Temperature measuring device and correction device

Abstract

The utility model discloses a temperature measuring device and a correcting device, and relates to the technical field of temperature measurement. The temperature measuring device comprises a light collection assembly used for collecting detection light of a to-be-measured object and converging the detection light; the light splitting assembly is located on a transmission light path of the light collection assembly and used for receiving the detection light and splitting the detection light into a first sub-light beam and a second sub-light beam; the temperature measuring assembly is used for receiving the first sub-light beam and determining the temperature of the to-be-measured object according to the first sub-light beam; the auxiliary assembly is used for receiving the second sub-light beam and imaging according to the second sub-light beam; and / or the auxiliary assembly is used for outputting the indication laser, so that the indication laser is emitted to the surface of the to-be-measured object through the light splitting assembly and the light collection assembly. The temperature measuring device provided by the utility model can improve the measurement accuracy of temperature measurement.

Description

Technical Field

[0001] The present application relates to the technical field of temperature measurement, and in particular to a temperature measuring device and a correction device. Background Art

[0002] Temperature detection is the lifeblood of modern industry. The methods of measuring temperature can be divided into contact and non-contact temperature measurement.

[0003] At present, contact thermometers have the disadvantages of slow response speed and long temperature measurement time. The non-contact temperature measurement method of related technology is easily affected by factors such as distance and environment, resulting in low measurement accuracy. Utility Model Content

[0004] The main purpose of this application is to propose a temperature measuring device and a correction device, aiming to improve the measurement accuracy of a non-contact temperature measurement method.

[0005] To achieve the above objectives, in a first aspect, the present application proposes a temperature measuring device, comprising:

[0006] A light collecting component, used to collect detection light of the object to be measured and converge the detection light;

[0007] A light splitting component, located on the transmission light path of the light collecting component, for receiving the detection light and dividing the detection light into a first sub-beam transmitted along a first direction and a second sub-beam transmitted along a second direction, wherein the first direction and the second direction intersect;

[0008] a temperature measuring component, located on the transmission optical path of the light splitting component along the first direction, and used for receiving the first sub-beam and determining the temperature of the object to be measured according to the first sub-beam;

[0009] An auxiliary component is located on the transmission light path of the spectroscopic component along the second direction, and is used to receive the second sub-beam and form an image based on the second sub-beam; and / or, the auxiliary component is used to output an indication laser so as to emit the indication laser onto the surface of the object to be measured via the spectroscopic component and the light collection component.

[0010] The temperature measuring device comprises: a light collecting component, a spectroscopic component, a temperature measuring component and an auxiliary component. The light collecting component collects the detection light of the object to be measured and converges the detection light to the spectroscopic component. The spectroscopic component divides the detection light into a first sub-beam and a second sub-beam. The temperature measuring component receives the first sub-beam and determines the temperature of the object to be measured according to the first sub-beam, thereby realizing the temperature measurement of the object to be measured. In the case where the auxiliary component images the object to be measured according to the second sub-beam, the imaging of the object to be measured can assist the light collecting component to align with the object to be measured, and can also perform position correction on the temperature measuring device based on the image, thereby improving the accuracy of temperature measurement; similarly, in the case where the auxiliary component outputs the indicating laser, the indicating laser can be emitted on the surface of the object to be measured through the spectroscopic component and the light collecting component, so that the position correction of the temperature measuring device can be performed based on the indicating laser, thereby improving the accuracy of temperature measurement. In addition, by setting the light collecting component as a high temperature resistant device, setting the light collecting component in a high temperature environment, and setting the other components of the temperature measuring device in a normal environment, the temperature measurement of the object to be measured in a high temperature environment can be realized, without making the temperature measuring device as a whole resistant to high temperature, thereby increasing the applicable environment of the temperature measuring device.

[0011] In one embodiment, the light splitting component includes: a first transmission optical fiber and a semi-transparent and semi-reflective element;

[0012] The first transmission optical fiber is located on the output optical path of the light collection component, and is used to receive the detection light and transmit the detection light to the semi-transmissive and semi-reflective element;

[0013] The semi-transmissive and semi-reflective element is used to split the detection light into the first sub-beam and the second sub-beam, wherein the first sub-beam is transmitted light and the second sub-beam is reflected light.

[0014] In one embodiment, the first sub-beam is in the infrared light band; the temperature measurement component includes: a first focusing lens, a first aperture, a filter and a photodetector;

[0015] The first focusing lens is used to converge the first sub-beam to a first area;

[0016] The first aperture is located in the transmission light path of the first focusing lens;

[0017] The filter is located in the output light path of the first aperture, and is used for filtering the first sub-beam passing through the first aperture;

[0018] The photoelectric detector is located in the first area, and is used to receive the first sub-beam after filtering by the filter, and determine the temperature of the object to be measured according to the received first sub-beam.

[0019] In one embodiment, the temperature measurement component includes: a first focusing lens, and the second sub-beam is located in the visible light band; the auxiliary component includes: a second focusing lens, a second aperture and a visible light detector;

[0020] The second focusing lens is used to converge the second sub-beam to a second area;

[0021] The second aperture is located in the transmission light path of the first focusing lens;

[0022] The visible light detector is located in the second area, and is used for receiving the second sub-beam passing through the second aperture, and forming an image according to the received second sub-beam.

[0023] In one embodiment, the auxiliary component includes: a first laser emitter, which is used to output the indication laser so as to emit the indication laser onto the surface of the object to be measured via the light splitting component and the light collecting component.

[0024] In one embodiment, the auxiliary component further includes: a first laser receiver, the first laser receiver is used to receive reflected light reflected from the surface of the object to be measured, and determine the distance between the object to be measured and the temperature measuring device according to the received reflected light.

[0025] In a second aspect, the present application further provides a calibration device, which is applied to the temperature measuring device as described in the first aspect; the calibration device comprises:

[0026] A light source assembly, used for outputting a reference light and a correction light separated from the same reference light, wherein the reference light and the correction light have the same light energy intensity and different polarization states;

[0027] A receiving component, used for receiving the reference light and recording the energy of the reference light;

[0028] A transmission component, wherein the output portion of the transmission component is located on the transmission light path between the light collection component and the spectroscopic component, and the transmission component is used to receive the correction light, transmit the correction light to the light collection component after polarization state conversion, and receive the reflected correction light output by the light collection component, and transmit the reflected correction light to the spectroscopic component as the detection light.

[0029] The above-mentioned correction device is applied to the temperature measuring device as described in the first aspect, and includes a light source component, a receiving component and a transmission component. The light source component outputs reference light and correction light separated from the same reference light. Since the reference light and the correction light have the same light energy intensity but different polarization states, the reference light can be used as a reference for subsequent correction of the correction light. By receiving the reference light through the receiving component and recording the energy of the reference light, the energy parameters of the reference light can be determined so as to be used as a reference for subsequent correction. The output part of the transmission component is located on the transmission light path between the light collection component and the spectroscopic component. After receiving the correction light, the transmission component transmits the correction light to the light collection component after polarizing it, and transmits the correction light to the object to be measured through the light collection component, and receives the reflected correction light output by the light collection component, and transmits the reflected correction light as detection light to the spectroscopic component, so that the spectroscopic component can separate the detection light into a first sub-beam and a second sub-beam. The temperature measurement component receives the first sub-beam and determines the temperature of the object to be measured according to the first sub-beam. On this basis, the temperature measuring component can be calibrated based on the recorded parameters of the reference light and the measured parameters of the temperature measuring component to ensure the measurement accuracy of the temperature measuring component and avoid the problem of large temperature measurement deviation after long-term use of the temperature measuring component.

[0030] In one embodiment, the light source assembly includes: a second laser emitter, a third focusing lens, and a first polarization beam splitting element;

[0031] The second laser emitter is used to emit laser;

[0032] The third focusing lens is located on the transmission light path of the second laser emitter, and is used to receive the laser emitted by the second laser emitter and output reference light;

[0033] The first polarization beam splitting element is located on the transmission light path of the reference light, and is used to split the reference light into the reference light and the correction light.

[0034] In one embodiment, the receiving component includes: a second laser receiver, wherein the second laser receiver is used to receive the reference light and record the energy of the reference light.

[0035] In one embodiment, the transmission assembly includes: a first conversion mechanism and a first optical fiber transmission mechanism;

[0036] The first conversion mechanism is used to receive the correction light and convert the correction light from a first polarization state to a second polarization state;

[0037] The first optical fiber transmission mechanism is used to receive the correction light in the second polarization state, output the correction light in the second polarization state to the light collection component, receive the reflected correction light output by the light collection component, and transmit the reflected correction light as the detection light to the spectroscopic component.

[0038] In one embodiment, the transmission assembly includes: a first conversion mechanism, a second optical fiber transmission mechanism, and a second conversion mechanism;

[0039] The first conversion mechanism is used to receive the correction light and convert the correction light from a first polarization state to a second polarization state;

[0040] The second optical fiber transmission mechanism is used to receive the correction light in the second polarization state and output the correction light in the second polarization state through total reflection;

[0041] The second conversion mechanism is located on the output light path of the second optical fiber transmission mechanism, and is used to convert the correction light of the second polarization state into circularly polarized light and project it to the light collection component; the second conversion mechanism is also used to receive the reflected correction light output by the light collection component, convert the reflected correction light from the circular polarization state to the first polarization state, and then transmit it to the second optical fiber transmission mechanism, so that the second optical fiber transmission mechanism transmits the reflected correction light of the first polarization state as the detection light to the spectroscopic component.

[0042] In one embodiment, the first conversion mechanism comprises a half wave plate, and the half wave plate is used to receive the correction light and convert the correction light from a first polarization state to a second polarization state before outputting it.

[0043] In one embodiment, the first optical fiber transmission mechanism includes: a second transmission optical fiber and a third transmission optical fiber;

[0044] The second transmission optical fiber is used to receive the correction light in the second polarization state, and transmit the correction light in the second polarization state to the third transmission optical fiber along a third direction;

[0045] The third transmission optical fiber is used to transmit the correction light to the light collection component along a fourth direction, and to receive the reflected correction light of the first polarization state transmitted along the fourth direction, and to transmit the reflected correction light of the first polarization state as the detection light along the fourth direction to the spectroscopic component, and the third direction intersects with the fourth direction.

[0046] In one embodiment, the second optical fiber transmission mechanism comprises: a second transmission optical fiber, a second polarization beam splitter element and a third transmission optical fiber, wherein the second polarization beam splitter element is located in the third transmission optical fiber;

[0047] The second transmission optical fiber is used to receive the correction light in the second polarization state, and transmit the correction light in the second polarization state to the second polarization beam splitting element along a third direction;

[0048] The second polarization beam splitting element totally reflects the correction light of the second polarization state along a fourth direction and outputs it to the second conversion mechanism, and the third direction intersects with the fourth direction;

[0049] The third transmission optical fiber is used to receive the reflected correction light of the first polarization state transmitted along a fourth direction, and transmit the reflected correction light of the first polarization state as the detection light to the light splitting component along the fourth direction.

[0050] In one embodiment, the second conversion mechanism includes: a quarter wave plate, which is used to convert the correction light of the second polarization state into circularly polarized light and project it onto the surface of the object to be measured; and is used to receive the reflected correction light output by the light collection component, convert the reflected correction light from the circular polarization state to the first polarization state, and then transmit it to the second optical fiber transmission mechanism.

[0051] In a third aspect, the present application also provides a calibration device, including: a light source component, a receiving component, a transmission component and a light collection component;

[0052] The light source assembly is used to output reference light and correction light separated from the same reference light, wherein the reference light and the correction light have the same light energy intensity and different polarization states;

[0053] The receiving component is used to receive the reference light and record the energy of the reference light;

[0054] The transmission component is used to receive the correction light, and transmit the correction light to the light collection component after performing polarization state conversion; and receive the reflected correction light output by the light collection component, and transmit the reflected correction light to the temperature measurement component as detection light;

[0055] The light collecting component is used to receive the circularly polarized light output by the transmission component, transmit the circularly polarized light to the surface of the object to be measured, receive the reflected correction light reflected from the surface of the object to be measured, and output the reflected correction light to the transmission component.

[0056] The correction device includes a light source component, a receiving component, a transmission component and a light collection component. The light source component outputs a reference light and a correction light separated from the same reference light. Since the reference light and the correction light have the same light energy intensity but different polarization states, the reference light can be used as a reference for subsequent correction of the correction light. The reference light is received by the receiving component, and the energy of the reference light is recorded, so that the energy parameters of the reference light can be determined so as to be used as a reference for subsequent correction. The output part of the transmission component is located on the transmission light path between the light collection component and the light splitting component. After receiving the correction light, the transmission component converts the polarization state of the correction light and transmits it to the light collection component. The circularly polarized light is transmitted to the object to be measured through the light collection component, and the reflected correction light output by the light collection component is received. The reflected correction light is transmitted as detection light to the temperature measurement component. The temperature measurement component can determine the temperature of the object to be measured based on the detection light. On this basis, the temperature measurement component can be calibrated based on the recording parameters of the reference light and the measurement parameters of the temperature measurement component to ensure the measurement accuracy of the temperature measurement component and avoid the problem of large temperature measurement deviation after long-term use of the temperature measurement component. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0058] Figure 1 This is a schematic diagram of the structure of a temperature measuring device in one embodiment of the present application;

[0059] Figure 2 This is a structural schematic diagram of a temperature measuring device in another embodiment of the present application;

[0060] Figure 3 This is a schematic diagram of the application environment of the calibration device in one embodiment of the present application;

[0061] Figure 4 This is a schematic diagram of an application environment of a calibration device in another embodiment of the present application;

[0062] Figure 5 This is a schematic diagram of an application environment of a calibration device in yet another embodiment of the present application;

[0063] Figure 6 This is a schematic diagram of the application environment of the calibration device in another embodiment of the present application.

[0064] Description of Figure Numbers:

[0065] 1-light collection component, 2-spectroscopy component, 21-first transmission optical fiber, 22-semi-transparent and semi-reflective element, 3-temperature measurement component, 31-first focusing lens, 32-first aperture, 33-filter, 34-photoelectric detector, 4-auxiliary component, 41-second focusing lens, 42-second aperture, 43-visible light detector, 44-first laser transmitter, 45-first laser receiver, 5-light source component, 51-second laser transmitter, 52-third focusing lens, 53-first polarization spectrometer, 6-receiving component, 61-second laser receiver, 7-transmission component, 71-first conversion mechanism, 711-half wave plate, 72-first optical fiber transmission mechanism, 721-second transmission optical fiber, 722-third transmission optical fiber, 73-second optical fiber transmission mechanism, 731-second polarization spectrometer, 74-second conversion mechanism, 741-quarter wave plate, 8-object to be measured.

[0066] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0067] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0068] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0069] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0070] As described in the background art, currently, contact thermometers have disadvantages such as slow response speed and long temperature measurement time, while the non-contact temperature measurement method of the related art is easily affected by factors such as distance and environment, resulting in low measurement accuracy.

[0071] In order to solve the above problems, the present application provides a temperature measuring device, such as Figure 1 and Figure 2 As shown, the temperature measuring device includes: a light collecting component 1, a light splitting component 2, a temperature measuring component 3 and an auxiliary component 4.

[0072] The light collecting component 1 is used to collect the detection light of the object to be measured and converge the detection light. The light collecting component 1 can be an optical probe.

[0073] The spectroscopic component 2 is located on the transmission optical path of the light collection component 1, and is used to receive the detection light and divide the detection light into a first sub-beam transmitted along a first direction and a second sub-beam transmitted along a second direction, and the first direction and the second direction intersect. It should be noted that the spectroscopic component 2 can divide the detection light into beams of different bands, that is, the first sub-beam and the second sub-beam are in different bands. Exemplarily, the first sub-beam can be in the infrared band, so that the temperature measurement component 3 can realize infrared temperature measurement, and the second sub-beam can be in the visible light band, so that the auxiliary component 4 can form an image based on the second sub-beam.

[0074] The temperature measuring component 3 is located on the transmission optical path of the light splitting component 2 along the first direction, and is used to receive the first sub-beam, determine the temperature of the object to be measured according to the first sub-beam, thereby realizing non-contact measurement of the object to be measured.

[0075] The auxiliary component 4 is located on the transmission optical path of the light splitting component 2 along the second direction, and is used to receive the second sub-beam and form an image according to the second sub-beam; or, the auxiliary component 4 is used to output an indication laser, so that the indication laser is emitted on the surface of the object to be measured through the light splitting component 2 and the light collecting component 1; or, the auxiliary component 4 is used to receive the second sub-beam, form an image according to the second sub-beam, and output an indication laser, so that the indication laser is emitted on the surface of the object to be measured through the light splitting component 2 and the light collecting component 1. The auxiliary component 4 can assist in positioning the measurement process so that each component of the measuring device is in a suitable position, thereby improving the accuracy of the temperature measurement of the temperature measuring component 3. It should be noted that the auxiliary component 4 and the temperature measuring component 3 adopt a common optical path design. When the auxiliary component 4 has an imaging function, the pupil distance problem caused by the misalignment of the optical axes of the auxiliary component 4 and the temperature measuring component 3 can be eliminated (the pupil distance will cause the detection position of the auxiliary component 4 and the temperature measuring component 3 to be offset).

[0076] It can be understood that the light collection component 1 collects the detection light of the object to be measured, and converges the detection light and transmits it to the spectroscopic component 2. The spectroscopic component 2 divides the detection light into a first sub-beam and a second sub-beam transmitted in different directions. The first sub-beam is transmitted to the temperature measurement component 3, and the second sub-beam is transmitted to the auxiliary component 4. If the auxiliary component 4 can be imaged according to the second sub-beam, the position of each component of the measuring device can be adjusted based on the imaging information of the auxiliary component 4, and the position of each component of the measuring device can be corrected, thereby improving the accuracy of the measurement process of the temperature measurement component 3, and at the same time, the relevant information of the object to be measured can be obtained based on the imaging information. If the auxiliary component 4 outputs an indication laser, the indication laser can be emitted on the surface of the object to be measured through the spectroscopic component 2 and the light collection component 1. According to the position of the indication laser, the position of each component of the measuring device can be corrected, thereby improving the accuracy of the measurement process of the temperature measurement component 3.

[0077] The temperature measuring device includes: a light collecting component 1, a spectroscopic component 2, a temperature measuring component 3 and an auxiliary component 4. The light collecting component 1 collects the detection light of the object to be measured and converges the detection light to the spectroscopic component 2. The spectroscopic component 2 divides the detection light into a first sub-beam and a second sub-beam. The temperature measuring component 3 receives the first sub-beam and determines the temperature of the object to be measured according to the first sub-beam, thereby realizing the temperature measurement of the object to be measured. In the case where the auxiliary component 4 forms an image according to the second sub-beam, the imaging of the object to be measured can assist the light collecting component 1 to align with the object to be measured, and can also perform position correction on the temperature measuring device based on the image, thereby improving the accuracy of temperature measurement; similarly, in the case where the auxiliary component 4 outputs an indication laser, the indication laser can be emitted on the surface of the object to be measured through the spectroscopic component 2 and the light collecting component 1, so that the position correction of the temperature measuring device can be performed based on the indication laser, thereby improving the accuracy of temperature measurement. In addition, by setting the light collection component 1 as a high-temperature resistant device, setting the light collection component 1 in a high-temperature environment, and setting the other components of the temperature measuring device in a normal environment, the temperature measurement of the object to be measured in a high-temperature environment can be achieved without making the temperature measuring device as a whole resistant to high temperatures, thereby increasing the applicable environment of the temperature measuring device.

[0078] In one embodiment, Figure 1 and Figure 2 As shown, the light splitting component 2 includes: a first transmission optical fiber 21 and a semi-transparent and semi-reflective element 22.

[0079] The first transmission optical fiber 21 is located on the output optical path of the light collection component 1, and is used to receive the detection light and transmit the detection light to the semi-transparent and semi-reflective element 22. The transmission loss of the optical fiber is extremely low, and within a specific wavelength range, the energy loss of the signal when it is transmitted in the optical fiber is very small. Therefore, by transmitting the detection light through the first transmission optical fiber 21, the detection light can be transmitted to the semi-transparent and semi-reflective element 22 completely and stably.

[0080] It should be noted that, when the auxiliary component 4 has an imaging function, the first transmission optical fiber 21 needs to be an image transmission optical fiber, so that the auxiliary component 4 can form an image according to the second sub-beam. When the auxiliary component 4 does not have an imaging function, the first transmission optical fiber 21 can be a light transmission optical fiber, which has a lower cost and is conducive to reducing the cost of the temperature measuring device.

[0081] The semi-transmissive and semi-reflective element 22 is used to split the detection light into a first sub-beam and a second sub-beam, wherein the first sub-beam is transmitted light and the second sub-beam is reflected light.

