Effect of laser beam incident Angle on laser cutting quality.

激光切割中入射角对切割质量的影响。

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The design of common path makes the measurement beam and the reference beam incident on the surface along the same way.

共光路设计， 使测量光和参考光沿同一路径入射到被测表面上。

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On the basis of theories of physics, geometrical optics and photometry, the optical properties of collimated light beam incident upon single fiber perpendicular to the fiber axis are studied.

结合物理学的基本原理和几何光学的基本规律以及光度学的基础理论等三方面，研究了单纤维在平行均匀光束垂轴入射时的光学性质。

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Later that evening the police helicopter also had a laser beam shone on it, when it was sent to investigate the earlier incident.

BBC: Youth sentenced over passenger plane laser pen incident

Initial investigations from structural engineer Arup revealed that one of the two bolts holding the beam that swung loose was missing, while the other was fractured during the incident 10 days ago.

BBC: The Holyrood beam problem is still being investigated

In the incident which led to the teenager's conviction, a green beam was shone at the aircraft which was about 2, 000ft (610m) over a populated area of Torquay while it was searching for a missing person.

BBC: Laser warning after teenager guilty of 'dazzling' pilot