CN211825679U - Light source integrated near-infrared spectrum analyzer - Google Patents

Abstract

The utility model discloses a light source integral type near infrared spectroscopy analysis appearance, including total mark ball subassembly and spectral module, the total mark ball subassembly includes total mark spheroid, a light source section of thick bamboo and lens cone, open total mark spheroid bottom has the through-hole to fix in steering wheel mouth department for acquire the detection thing information, total mark spheroid side edge opens porosely, and the opening direction in hole is to the total mark spheroid, in the light source section of thick bamboo insert hole, light source section of thick bamboo lower part is fixed through the jackscrew, the lens cone runs through total mark spheroid upper portion, and the lens cone stretches into in the total mark spheroid and not with total mark spheroid inner wall contact, lens cone internally mounted has the light filter and at the plane speculum in lens cone exit, has a light transmission section of thick bamboo in the lens cone emergent light direction, the light transmission. The integrating sphere assembly is adopted to directly provide a light source, and enough energy can be used for collecting the reflected light.

Description

Light source integrated near-infrared spectrum analyzer

Technical Field

The utility model relates to a spectral detection field, especially light source integral type near infrared spectroscopy analysis appearance.

Background

At present, the traditional chemical measurement method for the feed components needs to pretreat samples, needs a laboratory with good assembly, needs to perform professional long-term training on operators, often uses dangerous chemical reagents, is expensive in detection price and long in measurement time, and therefore the feed component analysis industry urgently needs an on-line analysis method which is simple and rapid and has accurate and reliable measurement results. And the near infrared spectrum technology does not need to damage the sample, and can completely meet the requirement of rapidly evaluating the quality of the feed raw materials. Currently, infrared spectrum analyzers in the market are developed towards the directions of wide spectrum range, high resolution, high integration, small size, low cost, rapid detection and the like. Moreover, most portable spectrometers cannot realize their own light sources and cannot acquire data for analysis.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve prior art not enough, provide the near infrared spectrum appearance of light source integral type.

The following technical scheme is provided for achieving the purpose:

light source integral type near infrared spectrum analysis appearance, including integrating sphere subassembly and spectral module, the integrating sphere subassembly includes integrating sphere, a light source section of thick bamboo and lens cone, open integrating sphere bottom has the through-hole to fix in steering wheel mouth department for acquire and detect the thing information, integrating sphere side edge opens porosely, the opening direction in hole is to integrating the sphere, in the light source section of thick bamboo insert hole, light source section of thick bamboo lower part is fixed through the jackscrew, the lens cone runs through integrating sphere upper portion, the lens cone stretches into integrating sphere and not with the contact of integrating sphere inner wall, lens cone internally mounted has the light filter and the plane speculum in the lens cone exit, has light transmission section of thick bamboo in the lens cone emergent light direction, light transmission section of thick bamboo other end is fixed on spectral module, spectral module inside is by the rectangle that first working face, second working face, third working face and fourth working face enclose, there are grating, slit and cylindrical mirror on the fourth working face, a light transmission section of thick bamboo passes the fourth working face, passes through the slit with light and gets into beam splitting module, and the diaphragm is installed to first working face, second working face and installs collimating mirror, diaphragm and focusing mirror, the collimating mirror is close to the third working face, the focusing mirror is close to first working face, and the diaphragm is installed to the third working face, the cylindrical mirror after-fixing has CCD, and the light of inciting from the slit is earlier through the collimating mirror to the directional projection of light collimation grating surface, and the light after the grating beam splitting is assembled the cylindrical mirror by the focusing mirror and is corrected the phase difference, and the back is incited CCD.

The utility model discloses beneficial effect does:

the loss of light transmission is reduced by increasing the action of the light source, if the light source is externally connected, the integrating sphere irradiates an object after light is homogenized, the light energy is insufficient at last, and the received light energy data is insufficient, the reflected light data of the object cannot be collected; because the reflectivity data is needed to judge the measured object, the integrating sphere assembly is adopted to directly provide a light source, and enough energy can be used for collecting the reflected light rays with enough energy.

Drawings

FIG. 1 is a schematic view of the overall structure of a near infrared spectrum analyzer with an integrated light source;

FIG. 2 is a schematic diagram of an integrating sphere assembly;

fig. 3 is a schematic view of the inner structure of the lens barrel;

fig. 4 is a schematic diagram of the internal structure of the spectroscopy module.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for convenience of description and simplification of description, and do not indicate or imply that the device or element 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.

In addition, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The light source integrated near-infrared spectrum analyzer as shown in fig. 1 comprises an integrating sphere assembly 1 and a light splitting module 2, wherein the integrating sphere assembly 1 as shown in fig. 2 comprises an integrating sphere 10, a light source cylinder 12 and a lens barrel 11, a through hole is formed in the bottom of the integrating sphere 10 and fixed at a steering wheel opening for obtaining information of a detected object, a hole is formed in the side edge of the integrating sphere 10, the opening direction of the hole is towards the inside of the integrating sphere 10, the light source cylinder 12 is inserted into the hole, the lower part of the light source cylinder 12 is fixed through a jackscrew, the lens barrel 11 penetrates through the upper part of the integrating sphere 10, the lens barrel 11 extends into the integrating sphere 10 and is not contacted with the inner wall of the integrating sphere 10, an optical filter 14 and a plane reflector 13 at the outlet of the lens barrel 11 are arranged inside the lens barrel 11 as shown in fig. 3, a light transmission cylinder 3 is arranged in the emergent light direction of the lens barrel 11, the light splitting device comprises a rectangle surrounded by a second working surface 202, a third working surface 203 and a fourth working surface 204, wherein a grating 21, a slit 27 and a cylindrical mirror 22 are arranged on the fourth working surface 204, the light transmission cylinder 3 penetrates through the fourth working surface 204 and enables light to enter the light splitting module 2 through the slit 27, a diaphragm 24, a collimating mirror 26, a diaphragm 24 and a focusing mirror 25 are arranged on the first working surface 201, the collimating mirror 26 is close to the third working surface 203, the focusing mirror 25 is close to the first working surface 201, the diaphragm 24 is arranged on the third working surface 203, a CCD23 is fixed behind the cylindrical mirror 22, light incident from the slit 27 is collimated and directionally projected onto the surface of the grating 21 through the collimating mirror 26, and light split by the grating 21 is converged to the cylindrical mirror 22 through the focusing mirror 25 to correct phase difference and then enters a CCD 23.

The inside of the integrating sphere 10 is a sphere coated with barium sulfate, and light enters the integrating sphere 10, is diffused by the barium sulfate to make the light beam more uniform, and then enters the lens barrel.

An optical filter: eliminating spectrum overlapping level and filtering out stray light outside the used wave band.

A plane mirror: the light is reflected 45 ° into the spectrometer entrance slit.

Diaphragm: the device is used for eliminating stray light in the whole transmission process of light in the light splitting module.

Grating: the light is split.

A collimating mirror: the light is collimated and directionally projected to the grating surface.

A focusing mirror: the light generated by the grating is converged on the CCD surface for imaging.

Cylindrical mirror: and phase difference is corrected, imaging quality is improved, and the resolution of the spectrometer is further improved.

The application also comprises necessary elements of the traditional near-infrared spectrometer, such as a main controller, a windowing steering engine, a wireless module, a fan, a radiator, a handle and the like, and the necessary elements are common knowledge in the field under the condition of realizing complete functions of the spectrometer and are not repeated.

When an object is measured, the steering engine sheet is opened, the light source is bright, light beams emitted by the light source irradiate the surface of the object after being homogenized by the integrating sphere, reflected light signals are collected by the lens cone and guided into the light splitting module to obtain effective spectrum signals through dispersion, and the spectrum signals are used for representing object information. The fan and the radiator perform heat dissipation work together, the steering engine moves the steering engine sheet to complete the reference process, and the light splitting module disperses the preprocessed light to obtain effective spectrum information.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (2)

1. The light source integrated near-infrared spectrum analyzer is characterized by comprising an integrating sphere component and a light splitting module, wherein the integrating sphere component comprises an integrating sphere, a light source cylinder and a lens cone, the bottom of the integrating sphere is provided with a through hole which is fixed at a steering gear opening and used for acquiring information of a detected object, the side edge of the integrating sphere is provided with a hole, the opening direction of the hole faces into the integrating sphere, the light source cylinder is inserted into the hole, the lower part of the light source cylinder is fixed through a jackscrew, the lens cone penetrates through the upper part of the integrating sphere and extends into the integrating sphere without contacting with the inner wall of the integrating sphere, a light filter and a plane reflector at the position of the lens cone are arranged inside the lens cone, a light transmission cylinder is arranged in the emergent light direction of the lens cone, the other end of the light transmission cylinder is fixed on the light splitting module, and a rectangle surrounded by a first working surface, a second working, there are grating, slit and cylindrical mirror on the fourth working face, a light transmission section of thick bamboo passes the fourth working face, passes through the slit with light and gets into beam splitting module, and the diaphragm is installed to first working face, second working face and installs collimating mirror, diaphragm and focusing mirror, the collimating mirror is close to the third working face, the focusing mirror is close to first working face, and the diaphragm is installed to the third working face, the cylindrical mirror after-fixing has CCD, and the light of inciting from the slit is earlier through the collimating mirror to the directional projection of light collimation grating surface, and the light after the grating beam splitting is assembled the cylindrical mirror by the focusing mirror and is corrected the phase difference, and the back is incited CCD.

2. The light source integrated near-infrared spectrum analyzer as claimed in claim 1, wherein the integrating sphere is a sphere coated with barium sulfate, and light enters the integrating sphere and then enters the lens barrel after being diffused by barium sulfate to make the light beam more uniform.

Images