CN207232498U - Linear dispersion optical frames for confocal spectroscopic measurement - Google Patents
Linear dispersion optical frames for confocal spectroscopic measurement Download PDFInfo
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- CN207232498U CN207232498U CN201721174624.0U CN201721174624U CN207232498U CN 207232498 U CN207232498 U CN 207232498U CN 201721174624 U CN201721174624 U CN 201721174624U CN 207232498 U CN207232498 U CN 207232498U
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Abstract
A kind of linear dispersion optical frames for confocal spectroscopic measurement, including negative lens group and positive lens groups, the negative lens group and positive lens groups are coaxially disposed, and the negative lens group is identical with the focal length of positive lens groups, and it is oppositely arranged, the negative lens group is located at light source side, for producing image space dispersion, as the object space dispersion of positive lens groups, the positive lens groups are located at testee side.This reality has and new has the advantages that axial chromatic dispersion versus wavelength has preferable linear relationship.
Description
Technical field
A kind of confocal spectroscopic sensor is the utility model is related to, can especially produce axial dispersion is used for confocal spectroscopic
The linear dispersion optical frames of measurement.
Background technology
The axial dispersion of confocal spectroscopic sensor is produced by dispersing optics mirror, and therefore, the performance of dispersing optics mirror is certain
The measuring range and resolution of instrument is determined in degree.The dispersing optics mirror of confocal spectroscopic measuring instrument but requires to produce in object space
Big axial chromatic aberration.At present, some researchers add dispersion element to obtain axial chromatic aberration (dispersion) using business microcobjective,
There are dispersion object lens of researcher's design dedicated for confocal spectroscopic measuring instrument.Such as give the color using diffraction element light splitting design
Object lens are dissipated, also there are the dispersion object lens for devising a kind of three-chip type, in addition also has and is designed using high-dispersion glass and cemented doublet
A kind of dispersion object lens, the axial chromatic dispersion versus wavelength studied above are not linear relationships, have impact on confocal spectroscopic measurement
The performances such as sensitivity of the instrument in measurement range, resolving power.Its reason is the refractive index of glass and wavelength into non-linear relation,
If object lens are only made of a kind of lens of material, its axial chromatic dispersion versus wavelength still keeps non-linear relation.Although diffraction optics is first
The chromatic dispersion versus wavelength of part is linear；But there are larger spherical aberration for diffraction optical element, it is impossible to is used alone as dispersion object lens, palpus
Lens correction spherical aberration is equipped with, and refractor can destroy the linear relationship between diffraction chromatic dispersion versus wavelength.Therefore, axial dispersion is designed
It is most important to confocal spectroscopic measuring instrument with the linear refractive objective lens of wavelength.
Utility model content
In order to overcome the above problem, the utility model provides a kind of linear dispersion light for confocal spectroscopic measurement to society
Mirror is learned, experiments prove that the axial chromatic dispersion versus wavelength of the new linear dispersion optical frames of this practicality is into preferable linear relationship.
The technical solution of the utility model is：A kind of linear dispersion optical frames for confocal spectroscopic measurement is provided, including
Negative lens group and positive lens groups, the negative lens group and positive lens groups are coaxially disposed, and the negative lens group and positive lens groups
Focal length is identical, and oppositely arranged, and the negative lens group is located at light source side, for producing image space dispersion, as positive lens groups
Object space dispersion, the positive lens groups are located at testee side.
As the improvement to the utility model, the positive lens groups are the aplanatic structures for reducing spherical aberration.
As the improvement to the utility model, the negative lens group includes the first negative lens piece, the second negative lens piece and
Three negative lens pieces, arrange successively from incident light direction.
As the improvement to the utility model, the positive lens groups include the first positive lens piece, the second positive lens piece, the 3rd
Positive lens piece and the 4th positive lens piece, arrange successively from incident light direction.
The utility model is coaxially disposed as a result of negative lens group and positive lens groups, and the negative lens group and positive lens
The identical and oppositely arranged structure of focal length of group so that the axial chromatic dispersion versus wavelength of the utility model has preferable linear relationship.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of embodiment of the utility model.
Fig. 2 is the linear dispersion lab diagram of the utility model.
Embodiment
In the description of the utility model, it is to be understood that " " center ", " on " in term, " under ", "front", "rear",
The orientation or position relationship of the instructions such as "left", "right" are based on orientation shown in the drawings or position relationship, are for only for ease of and retouch
State the utility model and simplify and describe, rather than instruction or imply signified device or component must have specific orientation, with
Specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, term " first ", " second "
Description purpose is only used for, and it is not intended that instruction or hint relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model
Dress ", " connection ", " connected " should be interpreted broadly, for example, it may be being fixedly connected or dismantling connection, or integratedly be connected
Connect；Can mechanically connect or be electrically connected；It can be directly connected or be indirectly connected by intermediary,
It can be the connection of two component internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
Fig. 1 is referred to, the utility model provides the linear dispersion optical frames for being used for confocal spectroscopic measurement, including negative lens group
1 and positive lens groups 2, the negative lens group 1 and positive lens groups 2 are coaxially disposed, and Jiao of the negative lens group 1 and positive lens groups 2
Away from identical and oppositely arranged, the negative lens group 1 is located at 3 side of light source, for producing image space dispersion, as positive lens groups 2
Object space dispersion, the positive lens groups 2 are located at 4 side of testee.The negative lens group 1 includes the first negative lens piece 11, and second
12 and the 3rd negative lens piece 13 of negative lens piece, arranges successively from incident light direction, and such as the first negative lens piece 11 can use model
For the glass lens of ZF72A, the second negative lens piece 12 can use the glass lens of model FK71, and the 3rd negative lens piece 13 can
With using the glass lens of model LAF4.The positive lens groups 2 include the first positive lens piece 21, the second positive lens piece 22,
Three positive lens pieces 23 and the 4th positive lens piece 24, arrange successively from incident light direction, and the first positive lens piece 21 can use
The glass lens of model ZF72A, the second positive lens piece 22 and the 3rd positive lens piece 23 can be using model LAF4's
Glass lens, the 4th positive lens piece 24 can use the glass lens of model FK71.
Preferably, the positive lens groups 2 are the aplanatic structures for reducing spherical aberration.
Fig. 2 is referred to, Fig. 2 is the linear dispersion lab diagram of the utility model.Experiment condition, using the line of the utility model
Property dispersing optics mirror, diffraction grating spectrometer using mobile phone dorsal shield as test object, often moves 15um spectra re-recorded data, leads to
Cross numerical fitting and obtain corresponding peak wavelength, and then obtain dispersion and the peak wavelength of Spectral Confocal linear dispersion optical frames
Survey correspondence.Figure it is seen that measured result is very identical with optical design result, actual measurement is reached and has required, in figure
Dotted line is measured value, and solid line is design load.
Aplanatic structure lens in the utility model, refer to the transparent mirror using two refractive curvatures as border.
Claims (4)
- A kind of 1. linear dispersion optical frames for confocal spectroscopic measurement, it is characterised in that：Including negative lens group（1）And positive lens Group（2）, the negative lens group（1）And positive lens groups（2）It is coaxially disposed, and the negative lens group（1）And positive lens groups（2）Jiao Away from identical and oppositely arranged, the negative lens group（1）Light source side is located at, for producing image space dispersion, as positive lens groups （2）Object space dispersion, the positive lens groups（2）It is located at testee side.
- 2. the linear dispersion optical frames according to claim 1 for confocal spectroscopic measurement, it is characterised in that：It is described just saturating Microscope group（2）It is the aplanatic structure for reducing spherical aberration.
- 3. the linear dispersion optical frames according to claim 1 or 2 for confocal spectroscopic measurement, it is characterised in that：It is described Negative lens group（1）Including the first negative lens piece（11）, the second negative lens piece（12）With the 3rd negative lens piece（13）, from incident light side To arranging successively.
- 4. the linear dispersion optical frames according to claim 1 or 2 for confocal spectroscopic measurement, it is characterised in that：It is described Positive lens groups（2）Including the first positive lens piece（21）, the second positive lens piece（22）, the 3rd positive lens piece（23）With the 4th positive lens Piece（24）, arrange successively from incident light direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721174624.0U CN207232498U (en) | 2017-09-14 | 2017-09-14 | Linear dispersion optical frames for confocal spectroscopic measurement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721174624.0U CN207232498U (en) | 2017-09-14 | 2017-09-14 | Linear dispersion optical frames for confocal spectroscopic measurement |
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| CN207232498U true CN207232498U (en) | 2018-04-13 |
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| CN201721174624.0U Active CN207232498U (en) | 2017-09-14 | 2017-09-14 | Linear dispersion optical frames for confocal spectroscopic measurement |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535846A (en) * | 2018-06-19 | 2018-09-14 | 南京引创光电科技有限公司 | A kind of dispersion collimator objective |
| WO2021042306A1 (en) * | 2019-09-04 | 2021-03-11 | 深圳市海谱纳米光学科技有限公司 | Optical lens and optical device |
| CN117826371A (en) * | 2024-01-05 | 2024-04-05 | 浙江大学宁波“五位一体”校区教育发展中心 | Compact spectral confocal measuring lens with long working distance and spectral confocal sensor |
-
2017
- 2017-09-14 CN CN201721174624.0U patent/CN207232498U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535846A (en) * | 2018-06-19 | 2018-09-14 | 南京引创光电科技有限公司 | A kind of dispersion collimator objective |
| CN108535846B (en) * | 2018-06-19 | 2024-06-11 | 南京引创光电科技有限公司 | Chromatic dispersion collimating objective lens |
| WO2021042306A1 (en) * | 2019-09-04 | 2021-03-11 | 深圳市海谱纳米光学科技有限公司 | Optical lens and optical device |
| CN117826371A (en) * | 2024-01-05 | 2024-04-05 | 浙江大学宁波“五位一体”校区教育发展中心 | Compact spectral confocal measuring lens with long working distance and spectral confocal sensor |
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Address after: 523000 No.3, West Zhongnan Road, Haibin District, Shangsha, Chang'an Town, Dongguan City, Guangdong Province Patentee after: Guangdong Samson Technology Co.,Ltd. Address before: 523000 No.3, West Zhongnan Road, Haibin District, Shangsha, Chang'an Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN SAMSUN OPTICAL TECHNOLOGY Co.,Ltd. |
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