Split lens and camera module with split lens

Abstract

The application provides a split lens and a camera module with the split lens. The split lens comprises a first lens component, a second lens component, a buffer layer and an adhesive layer. The buffer layer is arranged on the first lens component and between the first lens component and the second lens component. The first lens component is bonded to the light-in side of the second lens component by the adhesive layer. The buffer layer absorbs the stress generated by the adhesive layer due to temperature change.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of camera modules, and in particular to a split lens and a camera module with the split lens. BACKGROUND

[0002] With the popularity of mobile electronic devices, the related technology of camera modules (used to obtain images, such as videos or images) applied to mobile electronic devices has developed rapidly and made great progress. In recent years, the level of technology has shown a trend of accelerating development, especially in the field of electronic technology, which is developing at a speed that makes people speechless. The competition of camera modules is becoming increasingly fierce, and the structure and performance of camera modules have been greatly developed. Whether in function or size, it is constantly developing in the direction people imagine, with high functional integration, high compactness and miniaturization.

[0003] The split lens needs to assemble multiple lens components, and compared with the integrated solution, sometimes the reliability does not meet the requirements, so the split lens solution sometimes needs to improve the reliability of the split lens. Sometimes the split lens will fall off easily after the split lens reliability test due to unreasonable lens structure design, performance degradation, etc.

[0004] In existing mobile phone camera modules, glass lenses have better resolution than plastic lenses, and under the same resolution conditions, glass lenses are smaller in height. In order to reduce the height of the camera module, glass lenses are usually preferred. However, due to the high melting point of glass lenses, existing processes cannot use high-temperature liquids to flow into the mold like injection molding. It is worth mentioning that glass lenses have high light transmittance and large refractive index, and compared with plastic lenses, glass lenses can reduce the height of the overall lens, so lenses with glass lenses have certain advantages and can meet the needs of consumers. However, all-glass lenses have a large mass due to the density of glass, and for split lenses, the upper group lens can be made of glass to reduce the height of the overall lens.

[0005] Therefore, glass lenses use high-temperature hot pressing, which requires increasing the temperature to soften the glass blank. The shape of the glass blank is generally a spherical shape, and the glass needs to be maintained near the TG point during hot pressing, but the pressure cannot be too large. Excessive pressure can affect the glass blank to break. The structure area of the glass lens also needs to be hot pressed, so the light-sensitive invalid area of the glass lens is relatively narrow. In addition, due to the difference in CTE between glass lenses and plastic, glass lenses are prone to breakage in existing camera modules. SUMMARY

[0006] One of the major advantages of the present application is to provide a split lens and a camera module with the split lens, wherein the split lens is highly compact, which is conducive to the miniaturization of the camera module.

[0007] Another advantage of the present application is to provide a split lens and a camera module with the split lens, wherein the split lens comprises a first lens component and a second lens component, wherein the first lens component and the second lens component are fixedly connected by bonding, and further comprises a buffer layer between the first lens component and the second lens component, which is used to absorb the stress generated by the deformation of the glue, thereby reducing the risk of lens breakage.

[0008] Another advantage of the present application is to provide a split lens and a camera module with the split lens, wherein the first lens component of the split lens further comprises a first lens, which is a glass lens, thereby improving the resolution of the camera module.

[0009] Another advantage of the present application is to provide a split lens and a camera module with the split lens, wherein the buffer layer is arranged between the first lens component and the second lens component, which is conducive to improving the structural strength of the camera module.

[0010] Another advantage of the present application is to provide a split lens and a camera module with the split lens, wherein the buffer layer is arranged in a glue layer, which prevents glue overflow and improves the bonding performance.

[0011] Another advantage of the present application is to provide a split lens and a camera module with the split lens, wherein the split lens is conducive to reducing the overall height of the camera module, thereby facilitating the miniaturization of the camera module while maintaining the overall resolution of the camera module.

[0012] Another advantage of the present application is to provide a split lens and a camera module with the split lens, wherein the buffer layer is ink, which improves the lens breakage problem caused by the glue solidification extrusion of the first lens, and improves the structural strength of the camera module.

[0013] According to one aspect of the present application, a split lens of the present application can achieve the foregoing and other objects and advantages, comprising:

[0014] a first lens component;

[0015] a second lens component; and

[0016] a buffer layer and an adhesive layer, wherein the buffer layer is disposed between the first lens component and the second lens component, and the first lens component is bonded to the second lens component on an entrance light side by the adhesive layer, and the buffer layer absorbs stress of the adhesive layer caused by temperature change.

[0017] According to one embodiment of the present application, the first lens component includes a first lens, wherein the first lens is a glass lens, the first lens has an object side and an image side, and the buffer layer is formed on the image side of the first lens.

[0018] According to one embodiment of the present application, the first lens further includes an optical transparent region and an optical structure region integrally extended outward from the optical transparent region, wherein the optical structure region is supported on the periphery of the optical transparent region, and the buffer layer is formed on the image side of the optical structure region.

[0019] According to one embodiment of the present application, the buffer layer is made of ink, the CTE value of the buffer layer is less than the CTE value of the glass material, and the elastic modulus of the buffer layer is less than the elastic modulus of the glass material.

[0020] According to one embodiment of the present application, the first lens further has a buffer groove, wherein the buffer groove is formed on the optical structure region of the first lens, and the buffer layer is disposed in the buffer groove of the first lens.

[0021] According to one embodiment of the present application, the first lens further has at least one groove, wherein the at least one groove is formed on the optical structure region of the first lens, and the material forming the buffer layer is filled in the groove of the first lens.

[0022] According to one embodiment of the present application, the first lens component further includes a lens hood, wherein the lens hood is located above the first lens, the lens hood is fixed to the second lens component, and the lens hood protects the first lens.

[0023] According to one embodiment of the present application, the lens hood further has a light condensing surface, wherein the light condensing surface extends from the image side to the object side in a way of being inclined upward and outward, so as to increase the amount of light entering.

[0024] According to one embodiment of the present application, the lens hood further includes a support portion and a cover edge extending from the support portion to the direction of the optical axis, the cover edge covers the optical structure region of the first lens, and the support portion of the lens hood is bonded to the second lens component.

[0025] According to an embodiment of the present application, the buffer layer includes an upper buffer unit, a lower buffer unit, and a side buffer unit, wherein the upper buffer unit is formed on the object side of the optical structure region of the first lens, the lower buffer unit is formed on the image side of the optical structure region of the first lens, and the side buffer unit is formed on a ring side of the optical structure region of the first lens.

[0026] According to an embodiment of the present application, the lens black material includes 20% or 30% glass fiber.

[0027] According to another aspect of the present application, the present application further provides a camera module, including:

[0028] a light sensing component; and

[0029] a lens assembly, wherein the lens assembly is held in a light sensing path of the light sensing component, wherein the lens assembly further includes a lens carrier and at least one split lens, the lens carrier is arranged on the light sensing component, and the split lens is carried on the lens carrier, wherein the split lens includes:

[0030] a first lens part;

[0031] a second lens part; and

[0032] a buffer layer and an adhesive layer, wherein the buffer layer is arranged on the first lens part between the first lens part and the second lens part, the first lens part is bonded to an object side of the second lens part by the adhesive layer, and the buffer layer absorbs stress of the adhesive layer due to temperature change.

[0033] According to an embodiment of the present application, the first lens part includes a first lens, wherein the first lens is a glass lens, the first lens has an object side and an image side, and the buffer layer is formed on the image side of the first lens.

[0034] According to an embodiment of the present application, the first lens further includes an optical transparent region and an optical structure region integrally extended outward from the optical transparent region, wherein the optical structure region is supported on the periphery of the optical transparent region, and the buffer layer is formed on the image side of the optical structure region.

[0035] According to an embodiment of the present application, the material of the buffer layer is ink, the CTE value of the buffer layer is less than the CTE value of glass material, and the elastic modulus of the buffer layer is less than the elastic modulus of glass material.

[0036] According to one embodiment of the present application, the first lens further comprises a buffer groove, wherein the buffer groove is formed in the optical structure area of the first lens, and the buffer layer is disposed in the buffer groove of the first lens.

[0037] According to one embodiment of the present application, the first lens further comprises at least one groove, wherein the at least one groove is formed in the optical structure area of the first lens, and the material forming the buffer layer fills the groove of the first lens.

[0038] According to one embodiment of the present application, the first lens further comprises a lens hood, wherein the lens hood is located above the first lens, and the lens hood is fixed to the second lens component, thereby protecting the first lens by the lens hood.

[0039] According to one embodiment of the present application, the lens hood further comprises a light collecting surface, wherein the light collecting surface extends upward and outward from the image side to the object side, thereby increasing the amount of light.

[0040] According to one embodiment of the present application, the lens hood further comprises a support portion and a cover portion extending from the support portion toward the optical axis, wherein the cover portion covers the optical structure area of the first lens, and the support portion of the lens hood is bonded to the second lens component.

[0041] According to one embodiment of the present application, the buffer layer comprises an upper buffer unit, a lower buffer unit, and a side buffer unit, wherein the upper buffer unit is formed on the object side of the optical structure area of the first lens, the lower buffer unit is formed on the image side of the optical structure area of the first lens, and the side buffer unit is formed on a ring side of the optical structure area of the first lens.

[0042] According to one embodiment of the present application, the material of the lens hood comprises 20% or 30% glass fiber.

[0043] The further objects and advantages of the present application will be more fully understood from the following description and drawings.

[0044] The objects, features and advantages of the present application will be better understood from the following detailed description of the preferred embodiments of the application taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is a schematic diagram of a split lens according to a first preferred embodiment of the present application.

[0046] Figure 2is a stress analysis schematic diagram of the split lens according to the first preferred embodiment of the present application.

[0047] Figure 3 is a structure schematic diagram of a first lens of the split lens according to the first preferred embodiment of the present application.

[0048] Figure 4 is a size schematic diagram of the split lens according to the first preferred embodiment of the present application.

[0049] Figure 5 is a whole schematic diagram of another alternative embodiment of the split lens according to the first preferred embodiment of the present application.

[0050] Figure 6 is a whole schematic diagram of another alternative embodiment of the split lens according to the first preferred embodiment of the present application.

[0051] Figure 7 is a whole structure schematic diagram of a split lens according to a second preferred embodiment of the present application.

[0052] Figure 8 is a structure schematic diagram of a camera module according to a preferred embodiment of the present application. DETAILED DESCRIPTION

[0053] The following description is presented to enable any person skilled in the art to practice the application as claimed. The preferred embodiments disclosed herein are only examples of the application and alternative embodiments, modifications, improvements, equivalents, and the like can be made thereto without departing from the spirit and scope of the application as set forth in the following claims.

[0054] It should be understood by those skilled in the art that, in the disclosure of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0055] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0056] The application will be described with reference to the accompanying drawings, in which Figures 1 to 4 As shown in the drawings, a split lens according to a first preferred embodiment of the present application is illustrated in the following description. The split lens includes a first lens component 10, a second lens component 20, and a buffer layer 30 and an adhesive layer 40, wherein the first lens component 10 is located at the light-incoming side of the second lens component 20, the buffer layer 30 is disposed on the first lens component 10, the adhesive layer 40 is formed between the first lens component 10 and the second lens component 20, the first lens component 10 and the second lens component 20 are bonded and fixed by the adhesive layer 40, and the buffer layer 30 can absorb the stress of the adhesive layer 40 due to temperature change.

[0057] In the preferred embodiment of the present application, the first lens component 10 includes a first lens 11, wherein the first lens 11 is a bare lens, and the first lens 11 is a glass lens. The buffer layer 30 is disposed on the lower side of the first lens 11, and is fixed to the upper end of the second lens component 20 by the adhesive layer 40. The first lens 11 has an object side 101 and an image side 102, wherein external light rays are incident on the first lens 11 through the object side 101 of the first lens 11, and are emitted outward to the second lens component 20 through the image side 102 of the first lens 11. In the preferred embodiment of the present application, the buffer layer 30 is disposed on the image side 102 of the first lens 11.

[0058] The first lens 11 further includes an optical transparent region 111 and an optical structure region 112 extending outwardly from the optical transparent region 111, and light rays reach the second lens component 20 through the optical transparent region 111 of the first lens 11, wherein the optical structure region 112 is supported on the outer periphery of the optical transparent region 111. In other words, the second lens component 20 is supported below the optical structure region 112 of the first lens 11 by the adhesive layer 40 and the buffer layer 30. That is, the buffer layer 30 is disposed on the image side 102 of the optical structure region 112 of the first lens 11, the buffer layer 30 does not affect the transmission of light rays by the optical transparent region 111, and prevents external light rays from entering the optical transparent region 111 through the optical structure region 112. It is worth mentioning that the adhesive layer 40 is formed at a position corresponding to the optical structure region 112 of the first lens 11, and the adhesive layer 40 does not affect the optical transparent region 111.

[0059] Accordingly, the adhesive layer 40 and the buffer layer 30 are arranged on the optical structure area 112 of the first lens 11, and the adhesive layer 40 and the buffer layer 30 correspond to the second lens component 20. The object side 101 of the first lens 11 protrudes upward to facilitate converging light rays. In detail, the optical light transmission area 111 of the first lens 11 further comprises a protruding portion 1111, wherein the object side 101 of the protruding portion 1111 protrudes outward toward the object side to form a circular arc or a barrel shape, and the protruding portion 1111 of the optical light transmission area 111 is used for converging light rays and can increase the amount of light entering to reach the chip imaging after the light rays pass through.

[0060] Preferably, in the preferred embodiment of the present application, the diameter of the optical light transmission area 111 of the first lens 11 is 3.48 mm, and the width of the optical structure area 112 of the first lens is 0.32 mm; wherein the diameter of the first lens is 4.6 mm.

[0061] It is worth mentioning that, in a preferred embodiment of the present application, the image side 102 of the optical light transmission area 111 of the first lens 11 is a concave surface protruding toward the object side, wherein the image side 102 of the optical light transmission area 111 of the first lens 11 is a concave arc structure, which is beneficial to the light rays diverging through the image side 102 of the optical light transmission area 111. It can be understood that, in the preferred embodiment of the present application, the shape of the image side 102 of the optical light transmission area 111 of the first lens 11 is only exemplary and not limiting.

[0062] The second lens component 20 comprises a lens barrel 21 and a second lens group 22 arranged on the lens barrel 21, and the second lens group 22 further comprises at least one lens unit 221. Preferably, in the preferred embodiment of the present application, each lens unit 221 of the second lens group 22 is a resin lens. The second lens group 22 is supported and protected by the lens barrel 21 and maintains a certain spacing, and the first lens component 10 is bonded to the lens barrel 21 of the second lens component 20 by the adhesive layer 40, thereby supporting and fixing the first lens component 10 by the lens barrel 21. Preferably, the optical effective area diameter of the uppermost lens unit 221 of the second lens group 22 of the second lens component 20 is 3.4 mm.

[0063] Preferably, in the preferred embodiment of the present application, the glue forming the adhesive layer 40 is applied to an upper surface of the lens barrel 21 of the second lens component 20, and the buffer layer 30 and the lens barrel 21 of the second lens component 20 are bonded by the glue to form the adhesive layer 40 between the buffer layer 30 and the lens barrel 21.

[0064] It is worth mentioning that in this preferred embodiment of the present application, the buffer layer 30 is formed on the image side 102 of the optical structure area 112 of the first lens 11, and the buffer layer 30 serves as a buffer between the adhesive layer 40 and the first lens 11, thereby reducing the stress change caused by temperature change.

[0065] As mentioned above, in this preferred embodiment of the present application, the first lens 11 is a glass lens, and those skilled in the art can understand that, under the same refractive index condition, the thickness of a glass lens is smaller than that of a resin lens, and the use of a glass lens can better reduce the height of the camera module. Compared with a resin lens, a pure glass lens has smaller material deformation problem and is more stable under the influence of temperature rise, and has better optical resolution. However, due to the high melting point of the glass lens, the existing process cannot use the way of flowing high-temperature liquid into the mold like injection molding. Therefore, it is necessary to use the way of high-temperature hot pressing of the mold for forming.

[0066] Using the way of high-temperature hot pressing, it is necessary to raise the temperature to soften the glass blank, and the shape of the glass blank is generally a spherical shape. During hot pressing, the glass needs to be maintained near the TG point, but the pressure cannot be too large, and too large pressure will affect the glass blank to break. Since the structure area of the glass lens also needs to be hot pressed, the optical structure area is small in actual production process, so the bonding area of the first lens 11 and the lens barrel 21 in the second lens component 20 is small. At the same time, in order to ensure the yield of the camera module, under the premise that the bonding strength is sufficient and the bonding area is small, more bonding material is needed, and the bonding layer is thicker.

[0067] In the prior art, when the glass lens is connected with the lens barrel by glue, since the coefficients of thermal expansion (CTE for short) of the glass and the glue material are different, when the environmental temperature changes greatly (such as the temperature needs to be raised to 150℃ or more during the molding of the molding material, and the environmental temperature also changes many times during the subsequent manufacturing process) during the manufacturing of the existing camera module. The expansion degree and expansion speed of the glass lens and the glue material are different, and the CTE of the glue material and the CTE of the first lens are very different. The different expansion degrees of the glue and the glass lens will cause stress between the glue and the glass lens, so the glass lens is easily affected by the deformation of the glue material, thereby causing the risk of glass lens breakage.

[0068] Accordingly, in the preferred embodiment of the present application, the buffer layer 30 is formed between the adhesive layer 40 and the first lens 11, and the buffer layer 30 absorbs the deformation of the adhesive layer 40 due to temperature changes, thereby relieving the stress between the adhesive layer 40 and the first lens 11, and reducing the risk of breakage of the first lens 11.

[0069] In the preferred embodiment of the present application, the CTE value of the buffer layer 30 is less than the CTE value of the glass material, and the elastic modulus of the buffer layer 30 is less than the elastic modulus of the glass material. When the adhesive layer 40 deforms due to changes in environmental temperature, the buffer layer 30 can absorb the stress generated by the deformation of the adhesive layer 40, so that the force cannot be transmitted to the first lens, thereby protecting the first lens 11.

[0070] The buffer layer 30 is formed at the position of the image side 102 of the optical structure area 112 of the first lens 11, and the adhesive layer 40 bonds the buffer layer 30 to the upper end of the lens barrel 21 of the second lens component 20. Preferably, in the preferred embodiment of the present application, the buffer layer 30 is an ink material, wherein the ink material forming the buffer layer 30 is coated at the position of the image side 102 of the optical structure area 112 of the first lens 11, and the buffer layer is formed after curing.

[0071] More preferably, the thickness of the buffer layer 30 is 2-10um, the CTE of the ink material is less than the CTE of the glass material, and the elastic modulus of the ink material is less than the elastic modulus of the glass material (small elastic modulus, good flexibility, easy to deform; large elastic modulus, not easy to deform). Due to the large deformation of the glue with a large CTE, when the glue deforms due to changes in environmental temperature, the buffer layer 30 can absorb the stress generated by the deformation of the glue, so that the force cannot be transmitted to the first lens, thereby protecting the first lens 11.

[0072] Preferably, in the preferred embodiment of the present application, the height dimension of the first lens 11 is 1.06mm, and the overall height of the split lens is 6.05mm.

[0073] The preferred embodiment of the present application is described with reference to the drawings Figure 5As shown, another alternative embodiment of a split lens according to the first preferred embodiment of the present application is illustrated in the following description. Different from the first preferred embodiment, the first lens element 10 of the split lens has the first lens 11. In this preferred embodiment of the present application, the first lens 11 is further provided with a buffer groove 110, wherein the buffer groove 110 is formed in the optical structure area 112 of the first lens 11, and the buffer layer 30 is disposed in the buffer groove 110 of the first lens 11.

[0074] The buffer groove 110 of the first lens 11 is recessed from the image side 102 of the optical structure area 112 of the first lens 11 toward the object side 101, and the ink material forming the buffer layer 30 is filled in the buffer groove 110 of the first lens 11. The buffer groove 110 of the first lens 11 provides accommodation for the material forming the buffer layer 30, and the buffer groove 110 has an outer side opening, wherein the outer side opening is formed in the outer side of the first lens 11. It can be understood that the buffer layer 30 formed in the buffer groove 110 of the first lens 11 can reduce the increase of the height of the camera module due to the increase of the buffer layer 30, while ensuring that the thickness of the buffer layer 30 is sufficient to effectively absorb the stress generated by the deformation of the glue layer, and at the same time, it is beneficial to reduce the height of the camera module and facilitate the miniaturization of the camera module.

[0075] Referring to the drawings of the present application Figure 6 As shown, another alternative embodiment of a split lens according to the first preferred embodiment of the present application is illustrated in the following description. Different from the first preferred embodiment, the first lens element 10 of the split lens has the first lens 11. In this preferred embodiment of the present application, the first lens 11 is further provided with at least one groove 113, wherein the at least one groove 113 is formed in the optical structure area 112 of the first lens 11, and the material forming the buffer layer 30 is filled in the groove 113 of the first lens 11, which accommodates the material and increases the connection strength between the buffer layer 30 and the first lens 11.

[0076] Preferably, the groove 113 of the first lens 11 is formed in the image side 102 of the optical structure area 112 of the first lens 11, wherein the opening of the groove 113 is flush with the image side 102 of the optical structure area 112 of the first lens 11.

[0077] Referring to the drawings of the present application Figure 7As shown, a lens assembly according to a second preferred embodiment of the present application is illustrated in the following description. Different from the first preferred embodiment described above, the first lens component 10A further comprises a lens hood 13A, which is located above the first lens 11 and fixed to the second lens component 20, for protecting the first lens 11 by the lens hood 13A.

[0078] In detail, the lens hood 13A has a light collecting passage 130A, which is formed on the inner side of the lens hood 13A for collecting light rays into the first lens 11. The lens hood 13A covers the upper end of the first lens 11 and further fixes the first lens 11 by the lens hood 13A. It is worth mentioning that, in this preferred embodiment of the present application, the lens hood 13A is an optical lens hood material.

[0079] The lens hood 13A further has a light collecting surface 131A, which is formed on the inner side of the lens hood 13A and surrounds the light collecting passage 130A of the lens hood 13A. The light collecting surface 131A of the lens hood 13A is a ring-shaped inclined surface, which extends upward and outward from the image side to the object side, i.e. the light collecting passage 130A of the lens hood 13A is an open passage, so as to increase the amount of light.

[0080] The lens hood 13A further comprises a support portion 132A and a cover edge 133A extending from the support portion 132A to the optical axis direction, wherein the inner side of the support portion 132A and the lower side of the cover edge 133A of the lens hood 13A form a cover space 134A, in which the optical structure area 112 of the first lens 11 is at least partially held by the lens hood 13A. That is, in this preferred embodiment of the present application, the cover edge 133A of the lens hood 13A covers the optical structure area 112 of the first lens 11 and does not affect the optical transparent area 111. The support portion 132A of the lens hood 13A integrally extends downward from the outer side of the cover edge 133A and is bonded to the lens barrel 21 of the second lens component 20.

[0081] The skilled in the art can understand that the lens black object is usually a molded material, and the CTE of the plastic material is much smaller than that of the glass material. Therefore, during the assembly of the lens black object and the subsequent manufacturing process of the camera module, due to the change of the ambient temperature, the deformation of the black object material is large, and stress is easily generated, which acts on the glass lens and causes damage to the glass lens.

[0082] Another difference between the above-mentioned first preferred embodiment and the present embodiment is a buffer layer 30A of the split lens. The buffer layer 30A covers the outer periphery of the optical structure area 112A of the first lens 11. In detail, the buffer layer 30A includes an upper buffer unit 31A, a lower buffer unit 32A, and a side buffer unit 33A. The upper buffer unit 31A, the lower buffer unit 32A, and the side buffer unit 33A of the buffer layer 30A absorb stress generated by temperature changes, thereby protecting the first lens 11 inside.

[0083] The upper buffer unit 31A is formed on the object side 101 of the optical structure area 112 of the first lens 11, and is located between the optical structure area 112 of the first lens 11 and the cover surface 133A of the lens black object 13A. The upper buffer unit 31A absorbs stress generated by the lens black object 13A during the manufacturing and assembly process and temperature changes. The lower buffer unit 32A is formed on the image side 102 of the optical structure area 112 of the first lens 11, and is located between the optical structure area 112 of the first lens 11 and the adhesive layer 40. The lower buffer unit 32A absorbs stress generated by the glue when the temperature changes. The side buffer unit 33A is formed on a ring side 103 of the optical structure area 112 of the first lens 11, and is located between the optical structure area 112 of the first lens 11 and the lens black object 13A. The side buffer unit 33A absorbs stress generated by the lens black object 13A during the manufacturing and assembly process and temperature changes.

[0084] It is worth mentioning that the buffer unit 30A is formed of ink material, which is coated on the object side 101, the image side 102, and the ring side 103 of the optical structure area 112 of the first lens 11, and forms the buffer unit 30A outside the optical structure area 112.

[0085] It is worth mentioning that in the preferred embodiment of the present application, the buffer layer 30A can more effectively protect the first lens 11 inside the lens black object 13A, and improve the structural strength of the camera module.

[0086] Preferably, in this preferred embodiment of the present application, the lens black object 13A has 20% or 30% glass fiber in the material thereof, so that the CTE of the material of the lens black object 13A is close to the CTE of the glass lens material of the first lens 11, and the stress generated by the deformation of the material of the lens black object 13A can also be reduced to act on the glass lens.

[0087] The application will be described in greater detail with reference to the accompanying drawings, in which Figure 8 As shown in the accompanying drawings, the camera module with the split lens according to any of the preferred embodiments of the present application is illustrated in the following description. The camera module includes a photosensitive assembly 100 and a lens assembly 200 held in the photosensitive path of the photosensitive assembly 100. The photosensitive assembly 100 further includes a molded body 110 and a photosensitive chip 120, wherein the molded body 110 covers electronic components (MOB), and the molded body 110 covers part of the photosensitive area (MOC) of the photosensitive chip 120. The lens assembly 200 is attached to the upper end of the photosensitive assembly 100 by an adhesive to be held in the photosensitive path of the photosensitive assembly 100.

[0088] The lens assembly 200 further includes a lens carrier 210 and at least one split lens 220, wherein the split lens is the same as the structure and function of the split lens in the above preferred embodiments, the lens carrier 210 is mounted on the photosensitive assembly 100 (for example, the lens carrier 210 is attached to the upper end of the photosensitive assembly 100 by an adhesive), and the split lens 220 is carried in the lens carrier 210. It can be understood that the lens carrier 210 in the camera module can be implemented as a lens holder, the camera module is implemented as a fixed focus camera module, and the relative positional relationship between the split lens 220 and the photosensitive assembly 100 remains constant.

[0089] Alternatively, in other examples of the present application, the camera module can also be implemented as other types of camera modules, for example, the camera module can be implemented as a zoom camera module. Accordingly, the lens carrier 210 is implemented as a driving element, which can carry and drive the split lens 220 to move along the photosensitive path to change the relative positional relationship between the split lens 220 and the photosensitive assembly 100.

[0090] Optionally, in other examples of the present application, the camera module can also be implemented as an anti-shake camera module, i.e., the lens carrier 210 is implemented as an anti-shake motor to realize the anti-shake function through the anti-shake motor. The camera module can also include a prism and other components to form a periscope camera module. The photosensitive assembly according to the embodiments of the present application includes a circuit board assembly and a photosensitive chip electrically connected to the circuit board assembly, wherein the photosensitive chip 120 is the photosensitive part of the photosensitive assembly 100, used to receive imaging light from the outside world and perform imaging.

[0091] It should be understood by those skilled in the art that the above description and the embodiments of the present application shown in the drawings are only examples and do not limit the present application. The purpose of the present application has been fully and effectively achieved. The function and structural principle of the present application has been shown and explained in the embodiments, and the embodiments of the present application can be any modification or modification without departing from the principle.

Claims

1. A split-type lens, characterized in that, include: A first lens component, wherein the first lens element of the first lens component is a glass lens; A second lens component; as well as A buffer layer and an adhesive layer are provided, wherein the buffer layer is disposed on a first lens component, located between the first lens component and a second lens component, the first lens component is bonded to a light-incident side of the second lens component by the adhesive layer, the buffer layer absorbs the stress generated by temperature changes in the adhesive layer, wherein the material of the buffer layer is ink, the CTE value of the buffer layer is less than the CTE value of the glass material, and the elastic modulus of the buffer layer is less than the elastic modulus of the glass material, wherein the first lens has an object side and an image side, the buffer layer is formed on the image side of the first lens, the adhesive layer bonds the buffer layer and the second lens component, wherein the first lens further includes an optically transparent area and an optical structure area integrally extending outward from the optically transparent area, wherein the optical structure area is supported on the outer periphery of the optically transparent area, the buffer layer is formed on the image side of the optical structure area, wherein the ink material forming the buffer layer is coated on the image side of the optical structure area of ​​the first lens and cured to form the buffer layer, wherein the thickness of the buffer layer is 2-10 μm.

2. The split lens according to claim 1, wherein the first lens further comprises a buffer groove, wherein the buffer groove is formed in the optical structure area of ​​the first lens, and the buffer layer is disposed in the buffer groove of the first lens.

