CN220289953U - Miniature super-large angle quick reflector based on light sensation and electromagnetic drive - Google Patents
Miniature super-large angle quick reflector based on light sensation and electromagnetic drive Download PDFInfo
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- CN220289953U CN220289953U CN202321866340.3U CN202321866340U CN220289953U CN 220289953 U CN220289953 U CN 220289953U CN 202321866340 U CN202321866340 U CN 202321866340U CN 220289953 U CN220289953 U CN 220289953U
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- 238000010586 diagram Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
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- 229910000831 Steel Inorganic materials 0.000 description 1
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- 229920006335 epoxy glue Polymers 0.000 description 1
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Abstract
The utility model discloses a miniature super-large angle quick reflector based on light sensation and electromagnetic driving, which comprises a main base, a working mirror body, an electromagnetic driving assembly and a point light source sensor, wherein the working mirror body is fixedly arranged in a permanent magnet mirror seat, the two-dimensional rotating assembly comprises an inner ring seat, an outer ring seat and a needle-shaped hinge, the inner ring seat is rotatably arranged with the permanent magnet mirror seat through the needle-shaped hinge arranged in the Y-axis direction, the outer ring seat is rotatably arranged with the inner ring seat through the needle-shaped hinge arranged in the X-axis direction, the electromagnetic driving assembly comprises the permanent magnet mirror seat and a motor coil, the motor coil is a coil wound in a crisscross winding way, the inner side of the permanent magnet mirror seat close to the inside of the base is provided with a convex reflecting surface, and the point light source sensor comprises a photosensitive element and an LED emission light source which are fixedly arranged on a sensor circuit board.
Description
Technical Field
The utility model relates to the technical field of fast control reflectors, in particular to a miniature ultra-large angle fast reflector based on light sensation and electromagnetic driving.
Background
The fast control reflector is an important component which works between a light source or a receiver and a target and is used for adjusting and stabilizing the visual axis or the light beam direction of an optical system, has the advantages of small volume, compact structure, high precision, high bandwidth and the like, and has been widely applied to the important fields of space laser communication, astronomical telescope, optical stabilization, visual axis stabilization, precision capturing, aiming and tracking, deep space detection, high-precision laser processing equipment, carrying laser system and the like.
Because the quick reflector system has high frequency response characteristic requirement, is used in an optical path, has strict requirement on volume, the angle sensor in the prior art has lower space utilization rate, and the upper limit of the output of the traditional actuator in a narrow space is not high, so that higher bandwidth requirement cannot be realized. In the field of photoelectric system stability, the requirements of light weight, high power and high frequency response are gradually increased, and the rapid reflector response frequency and control precision are improved and the volume of the rapid reflector system is greatly reduced. Meanwhile, with popularization of application of the quick reflector, requirements on the rotation angle travel of the quick reflector are higher and higher, the angle range is gradually developed from original 0.5 degrees and 1 degrees to 3 degrees and 5 degrees, and meanwhile, the requirements on the ultra-large angle quick reflector system are gradually developed in an environment without using a primary image stabilizing system.
In summary, how to realize a fast mirror system with small volume, high bandwidth and ultra-large angular travel becomes a necessary research direction.
Disclosure of Invention
The utility model aims to solve the technical problems that the angle sensor in the prior art has lower space utilization rate, the upper limit of the output of the traditional actuator in a narrow space is not high, the higher bandwidth requirement cannot be realized, and the rotation angle travel of the quick reflector is small: the utility model provides a miniature super large angle quick reflector based on light sense and electromagnetic drive, which comprises a main base, two-dimensional gyration subassembly, the working mirror body, electromagnetic drive subassembly and pointolite sensor, working mirror body fixed mounting is in the inside of permanent magnet mirror seat, two-dimensional gyration subassembly includes the inner ring seat, outer loop seat and needle hinge, the needle hinge that the inner ring seat was installed through the Y axle direction rotates the installation with the permanent magnet mirror seat, the outer loop seat rotates the installation through needle hinge and the inner ring seat that install along the X axle direction, the outer loop seat is fixed on the main base, electromagnetic drive subassembly includes permanent magnet mirror seat and motor coil, motor coil is the winding of crisscross winding mode, the inboard that the permanent magnet mirror seat is close to the inside of base is provided with convex reflecting surface, pointolite sensor includes photosensitive element and the LED emission light source of fixed mounting on the sensor circuit board, photosensitive element sets up at pointolite periphery.
Optionally, the permanent magnet mirror seat is arranged at one end of the main base, the other end of the main base is fixedly provided with an end cover, and the sensor circuit board and the motor coil are arranged in the base.
Optionally, the photosensitive element and the LED emitting light source are disposed at a side close to the working mirror body, the sensor circuit board is disposed between the permanent magnet mirror base and the motor coil, and the driving circuit board connected to the motor coil is fixedly mounted on the rear cover.
Optionally, the inner ring seat is arranged at the inner side of the outer ring seat and coaxially arranged, and the needle-shaped hinges are arranged symmetrically in pairs along the vertical X-axis direction and the Y-axis direction respectively.
Optionally, the pin hinge includes a stator and a rotor.
Optionally, the needle hinge stator is provided with an adapting thread at its periphery.
Optionally, the stator end of the pin hinge is provided with a baffle.
Through the design scheme, the utility model has the following beneficial effects:
1. the needle type hinge, the inner ring seat and the outer ring seat form a two-dimensional rotary shaft system, the needle type hinge provides good supporting effect in the radial direction and the axial direction, the end face of the rotor of the needle type hinge is smooth and clean, the friction rotary moment can be sufficiently reduced, the bandwidth of the whole machine is conveniently improved,
2. the utility model uses the electromagnetic driving component with integrated design, can provide higher output effect in a very small space, rapidly and accurately drives the working mirror body, greatly improves the design bandwidth of the product while realizing the miniaturized design of the quick reflector,
3. according to the utility model, through reasonable layout of the point light source sensor assembly, the information feedback function of the ultra-large angle can be realized, the rotation angle range of the working mirror body can reach more than 20 degrees, the design possibility of the ultra-large angle quick reflecting mirror is realized, the point light source sensor can be ensured to sense the position information of the real working mirror body, excessive errors are avoided, and the control precision of the whole system is ensured.
4. The utility model realizes the function of oversized rotation angle of the working mirror body of the quick reflector in a low-precision sacrifice mode, can adapt to various light path stabilizing effects, provides more possibilities in light path design, and saves the design space of a large optical system.
Drawings
FIG. 1 is a schematic two-dimensional cross-sectional view of a structure of the present utility model;
FIG. 2 is a three-dimensional schematic view of the structure of the present utility model;
FIG. 3 is a schematic diagram of a point source sensor;
FIG. 4 is a schematic diagram of a point source sensor layout;
FIG. 5 is a schematic diagram of the principle of the electromagnetic drive assembly;
fig. 6 is a schematic view of a pin hinge structure.
In the shown drawing, a main base 1.1, an outer ring seat 1.2, a needle-shaped hinge 1.3, an inner ring seat 1.4, a working lens body 1.5, a permanent magnet lens seat 1.6, a photosensitive element 1.7, an LED emission light source 1.8, a motor coil 1.9, a drive circuit board 1.10, a rear cover 1.11, a sensor circuit board 1.12, a stator 1.31, a rotor 1.32, a adapting screw thread 1.33 and a baffle 1.34.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the accompanying drawings.
In the utility model, as shown in fig. 1-2, a permanent magnet mirror seat 1.6 is used for fixing a working mirror body 1.5, the permanent magnet mirror seat 1.6 and the working mirror body 1.5 are installed on a main base 1.1 through a two-dimensional rotation assembly, the two-dimensional rotation assembly comprises an inner ring seat 1.4, an outer ring seat 1.2 and a needle type hinge 1.3, as shown in fig. 2, the inner ring seat 1.4 is arranged at the inner side of the outer ring seat 1.2 and coaxially, the needle type hinge 1.3 is provided with four needle type hinges 1.3 which are symmetrically arranged in two directions along the vertical X axis direction and the Y axis direction respectively, the inner ring seat 1.4 is rotatably installed with the permanent magnet mirror seat 1.6 through the needle type hinge 1.3 installed in the Y axis direction, the outer ring seat 1.2 is rotatably installed with the inner ring seat 1.4 through the needle type hinge 1.3 installed in the X axis direction, the four needle type hinges 1.3 are distributed at the periphery of the working mirror body 1.5, the working mirror body 1.5 can do rotation motion around the needle type hinges 1.3 in two directions, namely, do rotation motion around the X axis direction and pitching motion around the Y axis direction, specifically, as shown in fig. 6, the needle-shaped hinge 1.3 comprises a stator 1.31 and a rotor 1.32, the inner ring seat 1.4 and the stator 1.31 of the needle-shaped hinge 1.3 in the Y direction are fixedly installed through an adaptive screw thread 1.33, the rotor 1.32 of the needle-shaped hinge 1.3 in the Y direction is inserted into an installation hole of the permanent magnet mirror seat 1.6, the permanent magnet mirror seat 1.6 can perform rotary motion around the needle-shaped hinge 1.3 in the Y direction, the outer ring seat 1.2 and the stator 1.31 of the needle-shaped hinge 1.3 in the X direction are fixedly installed through an adaptive screw thread 1.33, the rotor 1.32 of the needle-shaped hinge 1.3 in the X direction is inserted into an installation hole of the inner ring seat 1.4, the inner ring seat 1.4 and the permanent magnet mirror seat 1.6 can perform rotary motion together around the needle-shaped hinge 1.3 in the X direction, the end face of the rotor 1.32 of the needle-shaped hinge 1.3 is processed, the friction rotary moment can be sufficiently reduced, the bandwidth is conveniently improved, the end of the stator of the needle-shaped hinge 1.3 is provided with a baffle 1.34, the mounting position of the needle hinge 1.3 is limited by the baffle 1.34.
As shown in fig. 1, the driving circuit board 1.10 is fastened on the rear cover 1.11 through a screw, the rear cover 1.11 is fastened on the main base 1.1 through a screw, the driving circuit board 1.10 is connected with a motor cable of the motor coil 1.9, the motor coil 1.9 is fastened on the main base 1.1 through a screw, the motor coil 1.9 and the permanent magnet mirror base 1.6 form an electromagnetic driving assembly, as shown in fig. 5, the motor coil 1.9 is a coil wound in a crisscross winding manner, the permanent magnet mirror base 1.6 is made of permanent magnet steel materials, the motor coil 1.9 generates a magnetic field effect through two-way winding, X, Y two-way magnetic fields are generated under the condition that the motor coil 1.9 is electrified, as shown in fig. 5, X, Y two-way magnetic fields act on the permanent magnet mirror base 1.6, the needle type hinge 1.3 arranged along the X axis direction and the needle type hinge 1.3 and X, Y arranged along the Y axis direction are perpendicular to the magnetic pole direction of the two paths of magnetic fields and are parallel to the magnetic induction line direction close to one side of the permanent magnet mirror seat 1.6, and the two paths of magnetic fields of X, Y drive the permanent magnet mirror seat 1.6 to deflect around the X axis direction and the Y axis direction, so that the electromagnetic driving assembly has a driving function on the working mirror body 1.5, and the electromagnetic driving assembly is arranged to enable the utility model to have a compact structure, realize a larger output effect with a very small volume, enable the permanent magnet mirror seat 1.6 and the working mirror body to rotate rapidly and accurately, enable the motor coil 1.9 to realize forward and reverse deflection control of the working mirror body 1.5 through forward and reverse current control, and finally realize effective driving of the quick mirror through the algorithm closed loop control circuit.
The sensor circuit board 1.12 is provided with a point light source sensor, the point light source sensor emits a light source 1.8 to the reflecting surface of the permanent magnet mirror seat 1.6 through an LED, the reflected light source is incident into a photosensitive element 1.7 around the LED emitting light source 1.8, the rotation angle information of the working mirror body 1.5 is determined through the light spot distribution change, the permanent magnet mirror seat 1.6 is directly fixed with the working mirror body 1.5, the rotation angle of the working mirror body 1.5 can be measured by measuring the rotation angle of the permanent magnet mirror seat 1.6, the reflecting surface of the permanent magnet mirror seat 1.6 can be used as the measuring surface of the point light source sensor, in particular, the point light source sensor is shown in figure 4, the middle part is the LED emitting light source 1.8, four photosensitive elements 1.7 are distributed around, the light beam emitted from the LED emitting light source 1.8 irradiates on the reflecting surface protruding from the back surface of the permanent magnet mirror seat 1.6, the photosensitive element 1.7 around the point light source assembly after the light beam is reflected, forming a light spot acquisition model, when the permanent magnet lens seat 1.6 and the working lens body 1.5 are deflected integrally, the light spot model acquired by the four photosensitive elements 1.7 is changed, so that deflection angle information is acquired, an information feedback function of an ultra-large angle can be realized by reasonably arranging and arranging the point light source sensors, the rotation angle range of the working lens body 1.5 can reach more than 20 degrees, the possibility of designing the ultra-large angle rapid reflecting mirror is realized, the point light source sensors can be ensured to sense the position information of the real working lens body 1.5, excessive errors are avoided, the control precision of the whole system is ensured, a specific calculation principle is as shown in a figure 3, a fixed emission angle exists for the light beam emitted by the LED emission light source 1.8, the light beam is incident along the direction of an emission angle beta as a solid line, the light beam irradiates the inner edge of the photosensitive element 1.7 after being reflected by the solid line, and the nearest distance position of the reflecting surface and the point light source assembly is designed at the moment, when the permanent magnet lens seat 1.6 and the working lens body 1.5 are deflected integrally, the light beam is incident along the emitting angle beta as the solid line direction of the figure, is reflected along the dotted line direction and irradiates to the outer edge of the photosensitive element 1.7, at the moment, the rotating angle of the permanent magnet lens seat 1.6 and the working lens body 1.5 is measured through the gamma angle, and the rotating angle travel of the quick reflector designed by the scheme can reach more than 25 degrees through reasonable design and reasonable selection of a point light source assembly.
When the permanent magnet mirror seat 1.6 is installed, the needle type hinge 1.3 is respectively penetrated into the inner ring seat 1.4 and the permanent magnet mirror seat 1.6, and the stator 1.31 of the needle type hinge 1.3 is screwed to enable the inner side of the outer ring seat 1.2 or the inner ring seat 1.4 to be abutted against the end face of the limiting baffle plate 1.34; the outer ring seat 1.2 is fixed on the main base 1.1 by using a flange and fastening screws, and the working lens body 1.5 is adhered to the inside of the permanent magnetic lens seat 1.6 by using epoxy glue, so that the assembly work of the permanent magnetic lens seat 1.6 and the working lens body 1.5 is completed; the sensor circuit board 1.12 provided with the point light source sensor is fastened on the main base 1.1 in a screw fastening mode, the motor coil 1.9 is fixed between the sensor circuit board 1.12 and the driving circuit board 1.10 through a flange and fastening screws, an end cover is fixed at the end part of the main base 1.1, the permanent magnet mirror seat 1.6 and the working mirror body 1.5 are driven by an electromagnetic driving component formed by the motor coil 1.9 and the permanent magnet mirror seat 1.6, the communication and power supply functions can be realized through an external quick mirror controller, the closed-loop control of the whole quick mirror system is further completed, the motor coil 1.9 is electrified through the driving circuit board 1.10, two paths of winding electrification generate X, Y paths of magnetic fields, X, Y paths of magnetic fields act on the permanent magnet mirror seat 1.6, and the permanent magnet mirror seat 1.6 is controlled to deflect around the X axis direction and the Y axis direction through forward and backward current, so that the electromagnetic driving component drives the working mirror body 1.5; the light beam emitted from the LED emission light source 1.8 irradiates on the convex reflecting surface on the back of the permanent magnet mirror seat 1.6, the light beam irradiates on the photosensitive elements 1.7 around the point light source assembly after being reflected to form a light spot acquisition model, when the permanent magnet mirror seat 1.6 and the working mirror body 1.5 are deflected integrally, the light spot model acquired by the four photosensitive elements 1.7 changes, so that deflection angle information is acquired, an information feedback function of an ultra-large angle can be realized, and the rotation angle range of the working mirror body 1.5 can be up to more than 20 degrees.
