Prism anti-shake assembly

Abstract

The utility model provides a prism anti-shake assembly which is installed in a prism cabin and comprises a control circuit board, a rotating frame which can swing left and right and is installed in the prism cabin, and a prism assembly which can swing in a pitching mode and is installed in the rotating frame. Driving magnetic steel and sensing magnetic steel are arranged on the rotating frame; the control circuit board is provided with a gyroscope, an outer driving coil which is opposite to the driving magnetic steel up and down, and an outer Hall element which is opposite to the sensing magnetic steel up and down; the prism assembly is provided with an inner shaft circuit board, and the inner shaft circuit board is provided with an inner drive coil vertically opposite to the drive magnetic steel and an inner Hall element vertically opposite to the sensing magnetic steel. According to the utility model, independent magnetic steel is respectively adopted for driving and detecting the prism, so that the mutual interference of signals is reduced, the output noise of the Hall element is reduced, the anti-shake precision of the device is improved, and meanwhile, the device has the advantages of small overall appearance, high modularization degree, convenience in assembly and debugging and high cost performance.

Description

Technical Field

[0001] This utility model relates to the field of telescope image stabilization technology, specifically to a prism image stabilization component. Background Technology

[0002] Even minor vibrations during telescope use can cause severe shaking of the field of view, making it difficult to observe detailed targets. The applicant filed a prior patent application (CN202420643584.3) disclosing a prism gimbal assembly. This assembly uses a gyroscope sensor and a Hall effect sensor to detect telescope vibration and prism deflection, and then drives a magnet to move based on the detected information, thereby deflecting the prism and counteracting the effect of telescope vibration on the field of view. However, the applicant discovered that this technology uses only one magnet to drive the prism in both directions and detect its position. This leads to increased output noise from the Hall effect sensor and reduces the stabilization accuracy of the prism gimbal assembly. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a prism anti-shake component.

[0004] This utility model is achieved through the following technical solution: a prism anti-shake component, installed in a prism cabin, comprising: a control circuit board, a rotating frame installed in the prism cabin that can swing left and right, and a prism component installed in the rotating frame that can swing up and down.

[0005] The rotating frame is provided with a driving magnet and a sensing magnet; the control circuit board is provided with a gyroscope, an external driving coil that is vertically opposite to the driving magnet, and an external Hall element that is vertically opposite to the sensing magnet; the prism assembly is provided with an inner shaft circuit board, which is provided with an inner driving coil that is vertically opposite to the driving magnet and an inner Hall element that is vertically opposite to the sensing magnet, and the inner shaft circuit board is electrically connected to the control circuit board.

[0006] Furthermore, the control circuit board is fixed inside the prism chamber, the upper end of the rotating frame is rotatably connected to the control circuit board, and the lower end of the rotating frame is rotatably connected to the bottom of the prism chamber.

[0007] An upper outer bearing is mounted on the control circuit board via a mounting shaft. An upper outer bearing mounting groove is provided on the top of the rotating frame. A lower outer bearing is mounted on the bottom of the rotating frame via a mounting shaft. A lower outer bearing mounting groove is provided on the bottom of the prism compartment. The upper outer bearing is installed in the upper outer bearing mounting groove, and the lower outer bearing is installed in the lower outer bearing mounting groove.

[0008] The left and right side walls of the rotating frame are respectively provided with inner bearing mounting grooves, and the left and right sides of the prism assembly are respectively equipped with inner bearings through mounting shafts, and the two inner bearings are respectively installed in the two inner bearing mounting grooves.

[0009] The top of the rotating frame is provided with a first limiting block, and the control circuit board is provided with a second limiting block; when the rotating frame swings left and right, the first limiting block can abut against the second limiting block to limit the swing angle of the rotating frame.

[0010] The inner shaft circuit board and the control circuit board are connected by a flexible ribbon cable.

[0011] Compared with the prior art, the embodiments of this application have the following beneficial effects: the present invention uses independent magnets for driving and detecting the prism, which reduces mutual interference of signals, reduces the output noise of the Hall element, and improves the anti-shake accuracy of the device. Attached Figure Description

[0012] The accompanying drawings, which are provided to further illustrate this application and constitute a part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute a limitation thereof. In the drawings, the same reference numerals denote the same components.

[0013] Figure 1 This is a structural diagram of the prism anti-shake component of this utility model.

[0014] Figure 2 This is a disassembled schematic diagram of the prism stabilization component of this utility model.

[0015] Figure 3 This is a schematic diagram of the prism image stabilization component of this utility model applied to a telescope.

[0016] The reference numerals in the above figures are as follows: 1-rotating frame, 2-inner bearing mounting groove, 3-drive magnet, 4-outer bearing mounting groove, 5-upper outer bearing, 6-sensing magnet, 7-control circuit board, 8-first limit stop, 10-inner drive coil, 11-inner Hall element, 12-inner shaft circuit board, 13-prism assembly, 14-inner bearing, 15-flexible cable, 16-prism compartment, 17-eyepiece, 18-objective lens. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] It should be noted that if the terms "first," "second," etc., are used in the specification, claims, and accompanying drawings of this application, they are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0019] In this application, when terms such as "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" are used, they indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0020] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0021] Furthermore, in this application, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] Example

[0024] This embodiment discloses a prism anti-shake component, which is installed inside the prism compartment 16 of the telescope and can counteract the impact of telescope shaking on the field of view.

[0025] like Figure 1 , 2 As shown, the prism image stabilization assembly includes: a control circuit board 7, a rotating frame 1, and a prism assembly 13. The control circuit board 7 is fixed inside the prism chamber 16, the rotating frame 1 is mounted inside the prism chamber 16 and can swing left and right, and the prism assembly 13 is mounted inside the rotating frame 1 and can swing up and down.

[0026] Specifically, an upper outer bearing 5 is mounted on the control circuit board 7 via a mounting shaft. An upper outer bearing mounting groove 4 is provided at the top of the rotating frame 1, and a lower outer bearing is mounted on the bottom of the rotating frame 1 via a mounting shaft. A lower outer bearing mounting groove is provided at the bottom of the prism compartment 16. In the installed state, the upper outer bearing 5 is installed in the upper outer bearing mounting groove 4, and the lower outer bearing is installed in the lower outer bearing mounting groove, thus allowing the rotating frame 1 to swing left and right.

[0027] In addition, the left and right side walls of the rotating frame 1 are respectively provided with inner bearing mounting grooves 2, and the left and right sides of the prism assembly 13 are respectively mounted with inner bearings 14 via mounting shafts. In the installed state, the left and right inner bearings 14 are respectively installed in the left and right inner bearing mounting grooves 2, so that the prism assembly 13 can swing up and down.

[0028] Specifically, the prism assembly 13 consists of a prism frame and prisms installed inside the prism frame, and the inner bearing 14 is installed on the left and right side walls of the prism frame via a mounting shaft.

[0029] like Figure 2As shown, the rotating frame 1 is equipped with a driving magnet 3 and a sensing magnet 6, located at opposite ends of the top of the rotating frame 1. Correspondingly, the control circuit board 7 is equipped with an external driving coil and an external Hall effect sensor. The external driving coil and the driving magnet 3 are vertically opposite each other, forming a left-right driving structure that drives the rotating frame 1 to swing left and right. The external Hall effect sensor is vertically opposite the sensing magnet 6, detecting the positional information between them, i.e., the angle of the left-right swing of the rotating frame 1, and transmitting this information to the control circuit board 7. The control circuit board 7 also includes a gyroscope, which detects the overall jitter of the telescope and transmits this information to the control circuit board 7.

[0030] The prism assembly 13 is provided with an inner shaft circuit board 12, on which an inner drive coil 10 and an inner Hall element 11 are disposed. Similarly, the inner drive coil 10 and the drive magnet 3 are vertically opposite each other, forming a vertical drive structure that drives the prism assembly 13 to pitch and oscillate. The inner Hall element 11 is vertically opposite the sensing magnet 6, and can also detect the position information between itself and the sensing magnet 6, i.e., detect the pitch and oscillation angle information of the prism assembly 13, and transmit this information to the inner shaft circuit board 12. The inner shaft circuit board 12 is electrically connected to the control circuit board 7 via a flexible ribbon cable 15, thus enabling information transmission between the inner shaft circuit board 12 and the control circuit board 7.

[0031] The control circuit board 7 can acquire the detection information of the external Hall element, the internal Hall element and the gyroscope, and control the external drive coil and the internal drive coil 10 to conduct electricity through the acquired information, so that the external drive coil and the drive magnet 3 and the internal drive coil 10 and the drive magnet 3 are offset relative to each other, thereby causing the rotating frame 1 to swing left and right and the prism assembly 13 to pitch up and down.

[0032] In one implementation, a first limiting block 8 is provided on the top of the rotating frame 1, and a second limiting block is provided on the control circuit board 7. Specifically, there are two first limiting blocks 8, spaced apart from each other, and one second limiting block is located between the two first limiting blocks 8. When the rotating frame 1 swings left and right to a certain position, the second limiting block will abut against the two first limiting blocks 8, thereby limiting the swing angle of the rotating frame 1. Of course, there can also be two second limiting blocks and one first limiting block 8 located between the two second limiting blocks; this structure can also limit the swing angle of the rotating frame 1.

[0033] As another implementation, the prism image stabilization component in this embodiment can be powered by a built-in lithium battery, that is, a lithium battery for power supply can be installed on the control circuit board 7. Of course, a battery compartment can also be installed on the control circuit board 7 or the prism compartment 16, and a cylindrical replaceable battery can be installed in the battery compartment to power the various components.

[0034] In practice, the prism compartment 16 is located between the objective lens 18 and the eyepiece 17 of the telescope, such as... Figure 3 As shown. When the telescope shakes, the gyroscope detects the shaking information, and the control circuit board 7 determines the target amount that the prism assembly 13 needs to move based on the shaking information. At the same time, the external Hall element and the internal Hall element detect the swing data of the prism assembly 13. The control circuit board 7 uses this data as feedback quantity to obtain the driving quantity of the driving magnet 3 through a feedback control algorithm. Based on this information, the external driving coil and the internal driving coil 10 are turned on, so that a relative offset is generated between the external driving coil and the driving magnet 3, and between the internal driving coil 10 and the driving magnet 3. The prism assembly 13 can swing left and right and up and down, thus canceling the field of view shaking of the binocular telescope caused by shaking and realizing the image stabilization function.

[0035] In this embodiment, the prism stabilization component uses independent magnets for driving and detecting the prism, which reduces mutual interference between signals, lowers the output noise of the Hall element, and improves the stabilization accuracy of the device.

[0036] It should be noted that all features disclosed in this specification, or all steps in all methods or processes disclosed, may be combined in any way, except for mutually exclusive features and / or steps.

[0037] Furthermore, the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this utility model, and these solutions all fall within the scope of this utility model and its protection. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and not intended to limit the scope of the claims. The scope of protection of this utility model is defined by the claims and their equivalents.

Claims

1. A prism image stabilization assembly, installed inside a prism compartment (16), characterized in that, include: The control circuit board (7), the rotating frame (1) that can swing left and right and is installed in the prism compartment (16), and the prism assembly (13) that can swing up and down and is installed in the rotating frame (1). The rotating frame (1) is provided with a driving magnet (3) and a sensing magnet (6); the control circuit board (7) is provided with a gyroscope, an external driving coil that is vertically opposite to the driving magnet (3), and an external Hall element that is vertically opposite to the sensing magnet (6); the prism assembly (13) is provided with an inner shaft circuit board (12), the inner shaft circuit board (12) is provided with an inner driving coil (10) that is vertically opposite to the driving magnet (3) and an inner Hall element (11) that is vertically opposite to the sensing magnet (6), and the inner shaft circuit board (12) is electrically connected to the control circuit board (7).

2. The prism image stabilization assembly according to claim 1, characterized in that, The control circuit board (7) is fixed inside the prism compartment (16). The upper end of the rotating frame (1) is rotatably connected to the control circuit board (7), and the lower end of the rotating frame (1) is rotatably connected to the bottom of the prism compartment (16).

3. The prism image stabilization assembly according to claim 2, characterized in that, An upper outer bearing (5) is mounted on the control circuit board (7) via a mounting shaft. An upper outer bearing mounting groove (4) is provided on the top of the rotating frame (1). A lower outer bearing is mounted on the bottom of the rotating frame (1) via a mounting shaft. A lower outer bearing mounting groove is provided on the bottom of the prism compartment (16). The upper outer bearing (5) is installed in the upper outer bearing mounting groove (4), and the lower outer bearing is installed in the lower outer bearing mounting groove.

4. The prism image stabilization assembly according to claim 1, characterized in that, The left and right side walls of the rotating frame (1) are respectively provided with inner bearing mounting grooves (2), and the left and right sides of the prism assembly (13) are respectively equipped with inner bearings (14) through mounting shafts. The two inner bearings (14) are respectively installed in the two inner bearing mounting grooves (2).

5. The prism image stabilization assembly according to any one of claims 1-4, characterized in that, The top of the rotating frame (1) is provided with a first limiting block (8), and the control circuit board (7) is provided with a second limiting block; when the rotating frame (1) swings left and right, the first limiting block (8) can abut against the second limiting block to limit the swing angle of the rotating frame (1).

6. The prism image stabilization assembly according to claim 1, characterized in that, The inner shaft circuit board (12) and the control circuit board (7) are connected by a flexible ribbon cable (15).

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