CN101598539B - Method for measuring optical part - Google Patents
Method for measuring optical part Download PDFInfo
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- CN101598539B CN101598539B CN200910303825XA CN200910303825A CN101598539B CN 101598539 B CN101598539 B CN 101598539B CN 200910303825X A CN200910303825X A CN 200910303825XA CN 200910303825 A CN200910303825 A CN 200910303825A CN 101598539 B CN101598539 B CN 101598539B
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Abstract
The invention relates to a method for measuring an optical part. The method comprises the following measuring steps: 1, measuring the characteristics of the optical part by using a three-dimensional digitizer; 2, according to the measured characteristic data of the optical part, establishing a three-dimensional mathematical model corresponding to each optical part by using three-dimensional modeling software; 3, carrying out entity assembling on the optical part to form an incomplete entity, and measuring the position relation of the optical part in the incomplete entity; 4, according to measured data of the position relation, carrying out virtual assembling on the established three-dimensional mathematical model of each optical part; 5, continuously assembling and measuring; 6, judging whether the virtually-assembled three-dimensional mathematical models of all the parts needed for measurement are obtained, if the virtually-assembled three-dimensional mathematical model of all the parts needed for measurement are not obtained, carrying out the step (5) till obtaining the virtually-assembled three-dimensional mathematical models of all the parts needed for measurement, and if so, carrying out the following step; and 7, obtaining the needed data of the optical part through measurement of the virtually-assembled three-dimensional mathematical model and/or calculation of relevantdimensions.
Description
Technical field
The present invention relates to optical measuring technique, especially the measuring method of optical element.
Background technology
The OC measurement of optical element is often used in the optics assembling, for the higher optical system of accuracy requirement, in order to improve the assembly precision of optical system, guarantees the image quality of optical system, need the assembling result of optical element be detected.A lot of to the OC measuring method of optical element in the centered optical system of routine, and for non co axial and there is in the optical system of certain space angle the OC measuring method of optical element fewer, be badly in need of a kind of measuring accuracy height, workable measuring method.
Summary of the invention
The measuring method that the purpose of this invention is to provide a kind of measuring accuracy height, workable optical element.
For achieving the above object, the present invention adopts following technical scheme:
The measuring method measuring process of optical element is as follows:
(1) with 3D digitizer the optical element feature is carried out entity measuring, obtain the optical element characteristic;
(2) according to measured optical element substance feature data, use 3D sculpting software, set up the corresponding three-dimensional mathematical model of each optical element;
(3) part in whole optical elements is carried out entity assembling, form imperfect entity, the position relation of the optical element in the imperfect entity is measured, obtain the position data of optical element in imperfect entity;
(4) according to the position data of optical element in imperfect entity that records, the optical element model corresponding with the actual imperfect entity of finishing in the three-dimensional mathematical model of each optical element of having set up carried out virtual assembling, obtain the virtual assembling three-dimensional mathematical model of imperfect entity;
(5) on the basis of imperfect entity, proceed entity assembling, as required the position relation of institute's Assembly part in imperfect entity carried out entity measuring, obtain the position data of more optical element in imperfect entity, and the three-dimensional mathematical model corresponding with added parts carried out virtual assembling according to the actual location data of added parts;
(6) judged whether to obtain the virtual assembling three-dimensional mathematical model that all measurements need be used part, if "No" then continues execution in step (5), up to having obtained the virtual assembling 3-d mathematics simulation that all measurements need be used optical element; If the then downward execution in step (7) of "Yes";
(7) in virtual assembling three-dimensional mathematical model, the station-keeping data between required optical element is carried out the calculating of virtual measurement and/or relative dimensions, obtain to obtain data.
Described 3D digitizer is a three coordinate measuring machine, and the environment temperature of measurement is 20 ℃ ± 2 ℃.
The present invention uses 3D digitizer and 3D sculpting software, earlier each part is carried out entity measuring, virtual modeling, then part is carried out entity assembling, virtual assembling, again part is carried out entity assembling, virtual assembling, measurement, up to this optical element measuring method of measuring while assembling that is assembled into complete entity, finish with existing once assembling, the measuring method that measures single data is compared whole assembling situations that can obtain optical system more comprehensively, more accurately, is the measuring method of a kind of measuring accuracy height, workable optical element.
Use three coordinate measuring machine in 20 ℃ ± 2 ℃ scopes of temperature, can record the data of size, shape and the mutual alignment of part and assembly accurately, and can scan continuous curve surface.
Description of drawings
Fig. 1 is the lens arrangement structural representation.
Embodiment
Optical element measuring method provided by the present invention, the environment temperature of measurement are 20 ℃ ± 2 ℃, are example with the center distance of measuring optical element lens 4 and balsaming lens 1, and the concrete steps of its measuring method are as follows:
(1) with three coordinate measuring machine optical element lens barrel 2, lens 4, balsaming lens 1 and adjustment piece 3 usefulness pattern measurement methods are carried out entity measuring, obtain the related data of features such as each part thickness, length, curved surface, also can use the method for scanning survey to measure;
(2) under 3D sculpting software SolidWorks software environment, above-mentioned optical element is carried out mathematical modeling according to the part feature data that record, obtain the three-dimensional mathematical model of each part;
(3) lens barrel 2 is installed to by mode shown in Figure 1 on the measuring table of three coordinate measuring machine fixing, then balsaming lens 1 is packed in the lens barrel 2, form an incomplete entity, the imperfect entity that assembles is carried out entity measuring, measure the outer surface features of lens barrel 2 and the upper surface feature of balsaming lens 1, obtain the two position data in entity assembling;
(4) physical location in imperfect entity according to lens barrel 2 and balsaming lens 1, in the SolidWorks software environment, three-dimensional mathematical model to lens barrel 2 and balsaming lens 1 is carried out virtual assembling, that is to say the feature of measuring is mated, and obtains the virtual three-dimensional mathematical model of imperfect entity;
(5) keep the imperfect entity assembled motionless, will adjust piece 3 and lens 4 and pack into successively in the lens barrel 2, the upper surface of measurement lens 4 obtains the position data of lens 4 in lens barrel 2;
(6) according to the position data of lens 4 in lens barrel 2, lens 4 are packed in the virtual three-dimensional mathematical model of the resulting imperfect entity of step (4), form new virtual three-dimensional mathematical model;
(7) learn through judgement, recorded the virtual assembling three-dimensional mathematical model of all parts that need use, then continue to carry out downwards;
(8) the virtual three-dimensional mathematical model that comprises assembly parts lens 4 and balsaming lens 1 is carried out size calculation, obtain the optical element center distance that we need, can certainly obtain the optical axis deviation of the two.
Certainly the measuring method of this optical element has wider range of application, be not limited to measure the center distance of optical element, also can be used for the measurement of space angle, optical axis deviation etc., the method not only can be used for the measurement of optical element, can also be used for the measurement of non-optical part locus; 3D sculpting software also is not limited to SolidWorks software, and any software that can carry out three-dimensional modeling all can be used for this method.
Claims (2)
1. the measuring method of optical element, it is characterized in that: the measuring process of this measuring method is as follows:
(1) with 3D digitizer the optical element feature is carried out entity measuring, obtain the optical element characteristic;
(2) according to measured optical element substance feature data, use 3D sculpting software, set up the corresponding three-dimensional mathematical model of each optical element;
(3) part in whole optical elements is carried out entity assembling, form imperfect entity, the position relation of the optical element in the imperfect entity is carried out entity measuring, obtain the position data of optical element in imperfect entity;
(4) according to the position data of optical element in imperfect entity that records, the optical element model corresponding with the actual imperfect entity of finishing in the three-dimensional mathematical model of each optical element of having set up carried out virtual assembling, obtain the virtual assembling three-dimensional mathematical model of imperfect entity;
(5) on the basis of imperfect entity, proceed entity assembling, as required the position relation of institute's Assembly part in imperfect entity carried out entity measuring, obtain the position data of more optical element in imperfect entity, and the three-dimensional mathematical model corresponding with added parts carried out virtual assembling according to the actual location data of added parts;
(6) judged whether to obtain the virtual assembling three-dimensional mathematical model that all measurements need be used part,, need use the virtual assembling three-dimensional mathematical model of optical element up to having obtained all measurements if "No" then continues execution in step (5); If the then downward execution in step (7) of "Yes";
(7) in virtual assembling three-dimensional mathematical model, the station-keeping data between required optical element is carried out the calculating of virtual measurement and/or relative dimensions, obtain to obtain data.
2. the measuring method of optical element according to claim 1, it is characterized in that: described 3D digitizer is a three coordinate measuring machine, the environment temperature of measurement is 20 ℃ ± 2 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910303825XA CN101598539B (en) | 2009-06-29 | 2009-06-29 | Method for measuring optical part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910303825XA CN101598539B (en) | 2009-06-29 | 2009-06-29 | Method for measuring optical part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101598539A CN101598539A (en) | 2009-12-09 |
| CN101598539B true CN101598539B (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910303825XA Expired - Fee Related CN101598539B (en) | 2009-06-29 | 2009-06-29 | Method for measuring optical part |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674934B (en) * | 2016-01-25 | 2018-06-12 | 西安应用光学研究所 | A kind of assay method for being used for the catadioptric system optical interval containing hollow primary mirror |
| CN106600685A (en) * | 2016-12-06 | 2017-04-26 | 中国航空工业集团公司洛阳电光设备研究所 | Optical element space measurement and assembly method in optical assembly |
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2009
- 2009-06-29 CN CN200910303825XA patent/CN101598539B/en not_active Expired - Fee Related
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