技术领域Technical field
本发明涉及光源设备，具体涉及一种多光谱海水广角体散射函数测量用光源。The invention relates to light source equipment, in particular to a light source for measuring multispectral seawater wide-angle body scattering function.
背景技术Background technique
体散射函数(volume scattering function，VSF，β(λ,φ))是描述光在水体中某一散射体上散射光的角度分布的重要固有光学参数，是波长(λ)及散射角(φ)的函数，是水色遥感、水下军事目标跟踪及生态系统建模等光学海洋学领域亟需的技术，目前广角体散射函数在线/剖面测量技术基本为单一波长，相对于体散射函数角度分布的研究而言，体散射函数的波长分布特征的研究极少，相关数据极为匮乏，这主要归因于散射信号动态范围大、对光源及光学检测单元的技术及工艺要求较高。而多光谱、高光谱体散射特性是水色遥感、光辐射传输模型优化和完善的关键参数，可为生态系统建模、赤潮及其优势藻类的识别提供丰富的特征波长散射信息。多光谱光源的实现，一般采用白光LED或卤素灯配以机械转动的不同颜色滤光片实现，该方法结构较为简单，但输出光准直度较差、发散角较大、光利用率低，再有一种方法是采用不同颜色激光器通过单模光纤耦合输出，这种方法光输出发散角可控，但体积大且成本高，对于水下剖面使用且角度分辨率较高、散射通量测量传感器视场角小的广角体散射函数测量技术而言，光源的准直度、发散角的精度以及光源的体积，直接决定散射测量的角度分辨率、散射信号检测可靠性、背景污染程度、定标精度及数据的可靠性。The volume scattering function (VSF, β(λ,φ)) is an important intrinsic optical parameter that describes the angular distribution of light scattered on a scattering body in the water body. It is the wavelength (λ) and scattering angle (φ) is an urgently needed technology in the fields of optical oceanography such as water color remote sensing, underwater military target tracking and ecosystem modeling. The current online/profile measurement technology of wide-angle body scattering function is basically a single wavelength, relative to the angular distribution of the body scattering function In terms of research, there are very few studies on the wavelength distribution characteristics of the volume scattering function, and the relevant data are extremely scarce. This is mainly due to the large dynamic range of the scattering signal and the high technical and process requirements for the light source and optical detection unit. Multispectral and hyperspectral volume scattering characteristics are key parameters for the optimization and improvement of water color remote sensing and optical radiation transmission models. They can provide rich characteristic wavelength scattering information for ecosystem modeling and the identification of red tides and their dominant algae. The realization of multispectral light sources is generally achieved by using white LED or halogen lamps with mechanically rotated filters of different colors. This method has a relatively simple structure, but the output light has poor collimation, a large divergence angle, and low light utilization. Another method is to use lasers of different colors to be coupled and output through single-mode optical fibers. This method has a controllable light output divergence angle, but is large in size and high in cost. It is suitable for underwater profiles with high angular resolution and scattered flux measurement sensors. For wide-angle volume scattering function measurement technology with a small field of view, the collimation of the light source, the accuracy of the divergence angle, and the volume of the light source directly determine the angular resolution of the scattering measurement, the reliability of the scattering signal detection, the degree of background contamination, and the calibration. accuracy and data reliability.
目前国外利用多波段测量海水体散射函数成熟的是单一或不超过三个角度后向体散射的测量，上述仪器采用一个波段光源对准一个探测器实现不同角度不同波长体散射函数测量，探测器是采用大视场角结构，对光源的准直度要求不高，这一结构对于散射角度较少的体散射函数测量仪可行，但对于广角体散射函数测量仪，上述光学结构的安排无可行性。对于广角体散射函数的测量，受技术条件限制，基本为单一波长探测，近年来对单一波长的广角体散射函数测量技术，国内外均有相应的研究进展，但如需测量不同波长体散射函数，则需更换不同波段光源再进行测量，过程耗时繁琐，容易因为安装精度等问题造测量成误差但多光谱测量，同时，由于光的散射对偏振比较敏感，输出多波段光源需要处理成为非偏振光方可有效对散射光信号进行探测，上述两种结构的多波段光源设计方法在实现圆偏振或消偏振上均存在较大的难度。At present, the mature use of multi-band measurement of seawater scattering function in foreign countries is the measurement of backscattering at a single or no more than three angles. The above-mentioned instrument uses a band light source aligned with a detector to measure the body scattering function at different angles and different wavelengths. The detector It adopts a large field of view structure and does not require high collimation of the light source. This structure is feasible for volume scattering function measuring instruments with small scattering angles, but for wide-angle volume scattering function measuring instruments, the arrangement of the above optical structure is not feasible. sex. For the measurement of wide-angle body scattering function, limited by technical conditions, it is basically a single wavelength detection. In recent years, corresponding research progress has been made at home and abroad on the measurement technology of wide-angle body scattering function of a single wavelength. However, if it is necessary to measure the body scattering function of different wavelengths, , you need to replace the light sources of different bands before measuring. The process is time-consuming and cumbersome, and it is easy to cause measurement errors due to installation accuracy and other issues. But for multi-spectral measurement, at the same time, because the scattering of light is sensitive to polarization, the output of multi-band light sources needs to be processed into non-standard Only polarized light can effectively detect scattered light signals. The above two structures of multi-band light source design methods have great difficulty in achieving circular polarization or depolarization.
发明内容Contents of the invention
为了解决上述背景技术所存在的至少一技术问题，本发明提供一种多光谱海水广角体散射函数测量用光源。In order to solve at least one technical problem existing in the above-mentioned background technology, the present invention provides a multispectral light source for seawater wide-angle body scattering function measurement.
为实现上述目的，本发明的技术方案是：In order to achieve the above objects, the technical solution of the present invention is:
一种多光谱海水广角体散射函数测量用光源，包括电机驱动部分、旋转框架部分以及选光部分；A light source for multispectral seawater wide-angle body scattering function measurement, including a motor drive part, a rotating frame part and a light selection part;
所述旋转框架部分包括选光盘轴承座，所述选光盘轴承座的端面设置有出光孔；The rotating frame part includes a disc bearing seat, and an end face of the bearing seat is provided with a light outlet;
所述选光部分包括多波段激光器组，所述多波段激光器组由多个不同波段、发散角小、圆偏振准直激光器组成且由电机驱动部分驱动转动，以使得不同波段激光器所发射出的光束经由光盘轴承座的出光孔射出，所述多波段激光器组由电刷控制实现无接触式供电。The light selection part includes a multi-band laser group. The multi-band laser group is composed of a plurality of circularly polarized collimated lasers with different wavelength bands, small divergence angles, and is driven and rotated by a motor driving part, so that the lasers emitted by different wavelength bands can The light beam is emitted through the light exit hole of the disc bearing seat, and the multi-band laser group is controlled by a brush to achieve contactless power supply.
进一步地，所述电机驱动部分包括电机、减速器以及联轴器；所述电机的转轴与减速器的输入端相联接，减速器的输出端和第一联轴器相联接。Further, the motor driving part includes a motor, a reducer and a coupling; the rotating shaft of the motor is connected to the input end of the reducer, and the output end of the reducer is connected to the first coupling.
进一步地，所述选光部分还包括激光器组锁紧盘、激光器组调整盘和转轴；Further, the light selection part also includes a laser group locking disk, a laser group adjustment disk and a rotating shaft;
所述激光器组锁紧盘和激光器组调整盘结构相同，中部为转轴孔，在盘面中间隔分布有激光器安装孔，相邻的两激光器安装孔之间设置有第一缝隙；在所述激光器安装孔中设置有第二缝隙，第二缝隙将激光器安装孔分为两部分，两部分激光器安装孔之间通过螺栓锁紧连接；The laser group locking disk and the laser group adjustment disk have the same structure, with a rotating shaft hole in the middle, laser mounting holes distributed at intervals in the middle of the disk, and a first gap between two adjacent laser mounting holes; in the laser installation A second gap is provided in the hole, and the second gap divides the laser installation hole into two parts, and the two parts of the laser installation hole are connected by bolt locking;
所述转轴贯穿激光器组锁紧盘和调整盘的转轴孔；The rotating shaft penetrates the rotating shaft holes of the laser unit locking disk and the adjusting disk;
所述激光器被锁紧安装在所述激光器安装孔中并通过所述第二缝隙上的螺栓进行准直调整；The laser is locked and installed in the laser mounting hole and the alignment is adjusted through the bolts on the second gap;
进一步地，所述选光部分还包括轴承，所述轴承装配在选光盘轴承座的端面中。Further, the optical selection part further includes a bearing, and the bearing is assembled in the end face of the optical selection disc bearing seat.
进一步地，所述旋转框架部分还包括轴承行星环，所述轴承行星环包括大轴承、小轴承、定环、行星环；所述小轴承安装在行星环圆心孔，且小轴承外圈与行星环过盈配合；所述行星环过盈配合安装在大轴承内圈，大轴承外圈固定在定环上；所述定环安装固定在选光盘轴承座内部；所述转轴贯穿并固定安装于所述小轴承内圈，一端安装在所述轴承中。Further, the rotating frame part also includes a planetary bearing ring, which includes a large bearing, a small bearing, a fixed ring, and a planetary ring; the small bearing is installed in the center hole of the planetary ring, and the outer ring of the small bearing is in contact with the planetary ring. Ring interference fit; the planetary ring interference fit is installed on the inner ring of the large bearing, and the outer ring of the large bearing is fixed on the fixed ring; the fixed ring is installed and fixed inside the disc bearing seat; the rotating shaft penetrates and is fixedly installed on the One end of the inner ring of the small bearing is installed in the bearing.
进一步地，所述多波段激光器组的电源线以及控制导线穿过行星环与大轴承的星孔，并与行星环相对固定。Further, the power lines and control wires of the multi-band laser group pass through the star holes of the planetary ring and the large bearing, and are fixed relative to the planetary ring.
进一步地，所述旋转框架部分还包括电刷固定套、选光座、第二联轴器、电刷、传动轴；所述电刷安装在电刷固定套和选光座的内部；所述传动轴穿过电刷，一端与第一联轴器相接，另一端与第二联轴器相接，第二联轴器和所述转轴的另一端相接；选光座的大径端与选光盘轴承座开口端相接并固定。Further, the rotating frame part also includes a brush fixed sleeve, an optical selector seat, a second coupling, a brush, and a transmission shaft; the brush is installed inside the brush fixed sleeve and the optical selector seat; The transmission shaft passes through the brush, one end is connected to the first coupling, the other end is connected to the second coupling, the second coupling is connected to the other end of the rotating shaft; the large diameter end of the optical selector seat Connect and fix with the open end of the disc bearing seat.
进一步地，所述转轴由第一转轴和第二转轴联接而成。Further, the rotating shaft is connected by a first rotating shaft and a second rotating shaft.
进一步地，所述电刷为多波段激光器组引出导线的整周旋转提供稳定的供电结构支持，其包括内圈和外圈，外圈与选光座固定，内圈与传动轴保持相对固定，内圈与传动轴同步旋转。Further, the brush provides stable power supply structural support for the entire rotation of the lead wire of the multi-band laser group. It includes an inner ring and an outer ring. The outer ring is fixed to the light selection seat, and the inner ring is relatively fixed to the transmission shaft. The inner ring rotates synchronously with the drive shaft.
进一步地，所述多波段激光器组包括多个不同波长激光器，电机为步进电机，步进电机由控制芯片进行驱动控制，多波段激光器组的开关状态由MOS管控制；Further, the multi-band laser group includes a plurality of different wavelength lasers, the motor is a stepper motor, the stepper motor is driven and controlled by a control chip, and the switching state of the multi-band laser group is controlled by a MOS tube;
所述多波段激光器组输出光束的发散角只取决于多波段激光器组中的每一个激光器的发散角。The divergence angle of the output beam of the multi-band laser group only depends on the divergence angle of each laser in the multi-band laser group.
本发明与现有技术相比，其有益效果在于：Compared with the prior art, the beneficial effects of the present invention are:
本发明所提供的多光谱光源其发散角、偏振度直接取决于激光器组内各个激光器的准直度、发散角和偏振度，可以有效克服光纤耦合的高成本、大体积以及滤光片分光的准直度差、发散角大、后续消偏振复杂等问题，特别适合用于对光源准直度要求高的光学测量系统，尤其适合用于角度分辨率高、探测视场角小的广角体散射函数测量系统中，光源的准直度高、输出过程控制简单、分光频率可调可控、分光波长可调，极大的简化和小型化了多光谱光源的使用和体积。The divergence angle and polarization degree of the multispectral light source provided by the invention directly depend on the collimation, divergence angle and polarization degree of each laser in the laser group, which can effectively overcome the high cost, large volume and filter light splitting of fiber coupling. Problems such as poor collimation, large divergence angles, and complex subsequent depolarization are particularly suitable for optical measurement systems that require high light source collimation, especially for wide-angle body scattering with high angular resolution and small detection field of view. In the function measurement system, the light source has high collimation, simple output process control, adjustable and controllable spectral frequency, and adjustable spectral wavelength, which greatly simplifies and miniaturizes the use and volume of multispectral light sources.
附图说明Description of the drawings
图1为本发明实施例提供的多光谱海水广角体散射函数测量用光源的整体结构示意图；Figure 1 is a schematic diagram of the overall structure of a light source for multispectral seawater wide-angle body scattering function measurement provided by an embodiment of the present invention;
图2为本发明实施例提供的多光谱海水广角体散射函数测量用光源正面示意图；Figure 2 is a schematic front view of a light source for multispectral seawater wide-angle body scattering function measurement provided by an embodiment of the present invention;
图3为电机驱动部分的整体示意图；Figure 3 is an overall schematic diagram of the motor drive part;
图4为旋转框架部分的整体示意图；Figure 4 is an overall schematic diagram of the rotating frame part;
图5为选光部分的整体示意图；Figure 5 is an overall schematic diagram of the light selection part;
图6为轴承行星环的结构示意图；Figure 6 is a schematic structural diagram of the bearing planetary ring;
图7为光源调整盘、光源锁紧盘的结构示意图；Figure 7 is a schematic structural diagram of the light source adjustment disk and the light source locking disk;
图8为本发明实施例提供的多光谱海水广角体散射函数测量用光源的截面图；Figure 8 is a cross-sectional view of a light source for multispectral seawater wide-angle body scattering function measurement provided by an embodiment of the present invention;
图中：1、电机驱动部分：11、步进电机；12、减速器；13、第一联轴器；2、旋转框架部分；21、电刷固定套；22、选光座；23、轴承行星环；231、大轴承；232、小轴承；233、定环；234、行星环；24、选光盘轴承座；25、第二联轴器；26、电刷；27、传动轴；3、选光部分；31、激光器组调整盘；32、激光器组锁紧盘；300、转轴孔；301、激光器安装孔；302、第一缝隙；303、第二缝隙；33、第一转轴；34、轴承；35、多波段激光器组；36、转轴。In the picture: 1. Motor drive part: 11. Stepper motor; 12. Reducer; 13. First coupling; 2. Rotating frame part; 21. Brush retaining sleeve; 22. Optical seat; 23. Bearing Planetary ring; 231. Large bearing; 232. Small bearing; 233. Fixed ring; 234. Planetary ring; 24. Optional disc bearing seat; 25. Second coupling; 26. Brush; 27. Transmission shaft; 3. Optical selection part; 31. Laser group adjustment disk; 32. Laser group locking disk; 300. Rotating shaft hole; 301. Laser mounting hole; 302. First gap; 303. Second gap; 33. First rotating shaft; 34. Bearing; 35. Multi-band laser group; 36. Rotating shaft.
具体实施方式Detailed ways
实施例：Example:
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接、信号连接；可以是直接相连，也可以是通过中间媒介间接连接，可以说两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明的具体含义。下面结合附图和实施例对本发明的技术方案做进一步的说明。In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. Ground connection; it can be a mechanical connection, an electrical connection, or a signal connection; it can be a direct connection, or an indirect connection through an intermediate medium, which can be said to be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. The technical solution of the present invention will be further described below with reference to the accompanying drawings and examples.
参阅图1-8所示，本实施例提供的多光谱海水广角体散射函数测量用光源主要包括电机驱动部分1、旋转框架部分2以及选光部分3；其中，该旋转框架部分2包括选光盘轴承座24，该选光盘轴承座24的端面设置有一出光孔241；该选光部分3包括多波段激光器组，该多波段激光器组35由发散角小于0.1mrad的4个不同波段圆偏振激光器组成且由电机驱动部分1驱动转动，以使得不同激光器所发射出的光束经由光盘轴承座24的出光孔241射出。也就是说，不同光源的光束会经由选光盘轴承座24的出光孔241射出，因此出光孔241的光束会随着电机的转动而分时输出不同波段圆偏振准直光束。此外，该多波段激光器组由电刷控制实现无接触式供电，以便于在其转动过程更好的实现通断电控制，同时可以有效避免供电电线在激光器组转动过程中被缠绕。Referring to Figures 1-8, the light source for multispectral seawater wide-angle body scattering function measurement provided in this embodiment mainly includes a motor driving part 1, a rotating frame part 2 and a light selecting part 3; wherein the rotating frame part 2 includes an optical selecting disk Bearing seat 24, the end face of the optical disc bearing seat 24 is provided with a light hole 241; the light selection part 3 includes a multi-band laser group, the multi-band laser group 35 is composed of 4 different band circularly polarized lasers with a divergence angle less than 0.1mrad And the motor driving part 1 is driven to rotate, so that the light beams emitted by different lasers are emitted through the light exit hole 241 of the optical disk bearing seat 24 . That is to say, the light beams from different light sources will be emitted through the light exit hole 241 of the optical disc bearing seat 24, so the light beam from the light exit hole 241 will time-share and output circularly polarized collimated light beams in different wavelength bands as the motor rotates. In addition, the multi-band laser group is powered by brush control to achieve contactless power supply, so as to better realize power on and off control during its rotation. At the same time, it can effectively avoid the power supply wire from being entangled during the rotation of the laser group.
由此可见，本发明采用电机直驱准直度较高且消偏振的不同波段微小型半导体激光器分时通过同一出光孔的方式实现多光谱光源的功能。It can be seen that the present invention realizes the function of a multispectral light source by using a motor to directly drive micro-scale semiconductor lasers of different wavelength bands with high collimation and depolarization through the same light outlet in a time-sharing manner.
具体地，上述的电机驱动部分1主要由步进电机11、减速器12、第一联轴器13组成，其中，步进电机11的转轴与减速器12的输入端相联接，减速器12的输出端与第一联轴器13联接。其结构如图3所示。Specifically, the above-mentioned motor driving part 1 mainly consists of a stepper motor 11, a reducer 12, and a first coupling 13. The rotating shaft of the stepper motor 11 is connected to the input end of the reducer 12, and the reducer 12 The output end is connected with the first coupling 13. Its structure is shown in Figure 3.
具体地，上述的选光部3还包括激光器组锁紧盘32、激光器组调整盘31和转轴；该转轴由第一转轴33和第二转轴36联接而成；如图5、7所示，该光源锁紧盘32和光源调整盘31结构相同，中部为转轴孔300，在盘面中间隔均匀分布有激光器安装孔301，相邻的两激光器安装孔301之间设置有第一缝隙302；在该激光器安装孔301中设置有第二缝隙303，第二缝隙303将激光器安装孔分为两部分，两部分激光器安装孔之间通过螺栓锁紧连接；该转轴贯穿光源锁紧盘32和光源调整盘31的转轴孔300；激光器被锁紧安装在该激光器安装孔301中。如此，由于在相邻的两激光器安装孔301之间设置有第一缝隙302，在该激光器安装孔301中设置有第二缝隙303，光源锁紧盘32可将多波长激光器组35紧凑且均匀地固定在旋转形心上，光源调整盘31则可通过第二缝隙303来利用螺栓对多波段激光器组35中各个激光器组的出射方向进行微小的调节以保证多波段光源的出射光束的平行度。此外，该选光部分还包括轴承34，该轴承34装配在选光盘轴承座24的端面中。Specifically, the above-mentioned light selection part 3 also includes a laser group locking disk 32, a laser group adjustment disk 31 and a rotating shaft; the rotating shaft is connected by the first rotating shaft 33 and the second rotating shaft 36; as shown in Figures 5 and 7, The light source locking disk 32 has the same structure as the light source adjusting disk 31, with a rotating shaft hole 300 in the middle, laser mounting holes 301 evenly spaced in the middle of the disk, and a first gap 302 between two adjacent laser mounting holes 301; The laser mounting hole 301 is provided with a second gap 303. The second gap 303 divides the laser mounting hole into two parts. The two parts of the laser mounting holes are connected by bolt locking; the rotating shaft penetrates the light source locking plate 32 and the light source adjustment. The rotation axis hole 300 of the disk 31; the laser is locked and installed in the laser mounting hole 301. In this way, since the first gap 302 is provided between two adjacent laser installation holes 301 and the second gap 303 is provided in the laser installation hole 301, the light source locking disk 32 can compactly and uniformly install the multi-wavelength laser group 35. Groundly fixed on the rotating centroid, the light source adjustment disk 31 can use bolts to slightly adjust the emission direction of each laser group in the multi-band laser group 35 through the second gap 303 to ensure the parallelism of the output beam of the multi-band light source. . In addition, the optical selection part also includes a bearing 34, which is assembled in the end face of the optical selection disc bearing seat 24.
优选地，上述的旋转框架部分还包括轴承行星环23，用以保证选光部分3的旋转精度和多波段激光器组35的重复定位精度，如图6所示，具体构件包括：大轴承231、小轴承232、定环233、行星环234。具体地，小轴承232安装在行星环234圆心孔，且轴承外圈与行星环234过盈配合；行星环234过盈配合安装在大轴承231内圈，大轴承外圈固定在定环233上；定环安装固定在选光盘轴承座24内部。该转轴的一段与小轴承232内圈固定，一端安装在所述轴承34中，该多波段激光器组的供电及控制导线穿过行星环234与大轴承231的星孔，并与行星环234相对固定，当选光部分3在旋转时，由于轴承行星环23上安装有一大一小两个轴承，大小轴承与轴承34可以使得该转轴保持较高的旋转精度以能够保证多波段激光器组35光束通过出光口的重复定位精度，该多波段激光器组35导线也可与星环保持相对静止避免因选光结构旋转而是导线缠绕。其结构如图5所示。Preferably, the above-mentioned rotating frame part also includes a bearing planetary ring 23 to ensure the rotation accuracy of the light selection part 3 and the repeated positioning accuracy of the multi-band laser group 35. As shown in Figure 6, the specific components include: large bearings 231, Small bearing 232, fixed ring 233, planetary ring 234. Specifically, the small bearing 232 is installed in the center hole of the planet ring 234, and the outer ring of the bearing is an interference fit with the planet ring 234; the planet ring 234 is installed in the inner ring of the large bearing 231 with an interference fit, and the outer ring of the large bearing is fixed on the fixed ring 233. ; The fixed ring is installed and fixed inside the disc bearing seat 24. A section of the rotating shaft is fixed to the inner ring of the small bearing 232, and one end is installed in the bearing 34. The power supply and control wires of the multi-band laser group pass through the star holes of the planetary ring 234 and the large bearing 231, and are opposite to the planetary ring 234. Fixed, when the optical selection part 3 rotates, since the bearing planetary ring 23 is equipped with two bearings, one large and one small, the large and small bearings and the bearings 34 can maintain a high rotational accuracy of the rotating shaft to ensure that the multi-band laser group 35 beam passes Due to the repeatable positioning accuracy of the light outlet, the wires of the multi-band laser group 35 can also remain relatively stationary with the star ring to avoid wire entanglement due to the rotation of the light selection structure. Its structure is shown in Figure 5.
