CN218584639U - Double-light-path switching device with single light source and single detector - Google Patents
Double-light-path switching device with single light source and single detector Download PDFInfo
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- CN218584639U CN218584639U CN202222927052.6U CN202222927052U CN218584639U CN 218584639 U CN218584639 U CN 218584639U CN 202222927052 U CN202222927052 U CN 202222927052U CN 218584639 U CN218584639 U CN 218584639U
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Abstract
The utility model provides a single light source list detector's two light path auto-change over device, comprising a base plate, the collimating mirror, the mount, the anti-dazzling screen, focusing mirror and detector subassembly, collimating mirror fixed mounting is on the top of bottom plate, the mount is fixed to be set up on the bottom plate, seted up on the mount and referenced sweetgum fruit unthreaded hole and measure sweetgum fruit unthreaded hole, seted up the light trap on the anti-dazzling screen, the anti-dazzling screen rotates through slewing mechanism and sets up on the mount, the diameter of the light trap on the anti-dazzling screen is greater than or equal to the diameter of the reference sweetgum fruit unthreaded hole on the fixed section of thick bamboo, the focusing mirror is fixed to be set up in the mount, detector subassembly fixed mounting is on the mount. The double-light-path switching device of the single-light-source single detector is convenient for enabling a single-light-source light beam to selectively pass through the light hole of the measuring path and the light hole of the reference path through the matching of the bottom plate, the collimating lens, the fixing frame, the shading sheet, the focusing lens and the detector component, so that double-light-path signals can be detected through the detector component.
Description
Technical Field
The utility model relates to a two optical path auto-change over device technical field, concretely relates to two optical path auto-change over device of single light source list detector.
Background
When substance components or concentration detection is carried out by utilizing absorption characteristics of substances to specific light, two light beams are usually used, wherein one light beam is a reference light path, the other light beam is a measuring light path, the two light beams are from the same light source, the reference light path is used as a real-time light intensity reference object, and measurement errors caused by the light source can be eliminated by signal processing such as the method of dividing the light intensity of the measuring light path by the light intensity of the reference light path, and the accuracy and the reliability of measurement results are improved.
The existing method for realizing double light beams is mainly realized by using a light splitting sheet or optical fibers with a certain proportion, the basic principle is two ways as shown in fig. 7 and 8, the double light beams realized by using the light splitting sheet are relatively complex in structure, more in required parts and components and correspondingly increased in cost; the mode of utilizing optical fiber to realize double light paths is structurally flexible, but the cost is also expensive due to the adoption of the optical fiber and corresponding matching parts.
Therefore, in order to solve the above problems, a structure for realizing dual-beam measurement by using a single light source and a single detector is proposed, and particularly, a dual-light-path switching device of a single light source and a single detector is provided, which can drive a light shielding sheet to rotate by using a stepping motor, so that light beams selectively pass through a light hole of a measuring path and a light hole of a reference path, thereby obtaining two-path light signals, the special structural design of the light shielding sheet can ensure the realization of functions and the utilization efficiency of light intensity, and the dual-light-path switching device of the single light source and the single detector can be used in equipment instruments for detecting substances by using the absorption characteristics of the substances to the light with specific wavelengths, such as a water quality analyzer, a gas analyzer and various spectrometers.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
To prior art not enough, the utility model provides a single light source list detector's two light path auto-change over device to the utilization beam splitter who proposes in the solution background art realizes that two light beam are structural comparatively complicated relatively, utilizes optic fibre to realize the mode of two light paths, the comparatively expensive problem of cost.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: a double-light-path switching device of a single light source and a single detector comprises a bottom plate, a collimating lens, a fixing frame, a shading sheet, a focusing lens and a detector assembly;
the collimating lens is fixedly arranged at the top end of the bottom plate, and can change light emitted by the single light source into parallel light beams;
the fixed frame is fixedly arranged on the bottom plate, and is provided with a reference path light hole and a measuring path light hole for parallel light beams to pass through;
the shading sheet is provided with a light hole, is rotatably arranged on the fixed frame through a rotating mechanism and is used for shading the light hole of the reference path and the light hole of the measuring path;
the focusing lens is fixedly arranged in the fixed frame and used for focusing the parallel light beams;
the detector assembly is fixedly arranged on the fixing frame and used for detecting optical signals.
In order to change the light emitted by the single light source into parallel light beams, preferably, the collimating lens includes two support rods, the two support rods are both connected with the top end of the bottom plate, a support ring plate is fixedly connected between the two support rods, and a lens is fixedly mounted in the support ring plate.
For the passing of the parallel light beams, the fixing frame comprises a fixing cylinder, the fixing cylinder is fixedly connected with the bottom plate through two fixing columns, a fixing ring is fixedly connected onto the fixing cylinder, a fixing plate is arranged in the fixing ring, and the reference path light hole and the measuring path light hole are both formed in the fixing plate.
In order to rotate the lens, as the further scheme of this scheme, slewing mechanism includes step motor, step motor installs on the inside wall of solid fixed cylinder, and run through between step motor's the output and the solid fixed cylinder is connected with and rotates the post, rotate post and lens fixed connection, step motor upper shield are equipped with the protective housing, be provided with two spliced poles between protective housing and the solid fixed cylinder.
In order to facilitate the detection of optical signals, on the basis of the scheme, the detector assembly comprises two driven columns, wherein the two driven columns are fixedly connected with the fixed cylinder, driven rods are connected to the two driven columns, a driven plate is fixedly connected between the driven rods, and a detector body is installed at the top end of the driven plate.
In order to facilitate the installation of the focusing mirror, the focusing mirror is further arranged on the basis of the scheme, a mounting plate is arranged between the focusing mirror and the inner side wall of the fixed cylinder, and a mounting opening matched with the focusing mirror is formed in the mounting plate.
In order to facilitate the detection of the parallel light beams, a reference light area and a measuring light area are respectively formed between the reference path light hole and the measuring path light hole and the detector body.
In order to facilitate the passing of the parallel light beams, it should be noted that the diameter of the light-transmitting hole on the light-shielding sheet is greater than or equal to the diameter of the light-transmitting hole on the reference path on the fixed cylinder.
(III) advantageous effects
Compared with the prior art, the utility model provides a double light path auto-change over device of single light source list detector possesses following
Has the beneficial effects that:
the utility model discloses in, through the bottom plate, can support the collimating mirror, so that adjust the light that single light source sent, and through the cooperation of mount and anti-dazzling screen, be convenient for to refer to sweetgum fruit unthreaded hole or measure sweetgum fruit unthreaded hole and shelter from, cooperation through focusing mirror and detector subassembly, can adjust and detect light signal, therefore, this single light source list detector's two light path auto-change over device is convenient for pass through the bottom plate, the collimating mirror, the mount, anti-dazzling screen, focusing mirror and detector subassembly's cooperation makes the sweetgum fruit unthreaded hole and reference sweetgum fruit unthreaded hole of passing through of single light source light beam selectivity, thereby can detect double light path signal through detector subassembly.
Drawings
FIG. 1 is a schematic view of the overall three-dimensional structure of the present invention;
fig. 2 is a schematic view of the overall three-dimensional structure at another angle of the present invention;
FIG. 3 is a schematic view of a three-dimensional structure of a collimating lens according to the present invention;
fig. 4 is a schematic perspective view of the middle fixing frame of the present invention;
fig. 5 is a schematic perspective view of the rotating mechanism of the present invention;
fig. 6 is a schematic perspective view of a detector assembly according to the present invention;
FIG. 7 is a schematic diagram of a prior art method for implementing dual beams;
fig. 8 is a schematic diagram illustrating a principle of a prior art method for implementing dual beams.
In the figure: 1. a base plate; 2. a collimating mirror; 3. a fixed mount; 4. a shading sheet; 5. a rotating mechanism; 6. a focusing mirror; 7. a detector assembly; 201. a support bar; 202. a support ring plate; 203. a lens; 301. a fixed cylinder; 302. fixing a column; 303. a fixing plate; 501. a stepping motor; 502. a protective box; 503. connecting columns; 701. a driven column; 702. a driven lever; 703. a driven plate; 704. a detector body; 8. and (7) mounting the plate.
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 creative efforts all belong to the protection scope of the present invention.
Referring to fig. 1-6, a dual light path switching device of a single light source and single detector includes a base plate 1, a collimating mirror 2, a fixing frame 3, a shading sheet 4, a focusing mirror 6 and a detector assembly 7, wherein the collimating mirror 2 is fixedly installed at the top end of the base plate 1, so that light emitted by the single light source can be changed into parallel light beams, the fixing frame 3 is fixedly installed on the base plate 1, a reference path light hole and a measuring path light hole are formed in the fixing frame 3 for passing the parallel light beams, a light hole is formed in the shading sheet 4, the shading sheet 4 is rotatably installed on the fixing frame 3 through a rotating mechanism 5, so as to block the reference path light hole and the measuring path light hole, the diameter of the light hole in the shading sheet 4 is greater than or equal to the diameter of the reference path light hole in the fixing barrel 301, so as to facilitate passing of the parallel light beams, the focusing mirror 6 is fixedly installed in the fixing frame 3 for focusing the parallel light beams, a mounting plate 8 is installed between the focusing mirror 6 and the inner side wall of the fixing barrel 301, a mounting plate 8 is provided with a mounting opening matched with the focusing mirror 6, so as to facilitate stable installation of the focusing mirror 6, and the detector assembly 7 is fixedly installed on the fixing frame 3, so as to detect light signals.
The single light source irradiates on the collimating lens 2, light emitted by the single light source can be changed into a beam of parallel light, meanwhile, the light shading sheet 4 can change the position of the light hole through the matching of the rotating mechanism 5, so that the path of the parallel light beam can be changed through the matching of the light hole of the reference path and the light hole of the measuring path, and the light signal emitted by the single light source can be measured through adjusting the positions of the detector component 7 and the focusing lens 6.
In fig. 1 to 6, the collimating mirror 2 includes two support rods 201, the two support rods 201 are both connected to the top end of the bottom plate 1, a support ring plate 202 is fixedly connected between the two support rods 201, and a lens 203 is fixedly mounted in the support ring plate 202.
By connecting the support rod 201 and the support ring plate 202, the lens 203 can be stably supported, so that light emitted by a single light source can be changed into parallel light beams by adjusting the position of the lens 203.
In fig. 1-6, the fixing frame 3 includes a fixing cylinder 301, the fixing cylinder 301 is fixedly connected to the bottom plate 1 through two fixing posts 302, a fixing ring is fixedly connected to the fixing cylinder 301, a fixing plate 303 is disposed in the fixing ring, and both the reference path light hole and the measurement path light hole are disposed on the fixing plate 303.
The fixing ring is connected to the fixing barrel 301, so that the fixing plate 303 can be supported, the light through hole of the reference path and the light through hole of the measuring path can be conveniently formed, and parallel light beams can conveniently pass through the fixing ring.
In order to rotate the light shielding sheet 4, in fig. 1 to 4, the rotating mechanism 5 includes a stepping motor 501, the stepping motor 501 is installed on the inner side wall of the fixed cylinder 301, a rotating column is connected between the output end of the stepping motor 501 and the fixed cylinder 301 in a penetrating manner, the rotating column is fixedly connected with the light shielding sheet 4, a protective box 502 is covered on the stepping motor 501, and two connecting columns 503 are arranged between the protective box 502 and the fixed cylinder 301.
Through the cooperation of spliced pole 503 and guard box 502, can protect step motor 501, rotate the column through step motor 501 simultaneously, can rotate gobo 4.
In fig. 1 to 6, the detector assembly 7 includes two driven columns 701, the two driven columns 701 are both fixedly connected with the fixed cylinder 301, the two driven columns 701 are both connected with driven rods 702, a driven plate 703 is fixedly connected between the two driven rods 702, a detector body 704 is mounted at the top end of the driven plate 703, and a reference light area and a measurement light area are respectively formed between the reference light opening and the measurement light opening and the detector body 704, so as to facilitate detection of parallel light beams.
Through the connection of the driven column 701, the driven rod 702 and the driven plate 703, the detector body 704 can be stably installed so as to detect optical signals emitted by a single light source.
It should be further noted that the stepping motor 501, the detector body 704, the collimating mirror 2 and the focusing mirror 6 in this embodiment are all conventional devices that are commercially available and known to those skilled in the art, and the models can be selected or customized according to actual needs, wherein the detector body 704 can detect the optical signal emitted by a single light source.
When the single-light-source single-detector double-light-path switching device is used, firstly, a single light source irradiates the lens 203 of the collimating lens 2, the light emitted by the single light source is changed into a beam of parallel light by adjusting the positions of the collimating lens 2 and the light source, the parallel light irradiates the shading sheet 4 with the light holes, the structure of the shading sheet 4 is specially designed, the stepping motor 501 rotates the shading sheet 4 through the rotating column to change the positions of the light holes, after the focusing lens 6 is arranged in the fixed frame 3 through the mounting plate 8, the position of the detector body 704 and the position of the focusing lens 6 are adjusted to ensure that the photosensitive surface of the detector body 704 is positioned at the focus of the focusing lens 6, when the position of the light-transmitting hole of the light-shielding sheet 4 coincides with the position of the light-transmitting hole of the reference path on the fixed frame 3, the optical signal detected by the detector body 704 is the reference path signal, then the stepping motor 501 rotates the light-shielding sheet 4 by a certain angle, so that the protruding end of the light-shielding sheet 4 blocks the light-transmitting hole of the reference path formed on the fixed plate 303, and the light emitted by the single light source passes through the light-transmitting hole of the measurement path on the fixed plate 303, so that the optical signal of the measurement path can be obtained, therefore, the dual-light-path switching device of the single-light-source single detector is convenient for obtaining two optical signals by making the single light source selectively pass through the light-transmitting hole of the measurement path and the light-transmitting hole of the reference path, so that the electrical signal emitted by the single light source can be detected by the detector body 704.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A dual optical path switching device with a single light source and a single detector, comprising:
a base plate (1);
the collimating lens (2) is fixedly arranged at the top end of the bottom plate (1) and can convert light emitted by a single light source into parallel beams;
the fixing frame (3) is fixedly arranged on the bottom plate (1), and a reference path light hole and a measuring path light hole are formed in the fixing frame (3) and used for parallel light beams to pass through;
the device comprises a light shading sheet (4), a light hole is formed in the light shading sheet (4), and the light shading sheet (4) is rotatably arranged on a fixed frame (3) through a rotating mechanism (5) and used for shading the light hole of a reference path and the light hole of a measuring path;
the focusing mirror (6), the said focusing mirror (6) is fixedly arranged in the fixed mount (3), is used for the focus of the parallel light beam;
the detector assembly (7), detector assembly (7) fixed mounting is on mount (3), is used for the detection of light signal.
2. The dual optical path switching device with single light source and single detector as claimed in claim 1, wherein said collimator lens (2) comprises two supporting rods (201), both of said supporting rods (201) are connected to the top end of the base plate (1), a supporting ring plate (202) is fixedly connected between the two supporting rods (201), and a lens (203) is fixedly installed in said supporting ring plate (202).
3. The dual-light-path switching device with a single light source and a single detector as claimed in claim 2, wherein the fixing frame (3) comprises a fixing cylinder (301), the fixing cylinder (301) is fixedly connected with the bottom plate (1) through two fixing columns (302), a fixing ring is fixedly connected to the fixing cylinder (301), a fixing plate (303) is arranged in the fixing ring, and the reference path light hole and the measuring path light hole are both formed in the fixing plate (303).
4. The dual-light-path switching device with a single light source and a single detector as claimed in claim 3, wherein the rotating mechanism (5) comprises a stepping motor (501), the stepping motor (501) is mounted on the inner side wall of the fixed cylinder (301), a rotating column is connected between the output end of the stepping motor (501) and the fixed cylinder (301) in a penetrating manner, the rotating column is fixedly connected with the light shielding sheet (4), a protective box (502) is covered on the stepping motor (501), and two connecting columns (503) are arranged between the protective box (502) and the fixed cylinder (301).
5. The dual optical path switching device with single light source and single detector as claimed in claim 4, wherein said detector assembly (7) comprises two driven posts (701), both said driven posts (701) are fixedly connected with the fixed cylinder (301), both driven posts (701) are connected with driven rods (702), a driven plate (703) is fixedly connected between both said driven rods (702), and the top end of said driven plate (703) is provided with a detector body (704).
6. The switching device for two light paths with a single light source and a single detector as claimed in claim 5, wherein a mounting plate (8) is disposed between the focusing mirror (6) and the inner side wall of the fixed cylinder (301), and a mounting opening matched with the focusing mirror (6) is formed on the mounting plate (8).
7. The dual light path switching device with single light source and single detector as claimed in claim 6, wherein a reference light region and a measuring light region are formed between the reference light path opening and the measuring light path opening and the detector body (704), respectively.
8. A single light source single detector dual light path switching device as claimed in claim 7, wherein the diameter of the light hole of the light shielding plate (4) is larger than or equal to the diameter of the light hole of the reference path of the fixed barrel (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222927052.6U CN218584639U (en) | 2022-11-03 | 2022-11-03 | Double-light-path switching device with single light source and single detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222927052.6U CN218584639U (en) | 2022-11-03 | 2022-11-03 | Double-light-path switching device with single light source and single detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218584639U true CN218584639U (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222927052.6U Active CN218584639U (en) | 2022-11-03 | 2022-11-03 | Double-light-path switching device with single light source and single detector |
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| Country | Link |
|---|---|
| CN (1) | CN218584639U (en) |
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- 2022-11-03 CN CN202222927052.6U patent/CN218584639U/en active Active
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