CN115290189B

CN115290189B - Can enlarge hand-held type spectrum appearance of measuring range

Info

Publication number: CN115290189B
Application number: CN202211224436.XA
Authority: CN
Inventors: 郭伟; 陆君慧; 赵纯刚
Original assignee: Vela Optoelectronics Suzhou Co ltd
Current assignee: Vela Optoelectronics Suzhou Co ltd
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2022-12-02
Anticipated expiration: 2042-10-09
Also published as: CN115290189A

Abstract

The application provides a can enlarge measurement range's hand-held type spectrum appearance relates to spectrum appearance technical field, including spectrum appearance casing, fixed connection in the display screen of spectrum appearance casing rear end, fixed connection in the incident slit of spectrum appearance casing front end and the detection unit of fixed connection spectrum appearance shells inner wall, still include: and the dispersion unit is connected to the inner wall of the spectrometer shell and used for decomposing and diffracting the incident light. This application passes through refraction lens, push rod and driver part's setting, the drive wheel dish rotates the horizontal adjustment who realizes sliding part, and then adjust refraction lens's inclination, change incident angle with this, realize obtaining different diffraction wavelength scope at the same diffraction angle scope, and then adjust measuring range, the drive wheel dish is still accessible electricity connection portion when rotating simultaneously, the conduction portion, elastic conductor and electric conductor realize the circuit closure, send pulse electrical signal with this, realize the real-time supervision to turned angle, the accuracy of operation is improved.

Description

Handheld spectrometer capable of enlarging measurement range

Technical Field

The invention relates to the technical field of spectrometers, in particular to a handheld spectrometer capable of expanding a measurement range.

Background

The hand-held spectrometer is a spectral analysis instrument based on XRF (X-Ray Fluorescence) spectral analysis technology, mainly comprises an X-Ray tube, a detector, a CPU and a memory, and has important application in the fields of alloy, ore, environment, consumer goods and the like due to the characteristics of high efficiency, portability, accuracy and the like.

Through retrieval, a hand-held spectrometer is disclosed in chinese patent CN207007751U, comprising a spectroscope and a handle, the spectroscope and the handle are fixedly connected, a light source, a slit, a collimating lens, a grating, an imaging lens, a DMD chip (full english name) Digital micro mirror Device (chinese annotation) Digital Micromirror Device), a converging lens, a detector and a signal processor are installed in the spectroscope, the detector is connected with the signal processor, a control panel is installed outside the spectroscope, and the spectroscope is further provided with a detection port; light emitted by the light source is irradiated on a sample through the detection port to be reflected, reflected light is converged and irradiated on the DMD chip after sequentially passing through the slit, the collimating lens, the grating and the imaging lens, and then is converged and irradiated on the detector through the converging lens, the detector sends a received signal to the signal processor, and the signal processor processes the signal. This hand-held type spectrum appearance has reduced the volume of spectrum appearance through integrating the whole detection light path of spectrum appearance to use the DMD chip to modulate spectral signal, improved spectral resolution, reasonable in design, compact structure is convenient for hand-carry.

However, in the actual use process, the detected light source enters the lens and the grating through the slit, and the lens in the structure is in a fixed state, and the acquired light source is always in the same state, so that the measured range is fixed.

Disclosure of Invention

The invention aims to provide a handheld spectrometer capable of expanding a measurement range, and solves the problem that the measurement range is inconvenient to adjust in the prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

the hand-held spectrometer can enlarge the measuring range to improve the problems.

The present application is specifically such that:

including spectrum appearance casing, fixed connection in the display screen of spectrum appearance casing rear end, fixed connection in the detection unit of the incident slit of spectrum appearance casing front end and fixed connection spectrum appearance shells inner wall, still include:

the dispersion unit is connected to the inner wall of the spectrometer shell and used for decomposing and diffracting incident light;

the spectrometer comprises an expansion unit, a light source unit and a light source unit, wherein the expansion unit comprises a shaft seat fixedly connected to the inner wall of a spectrometer shell, an adjusting shaft rotatably connected to the inner wall of the shaft seat and a refractive lens fixedly connected to the outer wall of the adjusting shaft;

wherein, the extension unit still includes the driver part of fixed mounting in spectrum appearance casing diapire, refraction lens rotates the push rod of connecting through the bottom and cooperatees with driver part's output, is used for the drive refraction lens rotates the incident angle in order to change incident ray along the regulating spindle, realizes the change to the refraction scope through the change of incident angle to enlarge measuring range.

As a preferable technical scheme of the application, the driving part comprises a driving wheel disc, a supporting frame for fixing the driving wheel disc and a sensing element arranged on the inner bottom wall of the supporting frame, and the sensing element can send out a pulse signal, so that the driving period of the driving wheel disc is calculated, and the accuracy of operation is improved;

wherein the driving part further comprises:

the clamping shaft comprises a first end and a second end, the first end of the clamping shaft is fixedly connected to the middle of one side of the driving wheel disc, and the second end of the clamping shaft is fixedly connected with a clamping seat;

the screw shaft comprises a first end, a second end and a threaded section arranged on the surface of the screw shaft, the first end of the screw shaft is fixedly connected with a clamping frame matched with the clamping seat, the other end of the screw shaft is rotatably connected to the inner wall of the spectrometer shell through a bearing, and the clamping seat and the clamping frame are matched, so that the screw shaft and the clamping shaft can be conveniently assembled by personnel, and convenience can be provided for the early-stage installation and the later-stage maintenance;

the sliding part is fixedly connected to the outer wall of the sliding part, and the sliding part is meshed with the surface of the threaded section to realize position adjustment of the sliding part.

As a preferable technical scheme of the application, the retainer further comprises a sliding groove arranged on the inner wall of the retainer, and the push rod is connected to the inner wall of the sliding groove in a sliding manner;

the bottom of the push rod is also provided with a limiting part, the push rod is in sliding fit with the sliding groove, the limiting part can prevent the push rod from falling off, and meanwhile, the push rod can slide in the sliding groove, so that the refractive lens is pushed.

As a preferred technical solution of the present application, the support frame includes:

the middle part of the first support is provided with a fixing hole for fixing the sensing element;

the middle part of the second support is provided with a mounting hole for fixing a clamping shaft, and the clamping shaft is rotatably connected to the inner wall of the second support through a bearing;

the side walls of the first support and the second support are provided with positioning holes, fixing bolts are inserted into the inner walls of the positioning holes, one ends of the fixing bolts penetrating through the positioning holes are in threaded connection with the inner wall of the spectrometer shell, and the fixing bolts are connected to facilitate disassembly.

As a preferred embodiment of the present invention, the sensor element includes:

the positioning seat is fixedly connected to the inner wall of the fixing hole;

the metal conductors comprise an electric connection part fixedly connected to the side wall of the positioning seat, an elastic conductor fixedly connected to one end of the electric connection part, a conduction part fixedly connected to one side of the elastic conductor and a balance sliding block fixedly connected to one end of the elastic conductor;

the surface of the positioning seat is provided with a balance sliding chute matched with a balance sliding block, and the balance sliding block is connected to the inner wall of the balance sliding chute in a sliding manner;

the inner wall of the positioning seat is further provided with a wire, and the power connection part is electrically connected with the wire, so that the power connection of the power connection part is conveniently realized, and power supply is provided for sending pulse signals.

As the preferable technical scheme of the application, the inner side wall of the driving wheel disc is also provided with a plurality of grooves, and the two grooves are in smooth transition;

the inner wall of each groove is provided with an electric conductor, the inner wall of the driving wheel disc is provided with a conducting ring, each electric conductor is electrically connected with the conducting ring, when the conducting part is in contact with the electric conductor, a circuit is closed, at the moment, a pulse signal can be sent out, and the rotation period is conveniently recorded.

As a preferred technical solution of this application, the dispersion unit includes fixed connection in the light source base plate of spectrum appearance shell inner wall, the joint in the introduction part of light source base plate one side with set up the beam split grating that is used for the dispersed light source on the light source base plate.

As the preferable technical scheme of the application, the outer surface of the introducing component forms a horizontal light-transmitting surface and two light-condensing surfaces, and the light-condensing surfaces are convenient for introducing the ambient scattered light into the light-splitting grating.

As a preferred technical scheme of the application, the light splitting grating comprises a substrate, wherein a plurality of convex ribs are formed on one surface of the substrate, the convex ribs are parallel to each other and arranged at intervals, and a groove is formed between every two adjacent convex ribs.

As the preferred technical scheme of this application, the top of bead both sides wall all is provided with the leaded light face, inclination between leaded light face and the bead is 150.

Compared with the prior art, the invention has the beneficial effects that:

in the scheme of the application:

1. through the arrangement of the refraction lens, the push rod and the driving part, when the driving wheel disc rotates, the horizontal adjustment of the sliding part is realized through the matching of the clamping shaft and the screw shaft, and further the inclination angle of the refraction lens is adjusted, so that the incident angle is changed, different diffraction wavelength ranges are obtained in the same diffraction angle range, and further the measurement range is adjusted;

2. through the setting of dispersion unit, at first the incident light path carries out horizontal transport through horizontal printing opacity face at the introduction part surface, carry out the spotlight in the spotlight face, make originally shine on the light refraction of lateral wall goes out the plain noodles on, the optical effect of going out plain noodles tip has been improved, the light utilization ratio has been improved, finally refract to in the spectral grating, pass through the leaded light face of bead tip in the spectral grating, further refract the light of refracting on the grating surface under the effect of leaded light face, further improve the optical utilization ratio, thereby the accuracy degree of data has been improved.

Drawings

Fig. 1 is a schematic perspective view of a handheld spectrometer with an extended measurement range provided in the present application;

FIG. 2 is a schematic view of a second view angle of the handheld spectrometer with an enlarged measurement range provided herein;

FIG. 3 is a schematic cross-sectional view of a hand-held spectrometer with an extended measurement range provided by the present application;

FIG. 4 is an enlarged schematic view of the hand-held spectrometer with an enlarged measurement range shown at A in FIG. 3;

FIG. 5 is a schematic view of a partial cutaway structure of a handheld spectrometer with an extended measurement range provided in the present application;

FIG. 6 is a schematic diagram of a second view angle of the hand-held spectrometer of FIG. 5 with an extended measurement range provided by the present application;

fig. 7 is a schematic diagram illustrating a disassembled structure of an extension unit of the handheld spectrometer capable of expanding a measurement range provided in the present application;

FIG. 8 is a schematic perspective view of a sensor element of a handheld spectrometer with an enlarged measurement range according to the present application;

FIG. 9 is a schematic diagram of a dispersion unit and an optical path structure of a handheld spectrometer capable of expanding a measurement range according to the present application;

FIG. 10 is an enlarged schematic view of the handheld spectrometer provided by the present application at B in FIG. 9.

The figures are marked by:

10. a spectrometer housing; 11. a display screen; 12. an entrance slit; 13. a detection unit;

2. a dispersion unit; 210. a light source substrate; 220. an introducing part; 221. a horizontal light-transmitting surface; 222. a light-condensing surface; 230. a light splitting grating; 231. a substrate; 232. a rib; 233. a light guide surface;

3. an extension unit; 310. a shaft seat; 320. an adjustment shaft; 330. a refractive lens; 340. a drive member; 350. a push rod; 351. a restricting section; 341. a drive wheel disc; 3411. a groove; 342. a support frame; 3421. a first support; 3422. a fixing hole; 3423. a second support; 3424. positioning holes; 3425. fixing the bolt; 344. clamping a shaft; 345. a card holder; 346. a screw shaft; 347. a clamping frame; 348. a sliding part; 349. a cage; 3491. a sliding groove;

4. a sensing element; 410. positioning seats; 411. a balancing chute; 412. a wire; 420. a metal conductor; 421. an electric connection part; 422. an elastic conductor; 423. a conduction part; 424. and a balancing slide block.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of them.

Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention as claimed, but is merely representative of some embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

It should be noted that the embodiments of the present invention and the features and technical solutions thereof may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like refer to orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and such terms are used for convenience of description and simplification of the description, and do not refer to or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 10, the present invention provides a technical solution: the utility model provides a can enlarge hand-held type spectrum appearance of measuring range, includes spectrum appearance casing 10, fixed connection in the display screen 11 of spectrum appearance casing 10 rear end, fixed connection in the entrance slit 12 of spectrum appearance casing 10 front end and the detecting element 13 of fixed connection spectrum appearance casing 10 inner wall, still includes:

the dispersion unit 2 is connected to the inner wall of the spectrometer shell 10 and used for decomposing and diffracting incident light;

the expansion unit 3 comprises a shaft seat 310 fixedly connected to the inner wall of the spectrometer shell 10, an adjusting shaft 320 rotatably connected to the inner wall of the shaft seat 310 and a refractive lens 330 fixedly connected to the outer wall of the adjusting shaft 320;

the extension unit 3 further includes a driving component 340 fixedly mounted on the inner bottom wall of the spectrometer housing 10, and the refractive lens 330 is matched with an output end of the driving component 340 through a push rod 350 rotatably connected to the bottom for driving the refractive lens 330 to rotate along the adjusting shaft 320 to change an incident angle of the incident light, so as to change a light refraction range by changing the incident angle, thereby expanding a measurement range.

As shown in fig. 3, 4, 5, 6, 7 and 8, the present embodiment provides a handheld spectrometer capable of expanding a measurement range, including a driving part 340 including a driving wheel 341, a supporting frame 342 for fixing the driving wheel 341, and a sensing element 4 disposed at the inner bottom wall of the supporting frame 342, where the sensing element 4 is capable of sending a pulse signal, so as to calculate a driving period of the driving wheel 341 and improve the accuracy of operation;

in this embodiment, the surface of the driving wheel disc 341 is further fixedly connected with bar-shaped protrusions, and the bar-shaped protrusions are annularly arrayed on the surface of the driving wheel disc 341, so that when a person needs to rotate the driving wheel disc 341, the friction force on the surface of the driving wheel disc 341 can be increased, and the person can conveniently rotate the driving wheel disc 341;

wherein, the driving part 340 further includes:

the clamp shaft 344 comprises a first end and a second end, the first end of the clamp shaft 344 is fixedly connected to the middle of one side of the driving wheel disc 341, and the second end of the clamp shaft 344 is fixedly connected with the clamp seat 345;

the screw shaft 346 comprises a first end, a second end and a threaded section arranged on the surface of the screw shaft 346, the first end of the screw shaft 346 is fixedly connected with a clamping frame 347 matched with the clamping frame 345, the other end of the screw shaft 346 is rotatably connected to the inner wall of the spectrometer shell 10 through a bearing, and the clamping frame 345 is matched with the clamping frame 347, so that a person can assemble the screw shaft 346 and the clamping shaft 344 conveniently, and convenience is provided for installation in the early stage and maintenance in the later stage;

specifically, one end of each of the clamping seat 345 and the clamping frame 347 is provided with a boss which is clamped with each other, and one of the bosses at one end of the clamping seat 345 is further provided with a threaded hole, so that when the clamping seat 345 and the clamping frame 347 are clamped with each other, a worker can penetrate the bosses through bolts to fix the clamping seat 345 and the clamping frame 347, thereby improving the stability of the screw shaft 346 and the clamping shaft 344;

the inner wall of the sliding part 348 is provided with a thread groove engaged with the thread section, the sliding part 348 further comprises a retainer 349 fixedly connected to the outer wall, and the sliding part 348 is engaged with the surface of the thread section to realize position adjustment of the sliding part 348.

As shown in fig. 3, 4, 5, 6, 7 and 8, as a preferred embodiment, in addition to the above manner, the holder 349 further includes a sliding groove 3491 formed on an inner wall thereof, and the push rod 350 is slidably connected to the inner wall of the sliding groove 3491;

the bottom of the push rod 350 is further provided with a limiting part 351, the push rod 350 is in sliding fit with the sliding groove 3491, the limiting part 351 can prevent the push rod 350 from falling off, and meanwhile, the push rod 350 can also slide in the sliding groove 3491, so that the refractive lens 330 can be pushed;

according to the grating diffraction equation d (sini soil sin beta) = k-in, wherein d is the grating constant, i is the incident angle (the included angle between the incident light and the grating normal), and beta is the diffraction angle (the included angle between the diffracted light and the grating), therefore, under the same other conditions, different diffraction wavelength-ins can be obtained at the same position of the diffraction angle beta by changing the incident angle i or the grating constant d, that is, different diffraction wavelength ranges can be obtained in the same diffraction angle range. In application, two or more beams of parallel light can be generated by splitting the reflector, and are made to enter the grating at different angles, so that different diffraction wavelength ranges can be obtained in the same diffraction angle range;

therefore, when the driving wheel 341 is rotated, the sliding part 348 can be driven by the screw shaft 346 to slide horizontally on the surface of the screw shaft 346, and can be kept in a balanced state by the push rod 350 when sliding, and when the refractive lens 330 is rotated, the incident angle i can be changed, and different diffraction wavelength ranges can be obtained.

As shown in fig. 3, 4, 5, 6, 7 and 8, in addition to the above-described embodiments, the support 342 further includes:

a first support 3421, wherein a fixing hole 3422 for fixing the sensing element 4 is formed in the middle of the first support 3421;

a mounting hole for fixing the clamping shaft 344 is formed in the middle of the second support 3423, and the clamping shaft 344 is rotatably connected to the inner wall of the second support 3423 through a bearing;

the spectrometer comprises a first support 3421, a second support 3423, a spectrometer shell 10, a spectrometer, a fixing bolt 3425, a first support 3421, a second support 3423 and a drive wheel disc 341, wherein the side walls of the first support 3421 and the second support 3423 are both provided with a positioning hole 3424, the inner wall of the positioning hole 3424 is inserted with the fixing bolt 3425, one end of the fixing bolt 3425 penetrating through the positioning hole 3424 is in threaded connection with the inner wall of the spectrometer shell 10, the fixing bolt 3425 is connected with the fixing bolt 3425 to facilitate disassembly, specifically, the first support 3421 and the second support 3423 have the same integral structure, namely, the shapes are matched with each other, the lower surface of the spectrometer shell 10 is provided with a plane which is abutted against the first support 3421 and the second support 3423, meanwhile, the middle part of the plane is also provided with a hollow groove for the drive wheel disc 341 to move, and the drive wheel disc 341 can rotate in the hollow groove;

specifically, in this embodiment, push rods are further disposed on opposite sides of the first support 3421 and the second support 3423, and the push rods on the opposite sides are used to support a gap between the first support 3421 and the second support 3423, so as to provide a moving space for the driving wheel 341, and fix the first support 3421 and the second support 3423 by the fixing bolt 3425, which is convenient for installation and has high stability.

As shown in fig. 3, 4, 5, 6, 7 and 8, in addition to the above-described embodiments, the sensor element 4 further includes:

the positioning seat 410, the positioning seat 410 is fixedly connected to the inner wall of the fixing hole 3422;

in this embodiment, the positioning seat 410 further has a step, and the step can be tightly pressed against the edge of the outer wall of the fixing hole 3422;

in this embodiment, the two electrical connection portions 421 are respectively connected to two conductive lines inside the conductive wire 412, and the two electrical connection portions 421 respectively form two circuits with the conductive portions 423 through the elastic conductors 422;

wherein, the surface of the positioning seat 410 is provided with a balance sliding chute 411 matched with the balance sliding block 424, and the balance sliding block 424 is slidably connected to the inner wall of the balance sliding chute 411;

in this embodiment, the elastic conductor 422 has elasticity, that is, the elastic conductor 422 has a supporting force that is deviated in a direction away from the positioning seat 410, and the balance slider 424 slides in the balance sliding slot 411, so as to improve stability, when the elastic conductor 422 provides a reverse supporting force, that is, the conducting portion 423 always has a supporting force away from the positioning seat 410, so that the conducting portion 423 is always attached to the inner wall of the driving wheel disc 341;

wherein, the inner wall of the positioning seat 410 is further provided with a wire 412, and the electric connection portion 421 is electrically connected with the wire 412, so that the electric connection of the electric connection portion 421 is conveniently realized, and power supply is provided for sending out pulse signals.

As shown in fig. 3, 4, 5, 6, 7 and 8, as a preferred embodiment, on the basis of the above-mentioned manner, further, the inner side wall of the driving wheel disk 341 is further provided with a plurality of grooves 3411, and two grooves 3411 are in smooth transition;

the inner wall of each groove 3411 is provided with an electric conductor, the inner wall of the driving wheel disc 341 is provided with a conductive ring, each electric conductor is electrically connected with the conductive ring, when the conducting part 423 is in contact with the conductive body, a circuit closed loop is realized, a pulse signal can be sent out at the moment, the rotation period is convenient to record, the conducting part 423 slides on the inner wall of the driving wheel disc 341, when the conducting part 423 slides into the groove 3411, the electric conductor can be tightly abutted through the elastic conductor 422, the electric connection is realized, when the conducting part 423 is positioned between the two grooves 3411, the electric conductor can be separated, the purpose of power failure is further achieved, and therefore, the sending of a clearance type pulse signal can be realized;