具体地，如图4所示，上述的旋转框架部分2还包括有电刷固定套21、选光座22、第二联轴器25、电刷26、传动轴27。其中，电刷26安装在电刷固定套21和选光座22的内部，传动轴27穿过电刷26一端与第一联轴器13相接，一端与第二联轴器25相接，第二联轴器25和第二转轴36相联接，如此，步进电机11即可以直接驱动选光部分3转动；该选光座22的大径端与选光盘轴承座24开口端相接并固定，轴承行星环23利用螺栓安装在轴承座24内部，其结构如图3所示。进一步地，该电刷26可为多波段激光器组35引出导线的整周旋转提供稳定的供电结构支持，其包括内圈和外圈，外圈与选光座22固定，内圈与传动轴27保持相对固定，内圈与传动轴27同步旋转。Specifically, as shown in FIG. 4 , the above-mentioned rotating frame part 2 also includes a brush fixing sleeve 21 , an optical selection seat 22 , a second coupling 25 , a brush 26 , and a transmission shaft 27 . Among them, the brush 26 is installed inside the brush fixing sleeve 21 and the optical selector seat 22. The transmission shaft 27 passes through the brush 26 and is connected to the first coupling 13 at one end and the second coupling 25 at the other end. The second coupling 25 and the second rotating shaft 36 are connected, so that the stepper motor 11 can directly drive the optical selection part 3 to rotate; the large diameter end of the optical selection seat 22 is connected with the open end of the optical selection plate bearing seat 24 and Fixed, the bearing planet ring 23 is installed inside the bearing seat 24 using bolts, and its structure is shown in Figure 3. Further, the brush 26 can provide stable power supply structure support for the entire rotation of the lead wire of the multi-band laser group 35. It includes an inner ring and an outer ring. The outer ring is fixed to the light selection seat 22, and the inner ring is fixed to the transmission shaft 27. Remaining relatively fixed, the inner ring and the transmission shaft 27 rotate synchronously.
具体的，可在选光部分3上安装四个不同波长激光器来组成多波段激光器组，该多波段激光器组输出光束的发散角只取决于多波段激光器组中的每一个激光器的发散角；选用装有传动比为27:1减速器的28步进电机，并照上述的结构安装成型。步进电机11由LV8728MR进行驱动控制，多波段激光器组35的开关状态由MOS管控制，总控芯片采用STM32，上述结构安装在一水密舱体中，舱体外接12V直流电供光源工作及分光。也就是说，本发明所提供的多波段的可选光源，可相应适配到现有国内自主研发的水体的体散射函数测量仪器中(发明专利号：ZL201710253401.1)，在不降低仪器测量精度的同时提高仪器测量的光谱分辨率。Specifically, four different wavelength lasers can be installed on the light selection part 3 to form a multi-band laser group. The divergence angle of the output beam of the multi-band laser group only depends on the divergence angle of each laser in the multi-band laser group; select A 28 stepper motor equipped with a reducer with a transmission ratio of 27:1 is installed and formed according to the above structure. The stepper motor 11 is driven and controlled by LV8728MR, the switching status of the multi-band laser group 35 is controlled by a MOS tube, and the master control chip adopts STM32. The above structure is installed in a watertight cabin, and a 12V DC power is connected to the outside of the cabin for light source operation and light splitting. That is to say, the multi-band optional light source provided by the present invention can be adapted to the existing domestically independently developed water volume scattering function measuring instrument (Invention Patent No.: ZL201710253401.1) without reducing the measurement value of the instrument. While improving the accuracy, the spectral resolution of the instrument measurement is also improved.
本发明可按照所烧录的程序对多波段激光器组35和步进电机1进行控制。例如，可将由四个不同波长的激光器组成的多波段激光器组35设置为常亮状态，步进电机持续顺时针旋转来改变出光口和出射光束波长；也可将四个光源35开关状态以旋转一整周作为一个周期，通过出光口选通或阻断。The present invention can control the multi-band laser group 35 and the stepper motor 1 according to the programmed program. For example, the multi-band laser group 35 composed of four lasers of different wavelengths can be set to a constant light state, and the stepper motor continues to rotate clockwise to change the light outlet and the wavelength of the outgoing beam; the four light sources 35 can also be turned on and off to rotate A whole week is used as a cycle, and is gated or blocked through the light outlet.
综上，本发明所提供的多光谱光源其发散角、偏振度直接取决于激光器组内各个激光器的准直度和发散角，可以有效克服光纤耦合的高成本、大体积以及滤光片分光的准直度差、发散角大、后续消偏振复杂等问题，特别适合用于对光源准直度要求高的光学测量系统，尤其适合用于角度分辨率高的广角体散射函数测量系统中，光源的准直度高、输出过程控制简单、分光频率可调可控、分光波长可调，极大的简化和小型化了多光谱光源的使用和体积，具有很好的原创性；光源设计中巧妙地利用了轴承行星环、选光部分的轴承组，有效确保用户在选择光源过程中出射光束有较高的重复定位精度。通过采用本发明的光源能够实现提高海水广角体散射函数测量的光谱分辨率的目的。In summary, the divergence angle and polarization degree of the multispectral light source provided by the present invention directly depend on the collimation and divergence angle of each laser in the laser group, and can effectively overcome the high cost, large volume and filter light splitting of fiber coupling. Problems such as poor collimation, large divergence angles, and complex subsequent depolarization are particularly suitable for use in optical measurement systems that require high light source collimation. It is especially suitable for use in wide-angle volume scattering function measurement systems with high angular resolution. It has high collimation, simple output process control, adjustable and controllable splitting frequency, and adjustable splitting wavelength, which greatly simplifies and miniaturizes the use and volume of multispectral light sources, and has great originality; the light source design is ingenious It makes full use of the bearing planetary ring and the bearing group of the light selection part to effectively ensure that the user has high repeatability positioning accuracy of the outgoing beam during the process of selecting the light source. By using the light source of the present invention, the purpose of improving the spectral resolution of seawater wide-angle body scattering function measurement can be achieved.
上述实施例只是为了说明本发明的技术构思及特点，其目的是在于让本领域内的普通技术人员能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡是根据本发明内容的实质所做出的等效的变化或修饰，都应涵盖在本发明的保护范围内。The above embodiments are only for illustrating the technical concepts and characteristics of the present invention. Their purpose is to enable those of ordinary skill in the art to understand the content of the present invention and implement it accordingly. They cannot limit the scope of protection of the present invention. All equivalent changes or modifications made based on the essence of the present invention should be included in the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
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| CN202210028589.0ACN114414482B (en) | 2022-01-11 | 2022-01-11 | Multispectral light source for measuring wide-angle sea water body scattering function |
| Application Number | Priority Date | Filing Date | Title |
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| CN202210028589.0ACN114414482B (en) | 2022-01-11 | 2022-01-11 | Multispectral light source for measuring wide-angle sea water body scattering function |
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| CN114414482A CN114414482A (en) | 2022-04-29 |
| CN114414482Btrue CN114414482B (en) | 2023-10-20 |
| Application Number | Title | Priority Date | Filing Date |
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| CN202210028589.0AActiveCN114414482B (en) | 2022-01-11 | 2022-01-11 | Multispectral light source for measuring wide-angle sea water body scattering function |
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