Green Laser Level
The difference between blue light and green light of laser level meter:
1. The frequency is different. The frequency of green light is low, and the frequency of blue light is high.
2. The energy is different. The energy of green light is small, and the energy of blue light is large.
3. The display effect is different. During the day, the green laser pointer will be more noticeable than the blue light. The blue light is more obvious at night.
Relevant requirements and regulations of laser level:
1. The laser level uses a laser beam instead of manual reading. There are two types: a special laser level and a laser device attached to the level. It can be used with a level ruler equipped with a photoelectric receiving target to perform leveling. Compared with optical level, laser level has the characteristics of high accuracy, long line of sight and automatic reading and recording.
2. Using the monochromaticity and coherence of the laser, a glass or metal sheet with a certain shading pattern can be assembled in front of the telescope objective lens, that is, a zone plate, to cause diffraction interference. After focusing by the telescope, a bright and fine cross-shaped or circular laser spot is obtained within the focusing range of the zone plate, so as to collimate the target more accurately.
3. The digital level is the most advanced level at present. With a special bar code level ruler, the digital imaging system built in the instrument can automatically obtain the bar code reading of the level ruler, eliminating the need for manual reading. This instrument can greatly reduce the labor intensity of surveying and mapping operations, avoid man-made subjective reading errors, and improve measurement accuracy and efficiency.
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