Lens image stabilization unit and image stabilization telescope

Abstract

To provide highly reliable lens image stabilization units and image-stabilized telescopes. [Solution] The lens vibration isolation unit comprises a position limiting cover and a lens vibration isolation structure mounted inside the position limiting cover. The position limiting cover comprises a bottom cover 20 and an end cover 10 connected to the bottom cover, and both the bottom cover and the end cover are provided with through holes corresponding to the position of the vibration isolation lens in the lens vibration isolation structure. The lens vibration isolation structure comprises a main control circuit board 45 and a movable unit 41 to which a vibration isolation lens 47 is attached. The main control circuit board is fixedly connected to the bottom cover and is provided with through holes corresponding to the vibration isolation lens. The movable unit is connected to the bottom cover via a tension spring 30 so as to separate the movable unit from the main control circuit board and so as to allow the movable unit to move relative to the main control circuit board. The vibration-isolating telescope has the advantages of high vibration isolation accuracy, compact size, and excellent cost performance, as it is equipped with a lens vibration isolation unit.

Description

Technical Field

[0001] The present invention relates to the technical field of image anti-vibration, and specifically to a lens anti-vibration unit and an anti-vibration telescope.

Background Art

[0002] To solve the influence of telescope shake on the field of view, the applicant proposed the technology of Chinese Utility Model Registration Application No. 202422082380X. This technology discloses an anti-vibration unit shown in FIG. 1. Specifically, the anti-vibration unit includes a circuit board and a movable mounting plate connected to each other via a tension spring, and a lens is mounted on the movable mounting plate. The anti-vibration unit controls the offset of the movable mounting plate based on the detection information of the detection element thereon, thereby removing the influence of telescope shake on the field of view. Furthermore, this technology limits the offset width of the movable mounting plate by a position-limiting screw to prevent the influence on normal use due to an excessive movable range.

[0003] However, the applicant found that there are certain drawbacks in the above technology. Specifically, it is as follows.

[0004] (1) During installation, when the position-limiting screw is screwed into the movable mounting plate, the movable mounting plate is likely to undergo minute deformation, resulting in a decrease in optical performance.

[0005] (2) This anti-vibration unit is mounted inside the telescope, as shown in FIG. 2. In addition to electronic components being mounted on the back surface of the circuit board, the nuts of the screws also protrude from the back surface of the circuit board, that is, the back surface of the circuit board is uneven. Therefore, when assembling the anti-vibration unit into the telescope, inclination is likely to occur, and the anti-vibration error is enlarged.

[0006] (3) Because the circuit board is located behind the movable mounting plate, when inserting the vibration isolation unit from the front of the telescope tube, the mounting tool cannot grip the circuit board located at the rear, and can only grip the movable mounting plate located at the front. Since a lens is attached to the movable plate, there is a risk of damaging the lens when gripping the movable plate.

[0007] To solve the above problems, the applicant again proposes a lens image stabilization unit and an image stabilization telescope. [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] To solve the aforementioned technical problems, this invention proposes a more reliable lens vibration isolation unit and vibration-isolating telescope. [Means for solving the problem]

[0009] This invention is realized by the following technical solution. A lens vibration isolation unit comprising a position limiting cover and a lens vibration isolation structure mounted within the position limiting cover, wherein the position limiting cover comprises a bottom cover and an end cover connected to the bottom cover, and both the bottom cover and the end cover are provided with through holes corresponding to the positions of the vibration isolation lens in the lens vibration isolation structure.

[0010] The lens vibration isolation structure comprises a main control circuit board and a movable unit to which a vibration isolation lens is attached. The main control circuit board is fixedly connected to a bottom cover and has a through hole corresponding to the vibration isolation lens. The movable unit is connected to the bottom cover via a tension spring so as to separate the movable unit from the main control circuit board and allow the movable unit to move relative to the main control circuit board.

[0011] The movable unit is equipped with two orthogonally arranged drive magnets and two orthogonally arranged sensing magnets. The main control circuit board is equipped with a gyroscope, two drive coils, and two Hall sensors. The two drive coils correspond one-to-one in position to the two drive magnets and drive the movable unit to move up, down, left, and right relative to the main control circuit board. The two Hall sensors correspond one-to-one in position to the two sensing magnets.

[0012] Furthermore, multiple support columns are installed in the circumferential direction on the bottom cover, and the end cover is connected to the bottom cover via the support columns. The lens vibration isolation structure is mounted within the mounting area enclosed by all the support columns.

[0013] A projection is provided on the end face of the bottom cover.

[0014] At least three balls are attached to the movable unit, and at least a portion of the balls protrudes from the movable unit so as to isolate the movable unit from the main control circuit board.

[0015] An image-stabilized telescope, comprising the aforementioned lens image stabilization unit.

[0016] The image-stabilized telescope comprises a telescope housing, an objective lens mounted inside the telescope housing, a lens image stabilization unit, a prism, an eyepiece, a telescope circuit board, and a battery. The objective lens, the image stabilization lens of the lens image stabilization unit, the prism, and the eyepiece form an optical path, and the main control circuit board and battery of the lens image stabilization unit are both electrically connected to the telescope circuit board.

[0017] The aforementioned telescope circuit board is equipped with a charging connector and a switch.

[0018] The aforementioned image-stabilized telescope is either a Porro prism type or a roof prism type telescope.

[0019] The battery is a replaceable cylindrical battery.

Advantages of the Invention

[0020] Compared with the prior art, the present invention has the following beneficial effects.

[0021] (1) In the lens anti-vibration unit of the present invention, the lens anti-vibration structure is installed inside the position-limiting cover, and the movable unit is position-limited and protected by the support pillars of the position-limiting cover. Compared with the conventional method using position-limiting screws, it does not cause deformation of the movable unit and guarantees the optical performance.

[0022] (2) In the lens anti-vibration unit of the present invention, a protrusion is provided on the end face of the bottom cover. When the lens anti-vibration unit is installed in the telescope, the protrusion fits with the locking groove in the telescope housing, thereby fixing the lens anti-vibration unit, preventing the inclination of the lens anti-vibration unit, and ensuring the anti-vibration accuracy.

[0023] (3) In the lens anti-vibration unit of the present invention, since the lens anti-vibration structure is protected by the position-limiting cover, damage to the anti-vibration lens is avoided when the lens anti-vibration unit is installed.

Brief Description of the Drawings

[0024] These attached drawings are provided to deepen the understanding of the present invention and constitute a part of the present invention. The exemplary embodiments and descriptions thereof of the present invention interpret the present invention and do not limit the present invention. The same reference numerals denote the same members in each figure. [Figure 1] It is a structural diagram of an anti-vibration unit in the prior art. [Figure 2] It is a schematic diagram showing the position of the anti-vibration unit in the telescope in the prior art. [Figure 3] It is a structural diagram of a lens anti-vibration unit according to the present invention. [Figure 4] It is an exploded view of a lens anti-vibration unit according to the present invention. [Figure 5] It is a cross-sectional view of an anti-vibration telescope according to the present invention. [Modes for carrying out the invention]

[0025] To enable those skilled in the art to better understand the present invention, the technical methods relating to embodiments of the present invention will be clearly and completely described below with reference to the drawings relating to embodiments of the present invention. Clearly, the embodiments described are only a subset of the present invention, not all embodiments. Any other embodiments that can be obtained by those skilled in the art based on embodiments of the present invention without requiring special inventive ability are all within the scope of protection of the present invention.

[0026] It should be noted that when terms such as "first," "second," etc., are used in the specification, claims, and drawings of this invention, they are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. The numbers used in this manner are interchangeable in appropriate contexts and are intended to enable the implementation of the embodiments of this invention described herein. Furthermore, "includes," "has," and any variations thereof are intended to be non-exclusive. For example, a process, method, system, product, or apparatus including a series of steps or units is not limited to the explicitly listed steps or units and may include other steps or units not explicitly listed or specific to these processes, methods, products, or apparatus.

[0027] In this invention, when terms such as "up," "down," "left," "right," "front," "back," "top," "bottom," "inside," "outside," "center," "vertical," "horizontal," "lateral," and "vertical" are used, the directions or positional relationships they refer to are based on the directions or positional relationships shown in the drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and do not limit the shown devices, elements, or components to having a specific direction or being configured or operating in a specific direction.

[0028] Furthermore, some of the above terms may have meanings other than indicating direction or positional relationships. For example, the term "above" may, depending on the context, indicate a subordinate or connecting relationship. A person skilled in the art will be able to understand the specific meaning of these terms in this invention depending on the specific situation.

[0029] Furthermore, in this invention, terms such as "attachment," "installation," "equipment," "connection," "linking," and "fitting" should be interpreted broadly. For example, it may be a fixed connection, a removable connection, or an integrated structure. It may be a mechanical connection or an electrical connection. It may be a direct connection, an indirect connection via an intermediate medium, or internal communication between two devices, elements, or components. Those skilled in the art will be able to understand the specific meaning of the above terms depending on the specific situation.

[0030] It should be noted that, insofar as they do not contradict each other, the embodiments and features of this invention can be combined with each other. The present invention will now be described in detail with reference to the drawings and the accompanying embodiments.

[0031] Example 1 As shown in Figures 3 and 4, this embodiment discloses a lens vibration isolation unit comprising a position limiting cover and a lens vibration isolation structure 40 mounted inside the position limiting cover.

[0032] The position limiting cover comprises a bottom cover 20 and an end cover 10 connected to the bottom cover 20. Both the bottom cover 20 and the end cover 10 are provided with through holes corresponding to the position of the vibration-damping lens 47 in the lens vibration-damping structure 40. Therefore, the bottom cover 20 and the end cover 10 do not obstruct the vibration-damping lens 47 of the lens vibration-damping structure 40.

[0033] Specifically, the bottom cover 20 has multiple support columns 21 installed in the circumferential direction, and the end cover 10 is attached to the support columns 21 by screws. This allows the end cover 10 to be connected to the bottom cover 20 via the support columns 21. As shown in Figure 1, the lens vibration isolation structure 40 is mounted within a mounting area surrounded by all the support columns 21. In this way, the entire lens vibration isolation structure 40 is protected inside the position limiting cover.

[0034] Furthermore, a projection 22 is provided on the end face of the bottom cover 20. This projection 22 can be fitted into a locking groove inside the telescope housing, thereby enabling the lens vibration damping structure 40 to be stably mounted inside the telescope and ensuring vibration damping accuracy.

[0035] As shown in Figure 4, the lens vibration isolation structure 40 comprises a main control circuit board 45 and a movable unit 41. A vibration isolation lens 47 is attached to the movable unit 41, and the main control circuit board 45 is provided with a through hole corresponding to the vibration isolation lens 47. When installed, the main control circuit board 45 is fixedly mounted inside the bottom cover 20, and the movable unit 41 is connected to the bottom cover 20 via a plurality of tension springs 30. Specifically, when installing, a plurality of tension spring relief grooves are provided in the main control circuit board 45, allowing one end of the tension spring 30 to be connected to the bottom cover 20, and the other end to be connected to the movable unit 41 after passing through the tension spring relief groove. The support of the tension springs 30 separates the movable unit 41 from the main control circuit board 45, and the flexibility of the tension springs 30 allows the movable unit 41 to move relative to the main control circuit board 45 under the action of an external force.

[0036] The movable unit 41 is supported by a movable mounting plate on which two orthogonally arranged drive magnets 42 and two orthogonally arranged sensing magnets 46 are mounted. The main control circuit board 45 is equipped with a gyroscope 48, two drive coils 49 and two Hall sensors 44. The two drive coils are positioned one-to-one opposite the two drive magnets 42 and drive the movable unit 41 to move up, down, left, and right relative to the main control circuit board 45. The two Hall sensors 44 are positioned one-to-one opposite the two sensing magnets 46.

[0037] With the above configuration, one drive coil 49 and the opposing drive magnet 42 form a drive structure in one direction (e.g., left-right direction), allowing the movable unit 41 to be driven to move in the left-right direction. The other drive coil 49 and the opposing drive magnet 42 form a drive structure in the other direction (e.g., up-down direction), allowing the movable unit 41 to be driven to move in the up-down direction. The two Hall sensors 44 are each for detecting movement information of the two sensing magnets 46. When the movable unit 41 moves, the two sensing magnets 46 above it also move in accordance, and the two Hall sensors 44 detect the left-right and up-down movement information of the movable unit 41, respectively, and also acquire movement information of the vibration-damping lens 47.

[0038] The main control circuit board 45 acquires detection information from the Hall sensor 44 and the gyroscope 48, controls the operation of the two drive coils 49 based on the acquired information, and can further control the movement of the movable unit 41.

[0039] Furthermore, at least three balls 43 are attached to the movable unit 41. At least a portion of the balls 43 protrudes from the movable unit 41 so as to isolate the movable unit 41 from the main control circuit board 45. The rolling characteristics of the balls 43 allow the movable unit 41 to move more stably.

[0040] In this embodiment, the lens vibration isolation unit has a lens vibration isolation structure 40 installed inside a position limiting cover, and the movable unit 41 is limited in position and protected by the support column 21 of the position limiting cover. Compared to the conventional position limiting method using position limiting screws, this does not cause deformation of the movable unit and guarantees optical performance.

[0041] Example 2 As shown in Figure 5, this embodiment discloses an image-stabilized telescope comprising a telescope housing 60, an objective lens 70 mounted inside the telescope housing 60, a lens image stabilization unit 50 from Embodiment 1, a prism 110, an eyepiece 120, a telescope circuit board 90, and a battery 130. The objective lens 70, the lens image stabilization unit 50, the prism 110, and the eyepiece 120 are arranged in order from the front to the rear of the telescope. As a result, the objective lens 70, the image stabilization lens 47 of the lens image stabilization unit 50, the prism 110, and the eyepiece 120 form a single optical path. The main control circuit board 45 and the battery 130 of the lens image stabilization unit 50 are both electrically connected to the telescope circuit board 90.

[0042] Specifically, the battery 130 may be a rechargeable battery. A charging connector 80 is installed on the telescope circuit board 90, and the charging connector 80 extends to the outside of the telescope housing 60 to facilitate charging the battery. Of course, a replaceable cylindrical battery can also be used as the battery 130, in which case the charging connector 80 can be omitted. Furthermore, a switch 100 is installed on the telescope circuit board 90, and the switch 100 also extends to the outside of the telescope housing 60 to facilitate control of the entire device.

[0043] A locking groove is provided inside the telescope housing 60. During installation, the projection 22 on the lens vibration damping unit 50 is fitted into the locking groove, securely fixing the lens vibration damping unit 50 inside the telescope housing 60, preventing the lens vibration damping unit 50 from tilting, and ensuring the vibration damping accuracy of the vibration-damped telescope.

[0044] Since the lens vibration isolation structure 40 is protected within the position limiting cover, when inserting the lens vibration isolation unit 50 from the front end of the telescope housing 60, the position limiting cover can be clamped with the mounting tool, thus avoiding damage to the vibration isolation lens 47 on the movable unit 41 caused by the mounting tool directly clamping the movable unit 41.

[0045] If shaking occurs while using the image-stabilized telescope, the gyroscope 48 detects the shaking information, and the main control circuit board 45 calculates the target amount by which the image-stabilizing lens 47 should move based on the shaking information. At the same time, the Hall sensor detects the translation data of the movable unit 41, i.e., the movement data of the image-stabilizing lens 47. The main control circuit board 45 uses this data as feedback to execute a feedback control algorithm and obtain the drive amount of the two drive magnets 42. Furthermore, the two drive coils 49 drive the corresponding drive magnets 42 to translate, thereby moving the image-stabilizing lens 47 to cancel out the shaking of the field of view and realize an image stabilization function. When actually implemented, the image-stabilized telescope can be a Porro prism type or a roof prism type telescope.

[0046] It should be noted that all features, or all methods or steps of processes disclosed herein, can be combined in any manner except for features and / or steps that are not mutually exclusive.

[0047] Furthermore, the above-described specific embodiments are illustrative, and those skilled in the art may conceive of various solutions based on the disclosure of this invention. All of these solutions fall within the scope of disclosure of this invention and are included within the scope of protection of this invention. Those skilled in the art should understand that the specification and drawings of this invention are explanatory and do not limit the scope of the utility model registration claims. The scope of protection of this invention is determined by the utility model registration claims and their equivalents. [Explanation of symbols]

[0048] 10…End cover, 20…Bottom cover, 21…Support column, 22…Protrusion, 30…Tension spring, 40…Lens vibration isolation structure, 41…Movable unit, 42…Drive magnet, 43…Ball, 44…Hall sensor, 45…Main control circuit board, 46…Sensing magnet, 47…Vibration isolation lens, 48…Gyroscope, 49…Drive coil, 50…Lens vibration isolation unit, 60…Telescope housing, 70…Objective lens, 80…Charging connector, 90…Telescope circuit board, 100…Switch, 110…Prism, 120…Eyepiece, 130…Battery

Claims

1. A lens vibration isolation unit comprising a position limiting cover and a lens vibration isolation structure (40) mounted inside the position limiting cover, The position limiting cover comprises a bottom cover (20) and an end cover (10) connected to the bottom cover (20), and both the bottom cover (20) and the end cover (10) are provided with through holes corresponding to the position of the vibration-damping lens (47) in the lens vibration-damping structure (40). The lens vibration isolation structure (40) comprises a main control circuit board (45) and a movable unit (41) to which a vibration isolation lens (47) is attached. The main control circuit board (45) is fixedly connected to the bottom cover (20) and is provided with a through hole corresponding to the vibration-damping lens (47). The movable unit (41) is connected to the bottom cover (20) via a tension spring (30) so as to separate the movable unit (41) from the main control circuit board (45) and allow the movable unit (41) to move relative to the main control circuit board (45). The movable unit (41) is equipped with two orthogonally arranged drive magnets (42) and two orthogonally arranged sensing magnets (46). The main control circuit board (45) is equipped with a gyroscope (48), two drive coils (49), and two Hall sensors (44). The two drive coils (49) are in a one-to-one correspondence with the two drive magnets (42) and drive the movable unit (41) to move up, down, left, and right relative to the main control circuit board (45), and the two Hall sensors (44) are in a one-to-one correspondence with the two sensing magnets (46) A lens vibration isolation unit characterized by the following features.

2. Multiple support columns (21) are installed in the circumferential direction on the bottom cover (20), the end cover (10) is connected to the bottom cover (20) via the support columns (21), and the lens vibration isolation structure (40) is mounted within the mounting area surrounded by all the support columns (21). The lens vibration isolation unit according to feature 1.

3. A projection (22) is provided on the end face of the bottom cover (20). The lens vibration isolation unit according to feature 1.

4. At least three balls (43) are attached to the movable unit (41), and at least a portion of the balls (43) protrudes from the movable unit (41) so as to isolate the movable unit (41) from the main control circuit board (45) by the balls (43). The lens vibration isolation unit according to feature 1.

5. An image-stabilized telescope, characterized by comprising a lens image stabilization unit (50) according to any one of claims 1 to 4.

6. The telescope comprises a telescope housing (60), an objective lens (70) mounted inside the telescope housing (60), a lens vibration isolation unit (50), a prism (110), an eyepiece (120), a telescope circuit board (90), and a battery (130). The objective lens (70), the vibration-damping lens (47) of the lens vibration-damping unit (50), the prism (110), and the eyepiece lens (120) form a single optical path. The main control circuit board (45) and battery (130) of the lens vibration isolation unit (50) are both electrically connected to the telescope circuit board (90). The vibration-damping telescope according to feature 5.

7. The image-stabilized telescope according to claim 6, characterized in that a charging connector (80) and a switch (100) are installed on the telescope circuit board (90).

8. The image-stabilized telescope according to claim 5, characterized in that the image-stabilized telescope is a Porro prism type or a roof prism type telescope.

9. The image-stabilizing telescope according to claim 6, characterized in that the battery (130) is a replaceable cylindrical battery.

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