CN205192728U - Star sensor optical system multiplying power colour difference test equipment - Google Patents

Star sensor optical system multiplying power colour difference test equipment Download PDF

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CN205192728U
CN205192728U CN201520623409.9U CN201520623409U CN205192728U CN 205192728 U CN205192728 U CN 205192728U CN 201520623409 U CN201520623409 U CN 201520623409U CN 205192728 U CN205192728 U CN 205192728U
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optical system
test
star sensor
star
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张洁
薛勋
赵建科
周艳
胡丹丹
徐亮
刘峰
陈永权
赵怀学
张欢
焦璐璐
段炯
郑党龙
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XiAn Institute of Optics and Precision Mechanics of CAS
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Abstract

一种星敏感器光学系统倍率色差测试设备,该测试设备包括目标模拟部件、被测光学系统安装部件、显微采集部件和控制及数据处理计算机;目标模拟部件、被测光学系统安装部件和显微采集部件依次设置于同一光路上;目标模拟部件包括单色仪、平行光管、滤光片靶轮和目标靶轮;滤光片靶轮和目标靶轮依次设置在单色仪的出射光路上;目标靶轮的靶面与平行光管焦平面重合;待测光学系统设置在被测光学系统安装部件上;控制及数据处理计算机分别与单色仪、带有测试所需的各种谱段范围滤光片的滤光片靶轮、带有多组目标板的目标靶轮和被测光学系统安装部件相连。本实用新型具有测试效率高、测试人员少和可扩大测试范围的优点。

A magnification chromatic aberration test device for a star sensor optical system, the test device includes a target simulation part, a measured optical system installation part, a microscopic acquisition part and a control and data processing computer; a target simulation part, a test optical system installation part and a display The micro-acquisition components are sequentially arranged on the same optical path; the target simulation components include a monochromator, a collimator, a filter target wheel, and a target target wheel; the filter target wheel and the target target wheel are sequentially set on the exit light on the road; the target surface of the target target wheel coincides with the focal plane of the collimator; the optical system to be tested is set on the installation part of the optical system to be tested; the control and data processing computers are respectively connected to the monochromator, with various spectral The filter target wheel of the segment range filter, the target target wheel with multiple groups of target plates are connected with the installation parts of the optical system under test. The utility model has the advantages of high testing efficiency, fewer testing personnel and expanded testing range.

Description

星敏感器光学系统倍率色差测试设备Star sensor optical system magnification chromatic aberration test equipment

技术领域technical field

本实用新型属于光学检测领域,涉及一种星敏感器光学系统关键参数自动化测试设备,尤其涉及一种对星敏感器光学系统倍率色差进行自动测量的测试设备。The utility model belongs to the field of optical detection, and relates to an automatic test device for key parameters of an optical system of a star sensor, in particular to a test device for automatically measuring the magnification chromatic aberration of the optical system of a star sensor.

背景技术Background technique

星敏感器是以恒星为参照系,以星空为工作对象,以卫星、宇航飞船、飞机、船舰及导弹等为载体的高精度空间姿态测量装置,工作时通过探测天球上不同恒星的位置,将其与已知星图进行比对,为载体提供准确的空间方位和基准。The star sensor is a high-precision space attitude measurement device with the star as the reference system, the starry sky as the working object, and the satellite, spacecraft, aircraft, ship and missile as the carrier. When working, it detects the positions of different stars on the celestial sphere, Compare it with known star maps to provide accurate spatial orientation and benchmarks for the carrier.

星敏感器光学系统是星敏感器的重要组成部分,其参数(例如光谱能量集中度以及倍率色差等)直接影响星敏感器整系统的性能指标。其中,光谱能量集中度是考察分布在像面上不同谱段色光的点扩散圆直径是否在特定范围内,为使其质心位置判别准确的同时不会被当成噪点剔除,一般需使点扩散圆的大部分能量集中在1×1到3×3个像元之间。另外,倍率色差是考察同一视场处不同谱段色光的点扩散圆质心位置判别误差是否在一定范围内,为使其误差不影响整机姿态测量,一般需使其不大于0.3个像元大小。上述两个指标体现到整系统上,即可保障星敏感器对于不同谱段恒星的位置进行准确判定,不会因为谱段不同造成质心位置准确性判别有差异,进而保证星敏感器为其载体提供准确的姿态测量数据。由此可见,光谱能量集中度和倍率色差的准确测试对于星敏感器系统来说至关重要。The star sensor optical system is an important part of the star sensor, and its parameters (such as spectral energy concentration and chromatic aberration of magnification, etc.) directly affect the performance index of the star sensor system. Among them, the spectral energy concentration is to investigate whether the diameters of the point diffusion circles distributed on the image surface in different spectral bands are within a specific range. Most of the energy is concentrated between 1×1 and 3×3 pixels. In addition, the chromatic aberration of magnification is to investigate whether the centroid position of the point diffusion circle of different spectral bands in the same field of view is within a certain range. In order to make the error not affect the attitude measurement of the whole machine, it is generally necessary to make it not greater than 0.3 pixel size . The above two indicators are reflected in the whole system, which can ensure that the star sensor can accurately determine the position of stars in different spectral bands, and will not cause differences in the accuracy of the center of mass position due to different spectral bands, thereby ensuring that the star sensor is its carrier Provides accurate attitude measurement data. It can be seen that the accurate measurement of spectral energy concentration and chromatic aberration of magnification is very important for the star sensor system.

目前,光谱能量集中度和倍率色差是星敏感器光学系统测试指标中最花费人员及时间的项目。由于测试的视场、谱段等影响,造成上述两项指标测试点繁多,仅靠人工更换测试点位置及光源谱段,不仅费时费力,同时也难免各种人为测试误差的出现。At present, spectral energy concentration and chromatic aberration of magnification are the most labor-intensive and time-consuming items in the star sensor optical system test indicators. Due to the influence of the field of view and spectrum of the test, there are many test points for the above two indicators. It is not only time-consuming and labor-intensive to manually change the position of the test points and the spectrum of the light source, but it is also inevitable that various human-made test errors will appear.

另外,由于星敏感器的应用范围不同,对于光源的需求也不同。测试上述两项指标时,有的型号需给出不同光谱位置单色光下的测试数据,有的型号需给出某一谱段范围内的测试数据,目前,为了满足测试技术指标,需经常更换光源来适应不同的需求。In addition, due to the different application ranges of star sensors, the requirements for light sources are also different. When testing the above two indicators, some models need to give test data under monochromatic light at different spectral positions, and some models need to give test data within a certain spectral range. At present, in order to meet the test technical indicators, often Change the light source to suit different needs.

这些限制的存在,使星敏感器光学系统测试过程成为整个研制过程的瓶颈,阻碍了星敏感器产品化的进程,是星敏感器的在卫星、宇航飞船、飞机、船舰及导弹等载体上进行广泛使用的一大障碍。The existence of these limitations makes the star sensor optical system test process a bottleneck in the entire development process, hindering the process of star sensor productization, and is the basis for the star sensor on satellites, spacecraft, aircraft, ships and missiles. A major obstacle to widespread use.

因此,研制一种针对光学系统的自动化倍率色差测试设备,是非常必要的。Therefore, it is very necessary to develop an automatic magnification chromatic aberration testing equipment for optical systems.

实用新型内容Utility model content

为了解决背景技术中存在的上述技术问题,本实用新型提供了一种测试效率高、测试人员少以及可扩大测试范围的星敏感器光学系统倍率色差测试设备。In order to solve the above-mentioned technical problems in the background technology, the utility model provides a magnification chromatic aberration testing device for a star sensor optical system with high testing efficiency, fewer testing personnel and expanded testing range.

本实用新型的技术解决方案是:本实用新型提供了一种星敏感器光学系统倍率色差测试设备,其特征在于:所述星敏感器光学系统倍率色差测试设备包括目标模拟部件、被测光学系统安装部件、显微采集部件以及控制及数据处理计算机;所述目标模拟部件、被测光学系统安装部件以及显微采集部件依次设置于同一光路上;所述目标模拟部件包括单色仪、平行光管、带有测试所需的各种谱段范围滤光片的滤光片靶轮以及带有多组目标板的目标靶轮;所述带有测试所需的各种谱段范围滤光片的滤光片靶轮以及带有多组目标板的目标靶轮依次设置在单色仪的出射光路上;所述带有多组目标板的目标靶轮的靶面与平行光管焦平面重合;待测光学系统设置在被测光学系统安装部件上;所述控制及数据处理计算机分别与单色仪、带有测试所需的各种谱段范围滤光片的滤光片靶轮、带有多组目标板的目标靶轮以及被测光学系统安装部件相连。The technical solution of the utility model is: the utility model provides a chromatic aberration of magnification test equipment for the optical system of the star sensor, which is characterized in that: the chromatic aberration of magnification test equipment for the optical system of the star sensor includes a target simulation component, a measured optical system Mounting components, microscopic collection components, and control and data processing computers; the target simulation components, the measured optical system installation components, and the microscopic collection components are sequentially arranged on the same optical path; the target simulation components include a monochromator, a parallel light Tubes, filter target wheels with various spectral range filters required for testing, and target target wheels with sets of target plates; said with various spectral range filters required for testing The filter target wheel and the target target wheel with multiple groups of target plates are sequentially arranged on the exit light path of the monochromator; the target surface of the target target wheel with multiple groups of target plates coincides with the focal plane of the collimator The optical system to be tested is arranged on the installed part of the optical system to be tested; the control and data processing computer are respectively connected with the monochromator, the filter target wheel with various spectral range filters required for the test, and the There are multiple sets of target wheels of the target board and the installation parts of the optical system to be tested are connected.

