WO2020088039A1 - 光学镜头、摄像模组及其组装方法 - Google Patents

光学镜头、摄像模组及其组装方法 Download PDF

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Publication number
WO2020088039A1
WO2020088039A1 PCT/CN2019/101275 CN2019101275W WO2020088039A1 WO 2020088039 A1 WO2020088039 A1 WO 2020088039A1 CN 2019101275 W CN2019101275 W CN 2019101275W WO 2020088039 A1 WO2020088039 A1 WO 2020088039A1
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Prior art keywords
lens
component
field curvature
lens component
lens group
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/101275
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English (en)
French (fr)
Inventor
王明珠
刘春梅
田中武彦
吴雨榕
虞建中
梅哲文
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Ningbo Sunny Opotech Co Ltd
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Ningbo Sunny Opotech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201821777271.8U external-priority patent/CN209148947U/zh
Priority claimed from CN201811283162.5A external-priority patent/CN111123458B/zh
Application filed by Ningbo Sunny Opotech Co Ltd filed Critical Ningbo Sunny Opotech Co Ltd
Publication of WO2020088039A1 publication Critical patent/WO2020088039A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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

Definitions

  • the present application relates to the field of optical imaging technology. Specifically, the present application relates to an optical lens, a camera module, and an assembly method thereof.
  • the factors that affect the lens resolution come from the errors of each component and its assembly, the error of the thickness of the lens spacing element, the error of the assembly of each lens, and the change in the refractive index of the lens material. Because there are many factors that affect the resolution of the lens, it exists in multiple components, and the control of each factor has the limit of manufacturing accuracy. If it is only to improve the accuracy of each component, the lifting capacity is limited, the cost is high, and it cannot meet the increasing market The demand for improved imaging quality.
  • the applicant proposes to adjust and determine the relative positions of the upper and lower sub-lenses based on the active calibration process, and then bond the upper and lower sub-lenses together according to the determined relative positions, thereby manufacturing a complete optical lens or camera module Assembly method.
  • This solution can improve the process capability index (CPK) of mass-produced optical lenses or camera modules and improve imaging quality.
  • CPK process capability index
  • the performance evaluation index of the camera module includes the peak resolution and field curvature of each field of view.
  • the peak of the resolution force represents the imaging clarity of the selected field of view
  • the field curvature is also called the image field curvature.
  • the field curvature can be defined as the deviation of the center point of the fitted plane from the clear point of the selected field of view and the ideal center position (note that this is not the only way to define the field curvature. It can also be defined as: the degree of tortuosity of the image plane to which the clear imaging point of the selected field of view fits).
  • the photosensitive module contains a photosensitive chip, which is mounted on the circuit board. During assembly, baking thermal stress or other mechanical stress will also cause the photosensitive chip to bend and produce field curvature. That is to say, when the lens material whose field curvature is within the acceptable range is assembled with a semi-finished chip (that is, a photosensitive module) with a certain field curvature, defective products will also appear.
  • the present application provides a solution capable of overcoming at least one drawback of the prior art.
  • an optical lens including: a field curvature lens component including a field curvature lens group including at least one lens; a first lens component including a first lens group , The first lens group includes at least one lens; and a second lens component including a second lens group, the second lens group includes at least one lens, the first lens group, the second lens group and The field curvature lens group together constitute an imageable optical system, and the sensitivity of the first lens group to imaging sharpness is higher than the field curvature lens group; wherein, the first lens group is located on the second lens A front end of the group, and the second lens group is located at the front end of the field curvature lens group; and there is a first gap between the field curvature lens component and the second lens component, and by adjusting the first gap Compensate the field curvature of the optical system.
  • first lens component and the second lens component are bonded together by a second glue material
  • the field curvature lens component and the second lens component are bonded together by a first glue material
  • the The second adhesive material supports and fixes the first lens component and the second lens component after curing, so that the relative position between the first lens component and the second lens component is maintained at the position determined by active calibration Relative position
  • the first adhesive material supports and fixes the field curvature lens component and the second lens component after curing, so that the relative position between the field curvature lens component and the second lens component Maintaining the relative position determined by the active calibration, wherein the active calibration is based on the actual imaging result of the optical system to determine the relative position of the first lens component and the second lens component, and the second lens
  • the relative positions of the components and the field curvature lens components are adjusted.
  • first optical lens and a second optical lens among the multiple optical lenses under the same optical design, and the first gap of the first optical lens is in the direction of the optical axis of the optical lens The size is different from the size of the first gap of the second optical lens in the optical axis direction of the optical lens.
  • the second lens component further includes a motor
  • the motor includes a motor housing and a motor carrier
  • the motor carrier is movably connected to the motor housing
  • the second lens group is mounted on the motor carrier ;
  • the first glue material is located between the motor housing and the field curvature lens components.
  • the field curvature lens group has only one lens.
  • a camera module including: at least one imaging lens component, wherein each of the imaging lens components includes an imaging lens group, and the imaging lens group includes at least one lens; and one The field curvature component includes a photosensitive component and a field curvature lens group fixed to the photosensitive component, the field curvature lens group includes at least one lens, and all the imaging lens group and the field curvature lens group together form an imageable An optical system; wherein, there is a first gap between the field curvature component and the imaging lens component, and the field curvature of the optical system is compensated by adjusting the first gap.
  • the at least one imaging lens component includes: a first lens component including a first lens group, the first lens group including at least one lens; and a second lens component including a second lens group, the first The two lens groups include at least one lens, the first lens group, the second lens group, and the field curvature lens group together form an imageable optical system, and the sensitivity of the first lens group to imaging clarity Higher than the field curvature lens group; wherein, the field curvature component and the imaging lens component are bonded by a first adhesive material disposed in the first gap, and the first adhesive material supports and Fixing the field curvature component and the imaging lens component such that the relative position between the field curvature component and the imaging lens component is maintained at the relative position determined by active calibration; the first lens component and the first The two lens components are bonded together by a second adhesive material, and the second adhesive material supports and fixes the first lens component and the second lens component after curing, so that the first lens component and the lens The relative position between the second lens holding member in a position relative to the determined active calibration
  • first camera module and a second camera module among the plurality of camera modules under the same optical design, and the first gap of the first camera module is The size in the optical axis direction is different from the size of the first gap of the second camera module in the optical axis direction of the camera module.
  • the field curvature lens group has only one lens
  • the first lens group is located at the front end of the second lens group
  • the second lens group is located between the first lens group and the field curvature lens group between.
  • the second lens component further includes a motor
  • the motor includes a motor housing and a motor carrier
  • the motor carrier is movably connected to the motor housing
  • the second lens group is mounted on the motor carrier
  • the first glue material is located between the motor housing and the field curvature member; and the first lens group includes at least one variable-focus liquid lens.
  • the number of the imaging lens component is one, the imaging lens component further includes a motor, the motor includes a motor housing and a motor carrier, the motor carrier is movably connected with the motor housing, the The imaging lens component is mounted on the motor carrier.
  • the photosensitive component includes a photosensitive chip, and the actual imaging result of the optical system is obtained according to the image data output by the photosensitive chip.
  • the photosensitive assembly further includes: a circuit board, the photosensitive chip is mounted on the surface of the circuit board; a lens holder, which is installed or formed on the surface of the circuit board and surrounds the photosensitive chip; and a filter A color filter, which is mounted on the lens holder; wherein the field curved lens group bears against the top surface of the lens holder and / or the top surface of the color filter.
  • the first glue material is located between the lens holder and the motor housing, and the field curvature lens group and the motor carrier are separated from each other.
  • the field curved lens group includes a micro lens array.
  • an optical lens assembling method comprising: pre-positioning at least one imaging lens component and a field curvature lens component, wherein the field curvature lens component and the imaging lens component are separated from each other
  • Each imaging lens component includes an imaging lens group, each imaging lens group includes at least one lens, the field curvature lens component includes a field curvature lens group, and the field curvature lens group includes at least one lens
  • the pre-positioning enables the at least one imaging lens group and the field curvature lens group to form an imageable optical system; performing active calibration on the at least one imaging lens component and the field curvature lens component, the active calibration Adjusting the relative position of the at least one imaging lens component and the field curvature lens component based on the actual imaging result of the optical system; wherein by adjusting the first between the imaging lens component and the field curvature lens component A gap to compensate for the field curvature of the optical system; and connecting the at least one imaging lens component and the field Lens means, at least one relative position of
  • the at least one imaging lens component includes a first lens component and a second lens component, wherein the first lens component includes a first lens group, and the first lens group includes at least one lens;
  • the second lens component includes a second lens group, and the second lens group includes at least one lens; in the predetermined position, the first lens component, the second lens component, and the field curvature lens component are performed Pre-positioning, so that the first lens group, the second lens group and the field curvature lens group together form an imageable optical system;
  • the active calibration the active calibration is based on the actual optical system Imaging results to adjust the relative positions of the first lens component, the second lens component, and the field curvature lens component; and in the connection, the first lens component and the second lens component Bonding so that the relative position of the first lens component and the second lens component is maintained at the relative position determined by active calibration, and the second lens component and the field Bonding the lens member, so that the relative position of the second lens member and the curvature of field of the lens holding member in a position relative to
  • the sensitivity of the first lens group to imaging sharpness is higher than that of the field curvature lens group; and in the active calibration, by adjusting the position of the first lens component so that the optical
  • the imaging clarity of the system is up to standard, and the field curvature of the optical system is up to standard by adjusting the position of the field curvature lens component.
  • the field curvature of the optical system is compensated by adjusting the distance between the field curvature lens component and the second lens component in the optical axis direction of the optical lens, so that the optical The field curvature of the system is up to standard.
  • the second lens component further includes a motor
  • the motor includes a motor housing and a motor carrier
  • the motor carrier is movably connected to the motor housing
  • the second lens group is installed In the motor carrier
  • the first lens group includes at least one variable-focus liquid lens; and in the connection, the first lens group is bonded to the field curvature lens component to achieve the first Two lens components are bonded to the field curvature lens components.
  • a method for assembling a camera module comprising: pre-positioning at least one imaging lens component and a field curvature component, wherein the field curvature component and the imaging lens component are separated from each other
  • Each imaging lens component includes an imaging lens group, each imaging lens group includes at least one lens, and the field curvature component includes a photosensitive component and a field curvature lens group fixed to the photosensitive component, the field
  • the curved lens group includes at least one lens, and the predetermined position enables the imaging lens group and the field curved lens group to form an imageable optical system; active the at least one imaging lens component and the field curved component Calibration, the active calibration is based on the actual imaging results of the optical system to adjust the relative position of the at least one imaging lens component and the field curvature component; wherein by adjusting the imaging lens component and the field curvature component A first gap between them to compensate for the field curvature of the optical system; and connecting the at least one imaging lens component and the field A curved
  • the at least one imaging lens component includes a first lens component and a second lens component, wherein the first lens component includes a first lens group, and the first lens group includes at least one lens;
  • the second lens component includes a second lens group, and the second lens group includes at least one lens; in the predetermined position, the first lens component, the second lens component, and the field curvature component are predetermined Position, so that the first lens group, the second lens group, and the field curvature lens group together form an imageable optical system;
  • the active calibration the active calibration is based on the actual imaging of the optical system
  • the relative positions of the first lens component, the second lens component, and the field curvature component are adjusted; and in the connection, the first lens component and the second lens component are bonded So that the relative positions of the first lens component and the second lens component are maintained at the relative positions determined by active calibration, and the second lens component and the curvature component are glued Relative positions, such that the field curvature of the second lens component member held in position relative to the
  • the sensitivity of the first lens group to imaging sharpness is higher than that of the field curvature lens group; and in the active calibration, by adjusting the position of the first lens component so that the optical
  • the imaging clarity of the system is up to standard, and the field curvature of the optical system is up to standard by adjusting the position of the field curvature component.
  • the field curvature of the optical system is compensated by adjusting the distance between the field curvature component and the second lens component in the optical axis direction of the camera module, so that the optical The field curvature of the system is up to standard.
  • the second lens component further includes a motor
  • the motor includes a motor housing and a motor carrier
  • the motor carrier is movably connected to the motor housing
  • the second lens group is installed In the motor carrier
  • the first lens group includes at least one variable-focus liquid lens
  • the second is achieved by bonding the motor housing and the curvature component The adhesion of the lens component and the field curvature component.
  • the field curvature component further includes a motor
  • the motor includes a motor housing and a motor carrier, the motor carrier and the motor housing are movably connected
  • the preparation further includes: The motor housing is fixed to the photosensitive assembly and / or the field curvature lens group, and the field curvature lens group and the motor carrier are kept separated from each other; and in the connection, by The second lens component is bonded to the motor carrier to achieve the bonding of the second lens component and the curvature of field component.
  • the field curvature component further includes a motor
  • the motor includes a motor housing and a motor carrier, the motor carrier and the motor housing are movably connected
  • the preparation further includes: The motor housing is fixed to the photosensitive assembly and / or the field curvature lens group, and the field curvature lens group and the motor carrier are kept separated from each other; and in the connection, by imaging The lens component is bonded to the motor carrier to achieve the bonding of the imaging lens component and the curvature of field component.
  • the field lens component further includes a motor
  • the motor includes a motor housing and a motor carrier
  • the motor carrier and the motor housing are movably connected; and in the connection, through The second lens component is bonded to the motor carrier to achieve the bonding of the second lens component and the curvature lens component.
  • a method for assembling a camera module which includes: assembling an optical lens according to any of the foregoing methods for assembling an optical lens; and installing the optical lens on a photosensitive component to obtain a camera module.
  • This application can correct the field curvature of incoming defective products during the assembly of the camera module or optical lens, thereby relaxing the allowable range of incoming materials.
  • This application can compensate for field curvature caused by chip bending (such as baking thermal stress or other mechanical stress will also cause photosensitive chip bending) during the assembly of the camera module, thereby improving yield.
  • This application can compensate for field curvature while ensuring that the peak resolution does not deteriorate too much, thereby improving the overall imaging quality.
  • FIG. 1 shows an assembly schematic diagram of a camera module according to an embodiment of the present application
  • FIG. 2 shows an assembly schematic diagram of a camera module according to another embodiment of the present application
  • FIG. 3 shows a schematic assembly diagram of a camera module according to yet another embodiment of the present application.
  • FIG. 4 shows an assembly schematic diagram of a camera module according to yet another embodiment of the present application.
  • FIG. 5 shows an assembly schematic diagram of a camera module according to yet another embodiment of the present application.
  • FIG. 6 shows a schematic diagram of an optical lens assembly when the field curvature lens component is composed of a single lens in an embodiment of the present application
  • FIG. 7 shows a schematic diagram of an optical lens assembly when a field curvature lens component includes a lens barrel in another embodiment of the present application
  • FIG. 8 shows a schematic diagram of the assembly of the camera module when the field curvature lens component is composed of a single lens in an embodiment of the present application
  • FIG. 9 shows a schematic diagram of an assembly of a camera module when a field curvature lens component includes a lens barrel in another embodiment of the present application.
  • FIG. 10A shows a relative position adjustment method in active calibration in an embodiment of the present application
  • FIG. 10C shows a relative position adjustment manner in which adjustments in the v and w directions are added in active calibration according to yet another embodiment of the present application.
  • first, second, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Therefore, without departing from the teachings of the present application, the first body discussed below may also be referred to as the second body.
  • the terms “substantially”, “approximately”, and similar terms are used as an approximation term, not as a degree term, and illustrate that the measurement value or The inherent deviation in the calculated value.
  • FIG. 1 shows a schematic assembly diagram of a camera module according to an embodiment of the present application.
  • the camera module of this embodiment includes: an imaging lens component 10, a field curvature component 20, and a first glue material (FIG. 1 shows the imaging lens component 10 and the field curvature component 20, respectively, but The first glue material is not shown).
  • the imaging lens component 10 includes an imaging lens group 11 that includes at least one lens (the imaging lens group 11 may be a single lens or may be composed of multiple lenses).
  • the field curvature component 20 includes a photosensitive component 21 and a field curvature lens group 22 fixed to the photosensitive component.
  • the field curvature lens group 22 includes at least one lens (the field curvature lens group may be a single lens sensitive to field curvature or may Composed of multiple lenses that are sensitive to field curvature), the imaging lens group 11 and the field curvature lens group 22 together form an imageable optical system, and the field curvature sensitivity of the field curvature lens group may be higher than that
  • the imaging lens group (note that in other embodiments of the present application, the field curvature sensitivity of the field curvature lens group may not be higher than that of the imaging lens group, which will be further described in conjunction with other embodiments below).
  • the first glue material is arranged in the gap between the field curvature component and the imaging lens component, and the first glue material supports and fixes the field curvature component and the imaging lens component after curing, so that the The relative position between the field curvature component and the imaging lens component is maintained at the relative position determined by the active calibration, wherein the active calibration is based on the actual imaging result of the optical system to the imaging lens component and the The relative position of the field curvature components is adjusted.
  • the field curvature sensitivity (sometimes called field curvature sensitivity) of the lens or lens group can be simulated to simulate the degree of influence of the manufacturing tolerance and assembly tolerance of each lens on the field curvature (usually the field curvature in the selected field of view) To judge.
  • the lenses purchased on the market will directly provide a sensitivity analysis table, and according to the sensitivity analysis table, the field curvature sensitivity information of each lens or (lens group) can be directly obtained. Based on these field curvature sensitivity information, it can be determined which lens or lenses constitute the field curvature lens group and which lens or lenses constitute the imaging lens group in the designed optical system.
  • the camera module provided in this embodiment can correct the curvature of field of incoming defective products during the assembly process, thereby relaxing the acceptance range of incoming materials. In addition, it can also compensate the field curvature caused by the chip bending (such as baking thermal stress or other mechanical stress will also cause the photosensitive chip to bend), thereby improving the yield.
  • the field curvature lens group may not be the lens group with the highest field curvature sensitivity in the camera module.
  • the field-curved lens group may be a lens located at the bottom (ie, the last end) in the optical design. In the active calibration stage, by adjusting the lens and the imaging lens component on the optical axis (referring to the camera module The distance in the direction of the optical axis), the field curvature of the optical system can be adjusted to compensate for the field curvature.
  • the field curvature lens group is composed of a single lens, it is not necessary to configure a separate lens barrel for the field curvature member, but the field curvature lens can be directly fixed to the photosensitive assembly.
  • the field-curved lens group may be composed of only a single field-curved lens, and the field-curved lens may depend on the photosensitive component (for example, may depend on the color filter of the photosensitive component).
  • the field curvature component (field curvature component formed by directly fixing the field curvature lens to the photosensitive component) can be used to compensate the field curvature, thereby obtaining a camera module product with imaging quality up to the standard.
  • the first glue material is arranged in a first gap between the second lens component and the field curvature component, in optical design, the first gap is in the light of the optical lens
  • the design dimension in the axial direction is at least 50 microns.
  • the first of the two optical lenses (or two camera modules) The size of a gap in the optical axis direction of the optical lens is different.
  • the thickness (referring to the thickness in the optical axis direction) is different.
  • the thickness of the first adhesive material (referred to as the thickness in the optical axis direction) of multiple optical lenses (or multiple camera modules) in the same batch of products under the same optical design is different, it can be regarded as the batch
  • the secondary product is a product assembled after active calibration of the first gap.
  • the first glue material is arranged in the first gap between the field curvature component and the imaging lens component (or a second lens component to be described below), and After curing, the first glue material supports and fixes the field curvature component and the imaging lens component (or a second lens component to be described below), so that the field curvature component and the imaging lens component (or The relative position between the second lens components, which will be described below, is maintained at the relative position determined by active calibration.
  • the imaging lens component further includes a motor 12.
  • the motor 12 includes a motor housing 12a and a motor carrier (note that the motor carrier is not shown in FIG.
  • the motor carrier is movably connected to the motor housing, for example, through a spring (also called a spring) Piece) movably connects the motor carrier with the motor housing.
  • the motor carrier may have a cylindrical shape, and the imaging lens component is mounted on the motor carrier.
  • the camera module of this embodiment can further implement motor-based functions such as auto focus or optical image stabilization.
  • the photosensitive assembly 21 includes a photosensitive chip 21a, a circuit board 21b, a lens holder 21c, and a color filter 21d.
  • the actual imaging result required for active calibration is obtained based on the image data output by the photosensitive chip 21a.
  • the photosensitive chip 21a is mounted on the surface of the circuit board 21b.
  • the lens holder 21c is mounted or formed on the surface of the circuit board 21b and surrounds the photosensitive chip 21a.
  • the color filter 21d is attached to the lens holder 21c.
  • the field curvature lens group 22 bears against the top surface of the lens holder 21c and / or the top surface of the color filter 21d.
  • the first glue material may be located between the lens holder 21c and the motor housing 12a, and the field curvature lens group 22 and the motor carrier are separated from each other.
  • separation from each other means that the field curved lens group and the motor carrier are not in direct contact, nor are they bonded to each other by the glue material.
  • FIG. 2 shows an assembly diagram of a camera module according to another embodiment of the present application.
  • the number of imaging lens components 10 is one, and the imaging lens components 10 do not include a motor.
  • the field curvature component 20 includes a motor 12.
  • the motor 12 includes a motor housing 12a and a motor carrier.
  • the motor carrier may be cylindrical, and the motor carrier is movably connected to the motor housing 12a, for example, through the shrapnel 12b (also called It is a reed.
  • shrapnel 12b also called It is a reed.
  • upper and lower spring pieces can be provided.
  • 12b in FIG. 2 only shows the upper spring piece.
  • 12b in FIG. 2 only shows the upper spring piece.
  • the first glue material is located between the motor carrier and the imaging lens component 10.
  • the imaging lens component 10 may have a lens barrel through which a plurality of lenses are assembled to constitute the imaging lens component 10. At this time, the first glue material is located between the inner side of the motor carrier and the outer side of the lens barrel.
  • FIG. 3 shows an assembly schematic diagram of a camera module according to yet another embodiment of the present application.
  • the camera module includes two imaging lens components, a field curvature component 20, a first glue material, and a second glue material.
  • Two of the imaging lens components are the first lens component 10a and the second lens component 10b.
  • the first lens component 10a includes a first lens group including at least one lens.
  • the second lens component 10b includes a second lens group including at least one lens, and the first lens group, the second lens group, and the field curvature lens group 22 together form an imageable optical system , And the sensitivity of the first lens group to imaging sharpness is higher than the field curvature lens group 22.
  • the first glue is arranged in the gap between the field curvature member 20 and the imaging lens part (in this embodiment, the first glue is arranged between the field curvature member 20 and the second lens part 10b Gap), and the first adhesive material supports and fixes the field curvature component and the imaging lens component after curing, so that the relative position between the field curvature component and the imaging lens component remains at the active calibration place
  • the determined relative position, wherein the active calibration is to adjust the relative position of the imaging lens component and the field curvature component based on the actual imaging result of the optical system.
  • the first lens component 10a and the second lens component 10b are bonded together by a second glue material, which supports and fixes the first lens component and the second lens component after curing So that the relative position between the first lens component and the second lens component is maintained at the relative position determined by active calibration.
  • the sensitivity of the lens or lens group to imaging clarity (sometimes sensitivity is also called sensitivity) can be simulated to simulate the manufacturing tolerance and assembly tolerance of each lens to the imaging clarity (usually the imaging clarity in the selected field of view) Degree).
  • the lenses purchased on the market will directly provide a sensitivity analysis table, and according to the sensitivity analysis table, the sensitivity information of each lens or (lens group) on imaging sharpness can be directly obtained.
  • imaging clarity can be characterized by a peak resolution (eg, the peak of the MTF curve).
  • the camera module can correct the field curvature of the incoming bad product during the assembly process, thereby relaxing the incoming acceptance range.
  • it can also compensate the field curvature caused by the chip bending (such as baking thermal stress or other mechanical stress will also cause the photosensitive chip to bend), thereby improving the yield.
  • the peak resolution does not deteriorate too much, thereby improving the overall imaging quality.
  • the second lens component further includes a motor 12, the motor 12 includes a motor housing 12a and a motor carrier, the motor carrier and the motor housing
  • the body 12a is movably connected, for example, the motor carrier and the motor housing are movably connected by an elastic piece 12b (also referred to as a reed).
  • the second lens group is mounted on the motor carrier.
  • the first glue material is located between the motor housing 12a and the curved field member 20.
  • the camera module of this embodiment can further implement motor-based functions such as auto focus or optical image stabilization.
  • the first lens group includes at least one zoom liquid lens, thereby forming a zoom camera module.
  • the liquid surface shape of the liquid lens in the first lens part 10a can be changed electrically, and the second lens group can be moved by the motor in the second lens part 10b to achieve zooming and keep the image plane on the photosensitive chip plane.
  • the zoom camera module of this embodiment can realize stepless zoom.
  • the field curved lens group 22 may include a microlens array, which may be fixed to the photosensitive component and implement a refocusing function by carrying a corresponding algorithm.
  • the first lens group is located at the front end of the second lens group, and the second lens group is located at the first lens group and the field Between curved lens groups.
  • the front end refers to the end of the camera module or optical lens close to the object side.
  • optical devices described in the foregoing embodiments are all camera modules. According to some other embodiments of the present application, corresponding optical lenses are also provided.
  • the optical lens includes an imaging lens component and a field curvature lens component.
  • the imaging lens component includes an imaging lens group, and the imaging lens group includes at least one lens.
  • the field curvature lens component includes a field curvature lens group including at least one lens, and the imaging lens group and the field curvature lens group together form an imageable optical system.
  • the field curvature sensitivity of the field curvature lens group may be higher than that of the imaging lens group (note that in other embodiments, the field curvature sensitivity of the field curvature lens group may not be higher than that of the imaging Lens group).
  • the optical lens further includes a first glue material arranged in the gap between the field curvature lens component and the imaging lens component, and the first glue material supports and fixes the field curvature lens component and after curing
  • the imaging lens component such that the relative position between the field curvature lens component and the imaging lens component is maintained at the relative position determined by active calibration, wherein the active calibration is based on the actual imaging result of the optical system Adjusting the relative positions of the at least one imaging lens component and the field curvature lens component.
  • the field curvature sensitivity (sometimes called field curvature sensitivity) of the lens or lens group can be simulated to simulate the degree of influence of the manufacturing tolerance and assembly tolerance of each lens on the field curvature (usually the field curvature in the selected field of view) To judge.
  • the lenses purchased on the market will directly provide a sensitivity analysis table, and according to the sensitivity analysis table, the field curvature sensitivity information of each lens or (lens group) can be directly obtained. Based on these field curvature sensitivity information, it can be determined which lens or lenses constitute the field curvature lens group and which lens or lenses constitute the imaging lens group in the designed optical system.
  • the field curvature lens group may not be the lens group with the highest field curvature sensitivity in the optical lens.
  • the field curvature lens group may be a lens located at the bottom (ie, the last end) in the optical design.
  • the distance in the direction of the optical axis can adjust the field curvature of the optical system to compensate for the field curvature of the optical system.
  • only moving the field curvature lens group in the optical axis direction can adjust the field curvature of the optical system without affecting other imaging quality indexes of the optical system (such as the imaging clarity of the selected field of view).
  • the number of the imaging lens components is two, which are the first lens component and the second lens component, respectively.
  • the first lens component includes a first lens group, and the first lens group includes at least one lens.
  • the second lens component includes a second lens group including at least one lens, and the first lens group, the second lens group, and the field curvature lens group together constitute an imageable optical system, and The sensitivity of the first lens group to imaging sharpness is higher than that of the field curvature lens group.
  • the first lens component and the second lens component are bonded together by a second adhesive material, and the second adhesive material supports and fixes the first lens component and the second lens component after curing, so that The relative position between the first lens part and the second lens part is maintained at the relative position determined by active calibration.
  • the sensitivity of the lens or lens group to imaging clarity (sometimes sensitivity is also called sensitivity) can be simulated to simulate the manufacturing tolerance and assembly tolerance of each lens to the imaging clarity (usually the imaging clarity in the selected field of view) Degree).
  • the lenses purchased on the market will directly provide a sensitivity analysis table, and according to the sensitivity analysis table, the sensitivity information of each lens or (lens group) on imaging sharpness can be directly obtained.
  • the field curvature lens component may be composed of a single lens.
  • FIG. 6 shows a schematic diagram of an optical lens assembly when the field curvature lens component is composed of a single lens in one embodiment of the present application.
  • the optical lens is composed of the first lens component 10a, the second lens component 10b and the field curvature lens component 20a through active calibration, wherein the field curvature lens component 20a may be composed of a single lens (the lens may be mirrorless Bare lens of the tube).
  • FIG. 7 shows an assembly diagram of an optical lens when a field curvature lens component includes a lens barrel in another embodiment of the present application.
  • the field curvature lens component 20a may include a lens barrel and one or more lenses mounted in the lens barrel.
  • FIG. 8 shows an assembly diagram of the camera module when the field curvature lens component is composed of a single lens in an embodiment of the present application.
  • the optical lens 100 (referred to as the assembled optical lens 100) of the embodiment of FIG. 6 may be installed in a motor carrier of a motor, and then the assembly of the motor 12 and the optical lens 100 (may be referred to as a motor lens assembly) It is installed on the photosensitive component 200 to obtain a dynamic focus camera module (for example, an autofocus camera module).
  • 9 shows a schematic diagram of an assembly of a camera module when a field curvature lens component includes a lens barrel in another embodiment of the present application. Referring to FIG. 9, the optical lens 100 (referred to as the assembled optical lens 100) of the embodiment of FIG.
  • a dynamic focus camera module for example, an autofocus camera module
  • the second lens component further includes a motor
  • the motor includes a motor housing and a motor carrier
  • the motor carrier is movably connected to the motor housing
  • the second lens group is mounted on the motor carrier.
  • the first glue material is located between the motor housing and the field curvature lens component.
  • the first lens group includes at least one variable-focus liquid lens.
  • both the first lens component and the second lens component can zoom, thereby forming a zoom optical lens.
  • the shape of the liquid surface of the liquid lens can be changed electrically to achieve zooming or focusing.
  • the second lens group is driven by a motor to achieve zooming or focusing.
  • a camera module assembly method is also provided.
  • a method for assembling a camera module includes the following steps S10 to S30 that are sequentially executed.
  • Step S10 Pre-position at least one imaging lens component and the field curvature component, wherein the field curvature component and the imaging lens component are separated from each other, and each of the imaging lens components includes an imaging lens group, each The imaging lens group includes at least one lens, the field curvature component includes a photosensitive component and a field curvature lens group fixed to the photosensitive component, the field curvature lens group includes at least one lens, and the predetermined position causes the imaging lens The group and the field curved lens group together constitute an imageable optical system.
  • the predetermined position may include using laser altimetry and other methods to obtain the position and posture information of the imaging lens component and the field curvature component, respectively, and then adjusting them to a predetermined initial position.
  • the initial position here refers to the initial position of active calibration. In other words, this step can be regarded as coarse adjustment of the positions of the imaging lens component and the field curvature component.
  • Step S20 performing active calibration on the at least one imaging lens component and the field curvature component, the active calibration is based on the actual imaging result of the optical system to perform the calibration on the at least one imaging lens component and the field
  • the relative position of the curved part is adjusted, wherein the field curvature of the optical system is compensated by adjusting the first gap between the imaging lens part and the field curved lens part.
  • This step can be regarded as fine-tuning the positions of the imaging lens component and the field curvature component.
  • Step S30 bonding the at least one imaging lens component and the field curvature component, so that the relative position of the at least one imaging lens component and the field curvature component is maintained at the relative position determined by active calibration.
  • Bonding usually includes two sub-steps of painting glue and curing (that is, curing the glue material).
  • the glue painting step can be performed before the active calibration or after the active calibration is completed.
  • the camera module can correct the field curvature of the incoming bad product during the assembly process, thereby relaxing the incoming acceptance range. In addition, it can also compensate the field curvature caused by the chip bending (such as baking thermal stress or other mechanical stress will also cause the photosensitive chip to bend), thereby improving the yield.
  • the at least one imaging lens component includes a first lens component and a second lens component, wherein the first lens component includes a first lens group and the first lens group At least one lens is included; the second lens component includes a second lens group including at least one lens.
  • the pre-positioning step that is, step S10
  • the first lens component, the second lens component, and the field curvature component are pre-positioned so that the first lens group and the second lens group Together with the field curved lens group, an imageable optical system is formed.
  • the active calibration step that is, step S20
  • the active calibration is based on the actual imaging results of the optical system to determine the relative positions of the first lens component, the second lens component, and the curvature of field component Make adjustments.
  • the first lens component and the second lens component are bonded so that the relative positions of the first lens component and the second lens component are maintained in active calibration
  • the sensitivity of the first lens group to imaging sharpness is higher than the field curvature lens group.
  • step S20 by adjusting the position of the first lens component so that the imaging clarity of the optical system reaches the standard, adjust the The position of the field curvature component makes the field curvature of the optical system reach the standard (in another embodiment, the position of the first lens component can be adjusted to achieve the imaging clarity of the optical system, and then the field can be adjusted The position of the curved part makes the field curvature of the optical system reach the standard).
  • the camera module can correct the field curvature of the incoming bad product during the assembly process, thereby relaxing the incoming acceptance range.
  • the assembly of the camera module only requires the preparation of three components that participate in active calibration, which simplifies the process steps and helps improve yield.
  • the field curvature of the optical system can be compensated by adjusting the distance between the field curvature component and the second lens component in the optical axis direction of the optical lens , So that the field curvature of the optical system reaches the standard.
  • the second lens component further includes a motor
  • the motor includes a motor housing and a motor carrier
  • the motor carrier is movably connected to the motor housing
  • the second lens group is mounted on the motor carrier
  • the first lens group includes at least one variable focus liquid lens.
  • FIG. 4 shows a schematic assembly diagram of a camera module according to still another embodiment of the present application.
  • the curvature component 20 further includes a motor 12 including a motor housing 12 a and a motor carrier, and the motor carrier is movably connected to the motor housing.
  • the imaging lens part may not have a motor (for example, the first lens part 10a and the second lens part 10b may not have a motor).
  • the motor housing 12a is fixed to the photosensitive assembly 21 and / or the field curvature lens group 22, and keeps the field curvature lens group 22 and the motor carrier separated from each other.
  • step S30 by bonding the second lens component 10b and the motor carrier (for example, the motor carrier may be cylindrical, the second lens component 10b is bonded inside the cylindrical motor carrier Side) bonding to achieve bonding of the second lens component 10b and the curvature of field component 20.
  • the motor carrier for example, the motor carrier may be cylindrical, the second lens component 10b is bonded inside the cylindrical motor carrier Side
  • FIG. 5 shows an assembly schematic diagram of a camera module according to still another embodiment of the present application.
  • the curvature component 20 further includes a motor 12 including a motor housing 12 a and a motor carrier, and the motor carrier is movably connected to the motor housing 12 a.
  • the field curvature lens group 22 may be fixed to the motor housing, and the field curvature lens group 22 and the motor carrier are kept separated from each other.
  • the imaging lens component for example, the first lens component 10a and the second lens component 10b may not have a motor
  • the motor housing is fixed to the photosensitive assembly 21.
  • the bonding of the imaging lens component and the field curvature component is achieved by bonding the imaging lens component and the motor carrier.
  • the number of the imaging lens components is 2, and the two imaging lens components are a first lens component 10a and a second lens component 10b, respectively.
  • the imaging lens component and the field curvature component may be bonded by bonding the second lens component 10b and the motor carrier, and the first lens component 10a may be bonded to the second lens component 10b.
  • the adhesion of the second lens component 10b to the motor carrier may be determined based on active calibration, and the adhesion of the first lens component 10a and the second lens component 10b may also be determined based on active calibration.
  • the assembly of the optical lens includes the following steps S100 to S300 that are executed in sequence.
  • Step S100 pre-positioning at least one imaging lens component and a field curvature lens component, wherein the field curvature lens component and the imaging lens component are separated from each other, and each of the imaging lens components includes an imaging lens group, each The imaging lens group includes at least one lens, the field curvature lens component includes a field curvature lens group, the field curvature lens group includes at least one lens, and the predetermined position causes the at least one imaging lens group and the field curvature lens Groups together constitute an imageable optical system.
  • Step S200 Actively calibrate the at least one imaging lens component and the field curvature lens component.
  • the active calibration is based on the actual imaging result of the optical system to the at least one imaging lens component and the The relative position of the field curvature lens component is adjusted, wherein the field curvature of the optical system is compensated by adjusting the first gap between the imaging lens component and the field curvature lens component.
  • Step S300 bonding the at least one imaging lens component and the field curvature lens component, so that the relative position of the at least one imaging lens component and the field curvature lens component is maintained at the relative position determined by active calibration.
  • the at least one imaging lens component includes a first lens component and a second lens component, wherein the first lens component includes a first lens group, and the first lens group includes at least one lens; the second lens The component includes a second lens group including at least one lens.
  • pre-positioning step that is, step S100
  • pre-positioning the first lens component, the second lens component, and the field curvature lens component so that the first lens group and the second lens The group and the field curved lens group together constitute an imageable optical system.
  • the active calibration step ie, step S200
  • the active calibration is based on the actual imaging results of the optical system to compare the first lens component, the second lens component, and the field curvature lens component. Position adjustment.
  • the first lens component and the second lens component are bonded so that the relative positions of the first lens component and the second lens component are maintained in active calibration
  • the sensitivity of the first lens group to imaging sharpness is higher than the field curvature lens group.
  • step S200 first adjust the position of the first lens component so that the imaging resolution of the optical system reaches the standard, and then adjust the position of the field curvature lens component so that the optical system The song is up to standard.
  • the optical system may be compensated by adjusting the distance between the field curvature lens component and the second lens component in the optical axis direction of the optical lens Field curvature so that the field curvature of the optical system meets the standard.
  • the second lens component further includes a motor
  • the motor includes a motor housing and a motor carrier
  • the motor carrier is movably connected to the motor housing
  • the second lens The group is mounted on the motor carrier
  • the first lens group includes at least one variable focus liquid lens.
  • the field lens component further includes a motor
  • the motor includes a motor housing and a motor carrier
  • the motor carrier is movably connected to the motor housing.
  • the second lens component may not include a motor.
  • the bonding step ie, step S300
  • the second lens component and the field curvature lens component are bonded by bonding the second lens component and the motor carrier. Further, by bonding the field curvature lens component to the photosensitive component (or otherwise mounted on the photosensitive component), a camera module can be obtained.
  • the bonding step may be replaced by other types of connection steps such as laser welding.
  • any bonding process can be used instead of the bonding process, as long as the bonding process can make the at least one imaging lens component and the field curvature lens component (or field curvature component) relative The position can be maintained at the relative position determined by the active calibration.
  • active calibration process used in the assembly method of the optical lens or camera module will be further described below.
  • active calibration needs to be performed in multiple gaps between multiple components, and the active calibration at the multiple gaps may be performed synchronously.
  • the active calibration between the first lens component and the second lens component, and the active calibration between the second lens component and the field curvature lens component (or field curvature component) may be performed simultaneously.
  • the following uses active calibration between the first lens component and the second lens component as an example.
  • FIG. 10A shows a relative position adjustment method in active calibration in an embodiment of the present application.
  • the first lens component (which may also be the first lens) can move relative to the second lens component in the x, y, and z directions (that is, the relative position adjustment in this embodiment has three Degrees of freedom).
  • the z direction is along the optical axis, and the x and y directions are perpendicular to the optical axis.
  • Both the x and y directions are in an adjustment plane P, and translation in this adjustment plane P can be decomposed into two components in the x and y directions.
  • FIG. 10B shows the rotation adjustment in active calibration according to another embodiment of the present application.
  • the relative position adjustment in addition to the three degrees of freedom of FIG. 10A, the relative position adjustment also increases the rotation degree of freedom, that is, the adjustment in the r direction.
  • the adjustment in the r direction is rotation in the adjustment plane P, that is, rotation around an axis perpendicular to the adjustment plane P.
  • FIG. 10C shows a relative position adjustment manner in which adjustments in the v and w directions are added in active calibration according to yet another embodiment of the present application.
  • the v direction represents the rotation angle of the xoz plane
  • the w direction represents the rotation angle of the yoz plane
  • the rotation angles of the v direction and the w direction can be combined into a vector angle
  • the vector angle represents the total tilt state.
  • the tilt posture of the first lens component relative to the second lens component can be adjusted (that is, the optical axis of the first lens component relative to the optical axis of the second lens component Of the tilt).
  • the above six degrees of freedom adjustments of x, y, z, r, v, and w may all affect the imaging quality of the optical system (eg, affect the resolution).
  • the relative position adjustment method may be to adjust only any one of the above six degrees of freedom, or a combination of any two or more of them.
  • the adjustment of the relative positions of the first lens component and the second lens component includes translation on the adjustment plane, that is, movement in the x and y directions.
  • the adjustment of the relative position of the first lens component and the second lens component further includes: adjusting and determining the axis of the first lens component according to the measured resolution of the optical system The angle with respect to the axis of the second lens component, that is, the adjustment in the w and v directions.
  • an angle between the axis of the first lens component and the axis of the second lens component may be non-zero.
  • the adjustment of the relative positions of the first lens component and the second lens component further includes: moving the first lens component (ie, z) in a direction perpendicular to the adjustment plane Adjustment in direction), according to the measured resolution of the optical system, to determine the relative position between the first lens component and the second lens component in the direction perpendicular to the adjustment plane.
  • the first lens component may not have a first lens barrel.
  • the first lens component may be composed of a single first lens. Before active calibration, corresponding to a predetermined position, so that there is a gap between the bottom surface of the first lens and the top surface of the second lens component; then perform active calibration, and then arrange the glue material in the gap and Allow the glue to cure.
  • the first lens may be formed by a plurality of sub-lenses that are fitted or bonded to each other to form an integrated body.
  • the side surface and the top surface of the non-optical surface of the first lens that are not used for imaging may form a light shielding layer.
  • the light-shielding layer may be formed by screen-printing a light-shielding material on the side and top surfaces of the first lens.
  • the second lens component in the active calibration step, may be fixed, the first lens component may be clamped by a clamp, and the first lens component may be moved by a six-axis motion mechanism connected to the clamp to achieve the first The relative movement between the lens component and the second lens component in the above six degrees of freedom.
  • the clamp can bear or partly bear on the side of the first lens component, thereby clamping the first lens component and adjusting the position with multiple degrees of freedom.
  • the actual imaging result of the optical system composed of a plurality of lens groups can be obtained according to the image data output by the photosensitive chip.
  • active calibration technology a target can be placed on the object side, the photosensitive component can be powered on, and the image data of the target can be directly output by the photosensitive component. Based on the image data, the resolution data of the calibrated optical system can be obtained Then determine whether the imaging quality is up to standard.

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Abstract

一种光学镜头，包括：场曲镜头部件（20），其包括场曲镜片群（22）；第一镜头部件（10a），其包括第一镜片群（10a）；以及第二镜头部件（10b），其包括第二镜片群，第一镜片群、第二镜片群和场曲镜片群（22）共同构成可成像的光学系统，第一镜片群对成像清晰度的敏感度高于场曲镜片群（22）；其中，第一镜片群位于第二镜片群前端，并且第二镜片群位于场曲镜片群（22）的前端；以及场曲镜头部件（20）和第二镜头部件（10b）之间具有第一间隙，并且通过调整第一间隙来补偿光学系统的场曲。还提供了相应的摄像模组。

Description

光学镜头、摄像模组及其组装方法
相关申请的交叉引用
本申请要求于2018年10月31日递交于中国国家知识产权局(CNIPA)的、申请号为201811283162.5、发明名称为“光学镜头、摄像模组及其组装方法”的中国发明专利申请以及2018年10月31日递交于CNIPA的、申请号为201821777271.8、发明名称为“光学镜头和摄像模组”的中国实用新型专利申请的优先权和权益，上述申请通过引用整体并入本文。
技术领域
本申请涉及光学成像技术领域，具体地说，本申请涉及光学镜头、摄像模组及其组装方法。
背景技术
随着手机、电脑等终端的发展，用户对于各项需求都有着不小的提升，尤其随着手机的发展，用户对于拍摄质量的追求，使得厂商发展出了个性化，定制化的摄像模组，例如大光圈，大广角，解决像差而出现的数量较多的镜片的镜头等。一方面，这使得光学设计上越来越复杂；另一方面，复杂的光学系统比较敏感，这对制造的良率和产品质量造成了不小的挑战。例如，手机的紧凑型发展和手机屏占比的增加，让手机内部能够用于前置摄像模组的空间越来越小，而市场对摄像模组的成像质量又提出了越来越高的需求。
在紧凑型摄像模组(例如用于手机的摄像模组)领域，往往需要考虑到光学成像镜头的品质和模组封装过程中的制造误差。具体来说，在光学成像镜头的制造过程中，影响镜头解像力因素来自于各元件及其装配的误差、镜片间隔元件厚度的误差、各镜片的装配配合的误差以及镜片材料折射率的变化等。因为影响镜头解像力的因素非常多， 存在于多个元件中，每个因素的控制都存在制造精度的极限，如果只是单纯提升各个元件的精度，提升能力有限，提升成本高昂，而且不能满足市场日益提高的成像品质需求。
本申请人提出了一种基于主动校准工艺调整和确定上、下子镜头的相对位置，然后将上、下子镜头按照所确定的相对位置粘结在一起，进而制造出完整的光学镜头或摄像模组的组装方法。这种解决方案能够提升大批量生产的光学镜头或摄像模组的过程能力指数(CPK)，提升成像品质。
进一步地，在主动校准过程中，涉及到对摄像模组成像品质的评价。摄像模组性能评价指标包括各个视场位置的解析力峰值和场曲。其中，解析力峰值表征所选定视场的成像清晰程度，场曲又称为像面场曲，其表征各个视场成像清晰位置与中心视场成像清晰位置一致性。在一个例子中，场曲可以定义为所选定视场的成像清晰点位置所拟合平面中心点与理想中心位置的偏差(需注意，这并不是场曲的唯一定义方式，例如场曲有时也可以定义为：所选定视场的成像清晰点位置所拟合像面的曲折程度)。当解析力峰值合格而场曲不良时，整个视场区域无法同时清晰成像；当场曲合格峰值不良时，整个视场区域清晰度均匀，但不够清晰。人们期待场曲峰值二者同时在合格范围内，以获得成像质量更佳的产品。
现有的基于主动校准的镜头产品在主动校正过程中可以校正场曲。然而，现有方案仅有上群相对下群可调，由于上群镜片的位移/旋转对场曲的敏感性较小，想要调整至场曲较佳位置需要进行较大的位移/旋转，进而将牺牲较多的解析力性能。进而需要较久的调整时间或无法获得合格的产品，影响生产效率、产出率。
另一方面，现有技术中还存在一种对镜头与感光组件之间的间隙进行主动校准的技术。这种主动校正无法调整场曲。换句话说，镜头的场曲在组装时就已固定，一旦组装出场曲不良品，后道工序无法修正其不良，从而导致镜头来料报废。另外，感光组件中含有感光芯片，该感光芯片安装于线路板。在组装时，烘烤热应力或其他机械应力也会导致感光芯片弯曲而产生场曲。也就是说，场曲在合格范围内的镜 头来料在与具有一定场曲的芯片半成品(即感光组件)进行组装时，也会导致不良品出现。
发明内容
本申请提供一种能够克服现有技术的至少一个缺陷的解决方案。
根据本申请的一个方面，提供了一种光学镜头，包括：场曲镜头部件，其包括场曲镜片群，所述场曲镜片群包括至少一个透镜；第一镜头部件，其包括第一镜片群，所述第一镜片群包括至少一个透镜；以及第二镜头部件，其包括第二镜片群，所述第二镜片群包括至少一个透镜，所述第一镜片群、所述第二镜片群和所述场曲镜片群共同构成可成像的光学系统，所述第一镜片群对成像清晰度的敏感度高于所述场曲镜片群；其中，所述第一镜片群位于所述第二镜片群前端，并且所述第二镜片群位于所述场曲镜片群的前端；以及所述场曲镜头部件和所述第二镜头部件之间具有第一间隙，并且通过调整所述第一间隙来补偿所述光学系统的场曲。
其中，所述第一镜头部件和所述第二镜头部件通过第二胶材粘合在一起，所述场曲镜头部件和所述第二镜头部件通过第一胶材粘合在一起，所述第二胶材在固化后支撑和固定所述第一镜头部件和所述第二镜头部件，使得所述第一镜头部件和所述第二镜头部件之间的相对位置保持在主动校准所确定的相对位置；并且，所述第一胶材在固化后支撑和固定所述场曲镜头部件和所述第二镜头部件，使得所述场曲镜头部件和所述第二镜头部件之间的相对位置保持在主动校准所确定的相对位置，其中所述主动校准是基于所述光学系统的实际成像结果来对所述第一镜头部件和所述第二镜头部件的相对位置、以及所述第二镜头部件与所述场曲镜头部件的相对位置进行调整。
其中，在同一光学设计下的多个所述光学镜头中至少存在第一光学镜头和第二光学镜头，所述第一光学镜头的所述第一间隙在所述光学镜头的光轴方向上的尺寸不同于所述第二光学镜头的所述第一间隙在所述光学镜头的光轴方向上的尺寸。
其中，所述第二镜头部件还包括马达，所述马达包括马达壳体和 马达载体，所述马达载体与所述马达壳体可活动地连接，所述第二镜片群安装于所述马达载体；所述第一胶材位于所述马达壳体与所述场曲镜头部件之间。
其中，所述场曲镜片群仅具有一个透镜。
根据本申请的另一方面，还提供了一种摄像模组，包括：至少一个成像镜头部件，其中每个所述成像镜头部件包括成像镜片群，所述成像镜片群包括至少一个透镜；以及一个场曲部件，其包括感光组件和固定于所述感光组件的场曲镜片群，所述场曲镜片群包括至少一个透镜，所有所述成像镜片群与所述场曲镜片群共同构成可成像的光学系统；其中，所述场曲部件和所述成像镜头部件之间具有第一间隙，并且通过调整所述第一间隙来补偿所述光学系统的场曲。
其中，所述至少一个成像镜头部件包括：第一镜头部件，其包括第一镜片群，所述第一镜片群包括至少一个透镜；以及第二镜头部件，其包括第二镜片群，所述第二镜片群包括至少一个透镜，所述第一镜片群、所述第二镜片群和所述场曲镜片群共同构成可成像的光学系统，并且所述第一镜片群对成像清晰度的敏感度高于所述场曲镜片群；其中，所述场曲部件与所述成像镜头部件通过布置于所述第一间隙的第一胶材粘合，并且所述第一胶材在固化后支撑和固定所述场曲部件与所述成像镜头部件，使得所述场曲部件与所述成像镜头部件之间的相对位置保持在主动校准所确定的相对位置；所述第一镜头部件和所述第二镜头部件通过第二胶材粘合在一起，所述第二胶材在固化后支撑和固定所述第一镜头部件和所述第二镜头部件，使得所述第一镜头部件和所述第二镜头部件之间的相对位置保持在主动校准所确定的相对位置。
其中，在同一光学设计下的多个所述摄像模组中至少存在第一摄像模组和第二摄像模组，所述第一摄像模组的所述第一间隙在所述摄像模组的光轴方向上的尺寸不同于所述第二摄像模组的所述第一间隙在所述摄像模组的光轴方向上的尺寸。
其中，所述场曲镜片群仅具有一个透镜，所述第一镜片群位于所述第二镜片群的前端，所述第二镜片群位于所述第一镜片群和所述场 曲镜片群之间。
其中，所述第二镜头部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接，所述第二镜片群安装于所述马达载体；所述第一胶材位于所述马达壳体与所述场曲部件之间；以及所述第一镜片群包括至少一个可变焦的液体镜片。
其中，所述成像镜头部件的数目为一个，所述成像镜头部件包括还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接，所述成像镜头部件安装于所述马达载体。
其中，所述感光组件包括感光芯片，所述光学系统的实际成像结果根据所述感光芯片输出的图像数据得出。
其中，所述感光组件还包括：线路板，所述感光芯片安装于所述线路板的表面；镜座，其安装或形成于所述线路板的表面并围绕在所述感光芯片周围；以及滤色片，其安装于所述镜座；其中所述场曲镜片群承靠于所述镜座的顶面和/或所述滤色片的顶面。
其中，所述第一胶材位于所述镜座与所述马达壳体之间，所述场曲镜片群与所述马达载体彼此分离。
其中，所述场曲镜片群包括微透镜阵列。
根据本申请的另一方面，还提供了一种光学镜头组装方法，包括：对至少一个成像镜头部件和场曲镜头部件进行预定位，其中所述场曲镜头部件和所述成像镜头部件彼此分离，每个所述成像镜头部件包括一个成像镜片群，每个所述成像镜片群包括至少一个透镜，所述场曲镜头部件包括场曲镜片群，所述场曲镜片群包括至少一个透镜，所述预定位使所述至少一个成像镜片群与所述场曲镜片群共同构成可成像的光学系统；对所述的至少一个成像镜头部件和所述场曲镜头部件进行主动校准，所述主动校准是基于所述光学系统的实际成像结果来对所述的至少一个成像镜头部件和所述场曲镜头部件的相对位置进行调整；其中通过调整成像镜头部件和所述场曲镜头部件之间的第一间隙来补偿所述光学系统的场曲；以及连接所述的至少一个成像镜头部件和所述场曲镜头部件，使所述的至少一个成像镜头部件和所述场曲镜头部件的相对位置保持在主动校准所确定的相对位置。
其中，所述准备中，所述至少一个成像镜头部件包括第一镜头部件和第二镜头部件，其中所述第一镜头部件包括第一镜片群，所述第一镜片群包括至少一个透镜；所述第二镜头部件包括第二镜片群，所述第二镜片群包括至少一个透镜；所述预定位中，对所述第一镜头部件、所述第二镜头部件和所述场曲镜头部件进行预定位，使得所述第一镜片群、所述第二镜片群和所述场曲镜片群共同构成可成像的光学系统；所述主动校准中，所述主动校准是基于所述光学系统的实际成像结果来对所述第一镜头部件、所述第二镜头部件和所述场曲镜头部件的相对位置进行调整；以及所述连接中，将所述第一镜头部件与所述第二镜头部件粘合，使得所述第一镜头部件与所述第二镜头部件的相对位置保持在主动校准所确定的相对位置，以及将所述第二镜头部件与所述场曲镜头部件粘合，使得所述第二镜头部件与所述场曲镜头部件的相对位置保持在主动校准所确定的相对位置。
其中，所述准备中，所述第一镜片群对成像清晰度的敏感度高于所述场曲镜片群；以及所述主动校准中，通过调整所述第一镜头部件的位置使得所述光学系统的成像清晰度达标，通过调整所述场曲镜头部件的位置使得所述光学系统的场曲达标。
其中，所述主动校准中，通过调节所述场曲镜头部件与所述第二镜头部件在所述光学镜头的光轴方向的距离，来补偿所述光学系统的场曲，以使得所述光学系统的场曲达标。
其中，所述准备中，所述第二镜头部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接，所述第二镜片群安装于所述马达载体，并且所述第一镜片群包括至少一个可变焦的液体镜片；以及所述连接中，通过将所述马达壳体与所述场曲镜头部件的粘合来实现所述第二镜头部件与所述场曲镜头部件的粘合。
根据本申请的另一方面，还提供了一种摄像模组组装方法，其包括：对至少一个成像镜头部件和场曲部件进行预定位，其中所述场曲部件和所述成像镜头部件彼此分离，每个所述成像镜头部件包括一个成像镜片群，每个所述成像镜片群包括至少一个透镜，所述场曲部件 包括感光组件和固定于所述感光组件的场曲镜片群，所述场曲镜片群包括至少一个透镜，所述预定位使所述成像镜片群与所述场曲镜片群共同构成可成像的光学系统；对所述的至少一个成像镜头部件和所述场曲部件进行主动校准，所述主动校准是基于所述光学系统的实际成像结果来对所述的至少一个成像镜头部件和所述场曲部件的相对位置进行调整；其中通过调整成像镜头部件和所述场曲部件之间的第一间隙来补偿所述光学系统的场曲；以及连接所述的至少一个成像镜头部件和所述场曲部件，使所述的至少一个成像镜头部件和所述场曲部件的相对位置保持在主动校准所确定的相对位置。
其中，所述准备中，所述至少一个成像镜头部件包括第一镜头部件和第二镜头部件，其中所述第一镜头部件包括第一镜片群，所述第一镜片群包括至少一个透镜；所述第二镜头部件包括第二镜片群，所述第二镜片群包括至少一个透镜；所述预定位中，对所述第一镜头部件、所述第二镜头部件和所述场曲部件进行预定位，使得所述第一镜片群、所述第二镜片群和所述场曲镜片群共同构成可成像的光学系统；所述主动校准中，所述主动校准是基于所述光学系统的实际成像结果来对所述第一镜头部件、所述第二镜头部件和所述场曲部件的相对位置进行调整；以及所述连接中，将所述第一镜头部件与所述第二镜头部件粘合，使得所述第一镜头部件与所述第二镜头部件的相对位置保持在主动校准所确定的相对位置，以及将所述第二镜头部件与所述场曲部件粘合，使得所述第二镜头部件与所述场曲部件的相对位置保持在主动校准所确定的相对位置。
其中，所述准备中，所述第一镜片群对成像清晰度的敏感度高于所述场曲镜片群；以及所述主动校准中，通过调整所述第一镜头部件的位置使得所述光学系统的成像清晰度达标，通过调整所述场曲部件的位置使得所述光学系统的场曲达标。
其中，所述主动校准中，通过调节所述场曲部件与所述第二镜头部件在所述摄像模组的光轴方向的距离，来补偿所述光学系统的场曲，以使得所述光学系统的场曲达标。
其中，所述准备中，所述第二镜头部件还包括马达，所述马达包 括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接，所述第二镜片群安装于所述马达载体，并且所述第一镜片群包括至少一个可变焦的液体镜片；以及所述连接中，通过将所述马达壳体与所述场曲部件的粘合来实现所述第二镜头部件与所述场曲部件的粘合。
其中，所述准备中，所述场曲部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接；所述准备还包括：将所述马达壳体固定于所述感光组件和/或所述场曲镜片群，并使所述场曲镜片群与所述马达载体保持彼此分离的状态；以及所述连接中，通过将所述第二镜头部件与所述马达载体粘合来实现所述第二镜头部件与所述场曲部件的粘合。
其中，所述准备中，所述场曲部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接；所述准备还包括：将所述马达壳体固定于所述感光组件和/或所述场曲镜片群，并使所述场曲镜片群与所述马达载体保持彼此分离的状态；以及所述连接中，通过将所述成像镜头部件与所述马达载体粘合来实现所述成像镜头部件与所述场曲部件的粘合。
其中，所述准备中，所述场曲镜头部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接；以及所述连接中，通过将所述第二镜头部件与所述马达载体粘合来实现所述第二镜头部件与所述场曲镜头部件的粘合。
根据本申请的另一方面，还提供了一种摄像模组组装方法，其包括：按前述任一光学镜头组装方法组装光学镜头；以及将所述光学镜头安装于感光组件得到摄像模组。
与现有技术相比，本申请具有下列至少一个技术效果：
1、本申请可以在摄像模组或光学镜头组装过程中对来料不良品的场曲进行修正，从而放宽了来料的允收范围。
2、本申请可以在摄像模组组装过程中补偿芯片弯曲(例如烘烤热应力或其他机械应力也会导致感光芯片弯曲)而造成的场曲，从而提升良率。
3、本申请可以在补偿场曲的同时，保证解像力峰值不过多劣 化，从而整体提高成像质量。
附图说明
在参考附图中示出示例性实施例。本文中公开的实施例和附图应被视作说明性的，而非限制性的。
图1示出了本申请一个实施例的摄像模组的组装示意图；
图2示出了本申请另一个实施例的摄像模组的组装示意图；
图3示出了本申请又一个实施例的摄像模组的组装示意图；
图4示出了本申请再一个实施例的摄像模组的组装示意图；
图5示出了本申请再一个实施例的摄像模组的组装示意图；
图6示出了本申请一个实施例中场曲镜头部件由单个透镜构成时的光学镜头组装示意图；
图7示出了本申请另一个实施例中场曲镜头部件包括镜筒时的光学镜头组装示意图；
图8示出了本申请一个实施例中场曲镜头部件由单个透镜构成时的摄像模组的组装示意图；
图9示出了本申请另一个实施例中场曲镜头部件包括镜筒时的摄像模组的组装示意图；
图10A示出了本申请一个实施例中的主动校准中相对位置调节方式；
图10B示出了本申请另一个实施例的主动校准中的旋转调节；
图10C示出了本申请又一个实施例的主动校准中的增加了v、w方向调节的相对位置调节方式。
具体实施方式
为了更好地理解本申请，将参考附图对本申请的各个方面做出更详细的说明。应理解，这些详细说明只是对本申请的示例性实施方式的描述，而非以任何方式限制本申请的范围。在说明书全文中，相同的附图标号指代相同的元件。表述“和/或”包括相关联的所列项目中的一个或多个的任何和全部组合。
应注意，在本说明书中，第一、第二等的表述仅用于将一个特征与另一个特征区分开来，而不表示对特征的任何限制。因此，在不背离本申请的教导的情况下，下文中讨论的第一主体也可被称作第二主体。
在附图中，为了便于说明，已稍微夸大了物体的厚度、尺寸和形状。附图仅为示例而并非严格按比例绘制。
还应理解的是，用语“包括”、“包括有”、“具有”、“包含”和/或“包含有”，当在本说明书中使用时表示存在所陈述的特征、整体、步骤、操作、元件和/或部件，但不排除存在或附加有一个或多个其它特征、整体、步骤、操作、元件、部件和/或它们的组合。此外，当诸如“...中的至少一个”的表述出现在所列特征的列表之后时，修饰整个所列特征，而不是修饰列表中的单独元件。此外，当描述本申请的实施方式时，使用“可以”表示“本申请的一个或多个实施方式”。并且，用语“示例性的”指代示例或举例说明。
如在本文中使用的，用语“基本上”、“大约”以及类似的用语用作表近似的用语，而不用作表程度的用语，并且说明将由本领域普通技术人员认识到的、测量值或计算值中的固有偏差。
除非另外限定，否则本文中使用的所有用语(包括技术用语和科学用语)均具有与本申请所属领域普通技术人员的通常理解相同的含义。还应理解的是，用语(例如在常用词典中定义的用语)应被解释为具有与它们在相关技术的上下文中的含义一致的含义，并且将不被以理想化或过度正式意义解释，除非本文中明确如此限定。
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。
图1示出了本申请一个实施例的摄像模组的组装示意图。如图1所示，本实施例的摄像模组包括：一个成像镜头部件10、一个场曲部件20以及第一胶材(图1分别示出了成像镜头部件10和场曲部件20，但并未示出第一胶材)。其中，成像镜头部件10包括成像镜片群11， 所述成像镜片群11包括至少一个透镜(成像镜片群11可以是单个透镜，也可以由多个透镜构成)。场曲部件20包括感光组件21和固定于所述感光组件的场曲镜片群22，所述场曲镜片群22包括至少一个透镜(场曲镜片群可以是对场曲敏感的单个透镜，也可以由多个对场曲敏感的透镜构成)，所述成像镜片群11与所述场曲镜片群22共同构成可成像的光学系统，并且所述场曲镜片群的场曲敏感度可以高于所述成像镜片群(需注意，在本申请的其它实施例中，所述场曲镜片群的场曲敏感度也可以不高于成像镜片群，下文中会结合其它实施例做进一步地描述)。第一胶材布置于所述场曲部件与所述成像镜头部件之间的间隙，并且所述第一胶材在固化后支撑和固定所述场曲部件与所述成像镜头部件，使得所述场曲部件与所述成像镜头部件之间的相对位置保持在主动校准所确定的相对位置，其中所述主动校准是基于所述光学系统的实际成像结果来对所述的成像镜头部件和所述场曲部件的相对位置进行调整。镜片或镜片群的场曲敏感度(有时也被称为场曲敏感性)可以通过模拟仿真各镜片的制造公差和组装公差对场曲(通常为选定视场下的场曲)的影响程度来判断。有时市场上购买的镜头会直接提供敏感度分析表，根据该敏感度分析表即可直接获得各个镜片或(镜片群)的场曲敏感度信息。根据这些场曲敏感度信息，即可确定所设计光学系统中，哪个或哪些透镜构成场曲镜片群，哪个或哪些透镜组成成像镜片群。本实施例所提供的摄像模组在组装过程中可对来料不良品的场曲进行修正，从而放宽了来料的允收范围。另外，还可以补偿芯片弯曲(例如烘烤热应力或其他机械应力也会导致感光芯片弯曲)而造成的场曲，从而提升良率。
需注意，本申请的其它一些实施例中，场曲镜片群可以不是摄像模组中场曲敏感度最大的镜片群。例如，在一个实施例中，场曲镜片群可以是光学设计中位于最下方(即最后端)的一个透镜，在主动校准阶段，通过调整该透镜与成像镜头部件在光轴(指摄像模组的光轴)方向上的距离，即可调整所述光学系统的场曲，从而补偿场曲。其中，仅在光轴方向上移动场曲镜片群，可以实现对光学系统场曲的调整，同时不影响光学系统的其它成像品质指标(例如所选定视场的成像清 晰度)。当场曲镜片群由单个透镜构成时，可以不需要为场曲部件配置单独的镜筒，而是将场曲镜片直接固定于感光组件。进一步地，在一个实施例中，场曲镜片群可以仅由单个场曲镜片构成，该场曲镜片可以承靠于感光组件(例如可以承靠于感光组件的滤色片)。当镜头来料的场曲不能达标时，可以使用上述场曲部件(场曲镜片直接固定于感光组件而形成的场曲部件)对场曲进行补偿，从而得到成像品质达标的摄像模组产品。
在一个实施例中，所述第一胶材布置于所述第二镜头部件与所述场曲部件之间的第一间隙，在光学设计上，所述第一间隙在所述光学镜头的光轴方向上的设计尺寸至少为50微米。需注意，由于主动校准是根据实际成像结果对部件间的相对位置进行调节，也就是根据实际成像结果对部件之间的间隙(例如所述第一间隙)进行调节，因此在主动校准完成后，第一间隙的尺寸可能会与设计尺寸不同。进一步地，本实施例中，对于同一光学设计下的同批次产品，可以找到至少两个光学镜头(或两个摄像模组)，这两个光学镜头(或两个摄像模组)的第一间隙在所述光学镜头的光轴方向上的尺寸是不同的。换句话说，对于同一光学设计下的同批次产品，可以找到至少两个光学镜头(或两个摄像模组)，这两个光学镜头(或两个摄像模组)的第一胶材的厚度(指在光轴方向的厚度)是不同的。反过来说，当同一光学设计下的同批次产品中多个光学镜头(或多个摄像模组)的第一胶材厚度(指在光轴方向的厚度)不同时，可视为该批次产品是对第一间隙进行主动校准后组装的产品。对第一间隙进行主动校准后组装的产品中，第一胶材布置于所述场曲部件与所述成像镜头部件(或下文中将描述的第二镜头部件)之间的第一间隙，并且所述第一胶材在固化后支撑和固定所述场曲部件与所述成像镜头部件(或下文中将描述的第二镜头部件)，使得所述场曲部件与所述成像镜头部件(或下文中将描述的第二镜头部件)之间的相对位置保持在主动校准所确定的相对位置。进一步地，仍然参考图1，在本申请一个实施例中，所述成像镜头部件包括还包括马达12。所述马达12包括马达壳体12a和马达载体(需注意，图1中未示出马达载体)，所述马达载体与所述马达壳体可活动 地连接，例如通过弹片(也可以称为簧片)将所述马达载体与所述马达壳体可活动地连接。马达载体可以呈筒状，所述成像镜头部件安装于所述马达载体。本实施例的摄像模组可进一步地实现自动对焦或光学防抖等基于马达的功能。
进一步地，仍然参考图1，在本申请一个实施例中，所述感光组件21包括感光芯片21a、线路板21b、镜座21c和滤色片21d。其中，主动校准所需的实际成像结果根据所述感光芯片21a输出的图像数据得出。所述感光芯片21a安装于所述线路板21b的表面。镜座21c安装或形成于所述线路板21b的表面并围绕在所述感光芯片21a周围。滤色片21d安装于所述镜座21c。所述场曲镜片群22承靠于所述镜座21c的顶面和/或所述滤色片21d的顶面。主动校准在成像镜头部件与带有感光组件的场曲部件之间进行。所述第一胶材可以位于所述镜座21c与所述马达壳体12a之间，所述场曲镜片群22与所述马达载体彼此分离。此处，彼此分离是指场曲镜片群与马达载体不直接接触，也不通过胶材互相粘结。
图2示出了本申请另一个实施例的摄像模组的组装示意图。本实施例中，成像镜头部件10的数目为一个，该成像镜头部件10不包括马达。场曲部件20包括马达12。具体地，所述马达12包括马达壳体12a和马达载体，所述马达载体可以是筒形的，所述马达载体与所述马达壳体12a可活动地连接，例如通过弹片12b(也可以称为簧片，在一个例子中，为提高稳定性，可以设置上弹片和下弹片，需注意图2中的12b仅示出了上弹片)将所述马达载体与所述马达壳体12a可活动地连接。主动校准在成像镜头部件与带有马达和感光组件的场曲部件之间进行。所述第一胶材位于所述马达载体与所述成像镜头部件10之间。在一个例子中，成像镜头部件10可以具有镜筒，多个透镜通过该镜筒组立在一起构成所述成像镜头部件10。此时，所述第一胶材位于所述马达载体的内侧面与所述镜筒的外侧面之间。
图3示出了本申请又一个实施例的摄像模组的组装示意图。本实施例中，摄像模组包括两个成像镜头部件、一个场曲部件20、第一胶材和第二胶材。其中两个成像镜头部件分别是第一镜头部件10a和第 二镜头部件10b。第一镜头部件10a包括第一镜片群，所述第一镜片群包括至少一个透镜。第二镜头部件10b包括第二镜片群，所述第二镜片群包括至少一个透镜，所述第一镜片群、所述第二镜片群和所述场曲镜片群22共同构成可成像的光学系统，并且所述第一镜片群对成像清晰度的敏感度高于所述场曲镜片群22。第一胶材布置于所述场曲部件20与所述成像镜头部件之间的间隙(本实施例中第一胶材布置于所述场曲部件20与所述第二镜头部件10b之间的间隙)，并且所述第一胶材在固化后支撑和固定所述场曲部件与所述成像镜头部件，使得所述场曲部件与所述成像镜头部件之间的相对位置保持在主动校准所确定的相对位置，其中所述主动校准是基于所述光学系统的实际成像结果来对所述的成像镜头部件和所述场曲部件的相对位置进行调整。所述第一镜头部件10a和所述第二镜头部件10b通过第二胶材粘合在一起，所述第二胶材在固化后支撑和固定所述第一镜头部件和所述第二镜头部件，使得所述第一镜头部件和所述第二镜头部件之间的相对位置保持在主动校准所确定的相对位置。镜片或镜片群的对成像清晰度的敏感度(有时敏感度也被称为敏感性)可以通过模拟仿真各镜片的制造公差和组装公差对成像清晰度(通常为选定视场下的成像清晰度)的影响程度来判断。有时市场上购买的镜头会直接提供敏感度分析表，根据该敏感度分析表即可直接获得各个镜片或(镜片群)对成像清晰度的敏感度信息。根据这些信息，即可确定所设计光学系统中，哪个或哪些透镜对成像清晰度的敏感度较高，哪个或哪些透镜对成像清晰度的敏感度较低。在一些实施例中，成像清晰度可以用解像力峰值(例如MTF曲线的峰值)来表征。本实施例中，摄像模组在组装过程中可对来料不良品的场曲进行修正，从而放宽了来料的允收范围。另外，还可以补偿芯片弯曲(例如烘烤热应力或其他机械应力也会导致感光芯片弯曲)而造成的场曲，从而提升良率。再者，在补偿场曲的同时，还可以保证解像力峰值不过多劣化，从而整体提高成像质量。
进一步地，仍然参考图3，在本申请的一个实施例中，所述第二镜头部件还包括马达12，所述马达12包括马达壳体12a和马达载体，所述马达载体与所述马达壳体12a可活动地连接，例如通过弹片12b (也可以称为簧片)将所述马达载体与所述马达壳体可活动地连接。所述第二镜片群安装于所述马达载体。所述第一胶材位于所述马达壳体12a与所述场曲部件20之间。本实施例的摄像模组可进一步地实现自动对焦或光学防抖等基于马达的功能。
进一步地，仍然参考图3，在本申请的一个实施例中，所述第一镜片群包括至少一个可变焦的液体镜片，从而构成变焦摄像模组。其中，可以通过电改变第一镜头部件10a中液体镜片的液面形状，并在第二镜头部件10b中通过马达带动第二镜片群移动，实现变焦并将像面保持在感光芯片平面上。这样，本实施例的变焦摄像模组可以实现无级变焦。
进一步地，在一个实施例中，所述场曲镜片群22可以包括微透镜阵列，该微透镜阵列可以固定于感光组件并通过搭载相应算法来实现重聚焦功能。
进一步地，仍然参考图3，在本申请的一个实施例中，所述第一镜片群位于所述第二镜片群的前端，所述第二镜片群位于所述第一镜片群和所述场曲镜片群之间。其中，前端是指所述摄像模组或光学镜头的靠近物方的一端。
前述实施例中所叙述的光学器件均为摄像模组。根据本申请的其它一些实施例，还提供了相应的光学镜头。
在一个实施例中，所述光学镜头包括一个成像镜头部件和一个场曲镜头部件。其中，成像镜头部件包括成像镜片群，所述成像镜片群包括至少一个透镜。场曲镜头部件包括场曲镜片群，所述场曲镜片群包括至少一个透镜，所述成像镜片群与所述场曲镜片群共同构成可成像的光学系统。本实施例中，所述场曲镜片群的场曲敏感度可以高于所述成像镜片群(需注意，在其它实施例中，场曲镜片群的场曲敏感度可以不高于所述成像镜片群)。该光学镜头还包括第一胶材，其布置于所述场曲镜头部件与所述成像镜头部件之间的间隙，并且所述第一胶材在固化后支撑和固定所述场曲镜头部件与所述成像镜头部件，使得所述场曲镜头部件与所述成像镜头部件之间的相对位置保持在主动 校准所确定的相对位置，其中所述主动校准是基于所述光学系统的实际成像结果来对所述至少一个成像镜头部件和所述场曲镜头部件的相对位置进行调整。镜片或镜片群的场曲敏感度(有时也被称为场曲敏感性)可以通过模拟仿真各镜片的制造公差和组装公差对场曲(通常为选定视场下的场曲)的影响程度来判断。有时市场上购买的镜头会直接提供敏感度分析表，根据该敏感度分析表即可直接获得各个镜片或(镜片群)的场曲敏感度信息。根据这些场曲敏感度信息，即可确定所设计光学系统中，哪个或哪些透镜构成场曲镜片群，哪个或哪些透镜组成成像镜片群。
需注意，本申请的其它一些实施例中，场曲镜片群可以不是光学镜头中场曲敏感度最大的镜片群。例如，在一个实施例中，场曲镜片群可以是光学设计中位于最下方(即最后端)的一个透镜，在主动校准阶段，通过调整该透镜与成像镜头部件在光轴(指光学镜头的光轴)方向上的距离，即可调整所述光学系统的场曲，从而补偿所述光学系统的场曲。其中，仅在光轴方向上移动场曲镜片群，可以实现对光学系统场曲的调整，同时不影响光学系统的其它成像品质指标(例如所选定视场的成像清晰度)。
进一步地，在一个实施例中，所述光学镜头中，所述成像镜头部件的数目为两个，分别是第一镜头部件和第二镜头部件。其中第一镜头部件包括第一镜片群，所述第一镜片群包括至少一个透镜。第二镜头部件包括第二镜片群，所述第二镜片群包括至少一个透镜，所述第一镜片群、所述第二镜片群和所述场曲镜片群共同构成可成像的光学系统，并且所述第一镜片群对成像清晰度的敏感度高于所述场曲镜片群。所述第一镜头部件和所述第二镜头部件通过第二胶材粘合在一起，所述第二胶材在固化后支撑和固定所述第一镜头部件和所述第二镜头部件，使得所述第一镜头部件和所述第二镜头部件之间的相对位置保持在主动校准所确定的相对位置。镜片或镜片群的对成像清晰度的敏感度(有时敏感度也被称为敏感性)可以通过模拟仿真各镜片的制造公差和组装公差对成像清晰度(通常为选定视场下的成像清晰度)的影响程度来判断。有时市场上购买的镜头会直接提供敏感度分析表， 根据该敏感度分析表即可直接获得各个镜片或(镜片群)对成像清晰度的敏感度信息。根据这些信息，即可确定所设计光学系统中，哪个或哪些透镜对成像清晰度的敏感度较高，哪个或哪些透镜对成像清晰度的敏感度较低。在一些实施例中，成像清晰度可以用解像力峰值(MTF曲线的峰值)来表征。进一步地，在一个实施例中，场曲镜头部件可以由单个透镜构成，图6示出了本申请一个实施例中场曲镜头部件由单个透镜构成时的光学镜头组装示意图。本实施例中，光学镜头由第一镜头部件10a、第二镜头部件10b和场曲镜头部件20a通过主动校准组装而成，其中场曲镜头部件20a可以由单个透镜构成(该透镜可以是无镜筒的裸透镜)。图7示出了本申请另一个实施例中场曲镜头部件包括镜筒时的光学镜头组装示意图。本实施例中，场曲镜头部件20a可以包括镜筒和安装在镜筒中的一个或多个透镜。
图8示出了本申请一个实施例中场曲镜头部件由单个透镜构成时的摄像模组的组装示意图。参考图8，图6实施例的光学镜头100(指组装好的光学镜头100)可以安装于马达的马达载体内，然后再将马达12与光学镜头100的组合体(可称为马达镜头组件)安装于感光组件200，从而获得动焦摄像模组(例如自动对焦摄像模组)。图9示出了本申请另一个实施例中场曲镜头部件包括镜筒时的摄像模组的组装示意图。参考图9，图7实施例的光学镜头100(指组装好的光学镜头100)可以安装于马达的马达载体内，然后再将马达12与光学镜头100的组合体(可称为马达镜头组件)安装于感光组件200，从而获得动焦摄像模组(例如自动对焦摄像模组)。
进一步地，在一个实施例中，所述光学镜头中，所述第二镜头部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接，所述第二镜片群安装于所述马达载体。所述第一胶材位于所述马达壳体与所述场曲镜头部件之间。
进一步地，在一个实施例中，所述光学镜头中，所述第一镜片群包括至少一个可变焦的液体镜片。本实施例中，第一镜头部件和第二镜头部件均可变焦，从而构成变焦光学镜头。其中，第一镜头部件中，可以通过电改变液体镜片的液面形状，从而实现变焦或对焦。第二镜 头部件中，通过马达带动第二镜片群移动，实现变焦或对焦。
根据本申请的一系列实施例，还提供了摄像模组组装方法。
参考图1，在一个实施例成像镜片群中，摄像模组组装方法包括下述依序执行的步骤S10至步骤S30。
步骤S10，对至少一个成像镜头部件和所述场曲部件进行预定位，其中所述场曲部件和所述成像镜头部件彼此分离，每个所述成像镜头部件包括一个成像镜片群，每个所述成像镜片群包括至少一个透镜，所述场曲部件包括感光组件和固定于所述感光组件的场曲镜片群，所述场曲镜片群包括至少一个透镜，所述预定位使所述成像镜片群与所述场曲镜片群共同构成可成像的光学系统。其中，预定位可以包括：使用激光测高等方法分别获得成像镜头部件和场曲部件的位置和姿态信息，然后将它们调整至预定的初始位置。这里初始位置是指主动校准的初始位置。换句话说，本步骤可以视为对成像镜头部件和场曲部件的位置进行粗调。
步骤S20，对所述的至少一个成像镜头部件和所述场曲部件进行主动校准，所述主动校准是基于所述光学系统的实际成像结果来对所述的至少一个成像镜头部件和所述场曲部件的相对位置进行调整，其中通过调整成像镜头部件和所述场曲镜头部件之间的第一间隙来补偿所述光学系统的场曲。本步骤可以视为对成像镜头部件和场曲部件的位置进行精调。
步骤S30，粘合所述的至少一个成像镜头部件和所述场曲部件，使所述的至少一个成像镜头部件和所述场曲部件的相对位置保持在主动校准所确定的相对位置。粘合通常包括画胶和固化(即将胶材固化)两个子步骤。画胶步骤可以在主动校准之前执行，也可以在主动校准完成后执行。
粘合完成后，即可得到基于主动校准的摄像模组。本实施例中，摄像模组在组装过程中可对来料不良品的场曲进行修正，从而放宽了来料的允收范围。另外，还可以补偿芯片弯曲(例如烘烤热应力或其他机械应力也会导致感光芯片弯曲)而造成的场曲，从而提升良率。
进一步地，参考图3，在一个实施例中，所述至少一个成像镜头部件包括第一镜头部件和第二镜头部件，其中所述第一镜头部件包括第一镜片群，所述第一镜片群包括至少一个透镜；所述第二镜头部件包括第二镜片群，所述第二镜片群包括至少一个透镜。所述预定位步骤(即步骤S10)中，对所述第一镜头部件、所述第二镜头部件和所述场曲部件进行预定位，使得所述第一镜片群、所述第二镜片群和所述场曲镜片群共同构成可成像的光学系统。所述主动校准步骤(即步骤S20)中，所述主动校准是基于所述光学系统的实际成像结果来对所述第一镜头部件、所述第二镜头部件和所述场曲部件的相对位置进行调整。所述粘合步骤(即步骤S30)中，将所述第一镜头部件与所述第二镜头部件粘合，使得所述第一镜头部件与所述第二镜头部件的相对位置保持在主动校准所确定的相对位置，以及将所述第二镜头部件与所述场曲部件粘合，使得所述第二镜头部件与所述场曲部件的相对位置保持在主动校准所确定的相对位置。
进一步地，仍然参考图3，在一个实施例中，所述第一镜片群对成像清晰度的敏感度高于所述场曲镜片群。
进一步地，仍然参考图3，在一个实施例中，所述主动校准步骤(即步骤S20)中，通过调整所述第一镜头部件的位置使得所述光学系统的成像清晰度达标，调整所述场曲部件的位置使得所述光学系统的场曲达标(在另一个实施例中，可以先通过调整所述第一镜头部件的位置使得所述光学系统的成像清晰度达标，然后调整所述场曲部件的位置使得所述光学系统的场曲达标)。本实施例中，摄像模组在组装过程中可对来料不良品的场曲进行修正，从而放宽了来料的允收范围。另外，还可以补偿芯片弯曲(例如烘烤热应力或其他机械应力也会导致感光芯片弯曲)而造成的场曲，从而提升良率。再者，在补偿场曲的同时，还可以保证解像力峰值不过多劣化，从而整体提高成像质量。此外，摄像模组的组装只需要准备三个参与主动校准的部件，使得工艺步骤较为简化，有助于提升良率。进一步地，在一个实施例中，所述主动校准步骤中，可以通过调节所述场曲部件与所述第二镜头部件在所述光学镜头的光轴方向的距离，来补偿光学系统的场曲，以使得 所述光学系统的场曲达标。
进一步地，仍然参考图3，在一个实施例中，所述第二镜头部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接，所述第二镜片群安装于所述马达载体，并且所述第一镜片群包括至少一个可变焦的液体镜片。所述粘合步骤(即步骤S30)中，通过将所述马达壳体与所述场曲部件的粘合来实现所述第二镜头部件与所述场曲部件的粘合。
进一步地，图4示出了本申请再一个实施例的摄像模组的组装示意图。参考图4，在一个实施例中所述场曲部件20还包括马达12，所述马达12包括马达壳体12a和马达载体，所述马达载体与所述马达壳体可活动地连接。这种情形下，成像镜头部件可以不具有马达(例如第一镜头部件10a和第二镜头部件10b可以不具有马达)。所述马达壳体12a固定于所述感光组件21和/或所述场曲镜片群22，并使所述场曲镜片群22与所述马达载体保持彼此分离的状态。所述粘合步骤(即步骤S30)中，通过将所述第二镜头部件10b与所述马达载体(例如马达载体可以是筒形的，第二镜头部件10b粘结在筒形马达载体的内侧面)粘合来实现所述第二镜头部件10b与所述场曲部件20的粘合。
进一步地，图5示出了本申请再一个实施例的摄像模组的组装示意图。参考图5，在一个实施例中，所述场曲部件20还包括马达12，所述马达12包括马达壳体12a和马达载体，所述马达载体与所述马达壳体12a可活动地连接。所述场曲镜片群22可以固定于马达壳体，并且所述场曲镜片群22与所述马达载体保持彼此分离的状态。这种情形下，成像镜头部件(例如第一镜头部件10a和第二镜头部件10b可以不具有马达)可以不具有马达。所述马达壳体固定于所述感光组件21。所述粘合步骤(即步骤S30)中，通过将所述成像镜头部件与所述马达载体粘合来实现所述成像镜头部件与所述场曲部件的粘合。图5中，所述成像镜头部件的个数为2，两个成像镜头部件分别是第一镜头部件10a和第二镜头部件10b。可以通过第二镜头部件10b与所述马达载体的粘合来实现所述成像镜头部件与所述场曲部件的粘合，第一镜 头部件10a则可以与第二镜头部件10b粘合。第二镜头部件10b与所述马达载体的粘合可以基于主动校准来确定相对位置，第一镜头部件10a与第二镜头部件10b的粘合也可以基于主动校准来确定相对位置。
进一步地，本申请的一些实施例中，还提供了相应的光学镜头组装方法。
所述光学镜头组装包括依序执行的下述步骤S100至S300。
步骤S100，对至少一个成像镜头部件和场曲镜头部件进行预定位，其中所述场曲镜头部件和所述成像镜头部件彼此分离，每个所述成像镜头部件包括一个成像镜片群，每个所述成像镜片群包括至少一个透镜，所述场曲镜头部件包括场曲镜片群，所述场曲镜片群包括至少一个透镜，所述预定位使所述至少一个成像镜片群与所述场曲镜片群共同构成可成像的光学系统。
步骤S200，对所述的至少一个成像镜头部件和所述场曲镜头部件进行主动校准，所述主动校准是基于所述光学系统的实际成像结果来对所述的至少一个成像镜头部件和所述场曲镜头部件的相对位置进行调整，其中通过调整成像镜头部件和所述场曲镜头部件之间的第一间隙来补偿所述光学系统的场曲。
步骤S300，粘合所述的至少一个成像镜头部件和所述场曲镜头部件，使所述的至少一个成像镜头部件和所述场曲镜头部件的相对位置保持在主动校准所确定的相对位置。
进一步地，所述至少一个成像镜头部件包括第一镜头部件和第二镜头部件，其中所述第一镜头部件包括第一镜片群，所述第一镜片群包括至少一个透镜；所述第二镜头部件包括第二镜片群，所述第二镜片群包括至少一个透镜。所述预定位步骤(即步骤S100)中，对所述第一镜头部件、所述第二镜头部件和所述场曲镜头部件进行预定位，使得所述第一镜片群、所述第二镜片群和所述场曲镜片群共同构成可成像的光学系统。所述主动校准步骤(即步骤S200)中，所述主动校准是基于所述光学系统的实际成像结果来对所述第一镜头部件、所述第二镜头部件和所述场曲镜头部件的相对位置进行调整。所述粘合步骤(即步骤S300)中，将所述第一镜头部件与所述第二镜头部件粘合， 使得所述第一镜头部件与所述第二镜头部件的相对位置保持在主动校准所确定的相对位置，以及将所述第二镜头部件与所述场曲镜头部件粘合，使得所述第二镜头部件与所述场曲镜头部件的相对位置保持在主动校准所确定的相对位置。
进一步地，在一个实施例中，所述第一镜片群对成像清晰度的敏感度高于所述场曲镜片群。所述主动校准步骤(即步骤S200)中，先通过调整所述第一镜头部件的位置使得所述光学系统的成像清晰度达标，然后调整所述场曲镜头部件的位置使得所述光学系统的场曲达标。进一步地，在一个实施例中，所述主动校准步骤中，可以通过调节所述场曲镜头部件与所述第二镜头部件在所述光学镜头的光轴方向的距离，来补偿所述光学系统的场曲，以使得所述光学系统的场曲达标。
进一步地，在一个实施例中，所述第二镜头部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接，所述第二镜片群安装于所述马达载体，并且所述第一镜片群包括至少一个可变焦的液体镜片。所述粘合步骤(即步骤S300)中，通过将所述马达壳体与所述场曲镜头部件的粘合来实现所述第二镜头部件与所述场曲镜头部件的粘合。
进一步地，参考图5，在一个实施例中，所述场曲镜头部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接。此情形下，第二镜头部件可以不包括马达。所述粘合步骤(即步骤S300)中，通过将所述第二镜头部件与所述马达载体粘合来实现所述第二镜头部件与所述场曲镜头部件的粘合。进一步地，将所述场曲镜头部件与感光组件粘合(或以其它方式安装于所述感光组件)，可以得到摄像模组。
需注意，上述实施例中，粘合步骤可以被激光焊接等其它类型的连接步骤代替。换句话说，本申请中，可以用任何使用任何连接工艺来代替粘合工艺，只要该连接工艺可以使所述的至少一个成像镜头部件和所述场曲镜头部件(或场曲部件)的相对位置保持在主动校准所确定的相对位置即可。
以下将进一步地介绍光学镜头或摄像模组组装方法中所使用的主动校准工艺。当准备步骤所准备的部件为三个或三个以上时，需要在多个部件之间的多个间隙进行主动校准，这多个间隙处的主动校准可以是同步进行的。例如在一个实施例中，第一镜头部件和第二镜头部件之间的主动校准，以及第二镜头部件与场曲镜头部件(或场曲部件)之间的主动校准可以是同步进行的。为使描述简要，下面以第一镜头部件和第二镜头部件之间的主动校准为例进行说明。
本申请中所述的主动校准可以在多个自由度上对第一镜头部件和第二镜头部件的相对位置进行调整。图10A示出了本申请一个实施例中的主动校准中相对位置调节方式。在该调节方式中，所述第一镜头部件(也可以是第一镜片)可以相对于所述第二镜头部件沿着x、y、z方向移动(即该实施例中的相对位置调整具有三个自由度)。其中z方向为沿着光轴的方向，x，y方向为垂直于光轴的方向。x、y方向均处于一个调整平面P内，在该调整平面P内平移均可分解为x、y方向的两个分量。
图10B示出了本申请另一个实施例的主动校准中的旋转调节。在该实施例中，相对位置调整除了具有图10A的三个自由度外，还增加了旋转自由度，即r方向的调节。本实施例中，r方向的调节是在所述调整平面P内的旋转，即围绕垂直于所述调整平面P的轴线的旋转。
进一步地，图10C示出了本申请又一个实施例的主动校准中的增加了v、w方向调节的相对位置调节方式。其中，v方向代表xoz平面的旋转角，w方向代表yoz平面的旋转角，v方向和w方向的旋转角可合成一个矢量角，这个矢量角代表总的倾斜状态。也就是说，通过v方向和w方向调节，可以调节第一镜头部件相对于第二镜头部件的倾斜姿态(也就是所述第一镜头部件的光轴相对于所述第二镜头部件的光轴的倾斜)。
上述x、y、z、r、v、w六个自由度的调节均可能影响到所述光学系的成像品质(例如影响到解像力的大小)。在本申请的其它实施例中，相对位置调节方式可以是仅调节上述六个自由度中的任一项，也可以其中任两项或者更多项的组合。
进一步地，在一个实施例中，主动校准步骤中，第一镜头部件和第二镜头部件相对位置的调整包括在所述调整平面上的平移，即x、y方向上的运动。
进一步地，在一个实施例中，主动校准步骤中，第一镜头部件和第二镜头部件相对位置的调整还包括：根据所述光学系统的实测解像力，调节并确定所述第一镜头部件的轴线相对于所述第二镜头部件的轴线的夹角，即w、v方向上的调节。所组装的光学镜头或摄像模组中，所述第一镜头部件的轴线与所述第二镜头部件的轴线之间可以具有不为零的夹角。
进一步地，在一个实施例中，主动校准步骤中，第一镜头部件和第二镜头部件相对位置的调整还包括：沿着垂直于所述调整平面的方向移动所述第一镜头部件(即z方向上的调节)，根据所述光学系统的实测解像力，确定所述第一镜头部件与所述第二镜头部件之间的在垂直于所述调整平面的方向上的相对位置。
进一步地，在一个实施例中，所述第一镜头部件可以不具有第一镜筒。例如第一镜头部件可以由单个第一镜片构成。在主动校准前，先对应预定位，使所述第一镜片的底面和所述第二镜头部件的顶面之间具有间隙；然后进行主动校准，再将所述胶材布置于所述间隙并使胶材固化。本实施例中，第一镜片可以由互相嵌合或粘合而形成一体的多个子镜片形成。本实施例中，第一镜片的不用于成像的非光学面的侧面和顶面可以形成遮光层。该遮光层可以通过在第一镜片的侧面和顶面丝网印刷遮光材料而形成。
在一个实施例中，主动校准步骤中，可以固定第二镜头部件，通过夹具夹持第一镜头部件，在与夹具连接的六轴运动机构的带动下，移动第一镜头部件，从而实现第一镜头部件和第二镜头部件之间的上述六个自由度下的相对移动。其中，夹具可以承靠于或部分承靠于第一镜头部件的侧面，从而将第一镜头部件夹起并进行多自由度的位置调整。
上述实施例中，由多个镜片群构成的所述光学系统的实际成像结果可根据感光芯片输出的图像数据得出。在主动校准技术中，可以在 物方布置标板，给所述感光组件通电，由感光组件直接输出对标板进行成像的图像数据，基于该图像数据即可获得被校准光学系统的解像力数据，进而判断成像质量是否达标。
以上描述仅为本申请的较佳实施方式以及对所运用技术原理的说明。本领域技术人员应当理解，本申请中所涉及的发明范围，并不限于上述技术特征的特定组合而成的技术方案，同时也应涵盖在不脱离所述发明构思的情况下，由上述技术特征或其等同特征进行任意组合而形成的其它技术方案。例如上述特征与本申请中公开的(但不限于)具有类似功能的技术特征进行互相替换而形成的技术方案。

Claims (29)

  1. 光学镜头，其特征在于，包括：
    场曲镜头部件，其包括场曲镜片群，所述场曲镜片群包括至少一个透镜；
    第一镜头部件，其包括第一镜片群，所述第一镜片群包括至少一个透镜；以及
    第二镜头部件，其包括第二镜片群，所述第二镜片群包括至少一个透镜，所述第一镜片群、所述第二镜片群和所述场曲镜片群共同构成可成像的光学系统，所述第一镜片群对成像清晰度的敏感度高于所述场曲镜片群；
    其中，所述第一镜片群位于所述第二镜片群前端，并且所述第二镜片群位于所述场曲镜片群的前端；以及
    所述场曲镜头部件和所述第二镜头部件之间具有第一间隙，并且通过调整所述第一间隙来补偿所述光学系统的场曲。
  2. 根据权利要求1所述的光学镜头，其特征在于，所述第一镜头部件和所述第二镜头部件通过第二胶材粘合在一起，所述场曲镜头部件和所述第二镜头部件通过第一胶材粘合在一起，所述第二胶材在固化后支撑和固定所述第一镜头部件和所述第二镜头部件，使得所述第一镜头部件和所述第二镜头部件之间的相对位置保持在主动校准所确定的相对位置；并且，所述第一胶材在固化后支撑和固定所述场曲镜头部件和所述第二镜头部件，使得所述场曲镜头部件和所述第二镜头部件之间的相对位置保持在主动校准所确定的相对位置，其中所述主动校准是基于所述光学系统的实际成像结果来对所述第一镜头部件和所述第二镜头部件的相对位置、以及所述第二镜头部件与所述场曲镜头部件的相对位置进行调整。
  3. 根据权利要求1所述的光学镜头，其特征在于，在同一光学设计下的多个所述光学镜头中至少存在第一光学镜头和第二光学镜 头，所述第一光学镜头的所述第一间隙在所述光学镜头的光轴方向上的尺寸不同于所述第二光学镜头的所述第一间隙在所述光学镜头的光轴方向上的尺寸。
  4. 根据权利要求2所述的光学镜头，其特征在于，所述第二镜头部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接，所述第二镜片群安装于所述马达载体；所述第一胶材位于所述马达壳体与所述场曲镜头部件之间。
  5. 根据权利要求4所述的光学镜头，其特征在于，所述场曲镜片群仅具有一个透镜。
  6. 摄像模组，其特征在于，包括：
    至少一个成像镜头部件，其中每个所述成像镜头部件包括成像镜片群，所述成像镜片群包括至少一个透镜；以及
    一个场曲部件，其包括感光组件和固定于所述感光组件的场曲镜片群，所述场曲镜片群包括至少一个透镜，所有所述成像镜片群与所述场曲镜片群共同构成可成像的光学系统；
    其中，所述场曲部件和所述成像镜头部件之间具有第一间隙，并且通过调整所述第一间隙来补偿所述光学系统的场曲。
  7. 根据权利要求6所述的摄像模组，其特征在于，所述至少一个成像镜头部件包括：
    第一镜头部件，其包括第一镜片群，所述第一镜片群包括至少一个透镜；以及
    第二镜头部件，其包括第二镜片群，所述第二镜片群包括至少一个透镜，所述第一镜片群、所述第二镜片群和所述场曲镜片群共同构成可成像的光学系统，并且所述第一镜片群对成像清晰度的敏感度高于所述场曲镜片群；
    其中，所述场曲部件与所述成像镜头部件通过布置于所述第一间 隙的第一胶材粘合，并且所述第一胶材在固化后支撑和固定所述场曲部件与所述成像镜头部件，使得所述场曲部件与所述成像镜头部件之间的相对位置保持在主动校准所确定的相对位置；所述第一镜头部件和所述第二镜头部件通过第二胶材粘合在一起，所述第二胶材在固化后支撑和固定所述第一镜头部件和所述第二镜头部件，使得所述第一镜头部件和所述第二镜头部件之间的相对位置保持在主动校准所确定的相对位置。
  8. 根据权利要求6或7所述的摄像模组，其特征在于，在同一光学设计下的多个所述摄像模组中至少存在第一摄像模组和第二摄像模组，所述第一摄像模组的所述第一间隙在所述摄像模组的光轴方向上的尺寸不同于所述第二摄像模组的所述第一间隙在所述摄像模组的光轴方向上的尺寸。
  9. 根据权利要求7所述的摄像模组，其特征在于，所述场曲镜片群仅具有一个透镜，所述第一镜片群位于所述第二镜片群的前端，所述第二镜片群位于所述第一镜片群和所述场曲镜片群之间。
  10. 根据权利要求7所述的摄像模组，其特征在于，所述第二镜头部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接，所述第二镜片群安装于所述马达载体；所述第一胶材位于所述马达壳体与所述场曲部件之间；以及所述第一镜片群包括至少一个可变焦的液体镜片。
  11. 根据权利要求6所述的摄像模组，其特征在于，所述成像镜头部件的数目为一个，所述成像镜头部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接，所述成像镜头部件安装于所述马达载体。
  12. 根据权利要求6所述的摄像模组，其特征在于，所述感光组 件包括感光芯片，所述光学系统的实际成像结果根据所述感光芯片输出的图像数据得出。
  13. 根据权利要求12所述的摄像模组，其特征在于，所述感光组件还包括：
    线路板，所述感光芯片安装于所述线路板的表面；
    镜座，其安装或形成于所述线路板的表面并围绕在所述感光芯片周围；以及
    滤色片，其安装于所述镜座；
    其中所述场曲镜片群承靠于所述镜座的顶面和/或所述滤色片的顶面。
  14. 根据权利要求13所述的摄像模组，其特征在于，所述第一胶材位于所述镜座与所述马达壳体之间，所述场曲镜片群与所述马达载体彼此分离。
  15. 根据权利要求9所述的摄像模组，其特征在于，所述场曲镜片群包括微透镜阵列。
  16. 光学镜头组装方法，其特征在于，包括：
    对至少一个成像镜头部件和场曲镜头部件进行预定位，其中所述场曲镜头部件和所述成像镜头部件彼此分离，每个所述成像镜头部件包括一个成像镜片群，每个所述成像镜片群包括至少一个透镜，所述场曲镜头部件包括场曲镜片群，所述场曲镜片群包括至少一个透镜，所述预定位使所述至少一个成像镜片群与所述场曲镜片群共同构成可成像的光学系统；
    对所述至少一个成像镜头部件和所述场曲镜头部件进行主动校准，所述主动校准是基于所述光学系统的实际成像结果来对所述至少一个成像镜头部件和所述场曲镜头部件的相对位置进行调整；其中通过调整成像镜头部件和所述场曲镜头部件之间的第一间隙来补偿所述 光学系统的场曲；以及
    连接所述至少一个成像镜头部件和所述场曲镜头部件，使所述至少一个成像镜头部件和所述场曲镜头部件的相对位置保持在主动校准所确定的相对位置。
  17. 根据权利要求16所述的光学镜头组装方法，其特征在于，所述准备中，所述至少一个成像镜头部件包括第一镜头部件和第二镜头部件，其中所述第一镜头部件包括第一镜片群，所述第一镜片群包括至少一个透镜；所述第二镜头部件包括第二镜片群，所述第二镜片群包括至少一个透镜；
    所述预定位中，对所述第一镜头部件、所述第二镜头部件和所述场曲镜头部件进行预定位，使得所述第一镜片群、所述第二镜片群和所述场曲镜片群共同构成可成像的光学系统；
    所述主动校准中，所述主动校准是基于所述光学系统的实际成像结果来对所述第一镜头部件、所述第二镜头部件和所述场曲镜头部件的相对位置进行调整；以及
    所述连接中，将所述第一镜头部件与所述第二镜头部件粘合，使得所述第一镜头部件与所述第二镜头部件的相对位置保持在主动校准所确定的相对位置，以及将所述第二镜头部件与所述场曲镜头部件粘合，使得所述第二镜头部件与所述场曲镜头部件的相对位置保持在主动校准所确定的相对位置。
  18. 根据权利要求17所述的光学镜头组装方法，其特征在于，所述准备中，所述第一镜片群对成像清晰度的敏感度高于所述场曲镜片群；以及
    所述主动校准中，通过调整所述第一镜头部件的位置使得所述光学系统的成像清晰度达标，通过调整所述场曲镜头部件的位置使得所述光学系统的场曲达标。
  19. 根据权利要求18所述的光学镜头组装方法，其特征在于， 所述主动校准中，通过调节所述场曲镜头部件与所述第二镜头部件在所述光学镜头的光轴方向的距离，来补偿所述光学系统的场曲，以使得所述光学系统的场曲达标。
  20. 根据权利要求17所述的光学镜头组装方法，其特征在于，所述准备中，所述第二镜头部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接，所述第二镜片群安装于所述马达载体，并且所述第一镜片群包括至少一个可变焦的液体镜片；以及
    所述连接中，通过将所述马达壳体与所述场曲镜头部件的粘合来实现所述第二镜头部件与所述场曲镜头部件的粘合。
  21. 摄像模组组装方法，其特征在于，包括：
    对至少一个成像镜头部件和场曲部件进行预定位，其中所述场曲部件和所述成像镜头部件彼此分离，每个所述成像镜头部件包括一个成像镜片群，每个所述成像镜片群包括至少一个透镜，所述场曲部件包括感光组件和固定于所述感光组件的场曲镜片群，所述场曲镜片群包括至少一个透镜，所述预定位使所述成像镜片群与所述场曲镜片群共同构成可成像的光学系统；
    对所述至少一个成像镜头部件和所述场曲部件进行主动校准，所述主动校准是基于所述光学系统的实际成像结果来对所述至少一个成像镜头部件和所述场曲部件的相对位置进行调整；其中通过调整成像镜头部件和所述场曲部件之间的第一间隙来补偿所述光学系统的场曲；以及
    连接所述至少一个成像镜头部件和所述场曲部件，使所述至少一个成像镜头部件和所述场曲部件的相对位置保持在主动校准所确定的相对位置。
  22. 根据权利要求21所述的摄像模组组装方法，其特征在于，所述准备中，所述至少一个成像镜头部件包括第一镜头部件和第二镜 头部件，其中所述第一镜头部件包括第一镜片群，所述第一镜片群包括至少一个透镜；所述第二镜头部件包括第二镜片群，所述第二镜片群包括至少一个透镜；
    所述预定位中，对所述第一镜头部件、所述第二镜头部件和所述场曲部件进行预定位，使得所述第一镜片群、所述第二镜片群和所述场曲镜片群共同构成可成像的光学系统；
    所述主动校准中，所述主动校准是基于所述光学系统的实际成像结果来对所述第一镜头部件、所述第二镜头部件和所述场曲部件的相对位置进行调整；以及
    所述连接中，将所述第一镜头部件与所述第二镜头部件粘合，使得所述第一镜头部件与所述第二镜头部件的相对位置保持在主动校准所确定的相对位置，以及将所述第二镜头部件与所述场曲部件粘合，使得所述第二镜头部件与所述场曲部件的相对位置保持在主动校准所确定的相对位置。
  23. 根据权利要求22所述的摄像模组组装方法，其特征在于，所述准备中，所述第一镜片群对成像清晰度的敏感度高于所述场曲镜片群；以及
    所述主动校准中，通过调整所述第一镜头部件的位置使得所述光学系统的成像清晰度达标，通过调整所述场曲部件的位置使得所述光学系统的场曲达标。
  24. 根据权利要求23所述的摄像模组组装方法，其特征在于，所述主动校准中，通过调节所述场曲部件与所述第二镜头部件在所述摄像模组的光轴方向的距离，来补偿所述光学系统的场曲，以使得所述光学系统的场曲达标。
  25. 根据权利要求23所述的摄像模组组装方法，其特征在于，所述准备中，所述第二镜头部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接，所述第二 镜片群安装于所述马达载体，并且所述第一镜片群包括至少一个可变焦的液体镜片；以及
    所述连接中，通过将所述马达壳体与所述场曲部件的粘合来实现所述第二镜头部件与所述场曲部件的粘合。
  26. 根据权利要求23所述的摄像模组组装方法，其特征在于，所述准备中，所述场曲部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接；
    所述准备还包括：将所述马达壳体固定于所述感光组件和/或所述场曲镜片群，并使所述场曲镜片群与所述马达载体保持彼此分离的状态；以及
    所述连接中，通过将所述第二镜头部件与所述马达载体粘合来实现所述第二镜头部件与所述场曲部件的粘合。
  27. 根据权利要求21所述的摄像模组组装方法，其特征在于，所述准备中，所述场曲部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接；
    所述准备还包括：将所述马达壳体固定于所述感光组件和/或所述场曲镜片群，并使所述场曲镜片群与所述马达载体保持彼此分离的状态；以及
    所述连接中，通过将所述成像镜头部件与所述马达载体粘合来实现所述成像镜头部件与所述场曲部件的粘合。
  28. 根据权利要求23所述的摄像模组组装方法，其特征在于，所述准备中，所述场曲镜头部件还包括马达，所述马达包括马达壳体和马达载体，所述马达载体与所述马达壳体可活动地连接；以及
    所述连接中，通过将所述第二镜头部件与所述马达载体粘合来实现所述第二镜头部件与所述场曲镜头部件的粘合。
  29. 摄像模组组装方法，其特征在于，包括：
    按权利要求16-19中任一项所述的光学镜头组装方法组装光学镜头；以及
    将所述光学镜头安装于感光组件得到摄像模组。
PCT/CN2019/101275 2018-10-31 2019-08-19 光学镜头、摄像模组及其组装方法 Ceased WO2020088039A1 (zh)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006308987A (ja) * 2005-04-28 2006-11-09 Nidec Copal Corp カメラモジュールの調整装置及び調整方法
CN103201665A (zh) * 2010-03-29 2013-07-10 柯尼卡美能达先进多层薄膜株式会社 摄像光学系统和光学调整方法
CN105445889A (zh) * 2015-12-02 2016-03-30 宁波舜宇光电信息有限公司 采用分体式镜头的摄像模组及其组装方法
CN207336902U (zh) * 2017-08-11 2018-05-08 宁波舜宇光电信息有限公司 光学镜头及摄像模组
CN207340018U (zh) * 2016-11-28 2018-05-08 宁波舜宇光电信息有限公司 摄像模组
CN209148947U (zh) * 2018-10-31 2019-07-23 宁波舜宇光电信息有限公司 光学镜头和摄像模组

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006308987A (ja) * 2005-04-28 2006-11-09 Nidec Copal Corp カメラモジュールの調整装置及び調整方法
CN103201665A (zh) * 2010-03-29 2013-07-10 柯尼卡美能达先进多层薄膜株式会社 摄像光学系统和光学调整方法
CN105445889A (zh) * 2015-12-02 2016-03-30 宁波舜宇光电信息有限公司 采用分体式镜头的摄像模组及其组装方法
CN207340018U (zh) * 2016-11-28 2018-05-08 宁波舜宇光电信息有限公司 摄像模组
CN207336902U (zh) * 2017-08-11 2018-05-08 宁波舜宇光电信息有限公司 光学镜头及摄像模组
CN209148947U (zh) * 2018-10-31 2019-07-23 宁波舜宇光电信息有限公司 光学镜头和摄像模组

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