Adaptive fastening device for fixing optical elements and control method thereof

Abstract

The present invention provides an adaptive fastening device for fixing an optical element and a control method thereof, the device comprising: a motor, a left fixed arm, a guide rod, a right movable arm, a lead screw, a plurality of tactile magnetic sensors, and a controller, wherein the first end of the left fixed arm passes through the guide rod and is fixed on the guide rod, and the second end passes through the lead screw and is fixed on the lead screw; the first end of the right movable arm passes through the guide rod, and the second end passes through the lead screw; the plurality of tactile magnetic sensors are respectively arranged at the positions where the left fixed arm and the right movable arm contact the optical element; the motor is used to control the rotation of the lead screw; the controller is used to receive the pressure values ​​of the plurality of tactile magnetic sensors, and control the motor to work according to the pressure values, and control the motor to stop working when the pressure value is within a preset range, thereby effectively reducing the surface micro-deformation of the optical element caused by stress, making the product performance closer to the software simulation design result, and improving the performance indicators of high-precision optical products.

Description

Technical Field

[0001] The present invention relates to the technical field of optical element fastening, and in particular to an adaptive fastening device for fixing an optical element, a control method for the adaptive fastening device for fixing an optical element, and a non-temporary computer-readable storage medium. Background Art

[0002] Optical components are generally divided into glass and plastic materials, and the structural parts used to fix optical components are generally divided into metal and plastic materials. When optical components made of glass are matched with fastening structural parts made of metal, a clearance fit is often used, that is, there is a small gap between the outer contour of the optical component and the inner contour of the fastening structural part. This gap can prevent the optical component and the metal structural part from extruding each other due to inconsistent changes when the expansion (or contraction) is inconsistent. If the gap is too small, it will cause damage to the optical component. If the gap is too large, the gap will further increase during contraction (or expansion), and the position of the optical component will change accordingly, causing the product to fail. When optical components made of plastic or glass are matched with fastening structural parts made of plastic, an interference fit is generally used, that is, the outer contour of the optical component is smaller than the inner contour of the fastener, and the components will be squeezed each other at room temperature.

[0003] The above two assembly states (gap and interference) are common problems in current optical imaging and lighting products. Since the thermal stress caused by assembly stress and temperature changes cannot be released, it will cause micro deformation or even cracking on the surface of optical components. Optical products are very precise systems, with the position accuracy of their components reaching the micron level and the surface accuracy reaching the nanometer level. Any tiny deformation (rigid body displacement and surface deformation) may cause product failure.

[0004] The more advanced design concept in the industry now is the interdisciplinary optical-mechanical-thermal integration simulation analysis technology, which introduces mechanics and thermals into the optical design stage and considers the deformation caused in advance, but the starting point of consideration is not to reduce deformation. For more sensitive optical components (such as gratings), flexible design is used to reduce deformation. The effect of this design depends on the mechanical properties of the fastening structure. If a "softer" material is selected, smaller stress can be obtained, but the product may have poor resistance to external forces and be prone to overall deformation; if a "harder" material is selected, the buffering effect of small stresses may be lost. Summary of the invention

[0005] In order to solve the above-mentioned technical problems, the present invention provides an adaptive fastening device for fixing optical elements, which can effectively reduce the surface micro-deformation of optical elements caused by stress, make the product performance closer to the software simulation design results, and improve the performance indicators of high-precision optical products. In addition, there is no need to change the traditional fastening method of optical elements, and only moderate modification is required for reuse, so the reusability is strong.

[0006] The technical solution adopted by the present invention is as follows:

[0007] An adaptive fastening device for fixing an optical element, comprising: a motor, a left fixed arm arranged on the left side of the optical element, a guide rod, a right movable arm arranged on the right side of the optical element, a screw rod, a plurality of tactile magnetic sensors arranged on the inner sides of the left fixed arm and the right movable arm, and a controller, wherein the left fixed arm has a first end and a second end, the first end of the left fixed arm passes through the guide rod and is fixed on the guide rod, and the second end of the left fixed arm passes through the screw rod and is fixed on the screw rod; the right movable arm has a first end and a second end, the first end of the right movable arm passes through the guide rod, and the second end of the right movable arm passes through the screw rod; the plurality of tactile magnetic sensors are respectively arranged at the positions where the left fixed arm and the right movable arm contact the optical element; the motor is connected to the screw rod close to one side of the left fixed arm for controlling the rotation of the screw rod; the controller is used to receive the pressure values ​​of the plurality of tactile magnetic sensors, control the motor to work according to the pressure values, and control the motor to stop working when the pressure value is within a preset range.

[0008] According to an embodiment of the present invention, the tactile magnetic sensor is in the form of a thin film, is disposed on the inner sides of the left fixed arm and the right movable arm, and contacts the outer surface of the optical element.

[0009] According to an embodiment of the present invention, the tactile magnetic sensor has a function of self-decoupling lateral force and longitudinal force.

[0010] According to an embodiment of the present invention, the positions of the contact points between the left fixed arm and the right movable arm and the optical element are hollowed out, so that the signal lines of the plurality of tactile magnetic sensors are connected to the controller through the hollowed-out parts.

[0011] According to an embodiment of the present invention, the screw rod is connected with a thread, and the second end of the right movable arm passes through the screw rod through the thread.

[0012] According to an embodiment of the present invention, the left fixed arm and the right movable arm have the same or different shapes.

[0013] According to an embodiment of the present invention, the left fixed arm and the right movable arm are in one of the following shapes: arc, rectangle, rectangle, and polygon.

[0014] According to one embodiment of the present invention, the controller is specifically used to: when the maximum pressure value among the multiple pressure values ​​of the tactile magnetic sensors is greater than a preset maximum pressure value, control the motor to operate, drive the screw rod to rotate, and move the right movable arm away from the left fixed arm until the maximum pressure value is within the preset range, and then control the motor to stop operating; when the minimum pressure value among the multiple pressure values ​​of the tactile magnetic sensors is less than a preset minimum pressure value, control the motor to operate, drive the screw rod to rotate, and move the right movable arm closer to the left fixed arm until the minimum pressure value is within the preset range, and then control the motor to stop operating.

[0015] The present invention also proposes a control method for an adaptive fastening device for fixing an optical element, the device comprising: a motor, a left fixed arm arranged on the left side of the optical element, a guide rod, a right movable arm arranged on the right side of the optical element, a screw rod, a plurality of tactile magnetic sensors arranged on the inner sides of the left fixed arm and the right movable arm, and a controller, the method comprising the following steps: receiving pressure values ​​of the plurality of tactile magnetic sensors; controlling the motor to work according to the pressure values, and controlling the motor to stop working when the pressure values ​​are within a preset range; when the maximum pressure value among the pressure values ​​of the plurality of tactile magnetic sensors is greater than the preset maximum pressure value, controlling the motor to work, driving the screw rod to rotate, and moving the right movable arm away from the left fixed arm until the maximum pressure value is within the preset range, and then controlling the motor to stop working; when the minimum pressure value among the pressure values ​​of the plurality of tactile magnetic sensors is less than the preset minimum pressure value, controlling the motor to work, driving the screw rod to rotate, and moving the right movable arm close to the left fixed arm until the minimum pressure value is within the preset range, and then controlling the motor to stop working.

[0016] The present invention also proposes a non-transitory computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the control method of the adaptive fastening device for fixing an optical element is implemented.

[0017] Beneficial effects of the present invention:

[0018] The present invention uses a self-decoupling tactile magnetic sensor, which is in the form of a thin film and can be attached to the inner surface of a structural part and contact the outer surface of an optical element. The sensor can feedback the compression force and friction force acting on the optical element, as well as the position of the force application point, and can decouple the lateral and longitudinal forces to facilitate the control of the right moving arm; a transmission device that uses a motor to drive a screw nut and a guide rod to guide can adjust the locking degree of the fastening structural part and change the compression stress of the optical element; a hollow design is made in the fastening structural part, and the sensor signal line is led out through the internal hollow part without affecting the light propagation path. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of an adaptive fastening device for fixing an optical element according to an embodiment of the present invention;

[0020] Figure 2 The figure is a flow chart of a control method of an adaptive fastening device for fixing an optical element according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Figure 1 FIG. 4 is a schematic diagram of an adaptive fastening device for fixing an optical element according to an embodiment of the present invention.

[0023] like Figure 1 As shown, the adaptive fastening device for fixing the optical element of the embodiment of the present invention may include: a motor 1, a left fixed arm 2 arranged on the left side of the optical element 5, a guide rod 3, a right movable arm 6 arranged on the right side of the optical element 5, a screw 7, a plurality of tactile magnetic sensors 5 arranged on the inner sides of the left fixed arm 2 and the right movable arm 6, and a controller (not specifically shown in the figure).

[0024] Wherein, the left fixed arm 2 has a first end and a second end, the first end of the left fixed arm 2 passes through the guide rod 3 and is fixed on the guide rod 3, and the second end of the left fixed arm 2 passes through the screw rod 7 and is fixed on the screw rod 7. The right movable arm 6 has a first end and a second end, the first end of the right movable arm 6 passes through the guide rod 3, and the second end of the right movable arm 6 passes through the screw rod 7. A plurality of tactile magnetic sensors 5 are respectively arranged at the positions of the contact points between the left fixed arm 2 and the right movable arm 6 and the optical element 5. The motor 1 is connected to the screw rod near one side of the left fixed arm 2, and is used to control the rotation of the screw rod 7. The controller is used to receive the pressure values ​​of the plurality of tactile magnetic sensors 5, and control the motor 1 to work according to the pressure value, and control the motor 1 to stop working when the pressure value is within a preset range.

[0025] In one embodiment of the present invention, the tactile magnetic sensor 5 is in the form of a thin film, which is arranged on the inner side of the left fixed arm 2 and the right movable arm 6, and contacts the outer surface of the optical element 5. The tactile magnetic sensor 5 has the function of self-decoupling lateral force and longitudinal force. That is to say, the tactile magnetic sensor 5 is composed of a magnetic film and a Hall sensor that has been subjected to single-sided multi-stage sinusoidal magnetization. Silicone gels of different thicknesses and elasticities can be filled between the magnetic film and the Hall sensor to adjust the sensitivity and range of the sensor. When an external force is applied to the magnetic film, the Hall sensor will measure the change in the magnetic field caused by the deformation of the magnetic film, and then the magnitude and direction of the applied external force can be measured. In one embodiment of the present invention, the lateral force represents the pressure acting on the optical element, and the longitudinal force represents the friction between the optical element and the left fixed arm and the right movable arm.

[0026] It should be noted that the number of tactile magnetic sensors 5 can be calibrated according to actual conditions. For example, they can be set at each contact point between the left fixed arm 2 and the right movable arm 6 and the optical element 5, that is, the number of tactile magnetic sensors 5 is the same as the number of contact points, thereby improving measurement accuracy. They can also be set at the contact points with the maximum and minimum pressure values ​​among the contact points, thereby reducing costs.

[0027] In one embodiment of the present invention, the positions of the contact points between the left fixed arm 2 and the right movable arm 6 and the optical element 5 are hollowed out, so that the signal lines of the multiple tactile magnetic sensors 5 are connected to the controller through the hollowed-out parts. In other words, the left fixed arm 2 and the right movable arm 6 are hollowed out at the positions where the multiple tactile magnetic sensors 5 are arranged (the positions of the contact points between the left fixed arm and the right movable arm and the optical element, i.e., the positions of the force application points), so that the signal lines of the tactile magnetic sensors 5 can be led out through the hollowed-out parts and connected to the controller without affecting the path of light propagation.

[0028] In one embodiment of the present invention, a thread is connected to the screw rod 7, and the second end of the right movable arm 6 passes through the screw rod 7 through the thread. In other words, through the design of the thread, when the pressure value is too large, the right movable arm 6 can be moved away from the left fixed arm 2, and when the pressure value is too small, the right movable arm 6 can be moved closer to the left fixed arm 6. For example, the motor 1 is controlled to rotate forward to move the right movable arm 6 away from the left fixed arm 2; the motor 1 is controlled to rotate reversely to move the right movable arm 6 closer to the left fixed arm 6.

[0029] According to one embodiment of the present invention, the shapes of the left fixed arm 2 and the right movable arm 6 can be the same or different. For example, the left fixed arm 2 and the right movable arm 6 are one of arc, rectangle, rectangle, and polygon. For example, Figure 1As shown, the left fixed arm 2 and the right movable arm 6 are both arc-shaped. Of course, the left fixed arm 2 can also be arc-shaped and the right movable arm 6 can be rectangular, as long as the optical element 5 can be clamped. It can be understood that the optical element 5 can be circular or in other shapes (rectangular, polygonal, etc.).

[0030] Further, according to an embodiment of the present invention, the controller is specifically used to: when the maximum pressure value among the pressure values ​​of multiple tactile magnetic sensors is greater than a preset maximum pressure value, control the motor to work, drive the screw rod to rotate, and move the right movable arm away from the left fixed arm until the maximum pressure value is within a preset range, and then control the motor to stop working; when the minimum pressure value among the pressure values ​​of multiple tactile magnetic sensors is less than a preset minimum pressure value, control the motor to work, drive the screw rod to rotate, and move the right movable arm closer to the left fixed arm until the minimum pressure value is within the preset range, and then control the motor to stop working.

[0031] The preset maximum pressure value indicates that the micro-deformation of the optical element surface caused by this pressure value is the maximum pressure value that will not cause damage to the product; the preset minimum pressure value indicates that the longitudinal friction force decoupled by this pressure value is sufficient to overcome the gravity of the optical element, so that the optical element will not slide down. The preset range indicates the range of the ratio of the lateral pressure to the longitudinal friction force.

[0032] It should be noted that the pressure value of the tactile magnetic sensor can be decoupled into lateral pressure and longitudinal friction, the preset maximum pressure value is the upper limit of the lateral pressure, and the preset minimum pressure value is the lower limit of the lateral pressure.

[0033] Specifically, the controller receives the pressure values ​​(including lateral pressure values ​​and longitudinal friction) sent by the multiple tactile magnetic sensors 5, takes the maximum pressure value and the minimum pressure value of the multiple lateral pressure values, and makes a judgment. Among them, when the maximum pressure value is greater than the preset maximum pressure value (for example, when heated), it means that the current lateral pressure value is too large, and it is very likely to squeeze the optical element and cause deformation. At this time, the controller starts working by controlling the motor 1 (such as forward rotation), driving the screw rod 7 to rotate at a preset speed, so that the right movable arm 6 moves smoothly in the direction away from the left fixed arm 2, thereby reducing the pressure, until the maximum pressure value is within the preset range, the control motor 1 stops working. When the maximum pressure value is less than the preset minimum pressure value (for example, when cold), it means that the current lateral pressure is too small, and when the optical element 5 has a downward trend due to its own weight, the longitudinal friction will be reduced. At this time, the controller starts working by controlling the motor 1 (such as reverse rotation), driving the screw rod 7 to rotate at a preset speed, so that the right movable arm 6 moves smoothly in the direction close to the left fixed arm 2, thereby increasing the lateral pressure and maintaining the position of the optical element, until the minimum pressure value is within the preset range, the control motor 1 stops working.

[0034] In summary, by setting the upper and lower limits of the lateral pressure, as well as the ratio of the lateral pressure to the longitudinal friction force, the device can achieve adaptive fastening of the optical element. When the temperature changes and causes the lateral pressure to change, the lateral pressure can be quickly adjusted through the signal fed back by the tactile magnetic sensor to ensure the position of the optical element without generating excessive lateral pressure, thereby ensuring the performance of the optical product.

[0035] In summary, the present invention uses a self-decoupling tactile magnetic sensor, which is in the form of a thin film and can be attached to the inner surface of a structure and contact the outer surface of an optical element. The sensor can feedback the clamping force and friction force acting on the optical element, as well as the position of the force application point, and can decouple the lateral and longitudinal forces to facilitate the control of the right moving arm; a transmission device using a motor to drive a screw nut and a guide rod can adjust the locking degree of the fastening structure and change the compression stress of the optical element; a hollow design is made in the fastening structure, and the sensor signal line is led out through the internal hollow part without affecting the light propagation path.

[0036] Corresponding to the adaptive fastening device for fixing an optical element in the above-mentioned embodiment, the present invention further provides a control method for the adaptive fastening device for fixing an optical element.

[0037] Figure 2 The figure is a flow chart of a control method of an adaptive fastening device for fixing an optical element according to an embodiment of the present invention.

