CN109856053A - A kind of ultra-thin spectrometer optical model based on CT structure - Google Patents
A kind of ultra-thin spectrometer optical model based on CT structure Download PDFInfo
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- CN109856053A CN109856053A CN201910230671.XA CN201910230671A CN109856053A CN 109856053 A CN109856053 A CN 109856053A CN 201910230671 A CN201910230671 A CN 201910230671A CN 109856053 A CN109856053 A CN 109856053A
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- thin
- cylindrical lens
- optical model
- spectrometer
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Abstract
The invention discloses a kind of ultra-thin spectrometer optical model based on CT structure comprising light source, the first cylindrical lens, collimating mirror, grating, focus lamp, the second cylindrical lens and the linear array detector being arranged successively.Optical model of the invention has the advantages that high throughput, high-resolution, micromation and the optical path range in sagitta of arc direction are ultra-thin.
Description
Technical field
The invention belongs to spectral instrument optical model design fields, and in particular to a kind of ultra-thin spectrometer based on CT structure
Optical model.
Background technique
Currently, either domestic or external in the market, the light path of optical spectrometer based on CT structure is designed to mainstream, has
The spectrometer of the advantages that high-throughput, high-resolution and micromation is also increasingly by the welcome of consumer.Have both simultaneously it is high-throughput,
The spectrometer of high-resolution and micromation advantage also becomes the following spectrometer development trend.
Traditional spectrometer based on CT structure, the light issued from light source, just can be carried out collimation by collimating mirror, this alignment
The curvature design of straight mirror proposes very high request, simultaneously as the collimating mirror of traditional CT structure and light source distance are farther out, causes subsequent
Optical path increases in the sagitta of arc direction height of grating and focus lamp.This be also restrict spectrometer micromation a great influence because
Element.
Summary of the invention
In order to solve the deficiency of traditional CT structure light spectrometer light path design, it is super based on CT structure that the present invention provides a kind of
Glimmer spectrometer optical model, it is intended to the advantages of making it while having both high-throughput, high-resolution and micromation.
The present invention is to realize goal of the invention, is adopted the following technical scheme that
The invention discloses a kind of ultra-thin spectrometer optical model based on CT structure, it is characterized in that: including successively arranging
The light source of column, the first cylindrical lens, collimating mirror, grating, focus lamp, the second cylindrical lens and linear array detector.
The beneficial effects of the present invention are:
(1) light path design model proposed by the present invention has the characteristics that simple, easily operated, compares and conventional spectrometers light
Road design, Primary Component-cylindrical lens according to the present invention significantly reduce mechanical add as present technique is more and more mature
Work cost, effect achieved are better than spherical mirror.
(2) cylindrical lens are added in the optical path model of traditional CT structure light spectrometer in the present invention, and cylindrical lens are added in light source respectively
Between collimating mirror, focus lamp and linear array detector, in the case where keeping numerical aperture to be 0.22, can still it reach
To making entire optical path and have both high-throughput, high-resolution and miniature simultaneously in the effect of the height value between 4mm in sagitta of arc direction
The characteristics of change.
Detailed description of the invention
Fig. 1 is optical model schematic diagram of the invention, and figure label: 1 is light source；2 be the first cylindrical lens；3 be collimating mirror；
4 be grating；5 be focus lamp；6 be the second cylindrical lens；7 be linear array detector；
Fig. 2 is that the optical path Contrast on effect of optical model structure of the present invention and optical path model structure when removing cylindrical lens is illustrated
Figure；
Fig. 3 is that the present invention shows high-resolution schematic diagram.
Specific embodiment
The present invention is described in detail for explanation and specific embodiment with reference to the accompanying drawing.
As shown in Figure 1, a kind of ultra-thin spectrometer optical model based on CT structure, including the light source 1, first being arranged successively
Cylindrical lens 2, collimating mirror 3, grating 4, focus lamp 5, the second cylindrical lens 6 and linear array detector 7.
The present invention reaches the light path control for making entire sagitta of arc direction by the way that cylindrical lens are added between light source and collimating mirror
Between 4mm, the size of collimating mirror and focus lamp can be greatly reduced, so that entire spectrometer device is smaller, is reached
To the effect of micromation；Meanwhile the cylindrical lens being added between focus lamp and linear array detector make the light for reaching detector
Show high-throughput advantage.
In specific implementation, in order to preferably show advantages of the present invention, following parameter is set: collimation curvature radius choosing
For 84mm, and collimating mirror is set as cylinder；Grating is 900 lines pair, positive 1 grade of diffraction；It focuses curvature radius and is selected as 136mm；Column
Lens radius of curvature is 2mm, and glass material is selected as k9；Numerical aperture is 0.22；Select tri- wavelength of 700nm, 900nm, 1100nm.
Shown in entire optical path effect such as Fig. 2 (a).The advantages of in order to show micromation, by two cylindrical lens in optical model of the present invention
Remove, and numerical aperture is changed to 0.05, shown in optical path effect such as Fig. 2 (b).As can be seen that Fig. 2 from zemax data
(a) optical path range is within 4mm in, in Fig. 2 (b) within optical path range 6mm.
Such as Fig. 3, selection wavelength is 900 and 900.5nm, checks point range figure, it can be seen that under the difference of 0.5nm, this hair
Bright optical model is still able to maintain higher resolution ratio.
The above content is combine specific embodiment to the further description of the invention made, and it cannot be said that the present invention
Specific implementation be only limited to these explanations.For those of ordinary skill in the art to which the present invention belongs, this is not being departed from
Under the premise of the designed optical model of invention, simple replacement can also be made and modification of dimension all shall be regarded as belonging to the present invention
Protection scope.
Claims (1)
1. a kind of ultra-thin spectrometer optical model based on CT structure, it is characterised in that: including be arranged successively light source (1),
One cylindrical lens (2), collimating mirror (3), grating (4), focus lamp (5), the second cylindrical lens (6) and linear array detector (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910230671.XA CN109856053A (en) | 2019-03-26 | 2019-03-26 | A kind of ultra-thin spectrometer optical model based on CT structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910230671.XA CN109856053A (en) | 2019-03-26 | 2019-03-26 | A kind of ultra-thin spectrometer optical model based on CT structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109856053A true CN109856053A (en) | 2019-06-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910230671.XA Pending CN109856053A (en) | 2019-03-26 | 2019-03-26 | A kind of ultra-thin spectrometer optical model based on CT structure |
Country Status (1)
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| CN (1) | CN109856053A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011137316A3 (en) * | 2010-04-30 | 2012-03-01 | University Of Rochester | Broad band czerny-turner spectrometer, methods, and applications |
| EP2051050B1 (en) * | 2007-10-17 | 2013-07-31 | Horiba Jobin Yvon Inc | Spectrometer with cylindrical lens for astigmatism correction and demagnification |
| CN103557939A (en) * | 2013-09-26 | 2014-02-05 | 中国科学院安徽光学精密机械研究所 | Small-sized echelette grating spectrometer |
-
2019
- 2019-03-26 CN CN201910230671.XA patent/CN109856053A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2051050B1 (en) * | 2007-10-17 | 2013-07-31 | Horiba Jobin Yvon Inc | Spectrometer with cylindrical lens for astigmatism correction and demagnification |
| WO2011137316A3 (en) * | 2010-04-30 | 2012-03-01 | University Of Rochester | Broad band czerny-turner spectrometer, methods, and applications |
| CN103557939A (en) * | 2013-09-26 | 2014-02-05 | 中国科学院安徽光学精密机械研究所 | Small-sized echelette grating spectrometer |
Non-Patent Citations (2)
| Title |
|---|
| 夏果等: "微型光谱仪增益及读出噪声的测量方法", 《光学学报》 * |
| 王国栋等: "便携式紫外-可见光谱仪设计及关键技术研究", 《光电工程》 * |
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Application publication date: 20190607 |