CN112987220A - Optical lens, camera module and electronic equipment - Google Patents
Optical lens, camera module and electronic equipment Download PDFInfo
- Publication number
- CN112987220A CN112987220A CN202110348783.2A CN202110348783A CN112987220A CN 112987220 A CN112987220 A CN 112987220A CN 202110348783 A CN202110348783 A CN 202110348783A CN 112987220 A CN112987220 A CN 112987220A
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- lens
- groove
- optical
- optical lens
- optical filter
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- 230000003287 optical effect Effects 0.000 title claims abstract description 186
- 239000003292 glue Substances 0.000 claims description 62
- 239000012790 adhesive layer Substances 0.000 claims description 53
- 238000003825 pressing Methods 0.000 claims description 43
- 239000000853 adhesive Substances 0.000 claims description 18
- 230000001070 adhesive effect Effects 0.000 claims description 16
- 239000010410 layer Substances 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 10
- 239000000758 substrate Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/006—Filter holders
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
- G06F1/1686—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 the I/O peripheral being an integrated camera
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
Abstract
The invention relates to the technical field of lenses, and discloses an optical lens, a camera module and electronic equipment, which comprise a lens barrel, a lens assembly, a press ring and an optical filter, wherein the lens barrel comprises an object side end and an image side end, the lens assembly is arranged in the lens barrel, the lens assembly is arranged close to the object side end, the press ring is at least partially arranged in the lens barrel, the press ring is positioned on one side, facing the image side, of the lens assembly, the press ring is provided with a light through hole and an accommodating groove, the light through hole penetrates through two opposite sides of the press ring, the accommodating groove is arranged along one circle of the light through hole, the optical filter is arranged in the accommodating groove, and the optical filter is covered on the light through hole. The total length of the optical lens is small, the mechanical back focal length is large, and the camera module can work normally.
Description
Technical Field
The present invention relates to the field of lens technologies, and in particular, to an optical lens, a camera module, and an electronic device.
Background
In the related art, in order to improve the degree of integration of the optical lens, the optical filter is provided in the barrel of the optical lens. However, electronic devices (mobile phones, tablet computers, etc.) are increasingly thinner and thinner, and the space reserved for the optical lens is less and less, so that the mechanical back focal length is smaller, and the normal operation of the camera module is affected.
Disclosure of Invention
The embodiment of the invention discloses an optical lens, a camera module and electronic equipment.
In a first aspect, an embodiment of the present invention discloses an optical lens, including a lens barrel, a lens assembly, a pressure ring and an optical filter, wherein the lens barrel includes an object side end and an image side end, the lens assembly is disposed in the lens barrel, the lens assembly is disposed near the object side end, the pressure ring is at least partially disposed in the lens barrel, the pressure ring is located on an image side of the lens assembly, the pressure ring is provided with a light through hole and an accommodation groove, the light through hole penetrates through two opposite sides of the pressure ring, the accommodation groove is disposed along a circumference of the light through hole, the optical filter is disposed in the accommodation groove, and the optical filter covers the light through hole.
The accommodating groove through the clamping ring is provided with the optical filter, so that the space occupied by the optical filter can be reduced, the overall structure of the optical lens is more tough, the total length of the optical lens is smaller, the mechanical back focal length is larger, and the normal work of the camera module applied to the optical lens is effectively ensured.
As an optional implementation manner, in an embodiment of the present invention, the accommodating groove is located on an image-side of the pressing ring, and the optical filter is bonded to the accommodating groove.
The optical filter is arranged in the accommodating groove in a bonding mode, on one hand, the bonding strength of the optical filter and the pressing ring is high, on the other hand, the assembling difficulty of the optical lens can be reduced, the production efficiency of the optical lens is improved, the difficulty of replacing the optical filter is reduced when the optical filter is damaged, and the maintenance cost of the optical lens is reduced.
As an optional implementation manner, in an embodiment of the present invention, the optical lens further includes a first adhesive layer, and the first adhesive layer is adhered to a surface of the optical filter, which is away from the image side end, and a groove bottom surface of the accommodating groove.
In the embodiment, the first adhesive layer is arranged to adhere the surface of the optical filter, which is far away from the image side end, to the bottom surface of the accommodating groove, so that the bonding area of the optical filter and the pressing ring is large, and the bonding strength is high.
As an alternative implementation manner, in the embodiment of the present invention, the first glue groove is a continuous annular groove;
or the first glue groove comprises a plurality of sub-glue grooves arranged at intervals, and each sub-glue groove is provided with one first glue layer.
This embodiment provides the first gluey groove of multiple not isostructure, can select according to actual conditions, satisfies different user demands.
As an alternative implementation manner, in the embodiment of the present invention, the filter is a circular filter or a square filter.
This embodiment provides the first gluey groove of multiple not isostructure, can select the collocation according to the structure of the optical filter of actual adoption, satisfies the user demand that does not use.
As an optional implementation manner, in an embodiment of the present invention, the optical filter is a square optical filter, the pressure ring includes a main body portion and four protruding portions, the light passing hole is disposed in the main body portion, the four protruding portions are disposed on the main body portion at intervals in pairs, the accommodating groove is formed between the four protruding portions, and four corners of the square optical filter are respectively located between two adjacent protruding portions.
The containing groove is formed between the four protruding parts, and the shape of the containing groove can be matched with the square optical filter, so that the overall structure of the optical lens is more compact.
As an optional implementation manner, in the embodiment of the present invention, a gap is formed between the peripheral side surface of the optical filter and the side wall surface of the receiving groove.
In this embodiment, a gap is formed between the peripheral side surface of the optical filter and the side wall surface of the accommodating groove, so that on one hand, the difficulty in assembling and disassembling the optical filter can be reduced, and on the other hand, the gap can provide an overflow space or a dispensing channel when the first adhesive layer adopts different dispensing methods.
As an optional implementation manner, in an embodiment of the present invention, the pressing ring is bonded to the lens barrel.
This embodiment sets up the light filter at the accepting groove through the mode that bonds, and on the one hand, the joint strength of clamping ring and lens cone is higher, and on the other hand can reduce optical lens's the equipment degree of difficulty, improves optical lens's production efficiency, and reduces the degree of difficulty of changing the clamping ring when the clamping ring is impaired, reduces optical lens's cost of maintenance.
As an optional implementation manner, in an embodiment of the present invention, the optical lens further includes a second adhesive layer, a groove is disposed on a peripheral side of the pressing ring, the second adhesive layer is disposed in the groove, and the second adhesive layer is adhered to an inner wall surface of the lens barrel.
This embodiment glues the groove through the week side at the clamping ring sets up the second, utilizes the second to glue the groove and sets up the second adhesive layer, and the second adhesive layer bonds in the internal face of lens cone to realize the bonding of clamping ring and lens cone, and the second glues the groove and can hold the second adhesive layer, reduce the space that the second adhesive layer occupy, do not influence the inside and outside footpath size of lens cone and clamping ring, keep miniaturized design.
In a second aspect, an embodiment of the present invention discloses a camera module, which includes a photosensitive element and the optical lens of the first aspect, wherein the photosensitive element is disposed on an image side of the optical lens. It can be understood that the camera module of the second aspect has the beneficial effects of the optical lens of the first aspect, and can reduce the risk of collision between the optical lens and the photosensitive component.
In a third aspect, an embodiment of the present invention discloses an electronic device, which includes a device main body and the camera module of the second aspect, where the camera module is disposed in the device main body.
It can be understood that the electronic device of the third aspect has the beneficial effects of the camera module of the second aspect.
Compared with the prior art, the embodiment of the invention at least has the following beneficial effects:
the embodiment of the invention provides an optical lens, a camera module and electronic equipment, wherein a lens assembly and a pressing ring are arranged through a lens barrel, the lens assembly is close to the object side end of the lens barrel, the pressing ring is positioned on one side, facing the image side, of the lens assembly, the pressing ring is provided with a light through hole and an accommodating groove, the light through hole penetrates through two opposite sides of the pressing ring, the accommodating groove is arranged along the circumference of the light through hole, and an optical filter is arranged in the accommodating groove, so that the space occupied by the optical filter can be reduced, the total length of the optical lens is reduced, the mechanical back focus is improved, and the normal.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for a person skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an optical lens according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of a circular filter and a pressure ring according to an embodiment of the present invention;
FIG. 3 is an exploded view of a circular filter and a pressure ring according to an embodiment of the present invention;
fig. 4 is a schematic view of a structure of a pressure ring and an optical filter of the related art;
FIG. 5 is a schematic structural diagram of a square filter and a pressure ring according to an embodiment of the present invention;
FIG. 6 is an exploded view of a square filter and a pressure ring according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view taken along line A-A of FIG. 5;
FIG. 8 is a schematic cross-sectional view taken along line B-B of FIG. 5;
fig. 9 is a schematic structural diagram of a camera module disclosed in the second embodiment of the present invention;
fig. 10 is a schematic block diagram of the electronic device according to the third embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.
The invention discloses an optical lens, a camera module and electronic equipment.
Example one
Referring to fig. 1 to fig. 3, a schematic structural diagram of an optical lens 100 according to an embodiment of the present invention is shown, where the optical lens 100 includes a lens barrel 10, a lens assembly 11, a press ring 12 and a filter 13, the lens barrel 10 includes an object side end 10a and an image side end 10b, the lens assembly 11 is disposed in the lens barrel 10, the lens assembly 11 is disposed near the object side end 10a, the press ring 12 is disposed in the lens barrel 10, the press ring 12 is disposed on a side of the lens assembly 11 facing an image side, the press ring 12 is disposed with a light through hole 12a and an accommodating groove 12b, the light through hole 12a penetrates through two opposite sides of the press ring 12, the accommodating groove 12b is disposed along a circumference of the light through hole 12a, the filter 13 is disposed in the accommodating groove 12b, and the filter 13 is sealed in the light through hole 12 a.
The lens assembly 11 includes a plurality of lenses stacked in sequence. For example, as shown in fig. 1, the number of the lenses of the lens assembly 11 of the present embodiment is 3, and in some other embodiments, the number of the lenses may be 2, 4, 5, 6, etc., which is not limited in this embodiment.
In this embodiment, the lens assembly 11 and the pressing ring 12 are disposed on the lens barrel 10, the lens assembly 11 is close to the object side 10a of the lens barrel 10, the pressing ring 12 is disposed on one side of the lens assembly 11 facing the image side 10b, the optical filter 13 is disposed on the pressing ring 12, and the optical filter 13 covers the light-passing hole 12a of the pressing ring 12, so as to improve the integration degree of the optical lens 100. Considering that the optical filter 13 is integrated in the optical lens 100, the TTL (Total Track Length) of the optical lens 100 is increased due to the thickness of the optical filter 13, and mobile devices (mobile phones, tablet computers, and the like) in related technologies are increasingly thinner and thinner, and the space reserved for the optical lens is less and less, so that the mechanical back focal Length is smaller, and the normal operation of the camera module is affected. Therefore, in the present embodiment, the accommodating groove 12b is disposed on the pressing ring 12, and the optical filter 13 is disposed in the accommodating groove 12b, so that the space occupied by the optical filter 13 can be effectively reduced, the overall structure of the optical lens 100 is more compact, the total length of the optical lens 100 is smaller, and the mechanical back focal length is larger.
Further, as shown in fig. 4, an opening of the light-passing hole 12 'a of the press ring 12' of the optical lens according to the related art, which faces the image side, is provided with an inclined surface 12 'b along a circumference of the press ring, and a part of light entering the lens barrel is transmitted to the inclined surface 12' b through the optical filter 13 'and is reflected by the inclined surface 12' b to generate stray light, which affects the imaging quality. Wherein the light ray conduction path for generating the stray light is shown by the dotted line with arrows in fig. 4. Therefore, as shown in fig. 2, in the present embodiment, the optical filter 13 is disposed by using the accommodating groove 12b, and the structure of the pressing ring 12 is changed by using the accommodating groove 12b, so that the structure of the inclined surface of the pressing ring 12 in the present embodiment is avoided, thereby reducing the risk of stray light generation and improving the imaging quality and the user experience. In fig. 2, the dotted line with an arrow indicates a path of a part of light entering the barrel 10, and the press ring 12 avoids the structure of the inclined surface, so that no stray light is generated.
In this embodiment, the accommodating groove 12b is located on a side of the pressing ring 12 facing the image side end 10b, and the optical filter 13 is adhered to the accommodating groove 12 b. It can be understood that, by providing the optical filter 13 in the accommodating groove 12b by means of adhesion, on one hand, the bonding strength between the optical filter 13 and the pressing ring 12 is high, and on the other hand, the difficulty in assembling the optical lens 100 can be reduced, the production efficiency of the optical lens 100 can be improved, and the difficulty in replacing the optical filter 13 when the optical filter 13 is damaged can be reduced, and the maintenance cost of the optical lens 100 can be reduced.
For example, referring to fig. 1 and fig. 2 again, the optical lens 100 further includes a first adhesive layer 14, and the first adhesive layer 14 is adhered to a surface of the optical filter 13 away from the image side end 10b and a groove bottom surface of the accommodating groove 12 b. It can be understood that the area of the surface of the optical filter 13 facing away from the image side end 10b and the groove bottom surface of the accommodating groove 12b is large, and the first adhesive layer 14 having a large area can be provided by bonding the first adhesive layer 14 to the both surfaces, thereby improving the bonding strength between the optical filter 13 and the pressure ring 12. In some other embodiments, the first adhesive layer 14 may be adhered to the peripheral side surface of the optical filter 13 and the sidewall surface of the receiving groove 12b, or the first adhesive layer 14 may be adhered to the peripheral side surface of the optical filter 13 and the sidewall surface of the receiving groove 12b, and a surface of the optical filter 13 away from the image-side end 10b and a groove bottom surface of the receiving groove 12b, which is not particularly limited in this embodiment.
Further, a first glue groove 12c is provided on the bottom surface of the housing groove 12b, and the first adhesive layer 14 is provided on the first glue groove 12 c. It is understood that the first adhesive layer 14 has a certain thickness, which affects the overall length of the optical lens 100. Therefore, in the embodiment, by using the first glue groove 12c to set the first glue layer 14, the space occupied by the first glue layer 14 can be effectively reduced, so that the overall structure of the optical lens 100 is more compact, the total length of the optical lens 100 is smaller, and the mechanical back focal length is larger.
In this embodiment, a gap S is formed between the peripheral surface of the filter 13 and the side wall surface of the housing groove 12 b. It can be understood that, on one hand, the gap S can provide an installation margin for the filter 13 to be installed in the receiving groove 12b, and when the filter 13 needs to be replaced, a fastening position is provided for detaching the filter 13 from the receiving groove 12b, so as to reduce the difficulty of assembly and disassembly. On the other hand, when the first adhesive layer 14 is adhered to the peripheral surface of the optical filter 13 and the sidewall surface of the accommodating groove 12b, the gap S can provide an accommodating space for the first adhesive layer 14. When the first adhesive layer 14 is adhered to the surface of the optical filter 13 away from the image side end 10b and the bottom surface of the accommodating groove 12b, the gap S may communicate with the first adhesive groove 12c, and at this time, the beneficial effect of the gap S is related to the adhesive dispensing manner of the first adhesive layer 14. Specifically, if the first adhesive layer 14 is dispensed in the first glue groove 12c, and then the optical filter 13 is pressed on the first adhesive layer 14 to adhere to the pressing ring 12, the gap S may provide a glue overflow space for the first adhesive layer 14 when the optical filter 13 is pressed on the first adhesive layer 14, so as to avoid the occurrence of the condition that the yield of the optical lens 100 is affected by glue overflow of the first adhesive layer 14 toward the light through hole 12a of the pressing ring 12. If the first adhesive layer 14 is dispensed by placing the optical filter 13 in the accommodating slot 12b and then dispensing the first adhesive into the first adhesive slot 12c, the gap S provides a dispensing channel for dispensing the first adhesive layer 14, and the first adhesive layer 14 is formed by dispensing the first adhesive into the gap S so that the adhesive flows into the first adhesive slot 12c along the gap S.
Optionally, the filter 13 is a circular filter or a square filter. It can be understood that the present embodiment provides the optical filter 13 with different shapes, which can be selected according to actual situations, and meets different use requirements.
As shown in fig. 3 and 5, in the present embodiment, the structure of the pressure ring 12 corresponding to the optical filters 13 of different shapes is different. Fig. 3 is a schematic structural diagram of a circular filter and a corresponding pressure ring 12, and fig. 5 is a schematic structural diagram of a square filter and a corresponding pressure ring 12.
As an alternative embodiment, the first glue groove 12c is a continuous annular groove. It is understood that, as shown in fig. 2 and 3, when the optical filter 13 is a circular optical filter, the first adhesive groove 12c may be designed as a continuous annular groove, and in this case, the first adhesive layer 14 is annular and matches with the circular optical filter, so that the overall structure of the optical lens 100 is relatively compact.
As another alternative, the first glue groove 12c includes a plurality of sub-glue grooves arranged at intervals, and each first glue groove 12c is provided with a first glue layer 14. It can be understood that, as shown in fig. 5 and fig. 6, when the optical filter 13 is a square optical filter, the first adhesive groove 12c may be designed as a plurality of sub-adhesive grooves, and the first adhesive layers 14 of each sub-adhesive groove are independent from each other and respectively adhered to each corner of the square optical filter, so that the bonding strength between the square optical filter and the pressing ring 12 is better, and the material of the first adhesive layer 14 is saved. In some other embodiments, when the filter 13 is a circular filter, the first glue groove 12c may also be designed as a plurality of sub-glue grooves, which is not specifically limited in this embodiment.
It can be known that, when the optical filter 13 adopts a circular optical filter, the structure of the first glue groove 12c is simpler, the production difficulty of the pressure ring 12 is lower, and when the optical filter 13 adopts a square optical filter, the cost of the square optical filter is lower. That is to say, the present embodiment provides the first glue grooves 12c with various different structures, which can be selected and matched according to the actually adopted structure of the optical filter 13, so as to satisfy different use requirements.
For example, as shown in fig. 6, the optical filter 13 is a square optical filter, the pressure ring 12 includes a main body 121 and four protrusions 122, the light passing hole 12a is disposed on the main body 121, the four protrusions 122 are disposed on the main body 121 at intervals, the accommodating groove 12b is formed between the four protrusions 122, and four corners of the square optical filter are respectively located between two protrusions 122. It can be understood that, by forming the receiving groove 12b between the four protrusions 122, the shape of the receiving groove 12b can be matched with the square filter, so that the overall structure of the optical lens 100 is more compact.
Further, when the optical filter 13 is a square optical filter, the first glue groove 12c may include four sub-glue grooves, each sub-glue groove is located between two adjacent protrusions 122, and the first glue layer 14 disposed in each sub-glue groove is adhered to each corner of the square optical filter, so that the optical filter 13 and the pressing ring 12 are joined, and the joining reliability is high.
Considering that the size of the first glue groove 12c is closely related to the size of the first adhesive layer 14, the present embodiment designs the size of the first glue groove 12c as follows:
illustratively, as shown in fig. 2 and 7, the first glue groove 12c has a depth h1，h1Not less than 0.05 mm. It will be appreciated that if the depth h of the first glue groove 12c is provided1If the thickness is less than 0.05mm, the depth of the first glue groove 12c is small, which cannot simultaneously satisfy the requirement that the first glue layer 14 has a large thickness and the first glue groove 12c is used to completely eliminate the influence of the increase of the total length of the optical lens 100 caused by the space occupied by the first glue layer 14. That is, if the first adhesive layer 14 is made to have a large thickness to ensure the bonding reliability of the optical filter 13 and the pressure ring 12, the depth h is set1The first glue groove 12c of < 0.05mm cannot fully accommodate the entire first adhesive layer 14, and a portion of the first adhesive layer 14 is located outside the first glue groove 12c, and at this time,the portion of the first adhesive layer 14 located outside the first glue groove 12c may cause the overall length of the optical lens 100 to increase. If the first adhesive layer 14 is completely accommodated in the first adhesive groove 12c, the depth h of the first adhesive groove 12c is larger1If the thickness of the first adhesive layer 14 is less than 0.05mm, the first adhesive layer 14 with a larger thickness cannot be provided, so that the reliability of the joint between the optical filter 13 and the pressing ring 12 is low, and the optical filter 13 and the pressing ring 12 are separated from each other, which affects the normal operation of the optical lens 100. Therefore, the depth h of the first glue groove 12c may be h1Not less than 0.05mm, effectively ensuring better joint reliability of the optical filter 13 and the press ring 12, reducing the total length of the optical lens 100, and the depth h of the first glue groove 12c1Can be 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.10mm, etc.
Furthermore, the width of the first glue groove 12c is d, and d is more than or equal to 0.05 mm. It can be understood that, if the width d of the first glue groove 12c is less than 0.05mm, on one hand, the width d of the first glue groove 12c is smaller, and the area of the first glue layer 14 is smaller, which affects the bonding strength between the optical filter 13 and the pressing ring 12, and on the other hand, the width d of the first glue groove 12c is smaller, which may cause the first glue layer 14 to overflow glue, and a portion of the first glue layer 14 that overflows to the outside of the first glue groove 12c is located between the optical filter 13 and the pressing ring 12, which may cause the optical filter 13 and the pressing ring 12 to be not tightly bonded, and may cause the total length of the optical lens 100 to increase. Therefore, the width d of the first glue groove 12c can be d greater than or equal to 0.05mm, so that the bonding strength between the optical filter 13 and the press ring 12 is effectively ensured to be high, and the risk of glue overflow is reduced, and the width of the first glue groove 12c can be 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.10mm and the like.
In the present embodiment, as shown in fig. 2 and 8, the filter 13 has a thickness t1The depth of the storage groove 12b is h2，h2≥2/3t1. It will be understood that if the depth h of the receiving groove 12b is set2＜2/3t1The portion of the receiving groove 12b capable of receiving the filter 13 is smaller than the thickness t of the filter 1312/3, the filter 13 exceeds 3/1 of thickness t1Is located outside the accommodating groove 12b, the risk of damage to the optical filter 13 is high. Therefore, the depth h of the receiving groove 12b2Can be h2≥2/3t1The accommodating groove 12b accommodates the optical filter 13 as much as possible, so that the portion of the optical filter 13 outside the accommodating groove 12b is reduced, the risk of damage to the optical filter 13 is reduced, and the total length of the optical lens 100 can be reduced as much as possible.
The compression ring 12 has a thickness t2，t2Not less than 0.3 mm. It will be appreciated that if the thickness t of the pressure ring 12 is provided2Less than 0.3mm, the thickness t of the pressure ring 122Smaller, the overall strength and molding stability of the pressing ring 12 are lower, and the portion of the pressing ring 12 provided with the accommodating groove 12b has lower strength and is liable to be irreversibly damaged by breakage, bending, or the like. Therefore, the thickness t of the pressure ring 122Can be t2Not less than 0.3mm, the whole intensity and the forming stability of the pressure ring 12 are higher, the risk of damage to the pressure ring 12 is reduced, the normal work of the optical lens 100 is facilitated, and the thickness t of the pressure ring 12 is larger than or equal to2Can be 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, etc.
Illustratively, referring again to fig. 1, the press ring 12 is bonded to the barrel 10. It can be understood that, the press ring 12 is arranged in the lens barrel 10 by means of bonding, on one hand, the bonding strength between the press ring 12 and the lens barrel 10 is high, on the other hand, the difficulty of assembling the optical lens 100 can be reduced, the production efficiency of the optical lens 100 is improved, and the difficulty of replacing the press ring 12 when the press ring 12 is damaged is reduced, and the maintenance cost of the optical lens 100 is reduced.
Further, referring to fig. 1 and fig. 2 again, the optical lens 100 further includes a second adhesive layer 15, a second adhesive groove 12d is disposed on the circumferential side of the pressing ring 12, the second adhesive layer 15 is disposed in the second adhesive groove 12d, and the second adhesive layer 15 is adhered to the inner wall surface of the lens barrel 10. It can be understood that the second adhesive layer 15 is disposed in the second adhesive groove 12d, so that the space occupied by the second adhesive layer 15 can be reduced, and the lens barrel 10 and the pressing ring 12 can be bonded without affecting the inner and outer diameter dimensions of the lens barrel 10 and the pressing ring 12, thereby keeping the optical lens 100 in a miniaturized design.
In an optical lens 100 according to a first embodiment of the present invention, a lens assembly 11 and a pressing ring 12 are disposed through a lens barrel 10, the lens assembly 11 is close to an object side end 10a of the lens barrel 10, the pressing ring 12 is disposed on a side of the lens assembly 11 facing an image side end 10b, the pressing ring 12 has a light through hole 12a and an accommodating groove 12b, the light through hole 12a penetrates through two opposite sides of the pressing ring 12, the accommodating groove 12b is disposed on a side of the pressing ring 12 facing the image side end 10b, the accommodating groove 12b is disposed along a circumference of the light through hole 12a, and the accommodating groove 12b is utilized to dispose an optical filter 13, so that a space occupied by the optical filter 13 can be reduced, thereby reducing a total length of the optical lens 100, improving a mechanical back focus.
Example two
Referring to fig. 9, which is a schematic diagram of a structure of a camera module 200 according to a second embodiment of the present disclosure, the camera module 200 includes a photosensitive element 20 and the optical lens 100 according to the first embodiment, and the photosensitive element 20 is disposed on an image side of the optical lens 100.
It can be understood that the total length of the optical lens 100 is short, and the mechanical back focal length is large, so as to reduce the risk of mutual collision between the optical lens 100 and the photosensitive assembly 20, and facilitate reducing the assembly tolerance of the camera module 200 and the precision requirement of the mechanical back focal length, so as to reduce the assembly difficulty.
The photosensitive assembly 20 includes a substrate 201 and a photosensitive element 202, the photosensitive element 202 is disposed on the substrate 201, the driving device 21 is disposed on the substrate 201, and an optical axis of the optical lens 100 coincides with an optical axis of the photosensitive element 202. Wherein the optical axis of the optical lens 100 and the optical axis of the light sensing element 202 are shown by a dashed line a in fig. 9. It is understood that the photosensitive assembly 20 is used to receive the light signal for converting into an image, and the above description of the photosensitive assembly 20 is intended to illustrate one possible solution, not to specifically limit the photosensitive assembly 20 of the present embodiment, and in some other embodiments, the photosensitive assembly 20 may have other structural solutions.
Alternatively, the substrate 201 may be any one of a hard circuit board, a rigid-flex board, or a flexible circuit board. It is understood that different types of the substrate 201 may be selected according to actual situations to meet different usage requirements, and this embodiment is not particularly limited thereto.
Illustratively, the photosensitive element 202 may be a CCD (Charge-coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor). Different types of the photosensitive elements 202 can be selected according to actual situations to meet different use requirements, which is not specifically limited in this embodiment.
That is, the photosensitive assembly 20 can be matched with different substrates 201 and photosensitive elements 202 according to actual needs, so as to meet different use requirements.
In some embodiments, the camera module 200 further includes a driving device 21, the driving device 21 is disposed on the photosensitive element 20, the optical lens 100 is disposed on the driving device 21, and the driving device 21 is used for adjusting a distance from the optical lens 100 to the photosensitive element 20.
The driving device 21 may be, for example, a voice coil motor or a piezoelectric motor. It will be appreciated that the present embodiment provides a plurality of different types of driving devices 21, which can be selected according to actual conditions to meet different requirements.
The second embodiment of the present invention provides a camera module 200, in which the total length of the optical lens 100 is large, the mechanical back focal length is large, the risk of mutual collision between the optical lens 100 and the photosensitive component 20 is low, the normal operation of the camera module 200 is facilitated, and the assembly difficulty of the camera module 200 is low.
EXAMPLE III
Referring to fig. 10, which is a schematic diagram of a structure of an electronic apparatus 300 according to a third embodiment of the present invention, the electronic apparatus 300 includes an apparatus main body 30 and a camera module 200 according to a second embodiment, and the camera module 200 is disposed on the apparatus main body 30.
The electronic device 300 of the present embodiment may be, for example, a mobile phone, a tablet computer, a camera, a monitoring probe, or the like. The camera module 200 can be fixed or movably disposed on the device body 30, and when the electronic device 30 is a mobile phone or a tablet, the camera module 200 can be a front camera module or a rear camera module of the mobile phone or the tablet.
The third embodiment of the invention provides the electronic device 300, which has the advantages that the total length of the optical lens is large, the mechanical back focal length is large, the risk of mutual collision between the optical lens and the photosensitive assembly is high, the normal work of the camera module is facilitated, and the assembly difficulty of the camera module is low.
The optical lens, the camera module and the electronic device disclosed in the embodiment of the invention are introduced in detail, and an example is applied to explain the principle and the implementation of the invention, and the description of the embodiment is only used for helping to understand the optical lens, the camera module and the electronic device and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (12)
1. An optical lens, comprising:
a lens barrel including an object side end and an image side end;
the lens assembly is arranged in the lens barrel and is close to the object side end;
the lens barrel comprises a lens assembly, a lens barrel, a pressing ring, a lens holder and a lens, wherein the lens assembly is arranged in the lens barrel, the pressing ring is arranged on one side, facing an image side, of the lens assembly, the pressing ring is provided with a light through hole and an accommodating groove, the light through hole penetrates through two opposite sides of the pressing ring, and the accommodating groove is arranged along one circle of the light through hole; and
the optical filter is arranged in the accommodating groove and covers the light through hole.
2. The optical lens assembly as claimed in claim 1, wherein the accommodating groove is located on a side of the pressing ring facing an image side, and the optical filter is bonded to the accommodating groove.
3. The optical lens of claim 2, further comprising a first adhesive layer, wherein the first adhesive layer is adhered to a surface of the optical filter facing away from the image side and a bottom surface of the accommodating groove.
4. An optical lens according to claim 3, wherein a first glue groove is formed on a bottom surface of the accommodating groove, and the first adhesive layer is disposed in the first glue groove.
5. An optical lens according to claim 4, wherein the first glue groove is a continuous annular groove;
or the first glue groove comprises a plurality of sub-glue grooves arranged at intervals, and each sub-glue groove is provided with one first glue layer.
6. The lens module as claimed in any one of claims 1 to 5, wherein the filter is a circular filter or a square filter.
7. An optical lens according to any one of claims 1 to 5, wherein the optical filter is a square optical filter, the pressure ring includes a main body portion and four protruding portions, the light-passing hole is disposed in the main body portion, two of the four protruding portions are disposed on the main body portion at intervals, the four protruding portions form the receiving groove therebetween, and four corners of the square optical filter are respectively disposed between two adjacent protruding portions.
8. The optical lens according to any one of claims 1 to 5, wherein a gap is formed between a peripheral surface of the filter and a sidewall surface of the receiving groove.
9. An optical lens barrel according to any one of claims 1 to 5, wherein the press ring is bonded to the lens barrel.
10. The optical lens of claim 9, further comprising a second adhesive layer, wherein a second adhesive groove is formed on the circumferential side of the pressing ring, the second adhesive layer is disposed in the second adhesive groove, and the second adhesive layer is adhered to the inner wall surface of the lens barrel.
11. A camera module, comprising a photosensitive element and the optical lens of any one of claims 1 to 10, wherein the photosensitive element is disposed on an image side of the optical lens.
12. An electronic apparatus comprising an apparatus main body and the camera module according to claim 11, the camera module being provided to the apparatus main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110348783.2A CN112987220A (en) | 2021-03-31 | 2021-03-31 | Optical lens, camera module and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110348783.2A CN112987220A (en) | 2021-03-31 | 2021-03-31 | Optical lens, camera module and electronic equipment |
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| CN112987220A true CN112987220A (en) | 2021-06-18 |
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| CN202110348783.2A Pending CN112987220A (en) | 2021-03-31 | 2021-03-31 | Optical lens, camera module and electronic equipment |
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| JP7127229B1 (en) | 2021-12-16 | 2022-08-29 | エーエーシー オプティックス （ソシュウ） カンパニーリミテッド | lens module |
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