上述带有多组目标板的目标靶轮上插装有一组鉴别率板、一组波罗板以及多组星点板。A set of discrimination rate boards, a set of Polo boards and multiple sets of star point boards are installed on the target target wheel with multiple sets of target boards.

上述多组星点板上的星点的直径的确定方式是:The determination mode of the diameter of the star point on the above-mentioned multiple groups of star point boards is:

dd >> 0.610.61 λλ Ff DD.

式中:In the formula:

d是星点板上的星点的直径,单位为微米(μm);d is the diameter of the star point on the star point plate, in micrometers (μm);

λ是被测光学系统的中心波长,单位为微米(μm);λ is the central wavelength of the optical system under test, in microns (μm);

F是平行光管的焦距,单位为毫米(mm);F is the focal length of the collimator, in millimeters (mm);

D是被测光学系统的入瞳直径,单位为毫米(mm)。D is the entrance pupil diameter of the optical system under test, in millimeters (mm).

上述被测光学系统安装部件包括俯仰及水平调节装置以及安装法兰;所述安装法兰设置在俯仰及水平调节装置上;被测光学系统设置在安装法兰上;所述控制及数据处理计算机与俯仰及水平调节装置相连。The installation part of the above-mentioned optical system under test includes a pitch and level adjustment device and a mounting flange; the installation flange is arranged on the pitch and level adjustment device; the measured optical system is arranged on the installation flange; the control and data processing computer Connected to the pitch and level adjustment device.

上述显微采集部件包括电控转台以及设置在电控转台上的三维CCD显微采集系统;所述三维CCD显微采集系统包括三维平移台以及设置在三维平移台上的CCD显微系统;所述控制及数据处理计算机分别与电控转台以及三维CCD显微采集系统相连。The above-mentioned microscopic acquisition components include an electric control turntable and a three-dimensional CCD microscopic acquisition system arranged on the electric control turntable; the three-dimensional CCD microscopic acquisition system includes a three-dimensional translation platform and a CCD microscopic system arranged on the three-dimensional translation platform; The control and data processing computers are respectively connected with the electric control turntable and the three-dimensional CCD microscopic acquisition system.

上述三维平移台包括垂直于光轴方向且与电控转台的台面相平行的X向电控平移台、垂直于光轴方向且与电控转台的台面相垂直的Y向电控平移台以及沿光轴方向的Z向电控平移台。The above-mentioned three-dimensional translation stage includes an X-direction electric translation stage perpendicular to the optical axis direction and parallel to the table surface of the electric control turntable, a Y-direction electric translation stage perpendicular to the optical axis direction and perpendicular to the table surface of the electric control turntable, and an electric control translation stage along the Z direction electronically controlled translation stage in the optical axis direction.

上述单色仪包括光谱仪,所述光谱仪出射零次光或出射300nm~1200nm单色光。The above-mentioned monochromator includes a spectrometer, and the spectrometer emits zero-order light or emits monochromatic light of 300nm-1200nm.

本实用新型的优点是:The utility model has the advantages of:

本实用新型提供的星敏感器光学系统关键参数自动化测试设备,可对倍率色差进行自动化测试,同时可对焦距、入瞳直径、视场角、后工作距、后截距、轴向色差等指标进行测试,可涵盖星敏感器光学系统80%的常规测试指标。本实用新型提供的星敏感器光学系统关键参数自动化测试设备,也可对其他用途的光学系统进行相关指标的测试,适应范围极广;可满足白光、单色光或某谱段色光测试要求的倍率色差的自动化测试,无需频繁更换光源或更换测试设备;其自动化测试处理系统稳定度高,测试速度比完全人力测试提高了2倍,节省了人力物力,为星敏感器光学系统由原来的小批量生产到现在的产品化生产发挥了极大的作用。The automatic test equipment for the key parameters of the star sensor optical system provided by the utility model can automatically test the chromatic aberration of magnification, and can simultaneously measure the focal length, entrance pupil diameter, field of view, back working distance, back intercept, axial chromatic aberration and other indicators The test can cover 80% of the conventional test indicators of the star sensor optical system. The automatic testing equipment for the key parameters of the star sensor optical system provided by the utility model can also test the relevant indicators of the optical system for other purposes, and has a wide range of applications; it can meet the test requirements of white light, monochromatic light or a certain spectrum of chromatic light. The automatic test of chromatic aberration of magnification does not need to frequently replace the light source or the test equipment; the automatic test processing system has high stability, and the test speed is 2 times higher than that of the complete manual test, saving manpower and material resources, and it is the original small optical system for the star sensor. Mass production to the present product production has played a great role.

附图说明Description of drawings

图1是本实用新型提供的测试设备的结构示意图;Fig. 1 is the structural representation of the test equipment provided by the utility model;

其中:in:

1-平行光管;2-目标靶轮;3-滤光片靶轮;4-单色仪;5-俯仰及水平调节装置;6-安装法兰;7-电控转台;8-Y向电控平移台;9-Z向电控平移台;10-X向电控平移台;11-CCD显微系统;12-控制及数据处理计算机。1-collimator; 2-target target wheel; 3-filter target wheel; 4-monochromator; 5-pitch and level adjustment device; 6-installation flange; 7-electric control turntable; 8-Y direction 9-Z direction electric control translation stage; 10-X direction electric control translation stage; 11-CCD microscope system; 12-control and data processing computer.

具体实施方式detailed description

参见图1,本实用新型提供的星敏感器光学系统倍率色差测试设备,该设备包括:目标模拟部件、被测光学系统安装部件、显微采集部件、控制及数据处理计算机12;目标模拟部件、被测光学系统安装部件、显微采集部件依次设置于测试光轴上;控制及数据处理计算机分别与目标模拟部件、被测光学系统安装部件、显微采集部件相连接。Referring to Fig. 1, the star sensor optical system chromatic aberration of magnification testing equipment provided by the utility model comprises: target simulation part, measured optical system mounting part, microscopic acquisition part, control and data processing computer 12; target simulation part, The installation part of the optical system under test and the microscopic collection part are sequentially arranged on the test optical axis; the control and data processing computers are respectively connected with the target simulation part, the installation part of the optical system under test and the microscopic collection part.

目标模拟部件包括单色仪4、滤光片靶轮3、目标靶轮2及平行光管1;单色仪4出光口朝向平行光管1焦面;滤光片靶轮3位于单色仪4和目标靶轮2之间;目标靶轮2靶面与平行光管1焦平面重合,具体如下:The target simulation components include a monochromator 4, a filter target wheel 3, a target target wheel 2 and a collimator 1; the light outlet of the monochromator 4 faces the focal plane of the collimator 1; the filter target wheel 3 is located in the monochromator Between 4 and the target target wheel 2; the target surface of the target target wheel 2 coincides with the focal plane of the collimator 1, as follows:

1)单色仪4包括氙灯及光谱仪两部分;光谱仪可满足出射零次光(即未通过光谱仪中光栅的氙灯原始光)和出射300nm~1200nm单色光(分辨率0.1nm)的需求;1) The monochromator 4 includes two parts: a xenon lamp and a spectrometer; the spectrometer can meet the requirements of emitting zero-order light (that is, the original light of the xenon lamp that has not passed through the grating in the spectrometer) and emitting 300nm-1200nm monochromatic light (resolution 0.1nm);

2)滤光片靶轮3包括多组滤光片安装位置,可安装测试所需的各种谱段范围的滤光片;2) The filter target wheel 3 includes multiple sets of filter installation positions, which can be installed with filters of various spectral ranges required for testing;

3)目标靶轮2包括多组目标板安装位置,可安装鉴别率板、玻罗板及星点板,其中鉴别率板为一组,玻罗板为一组,星点板为多组;3) The target target wheel 2 includes multiple sets of target board installation positions, and can install discrimination rate boards, Perot boards and star point boards, wherein the discrimination rate boards are one group, the Perot boards are one group, and the star point boards are multiple groups;

被测光学系统安装部件包括安装法兰6、俯仰及水平调节装置5,安装法兰6位于俯仰及水平调节装置5之上;The installation part of the optical system under test includes a mounting flange 6, a pitch and level adjustment device 5, and the mounting flange 6 is located above the pitch and level adjustment device 5;

显微采集部件包括三维CCD显微采集系统及电控转台7;三维CCD显微采集系统位于电控转台7之上;三维CCD显微采集系统包括CCD显微系统11及三个平移台:分别为垂直于光轴方向同时与转台台面平行的X向电控平移台10,垂直于光轴方向同时与转台台面垂直的Y向电控平移台8,及沿光轴方向的Z向电控平移台9;Microscopic acquisition components include a three-dimensional CCD microscopic acquisition system and an electronically controlled turntable 7; the three-dimensional CCD microscopic acquisition system is located on the electronically controlled turntable 7; the three-dimensional CCD microscopic acquisition system includes a CCD microscopic system 11 and three translation stages: It is an X-direction electric control translation stage 10 perpendicular to the optical axis direction and parallel to the turntable table surface, a Y-direction electric control translation stage 8 perpendicular to the optical axis direction and perpendicular to the turntable table surface, and a Z-direction electric control translation stage along the optical axis direction station 9;

控制及数据处理计算机12可控制上述所有电控设备,包括单色仪4、滤光片靶轮3、目标靶轮2、俯仰及水平调节装置5、CCD显微系统11、X向电控平移台10、Y向电控平移台、Z向电控平移台9及电控转台7;The control and data processing computer 12 can control all the electronic control devices mentioned above, including the monochromator 4, the filter target wheel 3, the target target wheel 2, the pitch and level adjustment device 5, the CCD microscopic system 11, and the X-direction electric control translation Table 10, Y-direction electric control translation table, Z-direction electric control translation table 9 and electric control turntable 7;

本实用新型所提供星敏感器光学系统倍率色差测试设备的测试方式是:The test method of the star sensor optical system magnification chromatic aberration test equipment provided by the utility model is:

1)配置合适的目标模拟部件及合适的显微物镜;1) Configure suitable target simulation components and suitable microscope objectives;

2)安装被测光学系统;2) Install the optical system under test;

3)显微采集部件对被测光学系统像面所成图像采集放大,转至两个边缘,根据所成图像的大小及形状微调光学系统安装单元,使其光轴与目标模拟部件光轴平行;3) The microscopic acquisition part collects and enlarges the image formed by the image plane of the optical system under test, and transfers it to the two edges, and fine-tunes the optical system installation unit according to the size and shape of the formed image, so that its optical axis is parallel to the optical axis of the target analog component ;

4)参数设置:包括被测光学系统参数设置及测试方法参数设置;4) Parameter setting: including the parameter setting of the optical system under test and the parameter setting of the test method;

5)系统自动测试:包括电控转台及X向电控平移台自动移至采点位置,目标模拟部件根据参数设置自动更换白光、单色光或某谱段色光,自动采集所需数据,软件后台自动计算最终数据;5) System automatic test: including the electric control turntable and the X-direction electric control translation table to automatically move to the position of the collection point, the target simulation part automatically replaces white light, monochromatic light or a certain spectrum of color light according to the parameter settings, and automatically collects the required data. The software The background automatically calculates the final data;

6)输出检测报告单。6) Output the test report.

上述方法的具体实现方式如下:The specific implementation of the above method is as follows:

1)根据被测光学系统的相对孔径选定合适的显微物镜,即显微物镜的数值孔径应大于被测光学系统相对孔径的1/2;1) Select a suitable microscopic objective lens according to the relative aperture of the optical system under test, that is, the numerical aperture of the microscopic objective lens should be greater than 1/2 of the relative aperture of the optical system under test;

2)根据被测光学系统的入瞳直径、平行光管1的焦距及需测试的技术指标,配置合适的目标模拟部件:2) According to the diameter of the entrance pupil of the optical system under test, the focal length of the collimator 1 and the technical indicators to be tested, configure suitable target simulation components:

a)配置目标靶轮2:a) Configure target target wheel 2:

若测试光学系统倍率色差,按公式(1)选择星点直径d,If the chromatic aberration of magnification of the optical system is tested, the diameter d of the star point is selected according to the formula (1),

d > 0.61 λ F D 公式(1) d > 0.61 λ f D. Formula 1)

式中:In the formula:

λ是被测光学系统的中心波长,单位为微米(μm);λ is the central wavelength of the optical system under test, in microns (μm);

F是平行光管1的焦距,单位为毫米(mm);F is the focal length of collimator 1, and the unit is millimeter (mm);

D是被测光学系统的入瞳直径,单位为毫米(mm)。D is the entrance pupil diameter of the optical system under test, in millimeters (mm).

将所选星点直径及其在目标靶轮2的编号输入软件进行配置,如表1:Input the selected star point diameter and its number on the target target wheel 2 into the software for configuration, as shown in Table 1:

表1目标靶轮2编号及目标板示例Table 1 Target wheel 2 number and target plate example

目标位置target location 目标板target board 1#1# 鉴别率板Discrimination board

2#2# 0.1mm星点0.1mm star point 3#3# 0.2mm星点0.2mm star point 4#4# 0.005mm星点0.005mm star point

b)配置滤光片靶轮3:b) Configure filter target wheel 3:

若需测试单色光或白光下的指标,则选择滤光片靶轮的通孔,即不通过任何滤光片进行测试;If it is necessary to test the indicators under monochromatic light or white light, select the through hole of the filter target wheel, that is, do not pass any filter for testing;

若需测试某谱段色光下的指标,则将所需测试的各谱段滤光片安装在滤光片靶轮3上;If it is necessary to test the indicators under the color light of a certain spectrum, the filters of each spectrum to be tested are installed on the filter target wheel 3;

将通孔及各谱段滤光片在滤光片靶轮3的编号输入软件进行配置,如表2:Input the number of the through hole and each spectral band filter on the filter target wheel 3 into the software for configuration, as shown in Table 2:

表2滤光片靶轮3编号及滤光片示例Table 2 No. of filter target wheel 3 and examples of filters

滤光片位置Filter position 中心波长center wavelength 带宽bandwidth 1#1# 通孔through hole // 2#2# 400nm400nm ±100nm±100nm 3#3# 500nm500nm ±100nm±100nm 4#4# 600nm600nm ±100nm±100nm 5#5# 700nm700nm ±100nm±100nm 6#6# 400nm400nm ±50nm±50nm 7#7# 450nm450nm ±50nm±50nm 8#8# 500nm500nm ±50nm±50nm 9#9# 550nm550nm ±50nm±50nm 10#10# 600nm600nm ±50nm±50nm

3)将被测光学系统安装至安装法兰6上,通过观察被测光学系统各镜片反光点连线调节俯仰及水平调节装置5,直至目视所有反光点在同一直线上;3) Install the optical system under test on the mounting flange 6, and adjust the pitch and level adjustment device 5 by observing the line between the reflective points of the lenses of the optical system under test until all the reflective points are on the same straight line;

4)通过调整CCD显微系统11在Y向电控平移台8、Z向电控平移台9、X向电控平移台10上的位置,使其对被测光学系统像面处图像进行采集,配合电控转台7及X向电控平移台10转至光学系统两个边缘,根据所成图像的大小及形状微调光学系统安装单元,直至两边所成图像的大小及形状接近,即被测光学系统光轴与目标模拟部件光轴平行;4) By adjusting the position of the CCD microscope system 11 on the Y-direction electronically controlled translation stage 8, the Z-direction electronically controlled translation stage 9, and the X-direction electronically controlled translation stage 10, it can collect the image at the image plane of the optical system under test , cooperate with the electric control turntable 7 and the X-direction electric control translation stage 10 to move to the two edges of the optical system, fine-tune the optical system installation unit according to the size and shape of the formed image, until the size and shape of the image formed on both sides are close, that is, the measured The optical axis of the optical system is parallel to the optical axis of the target simulation component;

5)参数设置:5) Parameter setting:

a)被测光学系统参数设置:包括被测光学系统的焦距f、半视场角ω;a) Parameter setting of the optical system under test: including the focal length f and the half field angle ω of the optical system under test;

b)测试方法参数设置:(根据测试指标设置方法参数)b) Test method parameter setting: (set method parameters according to test indicators)

若测试指标为倍率色差,则需输入所用显微物镜倍数N,测试谱段(若为单色光,则输入滤光片靶轮3通孔所在位置编号,同时输入单色仪4所需依次变换的单色光波长;若为某谱段色光,则依次输入滤光片靶轮3上配置好的所需谱段色光位置编号,同时输入单色仪4输出零次光)、所选择星点在目标靶轮2上的位置编号、测试归一化视场(例如0.3视场、0.5视场等)、判据(即倍率色差测试结果合格范围)等;If the test index is the chromatic aberration of magnification, you need to input the magnification N of the microscope objective lens used, the test spectrum (if it is monochromatic light, then input the position number of the through hole of the filter target wheel 3, and input the sequence required by the monochromator 4 at the same time. The converted monochromatic light wavelength; if it is a certain spectral segment chromatic light, then input the desired spectral segment chromatic light position numbers configured on the filter target wheel 3 in sequence, and simultaneously input the monochromator 4 to output the zero-order light), the selected star The position number of the point on the target target wheel 2, the test normalized field of view (such as 0.3 field of view, 0.5 field of view, etc.), the criterion (that is, the qualified range of the magnification color difference test result), etc.;

c)其他设置:采集数据保存路径、输入测试人员、测试温湿度等信息。c) Other settings: collect data storage path, input test personnel, test temperature and humidity and other information.

6)对倍率色差进行自动测试,具体测试方法是:6) Automatically test the chromatic aberration of magnification, the specific test method is:

a)电控转台7逆时针转动到需测试的最大视场处,即-|θmax|,X向电控平移台10相应向左移动至边缘,移动量为:a) The electronically controlled turntable 7 rotates counterclockwise to the maximum field of view to be tested, that is, -|θ max |, and the X-direction electronically controlled translation platform 10 moves to the left to the edge correspondingly, and the amount of movement is:

a=f×tan(|θmax|)公式(2)a=f×tan(|θ max |) formula (2)

式中:In the formula:

a是X向电控平移台移动量,单位为毫米(mm);a is the movement amount of the electronically controlled translation platform in the X direction, in millimeters (mm);

f是被测光学系统的焦距,单位为毫米(mm);f is the focal length of the optical system under test, in millimeters (mm);

θmax是需测试的最大视场角,软件根据设置的最大归一化视场及半视场角ω计算得出,如最大归一化视场为0.8视场,则为θmax=0.8×ω,单位为度(°)。θ max is the maximum field of view to be tested, calculated by the software based on the set maximum normalized field of view and half field of view ω, if the maximum normalized field of view is 0.8 field of view, then θ max = 0.8× ω, in degrees (°).

b)在该视场处,依次变换测试波长,按下式分别计算其质心的行坐标xλi及列坐标yλi,由各波长的质心坐标值计算其与中心波长质心坐标值的倍率色差,并将各波长的行坐标xλi、列坐标yλi及倍率色差按顺序保存至步骤5)所设置的保存路径中;b) At the field of view, change the test wavelength in turn, and calculate the row coordinates x λi and column coordinates y λi of the centroid respectively according to the following formula, and calculate the chromatic aberration of magnification between the centroid coordinates of each wavelength and the centroid coordinates of the center wavelength, And save the row coordinates x λi , column coordinates y λi and chromatic aberration of magnification of each wavelength in the saving path set in step 5) in order;

质心的行坐标 the row coordinates of the centroid

质心的列坐标 the column coordinates of the centroid

注1:测试波长更换方法如下:Note 1: The test wavelength replacement method is as follows:

若为白光/单色光,滤光片靶轮3转至通孔处,通过单色仪依次更换白光或已设定的单色光;若为某谱段色光,则单色仪4输出零次光,通过滤光片靶轮3按照配置好的所需谱段色光位置编号依次转动。If it is white light/monochromatic light, the filter target wheel 3 is turned to the through hole, and the white light or the set monochromatic light is replaced sequentially through the monochromator; if it is a certain spectrum of color light, the monochromator 4 outputs zero The secondary light passes through the filter target wheel 3 and rotates sequentially according to the configured number of color light positions in the desired spectrum.

与能量集中度自动测试步骤一致。It is consistent with the automatic test procedure of energy concentration.

注2:倍率色差计算方法如下:Note 2: The calculation method of chromatic aberration of magnification is as follows:

i)识别有效目标区域,对有效目标区域去背景;i) Identify the effective target area and remove the background from the effective target area;

ii)在按公式(4-1)及公式(4-2)计算同一视场处、不同波长下的星点像质心的行坐标xλ及列坐标yλii) Calculate the row coordinates x λ and column coordinates y λ of the centroid of the star point image at the same field of view and at different wavelengths according to formula (4-1) and formula (4-2);

iii)按下式计算倍率色差:iii) Calculate the chromatic aberration of magnification according to the following formula:

ΔΔ λλ == dd NN ×× (( xx λλ -- xx λλ 00 )) 22 ++ (( ythe y λλ -- λλ 00 )) 22

式中:In the formula:

Δλ是波长λ的倍率色差; Δλ is the chromatic aberration of magnification at wavelength λ;

d是CCD像元尺寸,单位为微米(μm);d is the CCD pixel size, the unit is micron (μm);

N是物镜放大倍率;N is the magnification of the objective lens;

xλ是波长λ下,星点像质心的行坐标;x λ is the row coordinate of the centroid of the star image at the wavelength λ;

yλ是波长λ下,星点像质心的列坐标;y λ is the column coordinate of the center of mass of the star image at the wavelength λ;

xλ0是光学系统中心波长下,星点像质心的行坐标;x λ0 is the row coordinate of the center of mass of the star image at the center wavelength of the optical system;

yλ0是光学系统中心波长下,星点像质心的列坐标;y λ0 is the column coordinate of the center of mass of the star image at the center wavelength of the optical system;

c)该视场处所有波长下的倍率色差采集完成后,转到下个视场处进行测试;c) After the chromatic aberration of magnification at all wavelengths at the field of view is collected, transfer to the next field of view for testing;

d)所有预置视场处的倍率色差均测试完成后,提示测试完成并显示测试数据;d) After the chromatic aberration of magnification at all preset fields of view is tested, it will prompt that the test is completed and display the test data;

e)测试结果可参考表3显示:e) The test results can be shown in Table 3:

表3倍率色差测试结果表格Table 3 magnification color difference test result table

7)输出检测报告单,报告单上包括:测试指标、测试时间、测试设备(注明测试物镜倍数、星点大小)、测试人员、测试温湿度、测试数据。7) Output the test report, which includes: test indicators, test time, test equipment (indicating the multiple of the test objective lens and the size of the star point), test personnel, test temperature and humidity, and test data.

Claims (5)

1. an optical system of star sensor ratio chromatism, testing apparatus, is characterized in that: described optical system of star sensor ratio chromatism, testing apparatus comprises target simulation parts, tested optical system installing component, micro-acquisition component and control and data handling machine; Described target simulation parts, tested optical system installing component and micro-acquisition component are set in turn in same light path; Described target simulation parts comprise monochromator, parallel light tube, take turns and take turns with the target organizing Target Board more with the optical filter target of the various spectral coverage scope optical filters needed for test; The described optical filter target with the various spectral coverage scope optical filters needed for test is taken turns and is successively set on the emitting light path of monochromator on the target wheel organizing Target Board more; The target surface of the described target wheel with many group Target Boards overlaps with parallel light tube focal plane; Optical system to be measured is arranged on tested optical system installing component; Described control and data handling machine respectively with monochromator, take turns with the optical filter target of the various spectral coverage scope optical filters needed for testing, to take turns with the target organizing Target Board and tested optical system installing component is connected more;
The described target wheel with many group Target Boards is fitted with one group of resolution chart, one group of Porro tester and organizes star tester more;
The determination mode of the diameter of the asterism on described many group star testers is:
In formula:
D is the diameter of the asterism on star tester, and unit is micron;
λ is the centre wavelength of tested optical system, and unit is micron;
F is the focal length of parallel light tube, and unit is millimeter;
D is the Entry pupil diameters of tested optical system, and unit is millimeter.
2. optical system of star sensor ratio chromatism, testing apparatus according to claim 1, is characterized in that: described tested optical system installing component comprises pitching and level(l)ing device and mounting flange; Described mounting flange is arranged on pitching and level(l)ing device; Tested optical system is arranged on mounting flange; Described control and data handling machine are connected with pitching and level(l)ing device.
3. optical system of star sensor ratio chromatism, testing apparatus according to claim 2, is characterized in that: described micro-acquisition component comprises automatically controlled turntable and is arranged on the micro-acquisition system of three-dimensional CCD on automatically controlled turntable; The micro-acquisition system of described three-dimensional CCD comprises D translation platform and is arranged on the CCD microscopic system on D translation platform; Described control and data handling machine are connected with automatically controlled turntable and the micro-acquisition system of three-dimensional CCD respectively.
4. optical system of star sensor ratio chromatism, testing apparatus according to claim 3, is characterized in that: described D translation platform comprise perpendicular to optical axis direction and the X paralleled with the table top of automatically controlled turntable to electronic control translation stage, perpendicular to optical axis direction and the Y-direction electronic control translation stage perpendicular with the table top of automatically controlled turntable and the Z-direction electronic control translation stage along optical axis direction.
5. optical system of star sensor ratio chromatism, testing apparatus according to claim 4, is characterized in that: described monochromator comprises spectrometer, described spectrometer outgoing zero degree light or outgoing 300nm ~ 1200nm monochromatic light.
CN201520623409.9U 2015-08-18 2015-08-18 Star sensor optical system multiplying power colour difference test equipment Withdrawn - After Issue CN205192728U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105352707A (en) * 2015-08-18 2016-02-24 中国科学院西安光学精密机械研究所 Star sensor optical system multiplying power chromatic aberration testing equipment and testing method
CN106353870A (en) * 2016-10-31 2017-01-25 中国航空工业集团公司洛阳电光设备研究所 Method for adjustment of optical axis before and after reflector reflex at any angle
CN106643799A (en) * 2016-12-22 2017-05-10 中国科学院西安光学精密机械研究所 Target wheel type star point plate focusing device easy to assemble and integrate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105352707A (en) * 2015-08-18 2016-02-24 中国科学院西安光学精密机械研究所 Star sensor optical system multiplying power chromatic aberration testing equipment and testing method
CN105352707B (en) * 2015-08-18 2017-09-29 中国科学院西安光学精密机械研究所 Star sensor optical system multiplying power chromatic aberration testing equipment and testing method
CN106353870A (en) * 2016-10-31 2017-01-25 中国航空工业集团公司洛阳电光设备研究所 Method for adjustment of optical axis before and after reflector reflex at any angle
CN106643799A (en) * 2016-12-22 2017-05-10 中国科学院西安光学精密机械研究所 Target wheel type star point plate focusing device easy to assemble and integrate
CN106643799B (en) * 2016-12-22 2023-09-01 中国科学院西安光学精密机械研究所 A target-wheel-type star point plate focusing device that is easy to assemble and integrate

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