CN216217121U - Lens module and imaging device - Google Patents
Lens module and imaging device Download PDFInfo
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- CN216217121U CN216217121U CN202122443859.8U CN202122443859U CN216217121U CN 216217121 U CN216217121 U CN 216217121U CN 202122443859 U CN202122443859 U CN 202122443859U CN 216217121 U CN216217121 U CN 216217121U
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Abstract
The utility model is suitable for the technical field of camera shooting, and provides a lens module and an imaging device. The lens module includes: the lens is used for acquiring imaging light; the first image sensor is positioned behind the lens along the light incoming direction and used for receiving input light passing through the lens so as to convert the input light into an image; the second image sensor is arranged on one side of the input light and used for receiving the input light so as to convert the input light into an image; and the light splitter is positioned between the lens and the first image sensor and used for distributing the input light to the first image sensor and the second image sensor for imaging respectively. In the utility model, the definition of the imaging picture of the lens module is good, and the lens module can have higher night scene image quality under the night scene environment, thereby better meeting the use requirement.
Description
Technical Field
The utility model belongs to the technical field of camera shooting, and particularly relates to a lens module and an imaging device.
Background
In the prior art, a lens module structure with a single lens corresponding to a single color image sensor is generally used to capture a color image or a processed black and white image. In actual shooting, especially in a low-light environment, the structural arrangement has the defects of high shooting definition loss and reduced image quality.
SUMMERY OF THE UTILITY MODEL
In view of this, embodiments of the present invention provide a lens module and an imaging device to solve the problems of high loss of shooting definition and reduced image quality.
In order to solve the above problems, the technical solution of the embodiment of the present invention is implemented as follows:
a lens module, comprising: the lens is used for acquiring imaging light; the first image sensor is positioned behind the lens along the direction of light incoming, and is used for receiving input light passing through the lens so as to convert the input light into an image; the second image sensor is arranged on one side of the input light and used for receiving the input light so as to convert the input light into an image; the beam splitter is positioned between the lens and the first image sensor and used for distributing the input light to the first image sensor and the second image sensor for imaging respectively; the first image sensor is a black-and-white image sensor, the second image sensor is a color image sensor, or the first image sensor is a color image sensor, and the second image sensor is a black-and-white image sensor.
In some embodiments, the beam splitter splits the input light into a first light and a second light, the first light being transmitted to the first image sensor and the second light being transmitted to the second image sensor.
In some embodiments, the propagation direction of the second light ray is perpendicular to the propagation direction of the input light ray.
In some embodiments, the lens module further comprises a filter positioned behind the lens.
In some embodiments, the optical filter is disposed on the input light line.
In some embodiments, the filter is disposed on the first light line or the second light line.
In some embodiments, the filter is disposed on both the first light ray and the second light ray, and the filter on the first light ray and the filter on the second light ray are configured in the same or different manners.
In some embodiments, the beam splitter is a beam splitting prism.
In some embodiments, the beam splitter includes a body and a coating layer disposed on the body, and the coating layer is stacked on a side of the body facing the lens and/or a side facing the first image sensor.
The embodiment of the utility model also provides an imaging device which comprises the lens module.
The embodiment of the utility model provides a lens module, which comprises a lens, a first image sensor, a second image sensor and a light splitter. The first image sensor is located behind the lens, the second image sensor is arranged on one side of the input light passing through the lens, and the light splitter is arranged between the lens and the first image sensor and used for distributing the input light to the first image sensor and the second image sensor to form images respectively. By the arrangement, imaging is performed by arranging the color image sensor and the black and white image sensor, shot pictures are completely overlapped, and the visual angle of the pictures is improved. Moreover, images formed by the two image sensors are mutually compensated, so that the image definition can be improved, and the imaging requirements of reducing image noise and improving the night scene image quality in a low-light environment can be met.
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 those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a first structural schematic diagram of a lens module according to an embodiment of the utility model;
fig. 2 is a schematic view of a second structure of a lens module according to an embodiment of the utility model.
Description of reference numerals:
11. a lens; 12. a first image sensor; 13. a second image sensor; 14. a light splitter; 141. a body; 142. coating a film layer; 15. inputting light; 16. a first light ray; 17. a second light ray; 18. an optical filter.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various possible combinations of the specific features of the utility model will not be described further.
It should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present invention are only relative to each other or are referred to the normal use state of the product, and should not be considered as limiting.
