CN1104326A - Testing method for vibration of optical table - Google Patents
Testing method for vibration of optical table Download PDFInfo
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- CN1104326A CN1104326A CN 93120974 CN93120974A CN1104326A CN 1104326 A CN1104326 A CN 1104326A CN 93120974 CN93120974 CN 93120974 CN 93120974 A CN93120974 A CN 93120974A CN 1104326 A CN1104326 A CN 1104326A
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Abstract
The present invention relates a detection technique for optical platform vibration. Said invention uses azo-dye MD/PVA materials to implement real-time holographic storage, uses He-Ne laser as detection light beam, uses a photo-electric detector to receive the diffraction signal of laser, and according to the curve displayed on the socilloscope to implement monitoring detection and quantively researching external vibration. Said invented method is simple and easy to implement, and can be extensively used in technological process for making photoetched offset plate and photo-sensitive offset plate.
Description
The present invention relates to a kind of detection technique for optical platform vibration.
Detection to the little vibration of optical table mainly is an extent of vibration of utilizing the michelson interferometer monitoring platform at present.Its shortcoming is to detect level of vibration in real-time quantitative ground.
The purpose of this invention is to provide a kind of i.e. monitoring and detection in real time, can study the detection method of extraneous vibration again quantitatively.
In order to achieve the above object, the present invention adopts such technical scheme:
Utilize azo dyes MD/PVA material to carry out the holographic real-time storage, survey diffracted signal, and then the research extraneous vibration is to the influence of holographic grating by the He-Ne laser real-time.Its principle as shown in Figure 1, thing light O and reference light R among the figure, P
O=P
R, D is a He-Ne laser acquisition light beam.When the incident angle of D light satisfies Bragg angle, will on the E direction, detect the formed diffracted signal of detecting light beam, this diffracted signal is accepted by photodetector, and imports oscillograph through after amplifying.If the disturbance of vibration is arranged, its diffraction efficiency will be the curve of vibration, as shown in Figure 2.Real-time diffraction efficiency when A is friction among Fig. 2 and time relation curve, B are real-time diffraction efficiency and the time relation curves when vibration is arranged.
The inventive method is simple, and any laboratory of being engaged in laser hologram work all possesses this condition, and this method material requested can be reused simultaneously.
Below in conjunction with embodiment and Fig. 3 the present invention is described in further detail.
Fig. 3 is the synoptic diagram of embodiment, and 1 is Ar among the figure
+Laser instrument, the 2nd, beam splitter, 3 and 4 is catoptrons, the 5th, sample, the 6th, photodetector, the 7th, amplifier, the 8th, oscillograph, the 9th, the He-He laser acquisition light beam of incident, the 10th, the He-Ne laser signal of diffraction.
The preparation of sample 5 in the present embodiment:
Azo dyes methyl orange is water-soluble, and concentration is 6 * 10
-3M, polyvinyl alcohol (PVA) (PVA) is dissolved in 80 ℃ hot water, and concentration is 15wt/%, mixes with dye solution then, gets on the wave carrier piece that the 1mL mixed liquor is poured on cleaning, and placed 12 hours at dry place, and making its thickness is the optical holography original paper of 40 μ m.
Experimental procedure:
Ar
+The 514.5nm light beam of laser instrument 1 by beam splitter 2 be divided into thing light O and reference light R through catoptron 3,4 to sample 5, P
O=P
R=2mW, angle 0 °＜2 θ＜150 °, He-Ne632.8nm is a detecting light beam 9, P ≈ 1mW.According to the angle of thing light and reference light, determine that the Bragg angle of detection light is ψ, its diffracted signal 10 is accepted by photodetector 6, amplifies through amplifier 7 signals, can see the change curve of diffraction efficiency with extent of vibration at oscillograph 8.
Claims (1)
1, a kind of method of detection optical platform vibration is characterized in that utilizing azo dyes MD/PVA material to carry out the holographic real-time storage, survey diffracted signal by the He-Ne laser real-time, and then the research extraneous vibration is to the influence of holographic grating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93120974 CN1104326A (en) | 1993-12-21 | 1993-12-21 | Testing method for vibration of optical table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93120974 CN1104326A (en) | 1993-12-21 | 1993-12-21 | Testing method for vibration of optical table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1104326A true CN1104326A (en) | 1995-06-28 |
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ID=4993501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93120974 Pending CN1104326A (en) | 1993-12-21 | 1993-12-21 | Testing method for vibration of optical table |
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| CN (1) | CN1104326A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1924536B (en) * | 2005-09-02 | 2010-04-28 | 鸿富锦精密工业（深圳）有限公司 | Vibration measurement and monitoring system |
| CN102526968A (en) * | 2012-01-20 | 2012-07-04 | 哈尔滨商业大学 | Monitorable photoelectric vibration response strength training device |
| CN102607693A (en) * | 2012-03-27 | 2012-07-25 | 西安航空技术高等专科学校 | Acousto-optic modulation detection device and detection method for vibration performance of optical table |
| CN112816055A (en) * | 2020-12-31 | 2021-05-18 | 北方工业大学 | Self-calibration optical micro-vibration detection method |
| CN112842309A (en) * | 2021-01-07 | 2021-05-28 | 大连理工大学 | High spatial resolution heart vibration detection method based on light reflection identification |
-
1993
- 1993-12-21 CN CN 93120974 patent/CN1104326A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1924536B (en) * | 2005-09-02 | 2010-04-28 | 鸿富锦精密工业（深圳）有限公司 | Vibration measurement and monitoring system |
| CN102526968A (en) * | 2012-01-20 | 2012-07-04 | 哈尔滨商业大学 | Monitorable photoelectric vibration response strength training device |
| CN102526968B (en) * | 2012-01-20 | 2013-11-27 | 哈尔滨商业大学 | Monitorable photoelectric vibration response strength training device |
| CN102607693A (en) * | 2012-03-27 | 2012-07-25 | 西安航空技术高等专科学校 | Acousto-optic modulation detection device and detection method for vibration performance of optical table |
| CN112816055A (en) * | 2020-12-31 | 2021-05-18 | 北方工业大学 | Self-calibration optical micro-vibration detection method |
| CN112816055B (en) * | 2020-12-31 | 2021-09-03 | 北方工业大学 | Self-calibration optical micro-vibration detection method |
| CN112842309A (en) * | 2021-01-07 | 2021-05-28 | 大连理工大学 | High spatial resolution heart vibration detection method based on light reflection identification |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |