Adjusting mechanism of flat field lens assembly and telescope

Abstract

The invention relates to the technical field of lens adjustment, in particular to an adjusting mechanism of a flat field lens assembly and a telescope, which are used for performing multi-dimensional adjustment on a flat field lens and comprise a limiting shell, an adjusting ring, an arc-shaped rack, a rolling piece, a mounting piece, a swing assembly, a swing knob, a temperature sensor and a microcontroller. The temperature sensor is used for monitoring the environment temperature and the internal temperature of the telescope in real time and transmitting the collected temperature data to the microcontroller in the form of an electric signal. Compared with a traditional method, according to the technical scheme, the temperature is monitored in real time through the temperature sensor, a control instruction is rapidly judged and sent out through the microcontroller, the corresponding drivers and the adjusting components can be rapidly driven to adjust the angle of the flat-field lens, the adjusting action can be completed in a short time, and the adjustment efficiency is improved. The system can better adapt to scenes such as observation from daytime to night, rapid change of different environment temperatures and the like, and can maintain good imaging quality in time.

Description

Technical Field

[0001] The invention relates to the technical field of lens adjustment, and in particular to an adjustment mechanism of a field flattening lens assembly and a telescope. Background Art

[0002] The basic optical structure of a telescope includes the objective lens for collecting light and the eyepiece for human eye observation. However, in order to obtain high-quality images, especially to solve problems such as the curvature of the imaging plane, the field flattening lens assembly plays an indispensable role. It is located in the optical transmission path of the telescope, usually at a suitable position behind the objective lens and in front of the eyepiece. It corrects the light after the initial imaging of the objective lens, and then transmits the light to the eyepiece or subsequent detectors and other components. Due to changes in ambient temperature, optical components will cause deformations such as thermal expansion and contraction, affecting their relative position and optical performance. At this time, it is necessary to adjust the field flattening lens to compensate for the influence of temperature and maintain good imaging quality.

[0003] In traditional solutions, the characteristics of different optical materials are generally utilized to achieve adaptive adjustment of the imaging performance of the telescope under different temperature conditions through different temperature refracting materials, but many problems have also arisen during use.

[0004] On the one hand, the use of the thermorefractive properties of different optical materials to adjust imaging performance is essentially dependent on the gradual change of the material's own physical properties with temperature. This process is relatively slow, and is not timely enough in some situations where the observation environment needs to be switched quickly. On the other hand, the adjustment effect of the scheme that relies on the thermorefractive properties of optical materials to adjust imaging performance is often limited by the inherent properties of the material itself. The material's response to temperature is usually a relatively fixed pattern of optical parameter change, and the imaging can only be adjusted within the range limited by the material's own characteristics. The correction capability for some special angles and complex optical path deviations is relatively weak. Summary of the invention

[0005] In order to overcome the above technical problems, the purpose of the present invention is to provide an adjustment mechanism of a flat field mirror assembly and a telescope, which solves the current problem that the flat field mirror cannot be quickly and accurately adjusted in response to changes in ambient temperature, thereby affecting the final imaging quality.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] An adjustment mechanism of a field flattening lens assembly is used for adjusting the field flattening lens in multiple dimensions, comprising a limit housing, an adjustment ring, an arc-shaped rack, a rolling element, a mounting element, a swing assembly, a swing knob, a temperature sensor and a microcontroller;

[0008] The temperature sensor is used to monitor the ambient temperature and the internal temperature of the telescope in real time, and transmit the collected temperature data to the microcontroller in the form of an electrical signal;

[0009] The microcontroller receives the temperature signal from the temperature sensor, determines whether the angle of the flat field lens needs to be adjusted and the amplitude of the adjustment, and sends corresponding control instructions to the driver;

[0010] The limiting shell is used to carry the field flattening lens, the limiting shell is coaxially mounted inside the adjusting ring, the adjusting ring is coaxially mounted inside the arc-shaped rack, the limiting shell and the adjusting ring, as well as the adjusting ring and the arc-shaped rack are rotationally connected through the driver, and the rotation axis of the limiting shell and the rotation axis of the adjusting ring are vertically crossed in space;

[0011] The rolling element is used to cooperate with the arc-shaped rack and drive the arc-shaped rack to perform circular motion under the action of the driver;

[0012] The mounting member is used to link the rolling member and the swinging assembly. The swinging assembly controls the rolling member to perform a reciprocating swinging motion after being driven by the swinging knob.

[0013] In some embodiments of the present invention, the limiting shell includes limiting rings that are arranged in mirror symmetry, the flat field lens is constrained and placed between two limiting rings, and an avoidance gap is formed on the outer circumference of the limiting ring corresponding to the position of the driver.

[0014] In some embodiments of the present invention, inner circumferences of the opposing surfaces of the two limiting rings are formed with concave step grooves, and a plurality of elastic convex columns are arranged at intervals on the surface of the step groove, and the elastic convex columns are conical columns.

[0015] In some embodiments of the present invention, the driver driving the limit shell to rotate is defined as driver one, and rotation shafts one are inserted at positions corresponding to the avoidance gaps on both sides of the adjustment ring that are mirror-symmetrical, one end of the two rotation shafts one radially penetrates the adjustment ring and is connected to an elastic limit strip, and the other end of at least one rotation shaft one is drivingly connected to the output shaft of the driver one;

[0016] A plurality of elastic limiting blocks are arranged at intervals on the surface of the avoidance notch. After the two limiting rings are combined together, a limiting seam for limiting and fixing the elastic limiting strip is formed between the elastic limiting blocks on both sides.

[0017] In some embodiments of the present invention, the driver for driving the adjustment ring to rotate is defined as the second driver. Rotating shafts II are inserted at positions corresponding to the avoidance notches on both sides of the arc-shaped rack that are mirror-symmetrical. One end of each of the two rotating shafts II sequentially penetrates the arc-shaped rack and the adjustment ring in the radial direction. A washer is also sleeved on the shaft body of the rotating shaft II at the position between the arc-shaped rack and the adjustment ring. The other end of at least one rotating shaft II is in transmission connection with the output shaft of the second driver.

[0018] In some embodiments of the present invention, the rolling member includes a fixed block. A rolling channel for accommodating the rolling of the arc-shaped rack is formed on the surface of the fixed block. A gear is rotatably arranged inside the fixed block corresponding to the rolling channel. The gear is in transmission connection with the output shaft of the third driver through a transmission shaft. During the process of the arc-shaped rack rolling and inserting into the rolling channel, it is meshed with the gear. A stop strip for limiting the rolling track of the arc-shaped rack is also formed on the edge of the rolling channel.

[0019] In some embodiments of the present invention, the mounting member includes a mounting plate and limiting blocks located on both sides of the mounting plate. The mounting plate is detachably connected to the rolling member by screws.

[0020] In some embodiments of the present invention, the swing assembly includes a bracket. The side surface of the bracket has a "C"-shaped structure, that is, the bracket includes an opening part and a closed part.

[0021] A rotating rod and a sliding rod are vertically arranged at the opening part of the bracket. The rotating rod and the sliding rod are arranged at intervals. Both ends of the rotating rod are respectively rotatably connected to the top and bottom of the opening part. A turntable is rotatably arranged at the closed part of the bracket. The turntable is connected to the swing knob through a connecting shaft.

[0022] A connecting column is fixedly sleeved in the middle of the rod body of the rotating rod. The connecting column is detachably connected to the mounting plate.

[0023] One end of each of two connecting rods is fixedly connected to both ends of the rod body of the rotating rod. The other ends of the two connecting rods are respectively rotatably connected to both ends of the sliding rod. A slider is slidably sleeved on the rod body of the sliding rod. An insertion rod is arranged on the side of the slider facing the turntable. A slot is opened on the surface of the turntable corresponding to the insertion rod.

[0024] In some embodiments of the present invention, one end of the connecting column facing the mounting plate is connected with a mounting disc. An installation groove is opened on the surface of the mounting plate. The size of the mounting disc matches that of the installation groove. The end of the screw is connected with a pressing block. When the screw is completely screwed into the mounting plate, the pressing block will cover the edge of the installation groove and generate a limiting constraint on the mounting disc.

[0025] A telescope comprises a lens barrel, an eyepiece and an objective lens at two ends of the lens barrel, and a flat field lens inside the lens barrel. A support frame is also connected below the lens barrel. The flat field lens is regulated and controlled by the above-mentioned regulating mechanism.

[0026] Beneficial effects of the present invention:

[0027] Compared with the traditional method, the present technical solution adopts a temperature sensor to monitor the temperature in real time, and uses a microcontroller to quickly judge and issue control instructions, which can quickly drive the corresponding driver and various adjustment components to adjust the angle of the flat field lens, and can complete the adjustment action in a short time, so as to better adapt to scenes such as observation from day to night and rapid changes in different ambient temperatures, and maintain good imaging quality in time; not only that, the present technical solution also designs a swing component controlled by manual operation, which can adjust the imaging effect in real time and intuitively by manually controlling the flat field lens to swing slightly according to the actual imaging quality. The observer can flexibly change the swing angle of the flat field lens based on the imaging conditions he sees, such as image clarity, contrast, and the presence or absence of ghosting, and try to find the position that makes the imaging reach the best state, so as to make up for the possible limitations of the automatic adjustment system and optimize the imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 is a stereoscopic view of the telescope in the present invention;

[0030] Figure 2 is a top view of the adjustment mechanism of the present invention;

[0031] Figure 3 is a three-dimensional view of the adjustment mechanism of the present invention;

[0032] Figure 4 It is a three-dimensional view of the limit housing, the adjustment ring and the arc-shaped rack in the present invention;

[0033] Figure 5 It is a three-dimensional view of the limiting shell in the present invention;

[0034] Figure 6 is a three-dimensional view of the limiting ring in the present invention;

[0035] Figure 7 It is a three-dimensional view of the rotating shaft 1, the driver 1 and the elastic limiting strip in the present invention;

[0036] Figure 8 is a three-dimensional view of a rolling element in the present invention;

[0037] Fig. 9 is a cross-sectional view of a rolling element in the present invention;

[0038] Fig.10 is a side view of the mounting member, the swing assembly and the swing knob of the present invention;

[0039] Fig.11 is a three-dimensional view of the mounting member, the swing assembly and the swing knob of the present invention;

[0040] Fig.12 It is a three-dimensional view of the swing assembly and the swing knob in the present invention.

[0041] In the figure: 1, flat field lens; 2, limit shell; 21, limit ring; 22, avoidance gap; 23, elastic limit block; 24, limit seam; 25, step groove; 26, elastic convex column; 3, adjustment ring; 31, rotating shaft 1; 32, driver 1; 33, elastic limit strip; 4, arc rack; 41, rotating shaft 2; 42, gasket; 43, driver 2; 5, rolling element; 51, fixed block; 52, rolling channel; 53, stop bar; 54, gear; 5 5. Drive shaft; 56. Driver three; 6. Mounting parts; 61. Mounting plate; 62. Limit block; 63. Screw; 64. Pressure block; 65. Mounting slot; 7. Swing assembly; 71. Bracket; 72. Connecting shaft; 73. Turntable; 74. Turntable; 75. Connecting rod; 76. Slide bar; 77. Sliding block; 78. Insert rod; 79. Connecting column; 791. Mounting plate; 8. Swing knob; 9. Lens barrel; 91. Eyepiece; 92. Objective lens; 93. Support frame. DETAILED DESCRIPTION

[0042] The following will be combined with 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.

[0043] The adjustment mechanism of the field flattening mirror assembly and the telescope according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0044] like Figure 2 , Figure 3 The figure shows a top view and a stereoscopic view of an adjustment mechanism of a field flattening lens assembly in the present invention, which is used to perform multi-dimensional adjustment on a field flattening lens 1, and includes a limit housing 2, an adjustment ring 3, an arc-shaped rack 4, a rolling member 5, a mounting member 6, a swinging assembly 7, a swinging knob 8, a temperature sensor and a microcontroller.

[0045] The temperature sensor is used to monitor the ambient temperature and the temperature inside the telescope in real time, and transmit the collected temperature data to the microcontroller in the form of electrical signals; the microcontroller receives the temperature signal from the temperature sensor, determines whether it is necessary to adjust the angle of the flattening lens 1 and the adjustment amplitude information, and accurately sends control instructions to each driver to achieve intelligent and precise control of the entire adjustment process, so that each component works in a coordinated and orderly manner to optimize the imaging quality.

[0046] The limiting shell 2 is used to carry the flat field lens 1. The limiting shell 2 is coaxially installed inside the adjusting ring 3. The adjusting ring 3 is coaxially installed inside the arc-shaped rack 4. The limiting shell 2 and the adjusting ring 3 as well as the adjusting ring 3 and the arc-shaped rack 4 are rotationally connected through a driver, and the rotation axis of the limiting shell 2 and the rotation axis of the adjusting ring 3 are vertically crossed in space; the rolling member 5 is used to cooperate with the arc-shaped rack 4 and drive the arc-shaped rack 4 to perform circular motion under the action of the driver; the mounting member 6 is used to link the rolling member 5 and the swinging assembly 7. After being driven by the swinging knob 8, the swinging assembly 7 controls the rolling member 5 to perform a reciprocating swinging motion.

[0047] When the adjustment mechanism of the present invention is used, it is first necessary to monitor and judge the temperature. The temperature sensor monitors the ambient temperature and the internal temperature of the telescope in real time, and transmits the collected temperature data to the microcontroller in the form of an electrical signal. The microcontroller has a built-in corresponding temperature threshold and adjustment algorithm program, analyzes and compares the received temperature signal, and judges whether the current temperature change has reached the degree that the flat field lens 1 needs to be adjusted in angle. If the threshold is not reached, the system maintains the current state and waits for the next temperature monitoring data; if the temperature change exceeds the threshold, the adjustment process is entered. In the adjustment process, the microcontroller calculates the parameters such as the angle and direction that the limit shell 2, the adjustment ring 3, the arc rack 4 and other components need to rotate respectively according to the temperature change and the preset algorithm, and sends corresponding control instructions to the corresponding drivers, including driver one 32, driver two 43, and driver three 56, to achieve multi-dimensional and high-precision adjustment of the flat field lens 1. In addition, the swing assembly 7 in the adjustment mechanism can drive the arc-shaped rack 4, the adjustment ring 3, the limit shell 2 and other components connected thereto to produce corresponding small-amplitude swings, thereby realizing fine manual adjustment of the angle of the flat-field lens 1. The observer can adjust the swing knob 8 in real time according to the actual imaging effect, such as clarity, uniformity, etc., until satisfactory imaging quality is obtained, so as to supplement the imaging optimization problems that may not be completely solved by automatic adjustment, or to deal with some temporary special optical path deviations.

[0048] It should be noted that the temperature sensor in the present invention serves as an information acquisition terminal, which transmits the real-time monitored temperature data in the form of electrical signals to the microcontroller. The microcontroller serves as the control core and analyzes and processes the received temperature signals. The two are connected through an electrical signal transmission line, forming an upstream and downstream relationship of information transmission, which is the starting link for starting and making decisions on the adjustment actions in the entire adjustment structure.

[0049] In some embodiments of the present invention, Figure 4 , Figure 5 , Figure 6 As shown, the limiting housing 2 includes limiting rings 21 arranged in mirror symmetry, and a flattening lens 1 is constrained and placed between two limiting rings 21. The limiting rings 21 arranged in mirror symmetry constrain the flattening lens 1, which can not only stably fix the flattening lens 1 to avoid unnecessary displacement during the adjustment process, ensure its relatively accurate position in the telescope optical system, but also facilitate the installation and removal of the flattening lens 1, and facilitate the maintenance or replacement of the lens.

[0050] As an example, a clearance gap 22 is formed at the position of the driver corresponding to the outer circumference of the limiting ring 21. The clearance gap 22 is formed at the position of the driver corresponding to the outer circumference, providing space for the connection and transmission between the driver and other components, such as the rotating shaft, the elastic limiting strip 33, etc., to avoid conflict when the limiting shell 2 and the adjusting ring 3 rotate.

[0051] In some embodiments of the present invention, Figure 6 As shown, the inner circumferences of the opposing surfaces of the two limiting rings 21 are both formed with concave step grooves 25, and a plurality of elastic convex columns 26 are arranged at intervals on the surface of the step grooves 25, and the elastic convex columns 26 are conical columns. The size of the step groove 25 on the inner circumference of the limiting ring 21 matches the size of the field flattening lens 1. When the two limiting rings 21 are combined together, the space formed by the two step grooves 25 forms an accurate storage and constraint for the field flattening lens 1. The design of the plurality of conical elastic convex columns 26 on the surface of the step groove 25, on the one hand, increases the contact friction with the field flattening lens 1, making it more firmly placed in the limiting shell 2, and the elastic convex columns 26 can reduce the vibration amplitude transmitted from the outside to the field flattening lens 1, avoiding the displacement of the field flattening lens 1, thereby providing a basis for providing more accurate imaging quality; on the other hand, the conical structure can adapt to the size difference of the field flattening lens 1 due to processing tolerance to a certain extent, and better limit and fix it.

[0052] In some embodiments of the present invention, Figure 4 , Figure 5 , Figure 6 , Figure 7As shown, the driver driving the limit housing 2 to rotate is defined as a driver 1 32, and rotating shafts 1 31 are inserted at the positions corresponding to the avoidance notches 22 on both sides of the adjustment ring 3, which are mirror-symmetrical. One end of the two rotating shafts 1 31 penetrates the adjustment ring 3 in the radial direction and is connected to an elastic limit strip 33, and the other end of at least one rotating shaft 1 31 is connected to the output shaft of the driver 1 32 to provide power for the rotation of the limit housing 2. The shaft body of the rotating shaft 1 31 is sleeved with a limit pressing sheet at the outer surface of the adjusting ring 3, which limits the rotating shaft 1 31 to prevent the rotating shaft 1 31 from detaching from the adjusting ring 3.

[0053] It should be noted that a plurality of elastic stop blocks 23 are arranged at intervals on the surface of the avoidance notch 22 corresponding to the rotation axis 1 31. After the two stop rings 21 are combined together, a stop gap 24 for stopping and fixing the elastic stop strip 33 is formed between the elastic stop blocks 23 on both sides. The elastic stop strip 33 is an arc-shaped structure. Here, the closed characteristics of the two stop rings 21 are utilized. A stop gap 24 cooperating with the elastic stop strip 33 is formed between the elastic stop blocks 23 on both sides. On the one hand, the assembly problem between the field flattening lens 1, the stop shell 2 and the adjustment ring 3 is solved. On the basis of ensuring the accuracy, it can also provide better connection reliability and angle adjustment accuracy when the driver 1 32 drives the stop shell 2 to rotate, and prevent problems such as excessive rotation or loose connection. On the other hand, the elastic stop blocks 23 cooperate with the elastic stop strip 33 to achieve a better shock absorption effect, and prevent the field flattening lens 1 and the stop shell 2 from being displaced due to external vibration.

[0054] During the automatic adjustment process, after receiving the instruction from the microcontroller, the driver 32 drives the limit housing 2 to rotate a corresponding angle around the rotation axis 31, thereby changing the angular position of the flat field lens 1 in one direction. During this process, the structures such as the rotation axis 31, the elastic limit strip 33, and the elastic limit block 23 at the avoidance notch 22 work together to ensure the stability and accuracy of the rotation of the limit housing 2, so that the angle can be accurately adjusted according to the instruction, and the propagation deviation of the light in this direction caused by the temperature can be corrected.

[0055] In some embodiments of the present invention, Figure 3 , Figure 4 As shown, the driver for driving the adjustment ring 3 to rotate is defined as driver 2 43, and rotating shafts 2 41 are inserted at the positions corresponding to the avoidance notches 22 on both sides of the arc-shaped rack 4 that are mirror-symmetrical, and one end of the two rotating shafts 2 41 radially penetrates the arc-shaped rack 4 and the adjustment ring 3 in sequence, and the shaft body of the rotating shaft 2 41 is sleeved with limiting pressure plates at the outer surface of the arc-shaped rack 4 and the inner surface of the adjustment ring 3 corresponding to the outer surface of the arc-shaped rack 4 and the inner surface of the adjustment ring 3, and the limiting pressure plates limit the rotating shaft 2 41 to prevent the rotating shaft 2 41 from being separated from the arc-shaped rack 4 and the adjustment ring 3, and the other end of at least one rotating shaft 2 41 is transmission-connected to the output shaft of the driver 2 43 to provide power for the rotation of the adjustment ring 3.

