imaging photosensitive element, and the imaging sensor 20 is located at the image plane , the imaging sensor 20 may be a CCD or a CMOS.
- the first lens group G1 has a positive refractive power
- the second lens group G2 has a negative refractive power.
- the focal length EFLG1 of the first lens group G1 10.27 mm
- the focal length EFLG2 of the second lens group G2 ⁇ 16.4 mm.
- the ratio of the focal length EFLG1 of the first lens group G1 to the focal length EFLG2 of the second lens group G2 is
- 0.63
- the ratio of the focal length EFL of the second lens G2 to the focal length EFLG1 of the zoom lens is
- 0.99.
- the first lens group G1 includes a first lens LG11 and a second lens LG12, the first lens LG11 has a positive refractive power; the second lens LG12 has a negative refractive power.
- the material of the first lens LG11 is optical glass, specifically an optical glass convex lens.
- the second lens group G2 includes a third lens LG21, and the third lens LG21 may have a positive refractive power or a negative refractive power, which is not specifically limited herein.
- the material of the third lens LG21 may be optical glass or optical plastic, which is not specifically limited in this application.
- the vertical axis magnification ⁇ 0.3.
- LG11S1 refers to the side of the first lens LG11 facing the object side
- LG11S2 refers to the side of the first lens LG11 facing the image side
- LG12S1 refers to the side of the second lens LG12 facing the object side
- LG12S2 refers to the side of the second lens LG12 facing the image side
- LG21S1 refers to the side of the third lens LG21 facing the object side
- LG21S2 refers to the side of the third lens LG21 facing the image side.
- Table 3a the aspheric coefficients of various aspheric lenses are shown in Table 3a.
- A4 to A30 are aspheric coefficients.
- all aspherical surface types can be defined by but not limited to the following aspheric surface formulas:
- z is the sagittal height of the aspheric surface
- r is the radial coordinate of the aspheric surface
- c is the curvature of the vertex of the aspheric surface
- K is the quadratic surface constant
- A2, A4, A6, A8, A10, A12 are the aspheric surface coefficients.
- Table 3b shows the basic parameters of the zoom lens in the telephoto state.
- Table 3c shows the basic parameters of the zoom lens in the macro state.
- Table 3d shows the parameters of the zoom lens.
- the parameters of the corresponding zoom lens are shown in Table 3d.
- the zoom lens shown in FIG. 18 is used as an example for simulation.
- the specific parameters of the zoom lens can refer to Table 3a, Table 3b, Table 3c and Table 3d.
- the effect of the zoom lens in the simulation will be described in detail below in conjunction with the accompanying drawings.
- FIG. 19 shows a spherical aberration diagram of a zoom lens in a telephoto state.
- the simulation is performed by taking light of different frequencies as an example, and several common frequencies of light in imaging are illustrated in FIG. 19 .
- the five solid curves in FIG. 19 are light rays with wavelengths of 650nm, 587nm, 546nm, 486nm and 435nm respectively.
- A represents light with a wavelength of 650nm
- B represents light with a wavelength of 587nm
- C represents light with a wavelength of 546nm
- E represents light with a wavelength of 435nm.
- FIG. 20 shows an astigmatism diagram of a zoom lens in a telephoto state.
- the solid line in the astigmatism diagram represents the field curvature value of light at the central wavelength (555nm) on the meridional image plane, and the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- 555nm central wavelength
- dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- FIG. 21 shows a distortion diagram of a zoom lens in a telephoto state.
- the solid line in the distortion graph represents the distortion value of the central wavelength (555nm) light passing through the zoom lens. It can be seen from FIG. 21 that the distortion of the light is small, less than 2% of the image distortion threshold that can be perceived by human eyes.
- FIG. 22 shows a diagram of spherical aberration of the zoom lens in a macro state.
- the simulation is carried out by taking light of different frequencies as an example, and several common frequencies of light in imaging are illustrated in Fig. 22 .
- the five solid curves in FIG. 22 are light rays with wavelengths of 650nm, 587nm, 546nm, 486nm and 435nm respectively.
- A represents light with a wavelength of 650nm
- B represents light with a wavelength of 587nm
- C represents light with a wavelength of 546nm
- E represents light with a wavelength of 435nm.
- FIG. 23 shows an astigmatism diagram of the zoom lens in a macro state.
- the solid line in the astigmatism diagram represents the field curvature value of light at the central wavelength (555nm) on the meridional image plane, and the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- FIG. 24 shows a distortion diagram of a zoom lens in a macro state.
- the solid line in the distortion graph represents the distortion value of the central wavelength (555nm) light passing through the zoom lens. It can be seen from FIG. 24 that the distortion of the light is small, less than 2% of the image distortion threshold that can be perceived by the human eye.
- FIG. 25 shows a schematic structural diagram of a fourth zoom lens provided by an embodiment of the present application.
- the zoom lens includes a first lens group G1 and a second lens group G2 arranged in sequence.
- the first lens group G1 has three lenses; the second lens group G2 has two lenses.
- This embodiment uses the second lens group G2 to focus along the direction of the optical axis, and is suitable for macro and long-distance shooting scenes of optical lenses.
- a diaphragm 30 may also be provided in the zoom lens, and the diaphragm 30 is located on the side of the first lens group close to the object side, so as to restrict the light incident into the first lens group G1.
- the zoom lens may also include a filter 10 .
- the second lens group G2 is followed by a filter 10 for correcting color deviation or a flat glass L1 for protecting the imaging photosensitive element, and the imaging sensor 20 is located at the image plane , the imaging sensor 20 may be a CCD or a CMOS.
- the first lens group G1 has a positive refractive power
- the second lens group G2 has a negative refractive power.
- the focal length EFLG1 of the first lens group G1 8.03 mm
- the focal length EFLG2 of the second lens group G2 ⁇ 10.14 mm.
- the ratio of the focal length EFLG1 of the first lens group G1 to the focal length EFLG2 of the second lens group G2 is
- 0.79
- the ratio of the focal length EFL of the second lens G2 to the focal length EFLG1 of the zoom lens is
- 0.70.
- the first lens group G1 includes a first lens LG11 , a second lens LG12 and a third lens LG13 .
- the first lens LG11 has positive refractive power
- the second lens LG12 has negative refractive power
- the third lens LG13 has positive refractive power.
- the material of the first lens LG11 is optical glass, specifically an optical glass convex lens.
- the second lens group G2 includes a fourth lens LG21 and a fifth lens LG22.
- the fourth lens LG21 has a negative refractive power
- the fifth lens LG22 can have a positive or negative refractive power, which is not specifically limited here.
- the material of the fourth lens LG21 and the fifth lens LG22 may be optical glass or optical plastic, which is not specifically limited in this application.
- the vertical axis magnification ⁇ 0.3.
- LG11S1 refers to the side of the first lens LG11 facing the object side
- LG11S2 refers to the side of the first lens LG11 facing the image side
- LG12S1 refers to the side of the second lens LG12 facing the object side
- LG12S2 refers to the side of the second lens LG12 facing the image side
- LG13S1 refers to the side of the third lens LG13 facing the object side
- LG13S2 refers to the side of the third lens LG13 facing the image side
- LG21S1 refers to the side of the fourth lens LG21 facing the object side
- LG21S2 refers to the side of the fourth lens LG21 facing the image side
- LG22S1 refers to the side of the fifth lens LG22 facing the object side
- LG22S2 refers to the side of the fifth lens LG22 facing the image side.
- Table 4a the aspheric coefficients of various aspheric lenses are shown in Table 4a.
- A4 to A30 are aspheric coefficients.
- all aspherical surface types can be defined by but not limited to the following aspheric surface formulas:
- z is the sagittal height of the aspheric surface
- r is the radial coordinate of the aspheric surface
- c is the spherical curvature of the vertex of the aspheric surface
- K is the quadratic surface constant
- A2, A4, A6, A8, ..., A28, A30 are the aspheric surface coefficients .
- Table 4b shows the basic parameters of the zoom lens in the telephoto state.
- Table 4c shows the basic parameters of the zoom lens in the macro state.
- Table 4d shows the parameters of the zoom lens.
- the parameters of the corresponding zoom lens are shown in Table 4d.
- the zoom lens shown in FIG. 25 is used as an example for simulation.
- the specific parameters of the zoom lens can refer to Table 4a, Table 4b, Table 4c, and Table 4d.
- Table 4a Table 4a, Table 4b, Table 4c, and Table 4d.
- FIG. 26 shows a spherical aberration diagram of a zoom lens in a telephoto state.
- the simulation is carried out by taking light of different frequencies as an example, and several common frequencies of light in imaging are illustrated in FIG. 26 .
- the five solid curves in FIG. 26 are light rays with wavelengths of 650nm, 587nm, 546nm, 486nm and 435nm respectively.
- FIG. 26 shows a spherical aberration diagram of a zoom lens in a telephoto state.
- the simulation is carried out by taking light of different frequencies as an example, and several common frequencies of light in imaging are illustrated in FIG. 26 .
- the five solid curves in FIG. 26 are light rays with wavelengths of 650nm, 587nm, 546nm, 486nm and 435nm respectively.
- FIG. 26 shows a spherical aberration diagram of a zoom lens in a telephoto state.
- A represents light with a wavelength of 650nm
- B represents light with a wavelength of 587nm
- C represents light with a wavelength of 546nm
- E represents light with a wavelength of 435nm.
- FIG. 27 shows an astigmatism diagram of the zoom lens in the telephoto state.
- the solid line in the astigmatism diagram represents the field curvature value of light at the central wavelength (555nm) on the meridional image plane, and the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- FIG. 28 shows a distortion diagram of the zoom lens in a telephoto state.
- the solid line in the distortion graph represents the distortion value of the central wavelength (555nm) light passing through the zoom lens. It can be seen from FIG. 28 that the distortion of the light is small, less than 2% of the image distortion threshold that can be perceived by the human eye.
- FIG. 29 shows a diagram of spherical aberration of the zoom lens in a macro state.
- the simulation is carried out by taking light of different frequencies as an example, and several common frequencies of light in imaging are illustrated in FIG. 29 .
- the five solid curves in FIG. 29 are light rays with wavelengths of 650nm, 587nm, 546nm, 486nm and 435nm respectively.
- A represents light with a wavelength of 650nm
- B represents light with a wavelength of 587nm
- C represents light with a wavelength of 546nm
- E represents light with a wavelength of 435nm.
- FIG. 30 shows an astigmatism diagram of the zoom lens in a macro state.
- the solid line in the astigmatism diagram represents the field curvature value of light at the central wavelength (555nm) on the meridional image plane, and the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- the solid line in FIG. 31 represents the distortion value of light with a central wavelength (555 nm) passing through the zoom lens. It can be seen from FIG. 31 that the light distortion is small, less than 2% of the image distortion threshold that can be perceived by human eyes.
- FIG. 32 shows a schematic structural diagram of a fifth zoom lens provided by an embodiment of the present application.
- the zoom lens includes a first lens group G1 and a second lens group G2 arranged in sequence.
- the first lens group G1 has three lenses; the second lens group G2 has two lenses.
- This embodiment uses the second lens group G2 to focus along the direction of the optical axis, and is suitable for macro and long-distance shooting scenes of optical lenses.
- a diaphragm 30 may also be provided in the zoom lens, and the diaphragm 30 is located on the side of the first lens group close to the object side, so as to restrict the light incident into the first lens group G1.
- the zoom lens may also include a filter 10 .
- the second lens group G2 is followed by a filter 10 for correcting color deviation or a flat glass L1 for protecting the imaging photosensitive element, and the imaging sensor 20 is located at the image plane , the imaging sensor 20 may be a CCD or a CMOS.
- the first lens group G1 has a positive refractive power
- the second lens group G2 has a negative refractive power.
- the focal length EFLG1 of the first lens group G1 8.03 mmmm
- the focal length EFLG2 of the second lens group G2 ⁇ 10.14.
- the ratio of the focal length EFLG1 of the first lens group G1 to the focal length EFLG2 of the second lens group G2 is
- 0.79
- the ratio of the focal length EFL of the second lens G2 to the focal length EFLG1 of the zoom lens is
- 0.70.
- the first lens group G1 includes a first lens LG11 , a second lens LG12 and a third lens LG13 .
- the first lens LG11 has positive refractive power
- the second lens LG12 has negative refractive power
- the third lens LG13 has positive refractive power.
- the material of the first lens LG11 is optical glass, specifically an optical glass convex lens.
- the second lens group G2 includes a fourth lens LG21 and a fifth lens LG22.
- the fourth lens LG21 has a negative refractive power
- the fifth lens LG22 can have a positive or negative refractive power, which is not specifically limited here.
- the material of the fourth lens LG21 and the fifth lens LG22 may be optical glass or optical plastic, which is not specifically limited in this application.
- the vertical axis magnification ⁇ 0.3.
- LG11S1 refers to the side of the first lens LG11 facing the object side
- LG11S2 refers to the side of the first lens LG11 facing the image side
- LG12S1 refers to the side of the second lens LG12 facing the object side
- LG12S2 refers to the side of the second lens LG12 facing the image side
- LG13S1 refers to the side of the third lens LG13 facing the object side
- LG13S2 refers to the side of the third lens LG13 facing the image side
- LG21S1 refers to the side of the fourth lens LG21 facing the object side
- LG21S2 refers to the side of the fourth lens LG21 facing the image side
- LG22S1 refers to the side of the fifth lens LG22 facing the object side
- LG22S2 refers to the side of the fifth lens LG22 facing the image side.
- Table 5a the aspheric coefficients of various aspheric lenses are shown in Table 5a.
- A4 to A30 are aspheric coefficients.
- all aspherical surface types can be defined by but not limited to the following aspheric surface formulas:
- z is the sagittal height of the aspheric surface
- r is the radial coordinate of the aspheric surface
- c is the curvature of the vertex of the aspheric surface
- K is the quadratic surface constant
- A2, A4, A6, A8, A10, A12 are the aspheric surface coefficients.
- Table 5b shows the basic parameters of the zoom lens in the telephoto state.
- Table 5c shows the basic parameters of the zoom lens in the macro state.
- Table 5d shows the parameters of the zoom lens.
- the parameters of the corresponding zoom lens are shown in Table 5d.
- the zoom lens shown in FIG. 32 is used as an example for simulation.
- the specific parameters of the zoom lens can refer to Table 5a, Table 5b, Table 5c and Table 5d.
- the effect of the zoom lens in the simulation will be described in detail below in conjunction with the accompanying drawings.
- FIG. 33 shows a spherical aberration diagram of a zoom lens in a telephoto state.
- the simulation is carried out by taking light of different frequencies as an example, and several common frequencies of light in imaging are illustrated in Fig. 33 .
- the five solid curves in FIG. 33 are light rays with wavelengths of 650nm, 587nm, 546nm, 486nm and 435nm respectively.
- FIG. 33 shows a spherical aberration diagram of a zoom lens in a telephoto state.
- the simulation is carried out by taking light of different frequencies as an example, and several common frequencies of light in imaging are illustrated in Fig. 33 .
- the five solid curves in FIG. 33 are light rays with wavelengths of 650nm, 587nm, 546nm, 486nm and 435nm respectively.
- FIG. 33 shows a spherical aberration diagram of a zoom lens in a telephoto state.
- A represents light with a wavelength of 650nm
- B represents light with a wavelength of 587nm
- C represents light with a wavelength of 546nm
- E represents light with a wavelength of 435nm.
- FIG. 34 shows an astigmatism diagram of a zoom lens in a telephoto state.
- the solid line in the astigmatism diagram represents the field curvature value of light at the central wavelength (555nm) on the meridional image plane, and the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- FIG. 35 shows a distortion diagram of the zoom lens in the telephoto state.
- the solid line in the distortion graph represents the distortion value of the central wavelength (555nm) light passing through the zoom lens. It can be seen from FIG. 35 that the light distortion is small, less than 2% of the image distortion threshold that can be perceived by human eyes.
- FIG. 36 shows a diagram of spherical aberration of the zoom lens in a macro state.
- the simulation is carried out by taking light of different frequencies as an example, and several common frequencies of light in imaging are illustrated in Fig. 36 .
- the five solid curves in FIG. 36 are light rays with wavelengths of 650nm, 587nm, 546nm, 486nm and 435nm respectively.
- A represents light with a wavelength of 650nm
- B represents light with a wavelength of 587nm
- C represents light with a wavelength of 546nm
- E represents light with a wavelength of 435nm.
- FIG. 37 shows an astigmatism diagram of the zoom lens in a macro state.
- the solid line in the astigmatism diagram represents the field curvature value of light at the central wavelength (555nm) on the meridional image plane, and the dotted line represents the field curvature value of light at the central wavelength (555nm) on the sagittal image plane.
- FIG. 37 there are sharply focused images throughout the entire field of view.
- the solid line in FIG. 38 represents the distortion value of light with a central wavelength (555 nm) passing through the zoom lens. It can be seen from FIG. 31 that the light distortion is small, less than 2% of the image distortion threshold that can be perceived by human eyes.
- FIG. 39 shows another zoom lens provided by the embodiment of the present application.
- the zoom lens further includes a reflector 40.
- the reflector 40 is located near the object side of the first lens group G1 and is used to reflect light to the first lens group G1. , so that periscope shooting can be realized, and the space for lens placement can be improved.
- prisms can also be used. The prisms are arranged on the object side of the first lens group G1 and can also reflect light to the first lens group G1 to achieve the same effect.
- the zoom lens provided by the embodiment of the present application can adopt the technical solution of combining the first lens group and the second lens group, and introduce the focusing method of the second lens group, which can be applied to long-distance and shooting scenes under macro distance, and meet the requirement of a compact optical system, and improve the shooting effect of the mobile terminal.
- Figure 40 shows the application scenario of the zoom lens in the mobile phone.
- the arrangement direction of the lens groups 301 in the zoom lens 300 can be parallel to the length direction of the mobile phone casing 400, and the lens group 301 is arranged between the mobile phone casing 400 and the middle frame 500, it should be understood
- FIG. 40 only exemplifies the arrangement position and arrangement method of the lens group 301 , and the lens group 301 in FIG. 40 does not represent the actual number of lenses in the lens group 301 .
- the zoom lens adopts the periscope type the impact on the thickness of the mobile phone can be reduced.
- the embodiment of the present application also provides a camera module.
- a camera module is provided.
- the camera module includes a photosensitive element and the zoom lens described in any one of the above, and the photosensitive element is located on the image of the zoom lens.
- the zoom lens is used to receive the light reflected by the object to be photographed and project it to the photosensitive element, and the photosensitive element is used to convert the light into an image signal.
- the present application provides a mobile terminal, which may be a mobile phone, a tablet computer, a notebook, and the like.
- the mobile terminal includes a casing, and any one of the above zoom lenses arranged in the casing.
- the periscope zoom lens is arranged in the mobile phone.
- the zoom lens shown in Figure 32 The zoom lens can be applied to shooting scenes under long-distance and macro-distance by adopting the technical scheme of combining two lens groups. Compared with the existing telephoto and macro-compatible The lens meets the miniaturization requirements, and achieves higher resolution and better aberration control.
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Abstract
Description
微距倍率β | 0.30 |
无穷远F# | 3.42 |
EFLG1 | 8.15 |
EFLG2 | -12.45 |
无穷远EFL | 14.45 |
|EFLG1/EFLG2| | 0.65 |
|EFLG2/EFL| | 0.86 |
△ | 2.40 |
光学总长TTL | 14.94 |
△/TTL | 0.16 |
微距倍率β | 0.3 |
无穷远F# | 3.42 |
EFLG1 | 5.80 |
EFLG2 | -4.75 |
无穷远EFL | 12.00 |
|EFLG1/EFLG2| | 1.22 |
|EFLG2/EFL| | 0.40 |
△ | 1.31 |
光学总长TTL | 13.41 |
△/TTL | 0.10 |
微距倍率β | 0.3 |
无穷远F# | 3.42 |
EFLG1 | 10.27 |
EFLG2 | -16.4 |
无穷远EFL | 16.6 |
|EFLG1/EFLG2| | 0.63 |
|EFLG2/EFL| | 0.99 |
△ | 4 |
光学总长TTL | 18 |
△/TTL | 0.22 |
微距倍率β | 0.3 |
无穷远F# | 3.34 |
EFLG1 | 8.03 |
EFLG2 | -10.14 |
无穷远EFL | 14.45 |
|EFLG1/EFLG2| | 0.79 |
|EFLG2/EFL| | 0.70 |
△ | 2.38 |
光学总长TTL | 15.5 |
△/TTL | 0.15 |
微距倍率β | 0.3 |
无穷远F# | 3 |
EFLG1 | 9.6 |
EFLG2 | -10.77 |
无穷远EFL | 16.5 |
|EFLG1/EFLG2| | 0.89 |
|EFLG2/EFL| | 0.65 |
△ | 1.68 |
光学总长TTL | 17.3 |
△/TTL | 0.10 |
Claims (13)
- 一种变焦镜头,其特征在于,包括:沿物侧到像侧排列的第一透镜组和第二透镜组,所述第一透镜组固定,所述第二透镜组可沿光轴方向滑动;其中,所述第一透镜组具有正光焦度;所述第二透镜组具有负光焦度;所述第一透镜组的焦距EFLG1与所述第二透镜组的焦距EFLG2的比值满足:0.4<|EFLG1/EFLG2|<1.22;所述第二透镜组的焦距EFLG2与所述光学镜头的焦距EFL的比值满足:0.4<|EFLG2/EFL|<1。
- 如权利要求1所述的变焦镜头,其特征在于,所述第一透镜组包括至少一个透镜,且所述第一透镜组中最靠近所述物侧的透镜具有正光焦度。
- 如权利要求2所述的变焦镜头,其特征在于,所述第一透镜组中最靠近所述物侧的透镜为光学玻璃制备而成的透镜。
- 如权利要求2或3所述的变焦镜头,其特征在于,所述第一透镜组包括,沿物侧到像侧排列的第一透镜和第二透镜;所述第二透镜具有负光焦度。
- 如权利要求1~4任一项所述的变焦镜头,其特征在于,在所述变焦镜头由远距状态到微距状态过程中,所述第二透镜组由所述物侧向所述像侧方向移动,所述第二透镜组的移动行程△与所述变焦镜头的光学总长TTL的比满足△/TTL<0.4。
- 如权利要求5所述的变焦镜头,其特征在于,所述第二透镜组的移动行程△<4mm。
- 如权利要求1~6任一项所述的变焦镜头,其特征在于,所述第二透镜组包含有至少一个透镜;其中,所述第二透镜组中最靠近所述物侧的透镜朝向所述像侧的表面为凹面。
- 如权利要求1~7任一项所述的变焦镜头,其特征在于,所述变焦镜头的光圈满足2.8>F#。
- 如权利要求1~8任一项所述的变焦镜头,其特征在于,在远距状态下,所述第二透镜组移动至靠近所述物侧,所述变焦镜头的对焦距离ODt满足:1m<ODt<∞。