[0082] Among them, the semi-transparent and semi-reflective element 22 is a special optical element, which has unique optical properties and can divide the received detection light into two parts according to a certain ratio, namely the first sub-beam and the second sub-beam. Among them, the first sub-beam is the light that passes through the semi-transparent and semi-reflective element 22, which we call transmitted light; the second sub-beam is the light reflected back by the semi-transparent and semi-reflective element 22, that is, reflected light. It can be understood that the transmitted light and the reflected light will propagate in different directions, so the temperature measuring component 3 can be used to receive the first sub-beam, and the temperature of the object to be measured can be determined according to the first sub-beam, so as to realize non-contact measurement of the object to be measured. The auxiliary component 4 can be used to receive the second sub-beam. When the auxiliary component 4 has an imaging function, the auxiliary component 4 can be used to image the object to be measured to realize the observation of the object to be measured.

[0083] In the application, the light collecting component 1 and the first transmission optical fiber 21 can be designed as high temperature resistant devices, and the other components of the temperature measuring device are located on the output optical path of the first transmission optical fiber 21. Through this design, the light collecting component 1 and the first transmission optical fiber 21 can be set in a high temperature environment, and the other components of the temperature measuring device can be set in a normal environment. The detection light is transmitted from the high temperature environment to the semi-transparent and semi-reflective element 22 through the light collecting component 1 and the first transmission optical fiber 21. The semi-transparent and semi-reflective element 22 divides the detection light into a first sub-beam and a second sub-beam and transmits them to the temperature measuring component 3 and the auxiliary component 4 respectively. The temperature measurement of the object to be measured is realized through the temperature measuring component 3, and the position of each component is corrected through the auxiliary component 4, so as to realize the temperature measurement of the object to be measured in the high temperature environment. The above structural design does not need to design the temperature measuring device as a high temperature resistant device as a whole, which is conducive to reducing the cost of the temperature measuring device.

[0084] In one embodiment, Figure 1 and Figure 2 As shown, the first sub-beam is located in the infrared light band. The temperature measurement component 3 includes: a first focusing lens 31 , a first aperture 32 , a filter 33 and a photoelectric detector 34 .

[0085] The first focusing lens 31 is used to converge the first sub-beam to the first area. The first aperture 32 is located in the transmission light path of the first focusing lens 31. The filter 33 is located in the output light path of the first aperture 32, and is used to filter the first sub-beam passing through the first aperture 32. The photodetector 34 is located in the first area, and is used to receive the first sub-beam after filtering by the filter 33, and determine the temperature of the object to be measured according to the received first sub-beam.

[0086] The first aperture 32 may be a fixed aperture or a variable aperture, and the first aperture 32 may limit the passing first sub-beam to protect the photodetector 34. The filter 33 may be an infrared filter 33, which may filter the wide wave and only transmit the light of the required wavelength band of the photodetector 34, so that the photodetector 34 can perform accurate temperature measurement.

[0087] It can be understood that the first focusing lens 31 receives the first sub-beam, converges the first sub-beam and outputs it, and the first aperture 32, the filter 33 and the photodetector 34 are sequentially arranged on the output optical path of the first focusing lens 31, and the first sub-beam passes through the first aperture 32 and the filter 33 in sequence, and is finally received by the photodetector 34. In this process, the first aperture 32 limits the first sub-beam to adjust the intensity of the first sub-beam passing through, and the filter 33 filters the first sub-beam passing through the first aperture 32, and outputs a beam of the wavelength band required by the photodetector 34, so that the photodetector 34 can perform accurate temperature measurement.

[0088] In one embodiment, Figure 1 As shown, the second sub-beam is in the visible light band. The auxiliary component 4 comprises: a second focusing lens 41 , a second aperture 42 and a visible light detector 43 .

[0089] The second focusing lens 41 is used to converge the second sub-beam to the second area; the second aperture 42 is located in the transmission light path of the first focusing lens 31; the visible light detector 43 is located in the second area, and is used to receive the second sub-beam passing through the second aperture 42 and form an image based on the received second sub-beam.

[0090] Among them, the second aperture 42 can be a variable aperture, which can be adjusted in real time according to the incident energy, can protect the visible light detector 43, and ensure that the imaging of the visible light detector 43 is clear. The second focusing lens 41 cooperates with the optical lens group in the light collection component 1 to form an image. The second focusing lens 41 receives the second sub-beam, converges the second sub-beam and outputs it. The second aperture 42 and the visible light detector 43 are sequentially arranged on the output light path of the second focusing lens 41, and the second sub-beam will pass through the second aperture 42 and output to the visible light detector 43. In this process, the second aperture 42 limits the second sub-beam, outputs the second sub-beam of appropriate energy to the visible light detector 43, so that the visible light detector 43 forms a clear image of the object to be measured.

[0091] It should be noted that, in application, the visible light detector 43 can be replaced with an eyepiece, and the user can observe the object to be measured visually.

[0092] In one embodiment, Figure 2 As shown, the auxiliary component 4 includes: a first laser emitter 44, which is used to output an indication laser, so as to emit the indication laser onto the surface of the object to be measured through the light splitting component 2 and the light collecting component 1. The auxiliary component 4 may also include a second focusing lens 41, through which the indication laser is converged.

[0093] Among them, a laser emitter is a device that can generate and emit a laser beam. It converts electrical energy, light energy or chemical energy into highly concentrated and coherent laser energy output based on the principle of stimulated radiation. The first laser emitter 44 can be a solid laser emitter, a gas laser emitter, a liquid laser emitter, a semiconductor laser emitter or other types of laser emitters.

[0094] It can be understood that the laser emitter can output an indication laser to the spectroscopic component 2, and the spectroscopic component 2 can transmit part of the indication laser to the light collecting component 1, and emit it on the surface of the object to be measured through the light collecting component 1, thereby realizing the indication function of the auxiliary component 4, so that the user can correct the position of the temperature measuring device based on the indication laser. It should be noted that by reasonably setting the position of the first laser emitter 44, the transmission optical path of the indication laser between the spectroscopic component 2 and the light collecting component 1 and the transmission optical path of the detection light between the spectroscopic component 2 and the light collecting component 1 can be made to coincide, so as to improve the indication accuracy of the indication laser. Exemplarily, in the case where the second sub-beam is reflected light, after the laser emitter outputs the indication laser to the spectroscopic component 2, the spectroscopic component 2 will reflect part of the indication laser to the light collecting component 1, and emit it on the surface of the object to be measured through the light collecting component 1.

[0095] In one embodiment, Figure 2As shown, the auxiliary component 4 further includes: a first laser receiver 45, which is used to receive reflected light reflected from the surface of the object to be measured, and determine the distance between the object to be measured and the temperature measuring device according to the received reflected light.

[0096] Among them, the first laser emitter 44 can emit an indication laser, which is emitted to the surface of the object to be measured through the spectroscopic component 2 and the light collecting component 1, and the laser reflected by the object to be measured is emitted to the first laser receiver 45 through the light collecting component 1 and the spectroscopic component 2.

[0097] It can be understood that after receiving the reflected light, the first laser receiver 45 can determine the distance between the object to be measured and the temperature measuring device according to some specific principles and algorithms. For example, the optical path length between the first laser receiver 45 and the object to be measured can be determined based on the flight time, and the optical path length between the first laser receiver 45 and the light collection component 1 can be predetermined, so the distance between the object to be measured and the temperature measuring device can be determined. Specifically, the time from the laser being emitted to being reflected back to the receiver can be measured. Since the propagation speed of the laser in the air is a known constant (approximately the speed of light c in a vacuum), according to the formula of distance = speed × time / 2 (here divided by 2 because the laser has traveled a round trip), the optical path length between the first laser receiver 45 and the object to be measured can be accurately calculated. After determining the distance between the object to be measured and the temperature measuring device, the position of the temperature measuring device can be adjusted based on the difference between the distance and the theoretical appropriate distance, so that the temperature measuring device is in a suitable position to further improve the accuracy of temperature measurement.

[0098] like Figure 3 and Figure 4 As shown, the embodiment of the present application further provides a calibration device, which is applied to the temperature measuring device of any of the above schemes. The calibration device includes: a light source component 5, a receiving component 6 and a transmission component 7.

[0099] Among them, the light source component 5 is used to output the reference light and the correction light separated from the same reference light. The reference light can be natural light. The reference light and the correction light have the same light energy intensity but different polarization states. The receiving component 6 is used to receive the reference light and record the energy of the reference light. The output part of the transmission component 7 is located on the transmission light path between the light collection component 1 and the spectroscopic component 2. The transmission component 7 is used to receive the correction light, convert the polarization state of the correction light and transmit it to the light collection component 1, and receive the reflected correction light output by the light collection component 1, and transmit the reflected correction light as the detection light to the spectroscopic component 2.

[0100] In one example, when the reference light and the correction light separated from the same reference light are respectively vertically polarized light (S light) and parallel polarized light (P light), the polarization state conversion of the correction light may be conversion of P light into S light. In another example, when the reference light and the correction light separated from the same reference light are respectively parallel polarized light (P light) and vertically polarized light (S light), the polarization state conversion of the correction light may be conversion of S light into P light.

[0101] It can be understood that the light source component 5 outputs reference light and correction light separated from the same reference light, and the reference light is output to the receiving component 6, which records the energy of the reference light. The correction light is output to the transmission component 7, which converts the polarization state of the correction light and transmits it to the light collection component 1, and receives the reflected correction light output by the light collection component 1, and transmits the reflected correction light as detection light to the spectroscopic component 2, so that the spectroscopic component 2 transmits part of the sub-beam to the temperature measurement component 3 after splitting the detection light. Since the light energy intensity of the reference light and the correction light is the same but the polarization state is different, the recorded data of the reference light can be used as a reference for the correction of the temperature measurement component 3 (for example, the correction of the reflectivity), and the temperature measurement component 3 can be corrected based on the recorded parameters of the reference light and the measured parameters of the temperature measurement component 3, so as to ensure the measurement accuracy of the temperature measurement component 3 and avoid the problem of large temperature measurement deviation after long-term use of the temperature measurement component 3.

[0102] It should be noted that, in the intermediate process of the correction light being transmitted to the temperature measurement component 3 , there will be some energy loss due to transmission and refraction, and this loss needs to be compensated to ensure the correction accuracy.

[0103] The correction device is applied to the temperature measuring device of any of the above schemes, and includes a light source component 5, a receiving component 6 and a transmission component 7. The light source component 5 outputs a reference light and a correction light separated from the same reference light. Since the reference light and the correction light have the same light energy intensity but different polarization states, the reference light can be used as a reference for subsequent correction of the correction light. The reference light is received by the receiving component 6, and the energy of the reference light is recorded, so that the energy parameters of the reference light can be determined, so as to be used as a reference for subsequent correction. The output part of the transmission component 7 is located on the transmission light path between the light collection component 1 and the light splitting component 2. After receiving the correction light, the transmission component 7 transmits the correction light to the light collection component 1 after polarizing the correction light, and transmits the correction light to the light collection component 1 through the light collection component 1. The correction light is transmitted to the object to be measured 8, and the reflected correction light output by the light collection component 1 is received, and the reflected correction light is transmitted to the light splitting component 2 as the detection light, so that the light splitting component 2 can separate the detection light into a first sub-beam and a second sub-beam. The temperature measurement component 3 receives the first sub-beam and determines the temperature of the object to be measured 8 according to the first sub-beam. On this basis, the temperature measuring component 3 can be calibrated based on the recorded parameters of the reference light and the measured parameters of the temperature measuring component 3 to ensure the measurement accuracy of the temperature measuring component 3 and avoid the problem of large temperature measurement deviation after long-term use of the temperature measuring component 3.

[0104] In one embodiment, Figure 3 and Figure 4 As shown, the light source assembly 5 includes: a second laser emitter 51 , a third focusing lens 52 and a first polarization beam splitting element 53 .

[0105] The first polarization beam splitter element 53 may be a polarization beam splitter prism. The reference light (natural light) is incident on the polarization beam splitter prism at the Brewster angle, and the reference light is split into S light and P light by the polarization beam splitter prism.

[0106] The second laser emitter 51 is used to emit laser light. The third focusing lens 52 is located on the transmission light path of the second laser emitter 51, and is used to receive the laser light emitted by the second laser emitter 51 and output reference light. The first polarization beam splitter 53 is located on the transmission light path of the reference light, and is used to split the reference light into reference light and correction light.

[0107] It can be understood that the second laser emitter 51 emits laser light to the third focusing lens 52. After passing through the third focusing lens 52, the laser light can be converted into reference light. The reference light can be natural light. Natural light contains light vectors vibrating in all directions perpendicular to the propagation direction, and the amplitudes of the light vectors in all directions are equal, and there is no specific polarization direction. On this basis, after the reference light is transmitted to the first polarization beam splitter 53, the first polarization beam splitter 53 can divide the reference light into reference light and correction light with the same energy intensity and different polarization states, thereby outputting the reference light to the receiving component 6 and outputting the correction light to the transmission component 7, so that the temperature measurement component 3 can be calibrated based on the measurement parameters of the reference light and the measurement parameters of the correction light to ensure the measurement accuracy of the temperature measurement component 3.

[0108] In one embodiment, Figure 3 and Figure 4 As shown, the receiving component 6 includes: a second laser receiver 61, and the second laser receiver 61 is used to receive the reference light and record the energy of the reference light.

[0109] It can be understood that the second laser receiver 61 receives the reference light and can record the energy information of the reference light in real time based on the received reference light. Since the energy of the reference light and the correction light output by the light source component 5 is the same, the energy recording information of the reference light can be used as an energy reference standard. After the temperature measuring component 3 receives the reflected correction light after spectroscopy, the temperature measuring component 3 can be feedback-adjusted based on the measurement data and energy recording information of the temperature measuring component 3 to ensure the accuracy and stability of the measurement of the temperature measuring component 3.

[0110] In one embodiment, Figure 3 As shown, the transmission component 7 includes: a first conversion mechanism 71 and a first optical fiber transmission mechanism 72 .

[0111] The first conversion mechanism 71 is used to receive the correction light and convert the correction light from the first polarization state to the second polarization state. The first optical fiber transmission mechanism 72 is used to receive the correction light in the second polarization state, output the correction light in the second polarization state to the light collection component 1, receive the reflected correction light output by the light collection component 1, and transmit the reflected correction light to the light splitting component 2 as the detection light.

[0112] In one example, the correction light of the first polarization state may be parallel polarized light (P light), and the second polarization state may be vertically polarized light (S light). In another example, the correction light of the first polarization state may be vertically polarized light (S light), and the second polarization state may be parallel polarized light (P light).

[0113] It can be understood that the first conversion mechanism 71 converts the correction light from the first polarization state to the second polarization state, so that the polarization state of the correction light is the same as the polarization state of the reference light, and after the correction light of the second polarization state is transmitted to the first optical fiber transmission mechanism 72, the correction light of the second polarization state can be geometrically output to the light collection component 1 by the first optical fiber transmission mechanism 72 without loss, so that the light collection component 1 outputs the correction light of the second polarization state to the surface of the object to be measured 8. According to the principle of reversibility of the optical path, the light incident on the surface of the object to be measured will be reflected back to the light collection component 1, and the light collection component 1 outputs the reflected correction light to the first optical fiber transmission mechanism 72, and the reflected correction light is completely transmitted to the spectroscopic component 2 through the first optical fiber transmission mechanism 72, and the spectroscopic component 2 will transmit part of the reflected correction light to the temperature measurement component 3, so that the temperature measurement component 3 can be calibrated based on the measurement parameters of the reference light and the measurement parameters of the correction light, so as to ensure the measurement accuracy of the temperature measurement component 3.

[0114] In one embodiment, if Figure 3 As shown, the first optical fiber transmission mechanism 72 includes: a second transmission optical fiber 721 and a third transmission optical fiber 722 .

[0115] The second transmission optical fiber 721 is used to receive the correction light in the second polarization state, and transmit the correction light in the second polarization state to the third transmission optical fiber 722 along the third direction.

[0116] The third transmission optical fiber 722 is used to transmit the correction light to the light collection component 1 along the fourth direction, and receive the reflected correction light of the first polarization state transmitted along the fourth direction, and transmit the reflected correction light of the first polarization state as detection light along the fourth direction to the spectroscopic component 2, and the third direction intersects with the fourth direction.

[0117] The third transmission optical fiber 722 may be a Y-type optical fiber, so that the second transmission optical fiber 721 transmits the correction light of the second polarization state to the third transmission optical fiber 722 along the third direction.

[0118] It can be understood that, through the cooperation of the second transmission optical fiber 721 and the third transmission optical fiber 722, the transmission direction of the correction light can be changed, so that the correction light is changed from the third direction to the fourth direction, so that the correction light can be geometrically transmitted to the light collection component 1 without loss. The third transmission optical fiber 722 can receive the reflected correction light of the first polarization state transmitted along the fourth direction, and transmit the reflected correction light of the first polarization state as the detection light to the spectroscopic component 2 along the fourth direction. The spectroscopic component 2 will transmit part of the reflected correction light to the temperature measurement component 3, so that the temperature measurement component 3 can be calibrated based on the measurement parameters of the reference light and the measurement parameters of the correction light, so as to ensure the measurement accuracy of the temperature measurement component 3.

[0119] In another embodiment, Figure 4 As shown, the transmission component 7 includes: a first conversion mechanism 71 , a second optical fiber transmission mechanism 73 and a second conversion mechanism 74 .

[0120] The first conversion mechanism 71 is used to receive the correction light and convert the correction light from the first polarization state to the second polarization state. The second optical fiber transmission mechanism 73 is used to receive the correction light in the second polarization state and output the correction light in the second polarization state by total reflection. The second conversion mechanism 74 is located on the output light path of the second optical fiber transmission mechanism 73, and is used to convert the correction light in the second polarization state into circularly polarized light and project it to the light collection component 1; the second conversion mechanism 74 is also used to receive the reflected correction light output by the light collection component 1, convert the reflected correction light from the circular polarization state to the first polarization state, and then transmit it to the second optical fiber transmission mechanism 73, so that the second optical fiber transmission mechanism 73 transmits the reflected correction light in the first polarization state as the detection light to the spectroscopic component 2.

[0121] In this embodiment, the first conversion mechanism 71 receives the correction light, converts the correction light from the first polarization state to the second polarization state, and transmits the correction light in the second polarization state to the second optical fiber transmission mechanism 73. The second optical fiber transmission mechanism 73 receives the correction light in the second polarization state and totally reflects the correction light in the second polarization state and outputs it, thereby avoiding the loss of the correction light in the second polarization state in the second optical fiber transmission mechanism 73, which is beneficial to improving the subsequent correction accuracy. After receiving the correction light of the second polarization state, the second conversion mechanism 74 converts the correction light of the second polarization state into circularly polarized light and projects it to the light collection component 1, and emits it to the surface of the object to be measured 8 through the light collection component 1, then the reflected correction light reflected back from the surface of the object to be measured 8 is circularly polarized light, and the reflected correction light is output to the second conversion mechanism 74 through the light collection component 1, and the second conversion mechanism 74 converts the reflected correction light from the circular polarization state to the first polarization state and then transmits it to the second optical fiber transmission mechanism 73, so that the second optical fiber transmission mechanism 73 transmits the reflected correction light of the first polarization state as the detection light to the spectroscopic component 2, and the spectroscopic component 2 transmits part of the reflected correction light to the temperature measuring component 3, so that the temperature measuring component 3 can be calibrated based on the measurement parameters of the reference light and the measurement parameters of the correction light, thereby ensuring the measurement accuracy of the temperature measuring component 3.

[0122] It can be understood that since the circularly polarized light will not change its polarization state inside the light collection component 1 and only its rotation direction will change, by enabling the second conversion mechanism 74 to increase the step of converting the correction light of the second polarization state into circularly polarized light, and the step of converting the reflected correction light from the circular polarization state to the first polarization state, a large deviation in the polarization state of the reflected correction light finally output to the spectroscopic component 2 can be avoided, which is beneficial to improving the measurement accuracy of the temperature measuring component 3, and further beneficial to improving the correction accuracy of the temperature measuring component 3.

[0123] In one embodiment, Figure 3 and Figure 4 As shown, the first conversion mechanism 71 includes a half wave plate 711, and the half wave plate 711 is used to receive the correction light and convert the correction light from the first polarization state to the second polarization state before outputting it.

[0124] It can be understood that when light passes through the half wave plate 711, the light components propagating along the fast axis and the slow axis will produce different phase delays. The thickness of the half wave plate 711 is designed so that the light propagating along the fast axis and the slow axis will produce a phase difference equivalent to the optical path difference of half the wavelength after passing through the wave plate. The half wave plate 711 can be used to achieve the conversion of the polarization state of the corrected light.

[0125] Exemplarily, the correction light of the first polarization state is parallel polarized light (P light), and the second polarization state is vertical polarized light (S light), and the correction light can be converted into S light by the half wave plate 711. In another example, the correction light of the first polarization state can be vertical polarized light (S light), and the second polarization state can be parallel polarized light (P light), and the correction light can be converted into P light by the half wave plate 711. By converting the correction light from the first polarization state to the second polarization state by the half wave plate 711, the polarization state of the correction light and the reference light can be made the same, thereby reducing the difference between the correction light and the reference light, which is conducive to calibrating the temperature measurement component 3 using the reference light as a reference.

[0126] In one embodiment, Figure 4 As shown, the second optical fiber transmission mechanism 73 includes: a second transmission optical fiber 721, a second polarization beam splitter 731 and a third transmission optical fiber 722, wherein the second polarization beam splitter 731 is located inside the third transmission optical fiber 722. The second polarization beam splitter 731 may also be a polarization beam splitter prism.

[0127] The second transmission optical fiber 721 is used to receive the correction light of the second polarization state, and transmit the correction light of the second polarization state to the second polarization splitter element 731 along the third direction. The second polarization splitter element 731 totally reflects the correction light of the second polarization state along the fourth direction and outputs it to the second conversion mechanism 74, and the third direction intersects with the fourth direction. The third transmission optical fiber 722 is used to receive the reflected correction light of the first polarization state transmitted along the fourth direction, and transmit the reflected correction light of the first polarization state as the detection light to the splitter component 2 along the fourth direction.

[0128] The third transmission optical fiber 722 may be a Y-type optical fiber, so that the second transmission optical fiber 721 transmits the correction light of the second polarization state to the second polarization beam splitter 731 inside the third transmission optical fiber 722 along the third direction.

[0129] It can be understood that the correction light in the third direction is transmitted to the second polarization beam splitter 731 through the second transmission optical fiber 721, and the second polarization beam splitter 731 totally reflects the correction light in the third direction to the fourth direction, which can change the transmission direction of the correction light losslessly, so that the correction light is changed from the third direction to the fourth direction, so that the correction light can be transmitted losslessly to the light collection component 1. Since the second polarization beam splitter 731 is located inside the third transmission optical fiber 722, the reflected correction light returns along the optical path of the correction light in the reverse direction and enters the third transmission optical fiber 722. The third transmission optical fiber 722 can receive the reflected correction light of the first polarization state transmitted along the fourth direction, and transmit the reflected correction light of the first polarization state as the detection light to the beam splitter 2 along the fourth direction. The beam splitter 2 will transmit part of the reflected correction light to the temperature measurement component 3, so that the temperature measurement component 3 can be calibrated based on the measurement parameters of the reference light and the measurement parameters of the correction light, so as to ensure the measurement accuracy of the temperature measurement component 3.

[0130] In one embodiment, if Figure 4 As shown, the second conversion mechanism 74 includes: a quarter wave plate 741, which is used to convert the correction light in the second polarization state into circularly polarized light and project it onto the surface of the object to be measured 8; and is used to receive the reflected correction light output by the light collection component 1, convert the reflected correction light from the circular polarization state to the first polarization state, and then transmit it to the second optical fiber transmission mechanism 73.

[0131] It can be understood that the correction light is converted into circularly polarized light by the quarter wave plate 741 and projected onto the surface of the object to be measured 8. The characteristics of the circularly polarized light can be used to better obtain information on the surface of the object to be measured 8, such as surface roughness, shape, etc. The reflected correction light will pass through the quarter wave plate 741 when it returns in the reverse direction along the optical path of the correction light. The quarter wave plate 741 converts the reflected correction light back to the first polarization state, which is convenient for subsequent optical fiber transmission and makes the polarization state of the reflected correction light the same as that of the reference light, thereby reducing the difference between the correction light and the reference light, which is conducive to calibrating the temperature measurement component 3 using the reference light as a reference.

[0132] In another embodiment, Figure 5 and Figure 6 As shown, an embodiment of the present application further provides a correction device, including: a light source component 5, a receiving component 6, a transmission component 7 and a light collection component 1.

[0133] The light source assembly 5 is used to output reference light and correction light separated from the same reference light, wherein the reference light and the correction light have the same light energy intensity but different polarization states.

[0134] The receiving component 6 is used to receive the reference light and record the energy of the reference light.

[0135] The transmission component 7 is used to receive the correction light, and transmit the correction light to the light collection component 1 after converting the polarization state; and receive the reflected correction light output by the light collection component 1, and transmit the reflected correction light as detection light to the temperature measurement component 3, wherein the second polarization state is the same as the polarization state of the reference light.

[0136] The light collection component 1 is used to receive the circularly polarized light output by the transmission component 7, transmit the circularly polarized light to the surface of the object to be measured 8, receive the reflected correction light reflected from the surface of the object to be measured 8, and output the reflected correction light to the transmission component 7.

[0137] It should be noted that the difference between the calibration device of the present embodiment and the calibration device of the previous embodiment is that the calibration device of the present embodiment directly calibrates the temperature measuring component 3, without considering the light splitting component 2 and the auxiliary component 4. Therefore, the calibration device of the present embodiment can be applied to the corresponding device including the temperature measuring component 3, and is not limited to the temperature measuring device of the previous scheme. It should also be noted that the specific structures of the light source component 5, the receiving component 6, the transmission component 7 and the light collection component 1 can refer to the description of the previous embodiment, and will not be repeated here.

[0138] The above-mentioned calibration device includes a light source component 5, a receiving component 6, a transmission component 7 and a light collection component 1. The light source component 5 outputs a reference light and a calibration light separated from the same reference light. Since the reference light and the calibration light have the same light energy intensity but different polarization states, the reference light can be used as a reference for subsequent calibration of the calibration light. By receiving the reference light through the receiving component 6 and recording the energy of the reference light, the energy parameters of the reference light can be determined so as to be used as a reference for subsequent calibration. The output part of the transmission component 7 is located on the transmission light path between the light collection component 1 and the light splitting component 2. After receiving the calibration light, the transmission component 7 converts the polarization state of the calibration light and transmits it to the light collection component 1. The circularly polarized light is transmitted to the object to be measured 8 through the light collection component 1, and the reflected calibration light output by the light collection component 1 is received, and the reflected calibration light is transmitted as detection light to the temperature measurement component 3. The temperature measurement component 3 can determine the temperature of the object to be measured 8 based on the detection light. On this basis, the temperature measuring component 3 can be calibrated based on the recorded parameters of the reference light and the measured parameters of the temperature measuring component 3 to ensure the measurement accuracy of the temperature measuring component 3 and avoid the problem of large temperature measurement deviation after long-term use of the temperature measuring component 3.

[0139] The above description is only an exemplary implementation of the present application and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the technical concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A temperature measuring device, characterized in that: include: A light collecting component, used to collect detection light of the object to be measured and converge the detection light; A light splitting component, located on the transmission light path of the light collecting component, for receiving the detection light and dividing the detection light into a first sub-beam transmitted along a first direction and a second sub-beam transmitted along a second direction, wherein the first direction and the second direction intersect; a temperature measuring component, located on the transmission optical path of the light splitting component along the first direction, and used for receiving the first sub-beam and determining the temperature of the object to be measured according to the first sub-beam; An auxiliary component is located on the transmission light path of the spectroscopic component along the second direction, and is used to receive the second sub-beam and form an image based on the second sub-beam; and / or, the auxiliary component is used to output an indication laser so as to emit the indication laser onto the surface of the object to be measured via the spectroscopic component and the light collection component.

2. The temperature measuring device according to claim 1, characterized in that: The light splitting component comprises: a first transmission optical fiber and a semi-transparent and semi-reflective element; The first transmission optical fiber is located on the output optical path of the light collection component, and is used to receive the detection light and transmit the detection light to the semi-transmissive and semi-reflective element; The semi-transmissive and semi-reflective element is used to split the detection light into the first sub-beam and the second sub-beam, wherein the first sub-beam is transmitted light and the second sub-beam is reflected light.

3. The temperature measuring device according to claim 1, characterized in that: The first sub-beam is in the infrared light band; the temperature measurement component comprises: a first focusing lens, a first aperture, a filter and a photoelectric detector; The first focusing lens is used to converge the first sub-beam to a first area; The first aperture is located in the transmission light path of the first focusing lens; The filter is located in the output light path of the first aperture, and is used for filtering the first sub-beam passing through the first aperture; The photoelectric detector is located in the first area, and is used to receive the first sub-beam after filtering by the filter, and determine the temperature of the object to be measured according to the received first sub-beam.

4. The temperature measuring device according to claim 1, characterized in that: The temperature measurement component includes: a first focusing lens, and the second sub-beam is located in the visible light band; the auxiliary component includes: a second focusing lens, a second aperture and a visible light detector; The second focusing lens is used to converge the second sub-beam to a second area; The second aperture is located in the transmission light path of the first focusing lens; The visible light detector is located in the second area, and is used for receiving the second sub-beam passing through the second aperture, and forming an image according to the received second sub-beam.

5. The temperature measuring device according to claim 1, characterized in that: The auxiliary component includes: a first laser emitter, which is used to output the indication laser, so as to emit the indication laser onto the surface of the object to be measured through the light splitting component and the light collecting component.

6. The temperature measuring device according to claim 5, characterized in that: The auxiliary component further includes: a first laser receiver, which is used to receive reflected light reflected from the surface of the object to be measured, and determine the distance between the object to be measured and the temperature measuring device according to the received reflected light.

7. A calibration device, characterized in that: The calibration device is applied to the temperature measuring device according to any one of claims 1 to 6; the calibration device comprises: A light source assembly, used for outputting a reference light and a correction light separated from the same reference light, wherein the reference light and the correction light have the same light energy intensity and different polarization states; A receiving component, used for receiving the reference light and recording the energy of the reference light; A transmission component, wherein the output portion of the transmission component is located on the transmission light path between the light collection component and the spectroscopic component, and the transmission component is used to receive the correction light, transmit the correction light to the light collection component after polarization state conversion, and receive the reflected correction light output by the light collection component, and transmit the reflected correction light to the spectroscopic component as the detection light.

8. The calibration device according to claim 7, characterized in that: The light source assembly includes: a second laser emitter, a third focusing lens and a first polarization beam splitting element; The second laser emitter is used to emit laser; The third focusing lens is located on the transmission light path of the second laser emitter, and is used to receive the laser emitted by the second laser emitter and output reference light; The first polarization beam splitting element is located on the transmission light path of the reference light, and is used to split the reference light into the reference light and the correction light.

9. The calibration device according to claim 7, characterized in that: The receiving component includes: a second laser receiver, and the second laser receiver is used to receive the reference light and record the energy of the reference light.

10. The calibration device according to claim 7, characterized in that: The transmission assembly comprises: a first conversion mechanism and a first optical fiber transmission mechanism; The first conversion mechanism is used to receive the correction light and convert the correction light from a first polarization state to a second polarization state; The first optical fiber transmission mechanism is used to receive the correction light in the second polarization state, output the correction light in the second polarization state to the light collection component, receive the reflected correction light output by the light collection component, and transmit the reflected correction light as the detection light to the spectroscopic component.

11. The calibration device according to claim 7, characterized in that: The transmission assembly comprises: a first conversion mechanism, a second optical fiber transmission mechanism and a second conversion mechanism; The first conversion mechanism is used to receive the correction light and convert the correction light from a first polarization state to a second polarization state; The second optical fiber transmission mechanism is used to receive the correction light in the second polarization state and output the correction light in the second polarization state through total reflection; The second conversion mechanism is located on the output light path of the second optical fiber transmission mechanism, and is used to convert the correction light of the second polarization state into circularly polarized light and project it to the light collection component; the second conversion mechanism is also used to receive the reflected correction light output by the light collection component, convert the reflected correction light from the circular polarization state to the first polarization state, and then transmit it to the second optical fiber transmission mechanism, so that the second optical fiber transmission mechanism transmits the reflected correction light of the first polarization state as the detection light to the spectroscopic component.

12. The calibration device according to claim 10 or 11, characterized in that: The first conversion mechanism includes a half-wave plate, and the half-wave plate is used to receive the correction light and convert the correction light from a first polarization state to a second polarization state before outputting it.

13. The calibration device according to claim 10, characterized in that: The first optical fiber transmission mechanism includes: a second transmission optical fiber and a third transmission optical fiber; The second transmission optical fiber is used to receive the correction light in the second polarization state, and transmit the correction light in the second polarization state to the third transmission optical fiber along the third direction; The third transmission optical fiber is used to transmit the correction light to the light collection component along a fourth direction, and to receive the reflected correction light of the first polarization state transmitted along the fourth direction, and to transmit the reflected correction light of the first polarization state as the detection light along the fourth direction to the spectroscopic component, and the third direction intersects with the fourth direction.

14. The calibration device according to claim 11, characterized in that: The second optical fiber transmission mechanism comprises: a second transmission optical fiber, a second polarization beam splitting element and a third transmission optical fiber, wherein the second polarization beam splitting element is located in the third transmission optical fiber; The second transmission optical fiber is used to receive the correction light in the second polarization state, and transmit the correction light in the second polarization state to the second polarization beam splitting element along a third direction; The second polarization beam splitting element totally reflects the correction light of the second polarization state along a fourth direction and outputs it to the second conversion mechanism, and the third direction intersects with the fourth direction; The third transmission optical fiber is used to receive the reflected correction light of the first polarization state transmitted along a fourth direction, and transmit the reflected correction light of the first polarization state as the detection light to the light splitting component along the fourth direction.

15. The calibration device according to claim 11, characterized in that: The second conversion mechanism includes: a quarter wave plate, which is used to convert the correction light in the second polarization state into circularly polarized light and project it onto the surface of the object to be measured; and is used to receive the reflected correction light output by the light collection component, convert the reflected correction light from the circular polarization state to the first polarization state, and then transmit it to the second optical fiber transmission mechanism.

16. A calibration device, characterized in that: include: Light source component, receiving component, transmission component and light collection component; The light source assembly is used to output reference light and correction light separated from the same reference light, wherein the reference light and the correction light have the same light energy intensity and different polarization states; The receiving component is used to receive the reference light and record the energy of the reference light; The transmission component is used to receive the correction light, and transmit the correction light to the light collection component after performing polarization state conversion; and receive the reflected correction light output by the light collection component, and transmit the reflected correction light as detection light to the temperature measurement component, wherein the second polarization state is the same as the polarization state of the reference light; The light collecting component is used to receive the circularly polarized light output by the transmission component, transmit the circularly polarized light to the surface of the object to be measured, receive the reflected correction light reflected from the surface of the object to be measured, and output the reflected correction light to the transmission component.

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