CN1258072C - A Method for Testing the Parallelism of the Optical Axis of the Refracting Light Tube - Google Patents
A Method for Testing the Parallelism of the Optical Axis of the Refracting Light Tube Download PDFInfo
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- CN1258072C CN1258072C CN 02133208 CN02133208A CN1258072C CN 1258072 C CN1258072 C CN 1258072C CN 02133208 CN02133208 CN 02133208 CN 02133208 A CN02133208 A CN 02133208A CN 1258072 C CN1258072 C CN 1258072C
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Abstract
本发明涉及用于瞄准系统中折转光管光轴平行性检验方法。本发明待测折转光管不存在平行误差时，入射光束经立方棱镜的b面反射的光束与自准直平行光管的光轴平行，此时自准直平行光管自准成像的位置与未放待测折转光管时的位置重合；当折转光管存在平行误差时，此时自准直平行光管自准成像的偏离量即为待测折转光管光轴的平行差。是利用五棱镜和立方棱镜是光学检验中常用的标准器件，使用它既经济又方便，且精度高，解决背景技术只适用于对较短的折转光管进行测量的问题。利用立方棱镜相邻表面相互正交的特点减少调整环节，易于调整、成本又低。本发明提供一种满足折转光管光轴平行性检验需要的方法，适用于任何尺寸折转光管光轴平行性的检验。
The invention relates to a method for checking the parallelism of the optical axis of a deflection light pipe in an aiming system. When there is no parallel error in the refraction light tube to be tested in the present invention, the light beam reflected by the b surface of the cube prism is parallel to the optical axis of the self-collimation collimator, at this time, the self-collimation imaging position of the self-collimation collimator is It coincides with the position when the refracting light tube to be tested is not placed; when there is a parallel error in the refracting light tube, the deviation of the self-collimating imaging of the self-collimating collimated light tube at this time is the parallelism of the optical axis of the refracting light tube to be tested Difference. The pentaprism and cube prism are commonly used standard devices in optical inspection, which are economical, convenient, and high-precision, and solve the problem that the background technology is only applicable to the measurement of relatively short refraction light pipes. The feature that the adjacent surfaces of the cubic prisms are orthogonal to each other is used to reduce the adjustment links, which is easy to adjust and low in cost. The invention provides a method for satisfying the inspection requirement of the parallelism of the optical axis of the refraction light pipe, which is suitable for the inspection of the parallelism of the optical axis of the refraction light pipe of any size.
Description
技术领域：本发明属于光学检验技术领域，涉及一种用于瞄准系统中折转光管光轴平行性检验方法的改进。Technical field: The present invention belongs to the technical field of optical inspection, and relates to an improvement of a method for inspecting the parallelism of the optical axis of the deflection light pipe in the aiming system.
背景技术：折转光管一般应用于瞄准系统，当瞄准系统的光轴与被瞄准的目标不处于同一水平面时，需要用折转光管进行基准转换。为提高瞄准精度，需要对折转光管的两块反射镜1和反射镜2做精密调整，使得入射光束与出射光束平行，如图1所示。为此需要对折转光管的入射光束与出射光束的平行性即光轴平行性进行检验。以往的检验方法是如图2所示：Background technology: Refractive light pipes are generally used in aiming systems. When the optical axis of the collimating system is not at the same level as the target to be aimed at, the refracting light pipes need to be used for reference conversion. In order to improve the aiming accuracy, it is necessary to fine-tune the two
首先用0.2秒自准直平行光管对大口径的平面反射镜6自准，平面反射镜的尺寸要大于两光轴的间距。自准后，读取0.2秒自准直平行光管的水平读数α0、高低读数λ0。First, a 0.2-second self-collimating collimator is used to self-collimate the large-
保持0.2秒自准直平行光管与平面反射镜位置不动，将待测的折转光管置于0.2秒自准直平行光管与平面反射镜之间，折转光管的入射端对准0.2秒自准直平行光管。0.2秒自准直平行光管所发出的平行光束经折转光管和平面反射镜反射后重新自准，读取此时0.2秒自准直平行光管的水平读数α和高低读数λ则两光轴的平行差为：Keep the position of the 0.2-second self-collimating collimator and the plane reflector fixed, place the refraction light pipe to be tested between the 0.2-second self-collimation collimator and the plane reflector, and the incident end of the refraction light pipe is aligned with the Accurate 0.2 second self-collimating collimator. The parallel light beam emitted by the 0.2-second self-collimating collimator is reflected by the deflecting light pipe and the plane mirror and then self-collimated again. When reading the level reading α and the high and low reading λ of the 0.2-second self-collimating light pipe at this time, there are two The parallelism of the optical axis is:
水平：Δα＝α-α0 Level: Δα = α - α 0
高低：Δλ＝λ-λ0 High and low: Δλ=λ-λ 0
本发明的详细内容：本发明的目的是为了解决背景技术的这种方法适用于较短的折转光管，对于长的折转光管需要相应尺寸的平面反射镜，而口径大于500mm的平面反射镜，其加工成本高，安装调整困难，用于检验500mm以上的折转光管十分不经济等问题，本发明为此设计一种五棱镜方法来检验折转光管的光轴平行性。Details of the present invention: the purpose of the present invention is to solve the problem of the background technology, which is suitable for shorter light-refracting light pipes. For long light-refracting light pipes, a plane reflector of corresponding size is needed, and a plane with a diameter greater than 500mm Reflector, its processing cost is high, difficult to install and adjust, it is very uneconomical to be used to inspect the refraction light pipe of more than 500mm, etc., the present invention designs a kind of pentaprism method to inspect the optical axis parallelism of refraction light pipe for this reason.
首先自准直平行光管发出的入射光束经五棱镜后垂直出射至立方棱镜的反射面a，然后调整立方棱镜，使入射光束按原路返回五棱镜，再经自准直平行光管自准成像并读取此时的水平读数α0和高低读数λ0；将待测折转光管置于自准直平行光管与五棱镜和立方棱镜之间，使入射光束经待测折转光管和立方棱镜的反射面b后返回待测折转光管，再经自准直平行光管自准成像并读取此时的水平读数α和高低读数λ，则折转光管两光轴的平行差为：水平：Δα＝α-α0，高低：Δλ＝λ-λ0，即完成了折转光管光轴平行性的检验。Firstly, the incident light beam emitted by the self-collimating collimator passes through the pentaprism and exits vertically to the reflective surface a of the cubic prism, then adjusts the cubic prism so that the incident light beam returns to the pentaprism according to the original path, and then self-collimates through the self-collimating collimator Image and read the horizontal reading α 0 and the high and low reading λ 0 at this time; place the refraction light tube to be tested between the self-collimating collimator, the pentaprism and the cube prism, so that the incident beam passes through the refraction light to be measured The tube and the reflective surface b of the cube prism return to the refraction light tube to be tested, and then self-collimate the image through the self-collimation collimator and read the horizontal reading α and the high and low reading λ at this time, then the two optical axes of the refraction light tube The parallel difference is: level: Δα=α-α 0 , height: Δλ=λ-λ 0 , that is, the inspection of the parallelism of the optical axis of the refraction light pipe is completed.
本发明工作时待测折转光管不存在平行误差，入射光束经立方棱镜的b面反射的光束与自准直平行光管的光轴平行，此时自准直平行光管自准成像的位置与未放待测折转光管时的位置重合；当折转光管存在平行误差时，此时自准直平行光管自准成像的偏离量即为待测折转光管光轴的平行差。When the present invention works, there is no parallel error in the refraction light tube to be tested, and the light beam reflected by the b-surface of the cube prism is parallel to the optical axis of the self-collimation collimator. At this time, the self-collimation imaging of the self-collimation The position coincides with the position when the deflection light tube to be tested is not placed; when there is a parallel error in the deflection light tube, the deviation of the self-collimation imaging of the self-collimation collimator at this time is the optical axis of the refraction light tube to be tested Parallelism.
本发明测量方法的优点是利用五棱镜和立方棱镜解决了背景技术中因平面反射镜只适用于较短的折转光管，对于长的折转光管需要相应尺寸的平面反射镜，而口径大于500mm的平面反射镜，其加工成本高，安装调整困难，用于检验500mm以上的折转光管十分不经济等问题，本发明的折转光管光轴平行性检验方法中使用的五棱镜与立方棱镜都是光学检验中常用的标准器件，使用它既经济又方便，且精度高，利用立方棱镜相邻表面相互正交的特点减少调整环节，易于调整、成本又低。本发明提供一种满足折转光管光轴平行性检验需要的方法，本发明可以适用于任何尺寸折转光管光轴平行性的检验。The advantage of the measuring method of the present invention is to utilize the pentaprism and the cubic prism to solve the problems in the background technology because the plane reflector is only suitable for shorter deflection light pipes, and needs a plane reflector of corresponding size for the long deflection light pipe, and the aperture Plane reflectors larger than 500 mm have high processing costs, difficult installation and adjustment, and are very uneconomical for inspecting deflection light pipes above 500 mm. The pentaprism used in the inspection method for the optical axis parallelism of refraction light pipes It is economical and convenient to use, and has high precision. The adjacent surfaces of the cubic prism are orthogonal to each other to reduce adjustment links, which is easy to adjust and low in cost. The invention provides a method for meeting the inspection requirements of the parallelism of the optical axis of the refraction light pipe, and the invention can be applied to the inspection of the parallelism of the optical axis of the refraction light pipe of any size.
附图说明：Description of drawings:
图1是折转光管的示意图Figure 1 is a schematic diagram of the refraction light pipe
图2是背景技术平面反射镜法测折转光管平行性的示意图Fig. 2 is the schematic diagram of measuring the parallelism of the refraction light pipe by the plane mirror method in the background technology
图3是本发明五棱镜法检测折转光管平行性的结构示意图Fig. 3 is the structural representation of detecting the parallelism of the refracted light pipe by the pentaprism method of the present invention
具体实施方式如图3所示：它包括待测折转光管的中反射镜1和反射镜2。立方棱镜3采用光学玻璃或金属材料制成，精度要求可根据测量精度要求选择。五棱镜4采用光学玻璃制成，精度小于1秒。自准直平行光管5采用0.2秒自准直平行光管或其它型号。The specific embodiment is shown in Fig. 3: it includes a
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| CN101261119B (en) * | 2008-05-06 | 2012-01-04 | 中国航空工业第一集团公司北京长城计量测试技术研究所 | Light beam parallelism and collimating fault checking method |
| CN102650731B (en) * | 2011-12-13 | 2016-05-04 | 北京理工大学 | A kind of light path device of turning back for sighting system |
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| CN109387163B (en) * | 2018-12-08 | 2021-01-01 | 中国航空工业集团公司洛阳电光设备研究所 | Large-caliber portable optical axis parallelism calibration method |
| CN113267146B (en) * | 2021-05-12 | 2022-03-22 | 中国科学院西安光学精密机械研究所 | Method and system for calibrating parallelism of heterodromous deflection light pipe based on double-mirror splicing |
| CN114166476A (en) * | 2021-12-02 | 2022-03-11 | 中国科学院长春光学精密机械与物理研究所 | Optical axis parallelism detection method |
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| CN109212775A (en) * | 2018-10-24 | 2019-01-15 | 长春理工大学 | A kind of bio-measurement instrument zero point arm debugging apparatus and method |
| CN109212775B (en) * | 2018-10-24 | 2020-09-08 | 长春理工大学 | Debugging device and method for zero arm of biological measuring instrument |
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