CN117889951B - Cage type optical power meter - Google Patents
Cage type optical power meter Download PDFInfo
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- CN117889951B CN117889951B CN202410307159.1A CN202410307159A CN117889951B CN 117889951 B CN117889951 B CN 117889951B CN 202410307159 A CN202410307159 A CN 202410307159A CN 117889951 B CN117889951 B CN 117889951B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 75
- 238000001514 detection method Methods 0.000 claims abstract description 49
- 238000013016 damping Methods 0.000 claims description 36
- 238000001179 sorption measurement Methods 0.000 claims 2
- 238000005259 measurement Methods 0.000 abstract description 42
- 238000013461 design Methods 0.000 abstract description 10
- 230000008859 change Effects 0.000 description 20
- 238000000034 method Methods 0.000 description 7
- 230000003993 interaction Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009021 linear effect Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000009022 nonlinear effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/0252—Constructional arrangements for compensating for fluctuations caused by, e.g. temperature, or using cooling or temperature stabilization of parts of the device; Controlling the atmosphere inside a photometer; Purge systems, cleaning devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
- G01J1/0403—Mechanical elements; Supports for optical elements; Scanning arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
- G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
- G01J1/0418—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings using attenuators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Electromagnetism (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention discloses a cage-type optical power meter which comprises a mounting frame, an attenuation sheet and a sensor, wherein the attenuation sheet is mounted on the mounting frame, the sensor is fixedly connected with the mounting frame and connected with the attenuation sheet, the attenuation sheet can move between a first position and a second position, and when the attenuation sheet moves to the second position, the sensor acquires position information of the attenuation sheet. In addition, a plurality of groups of detection grooves are formed in the mounting frame, the detection grooves are symmetrically arranged with respect to the attenuation sheet, and the sizes of the detection grooves are different. The design can enable the optical power meter to adapt to accurate measurement of different beam sizes, the intensity of the beam can be adjusted through movement of the attenuation sheet, so that the optical power meter is adapted to beams of different sizes, the optical power meter can adapt to beams of different sizes through arrangement of a plurality of groups of detection grooves, accurate measurement of the beams of different sizes can be achieved through selection of the appropriate detection grooves, and meanwhile, the sensor can acquire the position information of the attenuation sheet, so that measurement accuracy and stability can be guaranteed.
Description
Technical Field
The invention relates to the technical field of light source measurement, in particular to a cage type optical power meter.
Background
Conventional optical power meters typically require group measurements when measuring the power of beams of different sizes, resulting in beams of multiple different sizes not being measured simultaneously. This limitation makes the optical power meter limited in practical application and low in measurement efficiency.
The traditional cage type optical power meter is usually designed to adapt to light beams with specific sizes, needs to conduct grouping measurement according to the light beams with different sizes, so that the light beams with different sizes cannot conduct power measurement at the same time, and the sensor head is often required to be manually adjusted or the aperture with different sizes is replaced to adapt to the light beams with different sizes, so that the adjustment steps are complicated, and the measurement efficiency is low.
Therefore, the measurement mode and design of the traditional cage type optical power meter have limitations, and a new optical power meter technology is needed to solve the measurement requirement of simultaneously adapting to light beams with different sizes, and improve the measurement efficiency.
Disclosure of Invention
The invention aims to provide a cage-type optical power meter, which solves the problem of low efficiency of measurement work.
To achieve the purpose, the invention adopts the following technical scheme:
The cage type optical power meter comprises a mounting frame, an attenuation sheet, a first magnetic piece and a sensor, wherein the attenuation sheet is arranged on the mounting frame and is in sliding connection with the mounting frame, and the first magnetic piece is arranged on the lower side of the attenuation sheet and is fixedly connected with the attenuation sheet; the sensor is fixedly connected with the mounting frame, the sensor is connected with the first magnetic piece, the damping piece can move between a first position and a second position, and the sensor is used for acquiring the position information of the damping piece when the damping piece moves to the second position;
The mounting frame is provided with a plurality of groups of detection grooves, the detection grooves are symmetrically arranged relative to the attenuation sheet, and the detection grooves are different in size.
Further, the mounting frame comprises an upper cover plate and a lower cover plate, the upper cover plate is provided with a sliding groove, and the damping piece is connected with the sliding groove in a sliding manner.
Further, a sliding seat for installing the damping piece is arranged on the mounting frame, and the sliding seat is connected with the sliding groove in a sliding manner.
Further, the sliding seat is provided with a sliding part, and the sliding part is connected with the sliding groove in a sliding way.
Further, the upper cover plate is provided with a limiting member for limiting movement of the damping patch between the first position and the second position.
Further, the detection groove can be adapted to a 30mm slide rail.
Further, the detection groove can be adapted to a 60mm slide rail.
Further, the detection groove comprises a first groove body and a second groove body, the first groove body and the second groove body are located on the same plane, and the horizontal height of the bottom of the inner wall of the first groove body is higher than that of the bottom of the inner wall of the second groove body.
Further, the telescopic device comprises a telescopic piece, an adjusting piece and a supporting piece, wherein the telescopic piece comprises a first telescopic piece and a second telescopic piece, the second telescopic piece is sleeved on the first telescopic piece, the first telescopic piece is provided with external threads and internal threads, the second telescopic piece is provided with external threads, the supporting piece is arranged on two sides of the width direction of the first telescopic piece, the supporting piece faces to one side of the first telescopic piece and is provided with threads, the other side of the supporting piece is connected with the mounting frame, the first telescopic piece is connected with the supporting piece in a meshed mode, and the first telescopic piece is connected with the second telescopic piece;
The adjusting piece comprises a first adjusting piece and a second adjusting piece, the first adjusting piece is connected with the first telescopic piece and used for adjusting the telescopic length of the first telescopic piece, and the second adjusting piece is connected with the second telescopic piece and used for adjusting the telescopic length of the second telescopic piece; an absorbing member is disposed in the supporting member.
In another embodiment, a calibration method of a cage-type optical power meter is also provided, which is applied to any one of the above embodiments, and includes:
S1, presetting a calibration function G, wherein G is an expression of a compensation value F, and the dependent variables of G are T and S, T is a temperature change, and the initial size and the adjusted size are the difference S;
S2, initializing a cage type optical power meter through a standard light source with output power of F1, and recording an initial size S1 and a delivery temperature T1;
s3, according to a use scene, adjusting the size of the cage type optical power meter to be a target size S2, and recording the ambient temperature T2;
s4, calculating a temperature difference value T=T2-T1, calculating a size difference value S=S2-S1, and obtaining a supplementary value F according to the calibration function G, the size difference value S and the temperature difference value T;
And S5, adjusting the size of the cage type optical power meter to an optimal size Sreal according to the compensation value F.
Compared with the prior art, the invention has the following beneficial effects: including mounting bracket, attenuation piece and sensor, the attenuation piece is installed on the mounting bracket to be connected with it, sensor also with mounting bracket fixed connection, and be connected with the attenuation piece, the attenuation piece can remove between first position and second position, and when the attenuation piece removes to the second position, the sensor will acquire its positional information. In addition, a plurality of groups of detection grooves are formed in the mounting frame, the detection grooves are symmetrically arranged with respect to the attenuation sheet, and the sizes of the detection grooves are different. The design can enable the optical power meter to adapt to accurate measurement of different beam sizes, the intensity of the beam can be adjusted through movement of the attenuation sheet, so that the optical power meter is adapted to beams of different sizes, the optical power meter can adapt to beams of different sizes through arrangement of a plurality of groups of detection grooves, accurate measurement of the beams of different sizes can be achieved through selection of the appropriate detection grooves, and meanwhile, the sensor can acquire the position information of the attenuation sheet, so that measurement accuracy and stability can be guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the invention, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the invention, without affecting the effect or achievement of the objective.
FIG. 1 is a schematic diagram of the overall structure of a cage-type optical power meter according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a part of a cage-type optical power meter according to an embodiment of the present invention;
FIG. 3 is a schematic view of a part of a cage-type optical power meter according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a partial structure of a cage-type optical power meter according to an embodiment of the present invention;
FIG. 5 is a schematic view of a partial cross-sectional structure of a cage-type optical power meter according to an embodiment of the present invention;
Illustration of: 1. a mounting frame; 11. a detection groove; 12. a first magnetic member; 13. a limiting piece; 2. an attenuation sheet; 3. a sensor; 4. a sliding seat; 41. a sliding part; 42. a chute; 5. a slider; 6. a lever; 61. a bearing block; 62. a second magnetic member; 7. a body; 71. a cable; 81. a first telescopic member; 82. a second telescopic member; 83. a first adjustment member; 84. a second adjusting member; 85. a support; 86. an absorbent member.
Detailed Description
In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate 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. It is noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
The embodiment of the invention provides a cage-type optical power meter, which comprises a mounting frame 1, an attenuation sheet 2 and a sensor 3, wherein the attenuation sheet 2 is arranged on the mounting frame 1 and is in sliding connection with the mounting frame 1, the sensor 3 is fixedly connected with the mounting frame 1, the sensor 3 is connected with the attenuation sheet 2, the attenuation sheet 2 can move between a first position and a second position, and when the attenuation sheet 2 moves to the second position, the sensor 3 acquires position information of the attenuation sheet 2;
the mounting frame 1 is provided with a plurality of groups of detection grooves 11, a plurality of groups of detection grooves 11 are symmetrically arranged relative to the attenuation sheet 2, and the sizes of the detection grooves 11 are different.
Referring to fig. 1 to 3, the cage-type optical power meter of the present invention comprises a body 7, an attenuation sheet 2, a first magnetic member 12, a sensor 3 and a mounting frame 1, wherein the mounting frame 1 is connected with the body 7 through a cable 71, the sensor 3 is fixedly connected with the mounting frame 1, the sensor 3 is connected with the first magnetic member 12, the attenuation sheet 2 can move between a first position and a second position, when the attenuation sheet 2 moves to the second position, the sensor 3 obtains position information of the attenuation sheet 2, specifically, the sensor 3 is used for obtaining position information of the attenuation sheet 2, in this embodiment, the attenuation sheet 2 is made of a non-magnetic material, the first magnetic member 12 is installed at the bottom of the attenuation sheet 2, the sensor 3 is connected with the first magnetic member 12, when the attenuation sheet 2 moves from the first position to the second position, the sensor 3 detects a magnetic field change, thereby obtaining position information of the attenuation sheet 2, in this way, the sensor 3 can monitor the position of the attenuation sheet 2 in real time, and transmit the information to the laser power meter, the laser power meter can correspondingly adjust and calculate the position information according to the measured position information, thereby realizing different power measurement and accurate measurement results of the laser power and the power measurement; accordingly, in another embodiment, the damping plate 2 is made of a magnetic material and has magnetism, and when the damping plate 2 moves, the sensor 3 acquires the magnetic field change of the damping plate 2, and acquires the position information of the damping plate 2 through the magnetic field change information.
Furthermore, a plurality of sets of detection grooves 11 are provided on the mount 1, and these detection grooves 11 are symmetrically provided with respect to the attenuation sheet 2, and their sizes are different. The design can enable the optical power meter to adapt to the accurate measurement of different beam sizes, the intensity of the beam can be adjusted through the movement of the attenuation sheet 2, so that the optical power meter is adapted to the beams with different sizes, the arrangement of the plurality of groups of detection grooves 11 enables the optical power meter to adapt to the beams with different sizes, the accurate measurement of the beams with different sizes can be realized through selecting the proper detection grooves 11, and meanwhile, the sensor 3 can acquire the position information of the attenuation sheet 2, so that the measurement accuracy and stability can be ensured.
In one embodiment, the mounting frame 1 includes an upper cover plate and a lower cover plate, the upper cover plate is provided with a sliding groove 42, and the damping piece 2 is slidingly connected with the sliding groove 42.
The upper cover plate is provided with a slide groove 42 for supporting and guiding the sliding movement of the damping patch 2. This arrangement of the slide 42 ensures a smooth movement of the damping patch 2 between the first and second positions, thereby adjusting the intensity of the light beam. The attenuator 2 is slidably connected with the chute 42, and the connection mode can effectively control the position and the movement of the attenuator 2, ensure the smooth movement of the attenuator 2, and adjust the intensity of the light beam and adapt to the light beams with different sizes.
In an embodiment, a limiting member 13 is disposed above the mounting frame 1, and the limiting member 13 is disposed on a side of the mounting frame 1 away from the body 7, for limiting the movement of the damping patch 2 between the first position and the second position.
In designing the optical power meter, a limiting member 13 is arranged on the side of the mounting frame 1 away from the optical power meter body 7 for limiting the movement of the attenuation sheet 2 between the first position and the second position. This design ensures that the range of movement of the attenuator 2 is limited, preventing it from exceeding the design range or deviating from the correct trajectory. By arranging the limiting member 13, the moving range of the attenuation sheet 2 can be accurately limited within a required range, which is helpful to ensure that the intensity of the light beam can be accurately regulated in the measuring process of the light beams with different sizes, and the limiting member 13 can effectively protect the attenuation sheet 2 and the sensor 3 from being damaged by excessive force or accidents, which is helpful to prolong the service life of the optical power meter and improve the stability.
In an embodiment, the mounting frame 1 is provided with a sliding seat 4 for mounting the damping piece 2, and the sliding seat 4 is slidably connected with the sliding groove 42.
An elliptical sliding seat 4 is arranged on one side, away from the machine body 7, of the mounting frame 1, an attenuation sheet 2 is arranged on the sliding seat 4, the attenuation sheet 2 is connected with the sliding groove 42 through sliding connection of the sliding seat 4 and the sliding groove 42, a stable supporting platform is provided by the arrangement of the sliding seat 4, and the fixation and the position stability of the attenuation sheet 2 can be ensured; meanwhile, by using the sliding seat 4, the attenuation sheet 2 can be accurately installed at a specific position, so that the optical signal can be ensured to be correctly attenuated when passing through the attenuation sheet 2, and an accurate optical power measurement result can be obtained.
In an embodiment, the sliding seat 4 is provided with a sliding portion 41, and the sliding portion 41 is slidably connected with the sliding groove 42.
The sliding seat 4 is provided with a sliding part 41 at one side close to the upper cover plate, the sliding part 41 is connected with the notch of the chute 42, and the sliding seat 4 is in sliding connection with the chute 42 through the sliding part 41, so that the sliding seat 4 drives the attenuation piece 2 to move on the chute 42; specifically, be provided with first mounting groove on the butt face of portion 41 and upper cover plate that slides, the setting of first mounting groove is used for installing first magnetic part 12, first magnetic part 12 and first mounting groove fixed connection, corresponding, first mounting groove one side still is provided with the second mounting groove, the installation is provided with slider 5 in the second mounting groove, slider 5 inlays the bottom of establishing at sliding seat 4, slider 5's setting can support effectively and guide the removal of sliding seat 4 in the in-process that slides, slider 5's use can make sliding seat 4 obtain more even and stable support in spout 42 inside, provide more reliable removal and location effect.
In an embodiment, the upper cover plate is provided with a limiting member 13, and the limiting member 13 is disposed on a side of the mounting frame 1 away from the machine body 7, and is used for limiting the damping piece 2 to move between the first position and the second position.
By providing the stopper 13, the attenuation piece 2 can be ensured to move only within a specified position range, and the attenuation range of the optical power meter can be controlled. This helps to ensure accuracy and repeatability of the measurements. The stopper 13 can effectively prevent the damping sheet 2 from exceeding its movable range, thereby avoiding damage to the damping sheet 2 or other related components.
In one embodiment, the detection slot 11 may be adapted to a 30mm slide rail.
The detection slot 11 adapted to a 30mm slide rail can be adapted to different size light beams by selecting a suitable slide rail, thereby providing a more flexible and wide measuring range. The design characteristics can adapt to the application requirements of light beams with different sizes in practice, and provide convenience for users; meanwhile, the optical power meter can better support measurement of light beams with different sizes, so that the accuracy and the reliability of measurement are improved.
In one embodiment, the detection slot 11 may be adapted to a 60mm slide rail.
By adapting the detection slot 11 of the 60mm slide rail, the optical power meter can adapt to the beam of larger size for measurement. Such design features increase the adaptability and flexibility of the optical power meter in different scenarios, providing a more comprehensive measurement solution for the user while maintaining the accuracy of the measurement.
In an embodiment, the detection tank 11 includes a first tank body and a second tank body, the first tank body and the second tank body are located on the same plane, and the level of the bottom of the inner wall of the first tank body is higher than the level of the bottom of the inner wall of the second tank body.
The upper cover plate comprises mounting columns, four groups of mounting columns are arranged, a first groove body and a second groove body are formed between every two mounting columns respectively, and the design can be better suitable for measuring light beams with different heights, so that the measuring flexibility is improved. The optical power meter can adapt to light beams with different heights by selecting a proper groove body, so that the requirement of measuring the light beams with different heights in practical application is met. Because the bottoms of the two groove bodies are not on the same horizontal line, the position and the height of the light beam can be more finely adjusted so as to more accurately measure the power; through the cell body designs of different height, can optimize the measurement of not high light beam, improve the accuracy of measurement, especially the condition of measuring to not high or not unidimensional light beam.
Referring to fig. 5, the cage-type optical power meter further includes a lever 6, a bearing block 61 and a second magnetic member 62, wherein the lever 6 is fixedly disposed on the lower cover plate and is far away from one side of the machine body 7, the bearing block 61 is disposed on one side of the lever 6 far away from the machine body 7, the second magnetic member 62 is disposed on one side of the lever 6 near the machine body 7, the second magnetic member 62 is connected with the sensor 3, when the damping plate 2 is located at a first position, the bearing block 61 is abutted against the surface of the lower cover plate, the second magnetic member 62 is abutted against the inner surface of the upper cover plate, and when the damping plate 2 is moved to a third position, the first magnetic member 12 and the second magnetic member 62 generate an interaction force, the third position is located between the first position and the second position, and the damping plate 2 is moved from the third position to the second position, and the second magnetic member 62 is moved to the surface of the lower cover plate.
Specifically, when the damping plate 2 is in the first position, the first magnetic member 12 and the bearing block 61 do not generate an interaction force, and therefore, the bearing block 61 moves downward under the action of gravity, i.e., gradually moves toward the first platen surface, at this time, the second magnetic member 62 moves away from the first platen surface and gradually moves toward the second platen inner wall surface under the action of gravity of the bearing block 61, and when the damping plate 2 moves to the third position, which is between the first position and the second position, at this time, the first magnetic member 12 and the second magnetic member 62 generate an interaction force, the magnetic sensor 3 receives a signal of the second magnetic member 62, the magnetic sensor 3 transmits the signal to the magnetic sensor 3, the circuit is turned on, starting the circuit from the third position to conduct, namely starting to start the function to detect, the damping piece 2 is from the third position to the second position, the second magnetic piece 62 generates a magnetic field, the magnetic sensor 3 detects the change of the magnetic field and generates corresponding signals to output the signals to the damping piece 2, after the damping piece 2 slides to the third position through the arrangement of the lever 6, the bearing block 61 and the second magnetic piece 62, the circuit starts to conduct, when the damping piece 2 is positioned at the third position, the circuit conducts and starts the device to detect, which means that the device can be in a working state only when the device needs to detect, and can be in a standby or dormant state at other times, thereby reducing the consumption of energy, reducing the power consumption of the device and prolonging the service life of the device by saving the energy.
More specifically, when the damping patch 2 is in the first position, no interaction force is generated between the first magnetic member 12 and the bearing block 61. Accordingly, the bearing block 61 is moved downward by gravity, i.e., gradually approaches the first platen surface. At the same time, the second magnetic member 62 is moved away from the first platen surface by the gravity of the bearing block 61, gradually approaching the second platen inner wall surface. When the damping patch 2 moves to the third position, i.e. between the first position and the second position, an interaction force is generated between the first magnetic element 12 and the second magnetic element 62, and the magneto-dependent sensor 3 receives the signal of the second magnetic element 62, so that the circuit is conducted. Starting from the third position, the circuit is turned on, i.e. the enable function is detected. When the damping plate 2 slides from the third position to the second position, the second magnetic member 62 generates a magnetic field, and the magneto-sensor 3 detects the change of the magnetic field and generates a corresponding signal to output to the damping plate 2. By providing the lever 6, the bearing block 61 and the second magnetic member 62, the circuit starts to conduct after the damping patch 2 is slid to the third position, and the device is activated for detection. This means that the device is only in an active state when detection is required, and may be in a standby or sleep state at other times, thereby reducing power consumption. By saving energy, the power consumption of the device can be reduced and the service life of the device can be prolonged.
Referring to fig. 4, in an embodiment, the cage-type optical power meter further includes a telescopic member, an adjusting member, and a supporting member 85, where the telescopic member includes a first telescopic member 81 and a second telescopic member 82, the second telescopic member 82 is sleeved on the first telescopic member 81, the first telescopic member 81 is provided with external threads and internal threads, the second telescopic member 82 is provided with external threads, the supporting member 85 is provided with threads on two sides of the first telescopic member 81 in the width direction, the supporting member 85 is provided with threads on one side facing the first telescopic member 81, the supporting member 85 on the other side is connected with the mounting frame 1, the first telescopic member 81 is in meshed connection with the supporting member 85, and the first telescopic member 81 is connected with the second telescopic member 82;
The adjusting members include a first adjusting member 83 and a second adjusting member 84, the first adjusting member 83 is connected with the first telescopic member 81 and is used for adjusting the telescopic length of the first telescopic member 81, and the second adjusting member 84 is connected with the second telescopic member 82 and is used for adjusting the telescopic length of the second telescopic member 82;
the support 85 is 7-shaped and has an absorbent member 86 disposed therein.
The first telescopic member 81 moves along the groove wall far away from the detection groove 11 by twisting the first adjusting member 83 to a certain angle by an operator, so that the purpose of reducing the size of the detection groove 11 is achieved, the measurement of light beams with different sizes is adapted, and the purpose of manually adjusting the first adjusting member 83 and the second adjusting member 84 by the operator is to reduce the influence of mechanical vibration on the measurement accuracy of the optical power meter; the size of the first telescopic member 81 in the length direction is smaller than or equal to the width size of the mounting column, so that in order to adapt to detection of more light beams with different sizes, the first telescopic member is sleeved with the second telescopic member 82, and when the first telescopic member 81 extends out to a limit, an operator twists the second adjusting member 84 manually, so that the second telescopic member 82 moves along the wall of the groove far from the detection groove 11.
The adjusting piece is used for adjusting the flexible length of the telescopic piece to change the width of the detection groove 11, adapt to different size light beams, when the flexible length of the telescopic piece is adjusted through the adjusting piece, the telescopic piece can stretch or shrink for the cell wall of the detection groove 11, thereby change the width of the detection groove 11, adapt to the light beams of different sizes, the light power meter can adapt to the light beams of different sizes in a flexible way, can be used for the light source measurement of various different sizes, the commonality of the light power meter has been improved.
The setting of support piece 85 can make the structure more firm, and support piece 85 is arc '7' word shape, is provided with the absorbing member 86 in, rotates between first extensible member 81 and the second extensible member 82 and is connected to and the meshing transmission between first extensible member 81 and the support piece 85 all can produce the heat, and the temperature can influence the measurement accuracy of optical power meter, and temperature variation can lead to optical element's refracting index to change to influence the transmission characteristic of light beam. The change of the refractive index may cause the focal length of the light beam to change, or affect the transmission path of the light, so as to affect the measurement of the optical power by the optical power meter, and when the adsorbing member 86 operates, heat is discharged outwards along the arc tube wall, so that the supporting member 85 with the arc shape of '7' is more beneficial to the adsorbing member 86 to carry out heat, increase heat dissipation, and reduce the influence of temperature on measurement accuracy.
In another embodiment, a calibration method of a cage-type optical power meter is also provided, which is applied to any one of the above embodiments, and includes:
S1, presetting a calibration function G, wherein G is an expression of a compensation value F, and the dependent variables of G are T and S, T is a temperature change, and the initial size and the adjusted size are the difference S;
S2, initializing a cage type optical power meter through a standard light source with output power of F1, and recording an initial size S1 and a delivery temperature T1;
s3, according to a use scene, adjusting the size of the cage type optical power meter to be a target size S2, and recording the ambient temperature T2;
s4, calculating a temperature difference value T=T2-T1, calculating a size difference value S=S2-S1, and obtaining a supplementary value F according to the calibration function G, the size difference value S and the temperature difference value T;
And S5, adjusting the size of the cage type optical power meter to an optimal size Sreal according to the compensation value F.
Presetting a calibration function G, wherein G is an expression of a compensation value F, and the dependent variables of G are T and S, T is a temperature change, and the initial size and the adjusted size are the difference S; the cage type optical power meter is calibrated before leaving the factory, so that the power output by a standard light source is F1, specifically, the cage type optical power meter is sleeved on a fixed station, connection is ensured to be stable and free from looseness, the size of the detection groove 11 is adjusted until the cage type optical power meter measures F1, and when the measured power value is F1, the size of the detection groove 11 is zero, namely initialization is completed;
After the use scene of the optical power meter is replaced, the corresponding temperatures are different, the temperature can influence the measurement accuracy of the optical power meter, the temperature change can cause the refractive index of the optical element to change, so that the transmission characteristic of the light beam is influenced, therefore, under a new application environment, the optical power meter needs to be recalibrated, the size of the detection groove 11 is firstly adjusted to be the target size S2, the environment temperature T2 at the moment is recorded, a temperature difference value t=t2-T1 is calculated, a size difference value s=s2-S1 is calculated, a compensation value F is obtained according to the calibration function G, the size difference value S and the temperature change T, the f=g (T, S) is compensated to S2 by the slide rail position value Sreal, F which ensures that the measurement accuracy of the optical power meter is optimal, and the S2-s1= Sreal +f is present.
By using the calibration function G, the influence of temperature change and dimension difference on the optical power is considered, and the accuracy of the calibration process is improved. The multi-factor accurate calibration can be better adapted to light beams with different temperatures and sizes, and measurement accuracy and reliability are improved.
By recording the initial size, the factory temperature and the adjusted size, the calibration function G can automatically calculate the compensation value F according to specific conditions, so that self-adaptive calibration is realized. Therefore, the optical power meter can be calibrated according to actual conditions, and the accuracy and the practicability of calibration are improved.
In the calibration process, the influence of temperature and size factors on optical power is considered, so that the compensation value F can be obtained more accurately, and the measurement result is more accurate and reliable.
The standard light source with the output power of F1 is selected as a reference, calibration can be carried out according to the output power of a specific light source, and the standard light source is suitable for different types of light sources, so that the optical power meter has stronger universality.
For the calibration of the optical power meter,
By usingSuch a polynomial function is calibrated.
The influence of temperature variation and dimension difference on compensation values can be flexibly adapted by adopting a multi-element polynomial function, and in the calibration of the optical power meter, the influence of dimension difference and temperature variation on optical power is nonlinear, and cross influence can exist. The nonlinear and complex relationship can be better adapted by adopting the multi-element polynomial function, the adaptation capability of the calibration function is improved, the actual relationship can be more accurately fitted, different conditions can be better adapted by adjusting the order and the coefficient of the polynomial, the compensation value can be more accurately calculated according to the actual condition, and the accuracy and precision of the calibration process are improved; the polynomials function considers more influencing factors and more accurate fitting relation, and can provide more accurate compensation value, thereby improving the accuracy of the measurement of the optical power meter.
A is the influence coefficient of the temperature change T on the compensation value F. This coefficient describes the linear effect of temperature variation on the compensation value.
B: the coefficient of influence of the dimensional difference S on the compensation value F is indicated. This coefficient describes the linear effect of the dimensional difference on the compensation value.
C: the coefficient of influence of the product of the temperature change T and the dimensional difference S on the compensation value F is expressed. This coefficient describes the nonlinear effect of the product of temperature change and dimensional difference on the compensation value.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The cage type optical power meter is characterized by comprising a mounting frame (1), an attenuation sheet (2), a first magnetic piece (12) and a sensor (3), wherein the attenuation sheet (2) is arranged on the mounting frame (1) and is in sliding connection with the mounting frame (1), and the first magnetic piece (12) is arranged on the lower side of the attenuation sheet (2) and is fixedly connected with the attenuation sheet (2); the sensor (3) is fixedly connected with the mounting frame (1), the sensor (3) is connected with the first magnetic piece (12), the damping piece (2) can move between a first position and a second position, and when the damping piece (2) moves to the second position, the sensor (3) is used for acquiring the position information of the damping piece (2);
a plurality of groups of detection grooves (11) are formed in the mounting frame (1), the detection grooves (11) are symmetrically arranged relative to the attenuation sheet (2), and the detection grooves (11) are different in size;
The detection groove (11) comprises a first groove body and a second groove body, the first groove body and the second groove body are positioned on the same plane, and the horizontal height of the bottom of the inner wall of the first groove body is higher than that of the bottom of the inner wall of the second groove body;
The mounting frame (1) comprises an upper cover plate, the upper cover plate comprises mounting columns, wherein the mounting columns are provided with four groups, a first groove body and a second groove body are respectively formed between every two mounting columns,
The telescopic device comprises a mounting column, and is characterized by further comprising a telescopic piece, an adjusting piece and a supporting piece (85), wherein the telescopic piece is arranged on the mounting column and comprises a first telescopic piece (81) and a second telescopic piece (82), the second telescopic piece (82) is sleeved in the first telescopic piece (81), the first telescopic piece (81) is provided with external threads and internal threads, and the second telescopic piece (82) is provided with external threads;
The supporting piece (85) is in an arc 7 shape, the supporting piece (85) is arranged on two sides of the first telescopic piece (81) in the width direction, the dimension of the first telescopic piece (81) in the length direction is smaller than or equal to the width dimension of the mounting column, and the length of one end part of the supporting piece (85) close to the first telescopic piece (81) is larger than the length of the other end part of the supporting piece (85) far away from the first telescopic piece (81);
The support piece (85) is provided with threads towards one side of the first telescopic piece (81), the other side of the support piece (85) is connected with the mounting frame (1), the first telescopic piece (81) is meshed with the support piece (85), and the first telescopic piece (81) is rotationally connected with the second telescopic piece (82);
The adjusting piece comprises a first adjusting piece (83) and a second adjusting piece (84), the first adjusting piece (83) is connected with the first telescopic piece (81) and used for adjusting the telescopic length of the first telescopic piece (81), the second adjusting piece (84) is connected with the second telescopic piece (82) and used for adjusting the telescopic length of the second telescopic piece (82), and when the telescopic length of the telescopic piece is adjusted through the adjusting piece, the telescopic piece can be stretched or contracted relative to the groove wall of the detection groove (11), so that the width of the detection groove (11) is changed;
An adsorption piece (86) is arranged in the support piece (85), and when the adsorption piece (86) operates, heat is discharged outwards along the arc-shaped pipe wall of the support piece (85).
2. Cage-type optical power meter according to claim 1, characterized in that the mounting frame (1) further comprises a lower cover plate, the upper cover plate is provided with a chute (42), and the damping plate (2) is slidingly connected with the chute (42).
3. Cage-type optical power meter according to claim 2, characterized in that the mounting frame (1) is provided with a sliding seat (4) for mounting the attenuation sheet (2), the sliding seat (4) being in sliding connection with the sliding groove (42).
4. A cage-type optical power meter according to claim 3, characterized in that the sliding seat (4) is provided with a sliding portion (41), the sliding portion (41) being slidingly connected with the chute (42).
5. Cage-type optical power meter according to claim 2, characterized in that the upper cover plate is provided with a stop (13) for limiting the movement of the attenuation disc (2) between the first and the second position.
6. Cage-type optical power meter according to claim 1, characterized in that the detection slot (11) is adaptable to a 30mm slide rail.
7. Cage-type optical power meter according to claim 1, characterized in that the detection slot (11) is adaptable to a 60mm slide rail.
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| CN202410307159.1A CN117889951B (en) | 2024-03-18 | 2024-03-18 | Cage type optical power meter |
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| CN202410307159.1A CN117889951B (en) | 2024-03-18 | 2024-03-18 | Cage type optical power meter |
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| CN117889951A CN117889951A (en) | 2024-04-16 |
| CN117889951B true CN117889951B (en) | 2024-05-14 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6064468A (en) * | 1997-01-13 | 2000-05-16 | Fuji Photo Film Co., Ltd. | Light source position adjusting device and method |
| CN108827603A (en) * | 2018-09-03 | 2018-11-16 | 深圳市杰普特光电股份有限公司 | Semiconductor laser numerical aperture automatic test equipment and method |
| CN117664323A (en) * | 2024-01-31 | 2024-03-08 | 深圳市维度科技股份有限公司 | Rotatable laser power meter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7077564B2 (en) * | 2003-06-18 | 2006-07-18 | Coherent, Inc. | Laser power meter |
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- 2024-03-18 CN CN202410307159.1A patent/CN117889951B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6064468A (en) * | 1997-01-13 | 2000-05-16 | Fuji Photo Film Co., Ltd. | Light source position adjusting device and method |
| CN108827603A (en) * | 2018-09-03 | 2018-11-16 | 深圳市杰普特光电股份有限公司 | Semiconductor laser numerical aperture automatic test equipment and method |
| CN117664323A (en) * | 2024-01-31 | 2024-03-08 | 深圳市维度科技股份有限公司 | Rotatable laser power meter |
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