Narrow bandwidth multispectral camera

Abstract

The utility model relates to a narrow-bandwidth multispectral camera, which is provided with a camera main body (10), and the camera main body (10) sequentially comprises a camera mainboard (1), a camera CMOS (complementary metal oxide semiconductor) assembly (2), a camera lens (3) and a filter (4) in the direction of an optical axis (P).

Description

Technical Field

[0001] The present invention relates to the field of remote sensing technology, specifically to the field of remote sensing technology for obtaining accurate spectral data for agriculture, forestry, water resources and environmental protection, and more specifically to a narrow bandwidth multispectral camera. Background Art

[0002] A multispectral camera is an imaging device that can simultaneously obtain spectral information in multiple bands. Its basic components include an optical system, a spectral beam splitter, a sensor, and a data processing unit. The optical system is used to collect light in the environment, the spectral beam splitter separates light of different wavelengths, the sensor is used to convert optical signals into electrical signals, and the data processing unit is responsible for integrating, processing, and outputting the final image. Multispectral cameras are widely used in agriculture, environmental monitoring, geological exploration, medical imaging, and other fields. By acquiring multi-band spectral information, multispectral cameras can provide more comprehensive and accurate image data, helping users to gain a deeper understanding of the nature and state of the target object. In addition, the combination of multispectral cameras and drones has a wide range of important applications in the field of remote sensing. After installing multispectral cameras on drones, they can provide more comprehensive and higher-resolution surface information, thus playing an important role in agriculture, environmental monitoring, geological exploration, and other fields.

[0003] Multispectral cameras can be divided into full-band multispectral cameras and narrow-bandwidth multispectral cameras according to the number and range of their bands. Full-band multispectral cameras can cover a wide range of bands and provide comprehensive spectral information, but their cost and data processing complexity are relatively high. Narrow-bandwidth multispectral cameras focus on specific bands, have higher spectral resolution, and are suitable for specific application scenarios.

[0004] The basic structure and composition of the narrow-bandwidth multispectral camera are similar to those of an ordinary camera, including an optical system, a spectral beam splitter, a sensor, and a data processing unit.

[0005] Narrow bandwidth multispectral cameras have high spectral resolution and can provide detailed spectral information within a specific band. Due to their precise band selection, narrow bandwidth multispectral cameras are suitable for professional fields that require specific band information. By accurately selecting specific bands, spectral cross-interference between different bands can be reduced and data accuracy can be improved. In addition, since narrow bandwidth multispectral cameras can only sense light in specific bands, the band information they provide is relatively limited compared to full-spectrum multispectral cameras. Due to their focus on specific bands, narrow bandwidth multispectral cameras have poor flexibility in adapting to different application scenarios, and multiple cameras may be required to cope with multiple needs. In particular, due to the specificity of the spectrum and band of narrow bandwidth multispectral cameras, there are only two ways to deal with different spectra and bands: one is to replace the camera corresponding to different spectra and bands, and the other is to replace the filters of different bands. Utility Model Content

[0006] Technical problems to be solved by the utility model

[0007] In traditional multispectral cameras, adjusting the spectral bandwidth and band usually requires disassembling the camera and replacing the filter, which is not only cumbersome but also easily causes reduced accuracy or damage to the equipment.

[0008] In view of the above technical problems existing in the prior art, the utility model provides a narrow-bandwidth multi-spectral camera that can cope with different spectra and bands through simple operation.

[0009] Technical solutions to the above technical problems

[0010] The utility model adopts the following technical solutions to solve the above technical problems.

[0011] One of the technical solutions of the utility model relates to a narrow bandwidth multispectral camera, which has a camera body 10, and the camera body includes: a camera main board 1, a camera CMOS component 2, a camera lens 3 and a filter 4 in sequence in the optical axis direction.

[0012] A second technical solution of the present invention relates to the above-mentioned narrow-bandwidth multi-spectral camera, wherein the filter 4 is a detachable filter.

[0013] The third technical solution of the present invention relates to the above-mentioned narrow-bandwidth multi-spectral camera, wherein the filter 4 is a plurality of filters adapted to different spectra and bands.

[0014] Technical effects of the utility model

[0015] The utility model provides a narrow-band multi-spectral camera, which has a camera body 10, and the camera body includes in sequence in the optical axis direction: a camera main board 1, a camera CMOS component 2, a camera lens 3, and a filter 4. Through the above technical solution, the narrow-band multi-spectral camera in the utility model can easily replace the filter component to meet the shooting needs of different spectra and bands without disassembling the camera, thereby achieving the technical effect of meeting the shooting needs of different spectra and bands with simple operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A stereogram of a narrow bandwidth multi-spectral camera of the present invention;

[0017] Figure 2 It is a left view of the narrow bandwidth multi-spectral camera of the utility model;

[0018] Figure 3 It is a front view of the narrow bandwidth multi-spectral camera of the utility model;

[0019] Figure 4 It is a right view of the narrow bandwidth multi-spectral camera of the utility model;

[0020] Figure 5 It is a rear view of the narrow bandwidth multi-spectral camera of the present invention.

[0021] Explanation of symbols

[0022] 10: Camera body

[0023] 1: Camera main board

[0024] 2: Camera CMOS component

[0025] 3: Camera lens

[0026] 4: Filters

[0027] P: Optical axis DETAILED DESCRIPTION

[0028] In the existing narrow-bandwidth multispectral camera, the camera main body, CMOS components, filters and camera lenses are arranged along the optical axis. In such a structure, the camera lens is located at the outermost side, and such a setting can make the camera lens more sensitive to the control of the light source. However, such a design makes the camera only adaptable to the shooting needs of specific spectra and bands. If you need to shoot for different spectra and bands, you need to replace the camera with other filters, or replace the filter in the camera body. However, it is well known that the narrow-bandwidth multispectral camera is a very precise instrument that requires professional technicians to install and debug. If it is frequently disassembled, it will inevitably cause it to be easily damaged or the accuracy will deteriorate. In addition, in some scenarios, there is no operating space for disassembling the camera and replacing the filter. As a result, the camera is almost unable to adapt to the shooting needs of multi-spectra and bands.

[0029] In view of the above-mentioned technical problems, the present invention proposes the following technical solutions.

[0030] like Figures 1 to 5 As shown, the utility model relates to a narrow bandwidth multispectral camera, which has a camera body 10, and the camera body 10 includes: a camera main board 1, a camera CMOS component 2, a camera lens 3 and a filter 4 in sequence in the direction of the optical axis P.

[0031] In the narrow bandwidth multi-spectral camera of the present invention, the filter 4 is arranged at the outermost side in the direction of the optical axis P of the camera body 10. In this way, when responding to shooting requirements of different spectra and bands, only the filter 4 needs to be replaced without disassembling the camera, and no disassembly operation is performed on the camera main board 1, CMOS component 2, lens 3 and other precision components in the camera body 10, which prevents these precision components from being reduced in accuracy or even damaged due to disassembly of the camera.

[0032] Therefore, in the narrow bandwidth multispectral camera of the utility model, the filter 4 is a detachable filter. The filter 4 is designed to be detachably mounted on the outside of the camera lens 3. As long as the detachable structure can realize the free and convenient installation and removal of the filter 4, various structures known in the art can be used. For example, the filter 4 is installed on the outside of the lens 3 in an inserted form, and the filter 4 can be removed by pulling it out; the filter 4 can also be installed on the outside of the lens 3 by rotating and screwing it along the thread set on the outside of the lens 3, and the filter 4 can be removed by screwing it out in the opposite direction, etc. These detachable installation methods are all well-known and commonly used installation methods in the art. Those skilled in the art can obviously design them according to common knowledge or existing technologies, and they will not be repeated here.

[0033] In addition, in the narrow bandwidth multi-spectral camera of the present invention, the filter 4 is a plurality of filters adapted to different spectra and bands. The number of filters 4 and the corresponding spectra and bands can be selected as required, preferably having at least red edge (REDDI), near infrared (NIR), blue light (BLUE), green light (GREEN) and other bands. These filters can be appropriately adjusted according to actual shooting requirements.

[0034] According to the above technical solution, the narrow bandwidth multi-spectral camera of the utility model can replace the filter through simple operation without disassembling the camera, so as to cope with different spectra and bands. In this way, not only does it not need to carry multiple cameras to cope with different spectra and bands, thereby reducing the burden of work, but also it does not need to disassemble the camera to replace the filter in order to cope with different spectra and bands, thereby reducing the risk of reduced camera accuracy and damage.

[0035] It should be noted that in the art, the structure of narrow-bandwidth multispectral cameras is generally not easily changed. Since narrow-bandwidth multispectral cameras usually adopt the structure of civilian cameras, the stability and practicality of the structure have been verified many times. Therefore, those skilled in the art usually do not think of changing the mechanism of the camera. In addition, the camera body of the camera is usually purchased from a civilian camera manufacturer. Therefore, those skilled in the art are unlikely to think of changing the structure of the camera. The designer of the present utility model has a breakthrough idea of ​​starting from the structure of the camera body, and by swapping the positions of the filters and lenses in the camera body, a technical effect of using a camera to cope with multi-spectral and multi-band shooting needs by simply changing the filter is achieved. Such a technical effect was difficult to be realized by those skilled in the art before the emergence of the present utility model, and it is obviously a technical effect that cannot be thought of from the prior art.

[0036] In addition, the narrow bandwidth multi-spectral camera of the utility model can also be installed on a drone to make a drone equipped with a narrow bandwidth multi-spectral camera. The drone can meet the shooting requirements of specific spectra and bands. Since the drone has a narrow bandwidth multi-spectral camera, it can shoot images with high resolution. In addition, since the narrow bandwidth multi-spectral camera of the utility model can meet the shooting requirements of multi-spectrum and multi-band by simply replacing the filter, this also makes the narrow bandwidth multi-spectral camera of the utility model flexible and adaptable.

[0037] Industrial Applicability

[0038] The narrow-bandwidth multispectral camera of the present invention has obvious advantages in flexibility, high efficiency, cost-effectiveness, technical advantages, excellent performance and convenient operation, and these characteristics make it have broad application prospects in many fields.

Claims

1. A narrow bandwidth multispectral camera, characterized in that: The camera has a camera body (10) which is arranged in the direction of the optical axis. The above includes: a camera main board (1), a camera CMOS component (2), a camera lens (3) and a filter (4), The filter (4) is a detachable filter and is a plurality of filters adapted to different spectra and wave bands.

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