CN2047010U - Dk type laser dynamometer - Google Patents
Dk type laser dynamometer Download PDFInfo
- Publication number
- CN2047010U CN2047010U CN 89202869 CN89202869U CN2047010U CN 2047010 U CN2047010 U CN 2047010U CN 89202869 CN89202869 CN 89202869 CN 89202869 U CN89202869 U CN 89202869U CN 2047010 U CN2047010 U CN 2047010U
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- detector
- rotating disk
- laser
- blade
- power
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model belongs to the field of the measuring instruments of laser parameters, in particular to measure the output power of lasers. The instrument makes use of a chopping principle to change an ordinary static laser detector into a dynamical detector, and can defect power at any time and monitor the fluctuation of the power of ms grade in uninterrupted work. The DK laser dynamometer can measure continuous laser power from milliwatt to myriawatt, and can directly read out measured number values from a display system. The utility model has the advantages of convenient operation, high precision.
Description
The utility model belongs to the instrument field of laser parameter measurement.
The laser powermeter kind is more at present, mainly be the laser powermeter of power that is used for Laser Measurement from microwatt to watt level, but, a kind of convenient and practical ideal product is not arranged also for the laser powermeter of energy measurement above 100W.To measure so hundreds of watts or kilowatt, the laser of myriawatt level is just more difficult and bothered.In order to measure the performance number of high power laser, human laser feedwater heating is arranged, the heat that utilizes water to absorb converses laser power, these indirect measuring methods are not only measured very inconvenient, and multifactorly bring sizable error to measurement because of all, the transient state that this in addition indirect method also can't the Laser Measurement output power rises and falls.
Utilize general copped wave method Laser Measurement power in addition, it is the fan-shaped slit window of on a rotating disk, doing a certain size, detector is placed on the back of rotating disk, when rotating disk rotates, detector records the laser energy by the slit window, and then is converted into power.Utilize this method to measure, at first to take safeguard procedures to the reflected light and the scattered light of rotating disk, in addition for a high-power laser beam, except considering safeguard procedures to reflected light and scattered light, because overwhelming majority time laser beam are directly by being radiated on the copped wave rotating disk, the heating that therefore also must consider rotating disk is so that the problem of fusing.
List of references: 1, China Patent No.: 86207853.
2, electrical apparatus factory's power meter product description sets a prairie fire in Shanghai.
In order to overcome the shortcoming of above-mentioned laser powermeter, the purpose of this utility model is: provide a kind of transient state that can measure laser output power to rise and fall, can directly measure again from milliwatt to kilowatt so that myriawatt is exported the laser powermeter of the wide spectral response of wide range of laser power continuously.
DK type laser powermeter provided by the invention as shown in Figure 1, it is that general static laser detector is become dynamic detector.It is made up of detector, transmission system, display part.Detector is a calorimetric, and it can be made up of minisize thermoelectric even summation graphite absorber, can be that pyroelectricity material and graphite absorber are formed.According to the requirement of different laser powermeters, can use the detector of different materials, the blade that detector is made different angles and different length meets the demands.The hop of power meter comprises rotating disk (2), motor (4), metal spring sheet (3) feed-through collar compositions such as (5).Display part (6) can adopt pointer demonstration, photoelectricity galvanometer to show or digital processing unit.
Detector blade of the present utility model (1) is fixed on the rotating disk (2), rotating disk (2) be contained in an adjustable speed motor (4) the axle on.When motor during, have only blade (1) directly inswept on the laser beam with the rotation of certain speed.Rotating disk (2) is the not irradiation of Stimulated Light fully then, has so just overcome general copped wave method owing to the caused reflection of the direct inswept laser beam of rotating disk, insoluble problems such as scattering and absorption heating.The signal of detector blade (1) is connected on two feed-through collars (5) on the rotating disk (2), when the inswept detector blade of laser beam (1), the signal that is received is spread out of from the feed-through collar (5) on the rotating disk (2) by metal spring sheet (3), and be input to signal display system (6), then available pointer is read, after also available light electric-examination flowmeter shows or is converted into performance number by digital processing system, directly show with charactron.
