Camera module and electronic equipment
By designing the imaging and recognition areas of the filter in the camera module, and processing the light signal separately, the problem of excessive light interference information is solved, and a clearer imaging effect is achieved.
Patent Information
- Application Number
- CN202520225186.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-12
AI Technical Summary
In existing technologies, camera modules handle the complex and varied light reflected from objects, resulting in a significant amount of interference information and affecting imaging performance.
The design employs a filter to distinguish between the imaging area and the recognition area. The light signal from the imaging area is converted into a first electrical signal, and the light signal from the recognition area is converted into a second electrical signal. The image sensor processes these signals separately to reduce interference.
By identifying the light signals of the imaging area to assist the electrical signals of the imaging area, interference during imaging is reduced and the imaging effect is improved.
Smart Images
Figure CN223729822U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of camera imaging, in particular to a camera module and an electronic device. BACKGROUND
[0002] The camera module is a device for converting light reflected by a scene into an electrical signal.
[0003] The camera module generally includes a lens, a filter, and an image sensor. Light passing through the lens can pass through the filter. After the filtering effect of the filter, the light falls on the photoelectric sensor, so that the photoelectric sensor can generate an electrical signal corresponding to the light.
[0004] In related technologies, the light reflected by the scene is often complex and variable. When the camera module converts it into a corresponding electrical signal, it will carry a lot of interference information, affecting the imaging effect. Invention content
[0005] In view of this, the present application provides a camera module and an electronic device to help identify interference information in the light of imaging.
[0006] Specifically, the technical scheme includes the following:
[0007] The first aspect of the present application provides a camera module, which includes a filter and an image sensor, wherein,
[0008] The filter has an imaging area and an identification area. The wavelength range of the light signal passing through the imaging area is different from the wavelength range of the light signal passing through the identification area.
[0009] The image sensor is configured to convert the light signal from the imaging area into a first electrical signal and convert the light signal from the identification area into a second electrical signal.
[0010] Optionally, the area of the identification area is smaller than the area of the imaging area.
[0011] Optionally, the identification area includes a first identification area, a second identification area, a third identification area, and a fourth identification area, wherein the first identification area, the second identification area, the third identification area, and the fourth identification area are arranged in sequence and spaced apart on the filter, or the second identification area extends along the circumference of the first identification area in a ring shape, the third identification area extends along the circumference of the second identification area in a ring shape, and the fourth identification area extends along the circumference of the third identification area in a ring shape.
[0012] Optionally, the wavelength range of the light signal passing through the first identification area is 404-472 nm, the wavelength range of the light signal passing through the second identification area is 504-574 nm, the wavelength range of the light signal passing through the third identification area is 642-676 nm, and the wavelength range of the light signal passing through the fourth identification area is 744-778 nm.
[0013] Optionally, the number of the identification areas is multiple, and the wavelength range of the light signal passing through at least two of the multiple identification areas is different.
[0014] Optionally, the identification area has a light filtering film.
[0015] Optionally, the image sensor comprises a light sensing part and a light filtering part, the light filtering part is located between the light filter and the light sensing part, the light filtering part has a gap, and the gap is configured to pass the light signal passing through the identification area.
[0016] Optionally, the projection of the identification area on the light sensing part coincides with the gap.
[0017] Optionally, the identification area is located in the imaging area.
[0018] The second aspect of the present application provides an electronic device comprising the camera module as described in the above technical solution.
[0019] The technical solution provided by the embodiments of the present application has at least the following beneficial effects: the first electric signal formed by the light signal passing through the imaging area and converted by the image sensor can be used to form a picture. The second electric signal formed by the light signal passing through the identification area and converted by the image sensor can be used to represent the interference information contained in the first electric signal. When the camera module receives the light signal, the identification of the light signal is realized by converting part of the light signal separately, and the second electric signal formed by the identification can be used to assist the imaging of the first electric signal, which is conducive to reducing the interference during imaging. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0021] Figure 1 A structural schematic diagram of a camera module provided by the embodiments of the present application;
[0022] Figure 2Part structure schematic diagram of the optical filter provided for the embodiment of the present application;
[0023] Figure 3 Structure schematic diagram of an image sensor provided for the embodiment of the present application;
[0024] Figure 4 Transmittance result diagram of the optical filter provided for the embodiment of the present application.
[0025] The reference signs in the drawings respectively represent:
[0026] 1. optical filter; 101, imaging area; 102, identification area; 1021, first identification area; 1022, second identification area; 1023, third identification area; 1024, fourth identification area; 11, optical film;
[0027] 2. image sensor; 21, light sensing part; 22, optical filtering part; 2201, notch;
[0028] 3. lens.
[0029] The specific embodiments of the present application have been shown in the above drawings, and will be described in more detail hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort fall within the scope of protection of the present application.
[0031] The positional nouns such as “upper”, “lower”, “lateral” and the like involved in the embodiments of the present application are generally based on the relative relationship of the positions shown in the drawings, and the use of these positional nouns is only for more clearly describing the structure and the relationship between the structures, and is not intended to describe absolute positions. When the product is placed in different attitudes, the positions may change, for example, “upper” and “lower” may be interchanged. Figure 1
[0032] Unless otherwise defined, all the technical terms used in the embodiments of the present application have the same meanings as commonly understood by those skilled in the art.
[0033] In order to make the technical solutions and advantages of the present application more clear, the embodiments of the present application will be described in further detail below in combination with the drawings.
[0034] A first aspect of the present application provides a camera module, as shown in Figure 1 and Figure 2 The camera module includes a filter 1 and an image sensor 2, wherein,
[0035] The filter 1 has an imaging area 101 and an identification area 102, the imaging area 101 is configured to pass light signals, and the identification area 102 is configured to pass light signals.
[0036] The image sensor 2 is configured to convert the light signals from the imaging area 101 into first electrical signals, and convert the light signals from the identification area 102 into second electrical signals.
[0037] It can be understood that the first electrical signals formed by the light signals passing through the imaging area 101 and converted by the image sensor 2 can be used to form pictures. The second electrical signals formed by the light signals passing through the identification area 102 and converted by the image sensor 2 can be used to characterize the interference information contained in the first electrical signals. When the camera module receives light signals, it realizes the identification of part of the light signals by converting them separately, and the second electrical signals formed by the identification can be used to assist the imaging of the first electrical signals, so as to facilitate the reduction of interference during imaging.
[0038] In an embodiment of the present application, the image sensor 2 can be a photosensor, which can generate an electrical signal corresponding to the light signal passing through the filter 1 under the action of the photoelectric effect, and the electrical signal can form an image after processing.
[0039] In an embodiment of the present application, the light signal can include visible light signals and invisible light signals. For example, the light signal passing through the imaging area 101 can include visible light signals and invisible light signals, and the light signal passing through the identification area 102 can include only visible light signals or only invisible light signals.
[0040] In an embodiment of the present application, the visible light signal can be a light signal with a wavelength range of 390-780 nm, and the invisible light signal can be a light signal with a wavelength less than 390 nm or a light signal with a wavelength greater than 780 nm.
[0041] In an embodiment of the present application, the first electrical signal can be used to characterize the color, intensity, etc. of the light signal passing through the imaging area 101.
[0042] In an embodiment of the present application, the second electrical signal can be used to characterize the color, intensity, etc. of the light signal passing through the imaging area 101.
[0043] In the embodiments of the present application, the image sensor 2 generally processes the received light signals in units of pixels. The size of the area of the identification region 102 can be the size of the area required for the light signal passing through to trigger only the photosensitive part 21 on one pixel. The size of the wavelength interval passing through each identification region 102 is 10 nm, which is conducive to improving the accuracy of the second electric signal converted by each photosensitive part 21. For the identification regions 102 with the same wavelength interval and different wavelength ranges, the light signals of different wavelength intervals can be identified to determine the specific wavelength range of the light entering the camera module.
[0044] For example, the wavelength range of the red light signal is 620-760 nm, and the identification region 102 can be 14. The wavelength ranges of the 14 identification regions 102 are 620-630 nm, 630-640 nm, 640-650 nm, 650-660 nm, 640-650 nm, 650-660 nm, 660-670 nm, 680-690 nm, 700-710 nm, 710-720 nm, 720-730 nm, 730-740 nm, 740-750 nm, and 750-760 nm, respectively.
[0045] In the embodiments of the present application, the identification region 102 can be in a geometric shape such as a rectangle or a circle, or a combination of two or more geometric shapes, or other shapes.
[0046] In the embodiments of the present application, the light signal passing through the identification region 102 and the imaging region 101 can be the light signal focused by the lens 3.
[0047] In some embodiments of the present application, as shown in Figure 2 The area of the identification region 102 is smaller than the area of the imaging region 101.
[0048] It can be understood that the identification region 102 is a position through which the light signal forming the second electric signal passes, and has a small area, which is conducive to improving the imaging range of the filter 1 and increasing the size of the imaged picture.
[0049] In the embodiments of the present application, for a picture, it includes millions or even tens of millions of pixels. Taking the area of 10,000 pixels on the filter 1 as the identification region 102 has little effect on the imaging effect, and therefore, the ratio of the area of the imaging region 101 to the area of the identification region 102 can be greater than 100.
[0050] In some embodiments of the present application, as shown in Figure 2As shown, the identification region 102 includes a first identification region 1021, a second identification region 1022, a third identification region 1023, and a fourth identification region 1024, wherein the first identification region 1021, the second identification region 1022, the third identification region 1023, and the fourth identification region 1024 are sequentially and spaced arranged on the filter 1.
[0051] It can be understood that the first identification region 1021, the second identification region 1022, the third identification region 1023, and the fourth identification region 1024 arranged in a spaced manner can pass light signals of different wavelength ranges. The sequentially and spaced arrangement manner is conducive to reducing the interference of the light signals passing through them, and thus is conducive to improving the reliability of the converted light signals of the image sensor 2.
[0052] In the embodiments of the present application, the first identification region 1021 can be in a geometric shape such as a rectangle or a circle, or can be a combination of two or more geometric shapes, or can be in other shapes.
[0053] In the embodiments of the present application, the second identification region 1022 can be in a geometric shape such as a rectangle or a circle, or can be a combination of two or more geometric shapes, or can be in other shapes.
[0054] In the embodiments of the present application, the third identification region 1023 can be in a geometric shape such as a rectangle or a circle, or can be a combination of two or more geometric shapes, or can be in other shapes.
[0055] In the embodiments of the present application, the fourth identification region 1024 can be in a geometric shape such as a rectangle or a circle, or can be a combination of two or more geometric shapes, or can be in other shapes.
[0056] In some embodiments of the present application, as shown in Figure 2 As shown, the identification region 102 includes a first identification region 1021, a second identification region 1022, a third identification region 1023, and a fourth identification region 1024, wherein the second identification region 1022 extends along the circumference of the first identification region 1021 to be annular, the third identification region 1023 extends along the circumference of the second identification region 1022 to be annular, and the fourth identification region 1024 extends along the circumference of the third identification region 1023 to be annular.
[0057] It can be understood that, since the light signals passing through the identification region 102 have undergone the filtering effect of the identification region 102, they can be directly received by the image sensor 2 to generate corresponding second electrical signals. Such a configuration is conducive to reducing the difficulty of removing components for filtering light signals for imaging on the image sensor 2.
[0058] In the embodiments of the present application, the annular shape can be a circular ring or a square ring.
[0059] In some embodiments of the present application, as shown in Figure 2 and Figure 4 The wavelength range of the light signal allowed to pass through the first identification area 1021 is 404-472 nm, the wavelength range of the light signal allowed to pass through the second identification area 1022 is 504-574 nm, the wavelength range of the light signal allowed to pass through the third identification area 1023 is 642-676 nm, and the wavelength range of the light signal allowed to pass through the fourth identification area 1024 is 744-778 nm.
[0060] It can be understood that the above-mentioned value range covers the part of visible light that is easy to affect the imaging effect, and through the filtering effect of the first identification area 1021, the second identification area 1022, the third identification area 1023 and the fourth identification area 1024, the image sensor 2 can convert the visible light in the above-mentioned wavelength range into the corresponding second electric signal, which is used as a reference interference parameter for modifying the imaging result when the first electric signal is imaged.
[0061] In some embodiments of the present application, as shown in Figure 2 The number of identification areas 102 is multiple, and the wavelength range of the light signal allowed to pass through at least two identification areas 102 in the multiple identification areas 102 is different.
[0062] It can be understood that in this way, the identification area 102 can filter more light signals of different wavelength ranges, which is conducive to the image sensor 2 to obtain information affecting the imaging effect in the first electric signal for reference.
[0063] In embodiments of the present application, the number of identification areas 102 can be 2, 3, 4 or 5, or other numbers.
[0064] In some embodiments of the present application, as shown in Figure 1 The identification area 102 has a light filter film 11.
[0065] It can be understood that the light filter film 11 can allow light signals of a specific wavelength range to pass through, so that the filtering effect of the identification area 102 on the light signal can be achieved.
[0066] In embodiments of the present application, for the case where multiple identification areas 102 exist, when the light filter film 11 is plated, a mask plate can be used to shield the part that has been plated, which is conducive to the identification area 102 allowing multiple light signals of different wavelength ranges to pass through.
[0067] In some embodiments of the present application, as shown in Figure 3As shown, the image sensor 2 includes a light sensing part 21 and a light filtering part 22, the light filtering part 22 is located between the filter 1 and the light sensing part 21, and the light filtering part 22 has a gap 2201 configured to pass the light signal through the identification area 102.
[0068] It can be understood that the light filtering part 22 can filter the light signal passing through the filter 1, so that the light sensing part 21 can only receive light of a specific color. When the light sensing part 21 is matched, it can form a corresponding first electric signal carrying image information of the light signal passing through the filter 1, so as to form an image with complete colors. The gap 2201 is located
[0069] In the embodiment of the present application, the light sensing part 21 can include a plurality of photodiodes.
[0070] In the embodiment of the present application, the light filtering part 22 can be a transparent structure.
[0071] In some embodiments of the present application, as shown in Figure 2 and Figure 3 As shown, the identification area 102 is in the orthographic projection of the light sensing part 21 and coincides with the gap 2201.
[0072] It can be understood that in this way, the light signal passing through the identification area 102 falls on a relatively fixed position of the light sensing part 21, so that the corresponding position of the light sensing part 21 can be set to generate a corresponding second electric signal.
[0073] In some embodiments of the present application, as shown in Figure 2 The identification area 102 is located in the imaging area 101.
[0074] It can be understood that the proportion of the identification area 102 to the filter 1 is relatively small, and arranging the identification area 102 in the imaging area 101 has little effect on the imaging result and is difficult for the human eye to detect. At the same time, such arrangement can improve the compactness of the arrangement of the identification area 102 and the imaging area 101, and reduce the volume of the filter 1.
[0075] The second aspect of the present application provides an electronic device including the camera module of the above-mentioned embodiments.
[0076] It can be understood that since the camera module of the above-mentioned embodiments is used, the same technical effects as the above-mentioned embodiments are achieved, which will not be described here.
[0077] In the embodiment of the present application, the electronic device can be a smart phone, a tablet computer, a notebook computer and the like.
[0078] In this application, the terms "first" and "second" are used only for descriptive purposes and not to connote or imply relative importance. The term "plurality" refers to two or more, unless otherwise expressly specified.
[0079] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope of the application being indicated by the following claims.
[0080] It is to be understood that the application is not limited to the precise details of construction and the above-described and illustrated exact construction, and that various modifications and changes can be applied to the application without departing from the scope thereof or sacrificing any of its advantages. The scope of the application is accordingly indicated by the following claims, rather than the foregoing description.
Claims
1. A camera module, comprising: The camera module comprises a filter (1) and an image sensor (2), wherein, The filter (1) has an imaging area (101) and an identification area (102), the wavelength range of the light signal passing through the imaging area (101) is different from the wavelength range of the light signal passing through the identification area (102); The image sensor (2) is configured to convert the light signal from the imaging area (101) into a first electric signal, and convert the light signal from the identification area (102) into a second electric signal.
2. The camera module of claim 1, wherein, The area of the identification area (102) is smaller than the area of the imaging area (101).
3. The camera module of claim 1, wherein, The identification area (102) comprises a first identification area (1021), a second identification area (1022), a third identification area (1023) and a fourth identification area (1024), wherein, The first identification area (1021), the second identification area (1022), the third identification area (1023) and the fourth identification area (1024) are sequentially and spaced arranged on the filter (1), Or, The second identification area (1022) extends along the circumference of the first identification area (1021) in a ring shape, the third identification area (1023) extends along the circumference of the second identification area (1022) in a ring shape, and the fourth identification area (1024) extends along the circumference of the third identification area (1023) in a ring shape.
4. The camera module of claim 3, wherein, The wavelength range of the light signal passing through the first identification area (1021) is 404-472 nm, the wavelength range of the light signal passing through the second identification area (1022) is 504-574 nm, the wavelength range of the light signal passing through the third identification area (1023) is 642-676 nm, and the wavelength range of the light signal passing through the fourth identification area (1024) is 744-778 nm.
5. The camera module of claim 1, wherein, The number of the identification areas (102) is multiple, and the wavelength range of the light signal passing through at least two of the multiple identification areas (102) is different.
6. The camera module of claim 1, wherein, The identification area (102) has a light filtering film (11).
7. The camera module of claim 1, wherein, The image sensor (2) comprises a light sensing part (21) and a light filtering part (22), the light filtering part (22) is located between the filter (1) and the light sensing part (21), and the light filtering part (22) has a gap (2201) configured to pass the light signal passing through the identification area (102).
8. The camera module of claim 7, wherein, The orthographic projection of the light sensing part (21) coincides with the gap (2201).
9. The camera module of claim 1, wherein, The identification area (102) is located within the imaging area (101).
10. An electronic device, comprising: The electronic device comprises the camera module according to any one of claims 1-9.