[0038] In one embodiment of the present invention, the device includes: a motor, a left fixed arm disposed on the left side of the optical element, a guide rod, a right movable arm disposed on the right side of the optical element, a screw rod, a plurality of tactile magnetic sensors disposed inside the left fixed arm and the right movable arm, and a controller. It should be noted that the controller is an execution subject, and executes the following control method of the adaptive fastening device for fixing the optical element.

[0039] like Figure 2 As shown, the control method of the adaptive fastening device for fixing an optical element according to an embodiment of the present invention may include the following steps:

[0040] S1, receiving pressure values ​​of multiple tactile magnetic sensors.

[0041] S2, controlling the motor to work according to the pressure value, and controlling the motor to stop working when the pressure value is within a preset range.

[0042] S3, when the maximum pressure value among the pressure values ​​of multiple tactile magnetic sensors is greater than the preset maximum pressure value, the control motor is operated to drive the screw to rotate, and the right movable arm is moved away from the left fixed arm until the maximum pressure value is within the preset range, and the control motor stops working.

[0043] S4, when the minimum pressure value among the pressure values ​​of the multiple tactile magnetic sensors is less than the preset minimum pressure value, the control motor works to drive the screw to rotate, and the right movable arm is moved closer to the left fixed arm until the minimum pressure value is within the preset range, and the control motor stops working.

[0044] It should be noted that for details not disclosed in the control method of the adaptive fastening device for fixing optical elements in the embodiment of the present invention, please refer to the details disclosed in the adaptive fastening device for fixing optical elements in the embodiment of the present invention, and the details will not be repeated here.

[0045] According to the control method of the adaptive fastening device for fixing optical elements of the embodiment of the present invention, the pressure values ​​of multiple tactile magnetic sensors are received; the motor is controlled to work according to the pressure value, and when the pressure value is within a preset range, the motor is controlled to stop working; when the maximum pressure value among the pressure values ​​of the multiple tactile magnetic sensors is greater than the preset maximum pressure value, the motor is controlled to work, drive the screw to rotate, and move the right moving arm away from the left fixed arm until the maximum pressure value is within the preset range, and the motor is controlled to stop working; when the minimum pressure value among the pressure values ​​of the multiple tactile magnetic sensors is less than the preset minimum pressure value, the motor is controlled to work, drive the screw to rotate, and move the right moving arm closer to the left fixed arm until the minimum pressure value is within the preset range, and the motor is controlled to stop working. Therefore, the method can effectively reduce the surface micro-deformation of optical elements caused by stress, make the product performance closer to the software simulation design results, and improve the performance indicators of high-precision optical products.

[0046] Corresponding to the above embodiment, the present invention also proposes a non-transitory computer-readable storage medium.

[0047] The non-transitory computer-readable storage medium of the embodiment of the present invention stores a computer program, which, when executed by a processor, can implement the control method of the adaptive fastening device for fixing an optical element according to the above embodiment of the present invention.

[0048] According to the non-temporary computer-readable storage medium of an embodiment of the present invention, when the processor executes the computer program stored thereon, it first receives the pressure values ​​of multiple tactile magnetic sensors; controls the motor to work according to the pressure value, and controls the motor to stop working when the pressure value is within a preset range; when the maximum pressure value among the pressure values ​​of the multiple tactile magnetic sensors is greater than the preset maximum pressure value, controls the motor to work, drives the screw to rotate, and moves the right moving arm away from the left fixed arm until the maximum pressure value is within the preset range, and controls the motor to stop working; when the minimum pressure value among the pressure values ​​of the multiple tactile magnetic sensors is less than the preset minimum pressure value, controls the motor to work, drives the screw to rotate, and moves the right moving arm closer to the left fixed arm until the minimum pressure value is within the preset range, and controls the motor to stop working. In this way, the surface micro-deformation of optical elements caused by stress can be effectively reduced, the product performance is closer to the software simulation design results, and the performance indicators of high-precision optical products are improved.

[0049] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0053] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0054] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0055] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0056] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0057] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0058] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An adaptive fastening device for fixing an optical element, characterized in that: include: A motor, a left fixed arm arranged on the left side of the optical element, a guide rod, a right movable arm arranged on the right side of the optical element, a lead screw, a plurality of tactile magnetic sensors arranged inside the left fixed arm and the right movable arm, and a controller, wherein: The left fixed arm has a first end and a second end, the first end of the left fixed arm passes through the guide rod and is fixed on the guide rod, and the second end of the left fixed arm passes through the screw rod and is fixed on the screw rod; The right movable arm has a first end and a second end, the first end of the right movable arm passes through the guide rod, and the second end of the right movable arm passes through the lead screw; The plurality of tactile magnetic sensors are respectively arranged at the positions where the left fixed arm and the right movable arm contact the optical element; The motor is connected to a screw rod near one side of the left fixed arm and is used to control the rotation of the screw rod; The controller is used to receive pressure values ​​of the multiple tactile magnetic sensors, and control the motor to work according to the pressure values, and control the motor to stop working when the pressure value is within a preset range; the pressure value includes lateral force and longitudinal force; the lateral force represents the pressure acting on the optical element; the longitudinal force represents the friction between the optical element and the left fixed arm and the right movable arm.

2. The adaptive fastening device for fixing an optical element according to claim 1, characterized in that: The tactile magnetic sensor is in the form of a thin film, is disposed on the inner sides of the left fixed arm and the right movable arm, and contacts the outer surface of the optical element.

3. The adaptive fastening device for fixing an optical element according to claim 2, characterized in that: The tactile magnetic sensor has the function of self-decoupling lateral force and longitudinal force.

4. The adaptive fastening device for fixing an optical element according to claim 1, characterized in that: The positions of the contact points between the left fixed arm and the right movable arm and the optical element are hollowed out, so that the signal lines of the plurality of tactile magnetic sensors are connected to the controller through the hollowed-out parts.

5. The adaptive fastening device for fixing an optical element according to claim 1, characterized in that: The screw rod is connected with a thread, and the second end of the right movable arm passes through the screw rod through the thread.

6. The adaptive fastening device for fixing an optical element according to claim 1, characterized in that: The left fixed arm and the right movable arm may have the same or different shapes.

7. The adaptive fastening device for fixing an optical element according to claim 6, characterized in that: The left fixed arm and the right movable arm are in one of the following shapes: arc, rectangle, rectangle and polygon.

8. The adaptive fastening device for fixing an optical element according to claim 1, characterized in that: The controller is specifically used for: When the maximum pressure value among the pressure values ​​of the plurality of tactile magnetic sensors is greater than a preset maximum pressure value, the motor is controlled to work, driving the screw rod to rotate, and the right movable arm is moved away from the left fixed arm, until the maximum pressure value is within the preset range, and the motor is controlled to stop working; When the minimum pressure value among the pressure values ​​of the multiple tactile magnetic sensors is less than the preset minimum pressure value, the motor is controlled to work, driving the screw to rotate, and moving the right movable arm close to the left fixed arm until the minimum pressure value is within the preset range, and then the motor is controlled to stop working.

9. A control method for an adaptive fastening device for fixing an optical element according to any one of claims 1 to 8, characterized in that: The device comprises: a motor, a left fixed arm arranged on the left side of the optical element, a guide rod, a right movable arm arranged on the right side of the optical element, a lead screw, a plurality of tactile magnetic sensors arranged inside the left fixed arm and the right movable arm, and a controller. The method comprises the following steps: receiving pressure values ​​of a plurality of the tactile magnetic sensors; Controlling the motor to work according to the pressure value, and controlling the motor to stop working when the pressure value is within a preset range; When the maximum pressure value among the pressure values ​​of the plurality of tactile magnetic sensors is greater than a preset maximum pressure value, the motor is controlled to work, driving the screw rod to rotate, and the right movable arm is moved away from the left fixed arm, until the maximum pressure value is within the preset range, and the motor is controlled to stop working; When the minimum pressure value among the pressure values ​​of the multiple tactile magnetic sensors is less than the preset minimum pressure value, the motor is controlled to work, driving the screw to rotate, and moving the right movable arm close to the left fixed arm until the minimum pressure value is within the preset range, and then the motor is controlled to stop working.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the control method of the adaptive fastening device for fixing an optical element according to claim 9 is implemented.

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