CN2556615Y - Laser diode wave length detector - Google Patents
Laser diode wave length detector Download PDFInfo
- Publication number
- CN2556615Y CN2556615Y CN 02263358 CN02263358U CN2556615Y CN 2556615 Y CN2556615 Y CN 2556615Y CN 02263358 CN02263358 CN 02263358 CN 02263358 U CN02263358 U CN 02263358U CN 2556615 Y CN2556615 Y CN 2556615Y
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- CN
- China
- Prior art keywords
- laser diode
- grating
- socket
- slit
- light path
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Abstract
The utility model discloses a wavelength survey meter of a laser diode, which comprises a spectrograph (3), a light path of which is provided with a slit (33), a grating (32) and a photocoupler (31) in sequence, more particularly, the spectrograph (3) and a laser diode socket (5) are fixedly connected on a locating platform (1). The slit (33) of the spectrograph (3) is vertically inserted into an emission light path of the laser diode (4) on the laser diode socket (5). The grating (32) is a concave grating, a focus point of which is arranged on the slit (33) and a local plane of which is arranged on the photocoupler (31). The spectrograph (3) is provided with a grating adjuster (2) connected with the grating (32). The laser diode socket (5) is fixed on a socket adjuster (6) between the laser diode socket (5) and the locating platform (1). The utility model not only satisfies the requirement of detection, but also has concise formation and convenient use, thereby being pointed to be used in the detection of the laser diode which is a light emitting device of a DVD.
Description
Technical field
The utility model relates to a kind of spectral measurement instrument, especially laser diode wavelength detector.
Background technology
At present, people often use various spectrometers for light emitting devices one laser diode to Digital video disc (DVD) detects, as commercially available BP300 grating spectrograph.It by be positioned on the same light path, place the multi-disc catoptron and the optical grating constitution of entrance slit, photoelectrical coupler (CCD) and housing on the housing respectively, grating wherein is connected with step motor shaft.During detection, laser diode to be measured need be placed appropriate location, and adjust the corner of grating, with the spectrum line of the light source to be measured after obtaining the process grating dispersion on the CCD by starting stepper motor apart from entrance slit.But this spectrometer exists weak point, at first, and because of it is universal, multiduty, so complex structure, cost height is more numerous and diverse during use; Secondly, need during measurement the distance of laser diode to be measured and entrance slit is carried out repeatedly adjustment, with avoided far away or cross near and the light that produces too a little less than or the too strong CCD non-output signal that is caused or saturated; Once more, unnecessary function and purposes have also caused leaving unused of resource and waste.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of laser diode wavelength detector for overcoming weak point of the prior art.
The technical scheme that is adopted comprises the spectrometer that is provided with slit, grating and photoelectrical coupler on its light path successively, particularly be connected with spectrometer and laser diode socket on the locating platform, the slit collimation of said spectrometer is in the emission light path that is inserted in the laser diode on the laser diode socket, said grating is a concave grating, and its focus is positioned on the slit, the focal plane is positioned on the photoelectrical coupler.
As the further improvement of technical scheme, described spectrometer is provided with the grating adjustor that is connected with grating; Described grating adjustor is paid for the screw nut transmission, and it regulates direction is emission light path parallel with laser diode; Described laser diode socket is fixed on the socket regulator between itself and locating platform; Described socket regulator is paid for the screw nut transmission, and it regulates direction is vertical with the emission light path of laser diode.
Beneficial effect with respect to prior art is, one, only just can carry out effective chromatic dispersion in the spectrometer to the light that the measured laser diode is launched with a concave grating, and then the corresponding spectrum line output of acquisition on CCD, both satisfied the requirement that detects, construct succinct, easy to use, also inexpensive again; Its two, laser diode socket and spectrometer are fixedly connected on the locating platform, and laser diode to be measured and the distance between spectrograph slit are fixed, and have exempted loaded down with trivial details roll adjustment process, make testing simple and easy to do; They are three years old, the employing of grating adjustor makes the spectrum line of required chromatic dispersion wave band drop on the CCD employing of socket regulator more exactly, make the position of socket can move left and right, be convenient to accurately the emission light path of testing laser diode is collimated mutually with the light path of accepting of spectrometer; Its four, with strong points, do not have superfluous thing, resource is fully utilized.
Description of drawings
Below in conjunction with accompanying drawing optimal way 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.
Embodiment
Referring to Fig. 1, be respectively equipped with slit 33, grating adjustor 2 and photoelectrical coupler 31 on the housing of spectrometer 3, housing is built-in with concave grating 32; Wherein, the focus of grating 32 is positioned on the slit 33, the focal plane is positioned on the photoelectrical coupler 31; Grating adjustor 2 is paid by the screw nut transmission and is constituted, and it regulates the emission light path parallel of direction and laser diode 4; Grating 32 is fixedly connected with the nut that grating adjustor 2 screw nut transmissions are paid.Socket regulator 6 is paid by the screw nut transmission and is constituted, and it is vertical with the emission light path of laser diode 4 that it regulates direction, and the laser diode socket 5 that is inserted with laser diode to be detected 4 is fixed on the nut that the 6 screw nut transmissions of socket regulator pay.Above-mentioned spectrometer 3 and socket regulator 6 are fixed on the locating platform 1, and wherein, the slit 33 of spectrometer 3 collimates mutually with the emission light path of laser diode 4.
During use, the laser that laser diode 4 to be detected sends shines on the grating 32 by slit 33, and formed spectrum line reflexes on the photoelectrical coupler 31 after grating 32 is with its chromatic dispersion, it is transformed into electric signal for subsequent treatment by photoelectrical coupler 31 again.
Claims (5)
1, a kind of laser diode wavelength detector, comprise the spectrometer (3) that is provided with slit (33), grating (32) and photoelectrical coupler (31) on its light path successively, it is characterized in that: be connected with spectrometer (3) and laser diode socket (5) on the locating platform (1), the slit (33) of said spectrometer (3) collimates in the emission light path that is inserted in the laser diode (4) on the laser diode socket (5), said grating (32) is a concave grating, and its focus is positioned on the slit (33), the focal plane is positioned on the photoelectrical coupler (31).
2, detector according to claim 1 is characterized in that spectrometer (3) is provided with the grating adjustor (2) that is connected with grating (32).
3, detector according to claim 2 is characterized in that grating adjustor (2) pays for the screw nut transmission, and it regulates direction is emission light path parallel with laser diode (4).
4, detector according to claim 1 is characterized in that laser diode socket (5) is fixed on the socket regulator (6) between itself and locating platform (1).
5, detector according to claim 4 is characterized in that socket regulator (6) pays for the screw nut transmission, and it regulates direction is vertical with the emission light path of laser diode (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02263358 CN2556615Y (en) | 2002-07-24 | 2002-07-24 | Laser diode wave length detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02263358 CN2556615Y (en) | 2002-07-24 | 2002-07-24 | Laser diode wave length detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2556615Y true CN2556615Y (en) | 2003-06-18 |
Family
ID=33729765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02263358 Expired - Fee Related CN2556615Y (en) | 2002-07-24 | 2002-07-24 | Laser diode wave length detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2556615Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458016A (en) * | 2014-11-04 | 2015-03-25 | 苏州精创光学仪器有限公司 | Fixed wavelength measuring device for continuous light source |
| CN110657951A (en) * | 2019-10-07 | 2020-01-07 | 深圳妙格投资控股集团有限公司 | Laser diode focal length and spectrum testing device |
-
2002
- 2002-07-24 CN CN 02263358 patent/CN2556615Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458016A (en) * | 2014-11-04 | 2015-03-25 | 苏州精创光学仪器有限公司 | Fixed wavelength measuring device for continuous light source |
| CN110657951A (en) * | 2019-10-07 | 2020-01-07 | 深圳妙格投资控股集团有限公司 | Laser diode focal length and spectrum testing device |
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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 |