CN210036967U

CN210036967U - 45-degree annular full-spectrum LED lighting device for online non-contact spectrocolorimeter

Info

Publication number: CN210036967U
Application number: CN201921131892.3U
Authority: CN
Inventors: 邬伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2020-02-07
Anticipated expiration: 2029-07-18

Abstract

The utility model discloses an online non-contact light splitting colorimeter is with full register for easy reference LED lighting device of 45 degrees annular has solved the problem that lighting device light path design is complicated among the prior art, measurement is not high. The utility model comprises a full-sealed shell, a first reflecting plate, a lens component and a second reflecting plate are sequentially arranged in the full-sealed shell from top to bottom, a light through hole is arranged at the lower part of the full-sealed shell, the second reflecting plate movably covers the light through hole, the second reflecting plate corresponds to a third reflecting plate arranged on a platform, and the first reflecting plate, the lens component and the second reflecting plate are positioned on the same central axis; and the inner wall of the fully-sealed shell is provided with LED lamps which are arranged annularly, and the LED lamps correspond to the first reflecting plate and the second reflecting plate respectively. The utility model discloses a two light path measurement system of accurate symmetrical formula carry out inside spectrum calibration, outside spectrum calibration and measurement, can effectively reduce special environmental factor on use cost and the production line and improve measurement accuracy to colour measurement result's influence.

Description

45-degree annular full-spectrum LED lighting device for online non-contact spectrocolorimeter

Technical Field

The utility model relates to an illuminator technical field among the color measuring apparatu especially indicates an online non-contact light splitting colorimeter is with full spectrum LED lighting device of 45 degrees annular.

Background

As the selection of people for the color of a product becomes one of important references, along with the high-speed development of scientific technology, the requirement of industrial products for the color is higher and higher, the color aberration of the product directly affects the quality index of the product, the too high color aberration of the product even generates a lot of waste products or defective products, great waste is caused, and serious economic loss is brought to enterprises. The unique advantages of the revolution and the on-line spectral analysis are inseparable, for example, the on-line spectral analysis can continuously measure and has high speed; the online spectrum analysis mostly adopts an annular light source illumination technology and an optical fiber transmission technology, and is suitable for occasions with severe environment; the online spectrum analyzer has a relatively simple structure, is suitable for various samples (such as liquid, coating, powder, solid and the like), and has the advantages of being valuable for performing quick quality control, optimizing operation, stabilizing production, saving energy and reducing consumption in the intermediate links of enterprise raw materials and production. The spectral colorimeter is the most basic one of the spectral analysis instruments, calculates the tristimulus values of an object by measuring the reflectivity or the transmissivity of the object, thereby calculating required various color data and obtaining the color data of various objects conveniently.

Of the four standard lighting and observation conditions for measuring reflectance chromaticity specified by the international commission on illumination (CIE), the conditions for integrating sphere lighting will not be applicable here. Generally, the spectrocolorimeter is divided into two types, one is a laboratory spectrocolorimeter, and has the advantage of high measurement precision, and an object needs to be tightly attached to a measurement window for measurement due to the adoption of a D/8-degree illumination observation condition; the other type of instrument is an online spectrocolorimeter, which has the greatest advantage that the spectral information of the article can be obtained without contacting the surface of the product. The 0/45 degree or 45/0 degree illumination and viewing conditions are more suitable for online color measurement. 45/0 degree color measurement usually selects the annular light source to irradiate on the measured object at 45 degree, the measuring method fully and uniformly illuminates the surface trace or texture of the measured object to the maximum extent, the measuring error can be reduced to the maximum extent, and the repeatability of the measuring value is very high.

On the on-line production machine, the measuring environment is complicated, need deal with the measured object high-speed motion, through the strict control instrument of mechanical means or the measured object can appear shake error from top to bottom of being difficult to exempt from to control, measured object reflection light intensity and color meter can direct influence the change of measurement number value because the factor of distance changes, this will need more homogenized illumination scheme to eliminate the error that the distance produced as far as possible to guarantee the precision of measuring.

In a patent with the application number of 201310675904.X and the patent name of 45-degree annular lighting device for an online color splitting and measuring instrument, the online color splitting and measuring instrument selects a pulse xenon lamp as a lighting source, and has the advantages that the spectrum of the pulse xenon lamp is most similar to natural light, and the flash intensity is high. The flash speed is high. However, the pulse xenon lamp is difficult to produce a pure annular light source, and an optical refraction method is needed to simulate annular illumination, so that the annular illumination of the measured object is insufficient, and the measurement error is increased due to the influence of the surface texture or the unevenness of the measured object, such as measurement when the measured object shakes or moves in parallel. And the control circuit is complex and the lamp and control circuit have short life. Pulsed xenon lamps exist due to life time. When the method is applied to online color measurement, the measurement frequency or the measurement frequency of an instrument is strictly limited, and the pulsed xenon flash lamp is characterized by a high-voltage discharge principle and needs a high-voltage energy storage and release control circuit. If the pulse xenon lamp is lighted with high frequency, the service life of the pulse xenon lamp control circuit and the pulse xenon lamp can be rapidly reduced, so that the pulse xenon lamp control circuit and the pulse xenon lamp become a natural loss product, and the use cost or the high maintenance cost of the instrument can be increased. Another problem is that the characteristics of the pulse xenon lamp make the light intensity of each lighting unable to be controlled strictly, which will almost depend on the dual optical path spectrum operation to get the correct data, if applied to the online measurement on the machine in the complex environment, the error caused by the jitter or movement of the measured object is just combined with the error of the pulse xenon lamp itself, which will inevitably generate larger measurement error.

SUMMERY OF THE UTILITY MODEL

To not enough among the above-mentioned background art, the utility model provides an online non-contact light splitting colorimeter is with full register for easy reference LED lighting device of 45 degrees annular has solved the problem that lighting device light path design is complicated among the prior art, measurement is not high.

The technical scheme of the utility model is realized like this: a45-degree annular full-spectrum LED illuminating device for an online non-contact light splitting and color measuring instrument comprises a full-sealed shell, wherein a first reflecting plate, a lens assembly and a second reflecting plate are sequentially arranged in the full-sealed shell from top to bottom; and the inner wall of the fully-sealed shell is provided with LED lamps which are arranged annularly, and the LED lamps correspond to the first reflecting plate and the second reflecting plate respectively.

The lens assembly comprises a lens barrel, the lens barrel is connected with the fully-sealed shell through a lens connecting plate, a double-faced reflector which is obliquely arranged at an angle of 45 degrees with the horizontal plane is arranged at the center of the lens barrel, a first diaphragm and a first lens are arranged at the upper part of the lens barrel, and the first lens is positioned at the lower part of the first diaphragm; the lower part of the lens barrel is provided with a second diaphragm and a second lens, and the second lens is positioned at the lower part of the second diaphragm; a monitoring branch optical fiber is arranged on the left side of the lens barrel, a sample branch optical fiber is arranged on the left side of the lens barrel, an optical path channel is arranged among the monitoring branch optical fiber, the first lens and the double-faced reflector, and an optical path channel is arranged among the sample branch optical fiber, the second lens and the double-faced reflector; ground glass is arranged below the lens barrel.

The surface of the double-sided reflector is plated with a reflecting film; black coatings are arranged on the inner wall of the lens barrel, the inner wall of the full-sealed shell and the lens connecting plate.

The inner wall of the fully-sealed shell is provided with an annular radiator, the annular radiator is provided with an LED substrate, and the LED lamp is arranged on the LED substrate.

The LED lamp light source and the normal line of the first reflecting plate are arranged at an angle of 45 degrees +/-5 degrees, and the LED lamp light source and the normal line of the second reflecting plate are arranged at an angle of 38 degrees +/-5 degrees; and black coatings are arranged on the annular radiator and the LED substrate.

The light through hole is covered with a connecting plate, the second reflecting plate is installed on the connecting plate, and the connecting plate is connected with a displacement motor arranged in the full-sealed shell through a transmission mechanism.

The transmission mechanism comprises a worm wheel and a worm, the worm wheel is arranged on an output shaft of the displacement motor, the worm is arranged on the connecting plate, and the worm wheel is matched with the worm.

The transmission mechanism comprises a big fluted disc and a small gear, the small gear is arranged on an output shaft of the displacement motor, the big fluted disc is arranged on the connecting plate, and the big fluted disc is meshed with the small gear.

And an optical fiber leading-out hole is formed in the upper part of the fully-sealed shell.

The utility model discloses a two light path measurement system of accurate symmetrical formula carry out inside spectrum calibration, outside spectrum calibration and measurement, can effectively reduce the influence of special environment factor on use cost and the production line to the colour measurement result, like the product shake, the high-speed motion of product, or high dust, high temperature, and the influence of high humidity adverse circumstances institute to colour data, the device can satisfy the even illumination in the online colour measurement and shake or the measuring error requirement that the motion arouses to the measured object, improve measurement accuracy. The utility model relates to an ingenious, the design of symmetry light path, simplify and measure the structure, keep being fixed distance with the testee during measurement, belong to non-contact measurement, 45 degree annular illumination is thrown light on whole circumference with 45 degrees to the testee, the inhomogeneity on this kind of lighting system with the testee surface is showing the reduction to the measuring result, with the distance error that the small shake of compensation testee brought, to the spectral monitoring of LED light source in the time of measuring the testee, get rid of the small spectral variation of LED flash of light self, make the measuring error minimizing, this lighting device modularized design, it is convenient to connect in traditional spectrum appearance.

Drawings

In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive work.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the optical principle of the present invention.

Fig. 3 is a schematic view of the overall structure of the present invention in embodiment 3.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

Embodiment 1, as shown in fig. 1 and 2, a 45-degree annular full-spectrum LED lighting device for an online non-contact spectrocolorimeter comprises a hermetically sealed housing 1, wherein a first reflecting plate 6, a lens assembly 23 and a second reflecting plate 13 are sequentially arranged in the hermetically sealed housing 1 from top to bottom, a light through hole 20 is formed in the lower portion of the hermetically sealed housing 1, the second reflecting plate 13 movably covers the light through hole 20, the second reflecting plate 13 is arranged in parallel with a third radiation plate 12 arranged on a platform 22, when the device is used, a sample is placed on the third reflecting plate, and the second reflecting plate 13 is moved away from the light through hole 20. First reflecting plate 6, lens subassembly 23 and second reflecting plate 13 are located same central axis, when first reflecting plate 6 and second reflecting plate 13 divide by the upper and lower position that is located lens subassembly 23, second reflecting plate 13 covers on logical unthreaded hole, play sealed totally enclosed casing this moment, first reflecting plate 6 and second reflecting plate 13 and lens subassembly 23 form the automatic calibration structure, close logical light mouth 20 promptly, when the light source dodges, gather two calibration reflecting plate light beams simultaneously, both accomplished two light path spectrum calibration after through the operation of two light path spectra. The inner wall of the fully-sealed shell 1 is provided with LED lamps 4 which are arranged annularly, and the LED lamps 4 correspond to the first reflecting plate 6 and the second reflecting plate 13 respectively; the LED lamp does not contain an ultraviolet spectrum, so that an additional ultraviolet filter is not needed, and the optical structure is further simplified. 128 full-spectrum LED lamp beads are uniformly arranged on the inner wall of the annular full-sealed shell and uniformly irradiate on the surface of a measured object in an annular mode at 45 degrees, so that the measured object is fully subjected to diffuse reflection, the measured object can still meet the test requirement even if the measured object shakes +/-3 mm through actual test, and the device meets the CIE (Commen absorption Commission) specified 45/0-degree geometric illumination observation condition. And the upper part of the totally-enclosed shell 1 is provided with an optical fiber leading-out hole 21 for leading out an optical fiber. The LED lighting device is divided into three working states, namely internal spectrum calibration, external spectrum calibration and measurement, and high-precision measurement of a sample is realized through the three states. The quasi-symmetrical double-light-path measuring system is formed by the first reflecting plate, the second reflecting plate (or the third reflecting plate) and the lens component, and is formed by the light source monitoring branch and the measuring branch which use basically identical optical structures and identical optical elements. When the optical color measuring system adopts the quasi-symmetrical double-light-path design, when the light source flashes, the light source monitoring branch and the measuring branch complete the acquisition by the same optical structure, and great advantages are brought to the subsequent spectral data processing.

Further, the lens assembly 23 includes a lens barrel 16, the lens barrel 16 is connected with the hermetically sealed housing 1 through a lens connecting plate 19, a double-sided reflecting mirror 9 obliquely arranged at an angle of 45 degrees with the horizontal plane is arranged at the center of the lens barrel 16, and a reflecting film is plated on the surface of the double-sided reflecting mirror 9 to perform double-sided reflection. The upper part of the lens barrel 16 is provided with a first diaphragm 8 and a first lens 7, and the first lens 7 is positioned at the lower part of the first diaphragm 8; the lower part of the lens barrel 16 is provided with a second diaphragm 18 and a second lens 17, and the second lens 17 is positioned at the lower part of the second diaphragm 18; the left side of the lens barrel 16 is provided with a monitoring branch optical fiber 10, the left side of the lens barrel 16 is provided with a sample branch optical fiber 11, and an optical path channel, namely a monitoring optical path channel, is arranged among the monitoring branch optical fiber 10, the first lens 7 and the double-sided reflector 9. And a light path channel, namely a sample measuring light path channel, is arranged among the sample branch optical fiber 11, the second lens 17 and the double-faced reflector 9. The monitoring branch optical fiber and the sample branch optical fiber are fixed by adopting a connector, and ground glass 2 is arranged below the lens barrel 16; black coatings are arranged on the inner wall of the lens barrel 16, the inner wall of the hermetically sealed housing 1 and the lens connecting plate 19.

When in use, the three working states of internal spectrum calibration, external spectrum calibration and measurement can be carried out. When internal spectrum calibration is carried out, the second reflecting plate covers the light through hole, the full-spectrum LED annular light source emits light with an angle of 120 degrees close to a natural light visible spectrum, the emergent light is divided into two paths, the first path of emergent light and the normal line of the first reflecting plate 6 are reflected with 45 degrees, the incident light is limited by the first diaphragm 8 and then enters the first lens 7 for focusing, the emergent light is reflected by the double-faced reflector 9 and then is collected by the light source monitoring branch optical fiber, meanwhile, the second path of emergent light is transmitted through the diffused radiation distribution of the ground glass 2, is reflected with an angle approximate to 45 degrees with the normal line of the second reflecting plate 13 and then enters the second lens 17 for focusing through the second diaphragm 18, and finally, the second path of emergent light is collected by the sample monitoring branch optical fiber after being reflected by the double-faced reflector 9, double-path spectral information is synchronously obtained, and the internal spectrum calibration of. When external calibration is carried out, a third reflecting plate 12 is placed and fixed at a parallel distance according to a distance interval of +/-5 mm set by a measured object, the second reflecting plate is moved away from a light through hole, a light through opening 20 is opened, then a full-spectrum LED annular light source emits light with an angle of 120 degrees close to a natural light visible spectrum, the emergent light is divided into two paths, wherein after being reflected with the normal line of a first reflecting plate 6 at 45 degrees, the emergent light in the first path is limited by a first diaphragm 8, enters a first lens 7 for focusing, is finally reflected by a double-faced reflector 9, is collected by a light source monitoring branch optical fiber, and after being reflected with an angle of 45 degrees approximate to the normal line of the third reflecting plate 12, the emergent light in the second path enters a second lens 17 for focusing through a second diaphragm 18 after being reflected by the double-faced reflector 9, is collected by a sample monitoring branch optical fiber, and after being collected by the spectrums of the third reflecting plate 12, the second reflecting plate 13 and the first reflecting plate 6, and then the spectrum calibration of the measured distance is completed by a spectrum calibration algorithm. During long-time measurement, the measured spectrum is inevitably changed under the influence of the spectrometer and various factors and the change of the environmental humidity and temperature, so that the corresponding relation between the spectrum of the sample branch and the spectrum of the light source monitoring branch needs to be calibrated again, the automatic internal spectrum calibration interval can be set according to the target environment, and the real-time dual-optical-path spectrum calibration is completed after the spectrum operation.

Embodiment 2, a 45 degree annular full-spectrum LED lighting device for online non-contact spectrocolorimeter, be equipped with annular radiator 5 on the inner wall of totally enclosed casing 1, annular radiator 5 adopts aluminium pig processing to form, is equipped with LED substrate 3 on annular radiator 5, and LED lamp 4 sets up on LED substrate 3, and LED lamp 4 adopts korean SEOUL (SEOUL) Sunlike full-spectrum natural light lamp pearl. 128 full-spectrum LED lamp beads are uniformly arranged on the LED substrate 3 and uniformly irradiate on the surface of a measured object in a 45-degree annular mode, so that the measured object is fully subjected to diffuse reflection. 4 light sources of LED lamp and 6 normals of first reflecting plate become 45 +/-5 settings, and 4 light sources of LED lamp and 13 normals of second reflecting plate become 38 +/-5 settings, and the light source of being convenient for reflects better on first reflecting plate and second reflecting plate, and LED lamp 4 throws light on the measured object with 45 degrees on whole circumference, and this kind of illumination mode is showing the reduction to the result of measurement with the inhomogeneity on measured object surface, all be equipped with the black coating on annular radiator 5 and the LED base plate 3, reduce the loss in the light transmission process.

Further, the light through hole 20 is covered with a connecting plate 15, the second reflecting plate 13 is installed on the connecting plate 15, and the connecting plate 15 is connected with a displacement motor 14 arranged inside the fully-sealed shell 1 through a transmission mechanism, so that the second reflecting plate is movably covered on the through hole. The transmission mechanism comprises a worm wheel 24 and a worm 25, the worm wheel 24 is arranged on an output shaft of the displacement motor 14, the worm 25 is arranged on the connecting plate 15, and the worm wheel 24 is matched with the worm 25. The displacement motor 14 is connected with the background controller, the displacement motor rotates to drive the worm wheel to rotate, the worm wheel drives the worm to move left and right, and then the connecting plate drives the second reflecting plate to move left and right, so that the light-through opening is opened and closed. The opening and closing of the light through port has the following two functions: firstly, reduce the pollution of external environment to optical system when closing logical light mouth 20, secondly the second reflecting plate is in the calibration position when closing logical light mouth, can calibrate at any time. The second reflecting plate is arranged above the connecting plate, the automatic calibration can drive the displacement motor to drive the connecting plate to move to the position where the second reflecting plate and the light through port 20 are on the same central axis, the light through port 20 is closed, two light beams of the calibration reflecting plate are collected simultaneously when the light source flashes, the calibration of the dual-light-path spectrum is completed after the dual-light-path spectrum operation, and the measurement precision is improved.

The other structure is the same as embodiment 1.

Embodiment 3, as shown in fig. 3, a 45-degree annular full-spectrum LED lighting device for an online non-contact spectrocolorimeter, the transmission mechanism includes a large toothed disc 24a and a small gear 25a, the small gear 25a is disposed on an output shaft of a displacement motor 14, the large toothed disc 24a is fixed on a connecting plate 15, a lower portion of the large toothed disc 24a is rotatably connected with a fully-sealed housing through a rotating shaft, so as to facilitate swinging of the connecting plate, and the large toothed disc 24a is engaged with the small gear 25 a. Namely, the displacement motor drives the big fluted disc to rotate through the pinion, and the connecting plate swings back and forth on the big fluted disc to realize the opening and closing of the light-passing port; for an online color measuring instrument, a 45-degree annular full-spectrum LED lighting device for an online non-contact spectrocolorimeter is installed. The flexibility of a measurement period is obviously improved, if the color measurement instrument is applied to a good environment, after the light through port is opened during measurement, the full-spectrum LED annular light source can be repeatedly lightened by using the frequency of more than 0.5 second without affecting the temperature of the device, and the light through port is closed after the measurement is finished.

The other structure is the same as embodiment 2.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an online non-contact beam split colorimeter is with full spectrum LED lighting device of 45 degrees annular which characterized in that: the light source comprises a full-sealed shell (1), wherein a first reflecting plate (6), a lens assembly (23) and a second reflecting plate (13) are sequentially arranged in the full-sealed shell (1) from top to bottom, a light through hole (20) is formed in the lower portion of the full-sealed shell (1), the second reflecting plate (13) movably covers the light through hole (20), the second reflecting plate (13) corresponds to a third radiating plate (12) arranged on a platform (22), and the first reflecting plate (6), the lens assembly (23) and the second reflecting plate (13) are located on the same central axis; the LED lamp is characterized in that the inner wall of the full-sealed shell (1) is provided with an LED lamp (4) which is arranged in an annular mode, and the LED lamp (4) corresponds to the first reflecting plate (6) and the second reflecting plate (13) respectively.

2. The on-line non-contact spectrocolorimeter 45-degree annular full-spectrum LED illuminating device according to claim 1, wherein: the lens assembly (23) comprises a lens barrel (16), the lens barrel (16) is connected with the fully-sealed shell (1) through a lens connecting plate (19), a double-faced reflector (9) which is obliquely arranged at an angle of 45 degrees with the horizontal plane is arranged at the center of the lens barrel (16), a first diaphragm (8) and a first lens (7) are arranged at the upper part of the lens barrel (16), and the first lens (7) is positioned at the lower part of the first diaphragm (8); a second diaphragm (18) and a second lens (17) are arranged at the lower part of the lens barrel (16), and the second lens (17) is positioned at the lower part of the second diaphragm (18); a monitoring branch optical fiber (10) is arranged on the left side of the lens barrel (16), a sample branch optical fiber (11) is arranged on the left side of the lens barrel (16), an optical path channel is arranged among the monitoring branch optical fiber (10), the first lens (7) and the double-faced reflector (9), and an optical path channel is arranged among the sample branch optical fiber (11), the second lens (17) and the double-faced reflector (9); a ground glass (2) is arranged below the lens barrel (16).

3. The on-line non-contact spectrocolorimeter 45-degree annular full-spectrum LED illuminating device according to claim 2, wherein: the surface of the double-sided reflector (9) is plated with a reflecting film; black coatings are arranged on the inner wall of the lens barrel (16), the inner wall of the fully-sealed shell (1) and the lens connecting plate (19).

4. The on-line non-contact spectrocolorimeter 45-degree annular full-spectrum LED illuminating device according to claim 1, 2 or 3, wherein: the LED lamp is characterized in that an annular radiator (5) is arranged on the inner wall of the fully-sealed shell (1), an LED substrate (3) is arranged on the annular radiator (5), and an LED lamp (4) is arranged on the LED substrate (3).

5. The on-line non-contact spectrocolorimeter 45-degree annular full-spectrum LED illuminating device according to claim 4, wherein: the light source of the LED lamp (4) and the normal line of the first reflecting plate (6) form an angle of 45 degrees +/-5 degrees, and the light source of the LED lamp (4) and the normal line of the second reflecting plate (13) form an angle of 38 degrees +/-5 degrees; and black coatings are arranged on the annular radiator (5) and the LED substrate (3).

6. The 45-degree annular full-spectrum LED lighting device for the online non-contact spectrocolorimeter according to claim 1 or 5, wherein: the light through hole (20) is covered with a connecting plate (15), the second reflecting plate (13) is installed on the connecting plate (15), and the connecting plate (15) is connected with a displacement motor (14) arranged inside the full-sealed shell (1) through a transmission mechanism.

7. The on-line non-contact spectrocolorimeter 45-degree annular full-spectrum LED illuminating device according to claim 6, wherein: the transmission mechanism comprises a worm wheel (24) and a worm (25), the worm wheel (24) is arranged on an output shaft of the displacement motor (14), the worm (25) is arranged on the connecting plate (15), and the worm wheel (24) is matched with the worm (25).

8. The on-line non-contact spectrocolorimeter 45-degree annular full-spectrum LED illuminating device according to claim 6, wherein: the transmission mechanism comprises a big gear disc (24 a) and a small gear (25 a), the small gear (25 a) is arranged on an output shaft of the displacement motor (14), the big gear disc (24 a) is arranged on the connecting plate (15), and the big gear disc (24 a) is meshed with the small gear (25 a).

9. The on-line non-contact spectrocolorimeter 45-degree annular full-spectrum LED illuminating device according to claim 1, 7 or 8, wherein: and an optical fiber leading-out hole (21) is formed in the upper part of the fully-sealed shell (1).