Multi-mode binocular handheld optical device

Abstract

A multi-mode binocular handheld optical device comprises a binocular white light assembly (10), a laser assembly (20), an infrared assembly (30) and a display module (40). The binocular white light assembly (10) comprises two monocular imaging modules (16) arranged corresponding to a left eye and a right eye respectively, and is used for receiving a visible light signal in a target view field and then forming a white light image at the rear end of a visible light path; the infrared component (30) is electrically connected with the display module (40) and is used for receiving the infrared light signal, converting the infrared light signal into an infrared image signal and sending the infrared image signal to the display module (40) to display a corresponding infrared image; the laser assembly (20) is electrically connected with the display module (40) and comprises a laser emitting module and a laser receiving module, and a laser emitting light path and a laser receiving light path are coaxial with visible light paths of the corresponding monocular imaging modules (16) respectively; the laser emission module is used for emitting pulse laser, a laser signal reflected by a detection target is used for calculating distance information of the detection target and sending the distance information to the display module (40) for display, and the distance information and / or an infrared image displayed in the display module (40) are / is fused with a white light image.

Description

Multi-mode binocular handheld optical device Technical Field

[0001] The present application relates to the field of image processing, and in particular to a multi-mode binocular handheld optical device. Background Art

[0002] Telescopes, as traditional reconnaissance and target search devices, play an important role in applications such as aiming and hunting. Currently, mainstream handheld optical devices on the market, such as handheld telescopes, are mostly single-optical white-light telescopes with limited functionality, making them unable to meet the growing demand for handheld telescopes.

[0003] For example, to enhance the target search capabilities of handheld telescopes, a white-light telescope with laser ranging functionality has been proposed. This approach superimposes a laser ranging structure that implements laser emission, reception, and ranging calculations on the existing white-light telescope structure. However, this superimposed design increases the size of the handheld telescope, hindering the need for easy portability. Furthermore, with the widespread adoption of thermal imaging sensors, thermal imaging telescopes are becoming increasingly popular in the consumer market. Creating a clearly differentiated white-light telescope that combines thermal imaging with a telescope is a pressing issue in the development of this field. Technical issues

[0004] In order to solve the existing technical problems, the embodiments of the present invention provide a multi-spectral fusion multi-mode handheld optical device with a compact structure, a small overall size, and easy portability. Technical Solutions

[0005] An embodiment of the present invention provides a multi-mode binocular handheld optical device, comprising a binocular white light component, a laser component, an infrared component and a display module; the binocular white light component comprises two monocular imaging modules respectively corresponding to the left eye and the right eye, for receiving visible light signals within the target field of view and then generating white light images at the rear ends of their respective corresponding visible light paths; the infrared component is electrically connected to the display module, for receiving infrared light signals within the target field of view, converting them into infrared image signals, and then sending them to the display module to display the corresponding infrared images; the laser component is electrically connected to the display module, and comprises two monocular imaging modules respectively corresponding to the visible light signals within the target field of view and the infrared image signals. The laser emitting module and the laser receiving module are respectively arranged in correspondence with the visible light path, and are used for laser emission and reception, and the laser emitting optical path and the laser receiving optical path are respectively coaxial with the visible light optical path of the corresponding monocular imaging module; wherein, the laser receiving module emits a pulsed laser to the detection target, and the laser signal reflected back by the detection target is received by the laser receiving module and is used to calculate the distance information of the detection target, and the distance information is sent to the display module for display; the distance information and / or the infrared image displayed in the display module is finally transmitted to the rear end of the visible light path so as to be fused with the white light image.

[0006] In which, the laser receiving module includes a laser receiving objective lens arranged at the front end of the corresponding visible light path, and a first image relay spectrometer is also provided in the corresponding visible light path, which is used to separate the visible light signal from the laser signal received by the laser receiving objective lens; wherein, after the visible light signal is transmitted through the first image relay spectrometer, it forms a white light image at the rear end of the corresponding visible light path, and the laser signal received by the laser receiving objective lens is reflected by the first image relay spectrometer and deviates from the corresponding visible light path and is used to calculate distance information.

[0007] The display module is located on a light incident side of the first image relay beam splitter. The distance information and / or the infrared image displayed on the display module is incident on the first image relay beam splitter in the form of a light signal, and is reflected by the first image relay beam splitter to the rear end of the visible light path and merged with the white light image.

[0008] The multi-mode binocular handheld optical device further includes a projection module disposed between the first image relay beam splitter and the display module. The projection module is configured to project the distance information and / or the infrared image displayed on the display module onto the first image relay beam splitter in the form of a light signal, which is then reflected by the first image relay beam splitter to the rear end of the visible light path.

[0009] Among them, the infrared component includes an infrared objective lens group and an infrared core arranged in sequence along the infrared light path, and the infrared core is connected to the display module; the infrared objective lens group is used to collect infrared light signals within the target field of view, and the infrared core is used to convert the infrared light signals into electrical signals and send them to the display module to display the corresponding infrared image.

[0010] The display module is a transparent display screen arranged in the visible light path of any monocular imaging module; the visible light signal is transmitted through the transparent display screen and fused with the distance information and / or the infrared image displayed on the transparent display screen.

[0011] The laser emission module includes a laser emitter provided on one side of the corresponding visible light path, and a second image relay beam splitter is provided in the corresponding visible light path in the emission direction of the pulsed laser emitted by the laser emitter. The pulsed laser emitted by the laser emitter is incident on the second image relay beam splitter, and after being reflected by the second image relay beam splitter, it is emitted toward the detection target along the corresponding visible light path in the opposite direction to the incident direction of the visible light signal. The laser signal reflected back by the detection target is received by the laser receiving module provided in the other visible light path. The visible light signal within the target field of view is incident on the second image relay beam splitter along the corresponding visible light path, and after being transmitted through the second image relay beam splitter, it forms a white light image at the rear end of the corresponding visible light path.

[0012] Among them, the monocular imaging module includes a white light objective lens located at the front end of the visible light path and an eyepiece located at the rear end of the visible light path, and the laser emission module also includes a laser emission objective lens located at the front end corresponding to the visible light path, and the laser emission objective lens and the laser receiving objective lens are respectively coaxial with the corresponding white light objective lens.

[0013] In which, the laser receiving module also includes a photodetector arranged on a light-emitting side of the first image-relaying spectroscope and a laser signal processor electrically connected to the photodetector; the laser signal reflected back by the detection target is collected by the laser receiving objective lens, emitted toward the first image-relaying spectroscope along the corresponding visible light path, and reflected toward the photodetector by the first image-relaying spectroscope. The photodetector converts the laser signal reflected back by the detection target into an electrical signal and transmits it to the laser signal processor, which calculates the distance information between the detection target and the detection target.

[0014] The first image-relaying spectroscope is composed of a Behan prism and a half pentaprism; the Behan prism includes an incident surface, a first edge reflection surface, an exit surface, a second edge reflection surface, and an intermediate reflection surface arranged in sequence, and located between the incident surface and the exit surface and inclined; the incident surface faces the incident direction of the visible light, the exit surface is parallel to the incident surface and is located at the rear end of the visible light path, and the second edge reflection surface is connected to the half pentaprism; the half pentaprism is arranged on one side of the Behan prism close to the infrared component On the side, the half pentaprism includes a light incident surface and a light exit surface, and the light incident surface faces the display module; wherein, the visible light signal is incident from the incident surface into the Biehan prism, is transmitted through the Biehan prism and is emitted from the exit surface to form a white light image at the rear end of the corresponding visible light path; after the laser signal is incident from the incident surface into the Biehan prism, it is reflected multiple times by the intermediate reflection surface, the first edge reflection surface, and the incident surface and then emitted toward the half pentaprism, and is emitted from the light exit surface of the half pentaprism and is used to calculate distance information.

[0015] Among them, the multi-mode binocular handheld optical device also includes a main control board connected to the infrared component, the laser component and the display module respectively, and the main control board receives the electrical signal corresponding to the infrared light signal sent by the infrared component and / or the distance information sent by the laser component, and controls the display module to display the corresponding infrared image and / or the distance information.

[0016] Wherein, a filtering lens cover is provided on the outer side of the front end of the visible light path of each monocular imaging module, which is used to filter out the visible light signal and allow the laser signal to pass through.

[0017] Among them, the working modes of the multi-mode binocular handheld optical device include one of the following: a white light mode in which only the binocular white light component works to form a white light image, an infrared mode in which only the infrared component works to form an infrared image, a dual-light fusion mode in which both the white light mode and the infrared mode are turned on, a white light ranging mode in which both the white light mode and the laser ranging mode are turned on, an infrared ranging mode in which both the infrared mode and the laser ranging mode are turned on, and a dual-light fusion ranging mode in which the white light mode, the infrared mode, and the laser ranging mode are all turned on.

[0018] Wherein, the multi-mode binocular handheld optical device is a binocular handheld telescope. Beneficial effects

[0019] The multi-mode binocular handheld optical device provided in the above embodiment includes a binocular white light component, an infrared component and a laser component. The laser component includes a laser emitting module and a laser receiving module respectively arranged corresponding to the two monocular imaging modules, wherein the laser emitting optical path and the laser receiving optical path are respectively arranged to share the optical path with the two visible light optical paths in the binocular white light component, so as to make the structure more compact while realizing the multi-mode of the handheld optical device, effectively reduce the overall volume, and make the whole device small and easy to carry; secondly, the display module is connected to the laser component and the infrared component respectively, the infrared component converts the infrared light signal into an electrical signal of the infrared image and sends it to the display module for display, and the laser component can send the distance information of the detected target to the display module for display. By fusing the distance information and / or the infrared image displayed in the display module with the white light image imaged by the visible light path in the binocular white light component, the infrared image and / or the distance information is superimposed on the white light image, the structure is compact, and the target highlighting ability can be enhanced, which is convenient for observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic diagram of a multi-mode binocular handheld optical device according to an embodiment;

[0021] FIG2 is a schematic structural diagram of a multi-mode binocular handheld optical device according to another embodiment;

[0022] FIG3 is a schematic diagram of a multi-mode binocular handheld optical device according to another embodiment;

[0023] FIG4 is a schematic diagram of the right eye imaging optical path in one embodiment, wherein the laser emission optical path partially overlaps with the right eye imaging optical path;

[0024] FIG5 is a schematic diagram of the left eye imaging optical path in one embodiment, wherein the laser receiving optical path partially overlaps with the left eye imaging optical path;

[0025] FIG6 is a schematic diagram of the overlapping portion of the infrared imaging optical path and the laser ranging optical path in one embodiment.

[0026] Component Symbol Description:

[0027] Binocular white light assembly 10, left eye white light channel 111, right eye white light channel 112, white light objective lens 13, first image relay beam splitter 15a, second image relay beam splitter 15b, incident surface 151, exit surface 152, intermediate reflection surface 153, first edge reflection surface 154, second edge reflection surface 157, light incident surface 155, light exit surface 156, monocular imaging module 16, left eye imaging module 161, right eye imaging module 162, eyepiece 18, laser assembly 20, laser emitter 21, laser emitting objective lens 22, laser signal processor 23, photodetector 24, laser receiving objective lens 25, infrared assembly 30, infrared channel 31, infrared objective lens group 33, infrared movement 34, main control board 60, display module 40, OLED display screen 41, transparent display screen 42, projection module 50 Modes for Carrying Out the Invention

[0028] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art in the field of the present invention. The terms used herein in the specification of the present invention are intended only to describe specific embodiments and are not intended to limit the implementation of the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating positions or locations, are based on the positions or locations shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may 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 these terms in this utility model based on the specific circumstances.

[0032] In the hunting field, traditional white light binoculars are gradually unable to meet user needs. With the development of thermal imaging sensor technology, thermal imaging binoculars are gradually becoming popular among users. Currently, the available binocular handheld binoculars can be divided into the following types:

[0033] One type is an integrated infrared and digital telescope, which is mainly composed of one infrared camera and one digital camera, dual display screens, and binoculars; however, this type of equipment cannot be used without power, has many electronic components and is complicated to maintain, making it impossible to truly view the real scene.

[0034] One type is the laser ranging telescope, which is mainly composed of a laser ranging structure that combines binoculars to realize laser emission, reception and ranging calculation; however, the simple superposition design makes the monocular handheld telescope products too large, which affects portability.

[0035] One type is a dual-spectrum telescope, which is mainly composed of a white light telescope and an infrared telescope. The white light telescope is composed of a white light objective lens, an eyepiece 1, etc., and the infrared telescope is composed of an infrared objective lens, an infrared detector, an OLED display, an eyepiece 2, etc.; however, for the dual-spectrum telescope product that supports both white light and infrared observation targets, the white light image and the infrared image are observed using separate eyepiece 1 and eyepiece 2. Not only is the product bulky, but the observation comfort of the left eye and the right eye seeing the white light image and the infrared image respectively is poor.

[0036] Please refer to Figure 1, which shows a multi-mode binocular handheld optical device provided in an embodiment of the present application, including a binocular white light component 10, a laser component 20, an infrared component 30 and a display module 40; the binocular white light component 10 includes two monocular imaging modules 16 respectively provided for the left eye and the right eye. For the convenience of distinction and description, they are referred to as the left eye imaging module 161 and the right eye imaging module 162 in the following description. It should be noted that the descriptions of the left eye imaging module 161 and the right eye imaging module 162 in the embodiment of the present application are interchangeable, that is, the description of the left eye imaging module 161 in the embodiment of the present application can actually be replaced by the right eye imaging module 162, and correspondingly, the description of the right eye imaging module 162 is replaced by the left eye imaging module 161. The left-eye imaging module 161 and the right-eye imaging module 162 are respectively configured to receive visible light signals within the target field of view and generate white light images at the rear ends of their corresponding visible light paths. The infrared component 30 is electrically connected to the display module 40 and is configured to receive infrared light signals within the target field of view, convert them into infrared image signals, and then transmit them to the display module 40 for displaying the corresponding infrared images. The laser component 20 is electrically connected to the display module 40 and includes a laser emitting module and a laser receiving module, each corresponding to the two monocular imaging modules 16, for laser emission and reception, respectively. The laser emitting and laser receiving optical paths are coaxial with the visible light paths of the corresponding monocular imaging modules. The laser emitting module is configured to emit pulsed laser light toward the target. The laser signal reflected from the target is received by the laser receiving module and used to calculate the distance information of the target. The distance information is then transmitted to the display module 40 for display. The distance information and / or the infrared image displayed on the display module 40 are ultimately transmitted to the rear end of the visible light path for fusion with the white light image.

[0037] The detection target may refer to an observed object within the target field of view, such as an animal in a hunting scene. The binocular white light assembly 10 refers to an optical assembly that collects visible light signals within the target field of view to form a corresponding white light image. For example, in the case of a binocular handheld telescope, the binocular white light assembly 10 may refer to a white light binocular assembly of the binocular handheld white light telescope.

[0038] Referring to FIG. 2 , the human eye observation position can be located at the rear end of the visible light path of the binocular white light assembly 10. The left-eye imaging module 161 and the right-eye imaging module 162 can each include an eyepiece 18 located at the end of the visible light path. The imaging plane of the white light image is located in front of the eyepiece 18, respectively. The left eye and the right eye can observe the image on the imaging plane through the eyepiece 18 of the left imaging module 161 and the right imaging module 162, respectively. By arranging the laser transmission optical path of the laser transmission module and the laser reception optical path of the laser reception module to be coaxial with the two visible light paths of the binocular white light assembly 10, the overall product structure is made more compact and the white light imaging structure of existing binocular white light optical devices can be used, simplifying product design costs.

[0039] In the above embodiment, the multi-mode binocular handheld optical device includes a binocular white light component 10, an infrared component 30 and a laser component 20. The laser component 20 includes a laser emitting module and a laser receiving module respectively arranged corresponding to the two monocular imaging modules 16. The laser emitting optical path and the laser receiving optical path are respectively arranged to share the optical path with the two visible light optical paths in the binocular white light component 10. Under the premise of realizing the multi-mode of the handheld optical device, the structure can be made more compact, the overall volume can be effectively reduced, and the whole device is compact and easy to carry. Secondly, the display module 40 is connected to the laser component 20 and the infrared component 30 respectively. The infrared component 30 converts the infrared light signal into an electrical signal of an infrared image and sends it to the display module 40 for display. The laser component 20 can send the distance information of the detected target to the display module 40 for display. By fusing the distance information and / or the infrared image displayed in the display module 40 with the white light image imaged by the visible light path, the infrared image and / or the ranging information is superimposed on the white light image. The structure is compact and the target highlighting ability can be enhanced for easy observation.

[0040] In some embodiments, the laser receiving module includes a laser receiving objective lens 25 arranged at the front end of the visible light path, and a first image relay beam splitter 15a is provided in the visible light path for separating the visible light signal from the laser signal received by the laser receiving objective lens 25. The visible light signal can be transmitted through the first image relay beam splitter 15a and imaged on the imaging surface behind the first image relay beam splitter 15a. When the laser signal passes through the first image relay beam splitter 15a, it is reflected by the first image relay beam splitter 15a and deviates from the visible light path, so that the laser signal can be used to calculate distance information after separation. In this way, by setting the first image relay beam splitter 15a in the visible light path, the first image relay beam splitter 15a is used to separate the laser signal and the visible light signal incident into it along the visible light path, so that the laser receiving optical path can share the visible light path of the binocular white light component 10 while retaining the independent imaging of the white light image and the laser ranging functions and simplifying the product structure.

[0041] Optionally, the display module 40 is located on a light-entering side of the first image-relaying beam splitter 15a. The distance information and / or the infrared image displayed on the display module 40 are incident on the first image-relaying beam splitter 15a in the form of optical signals, reflected by the first image-relaying beam splitter 15a to the rear end of the visible light path, and fused with the white light image. Specifically, the display module 40 can be an OLED (Organic Light-Emitting Diode) display screen 41, which is located on one side of the visible light path and corresponds to a light-entering side of the first image-relaying beam splitter 15a. The distance information and / or the infrared image displayed on the display module 40 are incident on the first image-relaying beam splitter 15a in the form of optical signals, forming a fused optical path that superimposes the distance measurement information of the laser assembly 20 and the infrared image formed by the infrared assembly 30 on the white light image of the binocular white light assembly 10. That is, a fused optical path of the distance information and the infrared image, which is parallel to the visible light path. The distance information and / or the optical signal of the infrared image displayed on the OLED display screen 41 is reflected by the first image relay beam splitter 15 a to the rear end of the visible light path and merged with the white light image.

[0042] Among them, the multi-mode binocular handheld optical device includes multiple working modes, such as white light mode, laser ranging mode, infrared mode, white light ranging mode, infrared ranging mode, dual-light fusion mode, and dual-light fusion ranging mode.

[0043] The white light mode means that neither the laser component 20 nor the infrared component 30 is working, and the target is observed and aimed only through the binocular white light component 10. The visible light signal in the target field of view is transmitted along the two visible light paths of the binocular white light component 10 respectively. In the visible light path provided with the first image-relaying spectroscope 15a, the visible light signal is transmitted through the first image-relaying spectroscope 15a and is imaged at the rear end of the visible light path. The left-eye imaging module 161 and the right-eye imaging module 162 respectively form a left-eye white light image and a right-eye white light image on the imaging surfaces at the rear ends of the corresponding visible light paths. The human eye directly observes the left-eye white light image and the right-eye white light image to complete the binocular white light image fusion.

[0044] The laser ranging mode means that both the binocular white light component 10 and the infrared component 30 are not working, the laser emitting module emits a pulsed laser to the detection target, the laser signal reflected back by the detection target is received by the laser receiving module, and is transmitted along the visible light path where the laser receiving module is located to the first image relay beam splitter 15a. The laser signal is deviated from the visible light path by the first image relay beam splitter 15a by the splitting effect of the first image relay beam splitter 15a, and the laser signal separated from the visible light signal is used to calculate the distance information of the detection target and displayed on the display module 40; or, after the laser component 20 displays the measured distance information on the display module 40, the distance information displayed on the display module 40 is incident on the first image relay beam splitter 15a along the fusion light path in the form of a light signal, and is reflected by the first image relay beam splitter 15a by the beam combining effect of the first image relay beam splitter 15a and overlaps with the visible light path again, and is displayed on the imaging surface at the rear end of the visible light path. The corresponding distance information is displayed. It should be noted that a second image relay beam splitter 15b is further provided in the visible light path corresponding to the laser emission module, and the display module 40 can also be arranged corresponding to the second image relay beam splitter 15b. After the laser assembly 20 displays the measured distance information on the display module 40, the distance information displayed on the display module 40 is incident on the second image relay beam splitter 15b along the fusion light path in the form of an optical signal. Utilizing the beam combining effect of the second image relay beam splitter 15b, after being reflected by the second image relay beam splitter 15b, it overlaps with the visible light path again, and the corresponding distance information is displayed on the imaging surface at the rear end of the visible light path. For the sake of simplicity, the following description of this application is based on the example of the corresponding arrangement of the display module 40 and the first image relay beam splitter 15a. However, the relationship between the display module 40 and the first image relay beam splitter 15a can be replaced by the relationship between the display module 40 and the second image relay beam splitter 15b, which should also fall within the scope of protection of this application.

[0045] The white light ranging mode means that the infrared component 30 is not working, and the distance information measured by the laser component 20 can be displayed on the display module 40. The human eye can not only see the white light detection target through the eyepiece 18 of the binocular white light component 10, but also read the distance of the detection target from the display module 40. Alternatively, the white light ranging mode means that after the laser component 20 displays the measured distance information on the display module 40, the distance information displayed on the display module 40 is incident on the first image relay beam splitter 15a along the fusion optical path in the form of an optical signal. After being reflected by the first image relay beam splitter 15a, it is again overlapped with the visible light path, and the corresponding distance information is displayed on the imaging surface at the rear end of the visible light path. The distance information is superimposed on the image of the white light detection target, and the human eye can directly observe the white light detection target with the distance information through the eyepiece 18 of the binocular white light component 10.

[0046] In infrared mode, the binocular white light component 10 and the laser component 20 are both inoperative. The infrared component 30 collects infrared light signals within the target field of view and converts them into electrical signals, which are then sent to the display module 40 for display. The infrared image displayed on the display module 40 is incident on the first image relay beam splitter 15a along the fusion optical path in the form of an optical signal. After being reflected by the first image relay beam splitter 15a, it coincides with the visible light path at the rear end of the first image relay beam splitter 15a. The corresponding infrared image is displayed on the imaging surface at the rear end of the visible light path, and the human eye can see the infrared detection target through the eyepiece 18.

[0047] In the infrared ranging mode, the binocular white light assembly 10 is not working, the infrared image output by the infrared assembly 30 is displayed on the display module 40, and the distance information measured by the laser assembly 20 can also be displayed on the display module 40. The infrared image superimposed with the distance information displayed on the display module 40 is reflected and projected onto the imaging surface of the white light image through the first image relay spectrometer 15a. The human eye can directly observe the infrared detection target with distance information through the eyepiece 18 of the binocular white light assembly 10.

[0048] The dual-light fusion mode means that the laser component 20 is not working, and the infrared image output by the infrared component 30 is displayed on the display module 40. The infrared image displayed on the display module 40 is reflected and projected onto the imaging surface at the rear end of the visible light path through the first image-relaying spectroscope 15a. It is fused with the image of the visible light signal passing through the first image-relaying spectroscope 15a on the imaging surface. The human eye directly observes the fused image through the eyepiece 18 of the binocular white light component 10. The infrared image can be highlighted in areas with high heat, allowing users to better find and aim at targets.

[0049] The dual-light fusion ranging mode means that the binocular white light component 10, the infrared component 30 and the laser component 20 are all involved in the operation. The infrared image output by the infrared component 30 is displayed on the display module 40, and the distance information measured by the laser component 20 can also be displayed on the display module 40. The infrared image superimposed with the distance information displayed on the display module 40 is reflected and projected onto the imaging surface at the rear end of the visible light path through the first image relay spectrometer 15a, and is fused with the white light image of the visible light signal passing through the first image relay spectrometer 15a on the imaging surface. The human eye can directly observe the dual-light fusion image with distance information through the eyepiece 18 of the binocular white light component 10.

[0050] Optionally, the multi-mode binocular handheld optical device further includes a projection module 50 disposed between the first image relay beam splitter 15a and the display module 40. The projection module 50 is configured to project the distance information and / or infrared image displayed on the display module 40 onto the first image relay beam splitter 15a in the form of an optical signal, which is then reflected by the first image relay beam splitter 15a to the rear end of the visible light path. The projection module 50 is disposed directly opposite the display module 40, and the display module 40, the projection module 50, and the light-entering side of the first image relay beam splitter 15a collectively form a fused optical path. When the infrared mode is on, the infrared image displayed in the display module 40 is projected by the projection module 50 in the form of an optical signal and incident on the first image relay beam splitter 15a. The infrared image is then reflected by the first image relay beam splitter 15a toward the rear end of the corresponding visible light path, and is ultimately imaged on the imaging surface at the rear end of the corresponding visible light path. When both the white light mode and the infrared mode are on simultaneously, the projection module 50 projects the infrared image displayed in the display module 40 toward the first image relay beam splitter 15a, where it is merged with the white light image imaged on the imaging surface at the rear end of the corresponding visible light path. Optionally, the projection module 50 includes a projection condenser directly opposite the display module 40 and a plurality of projection reflectors located on the side of the projection condenser away from the display module 40. After the optical signal of the image displayed on the display module 40 is converged by the projection condenser, multiple projection reflectors cooperate to change the output path of the optical signal of the image emitted from the projection condenser, reflecting the optical signal of the image displayed on the display module 40 toward the first image relay beam splitter 15a, thereby achieving the purpose of the projection module 50 projecting the image displayed on the display module 40 onto the first image relay beam splitter 15a. When the display module 40 and the second image relay beam splitter 15b are configured correspondingly, the projection module 50 is located between the second image relay beam splitter 15b and the display module 40, and is used to project the distance information and / or infrared image displayed on the display module 40 as an optical signal onto the second image relay beam splitter 15b. The optical signal is then reflected by the second image relay beam splitter 15b to the rear end of the corresponding visible light path. The details are not further described. In this embodiment, the configuration of the projection module 50 can more accurately adjust the transmission direction of light in the fused light path, reducing light loss.

[0051] Optionally, the infrared assembly 30 includes an infrared objective lens group 33 and an infrared core 34 arranged in sequence along the infrared optical path. The infrared core 34 is connected to the display module 40. The infrared objective lens group 33 is used to collect infrared light signals within the target field of view, and the infrared core 34 is used to convert the infrared light signals into electrical signals and send them to the display module 40 to display the corresponding infrared image. The multi-mode binocular handheld optical device can define an infrared channel 31 through an infrared lens barrel. An infrared light path is formed within the infrared channel 31. An infrared light entrance window can be provided at the front end of the infrared channel 31. The infrared objective lens group 33 is disposed at a position corresponding to the infrared light entrance window. The infrared objective lens group 33 and the infrared core 34 are sequentially disposed in the infrared light path. The infrared objective lens group 33 can filter out light other than the infrared light signal, thereby reducing interference of other light on infrared imaging. The infrared core 34 and the display module 40 can be electrically connected via a flexible flat cable. The infrared image displayed on the display module 40 can be projected by the projection module 50 in the form of an optical signal and incident on the first image relay mirror 15a. The first image relay mirror 15a is then reflected to the rear end of the visible light path where the infrared image is located.

[0052] In other embodiments, as shown in FIG3 , the display module 40 is a transparent display screen 42 disposed in the visible light path of one of the left-eye imaging module 161 and the right-eye imaging module 162. The visible light signal is transmitted through the transparent display screen 42 and fused with the distance information and / or the infrared image displayed on the transparent display screen 42. The transparent display screen 42 may be a transparent OLED display screen through which the visible light signal is transmitted. The transparent display screen 42 is directly disposed in the visible light path corresponding to the left-eye imaging module 161 or the right-eye imaging module 162. The visible light signal forming the white light image is transmitted through the transparent display screen 42 and fused with the infrared image and / or distance information displayed on the transparent display screen 42. Among them, by setting the transparent display screen 42 in one of the visible light paths of the binocular white light component 10, the infrared image imaged by the infrared component 30 and the distance information obtained by the laser component 20 ranging can be directly fused with the white light image through the transparent display screen 42. The image fusion is completed directly in the visible light path, thereby eliminating the setting of the fusion light path and further simplifying the product structure.

[0053] Optionally, the transparent display screen 42 may include light-transmitting pixels, which are used to allow visible light signals passing through the transparent display screen 42 in the visible light path to pass through, forming a white light image on the imaging surface at the rear end of the visible light path. In this embodiment, the structure of the light-transmitting pixels of the transparent display screen 42 is not limited, and it is sufficient that the visible light signal can be transmitted. Optionally, the light-transmitting pixels may include a light-transmitting medium, and the light-transmitting medium does not affect the image displayed on the display screen. Preferably, the light-transmitting medium may be an optical medium material with high light transmittance, so that the light incident on the light-transmitting pixels can pass through efficiently. Optionally, the light-transmitting pixels of the transparent display screen 42 may also be light-transmitting holes, which allow image light incident on the light-transmitting pixels of the transparent display screen 42 to pass through. Further, the transparent display screen 42 may include display pixels, which are used to emit light, so that the transparent display screen 42 displays infrared images and / or distance information. In this embodiment, the structure of the display pixels of the transparent display screen 42 is not limited. In actual applications, it can be set according to imaging requirements. For example, the transparent display screen 42 can control the display pixels to emit light according to the infrared image electrical signal imaged by the infrared component 30, so that the transparent display screen 42 displays the infrared image. Optionally, the display pixels of the transparent display screen 42 may include three primary color pixels, so that the infrared image generated by the transparent display screen 42 contains colors and is more consistent with the natural form of the object. Optionally, the display pixels can be, but are not limited to, organic light emitting semiconductors (OLEDs) or light emitting diodes (LEDs). In an optional example, the transparent display screen 42 may include arranged pixel units, each pixel unit including a transparent pixel and a display pixel, the transparent pixel being used to transmit the visible light signal passing through the transparent display screen 42, and the display pixel being used to emit light, so that the transparent display screen 42 projects the infrared image formed by the infrared component 30. The transparent display screen 42 uses pixel units, each pixel unit includes a transparent pixel and a display pixel, which can achieve pixel-level fusion of the visible light signal that forms the white light image and the infrared image displayed through the transparent display screen 42, thereby improving the fusion effect of the two images, and improving the quality of the white light and infrared dual-light fusion image observed through the eyepiece 18, thereby improving the user experience.

[0054] Optionally, referring to Figures 2 and 4 , the laser emission module includes a laser emitter 21 (Laser Diode, LD) located on one side of the corresponding visible light path. A second image-relaying beam splitter 15b is located in the corresponding visible light path for receiving the pulsed laser light emitted by the laser emitter 21. The pulsed laser light emitted by the laser emitter 21 is incident on the second image-relaying beam splitter 15b, reflected by the second image-relaying beam splitter 15b, and then emitted along the corresponding visible light path toward the detection target in the opposite direction from where the visible light signal was incident. The laser signal reflected back from the detection target is received by the laser receiving module. The visible light signal within the target field of view, after incident, is emitted along the corresponding visible light path toward the second image-relaying beam splitter 15b, transmitted through the second image-relaying beam splitter 15b, and formed into a white light image at the rear end of the corresponding visible light path. In this way, the second image-relaying beam splitter 15b is disposed in the visible light path corresponding to the laser emitter 21. The second image-relaying beam splitter 15b reflects the laser signal incident on the laser emitter 21, located on one side of the visible light path, to a direction coaxial with the visible light path and then emits it in the opposite direction along the visible light path. This allows the laser emission optical path to share the visible light path of the binocular white light assembly 10, while retaining the independent imaging and laser ranging functions of the white light image and simplifying the product structure. In the embodiment shown in FIG2 , the first image-relaying beam splitter 15a and the second image-relaying beam splitter 15b are respectively disposed in the visible light paths of the left-eye imaging module 161 and the right-eye imaging module 162. The laser receiving objective lens 25 is disposed in front of the first image-relaying beam splitter 15a in the visible light path of the left-eye imaging module 161, and the laser emitter 21 is disposed on one side of the second image-relaying beam splitter 15b in the visible light path of the right-eye imaging module 162.

[0055] It should be noted that in the binocular white light assembly 10, the structures of the left-eye imaging module 161 and the right-eye imaging module 162 can be different. As shown in FIG3 , the difference between the left-eye imaging module 161 and the right-eye imaging module 162 is that only one of the left-eye imaging modules 161 and the right-eye imaging module 162 has a transparent display screen 42 in the visible light path, while the other does not. In an alternative embodiment, as shown in FIG3 , the transparent display screen 42 is provided in the visible light path where the laser receiving objective lens 25 is located, and is located behind the first image-relaying beam splitter 15a. In other embodiments, as shown in FIG2 , the structures of the left-eye imaging module 161 and the right-eye imaging module 162 may also be the same. For example, a first image relay beam splitter 15 a and a second image relay beam splitter 15 b are respectively provided in the visible light paths of the left-eye imaging module 161 and the right-eye imaging module 162. The display module 40 uses an OLED display screen provided on one side of the visible light path. The infrared image and / or distance information displayed in the display module 40 is then incident in the form of an optical signal along the fusion optical path to the image relay beam splitter in one of the visible light paths of the binocular white light assembly 10. After reflection by the image relay beam splitter, the infrared image and / or distance information are overlapped with the visible light path and fused with the white light image on the imaging surface at the rear end of the visible light path.

[0056] Optionally, the left-eye imaging module 161 and the right-eye imaging module 162 each include a white light entrance window located at the front end of the visible light path, a white light objective lens 13 located at the white light entrance window, and an eyepiece 18 located at the rear end of the visible light path. The laser emission module also includes a laser emission objective lens 22 located at the corresponding front end of the visible light path. The laser emission objective lens 22 and the laser receiving objective lens 25 are respectively coaxial with the corresponding white light objective lens 13. The laser receiving objective lens 25 is located at the white light entrance window at the front end of the left-eye imaging module 161. A first image-transmitting spectroscope 15a is provided in front of the eyepiece 18 in the visible light path of the left-eye imaging module 161. When the white light mode is turned on, the visible light signal within the target field of view is collected by the white light objective lens 13 at the white light entrance windows of the left-eye imaging module 161 and the right-eye imaging module 162, respectively, and emitted along the visible light path to the eyepiece 18 at the rear. When the laser ranging mode is turned on, the laser emitter 21 emits a pulsed laser, which is reflected by the second image-relaying spectroscope 15b of the right-eye imaging module 162 located in the emission direction of the pulsed laser and then emitted along the visible light path of the right-eye imaging module 162 in the opposite direction of the incident visible light to the laser emitting objective lens 22. The laser emitting objective lens 22 can collect the pulsed laser emitted along the visible light path after being reflected by the second image-relaying spectroscope 15b, so that the pulsed laser can be transmitted through the white light objective lens 13 at the front end of the right-eye imaging module 162 and then emitted toward the detection target in the target field of view (Figure 4); the laser signal reflected back by the detection target in the target field of view is collected by the laser receiving objective lens 25 at the white light entrance window of the left-eye imaging module 161 and emitted along the visible light path of the left-eye imaging module 161 to the first image-relaying spectroscope 15a in the left-eye imaging module 161. If the white light mode and the laser ranging mode are turned on at the same time, the optical paths in the above-mentioned white light mode and laser ranging mode are formed independently. After the white light objective lens of the left-eye imaging module 161 is incident, the incident visible light signal and laser signal are split by the first image-relaying spectroscope 15a, so that a preset proportion of the visible light signal is transmitted through and imaged at the rear end of the visible light path, and the laser signal is deviated from the visible light path after reflection, so as to be used to calculate the distance information of the detected target.

[0057] Optionally, the laser receiving module further includes a laser signal processing module located on a light-emitting side of the first image-relaying beam splitter 15a in the left-eye imaging module 161. The laser signal reflected from the detected target is received by the laser receiving objective lens 25, then transmitted along the visible light path of the laser receiving objective lens 25 toward the first image-relaying beam splitter 15a. After being split by the first image-relaying beam splitter 15a, the signal is transmitted to the laser signal processing module, which calculates the distance information of the detected target. The laser signal processing module is located in the direction in which the laser signal is emitted after being deflected by the first image-relaying beam splitter 15a. The laser signal processing module can be electrically connected to the display module 40 via a flexible flat cable, receiving the laser signal, calculating the distance information, and then transmitting it to the display module 40 for display.

