Optical assembly for linkage of distance measurement and multispectral imaging
By designing a linkage optical component that integrates ranging and multispectral imaging, the problems of high data alignment cost and limited accuracy in multispectral imaging and ranging systems are solved, achieving synchronous data acquisition and system flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN LUBANG TECH CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-05-05
AI Technical Summary
Existing multispectral imaging and ranging systems acquire data independently, resulting in high data alignment costs and limited accuracy.
Design an optical component for range measurement and multispectral imaging linkage, including a lidar detector, a CCD, a laser emitter, and first and second B/S beam splitters. The optical design enables synchronous acquisition of two data streams, and the data is processed using a tunable filter and a linkage controller.
It enables synchronous acquisition of two data streams, improves data response consistency and operational convenience, reduces the cost and time accuracy requirements of data alignment, and enhances the system's flexibility and maintainability.
Smart Images
Figure CN224203424U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical technology, and in particular to an optical component for the linkage of ranging and multispectral imaging. Background Technology
[0002] Multispectral imaging utilizes spectral splitting techniques to separate the electromagnetic radiation reflected or emitted by an object into multiple discrete and specifically selected bands. Intensity information for each band is then recorded by a detector, ultimately forming a three-dimensional data cube containing spatial information and limited but crucial spectral information. This allows it to reveal spectral features of an object that are invisible in standard RGB imaging, thus playing a vital role in numerous scientific and industrial fields. For example, with the rise of machine vision, multispectral imaging can be used for monitoring the posture and health status of living organisms.
[0003] In certain specific scenarios, combining multispectral imaging and ranging can achieve energy savings and effective data filtering through cross-verification of the two data streams. However, current methods for acquiring the aforementioned two data streams mostly involve two independent systems collecting data separately. When performing correlation analysis on the data, data alignment using information such as timestamps is still required, resulting in excessively high costs for coordinating the two data streams and limited accuracy in time alignment. Utility Model Content
[0004] The purpose of this utility model is to disclose an optical component for the linkage of ranging and multispectral imaging, laying the foundation for the integration of multispectral imaging and ranging into the same system.
[0005] To achieve the above objectives, the optical components for range measurement and multispectral imaging linkage disclosed in this invention include: a lidar detector, a CCD for imaging external targets, a laser emitter, a first B / S beam splitter, and a second B / S beam splitter.
[0006] The second B / S beam splitter is located directly above the first B / S beam splitter, and the two beam splitting surfaces corresponding to the two beam splitters are parallel or orthogonal.
[0007] The laser emitter is located to the left of the first B / S beam splitter, and the optical axis of the laser emitter forms a 45-degree angle with the beam splitting surface of the first B / S beam splitter.
[0008] The lidar detector and the CCD are located in the transmission direction and the reflection direction of the second B / S beam splitter, respectively.
[0009] A tunable filter that allows only specified wavelengths of light to pass through is deployed between the CCD and the second B / S beam splitter.
[0010] Wherein, the detection wavelength of the lidar detector matches the wavelength of the laser emitter; a lens that is coaxial with the laser emitter and the first B / S beam splitter and can be focused is reserved on the right side of the first B / S beam splitter; the optical paths between the first B / S beam splitter and the laser emitter, the CCD, and the lidar detector are equal, so as to synchronously adjust the photosensitive surfaces of the CCD and the lidar detector to the focal plane of the lens during use; the CCD, the laser emitter, the tunable filter, and the radar detector are respectively provided with communication interfaces for connecting to a linkage controller.
[0011] Preferably, the component of the present invention further includes a device connected to the linkage controller to achieve external supplementary lighting.
[0012] Optionally, the CCD uses a CCD for visible light imaging, and the laser emitter uses an infrared light source.
[0013] The present invention has the following beneficial effects:
[0014] 1. The optical paths between the first B / S beam splitter and the laser emitter, the CCD, and the lidar detector are equal. During use, by adjusting the focus of the lens reserved on the right side of the first B / S beam splitter and coaxial with the laser emitter and the first B / S beam splitter, the photosensitive surfaces of the CCD and the lidar detector can be synchronously adjusted to the focal plane of the lens at one time; while improving the operation convenience, it physically ensures the response consistency of the CCD and the lidar detector in the scenario of synchronously collecting two-channel data required for linkage control.
[0015] 2. The user can configure and replace the lens according to needs, which is convenient for maintenance and improves flexibility.
[0016] Next, the present invention will be described in further detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:
[0018] Figure 1 is a structural and optical path schematic diagram of an optical component for ranging and multi-spectral imaging linkage disclosed in an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] The following will describe the embodiments of the present invention in detail with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.
[0020] Embodiment 1
[0021] This embodiment discloses an optical component for combining ranging and multispectral imaging, such as... Figure 1 As shown, it includes: a lidar detector 4, a CCD 5 for imaging external targets, a laser emitter 3, a first beam splitter 1, and a second beam splitter 2. In this field, a beam splitter is also referred to as a BS beam splitter, which will not be described in detail hereafter.
[0022] The second B / S beam splitter is located directly above the first B / S beam splitter, and the two beam splitting surfaces corresponding to the two beam splitters are parallel or orthogonal. Figure 1 The diagram shows the parallel state of the two beam splitting surfaces. If they are orthogonal, the reflected light path of the second B / S beam splitter will focus to the right. Both methods can be matched by the user according to the spatial deployment requirements in the application scenario.
[0023] like Figure 1 As shown, the laser emitter is located to the left of the first B / S beam splitter, and the optical axis of the laser emitter forms a 45-degree angle with the beam splitting surface of the first B / S beam splitter; the lidar detector and the CCD are located in the transmission direction and the reflection direction of the second B / S beam splitter, respectively; a tunable filter 6 that only allows a specified wavelength spectrum to pass through is deployed between the CCD and the second B / S beam splitter.
[0024] In this embodiment, the detection wavelength of the lidar detector matches the wavelength of the laser emitter; a lens 7, which is coaxial with the laser emitter and the first B / S beam splitter and can be focused, is reserved on the right side of the first B / S beam splitter; the optical path between the first B / S beam splitter (usually referring to its beam splitting surface, which is common knowledge in the field, and similar descriptions will not be repeated) and the laser emitter, CCD and lidar detector are equal, so that the photosensitive surfaces of the CCD and lidar detector can be synchronously adjusted to the focal plane of the lens during use; the CCD, laser emitter, tunable filter and lidar detector are each reserved with a communication interface for connecting to the linkage controller.
[0025] In this embodiment, the tunable filter only allows the spectrum of a specific wavelength to pass through, while blocking the spectrum of other wavelengths; thus, the CCD can image a specific spectrum, such as from 400-700nm during tuning. If a tuning step size of 1nm is used, 301 spectral images can be formed, thereby obtaining both two-dimensional image information and spectral information of the image.
[0026] Preferably, the CCD is a visible light imaging CCD, and the laser emitter is an infrared light source; furthermore, the component of this utility model also includes a device connected to a linkage controller to realize external supplementary lighting.
[0027] Based on the components of this embodiment, the specific linkage control strategy is directly related to the subsequent processing logic of the two-way collected data and can be flexibly set according to different usage scenarios. For example: The reasonable distance of the detected target can be calibrated in advance. When an alarm is generated based on the distance obtained by laser ranging, the type of the alarm can be identified through the multi-spectral imaging information. Or: From the video images of the CCD, key frames can be automatically extracted according to the distance of each frame image. During the working process, when only single-way data information is required, the associated devices on the other way of data can be switched to the sleep or hibernation state to save power consumption.
[0028] The utility model has the following beneficial effects:
[0029] 1. The optical paths between the first B / S beam splitter, the laser emitter, the CCD and the lidar detector are equal. During use, by adjusting the focus of the lens that is coaxial with the laser emitter and the first B / S beam splitter reserved on the right side of the first B / S beam splitter, the photosensitive surfaces of the CCD and the lidar detector can be synchronously adjusted to the focal plane of the lens at one time; while improving the operation convenience, it physically ensures the response consistency of the CCD and the lidar detector in the scenario of synchronously collecting two-way data required for linkage control.
[0030] 2. The user can configure and replace the lens according to needs, which is convenient for maintenance and improves flexibility.
[0031] The above are only the preferred embodiments of the utility model and are not used to limit the utility model. For those skilled in the art, the utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included within the protection scope of the utility model.
Claims
1. An optical component for combined ranging and multispectral imaging, characterized in that, include: A lidar detector, a CCD for imaging external targets, a laser emitter, a first beam splitter, and a second beam splitter; The second B / S beam splitter is located directly above the first B / S beam splitter, and the two beam splitting surfaces corresponding to the two beam splitters are parallel or orthogonal. The laser emitter is located to the left of the first B / S beam splitter, and the optical axis of the laser emitter forms a 45-degree angle with the beam splitting surface of the first B / S beam splitter. The lidar detector and the CCD are located in the transmission direction and the reflection direction of the second B / S beam splitter, respectively. A tunable filter that allows only specified wavelengths of light to pass through is deployed between the CCD and the second B / S beam splitter. The detection wavelength of the lidar detector is matched with the wavelength of the laser emitter; a lens that is coaxial with the laser emitter and the first B / S beam splitter and can be focused is reserved on the right side of the first B / S beam splitter; the optical path between the first B / S beam splitter, the laser emitter, the CCD, and the lidar detector is equal, so that the photosensitive surfaces of the CCD and the lidar detector are synchronously adjusted to the focal plane of the lens during use; the CCD, the laser emitter, the tunable filter, and the lidar detector are each reserved with a communication interface for connecting to a linkage controller.
2. The optical component for range measurement and multispectral imaging linkage according to claim 1, characterized in that, It also includes a device connected to the linkage controller to provide supplemental lighting.
3. The optical component for range measurement and multispectral imaging linkage according to claim 1 or 2, characterized in that, The CCD is a visible light imaging CCD, and the laser emitter is an infrared light source.