- 如权利要求1~9任一项所述的变焦镜头,其特征在于,在微距状态下,所述第二透镜组移动至靠近所述像侧,所述变焦镜头的对焦距离Odm满足:0.03m<Odm<0.2m。
- 如权利要求1~9任一项所述的变焦镜头,其特征在于,所述变焦镜头的微距垂轴放大倍率为0.3<β<0.7。
- 一种摄像头模组,其特征在于,包括感光元件和如权利要求1至11中任一项所述的变焦镜头,所述感光元件位于所述变焦镜头的像侧,其中,所述变焦镜头用于接收被拍摄物体所反射的光线并投射至所述感光元件,所述感光元件用于将所述光线转化成图像信号。
- 一种移动终端,其特征在于,包括壳体,以及设置在所述壳体内的如权利要求1~11任一项所述的变焦镜头。
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US18/575,452 US20240210665A1 (en) | 2021-06-30 | 2022-06-23 | Zoom lens, camera module, and mobile terminal |
EP22831855.6A EP4343402A4 (en) | 2021-06-30 | 2022-06-23 | ZOOM LENS, CAMERA MODULE AND MOBILE DEVICE |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004240074A (ja) * | 2003-02-05 | 2004-08-26 | Minolta Co Ltd | 撮像レンズ |
CN101236294A (zh) * | 2007-02-01 | 2008-08-06 | 玉晶光电(厦门)有限公司 | 可调式光学系统 |
JP2015163927A (ja) * | 2014-02-28 | 2015-09-10 | 株式会社タムロン | インナーフォーカス式レンズ |
CN114384668A (zh) * | 2020-10-22 | 2022-04-22 | 华为技术有限公司 | 光学系统及终端设备 |
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JP3397363B2 (ja) * | 1992-04-06 | 2003-04-14 | ペンタックス株式会社 | ズームレンズ |
KR100256207B1 (ko) * | 1994-08-19 | 2000-05-15 | 유무성 | 줌렌즈 |
JP3495622B2 (ja) * | 1998-12-22 | 2004-02-09 | ペンタックス株式会社 | ズームレンズ系 |
JP2002221660A (ja) * | 2001-01-24 | 2002-08-09 | Asahi Optical Co Ltd | ズームレンズ系 |
JP5417006B2 (ja) * | 2009-03-26 | 2014-02-12 | 株式会社タムロン | ズームレンズ |
JP2016136213A (ja) * | 2015-01-23 | 2016-07-28 | 株式会社ニコン | 光学系、この光学系を有する光学機器、及び、光学系の製造方法 |
KR102436510B1 (ko) * | 2017-06-30 | 2022-08-25 | 삼성전자주식회사 | 옵티칼 렌즈 어셈블리 및 이를 포함한 전자 장치 |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004240074A (ja) * | 2003-02-05 | 2004-08-26 | Minolta Co Ltd | 撮像レンズ |
CN101236294A (zh) * | 2007-02-01 | 2008-08-06 | 玉晶光电(厦门)有限公司 | 可调式光学系统 |
JP2015163927A (ja) * | 2014-02-28 | 2015-09-10 | 株式会社タムロン | インナーフォーカス式レンズ |
CN114384668A (zh) * | 2020-10-22 | 2022-04-22 | 华为技术有限公司 | 光学系统及终端设备 |
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US20240210665A1 (en) | 2024-06-27 |
CN115542522A (zh) | 2022-12-30 |
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