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Infrared Thermometer

An infrared thermometer and focusing lens technology, applied in the field of infrared thermometers, can solve problems such as measurement errors

Active Publication Date: 2017-09-29
WUHAN DIKAI OPTOELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Another purpose of the present invention is to solve technical problems such as measurement errors caused by artificially adjusting the focal length of the objective lens in the prior art; to provide an infrared thermometer whose measurement accuracy is not affected by the adjustment of the focal length of the objective lens within the designed measurement distance

Method used

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Experimental program
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Embodiment

[0027] Such as figure 1 The optical components of the infrared thermometer shown include: protective glass 1, focusing lens 2, aperture stop 3, stray light stop 4, half mirror 5, field stop 6, photoelectric Converter 7; Position mirror 8, field mirror 9 and eyepiece 10 that are placed horizontally successively above half mirror 5; Signal processing module 11; Wherein: focus lens 2 can make level with respect to half mirror 5 reciprocating movement; the signal processing module 11 is electrically connected with the photoelectric converter 7 .

[0028] In the present invention, the protective glass 1 is mainly used for sealing protection, preventing the optical glass in the system from being affected by the environment and reducing the detection accuracy.

[0029] Focusing lens 2 is mainly used to concentrate the energy emitted by the emission source. Since the aperture of the objective lens is much larger than the photosensitive surface of the detector, the received energy is ...

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Abstract

The invention relates to an infrared thermometer, in particular to an infrared thermometer whose measurement accuracy is not affected by the size of a measurement target and the measurement distance. Including: focusing lens, half mirror, photoelectric converter, reflector, field lens, eyepiece and signal processing module for calculating temperature according to the output signal of photoelectric converter, including: focusing lens, half mirror and photoelectric converter Placed horizontally in sequence, and the focusing lens can reciprocate horizontally relative to the half-mirror; the reflector is located above the half-mirror, and the reflector, field lens and eyepiece are placed horizontally in sequence; between the focusing lens and the photoelectric converter There is an aperture assembly for filtering the light source between them. Therefore, the present invention has the following advantages: 1. Within the designed measurement distance, the measurement accuracy is not affected by the size of the measurement target and the measurement distance; 2. Within the designed measurement distance, the measurement accuracy is not affected by the adjustment of the focal length of the objective lens.

Description

technical field [0001] The invention relates to an infrared thermometer, in particular to an infrared thermometer whose measurement accuracy is not affected by the size of a measurement target and the measurement distance. Background technique [0002] The optimal measuring distance of the existing infrared thermometer is a fixed parameter, and its measuring accuracy is related to the size of the measured object and the distance of the measured object. When using it, the "distance coefficient" parameter must be followed, that is, as the installation distance becomes larger, the measurement target must also become larger in a certain proportion. However, in actual use, due to the limitation of field conditions, it is difficult to meet the above conditions, which will affect the measurement accuracy. [0003] In addition, when the existing infrared thermometer is used, it is usually necessary to adjust the focal length of the objective lens, which has high professional requir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/08G01J5/10
Inventor 王保奎
Owner WUHAN DIKAI OPTOELECTRONICS TECH