that is to say, when the conduction part 423 is connected with the electric conductor, a closed circuit is formed, and after the closed circuit is communicated, an electric signal is sent out, and calculation is carried out through the obtained pulse signal; in other embodiments, the magnetic sensor may further include a hall sensor disposed on the circuit board, and the hall sensor may sense the magnetic member approaching the adjusting shaft 320 to output the electric signal by disposing a plurality of magnetic members rotating together with the adjusting shaft;

in this embodiment, the number of the grooves 3411 is specifically 15, that is, one rotation of the driving wheel 341 drives the screw shaft 346 to rotate one revolution, after one revolution of the screw shaft 346 is completed, the screw shaft 346 engages with the sliding portion 348 via the threaded section, so that the sliding portion 348 performs one thread cycle on the threaded section, and at this time, the sliding slot inside the sliding portion 348 pushes the push rod 350 to rotate, so as to push the refractive lens 330 to rotate with the adjusting shaft 320 as a turning point, and rotate to a corresponding angle to change the refractive angle.

As shown in fig. 4, 5, 6, 9 and 10, as a preferred embodiment, based on the above-mentioned manner, the dispersion unit 2 further includes a light source substrate 210 fixedly connected to the inner wall of the spectrometer housing 10, an introduction part 220 connected to one side of the light source substrate 210 in a clamping manner, and a light splitting grating 230 disposed on the light source substrate 210 for dispersing the light source, a horizontal light transmitting surface 221 and two light collecting surfaces 222 are formed on the outer surface of the introduction part 220, the light collecting surfaces 222 facilitate the introduction of the surrounding scattered light into the light splitting grating 230, the light splitting grating 230 includes a substrate 231, a plurality of ribs 232 are formed on one surface of the substrate 231, the plurality of ribs 232 are parallel to each other and are disposed at intervals, a light transmitting groove is formed between two adjacent ribs 232, light guiding surfaces 233 are disposed on the top of two side walls of the ribs 232, and the inclination angle between the light guiding surfaces 233 and the ribs 232 is 150 °;

specifically, in this embodiment, the light path refracted by the refractive lens 330 is reflected into the dispersion unit 2, and first passes through the introducing component 220, the surface of the introducing component 220 is horizontally conveyed through the horizontal light-transmitting surface 221, and the light is condensed in the light-condensing surface 222, so that the light originally incident on the side wall is refracted onto the light-emitting surface, the optical effect at the end of the light-emitting surface is improved, the light utilization rate is improved, and finally the light is refracted into the light-splitting grating 230, and passes through the light-guiding surface 233 at the end of the rib 232 in the light-splitting grating 230, and the light refracted on the grating surface is further refracted under the action of the light-guiding surface 233, so that the optical utilization rate is further improved.

The above embodiments are only used to illustrate the present invention and not to limit the technical solutions described in the present invention, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above specific embodiments, and therefore, any modifications or equivalents of the present invention may be made; all such modifications and variations are intended to be included herein within the scope of this disclosure and the appended claims.

Claims

1. The utility model provides a can enlarge hand-held type spectrum appearance of measuring range, includes spectrum appearance casing (10), fixed connection in display screen (11) of spectrum appearance casing (10) rear end, fixed connection in incident slit (12) and the detecting element (13) of fixed connection spectrum appearance casing (10) inner wall of spectrum appearance casing (10) front end, its characterized in that still includes:

the dispersion unit (2) is connected to the inner wall of the spectrometer shell (10) and is used for decomposing and diffracting incident light;

the spectrometer comprises an expansion unit (3), wherein the expansion unit (3) comprises a shaft seat (310) fixedly connected to the inner wall of a spectrometer shell (10), an adjusting shaft (320) rotatably connected to the inner wall of the shaft seat (310) and a refractive lens (330) fixedly connected to the outer wall of the adjusting shaft (320);

the extension unit (3) further comprises a driving part (340) fixedly mounted on the inner bottom wall of the spectrometer shell (10), and the refractive lens (330) is matched with the output end of the driving part (340) through a push rod (350) connected with the bottom in a rotating mode and used for driving the refractive lens (330) to rotate along the adjusting shaft (320) so as to change the incident angle of incident light.

2. The hand-held spectrometer with the enlarged measuring range according to claim 1, wherein the driving part (340) comprises a driving wheel (341) and a supporting frame (342) for fixing the driving wheel (341), and a sensing element (4) arranged at the inner bottom wall of the supporting frame (342);

wherein the driving part (340) further comprises:

the clamping shaft (344) comprises a first end and a second end, the first end of the clamping shaft (344) is fixedly connected to the middle of one side of the driving wheel disc (341), and the second end of the clamping shaft (344) is fixedly connected with the clamping seat (345);

the screw shaft (346) comprises a first end, a second end and a threaded section opened on the surface of the screw shaft (346), the first end of the screw shaft (346) is fixedly connected with a clamping frame (347) matched with a clamping seat (345), and the other end of the screw shaft (346) is rotatably connected to the inner wall of the spectrometer shell (10) through a bearing;

the inner wall of the sliding part (348) is provided with a thread groove meshed with the thread section, and the sliding part (348) further comprises a retainer (349) fixedly connected to the outer wall.

3. The hand-held spectrometer with the enlarged measurement range according to claim 2, wherein the holder (349) further comprises a sliding groove (3491) formed on an inner wall thereof, and the push rod (350) is slidably connected to the inner wall of the sliding groove (3491);

wherein, the bottom of the push rod (350) is also provided with a limiting part (351), and the push rod (350) is in sliding fit with the sliding groove (3491).

4. The handheld spectrometer with an extended measurement range as claimed in claim 2, wherein the support frame (342) comprises:

the middle part of the first support (3421) is provided with a fixing hole (3422) for fixing the sensing element (4);

the middle part of the second support (3423) is provided with a mounting hole for fixing a clamping shaft (344), and the clamping shaft (344) is rotatably connected to the inner wall of the second support (3423) through a bearing;

the spectrometer comprises a spectrometer shell (10), a first support (3421) and a second support (3423), wherein the side walls of the first support (3421) and the second support (3423) are respectively provided with a positioning hole (3424), the inner wall of the positioning hole (3424) is inserted with a fixing bolt (3425), and one end of the fixing bolt (3425) penetrating through the positioning hole (3424) is in threaded connection with the inner wall of the spectrometer shell (10).

5. The handheld spectrometer with extended measurement range according to claim 4, wherein the sensing element (4) comprises:

the positioning seat (410), the said positioning seat (410) is fixedly connected to the inner wall of the fixed hole (3422);

the metal conductors (420) comprise an electric connection part (421) fixedly connected to the side wall of the positioning seat (410), an elastic conductor (422) fixedly connected to one end of the electric connection part (421), a conduction part (423) fixedly connected to one side of the elastic conductor (422) and a balance sliding block (424) fixedly connected to one end of the elastic conductor (422);

the surface of the positioning seat (410) is provided with a balance sliding groove (411) matched with a balance sliding block (424), and the balance sliding block (424) is connected to the inner wall of the balance sliding groove (411) in a sliding manner;

the inner wall of the positioning seat (410) is further provided with a lead (412), and the electric connection part (421) is electrically connected with the lead (412).

6. The hand-held spectrometer with the enlarged measuring range according to claim 5, wherein the inner sidewall of the driving wheel disk (341) is further provided with a plurality of grooves (3411), and two grooves (3411) are in smooth transition;

the inner wall of each groove (3411) is provided with an electric conductor, the inner wall of the driving wheel disc (341) is provided with a conductive ring, and each electric conductor is electrically connected with the conductive ring.

7. The handheld spectrometer with the enlarged measurement range of claim 1, wherein the dispersion unit (2) comprises a light source substrate (210) fixedly connected to the inner wall of the spectrometer housing (10), an introducing part (220) clamped on one side of the light source substrate (210), and a light splitting grating (230) disposed on the light source substrate (210) for dispersing the light source.

8. The spectrometer of claim 7, wherein the outer surface of the introducing part (220) forms a horizontal light-transmitting surface (221) and two light-collecting surfaces (222).

9. The spectrometer of claim 7, wherein the grating (230) comprises a base (231), a surface of the base (231) is formed with a plurality of ribs (232), the plurality of ribs (232) are parallel to each other and spaced apart, and a groove is formed between two adjacent ribs (232).

10. The spectrometer of claim 9, wherein the top of the two side walls of the rib (232) are provided with light guide surfaces (233), and the angle between the light guide surfaces (233) and the rib (232) is 150 degrees.