Binocular three-light telescope

Abstract

The embodiment of the invention provides a binocular three-light telescope, and the telescope comprises a binocular lens which comprises a visible light lens, an infrared lens and a laser window. The movement assembly comprises a visible light movement group, an infrared movement group and a laser range finder, the visible light movement group receives visible light through a visible light mirror and generates a visible light image, the infrared movement group receives infrared light through an infrared mirror and generates an infrared image, and the laser range finder receives laser through a laser window and calculates a ranging result; the system chip board is respectively in signal connection with the visible light movement group, the infrared movement group and the laser range finder; two ends of the shell are respectively connected with the binocular lens and the eyepiece system; and the eyepiece system comprises two eyepieces, each eyepiece is correspondingly provided with a display screen, and the display screens are in signal connection with the system chip board. According to the application, visible light imaging, high-sensitivity infrared thermal imaging and laser ranging are integrated, a fused image containing richer information can be obtained, and more stringent use requirements are met.

Description

Binocular trifocal telescope Technical Field

[0001] The present application relates to the field of telescope technology, and in particular to a binocular three-beam telescope. Background Art

[0002] A telescope is a visual optical instrument used to observe distant objects. It can magnify the very small angle of distant objects by a certain ratio, so that they have a larger angle in the image space, making objects that are originally impossible to see or distinguish with the naked eye become clear and distinguishable. It has many and wide-ranging applications.

[0003] Outdoor binoculars are generally used for outdoor viewing and activities and are the most common across all application areas. Navigation requires highly waterproof and sealed binoculars. Forestry uses binoculars for forest fire prevention and reconnaissance. With the continuous expansion of China's power grid, the number of ultra-high voltage (UHV) transmission lines has increased rapidly. Many transmission lines are located in mountainous areas. Traditional manual inspections are hampered by uncertainties such as terrain, personnel quality, and weather conditions. This results in low efficiency, long re-inspection cycles, and low data accuracy. Consequently, binoculars are also used in power line inspections. Furthermore, binoculars are used by the military and police for terrain surveys and observation of enemy movements. In addition to the aforementioned applications, binoculars are also used in water conservancy, railways, and other fields.

[0004] Currently, most telescope spectra on the market are available in infrared-only, visible-only, or infrared + laser combinations. Due to the diverse applications of telescopes, such as those listed above, existing single-spectrum or single-spectrum combined ranging products are no longer sufficient for the diverse and demanding applications of telescopes. Technical issues

[0005] In order to solve the existing technical problems, the present application provides a binocular three-light telescope that can obtain images with richer information including visible light imaging, infrared thermal imaging and laser ranging, meeting more stringent usage requirements. Technical Solutions

[0006] To achieve the above objectives, the technical solution of the embodiment of the present application is implemented as follows:

[0007] The present invention provides a binocular three-light telescope, comprising:

[0008] Binocular tube, including visible light tube, infrared tube and laser window;

[0009] The core assembly includes a visible light core group, an infrared core group, and a laser rangefinder. The visible light core group receives visible light through the visible light barrel and generates a visible light image. The infrared core group receives infrared light through the infrared barrel and generates an infrared image. The laser rangefinder receives laser light through the laser window and calculates a distance measurement result.

[0010] A system chip board is respectively connected to the visible light core group, the infrared core group and the laser rangefinder, and is used to process and fuse the visible light image and the infrared image, and receive the ranging result;

[0011] A housing, the front and rear ends of which are respectively connected to the binocular tube and the eyepiece system to form a space for accommodating the core assembly and the system chip board;

[0012] The eyepiece system includes two eyepieces, each of which is provided with a corresponding display screen, and the display screen is connected to the system chip board signal.

[0013] In one embodiment, the system chip board integrates at least one of a battery compartment board, a display power board, a key board, a microphone board, a GPS module, an electronic compass, a WiFi module, and a debugging interface board.

[0014] In one embodiment, both sides of the housing are gripping areas in a C-shaped arc, and the housing is provided with a button area between the two gripping areas.

[0015] In one embodiment, the visible light movement group includes a visible light lens and a visible light movement, the visible light lens corresponds to the visible light lens barrel, and the visible light movement senses the light projected by the visible light lens and generates a visible light image; the infrared movement group includes an infrared lens and an infrared movement, the infrared lens corresponds to the infrared lens barrel, and the infrared movement senses the light projected by the infrared lens and generates an infrared image.

[0016] In one embodiment, the core assembly further includes a lens bracket, and the visible light core and the infrared core are respectively mounted on the lens bracket through a focusing mechanism.

[0017] In one embodiment, the focusing mechanism includes a focusing screw, a focusing screw bracket and a lens flange; the focusing screw is arranged in a direction parallel to the optical axis, the visible light movement and the infrared movement are fixedly connected to the corresponding lens flanges respectively, one end of the focusing screw bracket is fixedly connected to the lens bracket, and the other end is rotatably connected to the focusing screw; the lens flange is threadedly connected to the end of the focusing screw, so that when the focusing screw rotates, the lens flange can move relative to the visible light lens or the infrared lens along the optical axis.

[0018] In one embodiment, the focusing mechanism further includes an anti-backlash spring, a threaded hole corresponding to the focusing screw is provided on the lens flange, the anti-backlash spring is placed in the threaded hole, and the end of the focusing screw is against the anti-backlash spring.

[0019] In one embodiment, the focusing screw bracket is connected to the diameter reduction portion of the focusing screw, and both ends of the connection between the focusing screw bracket and the focusing screw are respectively equipped with retaining springs that are clamped at the diameter reduction portion to constrain the axial position of the focusing screw at the connection portion with the adjusting screw bracket.

[0020] In one embodiment, a positioning guide groove is provided on the lens flange along the corresponding optical axis direction, and a positioning pin is protruded on the lens barrel of the corresponding visible light lens and the infrared lens. The positioning pin is limited in the corresponding positioning guide groove so that the lens flange can move relative to the lens barrel along the corresponding optical axis direction.

[0021] In one embodiment, the visible light lens includes a lens and a dual-bandpass filter, wherein the dual-bandpass filter allows light of a first wavelength band and a second wavelength band to pass through, wherein the first wavelength band is a visible light band and the second wavelength band is an infrared light band; the visible light core includes an image sensor and an image processing module, wherein the image processing module is connected to the image sensor to receive an image signal sensed by the image sensor;

[0022] The binocular trifocal telescope has a day mode and a night mode. In the day mode, the image processing module filters the image of the second band of light in the image signal from the image sensor and retains only the image of the first band of light. In the night mode, the image processing module retains both the image of the first band of light and the image of the second band of light.

[0023] In one embodiment, the first wavelength band is 420-660 nm, and the second wavelength band is 930-970 nm; the dual-bandpass filter has a transmission rate of more than 50% for light in the first wavelength band and a transmission rate of more than 85% for light in the second wavelength band.

[0024] In one embodiment, the image processing module determines whether it is the day mode or the night mode by using a light sensor that senses changes in light brightness, and filters out the image of the second band of light in the image signal received from the image sensor when in the day mode.

[0025] In one embodiment, an infrared flashlight is detachably mounted on the bottom of the housing, and the infrared flashlight emits infrared light in a direction parallel to the optical axis of the infrared lens when powered on.

[0026] In one embodiment, a battery is provided inside the infrared flashlight, and the infrared flashlight adopts a 940nm infrared emitting tube.

[0027] In one embodiment, the infrared flashlight is mounted to the housing via a flashlight mounting bracket. The flashlight mounting bracket includes a clamp and a connecting plate. The clamp is sleeved around the periphery of the infrared flashlight. One end of the connecting plate is fixed to the clamp, and the other end is locked to the housing via a fastener.

[0028] In one embodiment, the eyepiece system further includes a rear shell having two eyepiece holes formed thereon. Each set of the eyepieces is fixed from the outside to the corresponding eyepiece holes on the rear shell via an eyepiece flange, and each display screen is fixed to the corresponding eyepiece flange via a screen pressing block.

[0029] In one embodiment, the eyepiece system further includes a pressure ring, which is connected to the inner side of the corresponding eyepiece flange via a thread. By adjusting the installation position of the pressure ring on the eyepiece flange, the tightness between the eyepiece flange and the eyepiece hole can be adjusted.

[0030] In one embodiment, the eyepiece system further includes a guide block, which has a guide hole of the same shape as the eyepiece hole, and the guide hole is arranged on the inner side of the eyepiece hole; a baffle extends outward from the circumference of the eyepiece flange, and the baffle is larger than the eyepiece hole and abuts against the outer side of the rear shell to block the eyepiece hole from the outside and constrain the position of the eyepiece flange, and the eyepiece flange is provided with a connecting end, which passes through the eyepiece hole and the guide hole and is threadedly connected to the pressure ring, and the rear end face of the pressure ring is in contact with the corresponding front end face of the guide block.

[0031] In one embodiment, the guide block is made of a self-lubricating and wear-resistant material, and a locking hole is provided on the side wall of the pressure ring for a locking pin to be inserted into the locking hole and pressed against the wall of the connecting end.

[0032] In one embodiment, scale markings are provided on the outer side of the rear shell, and the scale markings are located between the two eyepiece holes, and adjacent scale markings are equally spaced to indicate the distance that the eyepiece flange and the eyepiece move relative to the rear shell. Beneficial effects

[0033] The binocular three-light telescope provided in the embodiments of the present application has at least the following beneficial effects: The present application provides a binocular three-light telescope that integrates visible light imaging, high-sensitivity infrared thermal imaging and laser ranging, and can obtain a fused image containing richer information, meeting more stringent usage requirements, and can be used as a portable binocular three-light handheld telescope suitable for all scenarios such as outdoor adventures, hunting, and field safety protection.

[0034] The binocular three-light telescope of the present application has a manual focusing function for visible light and infrared objective lenses. The focusing function is achieved by adjusting the relative position of the movement (visible light movement, infrared movement) and the lens (visible light lens, infrared lens). When the knob is turned with a finger, the focusing screw will rotate together. The rotation of the focusing screw will drive the lens flange and the movement relative to the lens, thereby achieving the function of focusing. By eliminating the internal focusing of the lens, the lens structure is simplified and the weight is reduced. The entire functional structure does not require additional space for the entire machine. The positions that need to be sealed on the functional mechanism only require ordinary sealing rings. During the use of the entire machine, focusing can be completed with a single finger, which is very convenient.

[0035] The binocular trifocal telescope described in this application features adjustable interpupillary distance. This is achieved by securing the eyepiece to the eyepiece flange and adding a guide block. The tightness of the interpupillary distance can be adjusted using the guide block's pressure ring. The structure is simple to assemble, requiring no screws or complex parts. The overall design is unrestricted and can be designed in various shapes without affecting the internal layout, leaving more space for additional functional components. A sealing ring installed on the eyepiece flange ensures a high level of sealing.

[0036] The binocular trifocal telescope of this application has day and night functions. It uses a dual-bandpass filter to replace the IR-CUT dual filter switch. The day mode image processing module filters out infrared light to obtain a clear image. In night mode, it can sense infrared light to obtain a lower illumination. It has the characteristics of high cost performance, small size, simple structure, and high stability. It can improve the effect of night color imaging and ensure the quality of optical imaging. To improve the effect of night color imaging, an infrared flashlight can be used to enhance the light illumination. Then, an image processing algorithm is used to optimize the visible light imaging effect, improving the effect of visible light night color imaging and ensuring the quality of optical imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] FIG1 is a schematic diagram of the three-dimensional structure of a binocular three-light telescope according to an embodiment of the present application;

[0038] FIG2 is a schematic diagram of the three-dimensional structure of the binocular three-light telescope in FIG1 from another angle;

[0039] FIG3 is a schematic diagram of the exploded structure of the binocular trifocal telescope in FIG1 ;

[0040] FIG4 is a schematic diagram showing the connection relationship of the system chip board in FIG3;

[0041] FIG5 is a schematic diagram of the three-dimensional structure of the core assembly in FIG3 after removing the laser rangefinder from another angle;

[0042] FIG6 is an enlarged view of portion I in FIG5 ;

[0043] FIG7 is an enlarged view of part II in FIG5 ;

[0044] FIG8 is a schematic diagram of the exploded structure of the movement assembly in FIG5 ;

[0045] FIG9 is a schematic diagram of the main view structure of the eyepiece system in FIG3 ;

[0046] FIG10 is a schematic diagram of the rear view structure of the eyepiece system in FIG3 ;

[0047] FIG11 is a schematic diagram of the exploded structure of the eyepiece system in FIG9 ;

[0048] FIG12 is an axial cross-sectional view of the visible light lens in FIG8 ;

[0049] FIG13 is a schematic diagram of the bandpass of the dual-bandpass filter in FIG12 ;

[0050] FIG14 is a schematic diagram of the three-dimensional structure of a binocular three-light telescope according to another embodiment of the present application;

[0051] FIG15 is a schematic diagram of the rear view structure of the binocular trifocal telescope in FIG14 .

[0052] The components in the figure are numbered as follows:

[0053] Binocular lens barrel 10 (including visible light lens barrel 11, infrared lens barrel 12, connecting plate 13, laser window 14);

[0054] Movement assembly 20 (including visible light lens 21, infrared lens 22, visible light movement 23, infrared movement 24, laser rangefinder 25, lens bracket 26, focusing mechanism 27; lens barrel 211, lens 212, dual-bandpass filter 213, spacer 214, sealing ring 215, pressure ring 216; positioning pin 2111; knob 271, focusing screw 272, focusing screw bracket 273, lens flange 274, anti-backlash spring 275, retaining spring 276; positioning guide groove 2741);

[0055] System chip board 30 (including battery compartment board 31, display power board 32, key board 33, microphone board 34, GPS module 35, electronic compass 36, WiFi module 37, debugging interface board 38, interface 39);

[0056] Housing 40 (including grip area 41 and button area 42);

[0057] Eyepiece system 50 (including rear housing 51, eyepiece 52, eyepiece flange 53, sealing ring 54, display screen 55, screen pressing block 56, guide block 57, pressing ring 58; eyepiece hole 511, scale mark 512; baffle 531, connecting end 532; guide hole 571);

[0058] Battery compartment group 60;

[0059] Infrared flashlight 70;

[0060] Flashlight mounting bracket 80 (including clamp 81 and connecting piece 82);

[0061] Binocular trifocal telescope 100. Modes for Carrying Out the Invention

[0062] The technical solution of this application is further elaborated in detail below with reference to the accompanying drawings and specific embodiments.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are intended only to describe specific embodiments and are not intended to limit the implementation of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0064] In the description of this application, it should be understood that the terms "center," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0065] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0066] Infrared detectors can not only obtain target information in the scene, but also effectively display hidden hot targets, regardless of day or night, or inclement weather. However, due to factors such as the radiation characteristics of the scene itself, the system's operating wavelength, transmission distance, and atmospheric attenuation, infrared images have low contrast, strong spatial correlation, and poor ability to reflect target details. Visible light detectors can compensate for the shortcomings of infrared detectors' low output image contrast and poor ability to reflect target details. However, CCD (charge-coupled device) detectors usually acquire target information in the scene "passively," and in the dark or in inclement weather, the image quality obtained can be very poor. Infrared images can compensate for these shortcomings of visible light images.

[0067] Based on the above research results, this application provides a binocular three-beam telescope that uses visible light imaging and infrared imaging to produce a fused image, while also providing laser ranging. The resulting composite image contains visible light information, infrared information, and laser ranging information. Infrared and visible light image fusion combines the infrared and visible light images of the same scene into a fused image. Combined with ranging information, the resulting composite image contains more information, making it more suitable for human visual observation and computer reading and information extraction.

[0068] Please refer to Figures 1, 2, and 3, which are schematic diagrams of the structure of a binocular trifocal telescope 100 according to an embodiment of the present application. The binocular trifocal telescope 100 includes a binocular tube 10, a core assembly 20, a system chip board 30, a housing 40, and an eyepiece system 50. The binocular tube 10, the housing 40, and the eyepiece system 50 are sequentially fixedly connected to secure the core assembly 20 and the system chip board 30 within the space formed by them.

[0069] The binocular lens barrel 10 includes a visible light lens barrel 11 and an infrared lens barrel 12. The visible light lens barrel 11 and the infrared lens barrel 12 are connected to form an integral body by a connecting plate 13. The connecting plate 13 is provided with a laser window 14 for emitting and receiving reflected ranging laser light. The laser window 14 can be provided between the visible light lens barrel 11 and the infrared lens barrel 12, utilizing the space between the visible light lens barrel 11 and the infrared lens barrel 12 to make the overall structure more compact.

[0070] The core assembly 20 includes a visible light lens 21, an infrared lens 22, a visible light core 23, an infrared core 24, a laser rangefinder 25, and a lens bracket 26. The visible light lens 21 and the infrared lens 22 are fixed to the lens bracket 26, which is fixed within the housing 40. The visible light lens 21 and the infrared lens 22 correspond to the visible light barrel 11 and the infrared barrel 12 of the binocular tube 10, respectively. The laser rangefinder 25 is mounted on the lens bracket 26 between the visible light lens 21 and the infrared lens 22, so that the laser light emitted by the laser rangefinder 25 is directly facing the laser window 14 of the binocular tube 10, thereby emitting distance-measuring laser light and receiving reflected feedback laser light.

[0071] A visible light engine 23 is mounted on a lens holder 26 via a focusing mechanism 27, corresponding to the visible light lens 21. An infrared engine 24 is mounted on the lens holder 26 via a focusing mechanism 27, corresponding to the infrared lens 22. The visible light engine 23 senses visible light focused on it by the visible light lens 21 and produces a visible light image. The infrared engine 24 senses infrared light focused on it by the infrared lens 22 and produces an infrared image.

[0072] The system chip board 30 includes a SOC (System on Chip) for centralized control of the electronic components within the binocular tri-optic telescope 100. It serves as the carrier for the overall software functions and is connected to the core assembly 20 via an FPC cable. The system chip board 30 houses an image processing chip. The visible light core 23, infrared core 24, and infrared rangefinder 25 are connected to the system chip board 30 by signal connection. The system chip board 30 fuses the visible light image and infrared image to produce a fused image, and combines the ranging results to produce a composite image containing visible light information, infrared information, and ranging information. The system chip board 30 outputs the composite image, which is a superposition of the laser ranging results with the visible light image, infrared image, or fused image, to the display screen 55 for display. Menus and other software functions can be further superimposed on the composite image on the system chip board 30 and then output to the display screen 55 for display.

[0073] Through the system chip board 30, the binocular three-light telescope 100 has three image modes: visible light image, infrared image, and fusion image. The visible light mode is used during the day, the infrared mode is used in the dark night, and the fusion mode is used all day long, which can solve the defect of insufficient functions of a single type of telescope.

[0074] Please refer to Figure 4. The system chip board 30 can provide a rich set of external interfaces, on which are integrated a battery compartment board 31, a display power board 32, a key board 33, a microphone board 34, a GPS module 35, an electronic compass 36, a WiFi module 37 and a debugging interface board 38. Among them, the battery compartment board 31 is connected to the battery compartment group 60 and is used to control the charging and discharging of the battery compartment group 60; the display power board 32 is connected to the display screen 55 in the eyepiece system 50 and is used to control the information displayed on the display screen 55; the key board 33 can realize the human-computer interaction function. In the illustrated embodiment, corresponding to the two key areas 42 on the housing 40, there are two left and right key boards with a total of 6 keys. The left key board 33 includes a power button, a laser button, and a photo button. The right key board 33 includes a menu button and 2 direction keys; the microphone board 34 is connected to a microphone (not shown) for processing the sound signal picked up by the microphone; the GPS module 35 is a binocular three-optical telescope. The telescope 100 provides GPS navigation and orientation functions; the electronic compass 36 can provide a north-south pointing function, which is convenient for outdoor use; the WiFi module 37 provides wireless signal transmission and reception functions, and through interconnection functions such as mobile phone APP, remote viewing can be achieved through the WiFi interconnection function at a certain distance; the debugging interface board 38 is used to provide an interface for connecting to external devices. For example, the debugging interface board 38 can be connected to the interface 39, and the data cable of the corresponding interface type (such as Type-C, MiniUSB, etc.) is connected through the interface 39 to provide power supply, data export, firmware update, PAL video output and other functions, which reduces the difficulty of use for users.

[0075] Based on the system chip board 30 and its internal hardware, the binocular trifocal telescope 100 can implement numerous software functions, providing a convenient and enriched user experience. The binocular trifocal telescope 100 can implement functions including, but not limited to: power on and off; image mode switching (visible light image, infrared image, fused image); screen brightness adjustment; visible light and infrared image brightness and contrast adjustment; picture-in-picture function; infrared hotspot tracking function; infrared image polarity adjustment function; infrared image enhancement function; infrared image correction function; status icon display function; electronic zoom for visible light, infrared, and fused images; electronic compass and GPS positioning and navigation functions; laser ranging information display; photo taking, video recording, and file management, playback, and deletion; memory card formatting and real-time WiFi transmission; mobile phone app interconnection; battery level display and undervoltage indicator; system time display and setting; recording; restoring system settings; and viewing system information.

[0076] Referring to Figures 5 to 8 , the focusing mechanism 27 includes a knob 271, a focusing screw 272, a focusing screw bracket 273, and a lens flange 274. The lens flange 274 is movable relative to the corresponding visible light lens 21 and infrared lens 22 along the optical axis. The visible light sensor 23 and the infrared sensor 24 are mounted within the lens flange 274 and fixedly connected to their respective lens flanges 274. The focusing screw 272 is arranged parallel to the optical axis. One end is rotatably mounted on the rear housing 51 of the eyepiece system 50, which is fixedly connected to the housing 40. The other end is rotatably mounted on the focusing screw bracket 273, which is fixed to the lens bracket 26, thereby rotatably mounting the focusing screw 272 within the housing 40. The knob 271 is fixedly connected to the end of the focusing screw 272 that protrudes from the rear housing 51. The lens flange 274 is threadedly connected to the other end of the focusing screw 272.

[0077] As shown in Figure 6, the focus screw bracket 273 is connected to the reduced diameter portion of the focus screw 272 and is fitted with retaining springs 276 at both ends for position limiting. The retaining springs 276, in conjunction with the focus screw bracket 273, limit the movement of the focus screw 272, restraining it at its connection with the bracket 273 and preventing axial movement during rotation.

[0078] Focusing mechanism 27 also includes an anti-backlash spring 275. Lens flange 274 has a threaded hole corresponding to focus screw 272. Anti-backlash spring 275 is positioned within the threaded hole, with the front end of focus screw 272 abutting against anti-backlash spring 275. When the external thread of focus screw 272 mates with the internal thread of lens flange 274, the anti-backlash spring 275 eliminates the gap between the internal and external threads. The elastic force of anti-backlash spring 275 adjusts the displacement of lens flange 274 relative to focus screw 272, ensuring accurate focusing. Taking the focusing of the visible light lens 21 as an example, when the knob 271 is turned with a finger, the focusing screw 272 will rotate along with the knob 271. The rotation of the focusing screw 272 will drive the lens flange 274 threadedly connected to the focusing screw 272 to move relative to the focusing screw 272. The visible light movement 23 moves along the focusing screw 272 along with the lens flange 274, and the distance between it and the visible light lens 21 in the direction of the optical axis changes, thereby playing a role in focusing. As shown in Figure 7, the lens barrel 211 of the visible light lens 21 is provided with three positioning pins 2111 (3 are evenly distributed throughout the circle) at the connection between the lens barrel 211 and the lens flange 274. The three positioning pins 2111 are limited in the corresponding three positioning guide grooves 2741. The guide grooves 2741 are arranged along the optical axis to guide the movement direction of the lens flange 274, thereby ensuring that the infrared core 24 can only move parallel to the optical axis relative to the visible light lens 21 under the guiding and limiting action of the guide grooves 2741 and will not rotate.

[0079] Similarly, by turning the knob 271 corresponding to the infrared lens 22 and the infrared movement 24 with your finger, the focusing screw 272 rotates together to drive the lens flange 274 and the visible light movement 24 to move, thereby achieving the function of focusing.

[0080] The housing 40 is designed to be C-shaped, imitating the way a human hand holds the device. That is, the gripping areas 41 on both sides of the housing 40 are C-shaped, making it easier to hold. When a human hand is normally relaxed, the basic positions of the hand that roughly present a C-shape are the center, ulnar deviation, radial deviation, dorsal deviation, and palmar flexion. The center position is the natural position of the hand, and at this position, the wrist is under the best stress. The C-shaped grip ensures that the hand, the product, and the button area 42 are all kept in the middle, ensuring that the wrist is in a straight state and avoiding pressure on the palm tissue. The height of the buttons in the button area 42 conforms to the arc of the human gripping gesture, and the size and shape of the buttons are close to the shape of the user's fingers, making it comfortable to hold and less prone to misoperation. The gripping area 41 can be provided with a textured grip to increase the friction between the palm and the product, thereby achieving an anti-slip effect.

[0081] Referring to Figures 9 to 11 , the eyepiece system 50 includes a rear housing 51 fixedly connected to the outer shell 40. Two sets of eyepieces 52 are mounted on the rear housing 51. Each set of eyepieces 52 is installed from the outside into a corresponding eyepiece hole 511 in the rear housing 51 via an eyepiece flange 53 and a sealing ring 54. The inner side of the eyepiece flange 53 is locked and secured by a guide block 57 and a pressure ring 58. The display screen 55 corresponding to each set of eyepieces 52 is fixed to the eyepiece flange 53 via a screen pressure block 56 and is located in front of the eyepiece 52.

[0082] Specifically, a blocking piece 531 extends outwardly from the circumference of the eyepiece flange 53 . The blocking piece 531 is larger than the eyepiece hole 511 and abuts against the outside of the rear shell 51 , thereby blocking the eyepiece hole 511 and restricting the position of the eyepiece flange 53 in the front-to-back direction. The guide block 57 has a guide hole 571 of the same shape as the eyepiece hole 511 and is arranged on the inner side of the eyepiece hole 511. The connecting end 532 at the front end of the eyepiece flange 53 passes through the eyepiece hole 511 and the guide hole 571, and is connected to the pressure ring 58 by a thread. The rear end face of the pressure ring 58 contacts the front end face of the guide block 57. Since the baffle 531 and the pressure ring 58 of the eyepiece flange 53 are respectively located on the inner and outer sides of the rear shell 51, the installation position of the pressure ring 58 on the eyepiece flange 53 can be adjusted by threading to adjust the tightness between the eyepiece flange 53 and the rear shell 51, so that the eyepiece flange 53 can drive the eyepiece 52 to move in the eyepiece hole 511, adjust the pupil distance, and ensure the visual effect after the pupil distance is adjusted. A locking hole can also be provided on the side wall of the pressure ring 58. A locking pin is inserted into the locking hole to press against the wall of the connecting end 532, preventing the pressure ring 58 from rotating. The pressure ring 58 is locked at its position on the connecting end 532 to prevent loosening after pupil distance adjustment is completed. A scale mark 512 is provided on the outside of the rear housing 51. The scale mark 512 is located between the two eyepiece holes 511 and is used to indicate the current position and movement distance of the eyepiece flange 53 (and the eyepiece 52 therein). For example, the interval between adjacent scale marks on the scale mark 512 can be set to 1 mm. By moving the eyepiece flange 53 in the direction of the arrow, the distance between the two sets of eyepieces 52 can be adjusted with a reference of 1 mm for each scale mark moved. This allows users with different pupil distances to obtain the best visual effect. Since the eyepiece 52 and the corresponding display screen 57 are mounted together on the eyepiece flange 53, when the distance between the two eyepieces 52 is adjusted by moving the eyepiece flange 53, the eyepiece flange 53 drives the display screen 55 to move along the guide holes 571 respectively, thereby ensuring that the screen center of the display screen 55 is always consistent with the optical axis of the eyepiece 52, and the image will not exceed the observation range of the eyepiece due to the adjustment of the pupil distance.

[0083] The guide block 57 can be made of a material such as PTFE (polytetrafluoroethylene), which has wear-resistant and self-lubricating properties to ensure product reliability. The tightness of the pupil distance can be adjusted by the guide block 57 and the pressure ring 58, and the structure is simple to assemble.

[0084] The battery pack 60 houses batteries that power the entire device. In the illustrated embodiment, two 18650mAh batteries are installed. Furthermore, the binocular trifocal telescope 100 can also be powered by an external data cable via port 39. The type of port 39 is not limited to the previously mentioned Type-C and MiniUSB ports; two or more ports can be configured as needed. To achieve lower illumination, the visible light engine 23 must capture infrared light in addition to visible light. Capturing infrared light of varying wavelengths can negatively impact visible light imaging, so a filter that removes unwanted infrared light while retaining the necessary infrared light is required. Typically, an IR-CUT dual filter is used. A set of filters is built into the camera lens assembly. When an infrared sensor outside the lens detects changes in light intensity, the built-in IR-CUT dual filter switch automatically switches based on the external light intensity, optimizing the visible light image. Because the implementation of the IR-CUT dual-filter switch requires a microelectronic motor drive circuit mechanism and two or more filters, and is difficult and expensive to implement, it increases the product's size, weight, power consumption, and cost-effectiveness. Referring to Figures 12 and 13, the visible light lens 21 includes a lens barrel 211, a lens 212 disposed within the barrel, and a dual-bandpass filter 213. The multiple lenses 212 and dual-bandpass filter 213 are arranged along the optical axis. Spacers 214 are provided between adjacent lenses 212 and between the lenses 212 and the dual-bandpass filter 213 to isolate them. The frontmost lens 212 is equipped with a sealing ring 215 and a pressure ring 216 to seal it within the barrel 211. The multiple lenses 212 form a lens group that focuses light and transmits it through the lenses. The dual-bandpass filter 213 filters the light from the front lens 212 and directs it toward the visible light engine 23.

[0085] The dual-bandpass filter 213 is a single filter with two bandpasses. It uses only one filter to intercept two specific bands and can select bands within two or more regions to pass. Please refer to Figure 13. The dual-bandpass filter 213 allows part of the visible light band (first band) and part of the infrared light band (second band) to pass. The first band is the visible light band of 420 to 660 nm, and the pass rate T is more than 50%; the second band is the infrared light band of 930 to 970 nm, and the pass rate T is more than 85%. The dual-bandpass filter 213 achieves dual bandpass through coating. The detailed parameters of the coating requirements of the dual-bandpass filter 213 are as follows:

[0086] 420-620nm: minimum pass rate Tmin ≥ 85%, average pass rate Tave ≥ 90%;

[0087] 650±10nm: pass rate T=50%;

[0088] 700~850nm: pass rate T<3%;

[0089] 930~970nm: pass rate T>85%;

[0090] 1100~1200nm: Maximum pass rate Tmax≤4%.

[0091] The dual-bandpass filter 213 filters the light entering the visible light core 23 so that visible light and infrared light of a specific wavelength band pass through.

[0092] The visible light engine 23 houses an image sensor and an image processing module. The image processing module receives the image signal output by the image sensor in real time and processes it, performing various processing steps, such as white balance, exposure, and color correction. The dual-bandpass filter 213, along with the image processing module within the visible light engine, enables dual-bandpass switching to accommodate daytime and nighttime modes.

[0093] Specifically, in day mode (when used during the day), light in the first band (650nm band range) and the second band (940nm band range) will pass through the dual-bandpass filter 213 and be sensed by the image sensor. After receiving the image signal, the image processing module will filter out the light in the second band through the image algorithm, retaining only the image of the light in the first band to prevent the light in the second band from affecting the color reproduction of the image; in night mode (when used at night), there is almost no light in the first band at night, and basically only light in the second band passes through the dual-bandpass filter 213. The image processing module does not filter the image of the light in the first band when processing the received image signal.

[0094] The image processing module can sense the changes in light and darkness of the external scene through the light sensor to determine whether the external scene is a daytime scene or a nighttime scene, thereby determining whether it is necessary to filter out the light of the second band in the image signal received from the image sensor.

[0095] To enhance the nighttime color imaging of the binocular trifocal telescope 100, an infrared light source can be added to increase the illumination. Specifically, referring to Figures 14 and 15 , the binocular trifocal telescope 100 can be removably mounted with an infrared flashlight 70 on the housing 40. The infrared flashlight 70 is mounted to the bottom of the housing 40 via a flashlight mounting bracket 80.

[0096] The flashlight mounting bracket 80 includes a clamp 81 and a connecting piece 82. The clamp 81 can be mounted on the outer periphery of the infrared flashlight 70. The infrared flashlight 70 is fixed to the clamp 81 by locking the clamp 81. One end of the connecting piece 82 is fixed to the clamp 81, and the other end can be locked to the bottom of the housing 40 by a fastener.

[0097] The infrared flashlight 70 can adopt an IR 940nm fill light flashlight, which emits 940nm infrared light after being powered on. The infrared flashlight 70 is installed at the bottom of the housing 40 and is located below the infrared lens barrel 12 and the infrared lens 22. After being powered on, it emits 940nm infrared light in the target direction along the optical axis parallel to the infrared lens 22, thereby enhancing the light illumination when used at night. The infrared flashlight 70 is an independent component / accessory and can use its own power supply. It does not occupy the power supply of the internal battery compartment 60 and does not affect the battery life. Moreover, the infrared flashlight 70 can be removed from the housing 40, does not occupy the internal space, and can also be removed when not in use to reduce weight.

[0098] In low-light conditions at night, an infrared flashlight 70 can be installed to enhance illumination and provide clear color images. The infrared flashlight 70 can also be disassembled and replaced with different power consumption infrared flashlights, allowing for different illumination distances to suit different scenarios, improving visible light nighttime color imaging and ensuring optical imaging quality.

[0099] The binocular trifocal telescope 100 operates as follows: light entering the binocular tube 10 is focused by the visible light lens 21 and the infrared lens 22, respectively, and then projected onto the visible light engine 23 and the infrared engine 24. The visible light engine 23 and the infrared engine 24 then sense and image the visible light and infrared images. The image data of the visible light and infrared images is input to the image processing chip on the system chip board 30 for data processing. The laser rangefinder 25 transmits and receives laser light through the laser window 14, and the laser rangefinder 25 processes the data to obtain the measurement results. The final data is output to the display screen 55 of the eyepiece system 50. Through the eye mask of the eyepiece system 50, the human eye can see the image information and interface information on the display screen 55.

[0100] During use, the focusing mechanism 27 can be adjusted to focus the visible light imaging and infrared imaging respectively; the image effect of observation can be adjusted by adjusting the eyepiece diopter and pupil distance of the eyepiece system 50; the infrared flashlight 70 is connected and installed through the flashlight connecting bracket 80, which can be used to enhance the visible light imaging effect when the lighting effect is poor at night.

[0101] The present application provides a binocular three-light telescope that integrates visible light imaging, high-sensitivity infrared thermal imaging and laser ranging, and can be used as a portable binocular three-light handheld telescope suitable for all scenarios such as outdoor exploration, hunting, and field safety protection.

[0102] The binocular three-light telescope of the present application has a manual focusing function for visible light and infrared objective lenses. The focusing function is achieved by adjusting the relative position of the movement (visible light movement, infrared movement) and the lens (visible light lens, infrared lens). When the knob is turned with a finger, the focusing screw will rotate together. The rotation of the focusing screw will drive the lens flange and the movement relative to the lens, thereby achieving the function of focusing. By eliminating the internal focusing of the lens, the lens structure is simplified and the weight is reduced. The entire functional structure does not require additional space for the entire machine. The positions that need to be sealed on the functional mechanism only require ordinary sealing rings. During the use of the entire machine, focusing can be completed with a single finger, which is very convenient.

[0103] The binocular trifocal telescope described in this application features adjustable interpupillary distance. This is achieved by securing the eyepiece to the eyepiece flange and adding a guide block. The tightness of the interpupillary distance can be adjusted using the guide block's pressure ring. The structure is simple to assemble, requiring no screws or complex parts. The overall design is unrestricted and can be designed in various shapes without affecting the internal layout, leaving more space for additional functional components. A sealing ring installed on the eyepiece flange ensures a high level of sealing.

[0104] The binocular trifocal telescope of this application has day and night functions. It uses a dual-bandpass filter to replace the IR-CUT dual filter switch. The day mode image processing module filters out infrared light to obtain a clear image. In night mode, it can sense infrared light to obtain a lower illumination. It has the characteristics of high cost performance, small size, simple structure, and high stability. It can improve the effect of night color imaging and ensure the quality of optical imaging. To improve the effect of night color imaging, an infrared flashlight can be used to enhance the light illumination. Then, an image processing algorithm is used to optimize the visible light imaging effect, improving the effect of visible light night color imaging and ensuring the quality of optical imaging.

[0105] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0106] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A binocular three-light telescope, characterized in that: include: A binocular lens barrel (10) comprising a visible light lens barrel (11), an infrared lens barrel (12) and a laser window (14); The core assembly (20) comprises a visible light core group, an infrared core group and a laser rangefinder (25), wherein the visible light core group receives visible light through the visible light lens barrel (11) and generates a visible light image, the infrared core group receives infrared light through the infrared lens barrel (12) and generates an infrared image, and the laser rangefinder (25) receives laser light through the laser window (14) and calculates a distance measurement result; A system chip board (30) is respectively connected to the visible light core group, the infrared core group and the laser rangefinder (25) for signal processing and fusing the visible light image and the infrared image, and receiving the ranging result; A housing (40) having front and rear ends connected to the binocular tube (10) and the eyepiece system (50) respectively, forming a space for accommodating the core assembly (20) and the system chip board (30); The eyepiece system (50) includes two eyepieces (52), each of the eyepieces (52) is provided with a corresponding display screen (55), and the display screen (55) is connected to the system chip board (30) by signal.

2. The binocular three-light telescope according to claim 1, characterized in that: The system chip board (30) is integrated with at least one of a battery compartment board (31), a display screen power board (32), a key board (33), a microphone board (34), a GPS module (35), an electronic compass (36), a WiFi module (37), and a debugging interface board (38).

3. The binocular three-light telescope according to claim 1, characterized in that: Both sides of the housing (40) are gripping areas (41) in a C-shaped arc, and the housing (40) is provided with a button area (42) between the two gripping areas (41).

4. The binocular three-light telescope according to claim 1, characterized in that: The visible light core group includes a visible light lens (21) and a visible light core (23), wherein the visible light lens (21) corresponds to the visible light lens barrel (11), and the visible light core (23) senses the light projected by the visible light lens (21) and generates a visible light image; the infrared core group includes an infrared lens (22) and an infrared core (24), wherein the infrared lens (22) corresponds to the infrared lens barrel (12), and the infrared core (24) senses the light projected by the infrared lens (22) and generates an infrared image.

5. The binocular three-light telescope according to claim 4, characterized in that: The core assembly (20) further comprises a lens bracket (26), and the visible light core (23) and the infrared core (24) are respectively mounted on the lens bracket (26) via a focusing mechanism (27).

6. The binocular three-light telescope according to claim 4, characterized in that: The focusing mechanism (27) comprises a focusing screw (272), a focusing screw bracket (273) and a lens flange (274); the focusing screw (272) is arranged in a direction parallel to the optical axis; the visible light engine (23) and the infrared engine (24) are respectively fixedly connected to the corresponding lens flanges (274); one end of the focusing screw bracket (273) is fixedly connected to the lens bracket (26), and the other end is rotatably connected to the focusing screw (272); the lens flange (274) is threadedly connected to the end of the focusing screw (272), so that when the focusing screw (272) rotates, the lens flange (274) can move relative to the visible light lens (21) or the infrared lens (22) along the optical axis.

7. The binocular three-light telescope according to claim 6, characterized in that: The focusing mechanism (27) further includes an anti-backlash spring (275); a threaded hole corresponding to the focusing screw (272) is provided on the lens flange (274); the anti-backlash spring (275) is placed in the threaded hole; and the end of the focusing screw (272) abuts against the anti-backlash spring (275).

8. The binocular three-light telescope according to claim 6, characterized in that: The focusing screw bracket (273) is connected to the reduced diameter portion of the focusing screw (272), and a retaining spring (276) is respectively installed at both ends of the connection portion between the focusing screw bracket (273) and the focusing screw (272) so as to constrain the axial position of the focusing screw (272) at the connection portion with the adjusting screw bracket (273).

9. The binocular three-light telescope according to claim 6, characterized in that: A positioning guide groove (2741) is provided on the lens flange (274) along the corresponding optical axis direction, and a positioning pin is protruded on the lens barrel of the corresponding visible light lens (21) and the infrared lens (22). The positioning pin is limited in the corresponding positioning guide groove (2741) so that the lens flange (274) can move relative to the lens barrel along the corresponding optical axis direction.

10. The binocular three-light telescope according to claim 4, characterized in that: The visible light lens (21) comprises a lens (212) and a dual-bandpass filter (213), wherein the dual-bandpass filter (213) allows light of a first wavelength band and light of a second wavelength band to pass through, wherein the first wavelength band is a visible light wavelength band and the second wavelength band is an infrared wavelength band; the visible light core (23) comprises an image sensor and an image processing module, wherein the image processing module is connected to the image sensor to receive an image signal sensed by the image sensor; The binocular trifocal telescope has a day mode and a night mode. In the day mode, the image processing module filters the image of the second band of light in the image signal from the image sensor and retains only the image of the first band of light. In the night mode, the image processing module retains both the image of the first band of light and the image of the second band of light.

11. The binocular three-light telescope according to claim 10, characterized in that: The first wavelength range is 420-660 nm, and the second wavelength range is 930-970 nm; the dual-bandpass filter (213) has a pass rate of more than 50% for light in the first wavelength range, and a pass rate of more than 85% for light in the second wavelength range.

12. The binocular three-light telescope according to claim 10, characterized in that: The image processing module determines whether the mode is the day mode or the night mode through a light sensor that senses changes in light brightness, and filters out the image of the light in the second wavelength band in the image signal received from the image sensor when in the day mode.

13. The binocular three-light telescope according to claim 10, characterized in that: An infrared flashlight (70) is detachably mounted on the bottom of the housing (40). When powered on, the infrared flashlight (70) emits infrared light in a direction parallel to the optical axis of the infrared lens (22).

14. The binocular three-light telescope according to claim 13, characterized in that: A battery is provided inside the infrared flashlight (50), and the infrared flashlight (50) adopts a 940nm infrared emitting tube.

15. The binocular three-light telescope according to claim 13, characterized in that: The infrared flashlight (70) is mounted on the housing (40) via a flashlight mounting frame (80). The flashlight mounting frame (80) comprises a hoop (81) and a connecting piece (82). The hoop (81) is sleeved on the periphery of the infrared flashlight (70). One end of the connecting piece (82) is fixed to the hoop (81), and the other end is locked to the housing (40) via a fastener.

16. The binocular three-light telescope according to claim 1, characterized in that: The eyepiece system (50) further comprises a rear shell (51), wherein two eyepiece holes (511) are provided on the rear shell (51), each set of the eyepieces (52) is fixed from the outside to the corresponding eyepiece holes (511) on the rear shell (51) via an eyepiece flange (53), and each display screen (55) is fixed to the corresponding eyepiece flange (53).

17. The binocular three-light telescope according to claim 16, characterized in that: The eyepiece system (50) further comprises a pressure ring (58), wherein the pressure ring (58) is connected to the inner side of the corresponding eyepiece flange (53) via a thread, and the tightness between the eyepiece flange (53) and the eyepiece hole (511) can be adjusted by adjusting the installation position of the pressure ring (58) on the eyepiece flange (53).

18. The binocular three-light telescope according to claim 17, characterized in that: The eyepiece system (50) further comprises a guide block (57), wherein the guide block (57) has a guide hole (571) having the same shape as the eyepiece hole (511), and the guide block (57) is arranged on the inner side of the eyepiece hole (511); a baffle (531) extends outwardly from the circumference of the eyepiece flange (53), wherein the baffle (531) is larger than the eyepiece hole (511) and abuts against the outer side of the rear shell (51) to block the eyepiece hole (511) from the outside and restrict the position of the eyepiece flange (53); the eyepiece flange (53) is provided with a connecting end (532), wherein the connecting end (532) passes through the eyepiece hole (511) and the guide hole (571) and is connected to the pressure ring (58) by a thread, and the rear end face of the pressure ring (58) contacts the corresponding front end face of the guide block (57).

19. The binocular three-light telescope according to claim 18, characterized in that: The guide block (57) is made of a self-lubricating wear-resistant material, and a locking hole is provided on the side wall of the pressure ring (58) for a locking pin to be inserted into the locking hole and pressed against the wall of the connecting end (532).

20. The binocular three-light telescope according to claim 16, characterized in that: The outer side of the rear shell (51) is provided with scale markings (512), the scale markings (512) are located between the two eyepiece holes (511), and adjacent scale markings of the scale markings (512) are equally spaced to indicate the distance that the eyepiece flange (53) and the eyepiece (52) move relative to the rear shell (51).

Images