WO2019174644A1 - 可成像光学器件及其制造方法 - Google Patents

可成像光学器件及其制造方法 Download PDF

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Publication number
WO2019174644A1
WO2019174644A1 PCT/CN2019/078477 CN2019078477W WO2019174644A1 WO 2019174644 A1 WO2019174644 A1 WO 2019174644A1 CN 2019078477 W CN2019078477 W CN 2019078477W WO 2019174644 A1 WO2019174644 A1 WO 2019174644A1
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WO
WIPO (PCT)
Prior art keywords
lens
adhesive
optical
barrel
imageable
Prior art date
Application number
PCT/CN2019/078477
Other languages
English (en)
French (fr)
Inventor
蒋恒
褚水佳
刘林
郑程倡
Original Assignee
宁波舜宇光电信息有限公司
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.)
Filing date
Publication date
Priority claimed from CN201820366562.1U external-priority patent/CN208239703U/zh
Priority claimed from CN201820362456.6U external-priority patent/CN208141014U/zh
Priority claimed from CN201810220345.6A external-priority patent/CN110275262A/zh
Priority claimed from CN201810219941.2A external-priority patent/CN110275260B/zh
Application filed by 宁波舜宇光电信息有限公司 filed Critical 宁波舜宇光电信息有限公司
Priority to EP19766981.5A priority Critical patent/EP3757645B1/en
Priority to US16/980,915 priority patent/US20200409016A1/en
Publication of WO2019174644A1 publication Critical patent/WO2019174644A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/003—Alignment of optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue

Definitions

  • the present application relates to the field of optical lenses.
  • the present application relates to an imageable optical device and a method of fabricating the same, an optical lens and a camera module, and more particularly to an optical lens having an escape channel.
  • Imaging optics are widely used in many fields such as medical, security, industrial production and so on.
  • the factors affecting the lens resolution force are derived from errors in components and their assembly, errors in the thickness of the lens spacer elements, errors in the assembly fit of the lenses, and changes in the refractive index of the lens material.
  • the error of each component and its assembly includes the optical surface thickness of each lens unit, the optical height of the lens, the optical surface type, the radius of curvature, the eccentricity of the lens and the surface, the tilt of the optical surface of the lens, etc.
  • the size depends on the accuracy of the mold and the ability to control the forming accuracy.
  • the error in the thickness of the lens spacer depends on the processing accuracy of the component.
  • the tolerance of the assembly fit of each lens depends on the dimensional tolerances of the components being assembled and the assembly accuracy of the lens.
  • the error introduced by the change in the refractive index of the lens material depends on the stability of the material and the batch consistency.
  • the existing resolution solution is to compensate for the tolerance of the components with high relative sensitivity and the lens rotation to improve the resolution.
  • the tolerance is strict, such as: 1 ⁇ m for some sensitive lenses.
  • the lens eccentricity will bring the 9' image plane tilt, which makes the lens processing and assembly more and more difficult.
  • the process assembly index (CPK) of the lens assembly is low and fluctuates, resulting in the defect rate. high.
  • each structural member such as photosensitive chip mounting, motor lens locking process, etc.
  • the assembly process of each structural member may cause the photosensitive chip to tilt, and multiple tilt stacks may cause the imaging mode.
  • the resolution of the group cannot reach the established specifications, which in turn leads to a low yield of the module factory.
  • the module factory compensated for the tilt of the sensor chip by the Active Alignment process when assembling the imaging lens and the photosensitive module.
  • this process has limited compensation capabilities. Since the aberrations affecting the resolution force are derived from the ability of the optical system itself, when the resolution of the optical imaging lens itself is insufficient, the active calibration process of the existing photosensitive module is difficult to compensate.
  • the lens is an important component of the camera module, which directly affects the imaging quality of the camera module.
  • the lens components are glued together, so it is often necessary to bake the lens module to solidify the glue for connection.
  • the process flow of the upper and lower lens components is different from that of the integrally formed lens component.
  • an open space reserved for the upper and lower lens components to be installed and adjusted is required. This open space needs to be sealed in subsequent processes.
  • the heat-cured adhesive is used for complete fixation. Since the air between the upper and lower lens components causes the gas to expand during baking, the gas expansion will impact the upper and lower lens components, thereby changing the relative optical components of the lens component. The position causes a drop in optical power.
  • the open space will also be fixed, and the structural strength of the upper and lower lens components is required to ensure that the open space after the fixing does not change.
  • the air between the upper and lower lens components expands when the lens module is baked, and contracts after the end of baking, which may have a large influence on the reliability of the lens module.
  • the present application is directed to providing a solution that overcomes at least one of the above-discussed deficiencies of the prior art.
  • An aspect of the present application provides an imageable optical device manufacturing method, wherein the method includes pre-positioning at least two lens components along an optical axis such that the at least two lens components are capable of imaging, wherein Having a first structural gap and a second structural gap at different positions between two adjacent lens components; adjusting a relative position of the at least two lens components that have been pre-positioned by active calibration; and disposing the first adhesive in the first structural gap a mixture (for example, the first adhesive may be dispensed with a first adhesive) and a second adhesive may be disposed at the second structural gap (for example, the second adhesive may be disposed with a second adhesive) The mixture is dispensed; and the first adhesive and the second adhesive are sequentially cured in sequence.
  • the first adhesive may be dispensed with a first adhesive
  • a second adhesive may be disposed at the second structural gap
  • preparing at least two lens components that are separated from each other and each include at least one lens may include: providing a lens barrel for at least one of the at least two lens components.
  • each of the lens components includes at least one lens, the method further comprising: shaping the lens barrel to wrap at least a portion of an upper surface and a lower surface of the lens.
  • the method may further include: combining the two adjacent ones of the at least two lens components with the A surface corresponding to a structural gap is shaped to extend away from the optical axis and toward the outer opening of the at least two lens components.
  • the method may further include: a surface of the adjacent two of the lens components corresponding to the gap of the first structure
  • the shaping is adapted to each other; and the surfaces of the two adjacent lens components corresponding to the second structural gap are shaped to fit each other.
  • the method may further include: separating the first two lens components from the first structure and the second structure The surfaces corresponding to the gaps are shaped to be perpendicular to the optical axis.
  • the method may further include: gaping the first structure gap with any one of the adjacent two lens components
  • the surface corresponding to the second structural gap is shaped on the same horizontal plane.
  • the method may further include: shaping a surface of the adjacent two lens components corresponding to the first structural gap to Vertical to the optical axis; and a surface of the adjacent two lens components corresponding to the second structural gap is shaped to have an inclined section that is inclined with respect to the optical axis.
  • the method may further include: forming a connection protrusion on one of the adjacent two lens components; A coupling recess that substantially conforms to and receives the connecting protrusion is formed on the other of the two adjacent lens members.
  • connection protrusion may include forming the connection protrusion to have at least one of a trapezoidal shape, a triangular shape, a rectangular shape, a semicircular shape, and a double triangular shape in a cross section parallel to the optical axis. A shape.
  • connection protrusion may include forming the connection protrusion to have a continuous shape in a cross section perpendicular to the optical axis.
  • connection protrusion may include forming the connection protrusion to have a discrete shape in a cross section perpendicular to the optical axis.
  • connection protrusions may include forming the connection protrusions at equal intervals around the optical axis.
  • pre-positioning the at least two lens components along the optical axis may include: bringing the at least two lens components closer to each other along an optical axis such that the first structural gap and the second structure The width of the gap is approximately the same.
  • pre-positioning the at least two lens components along the optical axis may include: bringing the at least two lens components closer to each other along an optical axis such that the first structural gap and the second structure
  • the width of the gap ranges from 30 to 300 microns, preferably from 30 to 100 microns.
  • the first adhesive may be a photocurable adhesive or a photothermosetting adhesive.
  • the first structural gap may have an opening capable of receiving light.
  • the second adhesive is a heat curing adhesive.
  • the second adhesive is a photothermal curing adhesive.
  • the second structural gap may have an opening that is disposed to have an oblique angle.
  • curing the first adhesive may include illuminating the first adhesive with light that is sensitive to the photocurable adhesive or the photothermosetting adhesive.
  • curing the second adhesive may include heating the second adhesive.
  • the imageable optical device comprises: at least two lens components, the at least two lens components are sequentially positioned along an optical axis direction, and adjacent to two a first structural gap and a second structural gap at different locations between the lens components; a first adhesive, the first adhesive disposed in the first structural gap; and a second adhesive, The second adhesive is disposed in the second structural gap, wherein the first adhesive and the second adhesive are disposed in a position and material suitable for the first adhesive and The second adhesive is cured sequentially at different times.
  • At least one of the at least two lens components comprises a lens barrel.
  • the lens barrel may wrap at least a portion of an upper surface and a lower surface of the lens.
  • the first structural gap or the second structural gap may have an overlapping area with at least a portion of the barrel package in the optical axis direction.
  • a surface of the adjacent two lens components corresponding to the first structure gap may extend away from the optical axis direction and open toward an outer portion of the at least two lens components.
  • surfaces of the adjacent two lens components corresponding to the gaps of the first structure may conform to each other.
  • the surfaces of the adjacent two lens components corresponding to the gaps of the second structure may coincide with each other.
  • surfaces of adjacent two lens components corresponding to the first structural gap and the second structural gap may be perpendicular to the optical axis.
  • a surface of any one of the adjacent two lens components corresponding to the first structural gap and the second structural gap may be on the same horizontal plane.
  • a surface of the adjacent two lens components corresponding to the gap of the first structure may be perpendicular to the optical axis.
  • a surface of the adjacent two lens components corresponding to the second structure gap may have an inclined section that is inclined with respect to the optical axis.
  • one of the adjacent two lens components may include a connection protrusion that protrudes toward the other lens component.
  • the other of the adjacent two lens components may include a coupling recess that engages and receives the coupling protrusion.
  • the connecting protrusion may have at least one of a trapezoidal shape, a triangular shape, a rectangular shape, a semicircular shape, and a double triangular shape in a cross section parallel to the optical axis.
  • the connecting protrusion may have a continuous shape in a section perpendicular to the optical axis.
  • the connecting protrusion may have a discrete shape in a section perpendicular to the optical axis.
  • connection protrusions may be equally spaced around the optical axis.
  • the widths of the first structural gap and the second structural gap may be substantially the same.
  • the width of the first structural gap and the second structural gap may range from 30 to 300 microns, preferably from 30 to 100 microns.
  • the first adhesive may be a photocurable adhesive or a photothermosetting adhesive.
  • the first structural gap may have an opening capable of receiving light.
  • the second adhesive may be a heat curing adhesive.
  • the second adhesive may be a photothermal curing adhesive.
  • the second structural gap has an opening that is disposed to have an oblique angle.
  • Another aspect of the present application provides an optical lens having an escape passage.
  • the optical lens includes: a first sub-lens, the first sub-lens includes at least one first lens and a first lens barrel accommodating the first lens, or the first sub-lens is composed of a single first lens a second sub-lens comprising at least one second lens and a second lens barrel accommodating the second lens; and an adhesive glue bonding the first sub-lens and the second sub-lens, wherein the adhesive, the first A sub-lens and the second sub-lens together form a cavity, wherein a portion of at least one of the first lens, the first lens barrel, the second lens, the second lens barrel and the adhesive glue forms an escape passage, and escapes One end of the passage leads to the cavity and the other end of the escape passage leads to the outside.
  • one end of the escape passage leading to the cavity has an enlarged opening relative to the escape passage.
  • one end of the escape passage leading to the outside has another opening that is increased in size relative to the escape passage.
  • the other opening has a sloped inner surface.
  • the escape passage is: an escape hole provided in at least one of the first lens, the first lens barrel, the second lens, and the second lens barrel.
  • the escape passage is: disposed in the first barrel in a direction parallel to an optical axis of the optical system composed of the first lens and the second lens or at an angle with respect to the direction Escape the hole.
  • the escape passage is: disposed at a certain angle in a direction perpendicular to an optical axis of the optical system composed of the first lens and the second lens or with respect to the direction An escape hole in a lens barrel and/or a second lens barrel.
  • the first lens includes an effective area for transmitting light and an ineffective area located at an outer circumference of the effective area, the escape passage being parallel to the optical system consisting of the first lens and the second lens An escape hole provided in the direction of the optical axis or at an angle with respect to the direction in the ineffective area of the first lens.
  • the escape passage is: disposed at a surface of the first barrel facing the second barrel and/or at a surface of the second barrel facing the surface of the first barrel .
  • the escape passage is an escape groove provided in the first barrel and/or the first lens along a contact boundary between the first barrel and the first lens.
  • the adhesive is in the form of a C-ring in plan view such that the escape passage is formed by the notch of the C-ring.
  • the adhesive is in the form of a plurality of C-rings spaced apart from each other in the radial direction in plan view.
  • the optical lens further includes a seal that seals a notch of the outermost C-ring.
  • the notches of the plurality of C-rings are spaced as far apart as possible in the circumferential direction.
  • the escape passage further includes an escape slot communicating with the notch of the C-ring, and the escape slot is disposed on the first barrel along a contact portion between the first sub-lens and the second sub-lens and / or in the second lens barrel.
  • the optical lens further includes a seal that seals an end of the escape passage to the outside.
  • the escape passage is in the form of at least one of a straight line form, a broken line form, and a curved form in plan view.
  • Another aspect of the present application provides a camera module including the optical lens according to the first aspect.
  • Another aspect of the present application provides a method of assembling an optical lens.
  • the assembling method includes: accommodating and mounting at least one first lens in the first barrel to form a first sub-lens; and housing and mounting the at least one second lens in the second barrel, Forming a second sub-lens; and bonding the first sub-lens to the second sub-lens by using an adhesive, wherein the adhesive, the first sub-lens and the second sub-lens together form a cavity, wherein
  • the assembling method further includes: utilizing at least one of the first lens, the first lens barrel, the second lens, the second lens barrel, and the adhesive in the process of bonding the first sub-lens and the second sub-lens
  • the through holes and/or the notches form an escape passage, and the air in the cavity communicates with the outside, wherein one end of the escape passage leads to the cavity and the other end of the escape passage leads to the outside.
  • the assembling method further includes: sealing an end of the escape passage to the outside after the optical lens assembly is completed.
  • bonding the first sub-lens to the second sub-lens by using the adhesive glue comprises: dispensing the adhesive glue on the first lens barrel and the second lens barrel, so that the adhesive glue is The plan view is in the form of a C-ring such that the escape passage is formed by the notch of the C-ring.
  • the dispensing adhesive comprises: dispensing the adhesive multiple times such that the adhesive is in the form of a plurality of C-rings spaced apart from one another in a radial direction in plan view.
  • the assembling method further includes: sealing the notch of the outermost C-ring after the optical lens assembly is completed.
  • a fourth aspect of the present application provides a method of assembling an optical lens.
  • the optical lens comprises a first lens and at least one second lens
  • the assembling method comprises:
  • the assembling method further comprises: in the process of bonding the first lens and the second sub-lens, utilizing the first lens, the second lens, the second lens barrel and the adhesive
  • the through holes and/or the notches in at least one of the glues form an escape passage that communicates air in the chamber with the outside, wherein one end of the escape passage leads to the chamber and the other end of the escape passage leads to the outside.
  • the imageable optical device is assembled from a plurality of lens components separated from each other and can provide an adjustment amount by using the first adhesive and the second adhesive for adjustment The relative position between two adjacent lens components. Since the first adhesive and the second adhesive can be cured in succession, in one aspect, the imageable optics can be pre-fixed by the first adhesive that is cured first to reduce the post-manufacturing process to the imageable optics. The effect; and on the other hand, the connection strength and the reliability of the imageable optics can be increased by a post-cured second adhesive.
  • the lens is reduced by adding an escape channel design (for example, an escape hole, a groove, an escape slot, etc.) to the lens module.
  • an escape channel design for example, an escape hole, a groove, an escape slot, etc.
  • FIG. 1 is a flow chart of a method of fabricating an imageable optical device in accordance with one embodiment of the present application
  • FIG. 2 is a cross-sectional view of an imageable optical device 2000 in accordance with one embodiment of the present application
  • 3A and 3B are partial enlarged cross-sectional views of adjacent two lens components according to an embodiment of the present application.
  • FIG. 4 is a partial enlarged cross-sectional view of two adjacent lens components in accordance with another embodiment of the present application.
  • Figure 5 is a partial enlarged cross-sectional view of two adjacent lens components in accordance with another embodiment of the present application.
  • Figure 6 is a partial enlarged cross-sectional view of two adjacent lens components in accordance with another embodiment of the present application.
  • Figure 7 is a partial enlarged cross-sectional view of two adjacent lens components in accordance with another embodiment of the present application.
  • 8A and 8B are schematic views showing the shape of the connecting projection in a section perpendicular to the optical axis.
  • FIG. 9 is a cross-sectional view schematically showing a camera module including an optical lens according to the present application.
  • Fig. 10 is a cross-sectional view showing a first escape passage of the optical lens according to the first embodiment of the present application.
  • FIG. 11 is a cross-sectional view showing a second escape passage of the optical lens according to the second embodiment of the present application.
  • FIG. 12 is a cross-sectional view showing a third escape passage of the optical lens according to the third embodiment of the present application.
  • FIGS. 13A and 13B are cross-sectional views showing a fourth escape passage of the optical lens according to the fourth embodiment of the present application.
  • FIG. 14 is a cross-sectional view showing a fifth escape passage of the optical lens according to the fifth embodiment of the present application.
  • 15 is a cross-sectional view showing a sixth escape passage of the optical lens according to the sixth embodiment of the present application.
  • 16 is a cross-sectional view showing a seventh escape passage of the optical lens according to the seventh embodiment of the present application.
  • 17A and 17B are cross-sectional views showing an eighth escape passage of the optical lens according to the eighth embodiment of the present application.
  • 18A to 18C are cross-sectional views showing a ninth escape passage of the optical lens according to the ninth embodiment of the present application.
  • 19A and 19B are cross-sectional views showing a tenth escape passage of the optical lens according to the tenth embodiment of the present application.
  • 20A and 20B are cross-sectional views showing an eleventh escape passage of the optical lens according to the eleventh embodiment of the present application.
  • 21A and 21B are cross-sectional views showing a twelfth escape passage of the optical lens according to the twelfth embodiment of the present application.
  • first, second, third, etc. are used to distinguish one feature from another, and do not represent any limitation of the feature.
  • first lens component discussed below may also be referred to as a second lens component without departing from the teachings of the present application.
  • the thickness, size, and shape of the various components may have been somewhat exaggerated for ease of illustration.
  • the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the spherical or aspherical shape shown in the drawings.
  • the drawings are only examples and are not to scale.
  • the terms “substantially”, “about”, and the like are used as terms for the approximation of the table, and are not intended to be used as the terms of the table, and are intended to illustrate measured values that will be recognized by those of ordinary skill in the art. Or calculate the inherent deviation in the value.
  • FIG. 1 shows a flow diagram of a camera module manufacturing method 1000 in accordance with one embodiment of the present application.
  • FIG. 2 shows a cross-sectional view of a camera module 2000 in accordance with an embodiment of the present application.
  • the embodiment shown in FIG. 1 and FIG. 2 is a manufacturing process and structure of the camera module.
  • the camera module may be optical lens or the like without loss of generality. Imageable optics replacement.
  • the manufacturing method includes the following steps S1100-S1500.
  • step S1100 at least two lens components that are separated from each other and each include at least one lens are prepared.
  • conventional imageable optics multiple lenses are assembled in the same lens barrel. In this case, the relative position between the lenses is substantially determined, and adjustment is hardly possible. This means that once the lens is assembled in the lens barrel, the quality of the lens is determined. Therefore, the conventional camera module manufacturing process requires high processing precision for the lens barrel and the lens.
  • at least two lens components that are separated from each other and each include at least one lens can be prepared.
  • "Preparation" as used herein includes the act and/or steps of manufacturing a lens component, as well as the behavior and/or steps of acquiring the lens component in other manners. The relative position between these lens components can be adjusted in the manner described below. Although only two lens components are prepared in the embodiment shown in FIG. 2, those skilled in the art can understand that the number of lens components can be determined according to actual needs without particular limitation.
  • first lens component 2100 and second lens component 2200 two lens components are prepared for camera module 2000, hereinafter referred to as first lens component 2100 and second lens component 2200, respectively.
  • at least one lens may be provided for both the first lens component 2100 and the second lens component 2200.
  • a lens 2110 is provided for the first lens component 2100 and five lenses are provided for the lens component 2200.
  • the number of lenses included in each lens component can be determined according to actual needs without particular limitation.
  • the first lens component 2100 can be equipped with two, three or four lenses
  • the second lens component 2200 can be equipped with one, two, three or four lenses.
  • a lens barrel is also provided for each lens component.
  • the first lens component 2100 is equipped with a lens barrel 2120.
  • the lens barrel may be a single lens barrel 2120 included in the first lens component 2100 in FIG. 2, or may be a double lens barrel included in the second lens part 2200 in FIG. 2, for example, an inner lens barrel nested together.
  • the outer tube The purpose of the lens barrel is to fix the respective lenses and to maintain the relative positions of the plurality of lenses in the same lens barrel. Therefore, in the case where a certain lens component is provided with only one lens barrel, the lens barrel can be omitted.
  • step S1200 the prepared at least two lens components are pre-positioned along the optical axis such that the at least two lens components are capable of imaging, wherein the first structure is at different positions between adjacent two lens components. Clearance and second structural gap.
  • Various types of ingestion mechanisms can be utilized to ingest each lens component, and various types of fixing mechanisms are used to fix the lens components to be pre-positioned.
  • the relative displacement of the ingestion mechanism relative to the fixation mechanism can be controlled to pre-position the at least two lens components.
  • the second lens component 2200 may be clamped and fixed by a fixing mechanism (not shown), and the first lens component 2100 may be held by an ingestion mechanism (not shown).
  • the ingesting mechanism is controlled to drive the first lens component 2100 closer to the second lens component 2200.
  • the first lens component 2100 and the second lens component 2200 are not in contact with each other, and have a first structural gap 2410 and a second structural gap 2420, respectively, at different positions therebetween.
  • the pre-positioned at least two lens components should have imaging capabilities to ensure a subsequent active calibration process.
  • the structural gap can be used to lay up an adhesive to join adjacent lens components, as will be described in more detail below.
  • the structural gap can be understood as a gap between the structural faces of the lens component that can accommodate glue.
  • the lens component structural surface may be the bottom surface or the top surface of the lens barrel, or may be a non-optical surface of the lens.
  • the surfaces of the adjacent two lens components corresponding to the first structural gap may be shaped to fit each other when preparing the lens component.
  • the surfaces of the adjacent two lens components corresponding to the gaps of the second structure may be shaped to fit each other.
  • the lower surface of the first lens component 2100 corresponding to the first structural gap 2410 and the upper surface of the second lens component 2200 corresponding to the first structural gap 2410 are shaped to have a shape that fits each other.
  • the lower surface of the first lens component 2100 corresponding to the second structural gap 2420 and the upper surface of the second lens component 2200 corresponding to the second structural gap 2420 are shaped to have a shape that fits each other.
  • the first structural gap 2410 is the same as the adhesive filled in the second structural gap 2420, not only the surfaces of the adjacent two lens components corresponding to the structural gap are shaped to fit each other, but also the first structural gap 2410 and the second Structural gaps 2420 are also pre-positioned to have substantially the same width.
  • the adhesive disposed in the two structural gaps can be made to have substantially the same thickness. In this case, the amount of variation produced during the curing of the adhesive is approximately the same.
  • the first lens component 2100 and the second lens component 2200 may be brought close to each other along the optical axis 2400 until the first structural gap 2410 and the
  • the width of the two structural gaps 2420 is in the range of 30-300 microns, preferably in the range of 30-100 microns. This width range ensures that adjacent lens components have sufficient room for adjustment during the active calibration process described below, while minimizing the amount of adhesive used to reduce deformation and curing of the adhesive after curing. The effect of deformation due to environmental factors on the imageable optics during long-term use.
  • step S1300 the relative positions of the at least two lens components of the pre-position are adjusted by active calibration.
  • the relative position of the other moving lens component can be adjusted relative to one fixed lens component based on the optical imaging result to satisfy a predetermined imaging quality, such as a predetermined resolution.
  • Adjustments to the relative positions of adjacent lens components during active calibration may include translation along the optical axis direction, translation perpendicular to the optical axis direction, rotation about the optical axis, and tilt adjustment.
  • the translation of the first structural gap 2410 and the second structural gap 2420 by the active calibration process can be regarded as a fine adjustment amount by translation along the optical axis direction and perpendicular to the optical axis direction.
  • the camera module 2000 may further include a photosensitive component 2300.
  • the photosensitive member 2300 may include a wiring board 2310, a photosensitive member 2320 mounted on the wiring board 2310, a cylindrical support 2340 formed on the wiring board 2310 and surrounding the photosensitive member 2320, and mounted on the support 2340. Filter element 2330.
  • the cylindrical support 2340 has an extension extending inwardly (in the direction toward the photosensitive member 2320) as an extension of the frame on which the color filter element 2330 is mounted.
  • the cylindrical support body 2340 also has an upper surface through which the photosensitive member can be coupled to other components of the camera module, such as the second lens component 2200.
  • the photosensitive member 2300 may also have other structures, for example, the wiring board of the photosensitive assembly has a through hole, and the photosensitive element is installed in the through hole of the circuit board; for example, the support Formed by molding around the photosensitive element and extending inwardly and contacting the photosensitive element (eg, the support covers at least a portion of the non-photosensitive area at the edge of the photosensitive element); for example, the photosensitive member may also omit the filter Color component.
  • the second lens component 2200 may be clamped and fixed by a fixing mechanism (not shown), and an ingestion mechanism (not shown) The first lens component 2100 is clamped. Then, the position of the first lens component 2100 relative to the second lens component 2200 is fine-tuned according to the optical imaging result acquired by the photosensitive member 2300. For example, the translational position of the first lens component 2100 relative to the second lens component 2200, such as the X shift amount, the Y shift amount, and the Z shift amount in the Cartesian coordinate system, may be adjusted. In addition, the angle of the first lens component 2100 relative to the second lens component 2200, such as the yaw angle, the pitch angle, and the roll angle, may also be adjusted.
  • step S1400 a first adhesive is disposed in the first structural gap and a second adhesive is disposed in the second structural gap.
  • the first adhesive may be a photocurable adhesive.
  • the first adhesive can be an ultraviolet (UV) curable adhesive.
  • the photoinitiator (or photosensitizer) in the UV curable adhesive absorbs UV under UV irradiation to produce active radicals or cations, which initiates polymerization of the monomer and cross-linking chemical reaction, so that the binder can be converted from liquid in a short time. It is solid.
  • the first adhesive can be a photothermosensitive adhesive.
  • the photothermosetting adhesive can be cured under conditions of light irradiation and heating of the corresponding spectrum, for example, a UV thermosetting adhesive.
  • the first structural gap 2410 should have an opening capable of receiving light to facilitate subsequent adhesive curing operations.
  • the second adhesive may be a heat curing adhesive such as an epoxy resin or the like.
  • the heat curing adhesive can be cured under heating.
  • the second adhesive may also be a photothermosetting adhesive.
  • photocuring adhesives heat curing adhesives, and photothermal curing adhesives are shown as examples of the first adhesive and the second adhesive in the present application, those skilled in the art will understand that the first adhesive
  • the type of the mixture and the second adhesive is not limited thereto. Any type of adhesive can be used according to actual needs.
  • the first adhesive and the second adhesive are disposed in a position and material adapted to cause the first adhesive and the second adhesive to be cured in sequence at different times.
  • an adhesive having a different curing temperature may be selected, or the light opening of the first structural gap may be spaced from the second structure.
  • the illumination opening settings are independent of each other in terms of achieving light reception.
  • the surfaces of the adjacent two lens components corresponding to the first structural gap may be shaped to deviate The optical axis direction extends and faces an outer opening of the at least two lens components; and a surface of the adjacent two lens components corresponding to the second structural gap is shaped to extend toward the optical axis direction An inner opening is formed toward the at least two lens components.
  • the surfaces of the first lens component 2100 and the second lens component 2200 corresponding to the first structural gap 2410 extend away from the optical axis 2400, respectively, and face the exterior of the first lens component 2100 and the second lens component 2200.
  • a first opening 2510 is formed.
  • the first opening 2510 can be used to receive light used to cure the first adhesive.
  • surfaces of the first lens component 2100 and the second lens component 2200 corresponding to the second structure gap 2420 respectively extend toward the optical axis 2400, and form a second opening toward the inside of the first lens component 2100 and the second lens component 2200, respectively. 2520.
  • the second adhesive is a photothermal curing adhesive
  • the second opening 2520 may be provided with a certain inclination angle to prevent contamination of the lens by external impurities.
  • the first adhesive and the second adhesive are sequentially and sequentially cured.
  • the first adhesive is a photocurable adhesive or a photothermosetting adhesive
  • light sensitive to the first adhesive can be used to illuminate the first adhesive.
  • UV can be used to illuminate UV curable or UV thermoset.
  • the second adhesive is a heat curing adhesive or a photothermal curing adhesive
  • a suitable curing temperature can be provided for the second adhesive depending on the composition and properties of the second adhesive.
  • the first adhesive and the second adhesive are successively cured by rationally arranging the curing conditions of the first adhesive and the second adhesive.
  • the camera module may be pre-fixed by the first adhesive first cured to reduce the influence of the post-production process on the camera module; and the connection strength and the camera module may be increased by the post-cured second adhesive. Reliability. In this case, on the one hand, the structural strength of the finally formed imageable optics can be ensured, and on the other hand the relative position of the internal structure of the imageable optics can be ensured during the flow of the process.
  • thermoset or UV thermosets require baking at elevated temperatures to achieve design strength, and this bake operation is often performed on another device that is separate from the device performing the active calibration.
  • the imageable optics in the semi-finished state will experience movement.
  • the UV curable adhesive or the UV thermosetting adhesive filled in the first structural gap can be exposed for a short time on the machine, for example, to achieve a pre-fixing effect.
  • the imageable optics can then be moved into a baking chamber for baking to fully cure the UV thermoset or thermoset filled in the second structural gap. During this process, the adhesive in the first structural gap can also be fully cured.
  • step S1300 and step S1400 in FIG. 1 have no clear sequence. That is, the method 1000 may be sequentially executed in the order of S1100 ⁇ S1200 ⁇ S1300 ⁇ S1400 ⁇ S1500, or may be sequentially performed in the order of S1100 ⁇ S1400 ⁇ S1200 ⁇ S1300 ⁇ S1500. If the active calibration (S1300) is performed first and then the adhesive is disposed (S1400), the adhesive laying process can have sufficient time. If the adhesive is first set (S1400) and then actively calibrated (S1300), it can be guaranteed that the active calibration process has taken into account some of the effects of adhesive placement, so active calibration and adhesive curing can be more Close to the In Situ process.
  • 3A and 3B are partial enlarged cross-sectional views of adjacent two lens components in accordance with one embodiment of the present application.
  • surfaces of adjacent two lens components corresponding to the first structural gap and the second structural gap are each shaped perpendicular to the optical axis.
  • the optical axis direction is a vertical direction.
  • the surface 3121 of the first lens component 3100 corresponding to the first structural gap 3410 and the surface 3122 of the second lens component 3200 corresponding to the first structural gap 3410 are parallel to each other and both extend horizontally.
  • the surface 3123 of the first lens component 3100 corresponding to the second structural gap 3420 and the surface 3124 of the second lens component 3200 corresponding to the second structural gap 3420 are parallel to each other and both extend horizontally.
  • first structural gap 3410 and the second structural gap 3420 are spaced apart from one another. For example, there is a vertical isolation segment between the first structural gap 3410 and the second structural gap 3420.
  • the lens component is prepared in the configuration as described above, and when the camera module is placed vertically to prepare for curing, the adhesive is less susceptible to gravity and diffuses or mixes in the structural gap.
  • the surfaces of any one of the adjacent two lens components corresponding to the first structural gap and the second structural gap are shaped to be on the same horizontal plane.
  • the surface 3121' of the first lens component corresponding to the first structural gap 3410' and the surface 3123' corresponding to the second structural gap 3420' are on the same level.
  • the surface 3122' of the second lens component corresponding to the first structural gap 3410' and the surface 3124' corresponding to the second structural gap 3420' are on the same level. In this case, light incident from the first structural gap 3410' can also reach the second structural gap 3420'.
  • a UV thermosetting glue can be disposed in both the first structural gap 3410' and the second structural gap 3420'.
  • a waterproof reinforcing glue may be disposed at the outer opening 3500 of the second structural gap to prevent external moisture from penetrating into the imageable optical device.
  • the waterproof reinforcing rubber also has the function of reinforcing the structure.
  • the waterproof reinforcing glue fills the entire outer opening 3500.
  • the glue is a UV glue or a UV thermosetting glue having a waterproof after curing.
  • the waterproof reinforcing adhesive has a function of preventing the first binder and the second binder from absorbing water vapor.
  • FIG. 4 is a partial enlarged cross-sectional view of two adjacent lens components in accordance with another embodiment of the present application.
  • the surfaces of adjacent two lens components corresponding to the first structural gap are shaped to be perpendicular to the optical axis.
  • a surface of the adjacent two lens components corresponding to the second structure gap is shaped to have an inclined section that is inclined with respect to the optical axis.
  • the optical axis direction is a vertical direction.
  • the surface 4121 of the first lens component 4100 corresponding to the first structural gap 4410 and the surface 4122 of the second lens component 4200 corresponding to the first structural gap 4410 are parallel to each other and both extend horizontally.
  • the surface 4123 of the first lens component 4100 corresponding to the second structural gap 4420 and the surface 4124 of the second lens component 4200 corresponding to the second structural gap 4420 have inclined sections 4125 and 4126 that are inclined with respect to the optical axis.
  • the width of the first structural gap 4410 can be substantially the same as the width of the second structural gap 4420.
  • the adhesive laying area can be increased to enhance the adhesion between adjacent lens components.
  • the adhesive layout area is increased, a smaller structural gap width can be disposed under the same adhesive strength.
  • the surface corresponding to the first structural gap may also be shaped to be inclined with respect to the optical axis, and the inclined section may also have a certain curvature.
  • Figure 5 is a partial enlarged cross-sectional view of two adjacent lens components in accordance with another embodiment of the present application.
  • the lens barrel 5120 is shaped to wrap at least a portion of the upper and lower surfaces of the lens 5110.
  • the first structural gap 5410 or the second structural gap 5420 has an overlapping area with at least a portion of the lens barrel 5120 wrapped in the optical axis direction.
  • Figure 6 is a partial enlarged cross-sectional view of two adjacent lens components in accordance with another embodiment of the present application.
  • a connecting protrusion is formed on one of the adjacent two lens members; and the other lens member is in the adjacent two lens members.
  • a connecting recess that engages and receives the connecting protrusion is formed.
  • the connection protrusion 6610 is formed on the first lens part 6100 of the adjacent first lens part 6100 and the second lens part 6200, and a connection is formed on the second lens part 6200.
  • the recess 6620 The shape of the connection recess 6620 substantially matches the shape of the connection protrusion 6610 and is capable of receiving the connection protrusion 6610.
  • connection protrusion and the connection recess is not particularly limited as long as a certain gap is reserved between the connection protrusion 6610 and the connection recess 6620 to form the first structure gap and the second structure gap when the camera module is manufactured. Additionally, the width of the first structural gap may be substantially the same as the width of the second structural gap. Since the connecting protrusion 6610 and the connecting recess 6620 are fitted to each other up and down, the structural strength of the camera module after the manufacturing is completed is increased. For example, the impact in the lateral direction perpendicular to the optical axis can be offset by the elastic force between the portions that are fitted to each other.
  • connection protrusion may be formed to have at least one of a trapezoidal shape, a triangular shape, a rectangular shape, a semicircular shape, and a double triangular shape in a cross section parallel to the optical axis.
  • a trapezoidal shape a triangular shape
  • a rectangular shape a semicircular shape
  • a double triangular shape in a cross section parallel to the optical axis.
  • the connecting recess has a shape that matches the connecting projection.
  • Figure 7 is a partially enlarged cross-sectional view of two adjacent lens components in accordance with another embodiment of the present application.
  • the embodiment shown in Fig. 7 is substantially the same as the embodiment shown in Fig. 6, except for the position where the connecting projection and the connecting recess are formed.
  • the connection protrusion 7610 is formed on the second lens part 7200 of the adjacent first lens part 7100 and the second lens part 7200, and the connection recess 7620 is formed on the first lens part 7100.
  • the shape of the connection recess 7620 matches the shape of the connection protrusion 7610 and can receive the connection protrusion 7610.
  • connection protrusion 8610 may be formed to have a continuous shape in a section perpendicular to the optical axis, such as a closed ring.
  • the adhesive surface of the adhesive is large. Since the adhesive attachment surface is increased, a smaller structural gap width can be configured under the same adhesive strength and amount of adhesive.
  • the connection protrusions 8710 may be formed to have a discrete shape in a section perpendicular to the optical axis. These discrete connecting protrusions 8710 may have unequal spacing from one another, but preferably may have equal spacing.
  • the connection protrusions 8710 may be formed on a circle at equal intervals around the optical axis.
  • the present application further provides a camera module 2000.
  • the camera module 2000 includes: at least two lens components, each of the at least two lens components includes at least one lens and is sequentially positioned along an optical axis direction, and between adjacent two lens components a first structural gap and a second structural gap at different locations; a first adhesive, the first adhesive disposed in the first structural gap; and a second adhesive, the second adhesive a mixture disposed in the second structural gap, wherein the first adhesive and the second adhesive are disposed in a position and material adapted to cause the first adhesive and the second adhesive The mixture is cured at different times.
  • the first structural gap and the second structural gap may be spaced apart from each other to prevent the first adhesive and the second adhesive from intermingling with each other.
  • At least one of the at least two lens components may further include a lens barrel.
  • the lens barrel may wrap at least a portion of an upper surface and a lower surface of the lens.
  • the first structural gap or the second structural gap may have an overlapping area with at least a portion of the barrel package in the optical axis direction.
  • a surface of the adjacent two lens components corresponding to the first structure gap may extend away from the optical axis direction and toward an outer opening of the at least two lens components.
  • a surface of the adjacent two lens components corresponding to the second structure gap may extend toward the optical axis direction and open toward an inner portion of the at least two lens components.
  • the inner opening can be provided with a certain inclination angle to prevent contamination of the lens by external impurities.
  • the internal opening also prevents lens contamination due to spillage.
  • the surfaces of the adjacent two lens components corresponding to the gaps of the first structure may coincide with each other.
  • the surfaces of the adjacent two lens components corresponding to the gaps of the second structure may coincide with each other.
  • the surfaces of the adjacent two lens components corresponding to the first structural gap and the second structural gap may be perpendicular to the optical axis.
  • the surfaces of the adjacent two lens components corresponding to the first structural gap and the second structural gap are on the same horizontal plane.
  • one of the adjacent two lens components may include a connection protrusion that protrudes toward the other lens component; and the other of the two adjacent lens components may include a fit and receive The connecting recess of the connecting protrusion.
  • the connecting protrusion may have at least one of a trapezoidal shape, a triangular shape, a rectangular shape, a semicircular shape, and a double triangular shape in a cross section parallel to the optical axis.
  • the connecting protrusion may have a continuous shape in a section perpendicular to the optical axis.
  • the connecting protrusion may have a discrete shape in a section perpendicular to the optical axis.
  • the connecting protrusions may be arranged equidistantly around the optical axis (may not be equidistant, preferably equidistant).
  • the widths of the first structural gap and the second structural gap may be the same.
  • the first adhesive may be a photocurable adhesive or a photothermosetting adhesive.
  • the first structural gap may have an opening capable of receiving light.
  • the second adhesive may be a heat curing adhesive.
  • the second adhesive may be a photothermosensitive adhesive.
  • the second structural gap has an opening capable of receiving light.
  • FIG. 9 is a cross-sectional view schematically showing a camera module 1 including an optical lens according to the present application.
  • the camera module 1 includes an optical lens and a photosensitive component.
  • the optical lens comprises: a first sub-lens 1000 comprising at least one first lens 102 and a first lens barrel 104 accommodating the first lens 102; a second sub-lens 2000 comprising at least one second lens 202 and accommodating the second lens The second lens barrel 204 of the 202; the adhesive glue 6000 (as shown in FIG. 18A to FIG.
  • the assembling method of the optical lens includes: accommodating and mounting at least one first lens in the first barrel to form a first sub-lens; and housing and mounting at least one second lens in the second barrel Forming a second sub-lens; and bonding the first sub-lens to the second sub-lens by using an adhesive, wherein the adhesive, the first sub-lens and the second sub-lens together form a cavity, wherein
  • the assembling method further includes: utilizing at least one of the first lens, the first lens barrel, the second lens, the second lens barrel, and the adhesive in the process of bonding the first sub-lens and the second sub-lens
  • the through holes and/or the notches in one form an escape passage, and the air in the cavity communicates with the outside, wherein one end of the escape passage leads to the cavity and the other end of the escape passage leads to the outside.
  • the first sub-lens 1000 can include only a single first lens 102 without including the first lens barrel 104.
  • the first lens 102 can be adhered to the second sub-lens 2000 directly using the adhesive glue 6000.
  • the remaining configuration and mounting method of this embodiment is similar to the embodiment including the first barrel 104, and therefore, only the embodiment including the first barrel 104 will be described in detail herein.
  • the first sub-lens 1000 is provided as an upper lens component and includes a first lens 102 and a first lens barrel 104.
  • the first lens 102 has a convex portion that is circular in plan view at the center for optical imaging; and has a flat outer edge portion at the outer periphery for accommodation in the first lens barrel 104.
  • the projection of the first lens 102 is an effective area for transmitting light, and the outer edge of the first lens 102 is an ineffective area.
  • the center of the first lens barrel 104 is empty to accommodate the first lens 102 and allow light to propagate through the first lens 102; the inner circumference side of the first lens barrel 104 has a concave shape Flat step section.
  • the first lens 102 and the first barrel 104 are integrally connected to form the first sub-lens 1000 by attaching and fixing the step portion of the first barrel 104 to the outer edge portion of the first lens 102.
  • the second sub-lens 2000 is provided as a lower lens component and includes a second lens 202 and a second lens barrel 204.
  • the elements and the connections between the elements of the second sub-lens 2000 may be similar to those of the first sub-lens 1000, and the description will not be repeated here but only the differences will be explained.
  • the second lens 202 comprises five lenses.
  • the number of the first lens 102 and the second lens 202 is merely an example and not a limitation.
  • the second lens 202 may be provided as one, two, three, four, or the like.
  • each lens should be broadly understood to include a lens stack that is formed by a single lens or glue, or a lens stack that is otherwise formed.
  • the first sub-lens 1000 is not limited to the upper lens component and the second sub-lens 2000 is not limited to the lower lens component, and for example, the first sub-lens 1000 may be a lower lens component.
  • the first sub-lens 1000 is bonded to the second sub-lens 2000 by the adhesive glue 6000. Specifically, the first lens barrel 104 of the first sub-lens 1000 and the second lens barrel 204 of the second sub-lens 2000 are bonded.
  • the glue 6000 (which will be described later in detail) is bonded together such that the first lens 102 and the second sub-lens 2000 are combined into an optical system that is clear in image, similar in object, and small in deformation (it is known to those skilled in the art that it is ideal)
  • the center perpendicular of the first lens 102 and all of the second lenses 202 is aligned on the optical axis 402 of the camera module to constitute the optical system), and the first sub-lens 1000 and the second sub-lens are made.
  • a cavity 1200 is formed between the lenses 2000.
  • the optical lens (specifically, the adhesive glue 6000), and therefore, in the cavity 1200
  • the air may have a thermal expansion and contraction effect due to the difference in temperature between baking and baking, which may affect the imaging accuracy of the optical lens. Therefore, the optical lens according to the present application is provided with an escape passage (not shown in Fig. 9) to communicate the chamber 1200 with the outside to discharge the air.
  • the escape passage may be disposed in at least one of the first lens 102, the first barrel 104, the second lens 202, the second barrel 204, and the adhesive 6000, and may have various forms as long as the above functions can be achieved That is, this will be described in detail later.
  • the camera module 1 further includes a photosensitive member 3000 that receives an image formed by the first lens 102 and the second lens 202.
  • the photosensitive member 3000 may include: a wiring board 302 with a RC member, a photosensitive member 304 mounted on the wiring board 302, a cylindrical support 306 formed on the wiring board 302 and surrounding the photosensitive member 304, and A filter element 308 is mounted on the support 306 above the photosensitive element 304.
  • FIGS. 10 to 21B The escape route of the optical lens according to the present application will be described in detail below with reference to FIGS. 10 to 21B.
  • FIGS. 10 to 21B For the sake of clarity of illustration, only the connection portion of the optical lens 1 of FIG. 9 showing the first sub-lens 1000 and the second sub-lens 2000 and the portion of the display cavity 1200 may be shown in FIGS. 10 to 21B, specifically, only The portion A circled in Fig. 9 is shown.
  • a multi-group lens module and at least one escape channel are provided.
  • An escape passage is added to the component of the optical lens module, so that the escape passage cooperates with the adjustment gap between the first sub-lens and the second sub-lens to provide an escape passage for the air, thereby making the first sub-lens and the second
  • the enclosed air between the sub-lenses is in communication with the outside.
  • the escape passage may be a hole, a passage, a groove, a gap, a gap, and the like for escaping, and the structure thereof is not particularly limited as long as the following requirements can be satisfied: the air can escape smoothly when the heat expands and contracts. Flow out to avoid excessive force on adjacent components, causing the relative position of the two sub-lens to shift or the optical system components to deform, thereby affecting optical performance.
  • one end of the escape passage leading to the cavity has an enlarged opening relative to the escape passage.
  • the enlarged opening has a slower flow velocity because of a larger cross-sectional area perpendicular to the gas flow direction; in contrast, when the gas flows through the escape passage, Because the smaller size of the escape passage is perpendicular to the flow direction of the gas, the cross-sectional area is small, so that the gas flow rate is increased to remove the gas more quickly, thereby preventing the gas from being applied to adjacent components because the gas is too fast to be removed.
  • a strong effect resulting in a shift in the relative position of the two sub-lenses or the occurrence of optical system components.
  • the end of the escape hole leading to the outside also has an opening, so that the glue has a larger contact area when the glue is sealed, and further, the opening of the end of the escape hole to the outside has an inclined inner surface. .
  • the glue can fill the opening along the inclined surface to facilitate the flow of the glue and even filling.
  • the inclined inner surface also functions to accommodate overflow.
  • the escape passage may be an escape hole provided in at least one of the first lens, the first lens barrel, the second lens, and the second lens barrel.
  • the end of the escape passage leading to the outside is sealed after the optical lens assembly is completed. In this way, the wall can be prevented from entering the inside of the optical lens from the escape passage by foreign matter such as dust.
  • the escape passage may be in the form of at least one of a straight line form, a broken line form, and a curved form (such as an S-shaped line) in plan view, and may even be in other regular or irregular forms.
  • the escape passage may have an irregular shape; this is because the formation of the notch depends on the avoidance design of the dispensing path (specifically, after the dispensing, the two sides of the glue are naturally surrounded The space) and the extrusion of the upper and lower groups, and the gap caused by each extrusion may be different.
  • the fold line, the curve, and the like can also achieve the effect that dust can be prevented from entering the inside of the optical lens from the escape passage even if the outlet of the escape passage is not sealed with glue.
  • the escape route is exemplified by a straight line and/or a disconnected line.
  • FIGS. 10 to 15 illustrate an escape passage provided in the first sub-lens 1000 (ie, the upper lens component), and FIGS. 16 to 17B illustrate a second sub-lens 2000 (ie, a lower lens component).
  • the escape passage in the middle, and FIGS. 18A to 21B show the escape passage provided between the first sub-lens 1000 and the second sub-lens 2000.
  • FIG. 10 is a cross-sectional view showing the first escape passage 5010 of the optical lens 10 according to the first embodiment of the present application.
  • the first escape passage 5010 may be in a direction parallel to the optical axis of the optical system composed of the first lens and the second lens (for example, shown as a vertical direction in FIG. 10) An escape hole provided in the first lens barrel 104 at an angle or with respect to the direction.
  • the first escape passage 5010 can be vertically disposed, for example, in the first barrel 104.
  • One end portion 512 (bottom) of the first escape passage 5010 leading to the cavity 1200 is provided with a relatively large opening for preventing the inner overflow from blocking the escape hole; the other end portion 514 of the first escape passage 5010 It leads to the outside, so that the internal space of the optical lens 10 communicates with the outside to ensure that the air pressure is relatively stable to prevent the rapid flow of air from exerting a force on the adjacent components.
  • FIG. 11 is a cross-sectional view showing a second escape passage 5020 of the optical lens 20 according to the second embodiment of the present application.
  • the second escape passage 5020 may be in a direction perpendicular to an optical axis of the optical system composed of the first lens and the second lens (for example, shown in FIG. 11 An escape hole provided in the first lens barrel 104 at a certain angle in the horizontal direction or with respect to the direction.
  • the second escape passage 5020 can be horizontally disposed in the first barrel 104, for example.
  • the one end portion 522 of the second escape passage 5020 leading to the cavity 1200 is provided with a relatively large opening for preventing the inner overflowing material from blocking the escape hole; the other end portion 524 of the second escape passage 5020 is open to the outside.
  • the internal space of the optical lens 20 is communicated with the outside to ensure that the air pressure is relatively stable to prevent the rapid flow of air from exerting a force on the adjacent members.
  • FIG. 12 is a cross-sectional view showing a third escape passage 5030 of the optical lens 30 according to the third embodiment of the present application.
  • the third escape passage 5030 may be disposed at a certain angle in a direction parallel to the optical axis of the optical system composed of the first lens and the second lens or with respect to the direction An escape hole in the ineffective area of the first lens 102.
  • the inactive area of the first lens 102 represents the outer edge portion of the first lens 102 that does not participate in imaging. It should be understood, however, that the ineffective regions herein are merely examples, and may not be disposed on the periphery of the lens or have other configurations as long as imaging is not affected.
  • the third escape passage 5030 can be vertically disposed, for example, in the inactive area of the first lens 102.
  • the one end portion 532 of the third escape passage 5030 leading to the cavity 1200 is provided with a relatively large opening for preventing the inner overflow glue from blocking the escape hole; the other end portion 534 of the third escape passage 5030 leads to the outside
  • the internal space of the optical lens 30 is communicated with the outside to ensure that the air pressure is relatively stable to prevent the rapid flow of air from exerting a force on the adjacent members.
  • 13A and 13B are a front cross-sectional view and a plan cross-sectional view showing a fourth escape passage 5040 of the optical lens 40 according to the fourth embodiment of the present application.
  • the fourth escape passage 5040 may be a groove provided at a surface of the first barrel 104 facing the second barrel 204.
  • the fourth escape passage 5040 can be horizontally disposed, for example, in the first barrel 104, and its surface facing the second barrel 204 is open.
  • the one end portion 542 of the fourth escape passage 5040 leading to the cavity 1200 is provided with a relatively large opening for preventing the inner overflowing material from blocking the escape hole; the other end portion 544 of the fourth escape passage 5040 is open to the outside.
  • the internal space of the optical lens 40 is communicated with the outside to ensure that the air pressure is relatively stable to prevent the rapid flow of air from exerting a force on the adjacent members.
  • a larger groove can be provided as an escape passage by removing the portion of the first barrel 104 facing the joint surface, which not only increases the size of the ventilation passage, but also reduces the difficulty in making the escape hole.
  • FIG. 14 is a cross-sectional view showing a fifth escape passage 5050 of the optical lens 50 according to the fifth embodiment of the present application.
  • the fifth escape passage 5050 may be an escape groove provided in the first barrel 104 along a contact boundary between the first barrel 104 and the first lens 102.
  • the fifth escape passage 5050 may be provided in the first lens barrel 104 along the first lens 102, for example, in an L-shape.
  • the one end portion 552 of the fifth escape passage 5050 leading to the cavity 1200 is provided with a relatively large opening for preventing the inner overflow glue from blocking the escape hole; the other end portion 554 of the fifth escape passage 5050 leads to the outside.
  • the internal space of the optical lens 50 is communicated with the outside to ensure that the air pressure is relatively stable to prevent the rapid flow of air from exerting a force on the adjacent members.
  • Fig. 15 is a cross-sectional view showing a sixth escape passage 5060 of the optical lens 60 according to the sixth embodiment of the present application.
  • the sixth escape passage 5060 may be an escape groove provided in the first lens 102 along a contact boundary between the first barrel 104 and the first lens 102.
  • the sixth escape passage 5060 can be disposed in the first lens 102 along the first barrel 104, for example, in an L-shape.
  • the one end portion 562 of the sixth escape passage 5060 leading to the cavity 1200 is provided with a relatively large opening for preventing the inner overflow glue from blocking the escape hole; the other end portion 564 of the sixth escape passage 5060 leads to the outside
  • the internal space of the optical lens 60 is communicated with the outside to ensure that the air pressure is relatively stable to prevent the rapid flow of air from exerting a force on the adjacent members.
  • FIG. 16 is a cross-sectional view showing a seventh escape passage 5070 of the optical lens 70 according to the seventh embodiment of the present application.
  • the seventh escape passage 5070 may be: in a direction perpendicular to an optical axis of the optical system composed of the first lens and the second lens or with respect to the direction An escape hole provided in the second barrel 204 at an angle. It is worth mentioning that the seventh embodiment can be used in combination with the foregoing second embodiment, that is, the escape channel can be perpendicular to the optical axis of the optical system composed of the first lens and the second lens. Provided in the first lens barrel 104 and the second lens barrel 204 in a direction or at an angle with respect to the direction
  • the seventh escape passage 5070 can be horizontally disposed, for example, in the second barrel 204.
  • the one end portion 572 of the seventh escape passage 5070 leading to the cavity 1200 is provided with a relatively large opening for preventing the inner overflowing material from blocking the escape hole; the other end portion 574 of the seventh escape passage 5070 leads to the outside
  • the internal space of the optical lens 70 is communicated with the outside to ensure that the air pressure is relatively stable to prevent the rapid flow of air from exerting a force on the adjacent components.
  • 17A and 17B are cross-sectional views showing an eighth escape passage 5080 of the optical lens 80 according to the eighth embodiment of the present application.
  • the eighth escape passage 5080 may be a groove provided at a surface of the second barrel 204 facing the first barrel 104. It is worth mentioning that the eighth embodiment can be used in combination with the foregoing fourth embodiment, that is, the escape passage can be a groove provided at a surface of the first barrel 104 facing the second barrel 204 and Both of the grooves at the surface of the second barrel 204 facing the first barrel 104 are disposed.
  • the eighth escape passage 5080 can be horizontally disposed, for example, in the second barrel 204, and is open to the surface of the first barrel 104.
  • the one end portion 582 of the eighth escape passage 5080 leading to the cavity 1200 is provided with a relatively large opening for preventing the inner overflow glue from blocking the escape hole; the other end portion 584 of the eighth escape passage 5080 leads to the outside
  • the internal space of the optical lens 80 is communicated with the outside to ensure that the air pressure is relatively stable to prevent the rapid flow of air from exerting a force on the adjacent members.
  • FIGS. 18A to 18C are cross-sectional views showing a ninth escape passage of the optical lens 90 according to the ninth embodiment of the present application. Further, FIGS. 18A to 18C also show the aforementioned adhesive glue 6000.
  • the adhesive glue 6000 (including 610 and 620) is in the form of a C-ring in plan view, so that the ninth escape passage is formed by the notches G1 and G2 of the C-ring.
  • the adhesive glue 6000 may be in the form of a plurality of C-rings spaced apart from one another in a radial direction in plan view.
  • the first sub-lens 1000 and the second sub-lens 2000 are connected using an adhesive glue 6000 (for example, glue).
  • the adhesive glue 6000 can be, for example, distributed in a ring shape as viewed in a plan view, and the annular glue tape is provided with notches (for example, G1 and G2) to serve as an escape passage by the notch, that is, sticky.
  • the rubber 6000 is distributed in a C shape. If there are two or more dispenses, a gap is required for each dispense as a vent, as shown in Figure 18B.
  • the outer layer glue and the inner layer glue are cured in portions, and for example, the outer layer dewatering may be photocured to thermally cure the inner layer glue.
  • the notch of the outermost C-ring can be sealed after the optical lens assembly is completed, that is, the optical lens further includes a seal that seals the end of the escape passage to the outside.
  • the optical lens further includes a seal that seals the end of the escape passage to the outside.
  • the notches of the plurality of C-rings may be spaced as far apart as possible in the circumferential direction.
  • This embodiment is mainly applicable to the case where the number of dispensings is two or more.
  • an escape groove may be disposed along a surface of the first sub-lens and the second sub-lens at the joint thereof, and each of the adjacent sides of each escape slot is disposed at least A recess for storing excess glue spilling from the side to prevent the glue from overflowing and blocking the escape trough. This will be described below with reference to Figs. 19A to 21B.
  • 19A and 19B are cross-sectional views showing a tenth escape passage of the optical lens 100 according to the tenth embodiment of the present application.
  • the tenth escape passage may further include an escape slot 5100 communicating with the notches G1 and G2 of the C-ring, the escape slot 5100 along the first sub-lens 1000 and the second sub-lens 2000 The contact portion between them is provided in the first barrel 104. That is, the escape groove 5100 communicates with the notches G1 and G2 of the adhesive glue 6000 to collectively serve as the tenth escape passage.
  • the escape groove 5100 may be provided in the first barrel 104, for example, in the shape of a bent line.
  • the one end portion 5102 of the escape groove 5100 leading to the cavity 1200 is provided with a relatively large opening for preventing the inner overflow glue from blocking the escape hole; the other end portion 5104 of the escape groove 5100 leads to the outside, so that the optical lens
  • the internal space of 100 is in communication with the outside to ensure that the air pressure is relatively stable to prevent the rapid flow of air from exerting a force on the adjacent components.
  • 20A and 20B are cross-sectional views showing an eleventh escape passage of the optical lens 110 according to the eleventh embodiment of the present application.
  • the eleventh escape passage may further include an escape slot 5110 communicating with the notches G1 and G2 of the C-ring, the escape slot 5110 along the first sub-lens 1000 and the second sub-lens
  • the contact portion between the lenses 2000 is disposed in the second barrel 204. That is, the escape groove 5110 communicates with the notches G1 and G2 of the adhesive glue 6000 to collectively serve as the eleventh escape passage.
  • the escape groove 5110 may be provided in the second barrel 204, for example, in the shape of a bent line.
  • One end portion 5112 of the escape groove 5110 leading to the cavity 1200 is provided with a relatively large opening for preventing the inner overflow glue from blocking the escape hole; the other end portion 5114 of the escape groove 5110 is open to the outside, so that the optical lens
  • the internal space of the 110 is in communication with the outside to ensure that the air pressure is relatively stable to prevent the rapid flow of air from exerting a force on the adjacent components.
  • 21A and 21B are cross-sectional views showing a twelfth escape passage of the optical lens 120 according to the twelfth embodiment of the present application.
  • the twelfth escape passage may further include an escape groove 5120 communicating with the notches G1 and G2 of the C-ring, the escape groove 5120 along the first sub-lens 1000 and the second sub-lens Contact portions between the lenses 2000 are provided in both the first barrel 104 and the second barrel 204. That is, the escape slot 5120 includes a first escape slot 5120-1 disposed in the first lens barrel 104 and a second escape slot 5120-2 disposed in the second lens barrel 204, and the first escape air The groove 5120-1 and the second escape groove 5120-2 communicate with the notches G1 and G2 of the adhesive glue 6000 to jointly serve as the twelfth escape passage.
  • the second escape groove 5120-2 may be provided in the second lens barrel 204, for example, in the shape of a bent line.
  • the one end portion 5122 of the second escape groove 5120-2 leading to the cavity 1200 is provided with a relatively large opening for preventing the inner overflow glue from blocking the escape hole; the other end of the second escape groove 5120-2
  • the 5124 leads to the outside, so that the internal space of the optical lens 120 communicates with the outside to ensure that the air pressure is relatively stable, thereby preventing the rapid flow of air from exerting a force on the adjacent components.
  • the configuration of the first escape slot 5120-1 is similar to the escape slot 5100 described with reference to FIGS. 19A and 19B, and the description thereof will not be repeated here.
  • the optical lens is provided with an escape passage for the air between the upper and lower lens components to escape, thereby avoiding the influence of the pressure generated by the thermal expansion and contraction of the air during baking on the multi-group lens, thereby Reduces the baking variation of the lens module.

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Abstract

一种可成像光学器件及其制造方法。制造方法包括：将至少两个镜头部件沿光轴(2400)预定位，使得至少两个镜头部件能够成像，其中，在相邻两个镜头部件之间的不同位置处具有第一结构间隙(2410,3410,3410',4410,5410)和第二结构间隙(2420,3420,3420',4420,5420)；通过主动校准调整已预定位的至少两个镜头部件的相对位置；在第一结构间隙(2410,3410,3410',4410,5410)布设第一粘合剂并在第二结构间隙(2420,3420,3420',4420,5420)布设第二粘合剂；以及依次先后固化第一粘合剂和第二粘合剂。可降低后期制造工艺对可成像光学器件的影响，并且通过后固化第二粘合剂来增加连接强度和可成像光学器件的可靠性。一种具有逃气通道(5010,5020,5030,5040,5050,5060,5070,5080)的光学镜头及其组装方法。

Description

可成像光学器件及其制造方法
交叉引用
本申请要求于2018年3月16日向中国专利局提交的、发明名称为“可成像光学器件及其制造方法”的第201810219941.2号发明专利申请、于2018年3月16日向中国专利局提交的、名称为“可成像光学器件”的第201820362456.6号实用新型专利申请、于2018年3月16日向中国专利局提交的、发明名称为“具有逃气通道的光学镜头及其组装方法”的第201810220345.6号发明专利申请以及于2018年3月16日向中国专利局提交的、名称为“光学镜头和摄像模组”的第201820366562.1号实用新型专利申请的优先权，上述专利申请的全部内容通过引用并入本文。
技术领域
本申请涉及光学镜头领域，具体地，本申请涉及可成像光学器件及其制造方法、光学镜头和摄像模组的解决方案，更具体地涉及具有逃气通道的光学镜头。
背景技术
随着移动电子设备的普及，被应用于移动电子设备的用于帮助使用者获取影像(例如视频或者图像)的可成像光学器件的相关技术得到了迅猛的发展和进步，并且在近年来，可成像光学器件在诸如医疗、安防、工业生产等诸多的领域都得到了广泛的应用。
为了满足越来越广泛的市场需求，高像素，小尺寸，大光圈是现有可成像光学器件不可逆转的发展趋势。市场对可成像光学器件的成像质量提出了越来越高的需求。影响既定光学设计的可成像光学器件解像力的因素包括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。其中，各元件及其装配的误差包含各镜片单体的光学面厚度、镜片光学面矢高、光学面面型、曲率半径、镜片单面及面间偏心，镜片光学面倾斜等误差，这些误差的大小取决于模具精度与成型精度控制能力。镜片间隔元件厚度的误差取决于元件的加工精度。各镜片的装配配合的误差取决于被装配元件的尺寸公差以及镜头的装配精度。镜片材料折射率的变化所引入的误差则取决于材料的稳定性以及批次一致性。
上述各个元件影响解像力的误差存在累积恶化的现象，这个累计误差会随着透镜数量的增多而不断增大。现有解像力解决方案为对于对各相对敏感度高的元件的尺寸进行公差控制、镜片回转进行补偿提高解像力，但是由于高像素大光圈的镜头较敏感，要求公差严苛，如：部分敏感镜头1μm镜片偏心会带来9′像面倾斜，导致镜片加工及组装难度越来越大，同时由于在组装过程中反馈周期长，造成镜头组装的过程能力指数(CPK)低、波动大，导致不良率高。且如上所述，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。
另一方面，在可成像光学器件的加工过程中，各个结构件的组装过程(例如感光芯片贴装、马达镜头锁附过程等)都可能导致感光芯片倾斜，多项倾斜叠加，可能导致成像模组的解析力不能达到既定规格，进而造成模组厂良品率低下。近些年来，模组厂通过在将成像镜头和感光模组组装时，通过主动校准(Active Alignment)工艺对感光芯片的倾斜进行补偿。然而这种工艺补偿能力有限。由于多种影响解像力的像差来源于光学系统本身的能力，当光学成像镜头本身的解像力不足时，现有的感光模组主动校准工艺是难以补偿的。
另一方面，镜头是摄像模组的一个重要部件，直接影响摄像模组的成像品质。在多群组镜头中，镜头部件之间使用胶水连接，因此往 往需要对镜头模组进行烘烤以使胶水凝固从而实现连接。上下镜头部件的工艺流程与一体成型的镜头件工艺流程不同的地方有，上下镜头部件在组装时，需要一个预留给上下镜头部件进行安装和调整的开放空间。该开放空间在后续流程中，需要进行密封。一般地，采用热固化的胶材进行完整地固定，由于上下镜头部件之间的空气在烘烤时会导致气体膨胀，气体膨胀会对上下镜头部件进行冲击，从而改变镜头部件的光学元件的相对位置，造成光学能力的下降。另外由于胶材的固化，开放空间也会随之固定，需要一定的上下镜头部件结构强度才能保证固定之后的开放空间不会发生变化。然而，上下镜头部件之间的空气在镜头模组被烘烤时会产生膨胀，并且在烘烤结束之后收缩，从而可能对镜头模组的可靠性产生较大的影响。
因此，如何避免在烘烤过程中空气对摄像模组的影响是本领域需要解决的问题。
发明内容
本申请旨在提供一种能够克服现有技术的上述至少一个缺陷的解决方案。
本申请的一方面提供了一种可成像光学器件制造方法，其中，所述方法包括：将至少两个镜头部件沿光轴预定位，使得所述至少两个镜头部件能够成像，其中，在相邻两个镜头部件之间的不同位置处具有第一结构间隙和第二结构间隙；通过主动校准调整已预定位的至少两个镜头部件的相对位置；在所述第一结构间隙布设第一粘合剂(例如布设第一粘合剂可以是用第一粘合剂进行点胶)并在所述第二结构间隙布设第二粘合剂(例如布设第二粘合剂可以是用第二粘合剂进行点胶)；以及依次先后固化所述第一粘合剂和所述第二粘合剂。
根据本申请的实施例，准备彼此分离且均包括至少一片镜片的至少两个镜头部件可包括：为所述至少两个镜头部件中的至少一个镜头部件配备镜筒。
根据本申请的实施例，每个所述镜头部件包括至少一片镜片，所述方法还包括：对镜筒进行塑形以使其包裹所述镜片的上表面和下表 面的至少一部分。
根据本申请的实施例，在将至少两个镜头部件沿光轴预定位之前，所述方法还可包括：将所述至少两个镜头部件中的相邻两个镜头部件的、与所述第一结构间隙对应的表面塑形为背离所述光轴方向延伸并朝向所述至少两个镜头部件的外部开口。
根据本申请的实施例，在将至少两个镜头部件沿光轴预定位之前，所述方法还可包括：将相邻的两个所述镜头部件的、与所述第一结构间隙对应的表面塑形为彼此契合；以及将相邻的两个所述镜头部件的、与所述第二结构间隙对应的表面塑形为彼此契合。
根据本申请的实施例，在将至少两个镜头部件沿光轴预定位之前，所述方法还可包括：将相邻两个镜头部件的、与所述第一结构间隙和所述第二结构间隙对应的表面塑形为均垂直于所述光轴。
根据本申请的实施例，在将至少两个镜头部件沿光轴预定位之前，所述方法还可包括：将相邻两个镜头部件中任一镜头部件的、与所述第一结构间隙和所述第二结构间隙对应的表面塑形为在同一水平面上。
根据本申请的实施例，在将至少两个镜头部件沿光轴预定位之前，所述方法还可包括：将相邻两个镜头部件的、与所述第一结构间隙对应的表面塑形为垂直于所述光轴；以及将相邻两个镜头部件的、与所述第二结构间隙对应的表面塑形为具有相对于所述光轴倾斜的倾斜段。
根据本申请的实施例，在将至少两个镜头部件沿光轴预定位之前，所述方法还可包括：在相邻两个镜头部件中的一个镜头部件上形成连接突起部；以及在所述相邻两个镜头部件中的另一个镜头部件上形成大致契合且接纳所述连接突起部的连接凹部。
根据本申请的实施例，形成连接突起部可包括：将所述连接突起部形成为在平行于所述光轴的截面上具有梯形、三角形、矩形、半圆形和双三角形等形状中的至少一种形状。
根据本申请的实施例，形成连接突起部可包括：将所述连接突起部形成为在垂直于所述光轴的截面上具有连续的形状。
根据本申请的实施例，形成连接突起部可包括：将所述连接突起部形成为在垂直于所述光轴的截面上具有分立的形状。
根据本申请的实施例，形成连接突起部可包括：围绕所述光轴等间距地形成所述连接突起部。
根据本申请的实施例，将所述至少两个镜头部件沿光轴预定位可包括：将所述至少两个镜头部件沿光轴彼此靠近，使得所述第一结构间隙和所述第二结构间隙的宽度大致相同。
根据本申请的实施例，将所述至少两个镜头部件沿光轴预定位可包括：将所述至少两个镜头部件沿光轴彼此靠近，使得所述第一结构间隙和所述第二结构间隙的宽度的范围是30-300微米，优选地为30-100微米。
根据本申请的实施例，所述第一粘合剂可以是光固化粘合剂或光热固化粘合剂。在这种情况下，所述第一结构间隙可具有能够接收光的开口。
根据本申请的实施例，所述第二粘合剂是热固化粘合剂。
根据本申请的实施例，所述第二粘合剂是光热固化粘合剂。在这种情况下，所述第二结构间隙可具有设置成具有一倾斜角度的开口。
根据本申请的实施例，固化所述第一粘合剂可包括：利用所述光固化粘合剂或所述光热固化粘合剂所敏感的光照射所述第一粘合剂。
根据本申请的实施例，固化所述第二粘合剂可包括：加热所述第二粘合剂。
本申请的另一方面提供了一种可成像光学器件，其中，所述可成像光学器件包括：至少两个镜头部件，所述至少两个镜头部件沿光轴方向依次定位，并且在相邻两个镜头部件之间的不同位置处具有第一结构间隙和第二结构间隙；第一粘合剂，所述第一粘合剂布置在所述第一结构间隙中；以及第二粘合剂，所述第二粘合剂布置在所述第二结构间隙中，其中，所述第一粘合剂和所述第二粘合剂的布置位置和材料适于使所述第一粘合剂和所述第二粘合剂在不同的时间被先后固化。
根据本申请的实施例，所述至少两个镜头部件中的至少一个镜头 部件包括镜筒。
根据本申请的实施例，所述镜筒可包裹所述镜片的上表面和下表面的至少一部分。在这种情况下，所述第一结构间隙或所述第二结构间隙沿光轴方向上与所述镜筒包裹的至少一部分可具有重叠区域。
根据本申请的实施例，相邻两个镜头部件的、与所述第一结构间隙对应的表面可背离所述光轴方向延伸并朝向所述至少两个镜头部件的外部开口。
根据本申请的实施例，相邻两个镜头部件的、与所述第一结构间隙对应的表面可彼此契合。相邻两个镜头部件的、与所述第二结构间隙对应的表面可彼此契合。
根据本申请的实施例，相邻两个镜头部件的、与所述第一结构间隙和所述第二结构间隙对应的表面均可垂直于所述光轴。
根据本申请的实施例，相邻两个镜头部件中任一镜头部件的、与所述第一结构间隙和所述第二结构间隙对应的表面可在同一水平面上。
根据本申请的实施例，相邻两个镜头部件的、与所述第一结构间隙对应的表面可垂直于所述光轴。相邻两个镜头部件的、与所述第二结构间隙对应的表面可具有相对于所述光轴倾斜的倾斜段。
根据本申请的实施例，相邻两个镜头部件中的一个镜头部件可包括朝向另一个镜头部件突出的连接突起部。所述相邻两个镜头部件中的所述另一个镜头部件可包括契合且接纳所述连接突起部的连接凹部。
根据本申请的实施例，所述连接突起部在平行于所述光轴的截面上可具有梯形、三角形、矩形、半圆形和双三角形等形状中的至少一种形状。
根据本申请的实施例，所述连接突起部在垂直于所述光轴的截面上可具有连续的形状。
根据本申请的实施例，所述连接突起部在垂直于所述光轴的截面上可具有分立的形状。
根据本申请的实施例，所述连接突起部可围绕所述光轴等间距地 布置。
根据本申请的实施例，所述第一结构间隙和所述第二结构间隙的宽度可以大致相同。
根据本申请的实施例，所述第一结构间隙和所述第二结构间隙的宽度的范围可以是30-300微米，优选地为30-100微米。
根据本申请的实施例，所述第一粘合剂可以是光固化粘合剂或光热固化粘合剂。在这种情况下，所述第一结构间隙可具有能够接收光的开口。
根据本申请的实施例，所述第二粘合剂可以是热固化粘合剂。
根据本申请的实施例，所述第二粘合剂可以是光热固化粘合剂。在这种情况下，所述第二结构间隙具有设置成具有一倾斜角度的开口。
本申请的另一方面提供了一种具有逃气通道的光学镜头。
在该方面的实施方式中，该光学镜头包括：第一子镜头，第一子镜头包括至少一个第一镜片和容纳第一镜片的第一镜筒，或者第一子镜头由单个第一镜片构成；第二子镜头，包括至少一个第二镜片和容纳第二镜片的第二镜筒；以及粘合胶，将第一子镜头与第二子镜头粘合在一起，其中，粘合胶、第一子镜头与第二子镜头共同形成一个腔体，其中，第一镜片、第一镜筒、第二镜片、第二镜筒和粘合胶中的至少一个的部分形成逃气通道，逃气通道的一端通向腔体并且逃气通道的另一端通向外界。
根据本申请的实施例，逃气通道的通向腔体的一端具有相对于逃气通道的尺寸加大的开口。
根据本申请的实施例，逃气通道的通向外界的一端具有相对于逃气通道的尺寸加大的另一开口。在某些可选实施方式中，所述另一开口具有倾斜的内表面。
根据本申请的实施例，逃气通道为：设于第一镜片、第一镜筒、第二镜片、第二镜筒中至少一项中的逃气孔。
根据本申请的实施例，逃气通道为：在平行于由第一镜片和第二镜片组成的光学系统的光轴的方向上或者相对于所述方向具有一定角度地设于第一镜筒中的逃气孔。
根据本申请的实施例，逃气通道为：在垂直于由所述第一镜片和所述第二镜片组成的光学系统的光轴的方向上或者相对于所述方向具有一定角度地设于第一镜筒和/或第二镜筒中的逃气孔。
根据本申请的实施例，第一镜片包括用于透过光线的有效区和位于有效区的外周的无效区，逃气通道为：在平行于由第一镜片和第二镜片组成的光学系统的光轴的方向上或者相对于所述方向具有一定角度地设于第一镜片的无效区中的逃气孔。
根据本申请的实施例，逃气通道为：设置在第一镜筒的面对第二镜筒的表面处和/或设置在第二镜筒的面对第一镜筒的表面处的凹槽。
根据本申请的实施例，逃气通道为：沿着第一镜筒与第一镜片之间的接触边界设于第一镜筒和/或第一镜片中的逃气槽。
根据本申请的实施例，粘合胶在平面图中呈C型环的形式，从而由C型环的缺口形成逃气通道。
根据本申请的实施例，粘合胶在平面图中呈沿径向方向彼此间隔开的多个C型环的形式。
根据本申请的实施例，所述光学镜头还包括密封最外层的C型环的缺口的密封物。
根据本申请的实施例，多个C型环的缺口在圆周方向上尽可能远地间隔开。
根据本申请的实施例，逃气通道还包括与C型环的缺口连通的逃气槽，逃气槽沿着第一子镜头与第二子镜头之间的接触部位设于第一镜筒和/或第二镜筒中。
根据本申请的实施例，光学镜头还包括密封逃气通道的通向外界的一端的密封物。
根据本申请的实施例，逃气通道在平面图中呈直线形式、折线形式和曲线形式中的至少一种形式。
本申请的另一方面提供了一种摄像模组，该摄像模组包括根据第一方面所述的光学镜头。
本申请的另一方面提供了光学镜头的组装方法。
在该方面的实施方式中，该组装方法包括：将至少一个第一镜片 容纳和安装于第一镜筒中，从而形成第一子镜头；将至少一个第二镜片容纳和安装于第二镜筒中，从而形成第二子镜头；以及利用粘合胶将第一子镜头与第二子镜头粘合在一起，其中，粘合胶、第一子镜头与第二子镜头共同形成一个腔体，其中，组装方法还包括：在粘合第一子镜头与第二子镜头的过程中，利用由设于第一镜片、第一镜筒、第二镜片、第二镜筒和粘合胶中的至少一个中的通孔和/或缺口形成逃气通道，使腔体中的空气与外界连通，其中逃气通道的一端通向腔体并且逃气通道的另一端通向外界。
根据本申请的实施例，该组装方法还包括：在光学镜头组装完成之后，密封逃气通道的通向外界的一端。
根据本申请的实施例，利用粘合胶将第一子镜头与第二子镜头粘合在一起包括：将粘合胶点胶于第一镜筒和第二镜筒上，使得粘合胶在平面图中呈C型环的形式，从而由C型环的缺口形成逃气通道。
根据本申请的实施例，点胶粘合胶包括：将粘合胶点胶多次，使得粘合胶在平面图中呈沿径向方向彼此间隔开的多个C型环的形式。
根据本申请的实施例，组装方法还包括：在光学镜头组装完成之后，密封最外层的C型环的缺口。
本申请的第四方面提供了光学镜头的组装方法。
在第四方面的实施方式中，光学镜头包括第一镜片和至少一个第二镜片，组装方法包括：
将所述至少一个第二镜片容纳和安装于第二镜筒中，从而形成第二子镜头；以及利用粘合胶将第一镜片与第二子镜头粘合在一起，其中，粘合胶、与第二子镜头共同形成一个腔体，其中，组装方法还包括：在粘合第一镜片与第二子镜头的过程中，利用由设于第一镜片、第二镜片、第二镜筒和粘合胶中的至少一个中的通孔和/或缺口形成逃气通道，使腔体中的空气与外界连通，其中逃气通道的一端通向腔体并且逃气通道的另一端通向外界。
根据本申请提供的技术方案，可成像光学器件由彼此之间相互分离的多个镜头部件组装而成并且可以通过使用第一粘合剂和第二粘合剂来提供调节量，以用于调节相邻两个镜头部件之间的相对位置。由 于第一粘合剂和第二粘合剂可以先后固化，因此：在一方面，可以通过先固化的第一粘合剂来预固定可成像光学器件以降低后期制造工艺对可成像光学器件的影响；以及在另一方面，可以通过后固化的第二粘合剂来增加连接强度和可成像光学器件的可靠性。
另外，与现有技术相比，采用本申请的技术方案至少能够实现以下有益效果：通过对镜头模组添加逃气通道设计(例如，逃气孔、凹槽、逃气槽等)，降低了镜头模组的烘烤变异，避免了在模组被烘烤的过程中因空气热胀冷缩而对模组的可靠性造成不利的影响。
附图说明
通过阅读参照以下附图所作的对非限制性实施例所作的详细描述，本申请的其它特征、目的和优点将会变得更明显：
图1是根据本申请一个实施例的可成像光学器件制造方法的流程图；
图2是根据本申请一个实施例的可成像光学器件2000的剖视图；
图3A和图3B是根据本申请一个实施例的相邻两个镜头部件的局部放大剖视图；
图4是根据本申请另一个实施例的相邻两个镜头部件的局部放大剖视图；
图5是根据本申请另一个实施例的相邻两个镜头部件的局部放大剖视图；
图6是根据本申请另一个实施例的相邻两个镜头部件的局部放大剖视图；
图7是根据本申请另一个实施例的相邻两个镜头部件的局部放大剖视图；以及
图8A和图8B是连接突起部在垂直于光轴的截面上的形状示意图。
图9是示意性示出包括根据本申请的光学镜头的摄像模组的剖视图。
图10是示出根据本申请第一实施方式的光学镜头的第一逃气通 道的剖视图。
图11是示出根据本申请第二实施方式的光学镜头的第二逃气通道的剖视图。
图12是示出根据本申请第三实施方式的光学镜头的第三逃气通道的剖视图。
图13A和图13B是示出根据本申请第四实施方式的光学镜头的第四逃气通道的剖视图。
图14是示出根据本申请第五实施方式的光学镜头的第五逃气通道的剖视图。
图15是示出根据本申请第六实施方式的光学镜头的第六逃气通道的剖视图。
图16是示出根据本申请第七实施方式的光学镜头的第七逃气通道的剖视图。
图17A和图17B是示出根据本申请第八实施方式的光学镜头的第八逃气通道的剖视图。
图18A至图18C是示出根据本申请第九实施方式的光学镜头的第九逃气通道的剖视图。
图19A和图19B是示出根据本申请第十实施方式的光学镜头的第十逃气通道的剖视图。
图20A和图20B是示出根据本申请第十一实施方式的光学镜头的第十一逃气通道的剖视图。
图21A和图21B是示出根据本申请第十二实施方式的光学镜头的第十二逃气通道的剖视图。
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、第三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，下文中讨论的第一镜头部件也可被称作第二镜头部件。
在附图中，为了便于说明，可能已稍微夸大了各部件的厚度、尺寸和形状。具体来讲，附图中所示的球面或非球面的形状通过示例的方式示出。即，球面或非球面的形状不限于附图中示出的球面或非球面的形状。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、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、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”表示“本申请的一个或多个实施方式”。并且，用语“示例性的”旨在指代示例或举例说明。
如在本文中使用的，用语“大致”、“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，并且旨在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。另外，除非明确限定或与上下文相矛盾，否则本申请所记载的方法中包含的具体步骤不必限于所记载的顺序，而可以任意顺序执行或并行地执行。例如，本申请所记载的主动校准步骤可以与粘合剂布设步骤互换地执行而不影响本申请技术方案的实施。下面将参考附图并结合实施例来详细说明本申请。
图1示出了根据本申请一个实施例的摄像模组制造方法1000的流 程图。图2示出了根据本申请一个实施例的摄像模组2000的剖视图。需要注意，图1和图2所示的实施例虽然是摄像模组的制造流程及结构，但在本申请的其它实施例中，不失一般性地，摄像模组也可以被光学镜头等其它可成像光学器件替换。
参考图1，所述制造方法包括下列步骤S1100-S1500。
首先，在步骤S1100中，准备彼此分离且均包括至少一片镜片的至少两个镜头部件。在传统的可成像光学器件中，多个镜片组装于同一镜筒内。在这种情况下，各镜片之间的相对位置基本确定，几乎不能进行调节。这意味着，镜片一旦组装于镜筒内，镜头质量即确定。因此，传统的摄像模组制造工艺对于镜筒和镜片的加工精度要求较高。根据本申请，可以准备彼此分离且均包括至少一片镜片的至少两个镜头部件。本文中所述的“准备”包括制造镜头部件的行为和/或步骤，也包括以其它方式来获取镜头部件的行为和/或步骤。这些镜头部件之间的相对位置可通过下文所述的方式进行调整。虽然在图2示出的实施例中，仅准备了两个镜头部件，但是本领域技术人员可理解，镜头部件的数量可根据实际需求而确定而不受特别限制。
在图2示出的实施例中，为摄像模组2000制备了两个镜头部件，下文中分别称作第一镜头部件2100和第二镜头部件2200。在对镜头部件的制备中，可以为第一镜头部件2100和第二镜头部件2200均配备至少一片镜片。例如，在图2示出的实施例中，为第一镜头部件2100配备了一个镜片2110，而为镜头部件2200配备了五片镜片。然而，本领域技术人员容易理解，各镜头部件中所包含的镜片的数量可根据实际需求而确定而不受特别限制。例如，第一镜头部件2100可配备有两个、三个或四个镜片，而第二镜头部件2200可配备有一个、两个、三个或四个镜片。
在图2示出的实施例中，还为各镜头部件配备了镜筒。例如，为第一镜头部件2100配备了镜筒2120。镜筒可以是如图2中第一镜头部件2100所包括的单镜筒2120，也可以是如图2中第二镜头部件2200所包括的双镜筒，例如，嵌套在一起的内镜筒和外镜筒。镜筒的作用在于固定相应镜片以及保持同一镜筒内的多个镜片的相对位置。因此， 在某镜头部件仅配备有一个镜筒的情况下，也可省略该镜筒。
在步骤S1200中，将所准备的至少两个镜头部件沿光轴预定位，使得所述至少两个镜头部件能够成像，其中，在相邻两个镜头部件之间的不同位置处具有第一结构间隙和第二结构间隙。可利用各类摄取机构来摄取各镜头部件，并且利用各类固定机构来固定待预定位的各镜头部件。在这种情况下，可以控制摄取机构相对于固定机构的相对位移来对所述至少两个镜头部件进行预定位。例如，在图2示出的实施例中，可以用固定机构(未示出)夹持并固定第二镜头部件2200，并且用摄取机构(未示出)夹持第一镜头部件2100。然后，控制摄取机构带动第一镜头部件2100靠近第二镜头部件2200。在靠近过程中，一般应保证第一镜头部件2100和第二镜头部件2200不互相接触，并且在两者之间的不同位置处分别具有第一结构间隙2410和第二结构间隙2420。预定位后的至少两个镜头部件应当具有成像能力从而保证后续的主动校准过程。结构间隙可用于布设粘合剂以连接相邻的镜头部件，这部分内容将在下文中更具体地描述。本实施例中，结构间隙可以理解为镜头部件的结构面之间的可容纳胶水的间隙。其中，镜头部件结构面可以是镜筒的底面或顶面，也可以是镜片的非光学面。
为了使得结构间隙具有均匀的形状以便于均匀地布设粘合剂，在制备镜头部件时，可以将相邻两个镜头部件的、与所述第一结构间隙对应的表面塑形为彼此契合。类似的，可以将相邻两个镜头部件的、与所述第二结构间隙对应的表面塑形为彼此契合。参照图2，第一镜头部件2100的与第一结构间隙2410对应的下表面和第二镜头部件2200的与第一结构间隙2410对应的上表面被塑形为具有彼此契合的形状。类似地，第一镜头部件2100的与第二结构间隙2420对应的下表面和第二镜头部件2200的与第二结构间隙2420对应的上表面被塑形为具有彼此契合的形状。
当第一结构间隙2410与第二结构间隙2420中填充的粘合剂相同时，不仅相邻两个镜头部件的与结构间隙对应的表面塑形为彼此契合，而且第一结构间隙2410和第二结构间隙2420还被预定位成具有大致相同的宽度。通过将第一结构间隙2410和第二结构间隙2420维持成 具有大致相同的宽度，可以使得布设在这两个结构间隙中的粘合剂具有大致相同的厚度。在这种情况下，粘合剂固化过程中产生的变异量是大致相同的。可选地，在对第一镜头部件2100和第二镜头部件2200进行预定位时，可以将第一镜头部件2100和第二镜头部件2200沿光轴2400彼此靠近，直至第一结构间隙2410和第二结构间隙2420的宽度处于30-300微米的范围，优选地为30-100微米的范围。这一宽度范围既可以保证相邻镜头部件在下文所述的主动校准过程中具有足够的调整空间，又可以尽量减小粘合剂的用量，从而降低粘合剂固化时的形变以及胶水固化后在长期的使用过程中因环境因素而导致的形变对可成像光学器件的影响。
在步骤S1300中，通过主动校准调整已预定位的至少两个镜头部件的相对位置。在主动校准过程中，可以基于光学成像结果，相对于一个固定的镜头部件调整另一活动的镜头部件的相对位置，从而满足预定的成像质量，诸如预定解像力。在主动校准过程中对于相邻镜头部件的相对位置的调节可以包括沿着光轴方向平移、垂直于光轴方向的平移、围绕光轴旋转、以及倾斜(tilt)调节。沿着光轴方向平移、垂直于光轴方向的平移，主动校准过程对第一结构间隙2410和第二结构间隙2420的改变可以看作是微调量。
例如，摄像模组2000可还包括感光组件2300。感光组件2300可包括线路板2310、安装在线路板2310上的感光元件2320、制作在线路板2310上且围绕在所述感光元件2320周围的筒状支撑体2340，以及安装在支撑体2340上的滤色元件2330。筒状支撑体2340具有向内(指朝向感光元件2320的方向)延伸的可作为镜架的延伸部，所述滤色元件2330安装在所述延伸部上。所述筒状支撑体2340还具有上表面，所述感光组件可通过该上表面与摄像模组的其它组件(例如第二镜头部件2200)连接在一起。当然，容易理解，在其它实施例中，感光组件2300也可以是其它结构，例如所述感光组件的线路板具有通孔，感光元件安装在所述线路板的通孔中；又例如所述支撑部通过模塑形成在感光元件周围并向内延伸并接触所述感光元件(例如支撑部覆盖位于所述感光元件边缘的至少一部分非感光区域)；再例如所述感 光组件还可以省略所述滤色元件。
在通过主动校准来调整第一镜头部件2100和第二镜头部件2200的相对位置的过程中，可以用固定机构(未示出)夹持并固定第二镜头部件2200，并且用摄取机构(未示出)夹持第一镜头部件2100。然后，根据感光组件2300采集的光学成像结果来微调第一镜头部件2100相对于第二镜头部件2200的位置。例如，可以调节第一镜头部件2100相对于第二镜头部件2200的平移位置，诸如直角坐标系中的X平移量、Y平移量和Z平移量。此外，还可以调节第一镜头部件2100相对于第二镜头部件2200的角度，诸如偏航角(Yaw)、俯仰角(Pitch)和滚转角(Roll)。
在步骤S1400中，在所述第一结构间隙布设第一粘合剂并在所述第二结构间隙布设第二粘合剂。
根据本申请的一个实施例，第一粘合剂可以是光固化粘合剂。例如，第一粘合剂可以是紫外光(UV)固化胶。UV固化胶中的光引发剂(或光敏剂)在UV的照射下吸收UV后产生活性自由基或阳离子，引发单体聚合、交联化学反应，使粘合剂可在短时间内由液态转化为固态。或者，第一粘合剂可以是光热固化粘合剂。该光热固化粘合剂在对应光谱的光照射并加热的条件下可发生固化，例如，UV热固胶。当第一粘合剂是光固化粘合剂或光热固化粘合剂时，第一结构间隙2410应当具有能够接收光的开口，以便于进行后续的粘合剂固化操作。
根据本申请的一个实施例，第二粘合剂可以是热固化粘合剂，例如，环氧树脂等。热固化粘合剂可以在加热条件下发生固化。
根据本申请的另一个实施例，第二粘合剂也可以是光热固化粘合剂。
虽然本申请中将光固化粘合剂、热固化粘合剂和光热固化粘合剂示作为第一粘合剂和第二粘合剂的示例，但本领域技术人员应当理解，第一粘合剂和第二粘合剂的类型不限于此。可根据实际需求使用任意类型的粘合剂。例如，还可以使用催化剂固化粘合剂。第一粘合剂和第二粘合剂的布置位置和材料适于使所述第一粘合剂和所述第二粘合 剂在不同的时间被先后固化。例如，当第一粘合剂和第二粘合剂都是光热固化粘合剂时，可选择具有不同固化温度的粘合剂，或者可将第一结构间隙的光照开口与第二结构间隙的光照开口设置成就接收光线的方面而言彼此独立。
根据本申请的一个实施例，在准备彼此分离且均包括至少一片镜片的至少两个镜头部件时，可将相邻两个镜头部件的、与所述第一结构间隙对应的表面塑形为背离所述光轴方向延伸并朝向所述至少两个镜头部件的外部开口；以及将相邻两个镜头部件的、与所述第二结构间隙对应的表面塑形为朝向所述光轴方向延伸并朝向所述至少两个镜头部件的内部开口。如图2所示，第一镜头部件2100和第二镜头部件2200的、与第一结构间隙2410对应的表面分别背离光轴2400延伸，并且朝向第一镜头部件2100和第二镜头部件2200的外部形成第一开口2510。第一开口2510可用于接收固化第一粘合剂所使用的光。另外，第一镜头部件2100和第二镜头部件2200的、与第二结构间隙2420对应的表面分别朝向光轴2400延伸，并且朝向第一镜头部件2100和第二镜头部件2200的内部形成第二开口2520。在第二粘合剂是光热固化粘合剂的情况下，第二开口2520可设置有一定的倾斜角度从而可以防止外界杂质对镜片的污染。
在步骤S1500中，依次先后固化所述第一粘合剂和所述第二粘合剂。例如，在第一粘合剂是光固化粘合剂或光热固化粘合剂时，可使用第一粘合剂所敏感的光来照射第一粘合剂。例如，可使用UV来照射UV固化胶或UV热固胶。根据第一粘合剂的成分和性质，还可为其提供适宜的固化温度。在第二粘合剂是热固化粘合剂或光热固化粘合剂时，可根据第二粘合剂的成分和性质，为第二粘合剂提供适宜的固化温度。在步骤S1500中，通过合理地安排第一粘合剂和第二粘合剂的固化条件来保证第一粘合剂和第二粘合剂被先后固化。进一步地，可以通过先固化的第一粘合剂来预固定摄像模组以降低后期制造工艺对摄像模组的影响；以及可以通过后固化的第二粘合剂来增加连接强度和摄像模组的可靠性。在这种情况下，一方面可保证最终形成的可成像光学器件的结构强度，另一方面可以在工艺的流转过程中保证可 成像光学器件的内部结构的相对位置。
以下给出一些非限制性的示例：在可成像光学器件的制备和组装过程中，可能一些固化步骤需要涉及对半成品的可成像光学器件的移动，在移动过程中，其内部结构的相对位置可能会发生变化。因此，可采用分步固化的方式来对可成像光学器件进行固化。例如，热固胶或UV热固胶需要在较高温度下进行烘烤才可达到设计强度，这一烘烤操作往往在与执行主动校准的设备分离的另一设备上进行。因此，半成品状态的可成像光学器件会经历移动。在这种情况下，可例如在机台上短时曝光填充在第一结构间隙中的UV固化胶或者UV热固胶以达到预固定的效果。然后，可将可成像光学器件移动至烘烤室中进行烘烤，以完全固化填充在第二结构间隙中的UV热固胶或者热固胶。在这一过程中，第一结构间隙中的粘合剂也可得到充分固化。
应注意，图1中的步骤S1300与步骤S1400并无明确的先后顺序。即，方法1000可按照S1100→S1200→S1300→S1400→S1500的顺序来先后执行，也可按照S1100→S1400→S1200→S1300→S1500的顺序来先后执行。如果先进行主动校准(S1300)再进行粘合剂布设(S1400)，则粘合剂布设过程可具备充裕的时间。如果先进行粘合剂布设(S1400)再进行主动校准(S1300)，则可以保证主动校准的过程已考虑了粘合剂布设所带来的部分影响，因此，主动校准和粘合剂固化可更接近于原位(In Situ)工艺。
图3A和图3B是根据本申请一个实施例的相邻两个镜头部件的局部放大剖视图。
在图3A所示的实施例中，相邻两个镜头部件的、与所述第一结构间隙和所述第二结构间隙对应的表面均被塑形为垂直于所述光轴。具体地，在图3A所示的实施例中，光轴方向为竖直方向。第一镜头部件3100的与第一结构间隙3410对应的表面3121和第二镜头部件3200的与第一结构间隙3410对应的表面3122彼此并行，并且均水平延伸。另外，第一镜头部件3100的与第二结构间隙3420对应的表面3123和第二镜头部件3200的与第二结构间隙3420对应的表面3124彼此并行，并且均水平延伸。另外，第一结构间隙3410和第二结构间 隙3420彼此间隔开。例如，第一结构间隙3410与第二结构间隙3420之间具有竖直的隔离段。将镜头部件准备成如上所述的配置，在将摄像模组竖直放置以准备固化时，粘合剂不易受重力影响而在结构间隙中扩散或混合。
在图3B所示的实施例中，相邻两个镜头部件中任一镜头部件的、与所述第一结构间隙和所述第二结构间隙对应的表面被塑形为在同一水平面上。具体地，在图3B所示的实施例中，第一镜头部件的与第一结构间隙3410'对应的表面3121’和与第二结构间隙3420'对应的表面3123’在同一水平面上。第二镜头部件的与第一结构间隙3410'对应的表面3122’和与第二结构间隙3420'对应的表面3124’在同一水平面上。在这种情况下，从第一结构间隙3410’射入的光也可到达第二结构间隙3420’。因此，在第一结构间隙3410’和第二结构间隙3420’中均可布置UV热固胶。另外，在分别固化第一结构间隙3410’和第二结构间隙3420’处的胶材后，在第二结构间隙的外侧开口3500处可布置有防水补强胶以防止外部水汽渗入可成像光学器件内部，防水补强胶还有补强结构的作用。该防水补强胶填充整个外侧开口3500，优选的是，胶材为具有固化后防水的UV胶或者UV热固胶。该防水补强胶具有防止第一粘合剂和第二粘合剂吸收水汽而变异的作用。
图4是根据本申请另一个实施例的相邻两个镜头部件的局部放大剖视图。在图4所示的实施例中，相邻两个镜头部件的、与所述第一结构间隙对应的表面被塑形为垂直于所述光轴。此外，相邻两个镜头部件的、与所述第二结构间隙对应的表面被塑形为具有相对于所述光轴倾斜的倾斜段。具体地，在图4所示的实施例中，光轴方向为竖直方向。第一镜头部件4100的与第一结构间隙4410对应的表面4121和第二镜头部件4200的与第一结构间隙4410对应的表面4122彼此并行，并且均水平延伸。另外，第一镜头部件4100的与第二结构间隙4420对应的表面4123和第二镜头部件4200的与第二结构间隙4420对应的表面4124具有相对于所述光轴倾斜的倾斜段4125和4126。另外，第一结构间隙4410的宽度与第二结构间隙4420的宽度可大致相同。通过设置具有倾斜通道的结构间隙，可以增大粘合剂布设面积， 从而增强相邻镜头部件之间的粘合力。另外，由于粘合剂布设面积得以增加，所以可在相同粘合强度的条件下配置更小的结构间隙宽度。此外，与第一结构间隙对应的表面也可被塑形为相对于光轴倾斜，倾斜段也可具备一定的弧度。
图5是根据本申请另一个实施例的相邻两个镜头部件的局部放大剖视图。在图5所示的实施例中，镜筒5120被塑形为包裹镜片5110的上表面和下表面的至少一部分。此外，第一结构间隙5410或第二结构间隙5420沿光轴方向上与镜筒5120包裹的至少一部分具有重叠区域。通过将镜筒设置成包裹镜片，可以给相邻镜头部件的连接提供更大的面积，从而增强相邻镜头部件之间的粘合力。
图6是根据本申请另一个实施例的相邻两个镜头部件的局部放大剖视图。在图6所示的实施例中，在制备镜头组件时：在相邻两个镜头部件中的一个镜头部件上形成连接突起部；以及在所述相邻两个镜头部件中的另一个镜头部件上形成契合且接纳所述连接突起部的连接凹部。具体地，在图6所示的实施例中，在相邻第一镜头部件6100和第二镜头部件6200的第一镜头部件6100上形成连接突起部6610，并且在第二镜头部件6200上形成连接凹部6620。连接凹部6620的形状与连接突起部6610的形状大致匹配并且能够接纳连接突起部6610。连接突起部与连接凹部的形状关系不受特殊限制，只要在制造摄像模组时，能够在连接突起部6610与连接凹部6620之间预留一定间隙以形成第一结构间隙和第二结构间隙。另外，第一结构间隙的宽度与第二结构间隙的宽度可大致相同。由于连接突起部6610和连接凹部6620上下相互嵌合，所以制造完成后的摄像模组的结构强度得以增大。例如，在垂直于光轴的横向方向上的冲击可由彼此嵌合的部分之间的弹力抵消。
在制备这样的连接突起部和连接凹部时，可以将所述连接突起部形成为在平行于所述光轴的截面上具有梯形、三角形、矩形、半圆形和双三角形等形状中的至少一种形状。容易理解，此时连接凹部具有与连接突起部相匹配的形状。
图7是根据本申请另一个实施例的相邻两个镜头部件的局部放大 剖视图。除了连接突起部和连接凹部形成的位置之外，图7所示的实施例与图6所示的实施例大致相同。在图7所示的实施例中，在相邻第一镜头部件7100和第二镜头部件7200的第二镜头部件7200上形成连接突起部7610，并且在第一镜头部件7100上形成连接凹部7620。连接凹部7620的形状与连接突起部7610的形状匹配并且能够接纳连接突起部7610。
图8A和图8B是连接突起部在垂直于光轴的截面上的形状示意图。如图8A所示，连接突起部8610可形成为在垂直于所述光轴的截面上具有连续的形状，例如封闭的圆环。在这种情况下，粘合剂的附着面较大。由于粘合剂附着面得以增加，所以可在相同粘合强度和粘合剂用量的条件下配置更小的结构间隙宽度。可替代地，如图8B所示，连接突起部8710可形成为在垂直于所述光轴的截面上具有分立的形状。这些分立的连接突起部8710彼此之间可具有不相等的间距，但优选地，可具有相等的间距。例如，连接突起部8710可围绕光轴等间距地形成在一个圆上。
参照图2，本申请还提供了一种摄像模组2000。所述摄像模组2000包括：至少两个镜头部件，所述至少两个镜头部件中的每个镜头部件均包括至少一片镜片且沿光轴方向依次定位，并且在相邻两个镜头部件之间的不同位置处具有第一结构间隙和第二结构间隙；第一粘合剂，所述第一粘合剂布置在所述第一结构间隙中；以及第二粘合剂，所述第二粘合剂布置在所述第二结构间隙中，其中，所述第一粘合剂和所述第二粘合剂的布置位置和材料适于使所述第一粘合剂和所述第二粘合剂在不同的时间被先后固化。
当第一粘合剂与第二粘合剂不同时，所述第一结构间隙与所述第二结构间隙可彼此间隔开以防止第一粘合剂与第二粘合剂彼此混杂。所述至少两个镜头部件中的至少一个镜头部件还可包括镜筒。所述镜筒可包裹所述镜片的上表面和下表面的至少一部分。在这种情况下，所述第一结构间隙或所述第二结构间隙沿光轴方向上与所述镜筒包裹的至少一部分可具有重叠区域。
相邻两个镜头部件的、与所述第一结构间隙对应的表面可背离所 述光轴方向延伸并朝向所述至少两个镜头部件的外部开口。另外，相邻两个镜头部件的、与所述第二结构间隙对应的表面可朝向所述光轴方向延伸并朝向所述至少两个镜头部件的内部开口。内部开口可设置有一定的倾斜角度从而可以防止外界杂质对镜片的污染。内部开口还能防止因溢胶而造成镜片污染的效果。
相邻两个镜头部件的、与所述第一结构间隙对应的表面可彼此契合。相邻两个镜头部件的、与所述第二结构间隙对应的表面可彼此契合。相邻两个镜头部件的、与所述第一结构间隙和所述第二结构间隙对应的表面均可垂直于所述光轴。相邻两个镜头部件的、与所述第一结构间隙和所述第二结构间隙对应的表面在同一水平面上。可替代地，相邻两个镜头部件的、与所述第一结构间隙对应的表面可垂直于所述光轴；以及相邻两个镜头部件的、与所述第二结构间隙对应的表面可具有相对于所述光轴倾斜的倾斜段。可替代地，相邻两个镜头部件中的一个镜头部件可包括朝向另一个镜头部件突出的连接突起部；以及所述相邻两个镜头部件中的所述另一个镜头部件可包括契合且接纳所述连接突起部的连接凹部。
所述连接突起部在平行于所述光轴的截面上可具有梯形、三角形、矩形、半圆形和双三角形等形状中的至少一种形状。所述连接突起部在垂直于所述光轴的截面上可具有连续的形状。可替代地，所述连接突起部在垂直于所述光轴的截面上可具有分立的形状。在这种情况下，所述连接突起部可围绕所述光轴等间距地布置(可不等距，优选等距)。
所述第一结构间隙和所述第二结构间隙的宽度可以相同。
所述第一粘合剂可以是光固化粘合剂或光热固化粘合剂。在这种情况下，所述第一结构间隙可具有能够接收光的开口。
所述第二粘合剂可以是热固化粘合剂。
所述第二粘合剂可以是光热固化粘合剂。在这种情况下，所述第二结构间隙具有能够接收光的开口。
下面参考附图对根据本申请的具有逃气通道的光学镜头进行详细描述。本申请主要讨论多群组光学镜头(也称为镜头模组)。
图9是示意性示出包括根据本申请的光学镜头的摄像模组1的剖视图。
根据本申请的一个实施例方式，摄像模组1包括光学镜头和感光组件。其中，光学镜头包括：第一子镜头1000，包括至少一个第一镜片102和容纳第一镜片102的第一镜筒104；第二子镜头2000，包括至少一个第二镜片202和容纳第二镜片202的第二镜筒204；粘合胶6000(如图18A至图21B中所示)，将第一子镜头1000与第二子镜头2000粘合在一起，其中，粘合胶6000、第一子镜头1000与第二子镜头2000共同形成一个腔体1200，第一镜片102、第一镜筒104、第二镜片202、第二镜筒204和粘合胶6000中的至少一个的部分形成逃气通道(后文将详细描述)，该逃气通道的一端通向腔体1200并且逃气通道的另一端通向外界。
相应地，根据本申请的光学镜头的组装方法包括：将至少一个第一镜片容纳和安装于第一镜筒中，从而形成第一子镜头；将至少一个第二镜片容纳和安装于第二镜筒中，从而形成第二子镜头；以及利用粘合胶将第一子镜头与第二子镜头粘合在一起，其中，粘合胶、第一子镜头与第二子镜头共同形成一个腔体，其中，组装方法还包括：在粘合第一子镜头与第二子镜头的过程中，利用由设于第一镜片、第一镜筒、第二镜片、第二镜筒和粘合胶中的至少一个中的通孔和/或缺口形成逃气通道，使腔体中的空气与外界连通，其中逃气通道的一端通向腔体并且逃气通道的另一端通向外界。
在某些实施方式中，第一子镜头1000可以只包括单个第一镜片102，而不包括第一镜筒104。例如，第一镜片102可以直接利用粘合胶6000粘于第二子镜头2000上。该实施方式的其余配置和安装方法与包括第一镜筒104的实施方式类似，因此，本文仅以包括第一镜筒104的实施方式为例进行详细描述。
第一子镜头1000设置为上镜头部件并且包括第一镜片102和第一镜筒104。第一镜片102在中央处具有在平面图中呈圆形的凸出部以进行光学成像；并且在外周处具有平坦的外缘部，以便容纳于第一镜筒104中。在成像过程中，第一镜片102的凸出部为透过光线的有效 区，而第一镜片102的外缘部为无效区。
与第一镜片102的结构相对应地，第一镜筒104的中央为空的，以容纳第一镜片102并且允许光传播通过第一镜片102；第一镜筒104的内圆周侧具有凹入的平坦的台阶部。通过将第一镜筒104的台阶部与第一镜片102的外缘部连接固定，将第一镜片102和第一镜筒104连接成一体以形成第一子镜头1000。
第二子镜头2000设置为下镜头部件并且包括第二镜片202和第二镜筒204。第二子镜头2000的元件及元件之间的连接方式可与第一子镜头1000的那些类似，在此不重复描述而是仅阐述差异之处。如图9所示，与第一镜片102仅包括一个镜片不同，第二镜片202包括五个镜片。
值得一提的是，第一镜片102和第二镜片202的数量仅为示例而非限制，例如，第二镜片202可设置为一个、两个、三个、四个等。此外，每个镜片应当广义地理解为包括由单镜片或者胶合而成的镜片堆叠，或者以其他方式形成的镜片堆叠。此外，第一子镜头1000不限于上镜头部件以及第二子镜头2000不限于下镜头部件，例如，第一子镜头1000可以为下镜头部件。
第一子镜头1000通过粘合胶6000与第二子镜头2000粘合在一起，具体地，第一子镜头1000的第一镜筒104与第二子镜头2000的第二镜筒204通过粘合胶6000(将在后文中详细描述)粘合在一起，使得第一镜片102和第二子镜头2000组合成一成像清晰、物象相似、形变较小的光学系统(本领域技术人员应该知道，在理想情况下，例如使得第一镜片102和所有的第二镜片202的中心垂线对准在摄像模组的光轴402上以组成所述光学系统)，并且使得第一子镜头1000与第二子镜头2000之间形成腔体1200。
在组装过程中，为了使粘结第一子镜头1000和第二子镜头2000的粘合剂固化，需要对光学镜头(具体地，对粘合胶6000)进行烘烤，因此，腔体1200中的空气可能因烘烤时和烘烤之后的温度差异而发生热胀冷缩效应，从而可能影响光学镜头的成像精度。因此，根据本申请的光学镜头设置有逃气通道(图9中未示出)，以将腔体1200与外 界连通从而排出空气。逃气通道可设置在第一镜片102、第一镜筒104、第二镜片202、第二镜筒204和粘合胶6000中的至少一个中，并且可具有各种形式，只要能实现上述功能即可，这将在后文详细描述。
此外，除了上述光学镜头之外，摄像模组1还包括接收由第一镜片102和第二镜片202所形成的像的感光组件3000。感光组件3000可包括：带有阻容元件的线路板302、安装在线路板302上的感光元件304、制作在线路板302上且围绕在所述感光元件304周围的筒状支撑体306、以及在感光元件304上方安装于支撑体306上的滤光元件308。
下面将结合图10至图21B详细地描述根据本申请的光学镜头的逃气通道。为了图示的清楚，图10至图21B中可能仅示出图9的光学镜头1的展示第一子镜头1000和第二子镜头2000的连接部位以及展示腔体1200的部分，具体地，仅示出图9中被圈出的部位A。
根据本申请，提供了一个多群组镜头模组和至少一逃气通道的设计。在光学镜头模组的部件中增设逃气通道，使得该逃气通道协同第一子镜头与第二子镜头之间的调整间隙一起为空气提供逸出通道，从而使得第一子镜头与第二子镜头之间的封闭空气同外界连通。这里，逃气通道可以是用于逃气的孔、通道、槽、间隙、缺口等，其结构不受具体限制，只要能够满足以下需求即可：使得当热胀冷缩时空气可以顺利逃逸或流出，以避免对毗邻部件造成过大力的作用，从而导致两子镜头的相对位置发生偏移或光学系统部件发生形变，进而影响光学性能。
在可选实施例中，逃气通道的通向腔体的一端具有相对于逃气通道的尺寸加大的开口。通过这样的加大逃气通道尺寸的设计，可以防止内侧溢胶堵住逃气孔。具体地，在烘烤时气体压强会发生变化，因此，尺寸加大的开口因为垂直于气体流动方向的截面面积大所以流速较慢；而相比之下，当气体流经逃气通道时，因为尺寸较小的逃气通道垂直于气体流动方向的截面面积小所以会造成气体流速的增加从而更加快速排除气体，如此一来，能够防止因加热过快时气体来不及排 除而对毗邻部件施加过大力的作用，从而导致两子镜头的相对位置发生偏移或光学系统部件发生。
在可选实施例中，逃气孔通向外界的一端也具有一开口，方便封胶时胶水具有一更大的接触面积，更进一步地，逃气孔通向外界的一端的开口具有一倾斜内表面。当封胶时，胶水能够沿着倾斜面填充满开口，方便胶水流动进而填充均匀。此外，该倾斜内表面还兼备容纳溢胶的功能。
在可选实施例中，逃气通道可为：设于第一镜片、第一镜筒、第二镜片、第二镜筒中至少一项中的逃气孔。
在可选实施例中，逃气通道的通向外界的一端在光学镜头组装完成之后被密封。这样，可以壁免诸如灰尘的外来物从逃气通道进入光学镜头的内部。
在可选实施例中，逃气通道在平面图中可大致呈直线形式、折线形式和曲线形式(诸如，S型线)中的至少一种形式，甚至还可为其他规则或不规则的形式。例如，在逃气通道包括缺口的情况中，逃气通道可具有不规则形状；这是因为，缺口的形成依赖于点胶路径的避让设计(具体地，点胶后俯视为两侧胶水自然围出的空间)以及上下群的挤压，而每次挤压造成的缺口都可能不相同。相比于直线形式，折线、曲线等形式还能够实现以下效果：即使没有利用胶水对逃气通道的出口进行密封，也可防止灰尘从逃气通道进入光学镜头的内部。在本文中，为了方便图示和描述，以直线和/或拆线形式为例示出逃气通道。
下面，参考图10至图21B分别详细地描述根据本申请第一至第十二实施方式的光学镜头的逃气通道。具体地，图10至图15示出设置在第一子镜头1000(即，上镜头部件)中的逃气通道，图16至图17B示出设置在第二子镜头2000(即，下镜头部件)中的逃气通道，以及图18A至图21B示出设置在第一子镜头1000与第二子镜头2000之间的逃气通道。
图10是示出根据本申请第一实施方式的光学镜头10的第一逃气通道5010的剖视图。
根据本申请的第一实施方式，第一逃气通道5010可为：在平行于由第一镜片和第二镜片组成的光学系统的光轴的方向(例如，在图10中示为竖直方向)上或者相对于所述方向具有一定角度地设于第一镜筒104中的逃气孔。
如图10所示，第一逃气通道5010例如可竖直地设于第一镜筒104中。第一逃气通道5010的通向腔体1200的一端部512(底部)设有一个相对较大的开口，用以防止内侧溢胶堵住逃气孔；第一逃气通道5010的另一端部514通向外界，使得光学镜头10的内部空间与外界连通，以保证气压相对稳定从而防止空气急剧流动对毗邻部件施加力的作用。
图11是示出根据本申请第二实施方式的光学镜头20的第二逃气通道5020的剖视图。
根据本申请的第二实施方式，第二逃气通道5020可为：在垂直于由所述第一镜片和所述第二镜片组成的光学系统的光轴的方向(例如，在图11中示为水平方向)上或者相对于所述方向具有一定角度地设于第一镜筒104中的逃气孔。
如图11所示，第二逃气通道5020例如可水平地设于第一镜筒104中。第二逃气通道5020的通向腔体1200的一端部522设有一个相对较大的开口，用以防止内侧溢胶堵住逃气孔；第二逃气通道5020的另一端部524通向外界，使得光学镜头20的内部空间与外界连通，以保证气压相对稳定从而防止空气急剧流动对毗邻部件施加力的作用。
图12是示出根据本申请第三实施方式的光学镜头30的第三逃气通道5030的剖视图。
根据本申请的第三实施方式，第三逃气通道5030可为：在平行于由第一镜片和第二镜片组成的光学系统的光轴的方向上或者相对于所述方向具有一定角度地设于第一镜片102的无效区中的逃气孔。如前面阐述的那样，第一镜片102的无效区表示第一镜片102的不参与成像的外缘部。然而应理解，本文的无效区仅为示例，其也可以不设置在镜片的外周或具有其他配置，只要不影响成像即可。
如图12所示，第三逃气通道5030例如可竖直地设于第一镜片102 的无效区中。第三逃气通道5030的通向腔体1200的一端部532设有一个相对较大的开口，用以防止内侧溢胶堵住逃气孔；第三逃气通道5030的另一端部534通向外界，使得光学镜头30的内部空间与外界连通，以保证气压相对稳定从而防止空气急剧流动对毗邻部件施加力的作用。
图13A和图13B是示出根据本申请第四实施方式的光学镜头40的第四逃气通道5040的主视剖视图和俯视剖视图。
根据本申请的第四实施方式，第四逃气通道5040可为：设置在第一镜筒104的面对第二镜筒204的表面处的凹槽。
如图13A和图13B所示，第四逃气通道5040例如可水平地设于第一镜筒104中，并且其面向第二镜筒204的表面敞开。第四逃气通道5040的通向腔体1200的一端部542设有一个相对较大的开口，用以防止内侧溢胶堵住逃气孔；第四逃气通道5040的另一端部544通向外界，使得光学镜头40的内部空间与外界连通，以保证气压相对稳定从而防止空气急剧流动对毗邻部件施加力的作用。
具体地，可以通过将第一镜筒104的面向连接面的部分去除，来提供较大的槽作为逃气通道，这不仅可以增加通气通道的大小，还可以降低逃气孔的制作难度。
图14是示出根据本申请第五实施方式的光学镜头50的第五逃气通道5050的剖视图。
根据本申请的第五实施方式，第五逃气通道5050可为：沿着第一镜筒104与第一镜片102之间的接触边界设于第一镜筒104中的逃气槽。
如图14所示，第五逃气通道5050例如可呈L形的形式沿着第一镜片102设于第一镜筒104中。第五逃气通道5050的通向腔体1200的一端部552设有一个相对较大的开口，用以防止内侧溢胶堵住逃气孔；第五逃气通道5050的另一端部554通向外界，使得光学镜头50的内部空间与外界连通，以保证气压相对稳定从而防止空气急剧流动对毗邻部件施加力的作用。
图15是示出根据本申请第六实施方式的光学镜头60的第六逃气 通道5060的剖视图。
根据本申请的第六实施方式，第六逃气通道5060可为：沿着第一镜筒104与第一镜片102之间的接触边界设于第一镜片102中的逃气槽。
如图15所示，第六逃气通道5060例如可呈L形的形式沿着第一镜筒104设于第一镜片102中。第六逃气通道5060的通向腔体1200的一端部562设有一个相对较大的开口，用以防止内侧溢胶堵住逃气孔；第六逃气通道5060的另一端部564通向外界，使得光学镜头60的内部空间与外界连通，以保证气压相对稳定从而防止空气急剧流动对毗邻部件施加力的作用。
图16是示出根据本申请第七实施方式的光学镜头70的第七逃气通道5070的剖视图。
根据本申请的第七实施方式，第七逃气通道5070可为：在垂直于由所述第一镜片和所述第二镜片组成的光学系统的光轴的方向上或者相对于所述方向具有一定角度地设于第二镜筒204中的逃气孔。值得一提的是，该第七实施方式可与前述第二实施方式组合使用，即，逃气通道可在垂直于由所述第一镜片和所述第二镜片组成的光学系统的光轴的方向上或者相对于所述方向具有一定角度地设于第一镜筒104和第二镜筒204二者中
如图16所示，第七逃气通道5070例如可水平地设于第二镜筒204中。第七逃气通道5070的通向腔体1200的一端部572设有一个相对较大的开口，用以防止内侧溢胶堵住逃气孔；第七逃气通道5070的另一端部574通向外界，使得光学镜头70的内部空间与外界连通，以保证气压相对稳定从而防止空气急剧流动对毗邻部件施加力的作用。
图17A和图17B是示出根据本申请第八实施方式的光学镜头80的第八逃气通道5080的剖视图。
根据本申请的第八实施方式，第八逃气通道5080可为：设置在第二镜筒204的面对第一镜筒104的表面处的凹槽。值得一提的是，该第八实施方式可与前述第四实施方式组合使用，即，逃气通道可为设置在第一镜筒104的面对第二镜筒204的表面处的凹槽和设置在第二 镜筒204的面对第一镜筒104的表面处的凹槽二者。
如图17A和图17B所示，第八逃气通道5080例如可水平地设于第二镜筒204中，并且其面向第一镜筒104的表面敞开。第八逃气通道5080的通向腔体1200的一端部582设有一个相对较大的开口，用以防止内侧溢胶堵住逃气孔；第八逃气通道5080的另一端部584通向外界，使得光学镜头80的内部空间与外界连通，以保证气压相对稳定从而防止空气急剧流动对毗邻部件施加力的作用。
图18A至图18C是示出根据本申请第九实施方式的光学镜头90的第九逃气通道的剖视图。此外，图18A至图18C还示出前述的粘合胶6000。
根据本申请的第九实施方式，粘合胶6000(包括610和620)在平面图中呈C型环的形式，从而由C型环的缺口G1和G2形成第九逃气通道。
在可选的实施例中，粘合胶6000在平面图中可呈沿径向方向彼此间隔开的多个C型环的形式。
如图18A所示，第一子镜头1000和第二子镜头2000使用粘合胶6000(例如，胶水)连接。如图18B所示，在俯视图中观察，粘合胶6000例如可呈环状分布，并且环状胶水带设有缺口(例如，G1和G2)以由缺口充当逃气通道，也就是说，粘合胶6000呈C型分布。如果存在两次及以上的点胶，则每次点胶均需留一个缺口作为通气孔使用，如图18B所示的那样。例如，就两次点胶而言，分次固化外层胶水和内层胶水，并且例如可对外层脱水进行光固化而对内层胶水进行热固化。
在可选的实施例中，最外层的C型环的缺口可在光学镜头组装完成之后被密封，也就是说，光学镜头还包括密封逃气通道的通向外界的一端的密封物。通常，当烘烤结束时需要密封逃气通道，以防止灰尘或其他脏物从逃气通道进行光学镜头内部。在点胶两次及以上的情况下，只需密封最外圈粘合胶的缺口。
在可选的实施例中，如图18C所示，多个C型环的缺口可在圆周方向上尽可能远地间隔开。该实施例主要适用于点胶次数为两次及以 上的情况。通过将多个环状胶水带的缺口之间的距离设置成尽可能远，灰尘不易从两个缺口进入镜片的有效区域内，因此可以省去最后密封缺口的步骤。
除了在粘合胶上设置缺口作为逃气通道，还可以沿着第一子镜头和第二子镜头的在其连接处的表面设置逃气槽，每条逃气槽相邻两侧各设置至少一个凹部，用于储存侧边溢出的多余胶水，防止胶水溢出堵住逃气槽。下面将结合图19A至图21B对此进行描述。
图19A和图19B是示出根据本申请第十实施方式的光学镜头100的第十逃气通道的剖视图。
根据本申请的第十实施方式，第十逃气通道还可包括与C型环的缺口G1和G2连通的逃气槽5100，逃气槽5100沿着第一子镜头1000与第二子镜头2000之间的接触部位设于第一镜筒104中。也就是说，逃气槽5100与粘合胶6000的缺口G1和G2连通，从而共同充当第十逃气通道。
如图19A和图19B所示，逃气槽5100例如可呈弯折线的形状设于第一镜筒104中。逃气槽5100的通向腔体1200的一端部5102设有一个相对较大的开口，用以防止内侧溢胶堵住逃气孔；逃气槽5100的另一端部5104通向外界，使得光学镜头100的内部空间与外界连通，以保证气压相对稳定从而防止空气急剧流动对毗邻部件施加力的作用。
图20A和图20B是示出根据本申请第十一实施方式的光学镜头110的第十一逃气通道的剖视图。
根据本申请的第十一实施方式，第十一逃气通道还可包括与C型环的缺口G1和G2连通的逃气槽5110，逃气槽5110沿着第一子镜头1000与第二子镜头2000之间的接触部位设于第二镜筒204中。也就是说，逃气槽5110与粘合胶6000的缺口G1和G2连通，从而共同充当第十一逃气通道。
如图20A和图20B所示，逃气槽5110例如可呈弯折线的形状设于第二镜筒204中。逃气槽5110的通向腔体1200的一端部5112设有一个相对较大的开口，用以防止内侧溢胶堵住逃气孔；逃气槽5110的 另一端部5114通向外界，使得光学镜头110的内部空间与外界连通，以保证气压相对稳定从而防止空气急剧流动对毗邻部件施加力的作用。
图21A和图21B是示出根据本申请第十二实施方式的光学镜头120的第十二逃气通道的剖视图。
根据本申请的第十二实施方式，第十二逃气通道还可包括与C型环的缺口G1和G2连通的逃气槽5120，逃气槽5120沿着第一子镜头1000与第二子镜头2000之间的接触部位设于第一镜筒104和第二镜筒204二者中。也就是说，逃气槽5120包括设于第一镜筒104中的第一逃气槽5120-1和设于第二镜筒204中的第二逃气槽5120-2，并且第一逃气槽5120-1和第二逃气槽5120-2与粘合胶6000的缺口G1和G2连通，从而共同充当第十二逃气通道。
如图21A和图21B所示，以第二逃气槽5120-2为例，第二逃气槽5120-2例如可呈弯折线的形状设于第二镜筒204中。第二逃气槽5120-2的通向腔体1200的一端部5122设有一个相对较大的开口，用以防止内侧溢胶堵住逃气孔；第二逃气槽5120-2的另一端部5124通向外界，使得光学镜头120的内部空间与外界连通，以保证气压相对稳定从而防止空气急剧流动对毗邻部件施加力的作用。第一逃气槽5120-1的配置与参考图19A和图19B描述的逃气槽5100类似，在此不重复描述。
值得一提的是，虽然本申请以第一至第十二实施方式示出逃气通道的配置，但是应理解，以上各实施方式中的逃气通道可根据需要单独地使用或者任意组合地使用。
根据本申请，光学镜头设置有用于使上、下镜头部件之间的空气逃出的逃气通道，避免了因烘烤时空气热胀冷缩所产生的压力对多群组镜头产生影响，从而降低了镜头模组的烘烤变异。
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，本申请中所涉及的保护范围，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技术构思的情况下，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 (63)

  1. 一种可成像光学器件制造方法，其特征在于，所述方法包括：
    将至少两个镜头部件沿光轴预定位，使得所述至少两个镜头部件可成像，其中，在相邻两个镜头部件之间的不同位置处具有第一结构间隙和第二结构间隙；
    通过主动校准调整已预定位的至少两个镜头部件的相对位置；
    在所述第一结构间隙布设第一粘合剂并在所述第二结构间隙布设第二粘合剂；以及
    依次先后固化所述第一粘合剂和所述第二粘合剂。
  2. 根据权利要求1所述的可成像光学器件制造方法，其特征在于，所述可成像光学器件是：光学镜头或者摄像模组。
  3. 根据权利要求2所述的可成像光学器件制造方法，其特征在于，每个所述镜头部件包括至少一片镜片，所述方法还包括：对镜筒进行塑形以使其包裹所述镜片的上表面和下表面的至少一部分。
  4. 根据权利要求1所述的可成像光学器件制造方法，其特征在于，在将至少两个镜头部件沿光轴预定位之前，所述方法还包括：
    将所述至少两个镜头部件中的相邻两个镜头部件的、与所述第一结构间隙对应的表面塑形为背离所述光轴方向延伸并朝向所述至少两个镜头部件的外部开口。
  5. 根据权利要求1所述的可成像光学器件制造方法，其特征在于，在将至少两个镜头部件沿光轴预定位之前，所述方法还包括：
    将相邻的两个所述镜头部件的、与所述第一结构间隙对应的表面塑形为彼此契合；以及
    将相邻的两个所述镜头部件的、与所述第二结构间隙对应的表面塑形为彼此契合。
  6. 根据权利要求5所述的可成像光学器件制造方法，其特征在于，在将至少两个镜头部件沿光轴预定位之前，所述方法还包括：
    将相邻两个镜头部件的、与所述第一结构间隙和所述第二结构间隙对应的表面塑形为均垂直于所述光轴。
  7. 根据权利要求6所述的可成像光学器件制造方法，其特征在于，在将至少两个镜头部件沿光轴预定位之前，所述方法还包括：
    将相邻的两个所述镜头部件中任一镜头部件的、与所述第一结构间隙和所述第二结构间隙对应的表面塑形为在同一水平面上。
  8. 根据权利要求5所述的可成像光学器件制造方法，其特征在于，在将至少两个镜头部件沿光轴预定位之前，所述方法还包括：
    将相邻两个镜头部件的、与所述第一结构间隙对应的表面塑形为垂直于所述光轴；以及
    将相邻两个镜头部件的、与所述第二结构间隙对应的表面塑形为具有相对于所述光轴倾斜的倾斜段。
  9. 根据权利要求1所述的可成像光学器件制造方法，其特征在于，在将至少两个镜头部件沿光轴预定位之前，所述方法还包括：
    在相邻两个镜头部件中的一个镜头部件上形成连接突起部；以及
    在所述相邻两个镜头部件中的另一个镜头部件上形成契合且接纳所述连接突起部的连接凹部。
  10. 根据权利要求9所述的可成像光学器件制造方法，其特征在于，形成连接突起部包括：
    将所述连接突起部形成为在平行于所述光轴的截面上具有梯形、三角形、矩形、半圆形和双三角形中的至少一种形状。
  11. 根据权利要求9所述的可成像光学器件制造方法，其特征在 于，形成连接突起部包括：
    将所述连接突起部形成为在垂直于所述光轴的截面上具有连续的形状。
  12. 根据权利要求9所述的可成像光学器件制造方法，其特征在于，形成连接突起部包括：
    将所述连接突起部形成为在垂直于所述光轴的截面上具有分立的形状。
  13. 根据权利要求12所述的可成像光学器件制造方法，其特征在于，形成连接突起部包括：
    围绕所述光轴等间距地形成所述连接突起部。
  14. 根据权利要求1所述的可成像光学器件制造方法，其特征在于，将所述至少两个镜头部件沿光轴预定位包括：
    将所述至少两个镜头部件沿光轴彼此靠近，使得所述第一结构间隙和所述第二结构间隙的宽度相同。
  15. 根据权利要求1所述的可成像光学器件制造方法，其特征在于，将所述至少两个镜头部件沿光轴预定位包括：
    将所述至少两个镜头部件沿光轴彼此靠近，使得所述第一结构间隙和所述第二结构间隙的宽度的范围是30至100微米。
  16. 根据权利要求1所述的可成像光学器件制造方法，其特征在于：
    所述第一粘合剂是光固化粘合剂或光热固化粘合剂；以及
    所述第一结构间隙具有能够接收光的开口。
  17. 根据权利要求1所述的可成像光学器件制造方法，其特征在于：
    所述第二粘合剂是热固化粘合剂。
  18. 根据权利要求1所述的可成像光学器件制造方法，其特征在于：
    所述第二粘合剂是光热固化粘合剂；以及
    所述第二结构间隙具有开口，且所述开口处设置有一倾斜角度。
  19. 根据权利要求16所述的可成像光学器件制造方法，其特征在于，固化所述第一粘合剂包括：利用所述光固化粘合剂或所述光热固化粘合剂所敏感的光照射所述第一粘合剂。
  20. 根据权利要求17或18所述的可成像光学器件制造方法，其特征在于，固化所述第二粘合剂包括：加热所述第二粘合剂。
  21. 一种可成像光学器件，其特征在于，所述可成像光学器件包括：
    至少两个镜头部件，所述至少两个镜头部件中的每个镜头部件均包括至少一片镜片且沿光轴方向依次定位，并且在相邻两个镜头部件之间的不同位置处具有第一结构间隙和第二结构间隙；
    第一粘合剂，所述第一粘合剂布置在所述第一结构间隙中；以及
    第二粘合剂，所述第二粘合剂布置在所述第二结构间隙中，
    其中，所述第一粘合剂和所述第二粘合剂的布置位置和材料适于使所述第一粘合剂和所述第二粘合剂在不同的时间被先后固化。
  22. 根据权利要求21所述的可成像光学器件，其特征在于，所述至少两个镜头部件中的至少一个镜头部件还包括镜筒。
  23. 根据权利要求22所述的可成像光学器件，其特征在于：
    所述镜筒包裹所述镜片的上表面和下表面的至少一部分；以及
    所述第一结构间隙或所述第二结构间隙沿光轴方向上与所述镜筒 包裹的至少一部分具有重叠区域。
  24. 根据权利要求21所述的可成像光学器件，其特征在于：
    相邻两个镜头部件的、与所述第一结构间隙对应的表面背离所述光轴方向延伸并朝向所述至少两个镜头部件的外部开口。
  25. 根据权利要求21所述的可成像光学器件，其特征在于：
    相邻两个镜头部件的、与所述第一结构间隙对应的表面彼此契合；以及
    相邻两个镜头部件的、与所述第二结构间隙对应的表面彼此契合。
  26. 根据权利要求25所述的可成像光学器件，其特征在于，相邻两个镜头部件的、与所述第一结构间隙和所述第二结构间隙对应的表面均垂直于所述光轴。
  27. 根据权利要求26所述的可成像光学器件，其特征在于，相邻两个镜头部件中任一镜头部件的、与所述第一结构间隙和所述第二结构间隙对应的表面在同一水平面上。
  28. 根据权利要求26所述的可成像光学器件，其特征在于：
    相邻两个镜头部件的、与所述第一结构间隙对应的表面垂直于所述光轴；以及
    相邻两个镜头部件的、与所述第二结构间隙对应的表面具有相对于所述光轴倾斜的倾斜段。
  29. 根据权利要求21所述的可成像光学器件，其特征在于：
    相邻两个镜头部件中的一个镜头部件包括朝向另一个镜头部件突出的连接突起部；以及
    所述相邻两个镜头部件中的所述另一个镜头部件包括契合且接纳所述连接突起部的连接凹部。
  30. 根据权利要求29所述的可成像光学器件，其特征在于，所述连接突起部在平行于所述光轴的截面上具有梯形、三角形、矩形、半圆形和双三角形中的至少一种形状。
  31. 根据权利要求29所述的可成像光学器件，其特征在于，所述连接突起部在垂直于所述光轴的截面上具有连续的形状。
  32. 根据权利要求29所述的可成像光学器件，其特征在于，所述连接突起部在垂直于所述光轴的截面上具有分立的形状。
  33. 根据权利要求32所述的可成像光学器件，其特征在于，所述连接突起部围绕所述光轴等间距地布置。
  34. 根据权利要求21所述的可成像光学器件，其特征在于，所述第一结构间隙和所述第二结构间隙的宽度相同。
  35. 根据权利要求21所述的可成像光学器件，其特征在于，所述第一结构间隙和所述第二结构间隙的宽度不相同。
  36. 根据权利要求21所述的可成像光学器件，其特征在于，所述第一结构间隙和所述第二结构间隙的宽度的范围是30-100微米。
  37. 根据权利要求21所述的可成像光学器件，其特征在于：
    所述第一粘合剂是光固化粘合剂或光热固化粘合剂；以及
    所述第一结构间隙具有能够接收光的开口。
  38. 根据权利要求21所述的可成像光学器件，其特征在于，所述第二粘合剂是热固化粘合剂。
  39. 根据权利要求21所述的可成像光学器件，其特征在于：
    所述第二粘合剂是光热固化粘合剂；以及
    所述第二结构间隙具有开口，所述开口处设置有一倾斜角度。
  40. 光学镜头，其特征在于，包括：
    第一子镜头，所述第一子镜头包括至少一个第一镜片和容纳所述第一镜片的第一镜筒，或者所述第一子镜头由单个第一镜片构成；
    第二子镜头，包括至少一个第二镜片和容纳所述第二镜片的第二镜筒；以及
    粘合胶，将所述第一子镜头与所述第二子镜头粘合在一起，其中，所述粘合胶、所述第一子镜头与所述第二子镜头共同形成一个腔体，
    其中，所述第一镜片、所述第一镜筒、所述第二镜片、所述第二镜筒和所述粘合胶中的至少一个的部分形成逃气通道，所述逃气通道的一端通向所述腔体并且所述逃气通道的另一端通向外界。
  41. 如权利要求40所述的光学镜头，其特征在于，所述逃气通道的通向所述腔体的一端具有相对于所述逃气通道的尺寸加大的开口。
  42. 如权利要求40所述的光学镜头，其特征在于，所述逃气通道的通向外界的一端具有相对于所述逃气通道的尺寸加大的另一开口。
  43. 如权利要求42所述的光学镜头，其特征在于，所述另一开口具有倾斜的内表面。
  44. 如权利要求40所述的光学镜头，其特征在于，所述逃气通道为：设于所述第一镜片、所述第一镜筒、所述第二镜片、所述第二镜筒中至少一项中的逃气孔。
  45. 如权利要求44所述的光学镜头，其特征在于，所述逃气通道为：在平行于由所述第一镜片和所述第二镜片组成的光学系统的光轴 的方向上或者相对于所述方向具有一定角度地设于所述第一镜筒中的逃气孔。
  46. 如权利要求44所述的光学镜头，其特征在于，所述逃气通道为：在垂直于由所述第一镜片和所述第二镜片组成的光学系统的光轴的方向上或者相对于所述方向具有一定角度地设于所述第一镜筒和/或所述第二镜筒中的逃气孔。
  47. 如权利要求44所述的光学镜头，其特征在于，所述第一镜片包括用于透过光线的有效区和位于所述有效区的外周的无效区，所述逃气通道为：在平行于由所述第一镜片和所述第二镜片组成的光学系统的光轴的方向上或者相对于所述方向具有一定角度地设于所述第一镜片的无效区中的逃气孔。
  48. 如权利要求40所述的光学镜头，其特征在于，所述逃气通道为：设置在所述第一镜筒的面对所述第二镜筒的表面处和/或设置在所述第二镜筒的面对所述第一镜筒的表面处的凹槽。
  49. 如权利要求40所述的光学镜头，其特征在于，所述逃气通道为：沿着所述第一镜筒与所述第一镜片之间的接触边界设于所述第一镜筒和/或所述第一镜片中的逃气槽。
  50. 如权利要求40所述的光学镜头，其特征在于，所述粘合胶在平面图中呈C型环的形式，从而由所述C型环的缺口形成所述逃气通道。
  51. 如权利要求50所述的光学镜头，其特征在于，所述粘合胶在平面图中呈沿径向方向彼此间隔开的多个C型环的形式。
  52. 如权利要求51所述的光学镜头，其特征在于，所述光学镜头 还包括密封最外层的所述C型环的缺口的密封物。
  53. 如权利要求51所述的光学镜头，其特征在于，多个所述C型环的缺口在圆周方向上尽可能远地间隔开。
  54. 如权利要求50所述的光学镜头，其特征在于，所述逃气通道还包括与所述C型环的缺口连通的逃气槽，所述逃气槽沿着所述第一子镜头与所述第二子镜头之间的接触部位设于所述第一镜筒和/或所述第二镜筒中。
  55. 如权利要求40所述的光学镜头，其特征在于，所述光学镜头还包括密封所述逃气通道的通向外界的一端的密封物。
  56. 如权利要求40～55中任意一项所述的光学镜头，其特征在于，所述逃气通道在平面图中呈直线形式、折线形式和曲线形式中的至少一种形式。
  57. 摄像模组，其特征在于，包括如权利要求40～56中任意一项所述的光学镜头。
  58. 一种光学镜头的组装方法，其特征在于，所述组装方法包括：
    将至少一个第一镜片容纳和安装于第一镜筒中，从而形成第一子镜头；
    将至少一个第二镜片容纳和安装于第二镜筒中，从而形成第二子镜头；以及
    利用粘合胶将所述第一子镜头与所述第二子镜头粘合在一起，其中，所述粘合胶、所述第一子镜头与所述第二子镜头共同形成一个腔体，
    其中，所述组装方法还包括：在粘合所述第一子镜头与所述第二子镜头的过程中，利用由设于所述第一镜片、所述第一镜筒、所述第 二镜片、所述第二镜筒和所述粘合胶中的至少一个中的通孔和/或缺口形成逃气通道，使所述腔体中的空气与外界连通，其中所述逃气通道的一端通向所述腔体并且所述逃气通道的另一端通向外界。
  59. 如权利要求58所述的组装方法，其特征在于，所述组装方法还包括：在所述光学镜头组装完成之后，密封所述逃气通道的通向外界的一端。
  60. 如权利要求59所述的组装方法，其特征在于，利用所述粘合胶将所述第一子镜头与所述第二子镜头粘合在一起包括：
    将所述粘合胶点胶于所述第一镜筒和所述第二镜筒上，使得所述粘合胶在平面图中呈C型环的形式，从而由所述C型环的缺口形成所述逃气通道。
  61. 如权利要求60所述的组装方法，其特征在于，点胶所述粘合胶包括：
    将所述粘合胶点胶多次，使得所述粘合胶在平面图中呈沿径向方向彼此间隔开的多个C型环的形式。
  62. 如权利要求61所述的组装方法，其特征在于，所述组装方法还包括：在所述光学镜头组装完成之后，密封最外层的所述C型环的缺口。
  63. 一种光学镜头的组装方法，其特征在于，所述光学镜头包括第一镜片和至少一个第二镜片，所述组装方法包括：
    将所述至少一个第二镜片容纳和安装于第二镜筒中，从而形成第二子镜头；以及
    利用粘合胶将所述第一镜片与所述第二子镜头粘合在一起，其中，所述粘合胶、与所述第二子镜头共同形成一个腔体，
    其中，所述组装方法还包括：在粘合所述第一镜片与所述第二子 镜头的过程中，利用由设于所述第一镜片、所述第二镜片、所述第二镜筒和所述粘合胶中的至少一个中的通孔和/或缺口形成逃气通道，使所述腔体中的空气与外界连通，其中所述逃气通道的一端通向所述腔体并且所述逃气通道的另一端通向外界。
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