CN202869965U - Optical splitting device with continuously adjustable wavelength - Google Patents
Optical splitting device with continuously adjustable wavelength Download PDFInfo
- Publication number
- CN202869965U CN202869965U CN 201220539908 CN201220539908U CN202869965U CN 202869965 U CN202869965 U CN 202869965U CN 201220539908 CN201220539908 CN 201220539908 CN 201220539908 U CN201220539908 U CN 201220539908U CN 202869965 U CN202869965 U CN 202869965U
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- light
- diffraction grating
- splitting
- optical splitting
- light splitting
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Abstract
An optical splitting device with continuously adjustable wavelength comprises a light source curved reflector (2), a moving diaphragm (3), a reflector (5), an optical splitting curved reflector (6), a diffraction grating (7), a lead-out convex mirror (8), a diaphragm and grating moving device (9), and an optical splitting single color body (10), wherein the light source curved reflector (2), the moving diaphragm (3), a light inlet hole (4) and the reflector (5) are arranged on the same optical axis; the optical splitting curved reflector (6) and the diffraction grating (7) are mounted on the same optical axis; the optical splitting curved reflector (6) is arranged on the same optical axis with both the lead-out convex mirror (8.2) and a light outlet hole (8.1) arranged in the optical splitting single color body (10); the diaphragm and grating moving device (9) consists of a rotation shaft (9.1), a pull cord (9.3) and a pulley (9.2); and the rotation shaft (9.1) has a transmission relationship with the pulley (9.2) and the diffraction grating (7) at the same time. The optical splitting device provided by the utility model solves the problem that the conventional element analyzer can not adjust the wavelength continuously.
Description
Technical field
What the technical program related to is the continuous adjustable light splitting device of a kind of wavelength.
Background technology
At present, most domestic enterprise photoelectric colorimetry elemental analyser commonly used has easily advantage of lower, the easy Operation and maintenance of price, but also has following defective: 1) measure wavelength for default fixing, and can not be adjustable continuously; 2) measurement light source mostly is greatly D. C. bulb and adds optical filter or cold light source luminous diode, and its wavelength accuracy is relatively poor.The wavelength accuracy that D. C. bulb adds the optical filter mode depends on optical filter, and interference filter seldom is applied to elemental analyser owing to expensive, and the optical filters such as cut-off type that elemental analyser is used mostly, what effect was best also can only reach ± 15nm; The wavelength accuracy of cold light source luminous diode depends on the diode of use, error range is at 20～30nm mostly, minority adopts the error of the special cold light source luminous diode of having made to order to can be ± 5nm, but not that the interior all wavelengths of 400～750nm scope can be had made to order, so that the measurement of some element-specific is met difficulty.3. though spectrophotometer can be avoided the problems referred to above, its analysis operation is very inconvenient, and curve is set up modification and as a result direct-reading shows all do not have elemental analyser conveniently, is not suitable for enterprise's on-the site analysis and detects.
The utility model content
The technical program will solve be exactly existing photoelectric colorimetry elemental analyser wavelength can not be adjustable continuously, and the not high problem of wavelength accuracy provides a kind of wavelength adjustable light splitting device for the metal analysis instrument
The technical program is made of light source cambered surface reflective mirror (2), mobile light hurdle (3), reflective mirror (5), light splitting cambered surface catoptron (7), diffraction grating (7), derivation convex lens (8), light hurdle grating mobile device (9) and the monochromatic body of light splitting (10); Have light well (4) and light hole (8.1) on the monochromatic body of light splitting (10), light source cambered surface reflective mirror (2), mobile light hurdle (3), light well (4), reflective mirror (5) are arranged on the same optical axis; Light splitting cambered surface catoptron (6), diffraction grating (7) are installed on the same optical axis, are positioned at the monochromatic body (10) of light splitting; Light splitting cambered surface catoptron (6) also is on the same optical axis with the derivation convex lens (8.2) and the light hole (8.1) that also are positioned at the monochromatic body of light splitting (10) simultaneously; Under light hurdle grating mobile device (9) drove, mobile light hurdle (3) and diffraction grating (7) were done respectively traveling priority and rotation; Light hurdle grating mobile device 9 is comprised of the rotating shaft (9.1) of stretching out the monochromatic body of light splitting (10) and backguy (9.3) and pulley (9.2), rotating shaft (9.1) and when pulley (9.2) forms drive connection, also with diffraction grating (7) engagement and form drive connection.
The technical program is simple in structure, easy to use, after the metal analysis instrument adopts the technical program, can fundamentally solve the traditional element analyser and adopt D. C. bulb to add optical filter or fixed wave length light emitting diode as light source, the wavelength that brings is the adjustable and not high problem of precision continuously.
Description of drawings
Fig. 1 is structure and the fundamental diagram of the light-dividing device of the technical program.
Embodiment
Referring to Fig. 1, structure and the principle of work of the described wavelength adjustable light splitting of the technical program device are, light source 1 is comprised of the iodine-tungsten lamp that can launch the long visible light of all-wave or light emitting diode, the light that light source sends is by light source cambered surface reflective mirror 2 focus reflections, by the light hurdle 3 of all band (subregion) optical filter is housed, enter the monochromatic body 10 of light splitting by light-conductive hole; Light reflexes to light splitting cambered surface reflective mirror 6 by reflective mirror 5, again by returning light splitting cambered surface reflective mirror 6 focus reflections after diffraction grating 7 light splitting, draw the comparator block (not shown) that needs the light of wavelength directive colorimetric device from light hole 8.1 and derivation convex lens 8.2, carry out colorimetric analysis.
The light hurdle grating mobile device 9 that can regulate simultaneously light hurdle 3 and diffraction grating 7 is made of rotating shaft 9.1, pulley 9.2 and backguy 9.3.One end of rotating shaft 9.1 stretches out the monochromatic body 10 of light splitting, and can knob be installed in its end.Backguy 9.3 links to each other with rotating shaft 9.1 with light hurdle 3 by pulley 9.2 simultaneously.It then is meshing relation between rotating shaft 9.1 and the diffraction grating 7.When mobile device 9 rotates, the angle respective change of diffraction grating 7, light hurdle 3 is parallel then, make light pass through light hurdle optical filter the zone and with the reflection angle respective change of diffraction grating.Thereby the full spectrum of wavelengths of light source can be divided into the light of needed any wavelength in spectral range, thereby realize that wavelength is adjustable continuously, and precision (diffraction grating is selected 1200 lines/mm) with interior at 2nm.
The monochromatic body 10 of light splitting is a black seal, to avoid extraneous light to the interference of diffraction grating beam splitting system.The derivation convex lens 8 of the monochromatic body of light splitting is positioned at the right of monochromatic body, to adapt to elemental analyser as the easy to operate layout arrangement of user.
Claims (1)
1. the continuous adjustable light splitting device of wavelength is characterized in that by light source cambered surface reflective mirror (2), mobile light hurdle (3), reflective mirror (5), light splitting cambered surface catoptron (7), diffraction grating (7), derives the monochromatic body of convex lens (8), light hurdle grating mobile device (9) and light splitting (10) formation; Have light well (4) and light hole (8.1) on the monochromatic body of light splitting (10), light source cambered surface reflective mirror (2), mobile light hurdle (3), light well (4), reflective mirror (5) are arranged on the same optical axis; Light splitting cambered surface catoptron (6), diffraction grating (7) are installed on the same optical axis, are positioned at the monochromatic body (10) of light splitting; Light splitting cambered surface catoptron (6) also is on the same optical axis with the derivation convex lens (8.2) and the light hole (8.1) that also are positioned at the monochromatic body of light splitting (10) simultaneously; Under light hurdle grating mobile device (9) drove, mobile light hurdle (3) and diffraction grating (7) were done respectively traveling priority and rotation; Light hurdle grating mobile device (9) is comprised of the rotating shaft (9.1) of stretching out the monochromatic body of light splitting (10) and backguy (9.3) and pulley (9.2), rotating shaft (9.1) and when pulley (9.2) forms drive connection, also with diffraction grating (7) engagement and form drive connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220539908 CN202869965U (en) | 2012-10-19 | 2012-10-19 | Optical splitting device with continuously adjustable wavelength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220539908 CN202869965U (en) | 2012-10-19 | 2012-10-19 | Optical splitting device with continuously adjustable wavelength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202869965U true CN202869965U (en) | 2013-04-10 |
Family
ID=48036674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220539908 Expired - Fee Related CN202869965U (en) | 2012-10-19 | 2012-10-19 | Optical splitting device with continuously adjustable wavelength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202869965U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104422516A (en) * | 2013-09-06 | 2015-03-18 | 株式会社岛津制作所 | Wavelength calibration method for monochromator, and spectrophotometer |
-
2012
- 2012-10-19 CN CN 201220539908 patent/CN202869965U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104422516A (en) * | 2013-09-06 | 2015-03-18 | 株式会社岛津制作所 | Wavelength calibration method for monochromator, and spectrophotometer |
| CN104422516B (en) * | 2013-09-06 | 2017-04-12 | 株式会社岛津制作所 | Wavelength calibration method for monochromator, and spectrophotometer |
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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: 20130410 Termination date: 20161019 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |