Fabric fiber tester for on-site quick testing

Abstract

A fabric fiber tester for on-site quick testing, comprising a tester body (1), a positioning cover (30), and an operation handle (14). The tester body (1) consists of a lithium battery (2), a movable mirror (6), a beam splitter (8), a movable mirror mechanism (9), an insertion mirror (10), an insertion mechanism (11), a main controller (12), an infrared light source (13), a stationary mirror (17), a total reflection mirror (18), an infrared area array (19), a cartridge-type microscopic image lens (20), a holed reflective mirror A (24), a holed reflective mirror B (25), and a cartridge-type microscopic objective lens (31). The fabric fiber tester has two operating modes, i.e., a Fourier transform spectroscopy detection mode and a broadband infrared reflection microscopic imaging mode, both of which share the infrared light source (13), the infrared area array (19) and a cartridge-type microscopic objective and image system. While satisfying certain size requirements, the fabric fiber tester enables accurate infrared spectrum analysis and broadband infrared imaging to be carried out simultaneously, thus realizing pattern recognition and composition analysis of fabric fibers by means of information fusion.

Description

A fabric fiber detector for on-site rapid testing Technical Field

[0001] The present invention relates to the technical field of textile testing instruments, and in particular to a textile fiber testing instrument capable of realizing on-site rapid testing. Background Art

[0002] Fabrics come in a wide variety of types, including cotton, linen, wool / viscose, silk, viscose, and down. Fabric fiber testing is a key quality assessment indicator for textile inspection and a key component of clothing labeling. Testing for fabric fiber composition involves both qualitative and quantitative analysis, with the traditional method of qualitative analysis followed by quantitative analysis.

[0003] Qualitative analysis is to determine the type of fiber contained in the sample, usually referring to the fiber composition; quantitative analysis is to determine the amount of fiber contained, usually referring to the fiber content.

[0004] Currently, qualitative testing methods for textile fibers include microscopic observation, combustion, chemical dissolution, drug staining, melting point testing, and infrared absorption spectroscopy. However, these methods all have limitations. Microscopic observation and combustion can only distinguish natural or synthetic fibers. While chemical dissolution can identify blended products, the organic solvents used are harmful to the health of testers and pollute the environment. Infrared absorption spectroscopy requires very high test temperature, complex sample preparation, and long testing cycles, making it inadequate for rapid testing. Quantitative testing, however, places high demands on reagent concentration, test temperature, reaction time, equipment performance, and operator experience. Consequently, fiber composition testing is a complex process, and the results are subject to significant uncertainty.

[0005] Near-infrared spectroscopy (NIRS) is primarily used for non-destructive measurement of electromagnetic waves in the 800nm ​​to 2500nm range. Unlike mass spectrometry and chromatography, this technique requires no purification and has been widely used in the food, agriculture, pharmaceuticals, oil refining, and chemical industries. Qualitative analysis using NIRS involves establishing a NIRS identification model based on samples of known classes, then examining whether unknown samples belong to that class. It is primarily used for cluster analysis and discriminant analysis.

[0006] The existing technology lacks the ability to simultaneously acquire high-resolution infrared spectra and wide-spectrum infrared images to detect the texture of fabric fibers, such as the coarse weave and interweaving pattern, as well as joint detection technology for component analysis and pattern recognition. It is impossible to perform fine infrared spectral analysis of specific small areas, and it is impossible to perform joint detection of the interweaving pattern of the detection object within the field of view. Summary of the Invention

[0007] The purpose of the present invention is to provide a fabric fiber detector that can realize on-site rapid detection in order to solve the problems in the prior art.

[0008] To this end, the above-mentioned purpose of the present invention is achieved through the following technical solutions:

[0009] A textile fiber detector for realizing on-site rapid detection, characterized in that: it comprises a detector body, wherein the detector body is provided with a Fourier infrared spectrum detection optical path and an infrared microscopic imaging optical path,

[0010] The Fourier infrared spectrum detection optical path includes an infrared light source, a beam splitter, a moving mirror, a static mirror, a hole-bearing reflector B, a hole-bearing reflector A, a cassette microscope objective lens, a cassette microscope image lens and an infrared surface array. The orthogonal optical axis is perpendicular to the infrared optical axis, the beam splitter is placed at an angle of 45 degrees to the orthogonal optical axis, and the moving mirror mechanism controls the moving mirror to translate along the orthogonal optical axis.

[0011] The infrared microscopic imaging optical path and the Fourier infrared spectrum detection optical path multiplex an infrared light source, a hole-bearing reflector B, a hole-bearing reflector A, a card-type microscope objective lens, a card-type microscope image lens and an infrared surface array.

[0012] There are also cutting-in mirrors and total reflection mirrors. The cutting-in mechanism controls the cutting-in mirror to cut into or out of the infrared optical axis. When the cutting-in mirror cuts into the infrared optical axis, the infrared microscopy optical path works. When the cutting-in mirror cuts out of the infrared optical axis, the Fourier infrared spectrum detection optical path works.

[0013] While adopting the above technical solutions, the present invention may also adopt or combine the following technical solutions:

[0014] As a preferred technical solution of the present invention: a controller is provided, which controls the turning on of the infrared light source, and controls the infrared array, specifies its working mode and receives its data.

[0015] As a preferred technical solution of the present invention: in the Fourier transform infrared spectroscopy detection optical path, the infrared light emitted by the infrared light source along the infrared optical axis is divided into two paths by the beam splitter: one path is reflected by the beam splitter and then emitted along the orthogonal optical axis to the moving mirror, reflected back by the moving mirror, and then passes through the beam splitter; the other path passes through the beam splitter, emitted along the infrared optical axis to the static mirror, reflected back by the static mirror, and then reflected by the beam splitter;

[0016] The moving mirror and the static mirror are at different distances from the center of the beam splitter, resulting in an optical path difference. The two infrared lights are coherent lights, and after merging, they form an equi-inclined interference ring distribution. During the translational scanning process of the moving mirror along the orthogonal optical axis, the center of the interference ring corresponds to the central main maximum infrared light intensity distribution of different wavelengths. After passing through the central hole of the perforated reflector B, only the central main maximum infrared light passes through, and then after being reflected by the perforated reflector A, it turns to the main optical axis perpendicular to the orthogonal optical axis, and then is focused to the fabric fiber sample on the focal plane through the cassette microscope objective. A part of the main maximum infrared light corresponding to a specific wavelength reflected by the fabric fiber sample is turned back along the main optical axis, passed through the cassette microscope objective, passed through the central hole of the perforated reflector A, and then focused onto the infrared array through the cassette microscope image lens;

[0017] The infrared array starts the integration mode under the control of the main controller, accumulates the intensity values ​​of all pixels, and records the accumulated intensity values.

[0018] As a preferred technical solution of the present invention: in the infrared microscopic imaging optical path, the wide-spectrum infrared light emitted by the infrared light source along the infrared optical axis is reflected by the cutting mirror and turned to the cutting optical axis perpendicular to the infrared optical axis, and then reflected by the total reflection mirror to turn to the turning optical axis parallel to the infrared optical axis, and after being reflected by the perforated reflector B and the perforated reflector A, it is turned to the main optical axis perpendicular to the orthogonal optical axis, and then is focused to the fabric fiber sample on the focal plane by the cassette microscope objective lens. The wide-spectrum infrared light reflected by the fabric fiber sample is returned along the main optical axis, passes through the cassette microscope objective lens, passes through the central hole of the perforated reflector A, and is then focused and imaged onto the infrared surface array by the cassette microscope. The infrared surface array starts the imaging mode under the control of the main controller and records the wide-spectrum infrared image for subsequent analysis.

[0019] As a preferred technical solution of the present invention: the card microscope contains an imaging secondary mirror and an imaging primary mirror, the card microscope objective contains an object side primary mirror and an object side secondary mirror, the card microscope and the card microscope objective are both designed for infinite imaging, and are coaxially symmetrically placed conjugately on the main optical axis. The card microscope objective first reflects the light emitted by the textile fiber sample on its focal plane successively by the object side primary mirror and the object side secondary mirror, and turns it into parallel light with a certain magnification, and then reflects it through the imaging secondary mirror and the imaging primary mirror of the card microscope, and the parallel light is reduced according to the magnification of the card microscope and focused to form an image onto the infrared surface array on the focal plane.

[0020] As a preferred technical solution of the present invention: the surfaces of the imaging secondary mirror, the imaging primary mirror, the object side primary mirror, the object side secondary mirror, the moving mirror, the static mirror, the cutting mirror, the perforated reflector B, and the perforated reflector A are all coated with an infrared high-reflection film, which efficiently reflects infrared light within the emission range of the infrared light source.

[0021] As a preferred technical solution of the present invention: different magnification ratios of the card microscope image lens and the card microscope objective lens are used to obtain different image-to-object magnification ratios on the infrared array.

[0022] As a preferred technical solution of the present invention: the beam splitter is formed by laminating two identical thin pieces of infrared high-transmittance optical glass, the laminating surface is coated with an infrared semi-reflective and semi-transparent film, and is placed at an angle of 45 degrees to the orthogonal optical axis.

[0023] As a preferred technical solution of the present invention: the detector body uses a lithium battery as a driving power source.

[0024] As a preferred technical solution of the present invention: the detector body is equipped with an operating handle for the operator to carry it.

[0025] As a preferred technical solution of the present invention: the detector body is equipped with a positioning cover, the size of which enables the fabric fiber sample to be located at the focal plane of the cassette microscope objective lens.

[0026] The present invention has the following beneficial effects: a fabric fiber detector for realizing on-site rapid detection of the present invention utilizes a Fourier infrared spectrum detection optical path, an infrared microscopic imaging optical path, a multiplexed infrared light source, a hole-carrying reflector B, a hole-carrying reflector A, a cassette microscope objective lens, a cassette microscope image lens and an infrared surface array; in one detector, an entry mechanism controls the entry mirror to cut in or out of the infrared optical axis, thereby realizing switching between the infrared microscopic imaging optical path and the Fourier infrared spectrum detection optical path, obtaining high-resolution infrared spectra and wide-spectrum infrared images of completely overlapping detection targets, realizing texture detection of coarse weaving, interweaving methods, etc. at the same position of fabric fibers, as well as comprehensive detection of fiber composition analysis and pattern recognition.

[0027] The fabric fiber detector of the present invention, which realizes on-site rapid detection, utilizes the multiplexing structure of the Fourier infrared spectroscopy detection optical path and the infrared microscopy imaging optical path, providing a method for preparing a more compact and miniaturized fabric fiber detector. By providing a positioning cover and the size of the positioning cover, the part to be tested can be quickly placed on the focal plane of the card-type microscope objective lens, so that the fabric can be detected more quickly. Therefore, the present invention provides a compact and miniaturized fabric detector capable of rapid detection.

[0028] The present invention provides a fabric fiber detector for rapid on-site testing, adopts two working modes, and simultaneously performs precise infrared spectrum analysis and infrared wide-spectrum imaging. It performs pattern recognition and component analysis of fabric fibers through information fusion, and has great application prospects in the field of on-site fabric fiber testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG1 is a schematic structural diagram of a fabric fiber detector for realizing on-site rapid detection according to the present invention;

[0030] In the accompanying drawings, the detector body 1; lithium battery 2; charging port 3; switch 4; power supply line 5; moving mirror 6; orthogonal optical axis 7; beam splitter 8; moving mirror mechanism 9; cutting mirror 10; cutting mechanism 11; main controller 12; infrared light source 13; operating handle 14; infrared optical axis 15; cutting optical axis 16; static mirror 17; total reflector 18; infrared surface array 19; cassette microscope 20; imaging secondary mirror 21; imaging primary mirror 22; turning optical axis 23; perforated reflector A 24; perforated reflector B 25; object side primary mirror 26; main optical axis 27; object side secondary mirror 28; textile fiber sample 29; positioning cover 30; cassette microscope objective lens 31. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Example 1

[0032] As shown in Figure 1, a textile fiber detector for realizing on-site rapid inspection of the present invention includes a detector body 1, including a lithium battery 2, a moving mirror 6, a beam splitter 8, a moving mirror mechanism 9, an entry mirror 10, an entry mechanism 11, a main controller 12, an infrared light source 13, a static mirror 17, a total reflective mirror 18, an infrared surface array 19, a cassette microscope 20, a perforated reflector A 24, a perforated reflector B 25 and a cassette microscope objective lens 31.

[0033] The card microscope 20 contains an imaging secondary mirror 21 and an imaging primary mirror 22. The card microscope objective lens 31 contains an object side primary mirror 26 and an object side secondary mirror 28. Both the card microscope 20 and the card microscope objective lens 31 are designed for infinite imaging and are placed coaxially symmetrically and conjugately on the main optical axis 27. The card microscope objective lens 31 first reflects the light emitted by the textile fiber sample 29 on its focal plane from the object side primary mirror 26 and the object side secondary mirror 28 in succession, and then turns it into parallel light with a certain magnification (the magnification of the card microscope objective lens 31, which is 20 in this embodiment). The parallel light is then reflected by the imaging secondary mirror 21 and the imaging primary mirror 22 of the card microscope 20, and the parallel light is reduced and focused according to the magnification of the card microscope 20 to form an image on the infrared array 19 on the focal plane. The magnification in this embodiment is 5. Different magnification ratios of the card microscope image lens 20 and the card microscope objective lens 31 can be selected to obtain different image-object magnification ratios on the infrared array 19. In this embodiment, the magnification ratio is 4.

[0034] The moving mirror mechanism 9 can control the moving mirror 6 to translate along the orthogonal optical axis 7. The cutting mechanism 11 can control the cutting mirror 10 to cut into or out of the infrared optical axis 15.

[0035] The infrared light source 13 can emit a wide spectrum of infrared light within a certain range, which in this embodiment is 1000 cm -1 -3300cm -1The corresponding infrared surface array 19 can sense infrared light within this range and form an image. The surfaces of the imaging secondary mirror 21, imaging primary mirror 22, object primary mirror 26, object secondary mirror 28, moving mirror 6, static mirror 17, cutting mirror 10, perforated reflector B 25, and perforated reflector A 24 are all coated with infrared high-reflection film, which can efficiently reflect infrared light within the emission range of the infrared light source 13.

[0036] The Fourier transform infrared spectroscopy detection optical path consists of an infrared light source 13, a beam splitter 8, a moving mirror 6, a static mirror 17, a perforated reflector B 25, a perforated reflector A 24, a cassette microscope objective 31, a cassette microscope image lens 20, and an infrared surface array 19. The orthogonal optical axis 7 is perpendicular to the infrared optical axis 15. The beam splitter 8 is formed by laminating two identical thin pieces of infrared high-transmittance optical glass, with the laminating surface coated with an infrared semi-reflective and semi-transmissive film. It is positioned at a 45-degree angle to the orthogonal optical axis 7. In the Fourier transform infrared spectroscopy detection mode, infrared light emitted by the infrared light source 13 along the infrared optical axis 15 is split into two paths by the beam splitter 8: one path is reflected by the beam splitter 8, then emitted along the orthogonal optical axis 7 toward the moving mirror 6, where it is reflected back by the moving mirror 6 and then passes through the beam splitter 8; the other path passes through the beam splitter 8, emitted along the infrared optical axis 15 toward the static mirror 17, where it is reflected back by the static mirror 17 and then reflected by the beam splitter 8. The moving mirror 6 and the static mirror 17 have different center distances to the beam splitter 8, resulting in an optical path difference. Therefore, the two infrared lights are coherent lights, and after merging, they form an equi-inclined interference ring distribution. When the moving mirror 6 is translated or scanned along the orthogonal optical axis 7, the center of the interference ring corresponds to the central main maximum infrared light intensity distribution of different wavelengths. At a certain detection moment, it is a certain wavelength value. After passing through the central hole of the perforated reflector B 25, only the central main maximum infrared light passes through, and then after being reflected by the perforated reflector A 24, it turns to the main optical axis 27 perpendicular to the orthogonal optical axis 7, and then is focused to the fabric fiber sample 29 on the focal plane through the cassette microscope objective lens 31. A part of the main maximum infrared light corresponding to a certain wavelength reflected by the fabric fiber sample 29 is turned back along the main optical axis 27, passed through the cassette microscope objective lens 31, passed through the central hole of the perforated reflector A 24, and then focused onto the infrared array 19 through the cassette microscope image lens 20. The infrared array 19 starts the integration mode under the control of the main controller 12, that is, accumulates the intensity values ​​of all pixels, which is equivalent to a unit detector, and records the accumulated intensity value.

[0037] The infrared microscopic imaging optical path and the Fourier transform infrared spectroscopy detection optical path reuse an infrared light source 13, a perforated reflector B 25, a perforated reflector A 24, a cassette microscope objective 31, a cassette microscope imager 20, and an infrared array 19. Furthermore, the optical path includes a cutting mirror 10 and a total reflector 18. When the cutting mirror 10, under the control of the cutting mechanism 11, cuts into the infrared optical axis 15, the infrared microscopic imaging optical path operates; conversely, when the cutting mirror 10, under the control of the cutting mechanism 11, cuts out of the infrared optical axis 15, the Fourier transform infrared spectroscopy detection optical path operates. In infrared microscopy imaging mode, the infrared light source 13 emits broad-spectrum infrared light along the infrared optical axis 15. This light is reflected by the entry mirror 10 and directed toward the entry optical axis 16, which is perpendicular to the infrared optical axis 15. It is then reflected by the total reflector 18 and directed toward the turning optical axis 23, which is parallel to the infrared optical axis 15. After being reflected by the apertured reflector B 25 and the apertured reflector A 24, it is directed toward the main optical axis 27, which is perpendicular to the orthogonal optical axis 7. The broad-spectrum infrared light is then focused by the cassette microscope objective 31 onto the fabric fiber sample 29 on the focal plane. The broad-spectrum infrared light reflected by the fabric fiber sample 29 is then reflected back along the main optical axis 27, passed through the cassette microscope objective 31, and passed through the center hole of the apertured reflector A 24. It is then focused by the cassette microscope imager 20 and imaged onto the infrared array 19. Under the control of the main controller 12, the infrared array 19 activates the imaging mode and records the broad-spectrum infrared image for subsequent analysis.

[0038] The lithium battery 2 has a charging port 3 and a switch 4. A battery charger can charge the lithium battery 2 through the charging port 3. When the switch 4 is turned on, the lithium battery 2 supplies power to the moving mirror mechanism 9, the cutting mechanism 11, the main controller 12, the infrared light source 13, and the infrared array 19 via the power supply line 5.

[0039] During on-site inspection, the operator lifts the operating handle 14 to make the positioning cover 30 close to the fabric fiber sample 29. The size of the positioning cover 30 can make the fabric fiber sample 29 be on the focal plane of the cassette microscope objective lens 31, which is convenient for on-site quick inspection.

[0040] The controller 12 is used to activate the infrared light source 13 and control the infrared array 19, specifying its operating mode and receiving its data. The controller 12 is also used to issue instructions to the moving mirror mechanism 9 and the cutting mechanism 11, thereby controlling the scanning step size and starting and ending positions of the moving mirror 6 along the orthogonal optical axis 7, and controlling the cutting mirror 10 to cut into and out of the infrared optical axis 15.

[0041] The present invention provides a textile fiber detector for realizing on-site rapid inspection, comprising a detector body, a positioning cover, and an operating handle. The detector body is composed of a lithium battery, a moving mirror, a beam splitter, a moving mirror mechanism, an incision mirror, an incision mechanism, a main controller, an infrared light source, a static mirror, a total reflection mirror, an infrared surface array, a cassette microscope, a perforated reflector A, a perforated reflector B, and a cassette microscope objective lens. The present invention provides a textile fiber detector for realizing on-site rapid inspection, adopting two working modes, namely a Fourier transform spectrum detection mode and a wide-spectrum infrared reflective microscopy imaging mode, and multiplexing the infrared light source, infrared surface array, and cassette microscope objective lens. While meeting certain volume requirements, precise infrared spectral analysis and infrared wide-spectrum imaging can be performed simultaneously, and pattern recognition and component analysis of textile fibers can be performed through information fusion to meet market regulatory needs.

[0042] The above-mentioned specific implementation methods are used to illustrate the present invention and are only preferred embodiments of the present invention, rather than limiting the present invention. Any modifications, equivalent substitutions, improvements, etc. made to the present invention within the spirit of the present invention and the scope of protection of the claims shall fall within the scope of protection of the present invention.

Claims

1. A fabric fiber detector for realizing on-site rapid detection, characterized in that: The detector comprises a detector body, wherein the detector body is provided with a Fourier infrared spectrum detection optical path and an infrared microscopic imaging optical path. The Fourier infrared spectrum detection optical path includes an infrared light source, a beam splitter, a moving mirror, a static mirror, a perforated reflector B, a perforated reflector A, a cassette microscope objective, a cassette microscope image lens and an infrared surface array. The orthogonal optical axis is perpendicular to the infrared optical axis, the beam splitter is placed at an angle of 45 degrees to the orthogonal optical axis, and the moving mirror mechanism controls the moving mirror to translate along the orthogonal optical axis. The infrared microscopic imaging optical path and the Fourier infrared spectrum detection optical path multiplex an infrared light source, a reflector B with a hole, a reflector A with a hole, a cassette microscope objective lens, a cassette microscope image lens and an infrared surface array. A cutting-in mirror and a total reflecting mirror are also provided. The cutting-in mechanism controls the cutting-in mirror to cut in or out of the infrared optical axis. When the cutting-in mirror cuts in the infrared optical axis, the infrared microscopic imaging optical path works. When the cutting-in mirror cuts out of the infrared optical axis, the Fourier infrared spectrum detection optical path works.

2. The textile fiber detector for realizing on-site rapid detection according to claim 1, characterized in that: A controller is provided, which controls the infrared light source to be turned on, and controls the infrared array, specifies its working mode and receives its data.

3. The textile fiber detector for realizing on-site rapid detection according to claim 1, characterized in that: In the Fourier infrared spectrum detection optical path, the infrared light emitted by the infrared light source along the infrared optical axis is divided into two paths by the beam splitter: one path is reflected by the beam splitter and then emitted to the moving mirror along the orthogonal optical axis, reflected by the moving mirror and then passed through the beam splitter; the other path passes through the beam splitter, emitted to the static mirror along the infrared optical axis, reflected by the static mirror and then reflected by the beam splitter; The moving mirror and the static mirror have different center distances to the beam splitter, resulting in an optical path difference. The two infrared lights are coherent lights, and after merging, they form an equi-inclined interference ring distribution. When the moving mirror is moving and scanning along the orthogonal optical axis, the center of the interference ring corresponds to the central main maximum infrared light intensity distribution of different wavelengths. After passing through the central hole of the perforated reflector B, only the central main maximum infrared light passes through, and then after being reflected by the perforated reflector A, it turns to the main optical axis perpendicular to the orthogonal optical axis, and then is focused to the fabric fiber sample on the focal plane through the cassette microscope objective. A part of the main maximum infrared light corresponding to a specific wavelength reflected by the fabric fiber sample is folded back along the main optical axis, passes through the cassette microscope objective, passes through the central hole of the perforated reflector A, and then is focused to the infrared surface array through the cassette microscope image lens; The infrared array starts the integration mode under the control of the main controller, accumulates the intensity values ​​of all pixels, and records the accumulated intensity values.

4. The textile fiber detector for realizing on-site rapid detection according to claim 1, characterized in that: In the infrared microscope imaging optical path, the wide-spectrum infrared light emitted by the infrared light source along the infrared optical axis is reflected by the cutting-in mirror, turned to the cutting-in optical axis perpendicular to the infrared optical axis, and then reflected by the total reflection mirror to turn to the turning optical axis parallel to the infrared optical axis. After being reflected by the perforated reflector B and the perforated reflector A, it is turned to the main optical axis perpendicular to the orthogonal optical axis, and then focused to the fabric fiber sample on the focal plane by the cassette microscope objective. The wide-spectrum infrared light reflected by the fabric fiber sample is turned back along the main optical axis, passed through the cassette microscope objective, passed through the central hole of the perforated reflector A, and then focused and imaged onto the infrared surface array by the cassette microscope image lens. The infrared surface array starts the imaging mode under the control of the main controller and records the wide-spectrum infrared image for subsequent analysis.

5. The textile fiber detector for realizing on-site rapid detection according to claim 1, characterized in that: The cassette microscope image lens contains an imaging secondary mirror and an imaging primary mirror, and the cassette microscope objective lens contains an object side primary mirror and an object side secondary mirror. Both the cassette microscope image lens and the cassette microscope objective lens are designed for infinite imaging and are coaxially symmetrically placed conjugately on the main optical axis. The cassette microscope objective lens first reflects the light emitted by the textile fiber sample on its focal plane through the object side primary mirror and the object side secondary mirror in turn, and turns it into parallel light with a certain magnification, and then reflects it through the imaging secondary mirror and the imaging primary mirror of the cassette microscope image lens, and reduces the parallel light according to the magnification of the cassette microscope image lens and focuses it to form an infrared surface array on the focal plane.

6. The textile fiber detector for realizing on-site rapid detection according to claim 5, characterized in that: The surfaces of the imaging secondary mirror, imaging primary mirror, object side primary mirror, object side secondary mirror, moving mirror, static mirror, cutting-in mirror, perforated reflector B and perforated reflector A are all coated with infrared high-reflection film, which efficiently reflects infrared light within the emission range of the infrared light source.

7. The textile fiber detector for realizing on-site rapid detection according to claim 1, characterized in that: Different magnification ratios of cassette microscope image lenses and cassette microscope objective lenses are used to obtain different image-object magnification ratios on the infrared array.

8. The textile fiber detector for realizing on-site rapid detection according to claim 1, characterized in that: The beam splitter is made of two identical thin pieces of infrared high-transmittance optical glass bonded together. The bonding surface is coated with an infrared semi-reflective and semi-transparent film and is placed at an angle of 45 degrees to the orthogonal optical axis.

9. The textile fiber detector for realizing on-site rapid detection according to claim 1, characterized in that: The detector body uses lithium battery as the driving power source; The detector body is equipped with an operating handle for the operator to carry.

10. The textile fiber detector for realizing on-site rapid detection according to claim 1, characterized in that: The detector body is equipped with a positioning cover, and the size of the positioning cover makes the fabric fiber sample be located at the focal plane of the cassette microscope objective lens.

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