The principle of copped wave method Laser Measurement power is:
Wherein W is by being surveyed continuous laser power, and t is that the time that receives body (1) is arrived in laser radiation.E is the energy that t received in the time interval, so receiving unit blade (1) must be made sector.Fan arc limit is not had specific (special) requirements, can be arc also can be straight flange all can, but angle must be accurate.For the performance number good reproducibility that guarantees to record, certain center of circle of blade (1) that guarantees overlaps with axle center of motor when assembling.In order to increase measurement range, the angle of blade (1) heals the little power range of surveying more greatly, and the length of blade is longer, and the range of application of measurement difformity light beam more extensively.Embodiment 1
Receiving body blade (1), to do angled by the pyroelectricity material of PVDF film and graphite absorber be 3.6 degree, long 6 centimetres detector blade (1).Make rotating disk (2) with the thick printed circuit board (PCB) of 2mm, and on rotating disk (2), erode away two feed-through collars (5), two signal wires of detector are connected on two feed-through collars (5) by the copper sheet of manufacturing on the rotating disk printed circuit board (PCB), make the wide signal line leads reed (3) of 5mm that is with the thick phosphorus copper plate of 0.25 mm, by signal lead reed (3) signal is inserted data handling system (6), demonstrate institute's power scale value by charactron at last.Motor (4) uses sound-track engraving apparatus adjustable speed micromachine.Embodiment 2
Manufacture by embodiment 1, wherein head on the structure replacement lead-in wire reed (3) of ball with the metal tube built-in spring of an opening.Embodiment 3
Manufacture by embodiment 1, wherein the bearing with ring-type or layer structure replaces lead-in wire reed (3).Embodiment 4
Manufacture by embodiment 1, wherein rotating disk (2) directly is not contained on motor (4) axle, rotate but utilize gear or belt gear to drive rotating disk (2).
The laser power meter that the utility model provides is manufactured simply, can directly measure from milliwatt to a kilowatt continuous wave output laser power, measurement power range is big, spectral response is wide, and can at any time record Laser output power in the transient state fluctuating of ms inter-stage, be a kind of comparatively desirable laser parameter measurement instrument. This instrument has widely practical value, is easy to promote produce.
Claims (6)
1, a kind of laser powermeter that comprises that detector, kinematic train display device are formed, it is characterized in that: detector is made sector (1), blade (1) is fixed on the rotating disk (2), rotating disk (2) is installed on the axle of governor motor (4), rotating disk (2) is gone up leaded ring (5), it is connected with detector blade (1), feed-through collar (5) links to each other with metal spring sheet (3) again, and the lead-in wire of metal spring sheet (3) and display system (6) are joined.
2, by the described laser powermeter of claim 1, it is characterized in that: detector is a calorimetric.
3, by the described laser powermeter of claim 2, it is characterized in that: the calorimetric detector is made up of micro thermocouple and graphite absorber or is made up of pyroelectricity material and graphite absorber.
4, by the described laser powermeter of claim 1, it is characterized in that: the limit of detector blade (1) can be arc or square limit, and blade (1) length and angle can be got different value by measurement range.
5, by the described laser powermeter of claim 1, it is characterized in that: power meter transmission adopted governor motor (4) drives rotating disk (2) or adopts gear or belt gear drive rotating disk (2).
6, according to the described laser powermeter of claim 1, it is characterized in that: lead-in wire reed (3) can be the spring ball structure, can be the bearing of ring-type or layer structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89202869 CN2047010U (en) | 1989-03-20 | 1989-03-20 | Dk type laser dynamometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89202869 CN2047010U (en) | 1989-03-20 | 1989-03-20 | Dk type laser dynamometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2047010U true CN2047010U (en) | 1989-11-01 |
Family
ID=4860534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89202869 Withdrawn CN2047010U (en) | 1989-03-20 | 1989-03-20 | Dk type laser dynamometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2047010U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465594C (en) * | 2006-03-23 | 2009-03-04 | 上海理工大学 | Electronic calibrating thermal electron-releasing radiometer with ultraviolet reinforcing |
| CN103398785A (en) * | 2013-07-26 | 2013-11-20 | 西北核技术研究所 | Rotary absorber-based high-energy laser energy measuring device |
| CN107643127A (en) * | 2017-09-15 | 2018-01-30 | 电子科技大学 | A kind of portable heavy caliber real time laser energy gauge and method |
-
1989
- 1989-03-20 CN CN 89202869 patent/CN2047010U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465594C (en) * | 2006-03-23 | 2009-03-04 | 上海理工大学 | Electronic calibrating thermal electron-releasing radiometer with ultraviolet reinforcing |
| CN103398785A (en) * | 2013-07-26 | 2013-11-20 | 西北核技术研究所 | Rotary absorber-based high-energy laser energy measuring device |
| CN103398785B (en) * | 2013-07-26 | 2015-10-28 | 西北核技术研究所 | Based on the energy measurement of high energy laser measurement mechanism of rotary absorber |
| CN107643127A (en) * | 2017-09-15 | 2018-01-30 | 电子科技大学 | A kind of portable heavy caliber real time laser energy gauge and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |