CN2454767Y - Mechanical-scanning type high-speed spectrum collector - Google Patents
Mechanical-scanning type high-speed spectrum collector Download PDFInfo
- Publication number
- CN2454767Y CN2454767Y CN 00267064 CN00267064U CN2454767Y CN 2454767 Y CN2454767 Y CN 2454767Y CN 00267064 CN00267064 CN 00267064 CN 00267064 U CN00267064 U CN 00267064U CN 2454767 Y CN2454767 Y CN 2454767Y
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- China
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- rotation axis
- utility
- model
- slits
- light path
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- Expired - Fee Related
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Abstract
The utility model discloses a mechanical-scanning type high-speed spectrum collecting device, which comprises a plurality of slits which are successively arranged on a light channel, a photomultiplier tube arranged in a window position, wherein, a plurality of slits follow a rotating shaft; particularly, one end of the rotating shaft is provided with an encoder for an optical electric shaft angle; the other end of the rotating shaft is provided with a rotating drum; the slits are arranged on the drum wall of the rotating drum; a reflecting mirror is arranged on the light channel in the rotating drum. The utility model has the advantage of high measuring precision, and can conveniently change collecting rate. The utility model is especially suitable for occasions needing high-speed high-capacity collection of spectrum data, and is particularly suitable for measuring systems with long light path and differential absorption for air pollution monitoring.
Description
The utility model relates to a kind of mechanical scanning type high speed spectrum harvester.
Spectral analysis has a wide range of applications in various fields such as scientific research, environmental protection, and spectra collection device wherein plays an important role again.High speed acquisition device commonly used at present mostly is portable many slits and photomultiplier is set in the light path of spectrometer, wherein, many slits by evenly be installed in the coaxial disk card of rotation axis on, also pierce on this card to have and use synchronous hole with the supporting location of optoelectronic switch.The weak point of this device is, at first, the hole bearing accuracy is relatively poor synchronously, cause the initial collection point of every slit that " wow and flutter " takes place, secondly, every slit has only synchronizing signal of starting point, the collection of the data that it is follow-up is in " blindly " state, once more, because disk exists the rotation problem of non-uniform inevitably, this just easily causes the collection positioning error of each data will be bigger; In addition, be installed in the slit on the disk card, have trickle inclination when the approach window, this has also increased the error of gathering, and has reduced the resolution of spectral edges part.
The purpose of this utility model provides the high mechanical scanning type high speed spectrum harvester of a kind of precision.
For achieving the above object, the utility model comprises photomultiplier that set gradually on the light path and many slits rotation axis servo-actuated, window place, particularly an end of rotation axis is that optical electric axial angle encoder, the other end are turning barrel, slit places on the bucket wall of turning barrel, is equipped with catoptron on the light path in the turning barrel.
As further improvement of the utility model, described catoptron is two plane mirrors that all are 45 degree with light path; Described rotation axis is connected with synchronous motor through driving-belt; Described slit is 20; The axially parallel of described slit and rotation axis.
After adopting such structure, because it is all coaxial with rotation axis to be equipped with the turning barrel of slit on optical electric axial angle encoder and its, so spectra collection initiating signal that the zero pulse of optical electric axial angle encoder output and count pulse promptly can be used as every slit, and the collection of each data all has count pulse that " location " is provided, both avoided the problem of synchronous hole bearing accuracy difference, the inhomogeneous caused collection positioning error of rotation of the turning barrel at slit place is eliminated; Again because slit is on the bucket wall of turning barrel, and again with axially the paralleling of rotation axis, thereby the Acquisition Error of having avoided the position attitude because of slit to increase; Because rotation axis is connected with synchronous motor through driving-belt,, can change the speed of collection again by changing the ratio of gear of rotation axis and synchronous motor more conveniently.In addition, also adopted single-chip microcomputer that the output signal of optical electric axial angle encoder is handled, it more conveniently is connected with the computer data acquiring card.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is a kind of basic structure synoptic diagram of the present utility model.
Referring to Fig. 1, have 10 * 25 millimeters window 2 on the housing 1, photomultiplier 3 places on the light path 9 at window 2 places.Rotation axis 5 and rotating speed are housed are 1500 rev/mins synchronous motor 8 on the housing 1,8 of rotation axis 5 and synchronous motors are that 5 to 1 driving-belt 7 is connected by ratio of gear.One end of rotation axis 5 is that optical electric axial angle encoder 6, the other end are turning barrel 10, and wherein, the diameter of turning barrel 10 is 169 millimeters, and 20 slits 11 are evenly distributed on the bucket wall of turning barrel 10, and this barrel wall is positioned on the light path 9 of directive window 2.On the light path 9 of 2 of turning barrel 10 and windows, also be equipped with two and all be the plane mirrors 4 that miter angle is provided with light path 9.
During use, only need energized and input light signal to be collected, can obtain the spectral signal of being surveyed from photomultiplier 3.
Claims (5)
1, a kind of mechanical scanning type high speed spectrum harvester, comprise that set gradually on the light path (9) and many slits (11) rotation axis (5) servo-actuated, the photomultiplier (3) that window (2) is located, it is characterized in that: an end of rotation axis (5) is that optical electric axial angle encoder (6), the other end are turning barrel (10), slit (11) places on the bucket wall of turning barrel (10), is equipped with catoptron (4) on the light path (9) in the turning barrel (10).
2, device according to claim 1 is characterized in that catoptron (4) is two plane mirrors that all are 45 degree with light path (9).
3, device according to claim 1 is characterized in that rotation axis (5) is connected with synchronous motor (8) through driving-belt (7).
4, device according to claim 1 is characterized in that slit (11) is 20.
5, device according to claim 4 is characterized in that the axially parallel of slit (11) and rotation axis (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00267064 CN2454767Y (en) | 2000-12-19 | 2000-12-19 | Mechanical-scanning type high-speed spectrum collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00267064 CN2454767Y (en) | 2000-12-19 | 2000-12-19 | Mechanical-scanning type high-speed spectrum collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2454767Y true CN2454767Y (en) | 2001-10-17 |
Family
ID=33620987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00267064 Expired - Fee Related CN2454767Y (en) | 2000-12-19 | 2000-12-19 | Mechanical-scanning type high-speed spectrum collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2454767Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101688808B (en) * | 2007-07-31 | 2012-01-25 | 日本电信电话株式会社 | Spectroscope |
| CN105026901A (en) * | 2013-03-13 | 2015-11-04 | 康宁股份有限公司 | Hyperspectral imaging systems and methods for imaging a remote object |
-
2000
- 2000-12-19 CN CN 00267064 patent/CN2454767Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101688808B (en) * | 2007-07-31 | 2012-01-25 | 日本电信电话株式会社 | Spectroscope |
| CN105026901A (en) * | 2013-03-13 | 2015-11-04 | 康宁股份有限公司 | Hyperspectral imaging systems and methods for imaging a remote object |
| CN105026901B (en) * | 2013-03-13 | 2018-05-11 | 康宁股份有限公司 | For the Hyperspectral imager and method being imaged to remote object |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |