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1. The optical paths are evacuated and the suspension systems are insulated against mechanical vibration by shock absorbers.

2. The way to turn the optical path of a small stereomicroscope (XTX) and the technology to duplicate the angle-mirror are briefly related.

3. With the compensator in place any optical path difference arises from the actual path difference.

4. Optical depth and optical path are often confused in the literature.

5. The design of common optical path structure improves the resistance to environment vibrations and temperature turbulence.

6. The stability of micro - birefringence optical path difference measuring system based on electro - optic modulation method is studied.

7. As with all interferometric methods, optical path length changes of the light waves are observed through interferometric fringe pattern analysis.

8. In optical path spectrometer, the instability of light source always affects the stability of color measurement.

9. We can get current optical path difference or pulse delay from the spectrum graph directly.

10. We adopt mix optical path and unidirectional sliding table, which minimize the impact of optical path length on laser power,(sentencedict .com) enhance movement stability and reliability during cutting.

11. The effect of the incident angle on the optical path difference, state of polarization and interference fringes of the system is deduced in detail.

12. They mean the existence of the additional optical path difference when two beams of laser transit along two opposite directions in the photorefractive crystal.

13. In order to avoid immense loss for optical cable break, a quick fault detection and optical path automatic switching system is designed and realized.

14. In the new method, the spectrum measured value was firstly normalized to eliminate the intensity modulation, and an initial value of Optical Path Difference (OPD) was calculated by extremum method.

15. An optical pickup generates spherical aberration in a laser light emitted from a semiconductor laser becoming a light source by moving, in the direction of the optical path, a collimate lens.

16. With the method of differential optical absorption spectroscopy (DOAS), aerosol along the light path is monitored and its size distribution is measured with double optical path method.

17. Three conditions are considered together and conclude the selective principle of fixed optical path difference.

18. And adopting a method of eight light beam exposure at the same time forms four focus hololens so that diffraction efficiency is increased. Real optical path system and experimental results are given.

19. Theorem of plane stress-optical was used to calculate the optical path difference of each point.

20. In this experiment, the known delay, which is used as time criteria for calibration of instrument, was generated by the relative optical path difference of Michelson interference light path.

21. The resolution of the laser interferometer is improved by using optical path difference doubling technique.

22. In experiment, excess fraction method was introduced into the measurement of the optical path difference.

23. An adaptive phase shifting interferometry, which is insensitive to the uniform optical path difference induced by environment vibration and air turbulence, is studied.

24. It can give the direction of the wave normal and thus is convenient to calculate the optical path in crystals.

25. With the method, the rays' lateral displacements, distance between two output rays and optical path difference can be computed precisely for a certain wedge type fiber optical isolator.

26. Spectral resolution of optical fiber Fourier transform spectrometer depends on maximum optical path difference(OPD).

27. The sensing signal is detected by means of compensating the optical path difference of the two orthogonal polarization modes by two arms path difference of Michelson interferometer.

28. Electrochemical reduction process of microperoxidase-11 was investigated by in-situ UV-Vis and CD spectroelectrochemistry methods with a long optical path thin layer cell.

29. The calculation shows that an oxygen-iodine amplifier using multiple optical path may get high amplification ratio and high chemical efficiency.

30. By the aid ofpeak detector circuit, the intensity of measuring signal and the propriety of the optical path adjustment can be known.