CN114041078B - Optical lens system and electronic device including the same - Google Patents
Optical lens system and electronic device including the same Download PDFInfo
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- CN114041078B CN114041078B CN201980094628.3A CN201980094628A CN114041078B CN 114041078 B CN114041078 B CN 114041078B CN 201980094628 A CN201980094628 A CN 201980094628A CN 114041078 B CN114041078 B CN 114041078B
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- optical lens
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- layered structure
- lens system
- camera module
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0085—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing wafer level optics
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
Abstract
An optical lens system (1) for an electronic device comprises a camera module (2) and a layered structure (3). The layered structure (3) comprises a first edge layer (3 a), a second edge layer (3 b) and at least one intermediate layer (3 c) arranged between the first edge layer (3 a) and the second edge layer (3 b). The layers (3 a,3b,3 c) of the layered structure (3) extend at least partially in parallel and are arranged directly adjacent to each other, the first edge layer (3 a) being a transparent display layer. The optical lens system (1) further comprises an optical lens (4), the optical lens (4) comprising a first surface (4 a), a second surface (4 b) and a body (4 c) extending between the first surface (4 a) and the second surface (4 b). The first surface (4 a) is at least partially adhered to the transparent display layer (3 a) by an adhesive layer (3 d). The second surface (4 b) is arranged adjacent to the camera module (2), and an air gap (5) separates the second surface (4 b) from the camera module (2) at least partly. The optical lens (4) extends partially through the layered structure (3) in a first direction (D1), wherein the first direction (D1) is perpendicular to the parallel layers between the transparent display layer (3 a) and the camera module (2). By placing the camera module outside the layered structure, the user can hardly see the camera module from the outside of the electronic device, and can place the camera module at will as long as there is space available in the electronic device.
Description
Technical Field
The present invention relates to an optical lens system for an electronic device. The optical lens system comprises a camera module, a layered structure and an optical lens.
Background
In designing imaging systems such as cameras for various electronic devices, several challenges must be addressed. The external dimensions of electronic devices such as cell phones are preferably as small as possible, and the imaging system must be sized to ensure adequate image clarity, spatial frequency, sensitivity, etc.
Furthermore, electronic devices require high performance imaging systems, thereby requiring larger sensors and optics, resulting in thicker and larger products.
In addition, in order to obtain high quality images, the imaging system must be close to the outer surface of the device, i.e. close to the display screen. As devices become smaller and displays become larger, it is very difficult to place the imaging system near the surface of the display screen because the imaging system has limited available locations and is easily visible from outside the electronic device.
Disclosure of Invention
It is an object of the present invention to provide an improved optical lens system. The above and other objects are achieved by the features of the independent claims. Further implementations are evident in the dependent claims, the description and the figures.
According to a first aspect, an optical lens system for an electronic device is provided. The optical lens system includes: a camera module; the layered structure comprises a first edge layer, a second edge layer and at least one middle layer arranged between the first edge layer and the second edge layer, wherein each layer of the layered structure at least partially extends in parallel and is arranged to be directly adjacent to each other, and the first edge layer is a transparent display layer; an optical lens comprising a first surface, a second surface and a body extending between the first surface and the second surface, wherein the first surface is at least partially adhered to the transparent display layer by an adhesive layer, the second surface is disposed adjacent to the camera module, an air gap at least partially separates the second surface from the camera module, and the optical lens extends partially through the layered structure in a first direction, wherein the first direction is perpendicular to each parallel layer between the transparent display layer and the camera module.
By means of the technical scheme, the camera module can be placed outside the layered structure and kept at a certain distance from the edge transparent display layer. This not only makes the camera module hardly visible to the user from the outside of the electronic device, but also eliminates the need to provide an air gap between the transparent display layer and the camera module. In addition, because the camera module is placed outside the layered structure, the camera module can be placed at will as long as available space is available in the electronic device.
In a possible implementation manner of the first aspect, a thickness of the air gap in the first direction is less than 0.5mm, preferably equal to or less than 0.3mm.
In a further possible implementation manner of the first aspect, a thickness of the body of the optical lens in a first direction is equal to or less than 1.1mm.
In a further possible implementation of the first aspect, the first and second surfaces of the optical lens comprise transparent planes, and an edge surface of the body is opaque. This helps to form an optical channel (optical tube) for the incident light to enter the camera module directly, and if an opening extends between the transparent display layer and the camera module, the diameter of the optical channel can be reduced.
In a further possible implementation of the first aspect, the optical lens further comprises an anti-reflective layer adhered to at least one of the first surface and the second surface of the optical lens. This allows as much incident light as possible to pass through the first and second surfaces.
In a further possible implementation of the first aspect, the optical lens is made of a monolithic glass material or plastic material. This helps to provide an optical lens that is as simple and low cost as possible.
In a further possible implementation of the first aspect, the optical lens extends in the first direction through layers of the layered structure, except for the transparent display layer and the adhesive layer. This facilitates the placement of the camera module outside the layered structure and at a distance from the transparent display layer.
In a further possible implementation of the first aspect, the adhesive layer comprises an optical glue (optically clear adhesive).
In a further possible implementation manner of the first aspect, the second edge layer of the layered structure is a support layer for supporting at least one of the intermediate layers, and the camera module is connected to the support layer. This makes the optical lens system not only stable, but also independent of other internal components such as a printed circuit board.
In a further possible implementation of the first aspect, each layer of the layered structure is solid or liquid.
In a further possible implementation manner of the first aspect, the camera module includes a camera aperture, a lens device and an image sensor, the camera module is arranged such that the lens device is located between the camera aperture and the image sensor, the camera aperture is arranged adjacent to the second surface of the optical lens, and the image sensor extends parallel to the layers of the layered structure. This helps to form a structure with high space utilization.
In a further possible implementation of the first aspect, the body of the optical lens comprises a light path such that incident light propagates through the optical lens to the image pickup aperture after passing through a portion of the transparent display layer.
According to a second aspect, there is provided an electronic device comprising a device base and an optical lens system according to the above. The display screen and the display screen cover plate of the electronic device are formed by a layered structure of the optical lens system, a transparent display layer of the layered structure forms the display screen cover plate, the remaining layers of the layered structure form the display screen, and the optical lenses of the optical lens system partially extend through the layered structure in the direction from the transparent display layer to the device base.
The technical scheme provides the electronic equipment, a user cannot see the camera module from the outside of the electronic equipment, and the camera module can be placed at will as long as available space is available in the electronic equipment.
In a possible implementation manner of the second aspect, the camera module of the optical lens system is disposed adjacent to the device base. The camera module may thus be arranged adjacent to any other internal component which is part of or arranged on the device base, which may be a printed circuit board or the like.
In a further possible implementation manner of the second aspect, the camera module is connected to the device base. This helps establish a stable connection with the structural components of the electronic device.
This and other aspects will be apparent from the embodiments described below.
Drawings
In the following detailed description of the invention, aspects, embodiments and implementations are explained in more detail with reference to exemplary embodiments shown in the drawings.
Fig. 1 is a schematic illustration of an optical lens system provided in one embodiment of the invention.
Fig. 2 is a schematic illustration of an electronic device including an optical lens system according to one embodiment of the present invention.
Fig. 3 is yet another schematic illustration of an optical lens system through which an embodiment of the present invention passes.
Fig. 4a is a schematic illustration of an optical system of the prior art.
Fig. 4b is a schematic illustration of an optical lens system provided by various embodiments of the present invention.
Fig. 5a shows the propagation of an incident ray in the optical system of fig. 4 a.
Fig. 5b shows the propagation of an incident ray in the embodiment shown in fig. 4 b.
Detailed Description
Fig. 2 is a schematic illustration of a portion of an electronic device 7. The electronic device 7 may be a smart phone, a wearable device, an artificial or virtual reality device, a tablet computer or television, etc. The electronic device 7 comprises a device base 8 and the optical lens system 1. The optical lens system 1 shown in detail in fig. 1 comprises a camera module 2, a layered structure 3 and an optical lens 4. As described in further detail below.
The display screen and the display screen cover of the electronic device 7 are formed by the layered structure 3 of the optical lens system 1, the transparent display layer 3a of the layered structure 3 forming the display screen cover, the remaining layers 3b and 3c of the layered structure 3 forming the display screen. The optical lens 4 of the optical lens system 1 extends partly through the layered structure 3 in the direction of the transparent display layer 3a to the device base 8.
In one embodiment, the camera module 2 of the optical lens system 1 is disposed adjacent to the device mount 8.
In yet another embodiment, the camera module 2 is connected to the device base 8.
The layered structure 3 comprises a first edge layer 3a, a second edge layer 3b and at least one intermediate layer 3c arranged between the first edge layer 3a and the second edge layer 3b, as shown in fig. 1. The first edge layer 3a is a transparent display layer, preferably a glass layer, having a thickness of about 0.6mm in the first direction D1. The intermediate layer 3c may be one or several of a sensor, a polarizer, an OLED panel, a base film, a back protective film (SCF tape), a copper foil (reflector sheet), a support, and an adhesive. The layers 3a,3b,3c of the layered structure 3 extend at least partly in parallel and are arranged directly next to each other. The layers 3a,3b,3c and 3d of the layered structure 3 may be solid or liquid.
The optical lens 4 includes a first surface 4a, a second surface 4b, and a body 4c extending between the first surface 4a and the second surface 4 b. The first surface 4a is at least partially adhered to the transparent display layer 3a by an adhesive layer 3d, preferably by a layer of optical glue.
The second surface 4b is arranged adjacent to the camera module 2 and the air gap 5 at least partly separates the second surface 4b from the camera module 2. The optical lens 4 extends partly through the layered structure 3 in a first direction D1, which is perpendicular to the parallel layers between the transparent display layer 3a and the camera module 2. Preferably, the optical lens 4 extends through the layers of the layered structure 3 in the first direction D1, except for the transparent display layer 3a and the adhesive layer 3D.
In one embodiment, the thickness of the air gap 5 in the first direction D1 is less than 0.5mm, preferably equal to or less than 0.3mm. The longitudinal extension or height of the optical lens 4 between the first surface 4a and the second surface 4b is determined according to the requirements provided by the camera module 2. In one embodiment, the thickness of the body 4c of the optical lens 4 in the first direction D1 is equal to or less than 1.1mm.
The optical lens 4 may be made of several pieces of glass material or plastic material, or preferably of one single piece of glass material or plastic material. The glass material may be BK5, BK7, high refractive index material SF58, LAKN14, and/or LASF35. The plastic material may be polymethyl methacrylate (polymethylmethacrylate) or cyclic olefin copolymer (cyclic olefin copolymer), etc.
The first surface 4a and the second surface 4b of the optical lens 4 may include transparent planes affecting optical performance, and the edge surface 4d of the body 4c may be opaque. Opacity can be achieved by an index matching black paint or a roughened surface with black paint to remove any total internal reflection. The optical lens 4 may further include an anti-reflection layer 6, the anti-reflection layer 6 being adhered to at least one of the first surface 4a and the second surface 4b of the optical lens 4.
The adhesive layer 3D may include an optical paste (optically clear adhesive) having a thickness in the first direction D1 of about 0.1mm. One or several intermediate layers 3c may also comprise an optical glue.
In an embodiment, the second edge layer 3b of the layered structure 3 is a support layer for supporting the at least one intermediate layer 3c, the camera module 2 being connected to the support layer 3b.
The camera module 2 includes a camera aperture 2a, a lens device 2b, and an image sensor 2c, and the camera module 2 is arranged such that the lens device 2b is located between the camera aperture 2a and the image sensor 2 c. The image pickup aperture 2a is arranged adjacent to the second surface 4b of the optical lens 4, and the image sensor 2c extends parallel to the layers 3a,3b,3c and 3d of the layered structure 3.
In one embodiment, the body 4c of the optical lens 4 includes a light path such that incident light propagates through the optical lens 4 to the image pickup aperture 2a after passing through a portion of the transparent display layer 3 a.
Fig. 4a and 4b and fig. 5a and 5b show a comparison of the propagation of an incident ray in the prior art solution with the propagation of an incident ray in the present invention. Fig. 4a and 5a show prior art solutions, and fig. 4b and 5b show different embodiments of the invention. The incident light rays 9a and 10a propagate into the camera module 2 as light rays 9b and 10b.
In the prior art solution shown, an air gap is present between the transparent display layer 3a and the camera module 2. This requires that the opening extending between the transparent display layer and the camera module has dimensions of 3.4mm x 3.9 mm. Fig. 5a shows that this opening has x=3.6 mm and y=4.0 mm.
As described above, the glass material of the optical lens 4 may be BK7, LAKN14, and/or LASF35, or the like. When BK7 material is used, the size of the opening extending between the transparent display layer and the camera module may be 3.06mm by 3.34mm. When a LAKN14 material is used, the size of the opening extending between the transparent display layer and the camera module may be 2.98mm by 3.24mm. When using LASF35 material, the size of the opening extending between the transparent display layer and the camera module may be 2.88mm by 3.12mm. Fig. 5b shows that the openings with x=3.2 mm and y=3.4 mm when BK7 or LAKN14 is used and the openings with x=3.0 mm and y=3.2 mm when LASF35 is used. Thus, the size of the opening is significantly reduced compared to the prior art.
Various aspects and implementations have been described herein in connection with various embodiments. However, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed subject matter, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
The reference signs used in the claims shall not be construed as limiting the scope.
Claims (15)
1. An optical lens system (1) for an electronic device, characterized in that,
the optical lens system (1) includes:
a camera module (2);
-a layered structure (3) comprising a first edge layer (3 a), a second edge layer (3 b) and at least one intermediate layer (3 c) arranged between the first edge layer (3 a) and the second edge layer (3 b), wherein the layers (3 a,3b,3 c) of the layered structure (3) extend at least partly in parallel and are arranged directly next to each other, the first edge layer (3 a) being a transparent display layer;
an optical lens (4) being a single component, the optical lens (4) comprising a first surface (4 a), a second surface (4 b) and a body (4 c) extending between the first surface (4 a) and the second surface (4 b), wherein,
the first surface (4 a) is at least partially adhered to the transparent display layer (3 a) by an adhesive layer (3 d),
the second surface (4 b) being arranged adjacent to the camera module (2), an air gap (5) at least partly separating the second surface (4 b) from the camera module (2), the camera module (2) being located outside the layered structure (3),
the optical lens (4) extends partially through the layered structure (3) in a first direction (D1) and is mounted within the layered structure (3), wherein the first direction (D1) is perpendicular to the parallel layers between the transparent display layer (3 a) and the camera module (2).
2. Optical lens system (1) according to claim 1, characterized in that,
the thickness of the air gap (5) in the first direction (D1) is less than 0.5mm.
3. Optical lens system (1) according to claim 1 or 2, characterized in that,
the thickness of the body (4 c) of the optical lens (4) in the first direction (D1) is equal to or less than 1.1mm.
4. Optical lens system (1) according to claim 1 or 2, characterized in that,
the first surface (4 a) and the second surface (4 b) of the optical lens (4) comprise transparent planes, and the edge surface (4 d) of the body (4 c) is opaque.
5. Optical lens system (1) according to claim 1 or 2, characterized in that,
the optical lens (4) further comprises an anti-reflection layer (6), the anti-reflection layer (6) being adhered to at least one of the first surface (4 a) and the second surface (4 b) of the optical lens (4).
6. Optical lens system (1) according to claim 1 or 2, characterized in that,
the optical lens (4) is made of a monolithic glass or plastic material.
7. Optical lens system (1) according to claim 1 or 2, characterized in that,
the optical lens (4) extends through the layers of the layered structure (3) in the first direction (D1), except for the transparent display layer (3 a) and the adhesive layer (3D).
8. Optical lens system (1) according to claim 1 or 2, characterized in that,
the adhesive layer (3 d) comprises an optical glue.
9. Optical lens system (1) according to claim 1 or 2, characterized in that,
the second edge layer (3 b) of the layered structure (3) is a support layer for supporting at least one of the intermediate layers (3 c), the camera module (2) being connected to the support layer (3 b).
10. Optical lens system (1) according to claim 1 or 2, characterized in that,
each layer (3 a,3b,3c,3 d) of the layered structure (3) is solid or liquid.
11. Optical lens system (1) according to claim 1 or 2, characterized in that,
the camera module (2) comprises a camera aperture (2 a), a lens device (2 b) and an image sensor (2 c), the camera module (2) is arranged such that the lens device (2 b) is located between the camera aperture (2 a) and the image sensor (2 c), the camera aperture (2 a) is arranged adjacent to the second surface (4 b) of the optical lens (4), and the image sensor (2 c) extends parallel to the layers (3 a,3b,3c,3 d) of the layered structure (3).
12. Optical lens system (1) according to claim 11, characterized in that,
the body (4 c) of the optical lens (4) comprises a light path such that incident light propagates through the optical lens (4) to the image pickup aperture (2 a) after passing through a portion of the transparent display layer (3 a).
13. An electronic device (7) comprising a device base (8) and an optical lens system (1) according to any one of claims 1 to 12, characterized in that,
the display screen and the display screen cover plate of the electronic device (7) are formed by a layered structure (3) of the optical lens system (1),
the transparent display layer (3 a) of the layered structure (3) forms the display screen cover plate,
the remaining layers (3 b,3 c) of the layered structure (3) form the display screen,
an optical lens (4) of the optical lens system (1) extends partly through the layered structure (3) in a direction from the transparent display layer (3 a) to the device base (8).
14. Electronic device (7) according to claim 13, characterized in that,
the camera module (2) of the optical lens system (1) is arranged adjacent to the device base (8).
15. Electronic device (7) according to claim 14, characterized in that,
the camera module (2) is connected to the device base (8).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2019/057880 WO2020192926A1 (en) | 2019-03-28 | 2019-03-28 | Optical lens system and electronic device comprising said optical lens system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114041078A CN114041078A (en) | 2022-02-11 |
| CN114041078B true CN114041078B (en) | 2023-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980094628.3A Active CN114041078B (en) | 2019-03-28 | 2019-03-28 | Optical lens system and electronic device including the same |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3918396A1 (en) |
| CN (1) | CN114041078B (en) |
| WO (1) | WO2020192926A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113747032B (en) * | 2021-09-26 | 2023-07-28 | 维沃移动通信有限公司 | Camera module and electronic equipment |
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| US9736383B2 (en) * | 2015-10-30 | 2017-08-15 | Essential Products, Inc. | Apparatus and method to maximize the display area of a mobile device |
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- 2019-03-28 WO PCT/EP2019/057880 patent/WO2020192926A1/en unknown
- 2019-03-28 CN CN201980094628.3A patent/CN114041078B/en active Active
- 2019-03-28 EP EP19716325.6A patent/EP3918396A1/en active Pending
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| CN101762860A (en) * | 2008-12-23 | 2010-06-30 | 安泰约恩国际公司 | Optical unit |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2020192926A1 (en) | 2020-10-01 |
| CN114041078A (en) | 2022-02-11 |
| EP3918396A1 (en) | 2021-12-08 |
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