A stabilized laser rangefinder based on image imaging display

Abstract

This invention discloses a stabilized laser rangefinder based on image imaging display, comprising an image stabilization imaging system, a laser emitting system, a laser receiving system, and a window and a display screen encapsulated on the surface of the cavity, all housed within a housing cavity. The image stabilization imaging system receives a visible light beam incident from the window, and a stabilization reflector, a dichroic mirror, an imaging lens, and an image sensor are sequentially arranged along the propagation direction of the visible light beam. The stabilization reflector is mounted on a stabilization gimbal. The emitting lens of the laser emitting system directs the transmitted laser beam sequentially through the dichroic mirror, the stabilization reflector, and the window onto the target being measured. The laser signal reflected by the target is received by the laser receiving system. The image sensor and the laser receiving system are electrically connected to the display screen. This invention integrates image stabilization technology and laser ranging functionality into a small device, greatly improving user convenience while reducing the impact of shaking on observation.

Description

Technical Field

[0001] This utility model relates to the field of laser rangefinder technology, and in particular to a stabilized laser rangefinder based on image imaging display. Background Technology

[0002] Traditional laser rangefinders typically combine a monocular telescope with a laser ranging system, relying primarily on monocular observation. These devices are widely used in engineering, construction, and outdoor exploration. However, most of these devices require the user's eye to be closely pressed against the eyepiece for observation and measurement. While this method meets basic measurement needs, it has certain limitations in terms of user experience.

[0003] This method is not user-friendly for those accustomed to using both eyes for observation, and prolonged use may lead to eye fatigue. Because it requires close observation through the eyepiece, it limits the device's operational flexibility, which is particularly inconvenient in scenarios where rapid data acquisition is required, thus affecting the user experience. Currently, most laser rangefinders on the market lack effective image stabilization mechanisms. When holding the device, any slight hand tremor will cause the observed image to become blurry, and it cannot effectively compensate for the image instability caused by hand tremors, thereby affecting the observation effect and measurement accuracy.

[0004] Therefore, how to provide an image-stabilized laser rangefinder that integrates image stabilization and laser ranging functions is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] This invention addresses the current state of research by providing a stabilized laser rangefinder based on image imaging display. It not only offers clear and stable image display but also serves as a basic hardware structure to help overcome hand tremors, reducing the impact of shaking on observation. Integrating image stabilization technology and laser ranging functionality into a small device similar to a mobile phone or action camera greatly improves user convenience and comfort.

[0006] This utility model provides a stabilized laser rangefinder based on image imaging display, including an image stabilization imaging system, a laser emitting system, a laser receiving system, and a window and display screen encapsulated on the surface of the housing cavity, all placed inside the housing cavity.

[0007] The image stabilization imaging system receives a visible light beam incident from the window and includes a stabilizing mirror, a dichroic mirror, an imaging lens, and an image sensor arranged sequentially along the propagation direction of the visible light beam; the stabilizing mirror is mounted on a stabilizing gimbal.

[0008] The laser emitting system includes a laser tube and an emitting lens arranged sequentially along the propagation direction of the laser beam. The emitting lens directs the transmitted laser beam through the dichroic mirror, the image-stabilizing reflector, and the window to the target being measured. The laser beam reflected by the dichroic mirror is coaxial with the visible beam incident on the dichroic mirror through the window. The laser signal reflected by the target being measured is received by the laser receiving system.

[0009] Both the image sensor and the laser receiving system are electrically connected to the display screen.

[0010] Preferably, the image sensor is a CMOS image sensor.

[0011] Preferably, a lens filter is provided in the visible light beam propagation path between the imaging lens and the image sensor lens.

[0012] Preferably, one side of the dichroic mirror is coated with a visible light high-transmittance film, and the other side is coated with a laser high-reflectance film.

[0013] Preferably, the reflective surface of the anti-shake mirror is coated with a high-reflectivity film for visible light and laser.

[0014] Preferably, the anti-shake gimbal includes a gyroscope, an angle sensor, a rotating connector, a motor, and a controller; the gyroscope, angle sensor, and motor are all electrically connected to the controller; the output shaft of the motor is connected to the anti-shake reflector via the rotating connector.

[0015] Preferably, the laser receiving system includes a receiving lens, a laser filter, and a laser receiver; the laser signal reflected by the target being measured passes sequentially through the receiving lens and the filter, and is received by the laser receiver.

[0016] Preferably, the housing includes a back panel and a side panel, one end of the side panel is vertically disposed around the back panel, the display screen is encapsulated on the other end of the side panel as a front panel, the window is disposed on the back panel, and the image stabilization imaging system, the laser emitting system and the laser receiving system are all fixed to the back of the display screen.

[0017] Preferably, the laser receiving system includes a receiving lens, a laser filter, and a laser receiver; the laser signal reflected by the target being measured passes sequentially through the receiving lens and the filter, and is received by the laser receiver; the receiving lens is exposed on the surface of the back plate.

[0018] Preferably, the receiving lens has a preset field of view to receive laser beams within the jitter range.

[0019] Compared with the prior art, this utility model has the following advantages:

[0020] This utility model utilizes a reasonable optical path design to combine a laser ranging system with an imaging system, reducing the inconvenience caused by monocular observation in traditional rangefinders, and achieving stable binocular observation and stable distance measurement with a large-screen image-stabilized laser rangefinder.

[0021] This invention incorporates image stabilization components into the imaging and laser systems, which helps to counteract image shake caused by hand tremors, ensuring the clarity and stability of the observed image. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of the image-based anti-shake laser rangefinder provided in this embodiment of the present invention;

[0024] Figure 2 This is the Z-axis optical path diagram of the image-based anti-shake laser rangefinder provided in this embodiment of the present invention;

[0025] Figure 3 This is a Y-axis view illustrating the image stabilization control principle of the anti-shake mirror provided in this embodiment of the utility model;

[0026] Figure 4 This is a structural diagram of the external display screen of the image-based anti-shake laser rangefinder provided in this embodiment of the present invention;

[0027] Figure 5 This is an optical path diagram of the laser receiving system provided in an embodiment of the present invention. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This utility model discloses a stabilized laser rangefinder based on image imaging display, such as... Figure 1As shown, it includes an image stabilization imaging system, a laser emitting system, a laser receiving system, and a window 6 and a display screen 13 encapsulated on the surface of the housing cavity, all housed within the housing cavity.

[0030] like Figure 2-3 As shown, the image stabilization imaging system receives a visible light beam incident from the window plate 6, and includes a stabilizing reflector 5, a dichroic mirror 4, an imaging lens 3, and an image sensor 1 arranged sequentially along the propagation direction of the visible light beam. The visible light beam reflected by the target object passes through the window plate 6, the stabilizing reflector 5, the dichroic mirror 4, and the imaging lens 3, and is imaged on the image sensor 1, and finally displayed on the display screen 13; the stabilizing reflector 5 is mounted on the stabilizing gimbal 7;

[0031] The laser emitting system includes a laser tube 9 and an emitting lens 8 arranged sequentially along the propagation direction of the laser beam. The emitting lens 8 directs the transmitted laser beam through a dichroic mirror 4, a mirror 5 for image stabilization, and a window 6 to the target being measured. The laser beam reflected by the dichroic mirror 4 is coaxial with the visible beam incident on the dichroic mirror 4 through the window 6. The laser signal reflected by the target being measured is received by the laser receiving system.

[0032] Both the image sensor 1 and the laser receiving system are electrically connected to the display screen 13.

[0033] In this embodiment, the laser emitting system and the image stabilization imaging system share a single laser reflector 4. The laser emitted by the laser tube 9 is transmitted through the emitting lens 8, and then reflected sequentially by the dichroic mirror 4 and the laser reflector 4. It can then be coaxial with the imaging optical path, i.e., reflected by the stabilization reflector 5, transmitted through the window 6, and exiting onto the target object. This coaxial path is formed by the visible light beam entering the stabilization reflector 5 through the window 6, and then being reflected again by the laser reflector 4 to the dichroic mirror 4. Because the optical paths are coaxial, real-time synchronous movement of the image optical path and the laser optical path can be achieved, thus ensuring that the observed pattern position is the same as the laser position.

[0034] In one embodiment, image sensor 1 is a CMOS image sensor 1.

[0035] In one embodiment, a lens filter 2 is provided in the visible light propagation path between the imaging lens 3 and the image sensor 1 lens.

[0036] In one embodiment, the dichroic mirror 4 has a visible light high-transmittance film coated on one side and a laser high-reflectance film coated on the other side. The visible light high-transmittance film has a transmittance greater than 95%, and the laser high-reflectance film has a reflectance greater than 95%. The laser reflector 4 transmits visible light and reflects invisible laser light.

[0037] In one embodiment, the reflective surface of the image-stabilized mirror 5 is coated with a high-reflectivity film for both visible light and laser light. The reflectivity of the high-reflectivity film is greater than 95%. The image-stabilized mirror 5 reflects both visible light and invisible laser light.

[0038] In one embodiment, the anti-shake gimbal 7 includes a gyroscope, an angle sensor, a rotating connector, a motor, and a controller for sensing the motion of the system; the gyroscope, angle sensor, and motor are all electrically connected to the controller; the output shaft of the motor is connected to the anti-shake mirror 5 via the rotating connector.

[0039] When hand shakes or wobbles occur during the use of the handheld product, the shaking signal is sensed by the gyroscope and angle sensor and transmitted to the controller. The control algorithm quickly calculates the compensation value, and the motor drives the anti-shake mirror 5 to move in the opposite direction, thereby compensating for the image blur caused by hand shake or wobbling and achieving the effect of image stabilization.

[0040] It should be noted that the specific steps of the control algorithm to calculate the compensation value based on the sensing signals sensed by the gyroscope and angle sensor are not improvements of this utility model and can be achieved using relevant existing software modules.

[0041] In this embodiment, the rotating connector includes a rotating shaft; the output shaft of the motor is connected to the rotating shaft via a gear set or a threaded screw; the anti-shake mirror 5 is fixed on the rotating shaft, and the axis of the rotating shaft is parallel to the plane where the anti-shake mirror 5 is located. Three sets of motors can be used to drive the rotating connector, and the three motors achieve three-dimensional rotation of the anti-shake mirror 5 along the XYZ axes through corresponding mechanical transmission components. It is understood that using multiple motors to achieve multi-dimensional rotation of the anti-shake mirror 5 is a conventional mechanical transmission structure and is not an improvement of this utility model; it can be achieved using existing mechanical transmission structures.

[0042] In this embodiment, the rotating connector includes a bracket, a crossbar, a magnet, and a coil. The bracket is fixed inside the gimbal, and the crossbar is rotatably fixed to the top of the bracket at its middle position, forming a lever-like structure. A magnet is fixed to one end of the crossbar, and a stabilization mirror 5 is fixed to the other end. The coil is also fixed inside the gimbal, corresponding to the position of the magnet. The coil can be wound in multiple layers to enhance the generated magnetic field strength. The specific winding direction (clockwise or counterclockwise) depends on the desired magnetic field direction and its effect on the magnet. When current flows through the coil, a magnetic field is generated around its own axis. According to Ampere's law, the direction of the current determines the direction of the magnetic field. In this embodiment, the magnet should be placed so that its magnetic poles (N and S poles) match the direction of the magnetic field generated by the coil to maximize the effect of the electromagnetic force. Specifically, if the magnet is to move in a certain direction, the direction of the current through the coil needs to be adjusted so that the generated magnetic field can attract or repel the magnet. Based on electromagnetic induction, different magnetic forces are generated, which, under the influence of the lever structure, pull the image stabilization lens to produce different tilt angles. This compensates for the optical axis deviation caused by image shaking, thereby stabilizing the image and reducing shake.

[0043] In this embodiment, the rotating connector can drive the anti-shake mirror 5 to move in any direction, compensating for image blur caused by any shaking.

[0044] In one embodiment, such as Figure 5 As shown, the laser receiving system includes a receiving lens 10, a laser filter 11, and a laser receiver 12. The laser signal reflected by the target passes sequentially through the receiving lens 10 and the filter, and is received by the laser receiver 12. The optical signal is converted into an electrical signal, processed by software, and the distance to the target is calculated and displayed on the display screen 13 for human observation. The laser filter 11 is used to filter light of other wavelengths besides laser light, reducing interference.

[0045] It should be noted that different combinations of laser emitting and receiving systems can achieve different ranging requirements. The software can employ existing software modules that perform photoelectric signal conversion and calculate the distance to the target object based on the electrical signal, and these are not within the scope of protection of this utility model.

[0046] In one embodiment, the housing includes a back panel and a side panel. One end of the side panel is vertically disposed around the back panel. The display screen 13 is encapsulated on the other end of the side panel as a front panel. The window panel 6 is disposed on the back panel. The image stabilization imaging system, the laser emission system, and the laser receiving system are all fixed to the back of the display screen 13.

[0047] like Figure 1 and Figure 4As shown, the housing can be a rectangular housing, and its size can be selected as needed based on the size of the internal optical components and the required size of the display screen 13.

[0048] In this embodiment, the laser receiving system includes a receiving lens 10, a laser filter 11, and a laser receiver 12; the laser signal reflected by the target being measured passes through the receiving lens 10 and the filter in sequence and is received by the laser receiver 12; the receiving lens 10 is exposed on the surface of the back plate.

[0049] In this embodiment, the receiving lens 10 has a preset field of view so as to receive the laser beam within the shaking range, thereby enabling good observation and distance measurement during the product image stabilization process.

[0050] In one embodiment, the display screen 13 is an LCD screen used to display images and related distance information.

[0051] In one embodiment, the imaging lens 3 can be a fixed-focus lens or a zoom lens.

[0052] The following describes the observation and distance measurement process of an embodiment of this utility model:

[0053] The target object is captured by the image sensor 1 through the imaging system and the image is displayed on the display screen 13. If the image of the object is blurry due to shaking, the gyroscope and angle sensor in the anti-shake gimbal 7 sense the shaking amplitude and generate an angular displacement signal, which is output to the internal controller. The control algorithm quickly calculates the compensation value, and the internal motor drives the anti-shake mirror 5 to move in the opposite direction, thereby compensating for the image blur caused by hand shaking or swaying, and achieving the effect of image stabilization. The laser tube 9 emits a laser, which is emitted after passing through the emitting lens 8, the dichroic mirror 4, the anti-shake mirror 5, and the window 6. After reaching the target object, the laser signal is reflected. The reflected light signal passes through the receiving lens 10 and the laser filter 11, and is finally received by the laser receiver 12. Based on the time difference between the emitted and received laser signals, the distance of the target object is calculated through circuit and software processing and displayed on the display screen 13, thereby achieving stable observation and distance measurement of the target object.

[0054] It should be noted that the process of the controller generating control signals based on angular displacement signals is implemented using existing algorithms. This embodiment only provides the hardware structure of the image stabilization component that can respond to the control signals, so as to meet the structural requirements of the image stabilization lens 3 moving in all directions.

[0055] The above provides a detailed description of the image-based anti-shake laser rangefinder provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

[0056] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. An anti-shake laser range finder based on image imaging display, characterized in that, It includes an image stabilization imaging system, a laser emitting system, a laser receiving system, and a window and display screen encapsulated on the surface of the housing cavity, all housed within the housing cavity. The image stabilization imaging system receives a visible light beam incident from the window and includes a stabilizing mirror, a dichroic mirror, an imaging lens, and an image sensor arranged sequentially along the propagation direction of the visible light beam; the stabilizing mirror is mounted on a stabilizing gimbal. The laser emitting system includes a laser tube and an emitting lens arranged sequentially along the propagation direction of the laser beam. The emitting lens directs the transmitted laser beam through the dichroic mirror, the image-stabilizing reflector, and the window to the target being measured. The laser beam reflected by the dichroic mirror is coaxial with the visible beam incident on the dichroic mirror through the window. The laser signal reflected by the target being measured is received by the laser receiving system. Both the image sensor and the laser receiving system are electrically connected to the display screen.

2. The image-based anti-shake laser rangefinder according to claim 1, characterized in that, The image sensor is a CMOS image sensor.

3. The anti-shake laser range finder based on image imaging display according to claim 1, characterized in that, A lens filter is provided in the visible light beam propagation path between the imaging lens and the image sensor lens.

4. The anti-shake laser range finder based on image imaging display according to claim 1, characterized in that, The dichroic mirror is coated with a visible light high-transmittance film on one side and a laser high-reflectance film on the other side.

5. The anti-shake laser range finder based on image imaging display according to claim 1, characterized in that, The reflective surface of the anti-shake mirror is coated with a high-reflectivity film for visible light and lasers.

6. The anti-shake laser range finder based on image imaging display according to claim 1, characterized in that, The anti-shake gimbal includes a gyroscope, an angle sensor, a rotating connector, a motor, and a controller; the gyroscope, angle sensor, and motor are all electrically connected to the controller; the output shaft of the motor is connected to the anti-shake reflector via the rotating connector.

7. The anti-shake laser range finder based on image imaging display according to claim 1, characterized in that, The laser receiving system includes a receiving lens, a laser filter, and a laser receiver; the laser signal reflected by the target being measured passes sequentially through the receiving lens and the filter, and is received by the laser receiver.

8. The anti-shake laser range finder based on image imaging display according to claim 1, characterized in that, The housing includes a back panel and side panels. One end of the side panel is vertically disposed around the back panel. The display screen is encapsulated on the other end of the side panel as a front panel. The window is disposed on the back panel. The image stabilization imaging system, the laser emitting system, and the laser receiving system are all fixed to the back of the display screen.

9. The anti-shake laser range finder based on image imaging display according to claim 8, characterized in that, The laser receiving system includes a receiving lens, a laser filter, and a laser receiver; the laser signal reflected by the target being measured passes sequentially through the receiving lens and the filter, and is received by the laser receiver; the receiving lens is exposed on the surface of the back plate.

10. The anti-shake laser range finder based on image imaging display according to claim 9, characterized in that, The receiving lens has a preset field of view to receive laser beams within the jitter range.

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