Claims (7)
1. The miniature ultra-large angle quick reflector based on light sensation and electromagnetic drive is characterized by comprising a main base, a two-dimensional rotating assembly, a working mirror body, an electromagnetic drive assembly and a point light source sensor, wherein the working mirror body is fixedly arranged in a permanent magnet mirror seat, the two-dimensional rotating assembly comprises an inner ring seat, an outer ring seat and a needle type hinge, the inner ring seat is rotatably arranged with the permanent magnet mirror seat through the needle type hinge arranged in the Y-axis direction, the outer ring seat is rotatably arranged with the inner ring seat through the needle type hinge arranged in the X-axis direction, the outer ring seat is fixed on the main base, the electromagnetic drive assembly comprises the permanent magnet mirror seat and a motor coil, the motor coil is a coil wound in a crisscross winding mode, the inner side of the permanent magnet mirror seat, which is close to the inside of the base, is provided with a convex reflecting surface, the point light source sensor comprises a photosensitive element and an LED emission light source fixedly arranged on a sensor circuit board, and the photosensitive element is arranged on the periphery of the point light source.
2. The miniature super-angle quick reflector based on light sensation and electromagnetic driving according to claim 1, wherein the permanent magnet mirror seat is arranged at one end of the main base, the other end of the main base is fixedly provided with an end cover, and the sensor circuit board and the motor coil are arranged in the base.
3. The miniature super-angle quick reflector based on light sensation and electromagnetic driving according to claim 2, wherein the light sensitive element and the LED emission light source are arranged on one side close to the working mirror body, the sensor circuit board is arranged between the permanent magnet mirror base and the motor coil, and the driving circuit board connected with the motor coil is fixedly arranged on the rear cover.
4. The miniature super-large angle quick reflector based on light sensation and electromagnetic driving according to claim 1, wherein the inner ring seat is arranged on the inner side of the outer ring seat and is coaxially arranged, and the needle-shaped hinges are symmetrically arranged in pairs along the vertical X-axis direction and the Y-axis direction respectively.
5. The micro super-angle quick reflector based on light sensation and electromagnetic driving according to claim 4, wherein the pin-type hinge comprises a stator and a rotor.
6. The miniature super-angle quick reflector based on light sensation and electromagnetic driving according to claim 5, wherein the periphery of the pin-type hinge stator is provided with an adapting thread.
7. The micro ultra-large angle fast reflecting mirror based on light sensation and electromagnetic driving according to claim 6, wherein a baffle is arranged at the end of a stator of the needle type hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321866340.3U CN220289953U (en) | 2023-07-17 | 2023-07-17 | Miniature super-large angle quick reflector based on light sensation and electromagnetic drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321866340.3U CN220289953U (en) | 2023-07-17 | 2023-07-17 | Miniature super-large angle quick reflector based on light sensation and electromagnetic drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220289953U true CN220289953U (en) | 2024-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321866340.3U Active CN220289953U (en) | 2023-07-17 | 2023-07-17 | Miniature super-large angle quick reflector based on light sensation and electromagnetic drive |
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| Country | Link |
|---|---|
| CN (1) | CN220289953U (en) |
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2023
- 2023-07-17 CN CN202321866340.3U patent/CN220289953U/en active Active
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