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Laser encoder module that can work in wide temperature range

A laser ruler and working technology, which is applied in the field of laser ruler, can solve the problems of inaccurate temperature measurement and high manufacturing cost, and achieve the effects of saving costs, increasing the working temperature range, and improving accuracy

Active Publication Date: 2017-12-29
SINTAI OPTICAL SHENZHEN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a laser ruler that can increase the working temperature range and save costs for the defect that the temperature measurement of the laser ruler in the prior art is inaccurate when the external temperature is too high, or the manufacturing cost is high. Laser ruler module working in wide temperature range

Method used

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  • Laser encoder module that can work in wide temperature range
  • Laser encoder module that can work in wide temperature range
  • Laser encoder module that can work in wide temperature range

Examples

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Embodiment Construction

[0014] refer to figure 1 and figure 2 An embodiment of the laser ruler module that can work at a wide temperature range of the present invention includes a metal casing 2 , a laser ruler body 3 , a communication circuit board 4 , a temperature adjustment device 5 and a heat dissipation unit 6 disposed on the metal casing 2 .

[0015] The metal shell 2 includes an inner wall 21 surrounding and defining an accommodating space 22 .

[0016] The laser ruler body 3 is disposed in the accommodating space 22 and includes a transmitter 31 , a receiver 32 and a distance measuring circuit board 33 . The transmitter 31 can emit a laser beam 311 , the laser beam 311 will be reflected and transmitted back to the receiver 32 after reaching a target (not shown in the figure), and then measure the measured value through the distance measuring circuit board 33 . In this embodiment, the transmitter 31 is a laser diode (Laser Diode, LD), and the receiver 32 is an avalanche photodiode (Avalanc...

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Abstract

The invention relates to a laser ruler module capable of working at a wide temperature, which comprises a metal shell, a laser ruler body and a temperature regulating device. The metal shell includes an inner wall surrounding and defining an accommodating space. The laser ruler body is arranged in the accommodating space. The temperature adjustment device is arranged in the accommodating space, and includes a thermoelectric cooler and a heat-conducting metal sheet against the inner wall surface, and two opposite sides of the heat-conducting metal sheet are respectively against the thermoelectric cooler and the laser ruler ontology. The present invention uses the thermoelectric cooler to increase the working temperature range of the laser ruler body, and the laser ruler body and the thermoelectric cooler are common commercially available components, and no special wide-temperature components need to be used additionally. Achieve the effect of not only increasing the operating temperature range but also saving costs.

Description

technical field [0001] The invention relates to a laser ruler, in particular to a laser ruler module that can work at a wide temperature. Background technique [0002] A laser ruler is an instrument that uses a laser beam to measure distance. Its basic principle is to emit a laser beam to a target, and then receive the laser beam reflected by the target, and calculate the flight time or phase of the laser beam. difference to find the distance to the target. [0003] A known civil laser ruler includes a casing and a laser ruler body arranged in the casing. The laser ruler body will generate heat during use, and the applicable working temperature range of the laser ruler is mostly within 0 ~40°C or -10~50°C, if the laser ruler is used in the industrial field, it is necessary to install an internal heater, which can increase the applicable working temperature range to -40~50°C, however, this Such a temperature range still prevents the laser ruler from being applied in a highe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/08
Inventor 陈月叶李祎奇刘华唐罗胜
Owner SINTAI OPTICAL SHENZHEN CO LTD