As shown in fig. 1 and fig. 2, a lens module according to an embodiment of the present invention can be applied to a panoramic camera and a motion camera. The lens module includes a lens 11, a first image sensor 12, a second image sensor 13, and a beam splitter 14. The lens 11 is used for acquiring imaging light, and a first image sensor 12 is arranged behind the lens 11 along the direction of light incoming, wherein the first image sensor 12 is used for receiving input light 15 passing through the lens 11 and then converting the input light 15 into an image. The second image sensor 13 is disposed on a side of the input light 15, and the second image sensor 13 is also used for receiving the input light 15 and converting the input light 15 into an image. A beam splitter 14 is arranged between the lens 11 and the first image sensor 12, the beam splitter 14 being configured to split the input light 15 onto the first image sensor 12 and the second image sensor 13 for imaging, respectively. Specifically, in the embodiment of the present invention, the first image sensor 12 is a black-and-white image sensor and the second image sensor 13 is a color image sensor, or the first image sensor 12 is a color image sensor and the second image sensor 13 is a black-and-white image sensor. Thus, the lens 11 module includes both a monochrome image sensor and a color image sensor, and is used for imaging. Therefore, through the two image sensors, the black-and-white image sensor can be selected to acquire more detailed information in the test scene in the daytime scene, the image definition information can be reduced in the actual image debugging, and the black-and-white image sensor greatly reduces the image noise and improves the night scene image quality in the night scene use.
Specifically, in the embodiment of the present invention, in the lens 11 module with such a structure, during the specific shooting, a normal light or a strong light scene enters the lens 11, passes through the beam splitter 14, so that the luminous flux enters the first image sensor 12 (or the second image sensor 13) in a certain proportion to store the scene detail information, a larger degree of the luminous flux in the part of the input light 15 is retained, and the second image sensor 13 (or the first image sensor 12) can be matched to compensate the picture detail content, so as to improve the picture definition. Meanwhile, the other part enters the second image sensor 13 (or the first image sensor 12 is used for normal imaging, while in a weak light scene, the luminous flux is distributed the same as that in a normal light or a strong light scene, and because the luminous flux is smaller in the weak light condition, the luminance information which can be kept to a great extent can generate less noise interference when the image is decoded, so that the night scene shooting is adapted, and the night scene image quality is improved.
As shown in fig. 1 and 2, in some embodiments, a beam splitter 14 is used for distribution of input light rays 15 and conversion of propagation direction. The beam splitter 14 may be disposed on the transmission path of the input light ray 15 perpendicular to the propagation direction of the input light ray 15, and a corresponding optical path conversion structure (e.g., a slope) may be disposed on the beam splitter 14 to obtain a desired light ray. In the embodiment of the present invention, the beam splitter 14 is disposed obliquely with respect to the input light 15 to split the input light 15 into a first light 16 and a second light 17, the first light 16 is transmitted to the first image sensor 12, and the second light 17 is transmitted to the second image sensor 13. By the arrangement, the surface of the optical splitter 14 is flat, and an optical path conversion structure is not required to be additionally arranged on the optical splitter 14, so that the production and the manufacture are convenient.
As shown in fig. 1 and 2, the propagation direction of the second light ray 17 is perpendicular to the propagation direction of the input light ray 15 according to the use requirement. This is arranged to obtain the required light on the second image sensor 13 to meet the imaging requirements.
As shown in fig. 1 and 2, in some embodiments, the lens 11 module further includes a filter 18, and the filter 18 is located behind the lens 11. By arranging the optical filter 18, after the input light 15 passing through the lens 11 enters the optical filter 18, the light of a required radiation wave band can be selected by the processing of the optical filter 18, so as to meet the imaging requirement. Alternatively, the filter 18 is a filter, and may be a glass sheet, a gelatin sheet, a thin film sheet, or the like.
As shown in fig. 1, in some embodiments, a filter 18 may be positioned over the input light 15. In this way, the filter process for the first image sensor 12 and the second image sensor 13 is realized by one filter 18.
As shown in fig. 2, in some embodiments, a filter 18 may also be disposed on first light ray 16 or second light ray 17. In this way, the position at which the filter 18 is disposed can be selected according to the performance requirements of the product, thereby meeting different imaging requirements. Specifically, it is generally adopted to provide the filter 18 on the light corresponding to the color image sensor according to the product design requirements.
As shown in fig. 2, in the embodiment of the present invention, the filters 18 are disposed on both the first light beam 16 and the second light beam 17, and the configuration of the filter 18 on the first light beam 16 is the same as or different from that of the filter 18 on the second light beam 17. That is, in the light incident direction of the first image sensor 12 and the second image sensor 13, the filters 18 are respectively used for filtering the incident light, and the specification parameters of the filter 18 on the first light 16 and the filter 18 on the second light 17 may be the same configuration (such as the radiation band of the light) or different configurations, and are set according to the brand and the image taste of the product, so that the setting flexibility is good.
In some embodiments, the beam splitter 14 may be provided as a beam splitting prism. The input light ray 15 can be turned to split into a desired first light ray 16 and a second light ray 17.
As shown in fig. 1 and 2, in some embodiments, the optical splitter 14 includes a body 141 and a coating layer 142 disposed on the body 141, and the coating layer 142 is stacked on a surface of the body 141 facing the lens 11 and/or a surface facing the first image sensor 12. So arranged, the input light ray 15 enters the beam splitting prism where it is turned and split into a first light ray 16 and a second light ray 17, the first light ray 16 remaining in the same direction as the input light ray 15, and the second light ray 17 traveling in a direction perpendicular to the input light ray 15. Meanwhile, after the input light 15 is processed by the coating layer 142, the distribution of the luminous fluxes of the first light 16 and the second light 17 can be realized, for example, the transmittance of the beam splitter prism is 50%, and the reflectivity of the beam splitter prism is 50%, so that the 1:1 ratio of the luminous fluxes between the two image sensors can be realized, and the imaging requirement can be met.
The lens 11 module provided by the embodiment of the utility model images by arranging the two image sensors, so that the shot pictures are completely overlapped, and the visual angle of the pictures is improved. Moreover, images formed by the two image sensors are mutually compensated, so that the image definition can be improved, and the imaging requirements of reducing image noise and improving the night scene image quality in a low-light environment can be met. In addition, the lens 11 module with the structure has low cost and reduces the use cost.
The embodiment of the utility model also provides an imaging device which comprises the lens 11 module. The lens 11 module has good definition of imaging pictures, and can also have higher night scene image quality in a night scene environment, thereby improving the shooting reliability of the imaging device and better meeting the use requirements of users.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A lens module, comprising:
the lens is used for acquiring imaging light;
the first image sensor is positioned behind the lens along the direction of light incoming, and is used for receiving input light passing through the lens so as to convert the input light into an image;
the second image sensor is arranged on one side of the input light and used for receiving the input light so as to convert the input light into an image;
the beam splitter is positioned between the lens and the first image sensor and used for distributing the input light to the first image sensor and the second image sensor for imaging respectively;
the first image sensor is a black-and-white image sensor, the second image sensor is a color image sensor, or the first image sensor is a color image sensor, and the second image sensor is a black-and-white image sensor.
2. The lens module as recited in claim 1, wherein the beam splitter splits the input light into a first light and a second light, the first light being transmitted to the first image sensor, the second light being transmitted to the second image sensor.
3. The lens module as recited in claim 2, wherein the propagation direction of the second light ray is perpendicular to the propagation direction of the input light ray.
4. The lens module as recited in claim 2, wherein the lens module further comprises a filter, the filter being located behind the lens.
5. The lens module as recited in claim 4, wherein the optical filter is disposed on the input light line.
6. The lens module as recited in claim 4, wherein the filter is disposed on the first light ray or the second light ray.
7. The lens module as claimed in claim 4, wherein the filters are disposed on both the first light beam and the second light beam, and the filters disposed on the first light beam and the filters disposed on the second light beam are configured in the same or different manners.
8. The lens module as claimed in any one of claims 1 to 7, wherein the beam splitter is a beam splitter prism.
9. The lens module as claimed in any one of claims 1 to 7, wherein the beam splitter includes a body and a coating layer disposed on the body, the coating layer being disposed on a side of the body facing the lens and/or a side facing the first image sensor.
10. An imaging apparatus comprising the lens module according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122443859.8U CN216217121U (en) | 2021-10-11 | 2021-10-11 | Lens module and imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122443859.8U CN216217121U (en) | 2021-10-11 | 2021-10-11 | Lens module and imaging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216217121U true CN216217121U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122443859.8U Active CN216217121U (en) | 2021-10-11 | 2021-10-11 | Lens module and imaging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216217121U (en) |
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2021
- 2021-10-11 CN CN202122443859.8U patent/CN216217121U/en active Active
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