What is a laser aligner?
The laser aligner is an instrument that uses a laser beam to measure very weak tomographic movement. By measuring the change in the time required for the laser beam to reach the reflector and reflect back, geologists can accurately calculate the change in the distance between the generator and the reflector. The core of the alignment laser is a laser diode. Laser diodes are a special type of light-emitting diodes whose origins can be traced back to the 1960s. The Russian physicist Alfchoro and German-American Herbert Cromer acquired it in 2000 for their most important concept. Nobel Prize in Physics. Today, laser diodes with bright rays are used as laser pointers all over the world, most importantly millions of times. But you can also find them hidden in every CD, DVD or Blu-ray player to scan for information.
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In essence, the alignment laser used for precise collimation of telescopes in our astronomy hobby is just a special Laser pointer. There are also button batteries for power supplies, resistors for current limiting (or better control electronics), actual light-emitting diodes, and small lenses for focusing a rather diffuse beam. The laser aligner measures the tolerances and errors of mechanical devices with high precision. The laser aligner probe is mounted on a traveling bracket, and a laser is used to align the detector at the same time to determine a straight light path. The carriage moves along the sliding rail, and the laser aligner measures the position and angle of the beam perpendicular to the direction of movement on the two axes. Any changes in position and angle readings are defects, distortions or deformations in the sliding rail or bearing, or both.
2021-09-28 09:41:58
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