CN205506690U - Raman probe 's auto focus device - Google Patents
Raman probe 's auto focus device Download PDFInfo
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- CN205506690U CN205506690U CN201620225184.6U CN201620225184U CN205506690U CN 205506690 U CN205506690 U CN 205506690U CN 201620225184 U CN201620225184 U CN 201620225184U CN 205506690 U CN205506690 U CN 205506690U
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- lens
- light filter
- optical filter
- light
- raman probe
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Abstract
The utility model relates to a raman probe's auto focus device, its characterized in that: arrange first lens in proper order along optic fibre input direction of light, first light filter, the second light filter, the third light filter, focusing lens, first lens, first light filter, the second light filter, focusing lens is perpendicular with the light path, the third light filter becomes 45 with the light path, the fourth light filter is placed perpendicularly to direction along third light filter reverberation, 45 speculum is arranged to fourth light filter opposite side, be that the third light filter is parallel with the speculum, arrange the 5th light filter and second lens perpendicularly on speculum reflected light path, focusing lens fixed connection is on the lens mount, and the lens mount passes through the lead screw to be connected with step motor, and the second lens coupling gets into optic fibre. It can be strong and weak according to the signal, and the initiative focusing mechanism of automatically regulated lens is easy to assemble before raman probe, and convenient to carry is rational in infrastructure, and to the lightweight of experiment facility, convenience, maneuverability's many -side all has apparent promotion.
Description
Technical field
This utility model relates to the automatic focusing mechanism of a kind of Raman probe, belongs to field of photoelectric technology.
Background technology
At present, most of Raman probe products are all fixed focus design, and the power density of the raman spectrum strength collected from spectrogrph and laser has and directly contacts.Wanting to obtain the strongest Raman spectrum and just laser must be focused on accurately object under test surface, namely laser focusing plane overlaps with tested surface.Such as Raman micro measurement platform, operator just can find focal position of laser by the way of CCD imaging easily.But, for using Raman probe user measured directly, it is desirable to finding the focal position of laser can be comparatively laborious, operator can only be by the hand-held focusing mode moved up and down.Such mode of operation easily causes the fatigue of user, and is also unprofitable to the stably measured of data, and stationarity is bad, thus causes Raman signal intensity fluctuated, affects the correct judgement to data.
Also there is some researcher to propose, set up the scheme of Z axis auto-focusing detection platform, but this method significantly limit the use environment of automatic focusing mechanism, it is impossible to serve mobile detection, and the user of outdoor detection needs.
Summary of the invention
The utility model proposes the automatic focusing mechanism of a kind of Raman probe, it can be strong and weak according to signal, it is automatically adjusted the active focusing mechanism of lens, before being easily installed in Raman probe, easy to carry, rational in infrastructure, for the lightweight of Experimental Establishment, convenience, the many-side of operability is obviously improved.
The technical solution of the utility model is achieved in that the automatic focusing mechanism of Raman probe, it is characterized in that: the direction along optical fiber input light is sequentially arranged the first lens, first optical filter, second optical filter, 3rd optical filter, condenser lens, first lens, first optical filter, second optical filter, condenser lens is vertical with light path, 3rd optical filter is at 45 ° with light path, direction along the 3rd optical filter reflection light is disposed vertically the 4th optical filter, 4th optical filter opposite side arranges the reflecting mirror of 45 °, i.e. the 3rd optical filter and mirror parallel, reflecting mirror reflected light path is arranged vertically the 5th optical filter and the second lens；Condenser lens is fixedly connected on lens mount, and lens mount is connected with motor by leading screw, and the second Lens Coupling enters optical fiber.
Good effect of the present utility model is, it can be strong and weak according to signal, is automatically adjusted the active focusing mechanism of lens, it is easily installed in Raman probe front end, easy to carry, rational in infrastructure, for the lightweight of Experimental Establishment, convenience, the many-side such as operability is obviously improved.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further described: as shown in Figure 1, the automatic focusing mechanism of Raman probe, it is characterized in that: the direction inputting light along optical fiber 1 is sequentially arranged the first lens 2, first optical filter 3, second optical filter 4, 3rd optical filter 5, condenser lens 7, first lens 2, first optical filter 3, second optical filter 4, condenser lens 7 is vertical with light path, 3rd optical filter 5 is at 45 ° with light path, the direction reflecting light along the 3rd optical filter 5 is disposed vertically the 4th optical filter 10, 4th optical filter 10 opposite side arranges the reflecting mirror 11 of 45 °, i.e. the 3rd optical filter 5 is parallel with reflecting mirror 11, reflecting mirror 11 reflected light path is arranged vertically the 5th optical filter 12 and the second lens 13；Condenser lens 7 is fixedly connected on lens mount 8, and lens mount 8 is connected with motor 9 by leading screw 6, and the second Lens Coupling enters optical fiber 1.
Laser, after fiber optic conduction enters Raman probe, is become directional light by the first lens 2, is then passed through the second optical filter 4 and the 3rd optical filter 5 is purified process to spectrum, focus on sample via condenser lens 7；Raman scattering is there is in sample after laser excitation, scattered light and reflection light opposite direction enter Raman probe and are collected by condenser lens 7, the lens set that wherein Raman scattering light transmission is made up of the 3rd optical filter the 5, the 4th optical filter 10, reflecting mirror the 11, the 5th optical filter 12, is finally coupled into optical fiber 1 by the second lens 13；Non-Raman signal is then stopped (reflect or absorb) by lens set, therefore can not arrive the second lens 13.The Raman diffused light being coupled into optical fiber 1 can obtain maximum Raman light intensity by drive motor regulation focusing lens positions via software processes.
Described automatic focusing module is installed on Raman probe front end face, and Raman probe is irremovable after being connected with Focusing module, sets lens driver in automatic focusing module；Whether by comparison judgement sample at focal point, if not at focal point, software sends instruction control lens and drives motor to make corresponding reaction.
Claims (1)
1. the automatic focusing mechanism of Raman probe, it is characterized in that: the direction along optical fiber input light is sequentially arranged the first lens, first optical filter, second optical filter, 3rd optical filter, condenser lens, first lens, first optical filter, second optical filter, condenser lens is vertical with light path, 3rd optical filter is at 45 ° with light path, direction along the 3rd optical filter reflection light is disposed vertically the 4th optical filter, 4th optical filter opposite side arranges the reflecting mirror of 45 °, i.e. the 3rd optical filter and mirror parallel, reflecting mirror reflected light path is arranged vertically the 5th optical filter and the second lens；Condenser lens is fixedly connected on lens mount, and lens mount is connected with motor by leading screw, and the second Lens Coupling enters optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620225184.6U CN205506690U (en) | 2016-03-23 | 2016-03-23 | Raman probe 's auto focus device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620225184.6U CN205506690U (en) | 2016-03-23 | 2016-03-23 | Raman probe 's auto focus device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205506690U true CN205506690U (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620225184.6U Expired - Fee Related CN205506690U (en) | 2016-03-23 | 2016-03-23 | Raman probe 's auto focus device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205506690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383105A (en) * | 2016-08-29 | 2017-02-08 | 上海交通大学 | Raman spectrum measuring device and method capable of automatically adjusting distance between device and measured sample |
-
2016
- 2016-03-23 CN CN201620225184.6U patent/CN205506690U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383105A (en) * | 2016-08-29 | 2017-02-08 | 上海交通大学 | Raman spectrum measuring device and method capable of automatically adjusting distance between device and measured sample |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20200323 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |