CN102200638A - Dichotomous optical design method of medium-wave infrared microscope objective - Google Patents
Dichotomous optical design method of medium-wave infrared microscope objective Download PDFInfo
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- CN102200638A CN102200638A CN2011101201841A CN201110120184A CN102200638A CN 102200638 A CN102200638 A CN 102200638A CN 2011101201841 A CN2011101201841 A CN 2011101201841A CN 201110120184 A CN201110120184 A CN 201110120184A CN 102200638 A CN102200638 A CN 102200638A
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Abstract
The invention belongs to the field of thermal imaging and provides a dichotomous optical design method of a medium-wave infrared microscope objective. The method comprises the following steps of: dividing the whole microscope objective into an object space lens group and an image space lens group; suppose that beams between the two lens groups are in approximately parallel transmission, separating the object space lens group from the image space lens group, and respectively designing according to a design method of a telescope objective; and inversing one group and combining with the other group to obtain an initial structure of the microscope objective, perfectly designing the initial structure in consideration of influence of an error in focusing on measurement accuracy to obtain an object space telecentric medium-wave infrared microscope objective with high image quality. An amplification factor of the medium-wave infrared microscope objective which is designed by the dichotomous optical design method is easy to determine, and the caliber of an optical system is convenient to control. A diaphragm is placed between the object space lens group and the image space lens group, so requirements of a telecentric light path can be conveniently realized, off-axis aberration is conveniently controlled, and the measurement accuracy is improved. The method can be applied to design process of condensing mirrors, micro-telescope objectives and microscope objectives of other bands.
Description
Technical field
The novel two spectroscopy methods for designing that relate to a kind of medium wave infrared microscopy object lens of the present invention belong to the thermal imaging field.
Background technology
In recent years, along with the continuous maturation of infrared imagery technique and through engineering approaches, practicability development, the development of infrared optical system becomes focus.The image of thermal imaging system can not directly be observed by human eye, thereby brings certain difficulty to detection, the development of infrared optical system certainly will with the development interdependence of measuring technology, proving installation and assessment technology, all kinds of infrared detection systems then arise at the historic moment.The medium wave infrared microscopy object lens that the present invention relates to are the part of certain infrared detection system.Traditional optical design method is the PW method, and this method is not having time and effort consuming under the situation of particular software application, and work efficiency is extremely low, generally will not adopt.The contemporary optics method for designing is " pantography " substantially, promptly according to requirement to optical system, find out the more approaching existing structure of performance parameter, its each size be multiply by pantograph ratio K, obtain desired structure, and estimate the size or the variation tendency of its aberration, optimize the optical system that is met requirement.The initial configuration of medium wave infrared microscopy objective system is less, presses for to seek a kind of simple and efficient method for designing.
Generally there is the restriction of limited mechanical space in tested optical system image planes place, and the numerical aperture of infrared microscopy object lens need be complementary with tested optical system numerical aperture, and this just causes strict the restriction to its bore.The main viewing area of tradition microcobjective is the center, visual field, and general needs aberration on the axis calibration, for guaranteeing that accuracy of detection and this infrared microscopy of Flame Image Process accuracy requirement object lens also need be considered to distort and the correction of place.This just requires to consider various aberrations comprehensively in the initial configuration design process.
Summary of the invention
The purpose of this invention is to provide the optical design new method of a kind of image side mirror component from design medium wave infrared microscopy object lens, can solve questions of substance such as the design complexity, the initial configuration that exist in the above-mentioned infrared microscopy objective lens design are few at the user demand of infrared optical system image quality detection.
Technical scheme of the present invention is as follows:
Two fens design methods of medium wave infrared microscopy object lens are divided into object space mirror group and picture Fang Jing group two parts to whole microcobjective, suppose the approximate parallel transmission of light beam between the two mirror groups, and image side's mirror component is opened, and design according to the telephotolens method for designing respectively.Be inverted wherein one group of initial configuration that obtains microcobjective after making up with another group.
In line with the thought that strict control system bore and enlargement ratio are determined easily, with the approximate parallel beam of light boil down to, identical with object space mirror group as Fang Jing group mentality of designing by object space mirror group.For guaranteeing upward aberration correction requirement of axle, can be with reference to aplanat lens computation process design image Fang Jing group.In addition, reference symmetrical expression system is the useful and vertical favourable characteristics of axial aberration of elimination to the compression aperture of lens, and it is middle that diaphragm is arranged on image Fang Jing group, like this, when having guaranteed that off-axis aberration is proofreaied and correct, helps realizing the object space telecentric beam path.
In the design process, described object space mirror group is considered as the telephotolens of directional light incident, when setting the entrance pupil diameter, guarantees that it is the microcobjective numerical aperture of designing requirement as number formulary value aperture, and accomplish that picture element is good.Equally, for described picture Fang Jing group, when setting the entrance pupil diameter, guarantee that its inverse as number formulary value aperture ratio as number formulary value aperture and described object space mirror group is the enlargement ratio value of microcobjective, and guarantee desirable picture element.Be inverted object space mirror group, and make up, obtain the initial configuration of infrared microscopy object lens, consider the influence of error of focusing, it is designed to the object space telecentric system measuring accuracy with picture Fang Jing group.
The present invention is two spectroscopy methods for designing of medium wave infrared microscopy object lens, has following beneficial effect:
1, adopt the medium wave infrared microscopy object lens of two spectroscopy methods for designing design, the approximate parallel transmission of the light beam between the image Fang Jing group, enlargement ratio determines that easily bore is unlikely excessive;
2, diaphragm is put in the middle of the image Fang Jing group, helps realizing the telecentric beam path requirement, and convenient control off-axis aberration improves measuring accuracy.
3, the described optical design method of patent of the present invention can be generalized in condenser, micro-telephotolens, its all band microcobjective design process, is with a wide range of applications.
Description of drawings
Fig. 1 medium wave infrared microscopy object lens initial configuration synoptic diagram (also as Figure of abstract).
Among the figure: 1, thing, 2, object space mirror group, 3, the axle glazed thread, 4, aperture diaphragm, 5, off-axis ray, 6,, 7 pictures, 8, optical axis as the Fang Jing group.
Embodiment
As shown in Figure 1, the axle glazed thread 3 that the thing 1 of medium wave infrared microscopy object lens sends is through the approximate parallel beam transmission of object space mirror group 2 boil down tos, and process aperture diaphragm 4 incides on the picture Fang Jing group 6, through acting on certain point that is imaged onto on the optical axis 8 as converging of Fang Jing group 6; The off-axis ray 5 that the thing 1 of medium wave infrared microscopy object lens sends incides as on the Fang Jing group 6 through aperture diaphragm 4 through the approximate parallel beam transmission of object space mirror group 2 boil down tos, is imaged onto optical axis 8 certain point in addition through the effect of converging as Fang Jing group 6.All glazed threads that thing 1 sends and off-axis ray pool the picture 7 of microcobjective after by these medium wave infrared microscopy object lens.
Claims (4)
1. two spectroscopy methods for designing of medium wave infrared microscopy object lens, it is characterized in that: with object space mirror group with open as square mirror component, design by telephotolens optical system respectively the directional light imaging, be inverted wherein one group and be combined into the initial configuration of microcobjective, further design the object space telecentric objective of the accuracy of detection that is guaranteed with another group.
2. two spectroscopy methods for designing of medium wave infrared microscopy object lens according to claim 1 is characterized in that: the approximate parallel transmission of light beam between supposition object space mirror group and the picture Fang Jing group; Diaphragm is put in the middle of the image Fang Jing group, helps realizing the telecentric beam path requirement, and convenient control off-axis aberration improves measuring accuracy.
3. two spectroscopy methods for designing of medium wave infrared microscopy object lens according to claim 1 is characterized in that: the optical system enlargement ratio is determined easily, the convenient control of bore.
4. two spectroscopy methods for designing of medium wave infrared microscopy object lens according to claim 1 is characterized in that: can be generalized in condenser, micro-telephotolens and its all band microcobjective design process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101201841A CN102200638A (en) | 2011-05-11 | 2011-05-11 | Dichotomous optical design method of medium-wave infrared microscope objective |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101201841A CN102200638A (en) | 2011-05-11 | 2011-05-11 | Dichotomous optical design method of medium-wave infrared microscope objective |
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| CN102200638A true CN102200638A (en) | 2011-09-28 |
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| CN2011101201841A Pending CN102200638A (en) | 2011-05-11 | 2011-05-11 | Dichotomous optical design method of medium-wave infrared microscope objective |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768365A (en) * | 2017-01-06 | 2017-05-31 | 宁波舜宇红外技术有限公司 | The detection means and detection method responded outside a kind of imaging lens axle |
Citations (7)
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| GB1368700A (en) * | 1971-08-06 | 1974-10-02 | Euratom | Colour-corrected lens system |
| DD136660A1 (en) * | 1978-05-25 | 1979-07-18 | Hannelore Gamradt | SYMMETRIC REVERSE SYSTEM FOR OPTICAL SYSTEMS OF ENDOSCOPES |
| US5412504A (en) * | 1993-10-05 | 1995-05-02 | United States Surgical Corporation | Optical system for an endoscope |
| US6301043B1 (en) * | 1996-07-28 | 2001-10-09 | Karl Storz Gmbh & Co. Kg | Endoscope with at least one reversal system with a non-homogeneous refraction index |
| US6490085B1 (en) * | 2001-02-21 | 2002-12-03 | Richard Wolf Gmbh | Symmetric anastigmatic endoscope relay system |
| US20040114223A1 (en) * | 2002-10-25 | 2004-06-17 | Ulrich Sander | Zoom system |
| CN101438197A (en) * | 2006-05-05 | 2009-05-20 | 卡尔蔡司微成像有限责任公司 | Microscope objective |
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- 2011-05-11 CN CN2011101201841A patent/CN102200638A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1368700A (en) * | 1971-08-06 | 1974-10-02 | Euratom | Colour-corrected lens system |
| DD136660A1 (en) * | 1978-05-25 | 1979-07-18 | Hannelore Gamradt | SYMMETRIC REVERSE SYSTEM FOR OPTICAL SYSTEMS OF ENDOSCOPES |
| US5412504A (en) * | 1993-10-05 | 1995-05-02 | United States Surgical Corporation | Optical system for an endoscope |
| US6301043B1 (en) * | 1996-07-28 | 2001-10-09 | Karl Storz Gmbh & Co. Kg | Endoscope with at least one reversal system with a non-homogeneous refraction index |
| US6490085B1 (en) * | 2001-02-21 | 2002-12-03 | Richard Wolf Gmbh | Symmetric anastigmatic endoscope relay system |
| US20040114223A1 (en) * | 2002-10-25 | 2004-06-17 | Ulrich Sander | Zoom system |
| CN101438197A (en) * | 2006-05-05 | 2009-05-20 | 卡尔蔡司微成像有限责任公司 | Microscope objective |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768365A (en) * | 2017-01-06 | 2017-05-31 | 宁波舜宇红外技术有限公司 | The detection means and detection method responded outside a kind of imaging lens axle |
| CN106768365B (en) * | 2017-01-06 | 2019-07-23 | 宁波舜宇红外技术有限公司 | A kind of detection device and detection method that imaging lens axis responds outside |
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Application publication date: 20110928 |