CN217483681U - Novel industrial infrared temperature measurement optical system - Google Patents

Abstract

The utility model discloses a novel industrial infrared temperature measurement optical system, which comprises an optical system main body and a gas purging device, wherein the optical system main body is arranged at the upper part of the gas purging device; the optical system main body comprises an auxiliary optical lens barrel, a reticle, a light splitting lens seat assembly and a filter lens, wherein the reticle, the light splitting lens seat assembly and the filter lens are sequentially arranged in the auxiliary optical lens barrel from top to bottom; the main body adopts an elaborate and high-precision mechanical design, so that the parameter consistency of the batch of the optical paths of the product is good, and particularly the parameter consistency of a 45-degree turning optical system is very good; the utility model discloses the split type design of main lens cone, auxiliary lens barrel, accessible modification convex lens parameter cooperation modification main lens cone parameter adjustment infrared detection optical distance coefficient ratio (D is S than) to do not influence auxiliary lens cone and vertical direction observation light path, major structure can not receive the influence, very big improvement the adaptability of product, reduced research and development cost and research and development cycle.

Description

Novel industrial infrared temperature measurement optical system

Technical Field

The utility model belongs to the technical field of infrared temperature measurement, concretely relates to novel infrared temperature measurement optical system of industry.

Background

Most of the traditional temperature measurement in the industrial high-temperature environment field is a handheld infrared thermometer, and in the process of manual measurement, errors exist between the temperature obtained by manual measurement and the real temperature due to error factors such as manual alignment of a target object and operation, and meanwhile, the manual measurement value is discrete hysteresis data, so that the normal operation of an industrial intelligent real-time control system is directly influenced or cannot be supported.

At present, an existing industrial online optical fiber infrared thermometer is generally designed with an excessively complex optical system structure for ensuring aiming and accurate measurement, so that the conditions of quite high production difficulty coefficient of a product, long production period, poor product consistency and the like are caused, the overall production cost of the product is excessively high, the system implementation cost of enterprise intelligent control transformation is greatly increased, and popularization and execution of large-area intelligent transformation of an industrial process control system by a user are not facilitated.

Meanwhile, a complex precise optical system also leads to the guidance of relevant professionals during field installation, and the precise optical system is difficult to achieve industrial waterproof, anticorrosion and antifouling effects, cannot adjust the angle accurately according to the position of a measured object on the field, causes unreal temperature detection, is difficult to ensure long-time uninterrupted operation of a product all day long and all weather, and cannot achieve maintenance-free. The more complex the hardware structure is, the higher the probability of the fault per se is, and the reliability is naturally reduced, so that the conditions that the service life of the instrument is short, the maintenance workload is extremely unchanged and the like are generally caused.

The traditional industrial infrared temperature measurement optical lens is generally fixedly installed, can only be finely adjusted and aligned at the initial installation stage, has no human eye observation window, is quite unchanged in debugging and installation, and is not convenient for later-stage equipment maintenance. The traditional industrial infrared temperature measurement optical lens has fixed parameters, and the optical D can not be modified according to the field requirements: the S ratio (distance coefficient ratio) causes excessive product models and excessive cost for modifying parameters of the optical system.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that it is big to above-mentioned prior art error, the angle can't be adjusted, the unable nimble adjustment of lens cone parameter, the observable light route of unmanned naked eye, product adaptability is poor, thereby it is difficult to lead to the extensive application of industry intelligence temperature measurement sensing system, the debugging is difficult, the production cycle is long, with high costs, waterproof antifouling effect is poor etc. is not enough, a high accuracy is provided here, on-line, exquisite type, the lens cone parameter is easily modified, production cycle is short, high production efficiency, low costs, waterproof antifouling effectual, can freely adjust installation angle's novel industry infrared temperature measurement optical system.

An object of the utility model is to provide a novel infrared temperature measurement optical system of industry.

The utility model discloses the technical scheme who adopts does:

a novel industrial infrared temperature measurement optical system comprises an optical system main body and a gas purging device with a universal joint, wherein the optical system main body is arranged at the upper part of the gas purging device;

the optical system main part includes the auxiliary lens cone, from last to setting gradually reticle, beam split lens seat subassembly, the optical filter in the optical lens cone down, and the auxiliary lens cone is hollow structure, and the top of the auxiliary lens cone is equipped with the antifouling lid of camera lens, and the face of the auxiliary lens cone is equipped with square groove, and the middle part that corresponds square groove is equipped with the lens cone and leads to the unthreaded hole, and the main cone is installed in auxiliary lens cone groove department and is locked with 4 screws. The main optical lens cone is also provided with a square groove, the optical fiber connector is arranged in the square groove of the main lens cone, the center of the optical fiber connector is completely communicated with the side surface light through hole of the auxiliary lens cone and the light through hole of the main lens cone, and on one optical axis, the plane of the main lens cone corresponding to the end of the optical fiber connector is provided with an optical fiber sheath connector;

the spectroscope plate seat component comprises a spectroscope plate seat and an optical spectroscope lens, the optical splitter comprises a splitter plate, wherein a square precise 45-degree inclined plane groove is formed in a splitter plate seat, optical splitter lenses are placed in the square precise 45-degree inclined plane groove and are fixedly pressed through the splitter plate, a 45-degree included angle between each optical splitter lens and a horizontal plane is ensured, four vertex angles of the square precise 45-degree inclined plane groove are outwards expanded into round holes, the optical splitter lenses are convenient to disassemble and assemble, lens seat light through holes which are inclined outwards from top to bottom are formed in the lower portion of the splitter plate seat, the bottom end of each lens seat light through hole is communicated with the inside of an optical lens barrel, the top end of each lens seat light through hole faces the optical splitter lenses, light through round holes are formed in the cylindrical surface of the splitter plate seat, one end of each light through round hole is aligned with the light through holes in the optical lens barrels, and the other end of each light through round hole faces the optical splitter lenses to serve as reflected light channels of the optical splitter lenses.

As the utility model discloses a preferred, gaseous device that sweeps contains universal regulation ball and includes air chamber and connection trachea, the air chamber is hollow structure, the inside of air chamber is divided into first and lower half that are linked together, first and lower half all are the cross section diameter that cylindrical and first are greater than the cross section diameter of lower half, the lower part of optical lens barrel is passed first and is stretched into in the lower half, and optical lens barrel's lateral wall and lower half lateral wall form 0.5 mm's annular slit, optical lens barrel's lateral wall, first wall encloses and forms the air storage chamber, correspond first department on the air chamber and seted up the air inlet, it is linked together through air inlet and air storage chamber to connect the trachea.

As the utility model discloses a preferred, the middle part of assisting in the optical lens section of thick bamboo is equipped with the horizontal location step for the vertical direction location of spectroscope piece seat, the back of optical lens section of thick bamboo is equipped with the screw hole, and the conical surface is tightly decided the screw and is passed screw hole from assisting the optical lens section of thick bamboo outside and pass through groove locking and horizontal axial positioning spectroscope piece seat.

As the utility model discloses a preferred, the middle part of auxiliary lens cone is equipped with square groove, main optical lens cone installs in square groove and locks through 4 hexagon socket head cap screws.

As the optimization of the utility model, a circular asbestos heat insulation gasket is arranged between the auxiliary lens cone and the air chamber.

As the utility model discloses a preferred, the split type design of main lens cone, auxiliary lens cone, accessible modification convex lens parameter cooperation modification main lens cone parameter adjustment infrared detection optical distance coefficient ratio (D: S ratio) to do not influence auxiliary lens cone and vertical direction observation light path, major structure can not receive the influence, very big improvement the adaptability of product, reduced research and development cost and research and development cycle.

As the utility model discloses a preferred, gaseous antifouling device middle part that sweeps still includes universal regulation ball, can let the adaptation industrial site that the product is nimble by angle modulation and alignment between side object and the product to through air chamber seat screw locking.

As the utility model discloses a preferred, it fills up to be equipped with the lens cap between assisting optical lens barrel and the antifouling lid of camera lens, the graticule passes through lock ring, packing ring setting in optical lens barrel, the filter passes through lock ring, packing ring and installs in assisting the lens barrel bottom. The edges of the locking ring, the gasket and the gasket are coated with high-temperature-resistant, corrosion-resistant and flexible sealing silicon rubber to ensure the waterproof sealing property of the optical system main body, and the joints of the auxiliary lens cone and the square groove of the main lens cone and the joints between the optical fiber connector and the square groove are coated with sealing waterproof rubber.

As the utility model discloses a preferred, optical filtering, optics beam split lens, graticule, convex lens are all made by the optical glass of high light transmissivity, high temperature resistant, high finish coating film, optic fibre sheath connector adopts high temperature resistant, waterproof sealing formula interface.

As the utility model discloses a preferred, square and circular flange packing ring is silicon rubber pad, or asbestos pad, or polytetrafluoroethylene packing ring.

As the utility model discloses a preferred, circular regulation ball upper portion covers has the semicircle apron to be used for the regulation ball spacing and dustproof.

As the utility model discloses a preferred, the used air supply of gaseous dirt-proof device that sweeps is nitrogen gas, or the industrial instrument gas after deoiling dehumidification dust removal.

The beneficial effects of the utility model are that:

1. the utility model discloses the optical system main part has adopted exquisite type, the mechanical design of high accuracy, and it is good to have guaranteed that the parameter uniformity of product light path batchization is good, and especially 45 formula optical system's of turning parameter uniformity is very good to movable rotatory angular adjustment light path, the design and the conical surface of the interior horizontal positioning step of optical lens cone are fixed through two jackscrews on tight set screw of optical lens cone and the spectroscope seat, have greatly reduced manufacturing cost, have improved production efficiency.

2. The utility model discloses the design benefit of fiber sheath connector, general high temperature resistant, the design of waterproof sealing formula interface, easily corrugated pipe connects the installation, and protection optic fibre does not receive the condition damage such as high temperature and mechanical collision.

3. The outer side wall and the lower half side wall of the optical lens barrel form a 0.5mm annular slit, so that the pressure and the flow direction of gas are well ensured, a good antifouling effect is provided for protecting a lens, and a certain cooling effect is achieved; the all-weather application antifouling requirement of the optical system on an industrial site can be met; especially, the normal work of the precision optical system is ensured under severe environments with high pollution, such as high dust, high corrosion, high environmental temperature, high humidity and the like in industrial coking, iron making, steel making and the like.

4. The utility model discloses the split type design of main lens cone, auxiliary lens barrel, accessible modification convex lens parameter cooperation modification main lens cone parameter adjustment infrared detection optical distance coefficient ratio (D is S than) to do not influence auxiliary lens cone and vertical direction observation light path, major structure can not receive the influence, very big improvement the adaptability of product, reduced research and development cost and research and development cycle.

5. The utility model discloses air chamber bottom design has spherical universal joint, and there is spherical inner chamber air chamber seat inside, and air chamber and base form sphere mating structure, can realize accessible universal regulation to through two locking screw fixed adjusting positions. The square flange gasket connected with the base not only can play a role in sealing and heat insulation, but also can achieve the function of finely adjusting the horizontal angle.

6. The vertical direction is a full parallel optical path, and a large observation window is convenient for personnel to align the detection equipment to a measurement area through the observation window.

7. A matched optical sighting telescope interface is reserved in the vertical direction, and when a long-distance target (the distance is more than ten meters) is measured and the human eye cannot directly aim, auxiliary equipment aims and measures.

8. The utility model discloses the flexible sealed silicon rubber of high temperature resistant, the anticorrosion of coating has played strict waterproof, antifouling effect on the sealed pad of lens cap, packing ring and each packing ring very greatly.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the explosion structure of the present invention;

fig. 3 is a side sectional view of the present invention;

fig. 4 is an exploded view of the spectroscopic lens holder assembly of the present invention;

fig. 5 is an optical path diagram of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be fully described with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example 1

Referring to fig. 1 to 4, a novel industrial infrared temperature measurement optical system includes an optical system main body and an angle-adjustable gas purging device. The optical system main body is arranged at the upper part of the angle-adjustable gas purging device.

As shown in fig. 2 and 3, the optical system main body includes an auxiliary optical barrel 10, a reticle 5, a dichroic mirror holder assembly 9, a filter 13, and a dichroic mirror 8, which are sequentially disposed in the auxiliary optical barrel 10 from top to bottom.

Specifically, as shown in fig. 2 and 3, the auxiliary optical barrel 10 has a hollow structure. The top of the auxiliary optical lens barrel 10 is provided with a lens antifouling cover 1. The front surface of the auxiliary optical barrel 10 is provided with a square groove. The auxiliary optical lens barrel 10 is provided with a lens barrel light through hole corresponding to the middle of the square groove. The main optical barrel 25 is mounted in the square groove. The other end of the main optical lens barrel 25 is also provided with a square groove, and the optical fiber connector 24 is installed in the square groove. The center of the optical fiber connector 24 is completely aligned with the center of the light-passing holes of the auxiliary optical lens barrel 10 and the main optical lens barrel 25. The optical fiber sheath connector 22 is arranged on the plane of the end, corresponding to the optical fiber connector 24, of the main optical lens barrel 25, the optical fiber sheath connector 22 adopts a standard high-temperature-resistant and waterproof sealing type interface, an industrial standard waterproof, anti-corrosion, high-temperature-resistant, anti-bending and anti-collision corrugated pipe sleeve is easy to externally install, and the optical fiber is protected from being damaged by high temperature, mechanical collision and other conditions.

As shown in fig. 4, the spectroscopic lens holder assembly includes a spectroscopic lens holder 9, an optical spectroscopic lens 8, and a spectroscopic lens pressing plate 7.

Specifically, a square precise 45-degree inclined groove is arranged on the light splitting lens seat 9. The optical splitting lens 8 is placed in a square precise 45-degree inclined plane groove and is locked by a screw through the light splitting lens plate 7, and an included angle of 45 degrees between the optical splitting lens 8 and the horizontal plane is guaranteed. Four vertex angles of the square precise 45-degree inclined plane groove are outwards expanded into round holes, so that the optical splitting lens 8 can be conveniently disassembled and assembled.

As shown in FIG. 3, the lower portion of the light splitter plate holder 9 is provided with a light through hole of the lens holder which is inclined outward from top to bottom. The bottom end of the lens seat light through hole is communicated with the inside of the auxiliary optical lens cone 10. The top end of the lens seat light through hole is opposite to the optical beam splitting lens 8.

As shown in fig. 3 and 4, the cylindrical surface of the spectroscopic lens holder 9 is provided with a light passing circular hole, one end of the light passing circular hole is aligned with the lens barrel light passing hole on the main optical lens barrel 25, and the other end of the light passing circular hole faces the optical spectroscopic lens 8 as a reflected light channel of the optical spectroscopic lens 8.

As shown in fig. 2 and 3, the gas purging device includes a gas chamber 17 and a connecting gas pipe 18. The air chamber 17 has a hollow structure, and the interior of the air chamber 17 is divided into an upper half and a lower half that communicate with each other. The upper half part and the lower half part are both cylindrical, and the cross-sectional diameter of the upper half part is larger than that of the lower half part.

Specifically, as shown in fig. 3, the lower portion of the auxiliary optical barrel 10 passes through the upper half portion and extends into the lower half portion 17, and an annular slit (i.e., an annular wind wall) of 0.5mm is formed between the outer side wall of the auxiliary optical barrel 10 and the side wall of the lower half portion 17; the outer side wall of the auxiliary optical lens barrel 10 and the wall of the upper half part 17 enclose to form an air storage cavity; an air inlet hole is arranged on the air chamber 17 corresponding to the upper half part, and the connecting air pipe 18 is communicated with the air storage cavity 17 through the air inlet hole; under the condition that gas is continuously supplied, the annular air wall is guaranteed to be always blown and swept to the lower part of the surface of the filter lens 13, a good antifouling effect is provided for protecting the lens, and a certain cooling effect is achieved.

As shown in fig. 3, a horizontal positioning step is provided in the middle of the auxiliary optical barrel 10 for positioning the dichroic lens holder 9 in the vertical direction. Referring to fig. 3 and 4, a screw hole 11 is formed in the back of the auxiliary optical barrel 10, and a set screw 11 passes through the screw hole from the outside of the auxiliary optical barrel 10 and is locked by a positioning groove and horizontally and axially positions the spectroscope plate holder 9.

As shown in fig. 2, fig. 3, the auxiliary optical barrel 10 is disposed at an upper portion of the air chamber 17 via an air chamber 17 connection flange.

As shown in fig. 2 and 3, a circular flange gasket 16 is further disposed between the auxiliary optical barrel 10 and the connecting flange of the air chamber 17, and plays roles of heat insulation, sealing and position adjustment.

As shown in figure 2, a round adjusting ball is arranged at the bottom of the air chamber 17 and is matched with an internal spherical cavity of the air chamber base 20, the installation angle can be adjusted according to the field requirement, and the round adjusting ball is fixed through four screws on the side face of the air chamber base 20. The angle of the product can be flexibly adapted to the angle change of the object to be side on the industrial site.

Specifically, as shown in fig. 2 and 3, a lens cover gasket 2 is provided between the auxiliary optical barrel 10 and the lens antifouling cover 1. The filter 13 is disposed inside the sub optical barrel 10 through the locking ring 15, the washer 14, and the washer 12. A convex mirror 27 and a convex mirror washer 28; the convex mirror gasket 28 is a special gasket adapted to the curvature of the surface of the convex mirror 27 for protecting and positioning the convex mirror 27. The bottom of the filter 13 is provided with a flat mirror washer 12, a flat mirror washer 14 and a locking ring 15. The edges of the locking ring 3, the locking ring 15, the locking ring 29, the gasket 4, the gasket 6, the gasket 12, the gasket 14 and the gasket 28 are coated with high-temperature-resistant and corrosion-resistant flexible sealing silicon rubber, so that the waterproof sealing performance of the optical system main body is ensured. And a sealing waterproof glue is coated between the optical fiber connector 24 and the square groove 7.

Wherein, the filter 14, the spectroscope 8, the convex lens 27 and the reticle 5 are all made of optical glass with high light transmittance, high temperature resistance and high finish coating.

Specifically, the auxiliary lens barrel heat insulation pad 16, the main lens barrel sealing heat insulation pad 26, the optical fiber sheath sealing pad 23, the lens barrel cover sealing ring 2 and the air chamber heat insulation pad are all silicon rubber pads, asbestos pads or polytetrafluoroethylene gaskets, and the waterproof, air leakage prevention and heat insulation effects can be achieved.

The gas source used by the gas purging anti-pollution device is pure gas such as nitrogen or industrial instrument gas after oil removal, dehumidification and dust removal, and the like, so that the cleanliness of the lens surface of the optical system is ensured, and the system is ensured to be suitable for all-time and all-weather application.

The utility model discloses a theory of operation and working process:

according to the light path structure shown in fig. 5, the infrared spectrum radiated from the surface of the measured region of the far-end high-temperature object passes through the bottom filter 14, the stray light filtered by the filter 14 passes through the infrared band required by design to reach the surface of the optical splitter 8, then is totally reflected to the central point of the convex mirror 27 by the surface of the optical splitter 8, then is converged by the convex mirror to reach the end face of the optical fiber, and finally is transmitted to the far-end by the infrared fiber to be processed. Meanwhile, the human eye accessible the utility model discloses the reticle at top is observed the testee and accessible adjusting ball fine setting angle guarantees that the testee target is in field range, reverse observation optical system and the regional alignment condition of high temperature object quilt survey.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The foregoing is illustrative and explanatory of the structure of the invention, and it is intended that those skilled in the art who have the structure described herein be able to make various modifications, additions or substitutions thereto, without departing from the scope of the invention as defined in the claims.

Claims (10)

1. The novel industrial infrared temperature measurement optical system is characterized by comprising an optical system main body and a gas purging device, wherein the optical system main body is arranged at the upper part of the gas purging device;

the optical system main body comprises an auxiliary optical lens barrel, a reticle, a light splitting lens seat assembly and a filter lens, wherein the reticle, the light splitting lens seat assembly and the filter lens are sequentially arranged in the auxiliary optical lens barrel from top to bottom; the auxiliary optical lens barrel is of a hollow structure, a lens antifouling cover is arranged at the top of the auxiliary optical lens barrel, a square groove is formed in one side of the auxiliary optical lens barrel, a main optical lens barrel is detachably mounted at the square groove corresponding to the auxiliary optical lens barrel, a main lens barrel light through hole is formed in the main optical lens barrel, a square groove is also formed in one side of the main optical lens barrel, an optical fiber connector is detachably mounted in the square groove corresponding to the main optical lens barrel, and an optical fiber sheath connector is arranged at one end, close to the optical fiber connector, of the main optical lens barrel;

spectroscope piece seat subassembly includes spectroscope piece seat, optics beam split lens, spectroscope piece board, be equipped with square inclined plane groove on the spectroscope piece seat, optics beam split lens is placed in square inclined plane inslot and is passed through beam split lens board fastening is fixed, the lower part in the spectroscope piece seat is equipped with from last to leading to the unthreaded hole of microscope base to leaning out down, the microscope base lead to the bottom of unthreaded hole with assist the inside being linked together of optical lens section of thick bamboo.

2. The novel industrial infrared temperature measurement optical system according to claim 1, wherein the gas purging device comprises a gas chamber and a connecting gas pipe, the gas chamber is of a hollow structure, the inside of the gas chamber is divided into an upper half part and a lower half part which are communicated with each other, the upper half part and the lower half part are both cylindrical, the cross-sectional diameter of the upper half part is larger than that of the lower half part, the lower end of the auxiliary optical lens barrel penetrates through the upper half part of the gas chamber and extends into the lower half part, the outer side wall of the auxiliary optical lens barrel and the side wall of the lower half part of the gas chamber form a 0.5mm annular slit, the outer side wall of the auxiliary optical lens barrel and the wall of the upper half part of the gas chamber are enclosed to form an air storage cavity, an air inlet hole is formed in the upper half part of the gas chamber, and the connecting gas pipe is communicated with the air storage cavity through the air inlet hole.

3. The novel industrial infrared temperature measurement optical system as claimed in claim 1, wherein a horizontal positioning step is provided at a middle portion of the inside of the auxiliary optical barrel for vertical positioning of the spectroscope sheet base, a screw hole is provided at a back surface of the auxiliary optical barrel, and a conical surface fastening screw passes through the screw hole from the outside of the auxiliary optical barrel to be locked by a groove and horizontally and axially positions the spectroscope sheet base.

4. The novel industrial infrared temperature measurement optical system according to claim 2, characterized in that a circular asbestos heat insulation gasket is further arranged between the auxiliary optical lens barrel and the air chamber.

5. The novel industrial infrared temperature measurement optical system as claimed in claim 2, wherein a universal adjusting ball is further arranged in the middle of the gas purging device and is locked by a gas chamber seat screw.

6. The novel industrial infrared temperature measurement optical system according to claim 1, wherein a lens cap sealing gasket is arranged between the secondary optical lens barrel and the lens antifouling cap, the reticle is arranged in the secondary optical lens barrel through a locking ring and a gasket, and the filter is mounted at the bottom of the secondary optical lens barrel through the locking ring and the gasket; the edges of the locking ring and the gasket are coated with high-temperature-resistant, corrosion-resistant and flexible sealing silicon rubber, and sealing waterproof glue is coated between the joint of the square groove of the auxiliary optical lens barrel and the main optical lens barrel and between the joint of the square groove of the optical fiber connector and the main optical lens barrel.

7. The novel industrial infrared temperature measurement optical system as claimed in claim 1, wherein a convex lens is arranged between the auxiliary optical lens barrel and the main optical lens barrel, and the convex lens is fixed by a convex lens washer and a locking ring.

8. The novel industrial infrared temperature measurement optical system as claimed in claim 7, wherein the optical filter, the optical splitting lens, the reticle and the convex lens are all made of high-transparency, high-temperature-resistant and high-finish coated optical glass, and the optical fiber sheath connector is a high-temperature-resistant and waterproof sealed interface.

9. The novel industrial infrared temperature measurement optical system as claimed in claim 5, wherein a semicircular cover plate is covered on the upper portion of the universal adjusting ball for limiting and preventing dust.

10. The novel industrial infrared temperature measurement optical system as claimed in claim 1, wherein the gas source used by the gas purging and pollution preventing device is nitrogen gas and/or industrial instrument gas after oil removal, dehumidification and dust removal.

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