[0058] The laser signal processing module includes a photodetector 24 provided on a light-emitting side of the first image-relaying spectroscope 15a in the left-eye imaging module 161 and a laser signal processor 23 electrically connected to the photodetector 24. The laser emitter 21 emits a pulsed laser toward the detection target. The laser signal reflected back by the detection target is collected by the laser receiving objective lens 25, emitted along the corresponding visible light path toward the first image-relaying spectroscope 15a, and reflected by the first image-relaying spectroscope 15a toward the photodetector 24. The photodetector 24 converts the laser signal reflected back by the detection target into an electrical signal and transmits it to the laser signal processor 23. The laser signal processor 23 calculates the distance information to the detection target. When the laser ranging mode is on, the laser signal processor 23 can send a control signal to the laser emitter 21 based on the user's operation of turning on the laser ranging function. The laser emitter 21 emits a pulsed laser, which is reflected by the second image-relaying beam splitter 15b in the right-eye image-relaying beam splitter 162 and emitted along the visible light path toward the detection target. The laser signal reflected back from the detection target is collected by the laser receiving objective lens 25 located at the white light entrance window of the left-eye imaging module 161, and emitted along the corresponding visible light path toward the first image-relaying beam splitter 15a. After being reflected by the first image-relaying beam splitter 15a in the left-eye imaging module 161, it deviates from the corresponding visible light path and is emitted toward the photodetector 24. The photodetector 24 converts the laser signal reflected back from the detection target into an electrical signal and transmits it to the laser signal processor 23. In the embodiment of the present application, by disposing the second image-relaying spectroscope 15b in the visible light path of the right-eye imaging module 162 and the beam-combining effect of the second image-relaying spectroscope 15b, a design is realized in which the laser emission optical path and the visible light optical path of the right-eye imaging module 162 are made to share the optical path; by disposing the first image-relaying spectroscope 15a in the visible light path of the left-eye imaging module 161 and the beam-splitting effect of the first image-relaying spectroscope 15a, a design is realized in which the laser reception optical path and the visible light optical path of the left-eye imaging module 161 are made to share the optical path; wherein, The second image-relay beam splitter 15 b is positioned in the direction of the pulsed laser light emitted by the laser emitter 21, and the photodetector 24 is positioned in the direction of the laser light signal emitted after reflection and separation by the first image-relay beam splitter 15 a. That is, the relative positions of the laser emitter 21 and the second image-relay beam splitter 15 b in the right-eye imaging module 162 are the same as the relative positions of the photodetector 24 and the first image-relay beam splitter 15 a in the left-eye imaging module 161. The laser emission optical path and the laser reception optical path are in opposite directions.

[0059] The multi-mode binocular handheld optical device further includes a main control board 60 connected to the infrared component 30, the laser component 20, and the display module 40, respectively. The main control board 60 receives the electrical signal converted from the infrared light signal sent by the infrared component 30 and / or the distance information sent by the laser component 20, and controls the display module 40 to display the corresponding infrared image and / or distance information. Optionally, the main control board 60 is provided with an image processing chip and a display interface, and the display module 40 is electrically connected to the display interface. The image processing chip is configured to process the infrared image according to a current image processing mode. The image processing chip may include a series of image processing algorithms, such as those for enhancing, scaling, and noise reduction of infrared images. Different image processing algorithms may correspond to different image processing modes. An image mode button for selecting an image processing mode may be provided on the housing of the multi-mode binocular handheld optical device. A user may select a desired infrared image processing mode by operating the image mode button. The main control board 60 can be connected to the display interface and the display module 40 via a flexible cable, so that the image processed by the image processing algorithm is converted into a clear infrared image and outputted for display on the display module 40. Optionally, the main control board 60 can be provided with a control circuit for controlling the operation of the laser assembly 20, which is used to detect the user's operation to enable the laser ranging function, receive a laser ranging request, and control the laser assembly 20 to emit pulsed laser to achieve ranging.

[0060] Among them, the laser signal processor 23 is electrically connected to the main control board 60, and the laser receiving objective lens 25 is arranged at the white light entrance window of the binocular white light component 10. The laser signal processor 23 is used to calculate the distance information between the detection target and the detection target based on the emission time of the pulsed laser emitted by the laser emitter 21, the reception time of the reflected laser signal received by the laser receiving objective lens 25, and the laser propagation speed. The main control board 60 sends the distance information to the display module 40 through the display interface, and controls the display module 40 to display the distance information. The photodetector 24 can be an APD (Avalanche Photo Diode). The laser receiving objective lens 25 is positioned at the position corresponding to the white light entrance window, achieving a common optical path design for the laser receiving optical path and the corresponding visible light optical path. The first image-relaying spectroscope 15a is then provided in the corresponding visible light optical path to achieve the separation of the visible light signal and the laser signal. The separated laser light is converged by the photodetector 24 located on one side of the first image-relaying spectroscope 15a. The echo signal output by the photodetector 24 is amplified and processed, and then transmitted to the laser signal processor 23, which calculates the distance information of the detected target. Optionally, the laser signal processor 23 includes a counter and a laser signal processing circuit. After the counter completes counting based on the echo signal output by the photodetector 24, it transmits the count information to the laser signal processing circuit, which then calculates the distance information. The distance information is then transmitted to the main control board 60, which controls the display module 40 to display the distance information. In an optional specific example, a laser button for controlling the laser emitter 21 to emit pulsed laser may be provided on the housing of the multi-mode binocular handheld optical device. The main control board 60 receives a distance request signal according to the user's operation of the laser button, and controls the laser component 20 to start the laser ranging function based on the distance request signal.

[0061] Optionally, referring to FIG5 , the first image-relay beam splitter 15a and the second image-relay beam splitter 15b have the same structure. Taking the first image-relay beam splitter 15a as an example, the first image-relay beam splitter 15a is composed of a Behan prism and a half pentaprism. The Behan prism includes an incident surface 151, a first edge reflection surface 154, an exit surface 152, a second edge reflection surface 157, and an intermediate reflection surface 153 disposed obliquely between the incident surface 151 and the exit surface 152. The incident surface 151 faces the incident direction of visible light, the exit surface 152 is parallel to the incident surface 151 and is located at the rear end of the visible light path, and the second edge reflection surface 157 is connected to the half pentaprism. The half pentaprism is disposed on the side of the Behan prism closest to the infrared component 30 and includes a light incident surface 155 facing the display module 40 and a light exit surface 156 facing the photodetector 24 in the laser component 20. In an optional specific example, the Behan prism includes a first prism and a second prism separated by an air gap, and the intermediate reflective surface 153 includes two surfaces separating the air gap. The incident surface 151, the first edge reflective surface 154, and one of the intermediate reflective surfaces 153 are surfaces of the first prism, and the exit surface 152, the second edge reflective surface 157, and the other intermediate reflective surface 153 are surfaces of the second prism. In this embodiment, the first image relay beam splitter 15a in the left-eye imaging module 161 and the second image relay beam splitter 15b in the right-eye imaging module 162 have the same structure. For the first image relay beam splitter 15a located in the visible light path where the laser receiving objective lens 25 is located, the light exit surface 156 of the first image relay beam splitter 15a directly faces the photodetector 24. For the second image relay beam splitter 15b located in the visible light path corresponding to the laser emitter 21, the light exit surface 156 of the second image relay beam splitter 15b directly faces the laser emitter 21. In the multi-mode binocular handheld optical device, the imaging optical paths of the white light component 10, the laser component 20 and the infrared component 30 can be relatively independent in different working modes. When multiple working modes are activated, the corresponding imaging optical paths are combined through the image transfer spectroscope to achieve the purpose of common optical path design and multi-mode fusion.