[0056] As an example, a washer 42 is also provided on the shaft of the rotating shaft 41 at a position corresponding to the position between the arc-shaped rack 4 and the adjusting ring 3. The washer 42 serves to increase the distance between the arc-shaped rack 4 and the adjusting ring 3 to avoid the driver 1 32 from conflicting with the arc-shaped rack 4 when the adjusting ring 3 rotates. At the same time, it can also increase the damping feeling during the rotation of the adjusting ring 3, which is conducive to precise adjustment.

[0057] During the automatic adjustment process, after the second driver 43 receives the instruction from the microcontroller, the second driver 43 drives the adjustment ring 3 to rotate around the second rotation axis 41 according to the instruction, driving the limiting shell 2 and the flat field lens 1 to move together.

[0058] It should be noted that the axis of the second rotating shaft 41 is in a vertically intersecting state with the axis of the first rotating shaft 31. Specifically, the rotation axis of the first rotating shaft 31 and the rotation axis of the second rotating shaft 41 converge at one point, and the two are perpendicular to each other in space, and a multi-dimensional rotation basis is constructed with a rigorous and precise geometric relationship. This vertically intersecting rotation axis setting gives the limit shell 2 and the adjustment ring 3 a powerful angle adjustment capability. When the angle needs to be adjusted, the limit shell 2 is responsible for the angle change in one dimension, and the adjustment ring 3 is responsible for the angle change in another dimension perpendicular to it. The two cooperate with each other, so that the flat field lens 1 can achieve fine adjustment of the angle in multiple dimensions to cope with various needs for multi-angle adjustment in different application scenarios such as shooting and observation.

[0059] In some embodiments of the present invention, Figure 2 , Figure 3 , Figure 8 , Fig. 9 As shown, the rolling element 5 includes a fixed block 51, a rolling channel 52 for accommodating the rolling of the arc-shaped rack 4 is formed on the surface of the fixed block 51, a gear 54 is rotatably arranged inside the fixed block 51 corresponding to the rolling channel 52, and the gear 54 is connected to the output shaft of the driver 3 56 through a transmission shaft 55; the arc-shaped rack 4 is meshed with the gear 54 during the process of being inserted into the rolling channel 52 and rolling, and a retaining bar 53 for limiting the rolling trajectory of the arc-shaped rack 4 is also formed on the edge of the rolling channel 52.

[0060] During the automatic adjustment process, after the driver 3 56 receives the instruction from the microcontroller, the driver 3 56 drives the gear 54 in the rolling element 5 to rotate, and the gear 54 drives the arc-shaped rack 4 meshing therewith to make a circular motion in the rolling channel 52. When the driver 3 56 drives the gear 54 to rotate, the rolling speed and position of the arc-shaped rack 4 can be accurately controlled, and the stop bar 53 further limits the rolling track of the arc-shaped rack 4, ensuring the accuracy and stability of the entire transmission process, so that the angle adjustment can be finely operated according to the expected requirements. Through this transmission process, the power is transmitted to the adjustment ring 3 and other related components to ensure the continuity and accuracy of the angle adjustment action, so that the angle of the flat field lens 1 can be accurately adjusted to meet the requirements of optimizing the imaging quality under the current temperature conditions.

[0061] Moreover, the rolling member 5 is connected to the swing assembly 7 by means of the mounting member 6, thus realizing the power transmission and motion coordination among the multiple components, so that it plays a connecting and transmission role in the entire regulating mechanism.

[0062] In the present invention, the limiting shell 2 carries the flat field lens 1, and the microcontroller sends corresponding control instructions to each driver, including driver 1 32, driver 2 43, and driver 3 56 according to the temperature signal judgment result. After receiving the instruction, each driver drives the corresponding component, such as the driver 1 32 is connected to the adjustment ring 3 through the driver 2 43, and the adjustment ring 3 is connected to the arc rack 4 through the driver 2 43. The arc rack 4 cooperates with the rolling element 5. The rolling element 5 drives the arc rack 4 to make a circular motion under the action of the driver 3 56, thereby driving the adjustment ring 3 and the limiting shell 2 to rotate, and realizing the angle adjustment of the flat field lens 1. Through the relationship of nesting, rotation connection and transmission cooperation between these components, a mechanical transmission link for multi-dimensional angle adjustment is constructed, from power input to the final realization of the angle change of the flat field lens 1, and they cooperate with each other to complete the adjustment function. They are connected by control signal lines, the microcontroller plays a command and coordination role, and the driver is a power unit that performs specific actions, and together realizes the precise control of the angle of the flat field lens 1.

[0063] As an example, the driver uses a piezoelectric ceramic driver. The piezoelectric ceramic driver works based on the piezoelectric effect. When a voltage is applied to the piezoelectric ceramic, it will produce corresponding mechanical deformation, which can be converted into displacement or angle change to drive the connected flat-field mirror to adjust the angle. By accurately controlling the parameters such as the magnitude, direction and action time of the applied voltage, it is possible to achieve very fine and accurate adjustment of the angle of the flat-field mirror assembly, meeting the need to fine-tune the angle of the flat-field mirror in the telescope optical system to optimize the imaging quality. In addition, in a confined space environment, piezoelectric ceramic drivers are usually more advantageous. Its own structure is compact and small in size. It does not need to be equipped with additional large-volume transmission parts like motors to achieve motion transmission. It can be directly installed in a limited space and adjust the angle of the flat-field mirror assembly. Moreover, the driving method of the piezoelectric ceramic driver is relatively direct. It can achieve driving by controlling the applied voltage through reasonable circuit connection. There is no need to reserve a large space to layout a complex mechanical transmission link, which makes it more flexible and convenient in the installation layout of a small space, and easier to meet the needs of adjusting the angle of the flat-field mirror under space-constrained conditions.

[0064] In some embodiments of the present invention, Figure 2 , Figure 3 , Fig.10 , Fig.11 As shown, the mounting member 6 includes a mounting plate 61 and limit blocks 62 located on both sides of the mounting plate 61, and the mounting plate 61 is detachably connected to the fixing block 51 through screws 63. The structure of the mounting plate 61 and the limit blocks 62 on both sides, on the one hand, provides a stable mounting base for the rolling member 5, and the detachable connection achieved by the screws 63 facilitates the assembly, maintenance and replacement of the components in case of failure; on the other hand, the spacing between the two limit blocks 62 matches the height of the fixing block 51, so that when the mounting plate 61 is connected to the fixing block 51, the two limit blocks 62 produce a guiding effect, ensuring the firmness and position accuracy of the entire connection, ensuring that the relative position relationship between the components is stable during the adjustment process, and facilitating the precise adjustment of the angle of the flat field lens 1.

[0065] In some embodiments of the present invention, Figure 2 , Figure 3 , Fig.10 , Fig.11 , Fig.12As shown in the figure, the swing assembly 7 includes a bracket 71. The side surface of the bracket 71 is in a "C" - shaped structure, that is, the bracket 71 includes an opening part and a closed part. A rotating rod 74 and a sliding rod 76 are vertically arranged at the opening part of the bracket 71. The rotating rod 74 and the sliding rod 76 are arranged at intervals. The two ends of the rotating rod 74 are respectively rotatably connected to the top and bottom of the opening part. A turntable 73 is rotatably arranged at the closed part of the bracket 71. The turntable 73 is connected to the swing knob 8 through a connecting shaft 72. A connecting column 79 is fixedly sleeved in the middle of the rod body of the rotating rod 74. The connecting column 79 is detachably connected to the mounting plate 61. One end of each of two connecting rods 75 is fixedly connected to both ends of the rod body of the rotating rod 74. The other ends of the two connecting rods 75 are respectively rotatably connected to both ends of the sliding rod 76. A slider 77 is slidably sleeved on the rod body of the sliding rod 76. A plug rod 78 is arranged on the side of the slider 77 facing the turntable 73. Slots are correspondingly arranged on the surface of the turntable 73 for the plug rod 78.

[0066] In the above - mentioned swing assembly 7, the unique "C" - shaped bracket 71 structure, in cooperation with components such as the rotating rod 74, the sliding rod 76, the turntable 73, the connecting rod 75, and the slider 77, constitutes a mechanism that can convert the rotational motion of the swing knob 8 into a reciprocating cyclic swinging motion. This structure can achieve complex motion conversion, providing another swinging adjustment method for the flat - field lens 1 in addition to the conventional rotational adjustment, enriching the adjustment means, and contributing to more precisely correcting the optical path aberration, especially for some situations that require repeated fine - tuning of the angle.

[0067] When the flat - field lens 1 needs to be swing - adjusted, after rotating the swing knob 8, the connecting shaft 72 drives the turntable 73 to rotate. Then, the turntable 73 drives the slider 77 to move up and down along the sliding rod 76 through the plug rod 78. During this process, the sliding rod 76 and the connecting rod 75 will swing about the rotating rod 74, and at the same time, the rotating rod 74 rotates by a certain angle. The connecting column 79随之发生一定的摆动,同时又借助连接柱79与安装件6的连接关系,将摆动动作传递给滚动件5,与整个调节结构中的其他部件紧密配合,进而影响平场镜片1的角度,共同实现多维度、多样化的平场镜片1的调节功能。

[0068] As an example, a gearbox can also be used to replace the connecting shaft 72, thereby changing the speed ratio between the input and the output. Utilizing its reduction ratio characteristics, when the swing knob 8 rotates by a certain angle, through the transmission of the internal gear set of the gearbox, the turntable 73 rotates at a slower speed, corresponding to a smaller angle change, and the swinging amplitude of the flat - field lens 1 is also more precise, thus achieving the effect of decomposing the coarser scale input by the swing knob 8 into finer scales.

[0069] The technical solution designs a manually controlled swing component 7, which can adjust the imaging effect in real time and intuitively by manually controlling the flattening mirror to swing slightly according to the actual imaging quality. The observer can flexibly change the swing angle of the flattening mirror based on the imaging conditions he sees, such as image clarity, contrast, and the presence or absence of ghosting, and try to find the position that makes the imaging reach the best state, thereby compensating for the possible limitations of the automatic adjustment system and optimizing the imaging quality.

[0070] In some embodiments of the present invention, Fig.10 , Fig.11 , Fig.12 As shown, the end of the connecting column 79 facing the mounting plate 61 is connected to a mounting plate 791, the surface of the mounting plate 61 is provided with a mounting groove 65, the mounting plate 791 matches the size of the mounting groove 65, and the end of the screw 63 is connected to a pressing block 64. During assembly, the mounting plate 791 can be first embedded in the mounting groove 65, and then the screw 63 is screwed in, until the screw 63 is completely screwed into the mounting plate 61, the mounting plate 61 and the fixing block 51 are fixed together, at which time the pressing block 64 will cover the edge of the mounting groove 65 and limit the mounting plate 791, thereby connecting the mounting plate 791, the mounting member 6 and the rolling member 5 into a whole.

[0071] As an example, the optical performance of the flat field lens 1 itself can be further improved by optimizing the flat field component structure, so that it can play a better role in correcting aberrations and ensuring the flatness of the imaging plane, thereby directly improving the imaging quality, specifically including the following methods:

[0072] A multilayer optical thin film coating is plated on the surface of the flat field lens 1, such as a combination of thin films with different functions such as a high reflectivity film and an anti-reflection film. The anti-reflection film can reduce the reflection loss of light on the lens surface, improve the transmittance of light, allow more light to participate in imaging, and enhance the brightness and contrast of imaging; the high reflectivity film can reflect and shield unnecessary stray light under specific optical path design requirements, reduce the interference of stray light on imaging, and make the imaging clearer and purer.

[0073] In summary, compared with the existing technology that uses the temperature-refractive properties of different optical materials to adjust imaging performance, it relies on the gradual change of the physical properties of the material itself with temperature, and the process is relatively slow, which is not timely enough when the observation environment needs to be quickly switched. However, this technical solution uses a temperature sensor to monitor the temperature in real time, and uses a microcontroller to quickly judge and issue control instructions, which can quickly drive the corresponding driver and various adjustment components to adjust the angle of the flat field lens 1, and can complete the adjustment action in a short time, better adapt to scenes such as observation from day to night, rapid changes in different ambient temperatures, etc., and maintain good imaging quality in time.

[0074] Moreover, the adjustment effect of the traditional scheme that relies on the temperature-refractive property of optical materials is limited by the inherent properties of the materials, and the correction ability for special angles and complex optical path deviations is weak, and the imaging can only be adjusted within the limited range of material properties. The adjustment mechanism of this scheme can adjust the flat field lens 1 in multiple dimensions. Through the cooperation of multiple drivers, arc-shaped racks 4, swing components 7, etc., it can not only achieve angle adjustment in different rotation axis directions, but also perform reciprocating swinging movements, which can more flexibly and accurately correct complex optical path deviations caused by various factors such as temperature changes and assembly errors, and can perform all-round optimization and adjustment for problems such as imaging plane bending, thereby improving the adjustment range and accuracy of imaging quality.

[0075] In summary, the present solution integrates multiple adjustment components with a temperature sensor and a microcontroller to form a complete actively controllable adjustment system, wherein each component works together to accurately adjust the flat field lens 1 according to actual conditions such as temperature changes.

[0076] In addition, the present invention also provides a telescope, such as Figure 1 As shown, it includes a lens barrel 9, an eyepiece 91 and an objective lens 92 located at both ends of the lens barrel 9, and a flat field lens 1 located inside the lens barrel 9. A support frame 93 is also connected below the lens barrel 9, and the flat field lens 1 is adjusted and controlled by the above-mentioned adjustment mechanism.

[0077] As an example, in order to further improve the imaging quality of the telescope, an optical calibration auxiliary component may be added to the lens barrel 9, including the following structure:

[0078] Calibration light source: A calibration light source with known characteristics such as wavelength, light intensity, divergence angle, etc. is installed at a specific position inside the lens barrel 9 and can be turned on when calibration is needed so that the light it emits propagates along the optical path of the telescope, simulating the light conditions during actual observation and providing standard light input for subsequent calibration tests;

[0079] Calibration target: It is placed at the focal plane of the telescope imaging or near the observation position of the eyepiece 91. It is a flat plate with precise scales and patterns. It is used to receive the image of the calibration light source after passing through the optical system. By observing the position, clarity, shape, etc. of the image on the calibration target, it is possible to intuitively determine whether there is a deviation in the optical system, and then make targeted adjustments and optimizations.

[0080] By adding the above structures and components and making them work together with the original angle adjustment scheme of the flat-field mirror assembly, it is convenient to regularly and accurately calibrate the optical system of the telescope, ensure that each optical element is always in the best relative position and working state, and promptly detect and correct possible optical deviations, so that clearer, more stable and high-quality imaging effects can be obtained in different usage environments and observation conditions.

[0081] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", 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 representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0082] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the invention or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

Claims

1. An adjustment mechanism for a field flattening lens assembly, used for multi-dimensional adjustment of the field flattening lens, characterized in that: It includes a limit housing, an adjustment ring, an arc-shaped rack, a rolling element, a mounting element, a swing assembly, a swing knob, a temperature sensor and a microcontroller; The temperature sensor is used to monitor the ambient temperature and the internal temperature of the telescope in real time, and transmit the collected temperature data to the microcontroller in the form of an electrical signal; The microcontroller receives the temperature signal from the temperature sensor, determines whether the angle of the flat field lens needs to be adjusted and the amplitude of the adjustment, and sends corresponding control instructions to the driver; The limiting shell is used to carry the field flattening lens, the limiting shell is coaxially mounted inside the adjusting ring, the adjusting ring is coaxially mounted inside the arc-shaped rack, the limiting shell and the adjusting ring, as well as the adjusting ring and the arc-shaped rack are rotationally connected through the driver, and the rotation axis of the limiting shell and the rotation axis of the adjusting ring are vertically crossed in space; The rolling element is used to cooperate with the arc-shaped rack and drive the arc-shaped rack to perform circular motion under the action of the driver; the mounting member is used to link the rolling element and the swing component, and the swing component controls the rolling element to perform reciprocating swinging motion after being driven by the swing knob.

2. The adjustment mechanism of the field flattening lens assembly according to claim 1, characterized in that: The limiting shell comprises limiting rings arranged in mirror symmetry, the flat field lens is constrained and placed between two limiting rings, and an avoidance gap is formed on the outer circumference of the limiting ring corresponding to the position of the driver.

3. The adjustment mechanism of the field flattening lens assembly according to claim 2, characterized in that: The inner circumferences of the opposing surfaces of the two limiting rings are both formed with inwardly concave step grooves, and a plurality of elastic convex columns are arranged at intervals on the surface of the step grooves, and the elastic convex columns are conical columns.

4. The adjustment mechanism of the field flattening lens assembly according to claim 2, characterized in that: The driver driving the limit shell to rotate is defined as driver one, and rotating shafts one are inserted at positions corresponding to the avoidance notches on both sides of the adjustment ring that are mirror-symmetrical, one end of the two rotating shafts one radially penetrates the adjustment ring and is connected to an elastic limit strip, and the other end of at least one rotating shaft one is drivingly connected to the output shaft of the driver one; A plurality of elastic limiting blocks are arranged at intervals on the surface of the avoidance notch. After the two limiting rings are combined together, a limiting seam for limiting and fixing the elastic limiting strip is formed between the elastic limiting blocks on both sides.

5. The adjustment mechanism of the field flattening lens assembly according to claim 2, characterized in that: The driver that drives the adjusting ring to rotate is defined as driver 2. Rotating shafts 2 are inserted at positions corresponding to the avoidance gaps on both sides of the arc-shaped rack that are mirror-symmetrical. One ends of the two rotating shafts 2 radially penetrate the arc-shaped rack and the adjusting ring in sequence. A gasket is also sleeved on the shaft body of the rotating shaft 2 corresponding to the position between the arc-shaped rack and the adjusting ring. The other end of at least one rotating shaft 2 is transmission-connected to the output shaft of the driver 2.

6. The adjustment mechanism of the field flattening lens assembly according to claim 1, characterized in that: The rolling element comprises a fixed block, a rolling channel for accommodating the rolling of the arc-shaped rack is formed on the surface of the fixed block, a gear is rotatably arranged inside the fixed block corresponding to the rolling channel, and the gear is connected to the output shaft of the driver 3 through a transmission shaft; The arc-shaped rack is meshed and connected with the gear during the process of being inserted into the rolling channel and rolling. The edge of the rolling channel is also formed with a stopper bar for limiting the rolling track of the arc-shaped rack.

7. The adjustment mechanism of the field flattening lens assembly according to claim 1, characterized in that: The mounting member comprises a mounting plate and limit blocks located on both sides of the mounting plate, and the mounting plate is detachably connected to the rolling member via screws.

8. The adjustment mechanism of the field flattening lens assembly according to claim 7, characterized in that: The swinging assembly includes a bracket, and the side surface of the bracket has a "C"-shaped structure, that is, the bracket includes an opening part and a closed part; A rotating rod and a sliding rod are vertically arranged at the opening part of the bracket. The rotating rod and the sliding rod are arranged at intervals. The two ends of the rotating rod are respectively rotatably connected to the top and bottom of the opening part. A turntable is rotatably arranged at the closed part of the bracket, and the turntable is connected to the swinging knob through a connecting shaft; A connecting column is fixedly sleeved in the middle of the rotating rod body, and the connecting column is detachably connected to the mounting plate; Both ends of the rotating rod body are fixedly connected to one ends of two connecting rods. The other ends of the two connecting rods are respectively rotatably connected to the two ends of the sliding rod. A slider is slidably sleeved on the sliding rod body. An insertion rod is arranged on the surface of the slider facing the turntable, and a slot is opened on the surface of the turntable corresponding to the insertion rod.

9. The adjustment mechanism of the field flattening lens assembly according to claim 8, characterized in that: One end of the connecting column facing the mounting plate is connected with a mounting disc. An installation groove is opened on the surface of the mounting plate. The size of the mounting disc matches that of the installation groove. The end of the screw is connected with a pressing block. When the screw is completely screwed into the mounting plate, the pressing block will cover the edge of the installation groove and generate a limiting constraint on the mounting disc.

10. A telescope, characterized in that: It includes an eyepiece tube, an eyepiece and an objective lens located at both ends of the eyepiece tube, and a flat-field lens located inside the eyepiece tube. A support frame is also connected below the eyepiece tube. The flat-field lens is regulated and controlled by the regulating mechanism described in any one of claims 1-9.

Images