3. The split lens according to claim 1, wherein the first lens further comprises at least one groove, wherein the at least one groove is formed in the optical structure region of the first lens, and the material forming the buffer layer is filled in the groove of the first lens.

4. The split lens according to any one of claims 1 to 3, wherein the first lens component further includes a lens black, the lens black being located above the first lens element, the lens black being fixed to the second lens component, thereby protecting the first lens element.

5. The split lens according to claim 4, wherein the lens black object is further provided with a light-collecting surface, wherein the light-collecting surface extends obliquely upward and outward from the image side to the object side, so as to increase the amount of light entering.

6. The split lens according to claim 4, wherein the lens black further comprises a support portion and a cover edge extending from the support portion in the direction of the optical axis, the cover edge covering the optical structure area of ​​the first lens, and the support portion of the lens black is bonded to the second lens component.

7. The split lens according to claim 6, wherein the buffer layer comprises an upper buffer unit, a lower buffer unit, and a side buffer unit, wherein the upper buffer unit is formed on the object side of the optical structure region of the first lens, the lower buffer unit is formed on the image side of the optical structure region of the first lens, and the side buffer unit is formed on a ring side of the optical structure region of the first lens.

8. The split lens according to claim 6, wherein the material of the lens black contains 20% or 30% glass fiber.

9. A camera module, characterized in that, include: A photosensitive element; and A lens assembly, wherein the lens assembly is held in the light-sensing path of the photosensitive assembly, wherein the lens assembly further includes a lens carrier and at least one split lens, the lens carrier being disposed on the photosensitive assembly, and the split lens being carried on the lens carrier, wherein the split lens includes: A first lens component, wherein the first lens element of the first lens component is a glass lens; A second lens component; and A buffer layer and an adhesive layer are provided, wherein the buffer layer is disposed on a first lens component, located between the first lens component and a second lens component, the first lens component is bonded to a light-incident side of the second lens component by the adhesive layer, the buffer layer absorbs the stress generated by temperature changes in the adhesive layer, wherein the material of the buffer layer is ink, the CTE value of the buffer layer is less than the CTE value of the glass material, and the elastic modulus of the buffer layer is less than the elastic modulus of the glass material, wherein the first lens has an object side and an image side, the buffer layer is formed on the image side of the first lens, the adhesive layer bonds the buffer layer and the second lens component, wherein the first lens further includes an optically transparent area and an optical structure area integrally extending outward from the optically transparent area, wherein the optical structure area is supported on the outer periphery of the optically transparent area, the buffer layer is formed on the image side of the optical structure area, wherein the ink material forming the buffer layer is coated on the image side of the optical structure area of ​​the first lens and cured to form the buffer layer, wherein the thickness of the buffer layer is 2-10 μm.

10. The camera module according to claim 9, wherein the first lens is further provided with a buffer groove, wherein the buffer groove is formed in the optical structure area of ​​the first lens, and the buffer layer is disposed in the buffer groove of the first lens.

11. The camera module according to claim 9, wherein the first lens is further provided with at least one groove, wherein the at least one groove is formed in the optical structure region of the first lens, and the material forming the buffer layer is filled in the groove of the first lens.

12. The camera module according to any one of claims 9 to 11, wherein the first lens component further includes a lens sulcus located above the first lens element, the lens sulcus being fixed to the second lens component, thereby protecting the first lens element.

13. The camera module according to claim 12, wherein the lens black object is further provided with a light-collecting surface, wherein the light-collecting surface extends obliquely upward and outward from the image side to the object side, so as to increase the amount of light entering.

14. The camera module according to claim 12, wherein the lens black further comprises a support portion and a cover edge extending from the support portion in the optical axis direction, the cover edge covering the optical structure area of ​​the first lens, and the support portion of the lens black is bonded to the second lens component.

15. The camera module according to claim 14, wherein the buffer layer includes an upper buffer unit, a lower buffer unit, and a side buffer unit, wherein the upper buffer unit is formed on the object side of the optical structure region of the first lens, the lower buffer unit is formed on the image side of the optical structure region of the first lens, and the side buffer unit is formed on a ring side of the optical structure region of the first lens.

16. The camera module of claim 14, wherein the material of the lens black contains 20% or 30% glass fiber.

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