CN207689358U - A kind of multi-functional camera bellows of changeable test mode - Google Patents

Abstract

The utility model relates to a multifunctional dark box with switchable test mode, which comprises a dark box body, a condenser, a sample stage base, a sample stage support assembly, a first optical fiber connector, and a second optical fiber connector; the sample stage base includes a base and a rotary table , the base is fixedly arranged at the middle position of the inner bottom surface of the black box body, the rotary table is horizontally rotatably mounted on the base, and the sample stage support assembly includes a cuvette support, a cuvette or a stage support, and a stage . The dark box of the utility model can effectively test the reflectance, transmittance and absorbance of the sample, not only realize the free switching between the reflectance, transmittance and absorbance of the detection data, but also adapt to various specifications of cuvettes, solid The clamping, positioning and detection of samples such as liquid, glass slide and film meet the needs of testing various samples.

Description

A multi-functional dark box with switchable test methods

technical field

The utility model relates to a dark box for optical testing, in particular to a multifunctional dark box with switchable testing modes.

Background technique

Spectrophotometry is a method of qualitative and quantitative analysis of the substance by measuring the absorbance of the measured sample at a specific wavelength or within a certain wavelength range. Spectrophotometry is widely used in environmental monitoring, food testing, industrial analysis, etc. field. A spectrophotometer (also known as a spectrometer) is an analytical instrument designed based on the principle of spectrophotometry.

The dark box is used to simulate the optical environment of the space, and is used for the stray light simulation test for the samples, and there is a sample stage support in the dark box. During the use of the spectrophotometer, a light source needs to be irradiated onto the sample in the dark box, and the reflection data of the light emitted by the sample is collected for analysis. At present, the detection method of the common black box equipment is relatively single. The black box of the prior art lacks the function of analyzing the reflectance, transmittance and absorbance of the sample. It is necessary to replace different detectors for the detection of reflectance, transmittance and absorbance. Detection equipment, it is difficult to realize the conversion between different detection methods, which is time-consuming and laborious; on the other hand, most of the common sample stage supports are cuvette supports, and the types of samples to be analyzed are often different (for example: liquid, solid, powder, etc.) , glass, etc.), the sample stage supports of the existing obscura are mostly fixed, and the samples to be tested cannot be replaced flexibly. Therefore, it is necessary to design a multifunctional dark box with a switchable test mode to solve the problems in the prior art.

Utility model content

In order to overcome the defects of the prior art, the utility model provides a multifunctional dark box which is convenient to operate, saves time and effort, can switch the detection mode, and can adapt to the detection of samples of different specifications.

A multifunctional dark box with a switchable test mode, comprising a black box body, a condenser, a sample stage base, a sample stage support assembly, a first optical fiber connector/fiber collimator, and a second optical fiber connector, characterized in that the dark box body The right side wall of the dark box body is provided with a through hole for the light source, and the left side wall of the dark box body is provided with a through hole for the first optical fiber. The light source through hole is opposite to the first optical fiber through hole. The rear side wall of the back side wall is provided with a through hole for the second optical fiber; the condenser is arranged in the hollow cavity of the dark box body corresponding to the position of the light source through hole, and the first optical fiber connector is set in the hollow inner cavity of the dark box body Corresponding to the position of the first optical fiber through hole, the second optical fiber connector is arranged in the hollow cavity of the dark box body corresponding to the position of the second optical fiber through hole; the sample stage base is arranged on the inner bottom surface of the dark box body, The sample stage support assembly is arranged on the sample stage base.

Further, the central axis of the light source via hole is collinear with the central axis of the first optical fiber via hole; the central axis of the light source via hole, the central axis of the first optical fiber via hole and the central axis of the second optical fiber via hole are located planes are coplanar.

Further, the sample stage base includes a base and a rotary table, the base is fixedly arranged at the center of the inner bottom surface of the black box body, the rotary table is horizontally rotatably mounted on the base, and the sample stage support assembly is arranged on on the turntable.

Further, a tray is provided on the rotary table, and a placement groove for placing the sample stage support assembly is provided at the center position of the upper surface of the tray, and the sample stage support assembly is arranged in the placement groove.

Further, a rotating handle is provided on the outer peripheral surface of the rotating table.

Further, the rotary table is integrally formed with the rotary handle.

Further, the sample stage support assembly includes a cuvette support and a cuvette, the center position of the upper surface of the cuvette support is provided with a through groove for easy insertion of the cuvette, and the cuvette support The central position on each side is provided with a through hole, and each through hole is connected with the through groove, and the central axis of the through hole on the front side and rear side of the cuvette support, the central axis of the condenser and the second optical fiber The central axes of the through holes are all collinear, and the central axes of the through holes located on the left side and the right side of the cuvette support are all collinear with the central axes of the light source through hole and the first optical fiber through hole.

Further, the sample stage support assembly includes a stage support and a stage, and the stage is arranged on an inclined surface of the stage support, so that the stage is inclined at an inclination angle of 45° to the horizontal plane; The central axis of the second optical fiber through hole forms an included angle of 45° with the inclined surface of the stage, and the central axis of the light source through hole forms an included angle of 45° with the inclined surface of the stage, which is used to measure the reflectance of the sample to be tested. test.

Further, the stage is also provided with a groove for placing the sample to be tested.

The beneficial effects of the utility model:

(1) A multi-functional camera obscura with switchable test mode of the present invention, the left side wall of the camera obscura body is provided with a through hole for the first optical fiber, the through hole for the light source is set opposite to the first optical fiber through hole, and the light passes through the condenser After being collected and irradiated on the sample, part of the light is absorbed by the medium, and the other part of the light is transmitted through the medium. The optical fiber transmits the transmittance and absorbance data to the spectrometer, which can analyze the transmittance and absorbance of the sample. The rear side wall of the dark box body is provided with a through hole for the second optical fiber. The light is collected by the condenser and then shot on the sample. A part of the light is reflected by the surface of the medium. The reflection data is transmitted to the spectrometer through the optical fiber, and the reflectance of the sample can be analyzed. . The design of the dark box of the present invention overcomes the lack of the function of analyzing the reflectance, transmittance and absorbance of the sample in the dark box of the prior art.

(2) A kind of multifunctional black box with switchable test mode of the present utility model, comprising dark box body, condenser mirror, sample stage base, sample stage support assembly, first optical fiber joint, second optical fiber joint; The spectral wavelength can be changed at any time and the focal length of the light source can be adjusted. After switching the detection mode, the optical fiber is connected to the corresponding optical fiber connector and then connected to the spectrometer for detection. The detection data can be realized in reflectance, transmittance, and absorbance without changing the detection equipment. Free switching between them saves time and effort, and achieves the purpose of saving social resources with multiple uses in one box.

(3) A multifunctional camera obscura with switchable test mode of the present utility model, the base of the sample stage includes a base and a rotating table, the base is fixedly arranged at the middle position of the inner bottom surface of the camera obscura body, and the rotating table can be rotated horizontally Installed on the base, the sample stage support assembly includes a cuvette support, a cuvette or stage support, and a stage. The setting of the test bench for samples of different specifications can be adapted to the clamping, positioning and testing of samples of various specifications such as cuvettes, solids, liquids, slides, films, etc., and meets the needs of testing various samples.

(4) A multifunctional camera obscura with switchable test mode of the present utility model, the base of the sample stage includes a base and a rotating table, the base is fixedly arranged at the center of the inner bottom surface of the camera obscura body, and the rotating table is mounted on the base in a horizontally rotatable manner . The central position of the upper surface of the tray is also provided with a placement groove for placing the sample stage support assembly. The setting of the rotating table is further used in conjunction with the sample stage bracket, so that the detection angle can be adjusted, so that the light source can be irradiated on the sample to be tested after passing through the light collecting device, and the operation is flexible, simple and practical.

Description of drawings

Fig. 1 is the structural representation of embodiment one of the utility model;

Fig. 2 is the structural representation of embodiment two of the utility model;

Fig. 3 is a schematic structural view of the dark box body of the present invention

Fig. 4 is an exploded view of the sample stage base and the sample stage support assembly of the first embodiment of the present invention;

Fig. 5 is an exploded view of the sample stage base and the sample stage support assembly of the second embodiment of the present invention.

Detailed ways

The technical scheme of the utility model is described below in conjunction with the accompanying drawings, and the direction of the concrete implementation of the utility model is based on the direction in Fig. 1 .

Embodiment one

As shown in Figure 1, a multi-functional dark box with a switchable test mode of the present invention includes a black box body 1, a condenser 2, a sample stage base 3, a sample stage support assembly 4, a first optical fiber connector 5 and a second optical fiber connector 6, of which:

The obscura body 1 is used to simulate the spatial optical environment for sample detection. The obscura body 1 is a square shell with a hollow cavity. There is a through first optical fiber via hole 12 on the top, the light source via hole 11 is opposite to the first optical fiber via hole 12, and the central axis of the light source via hole 11 is collinear with the central axis of the first optical fiber via hole 12; the dark box body 1 There is a through second fiber hole 13 on the rear side wall, and the central axis of the light source hole 11, the center axis of the first fiber hole 12 and the plane where the center axis of the second fiber hole 13 are located are coplanar.

The condenser lens 2 is used to focus and emit the scattered light that is injected into the hollow cavity of the dark box body 1 through the light source through hole 11. The condenser lens 2 is fixedly arranged in the hollow cavity of the dark box body 1 corresponding to the light source through hole 11, so that After the light source outside the dark box body 1 is injected into the hollow cavity of the dark box body 1 through the light source through hole 11, the scattered light is collected by the condenser lens 2 and concentrated on the sample.

The sample stage base 3 is used to fix the sample stage support assembly 4, and rotate the sample to be tested for fine adjustment of the angle, so that the sample is tested at the best reflection angle or transmission angle. The sample stage base 3 is arranged in the hollow inner cavity of the obscura body 1, the sample stage base 3 includes a base 31 and a rotating table 32, the base 31 is fixedly arranged at the middle position of the inner bottom surface of the obscura body 1, and the rotating table 32 can rotate horizontally Installed on the base 31, the rotating table 32 is provided with a rotating handle for the user to adjust the angle of the rotating table 32. The rotating handle is fixedly arranged on the outer peripheral surface of the rotating table 32, and the rotating table 32 and the rotating handle are integrally formed. Further, a tray is also provided on the rotary table, and a placement groove for placing the sample stage support assembly 4 is provided at the center position of the upper surface of the tray.

The sample stage support assembly 4 of the present embodiment is a cuvette support assembly, which is used to carry the sample to be tested for testing. The sample stage support assembly 4 includes a cuvette support 40 and a cuvette 41. The cuvette support of the present embodiment 40 is used to support the cuvette 41, and the cuvette 41 in this embodiment is realized by the prior art. The outer contour of the cuvette support 40 is in the shape of a cuboid, and the length direction of the cuvette support 40 is perpendicular to the plane where the turntable 32 is located. Groove, the central position on each side of cuvette support 40 is all provided with through hole, and each through hole all communicates with through groove, and is positioned at the central axis of the through hole on cuvette support 40 front side, back side It is all collinear with the central axis of the condenser 2 and the central axis of the second optical fiber through hole 13, and the central axis of the through hole on the left side and the right side of the cuvette support 40 is aligned with the light source through hole 11 and the first optical fiber through hole. The central axes of the holes 12 are all collinear. The cuvette support 40 is arranged in the placement groove of the rotary table 32, and the cuvette 41 is arranged in the through groove of the cuvette support 40.

The first optical fiber connector 5 is disposed at a position corresponding to the first optical fiber through hole 12 in the hollow cavity of the dark box body 1 . The first optical fiber connector 5 is used to connect the optical fiber, through which the optical fiber is connected to the spectrometer to analyze the transmittance and absorbance data of the sample.

The second optical fiber connector 6 is disposed at a position corresponding to the second optical fiber through hole 13 in the hollow cavity of the dark box body 1 . The second optical fiber connector 6 is used to connect the optical fiber, and connect to the spectrometer through the optical fiber to analyze the reflection data of the sample.

Embodiment two

The difference of the second embodiment is that the sample stage support assembly 4 of this embodiment is a stage support assembly, including a stage support 43 and a stage 42 . The object stage support 43 is arranged in the placement groove of the rotary table 32, and the object stage 42 is arranged on the inclined surface of the object stage support 43, so that the object stage 42 is inclined at an inclination angle of 45° with the horizontal plane, so that the sample At the best test angle; the central axis of the second optical fiber via hole 13 forms an included angle of 45° with the inclined surface of the stage 42, and the central axis of the light source via hole 11 forms an included angle of 45° with the inclined surface of the stage 42 , used to test the reflectance of the sample to be tested. The stage 42 is also provided with a groove for placing the sample to be tested, which can effectively prevent the sample to be tested from rolling on the inclined stage 42 during the test, causing inconvenience and accuracy of the test. decrease.

In the hollow cavity of the dark box body 1, a fiber collimator 7 is arranged at a position corresponding to the first fiber hole 12. The fiber collimator 7 is used to collimate the optical path and couple the light source into the optical fiber. for analysis.

Working principle: The light source is emitted from the light source through hole, first collected by the condenser and then directly irradiated on the sample to be tested. The first optical fiber through hole is set opposite to the light source through hole, part of the light is absorbed by the medium, and the other part of the light passes through the medium. When the optical fiber is connected to the first optical fiber connector and connected to the spectrometer, the optical fiber transmits the transmittance and absorbance data to the spectrometer, and the transmittance and absorbance of the sample can be analyzed; the second optical fiber through hole and the light source through hole are respectively set in two On the side wall of the adjacent dark box body, the light is collected by the condenser and then irradiated on the sample, and a part of the light is reflected by the surface of the medium. When the optical fiber is connected to the second optical fiber connector or the optical fiber collimator is connected to the spectrometer, the reflected data is transmitted through the optical fiber To the spectrometer, the spectrometer can analyze the reflectance according to the reflectance data of the measured sample.

During use, in the case of needing to detect different samples, select a suitable sample stage support according to the properties of the sample to be detected, and manually fix the sample stage support on the rotary table 32; During the analysis, turn the rotary table 32 to adjust the angle so that the light source can be irradiated on the sample to be tested after passing through the light-collecting device. After switching the detection mode according to the required detection data, the optical fiber is connected to the corresponding optical fiber connector and then connected to the spectrometer. detection. A multi-functional dark box with switchable test mode of the utility model is not only suitable for the clamping, positioning and detection of various specifications of cuvettes, solids, liquids, glass slides, films and other samples, but also can freely switch the detection mode, that is, realize the detection The conversion between reflectance, transmittance and absorbance is easy to operate and saves time and effort.

The above is only the preferred implementation of the utility model, the utility model is not limited to the above implementation, there may be local minor structural changes in the implementation process, if the various changes or modifications of the utility model do not depart from the present invention If the spirit and scope of the utility model belong to the claims of the utility model and the equivalent technical scope, the utility model also intends to include these changes and modifications.

Claims (9)

1. a kind of multi-functional camera bellows of changeable test mode, including camera bellows ontology, condenser, sample sewing platform base, sample stage branch Frame component, the first fibre-optical splice/optical fiber collimator, the second fibre-optical splice, which is characterized in that on the right side wall of the camera bellows ontology Light source via equipped with perforation, the left side wall of the camera bellows ontology are equipped with the first optical fiber via of perforation, the light source via It is oppositely arranged with the first optical fiber via, the rear wall of the camera bellows ontology is equipped with the second optical fiber via of perforation；The optically focused The position corresponding to light source via is arranged in the hollow cavity of camera bellows ontology in mirror, and first fibre-optical splice is arranged in camera bellows sheet Correspond to the position of the first optical fiber via in the hollow cavity of body, second fibre-optical splice is arranged in the hollow interior of camera bellows ontology Intracavitary corresponds to the position of the second optical fiber via；The sample sewing platform base is arranged on the inner bottom surface of camera bellows ontology, the sample Platform bracket component is arranged on sample sewing platform base.

2. a kind of multi-functional camera bellows of changeable test mode as described in claim 1, which is characterized in that the light source via Central axis it is conllinear with the central axis of the first optical fiber via；The central axis of the light source via, the first optical fiber via Co-planar where the central axis of central axis and the second optical fiber via.

3. a kind of multi-functional camera bellows of changeable test mode as described in claim 1, which is characterized in that the sample stylobate Seat includes pedestal and turntable, and the pedestal is fixed at the middle position of camera bellows ontology inner bottom surface, and the turntable can water Flat to be rotationally mounted on the base, the sample platform bracket component is arranged on the turntable.

4. a kind of multi-functional camera bellows of changeable test mode as claimed in claim 3, which is characterized in that on the turntable Equipped with pallet, the middle position of the upper surface of pallet is additionally provided with the placing groove for placing sample platform bracket component, the sample Platform bracket component is arranged in the placing groove.

5. a kind of multi-functional camera bellows of changeable test mode as claimed in claim 3, which is characterized in that the turntable Rotating handle is provided on outer circumference surface.

6. a kind of multi-functional camera bellows of changeable test mode as claimed in claim 5, which is characterized in that the turntable with Rotating handle is integrally formed.

7. a kind of multi-functional camera bellows of changeable test mode as described in claim 1, which is characterized in that the sample stage branch Frame component includes cuvette holder and cuvette, and the middle position of the upper surface of the cuvette holder is equipped with convenient for merging colorimetric The straight slot of ware, the middle position on every one side of the cuvette holder are equipped with through-hole, and each through-hole is connected with straight slot It is logical, and it is located at cuvette holder leading flank, the central axis of through-hole on trailing flank and the central axis of condenser and second The central axis of optical fiber via is conllinear, the central axis and light source of the through-hole positioned at cuvette holder left side, on right side The central axis of via and the first optical fiber via is conllinear.

8. a kind of multi-functional camera bellows of changeable test mode as described in claim 1, which is characterized in that the sample stage branch Frame component includes stage carrier and objective table, and the objective table is arranged on the inclined surface of stage carrier, make objective table with Horizontal plane is obliquely installed in 45 ° of inclination angle；The central axis of the second optical fiber via and the inclined surface of objective table are in 45 ° of folders Angle, the central axis of light source via and the inclined surface of objective table are in 45 ° of angles, for carrying out reflectance test to sample to be tested.

9. a kind of multi-functional camera bellows of changeable test mode as claimed in claim 8, which is characterized in that on the objective table It is additionally provided with convenient for placing the groove of sample to be tested.