[0062] Optionally, the multi-mode binocular handheld optical device can define a left-eye white light channel 161 and a right-eye white light channel 162 of the binocular white light assembly 10 through the main lens barrel. The left-eye white light channel 161 and the right-eye white light channel 162 are parallel to each other and extend in the front-to-back direction of the multi-mode binocular handheld optical device. The two visible light paths of the binocular white light assembly 10 are respectively formed in the white light channels corresponding to the left and right eyes. The white light entrance window is located at the front end of the white light channel, and the image-transmitting spectroscope corresponding to the visible light path is located in the white light channel at a position relatively closer to the eyepiece 18. The transmitting and receiving optical paths of the laser signal are respectively integrated in front of the binocular white light channels of the binocular white light assembly 10. The laser receiving optical path is located in the white light channel and can completely overlap with the corresponding visible light path, or can partially overlap, realizing a common optical path design with the visible light path. By setting up an image-relay spectrometer in the white light channel, the white light mode and laser ranging mode can be enabled independently or simultaneously to meet the needs of different scenarios. Secondly, the laser receiving optical path and the visible light optical path adopt a common optical path design. While realizing the multi-mode of handheld optical devices, the structure is more compact, which can effectively reduce the overall volume and make the whole device small and easy to carry.

[0063] The multi-mode binocular handheld optical device can be configured with a main lens barrel and an infrared lens barrel integrally connected, with two white light entrance windows located side by side at the front end of the multi-mode binocular handheld optical device. The infrared light entrance window and the white light entrance window are located on the same vertical plane. The infrared channel 31, the left eye white light channel 161, and the right eye white light channel 162 are parallel to each other and extend in the front-to-back direction of the multi-mode binocular handheld optical device. The two white light objective lenses 13 are respectively located at the positions of the white light entrance windows, and the infrared objective lens group 33 is located at a position corresponding to the infrared light entrance windows, respectively used to focus more visible light and infrared light within the target field of view that is directed toward the white light entrance windows and the infrared light entrance windows. The left-eye white light channel 161 and the right-eye white light channel 162 are arranged in parallel and horizontally aligned with the left eye and the right eye of the person, respectively. The infrared channel 31 can be arranged above the left-eye white light channel 161 and the right-eye white light channel 162. The binocular white light assembly 10, the laser assembly 20 and the infrared assembly 30 are integrated into one body by connecting the main lens barrel and the infrared lens barrel. The internal spaces of the main lens barrel and the infrared lens barrel are connected, and the left-eye white light imaging optical path for the visible light of the left eye to pass through and form an image, the right-eye white light imaging optical path for the visible light of the right eye to pass through and form an image, the infrared imaging optical path for the infrared light to pass through and form an image, and the laser ranging optical path sharing the optical path with the visible light optical path of the left eye or the right eye are formed inside the multi-mode binocular handheld optical device.

[0064] Taking the laser receiving objective lens 25 positioned at the left eye's white light entrance window as an example, as shown in Figures 3 and 5 , the incident direction of visible light is the same as the incident direction of the laser signal reflected from the detected target. Visible light entering the left eye's white light channel 161 travels toward the incident surface 151 of the first image-relaying beam splitter 15a. After passing through the incident surface 151, it enters the Behan prism, transmits through the Behan prism, and exits the exit surface 152, forming a white light image at the end of the corresponding visible light path. In one specific example, visible light enters the Behan prism from the incident surface 151. A preset proportion of the visible light sequentially transmits through the intermediate reflective surface 153 and the exit surface 152, before exiting the exit surface 152 of the Behan prism to the end of the visible light path. The preset proportion can be set based on the brightness requirements of the white light image, for example, 60%.

[0065] The right eye white light imaging optical path of the binocular white light assembly 10 is the same as the left eye white light imaging optical path ( FIG. 2 ).

[0066] In the infrared imaging optical path, the infrared light signal incident on the infrared channel 31 is converted into an electrical signal by the infrared core 34 and transmitted to the display module 40. The display module 40 then displays the corresponding infrared image based on the electrical signal. Referring to Figure 6, if the multi-mode binocular handheld optical device employs an OLED display 41 positioned on the side of the visible light path where the laser receiving objective lens 25 is located, the infrared image displayed on the OLED display 41 is projected by the projection module 50. The infrared image, in the form of a light signal, is incident from the light entrance surface 155 of the half pentaprism to the light exit surface 156. This light exit surface 156 is then reflected toward the Bihan prism, where it enters the Bihan prism from its second edge reflection surface 157. After being reflected by the intermediate reflection surface 153 of the Bihan prism, it is emitted from the exit surface 152 toward the rear end of the visible light path. For ease of description, the section of the optical path where the infrared image of the display module 40 is projected toward the rear end of the visible light path, where the human eye observes it, via the projection module 50 and the first image-relaying beam splitter 15a, is referred to as the fusion optical path.

[0067] In the laser ranging optical path, the laser emitter 21 emits a pulsed laser, which is incident on the second image-relaying beam splitter 15b. After being reflected by the second image-relaying beam splitter 15b, the pulsed laser coincides with the visible light path in the right eye imaging optical path. The portion of the optical path where the pulsed laser is reflected by the second image-relaying beam splitter 15b and then emitted along the corresponding visible light path is called the laser emission optical path. After emitting a pulsed laser from the laser transmitter 21, the pulsed laser light is combined by the second image-relaying beam splitter 15b. After multiple reflections within the second image-relaying beam splitter 15b, it passes through the incident surface 151 and is emitted in the direction opposite to the visible light path, toward the detection target. In one alternative embodiment, the pulsed laser light sequentially passes through the light-exiting surface 156 and the second edge reflective surface 157 before entering the Bihan prism. Within the Bihan prism, it first passes through the intermediate reflective surface 153, then sequentially reflects from the incident surface 151, the first edge reflective surface 154, and the intermediate reflective surface 153, before exiting the incident surface 151 in the direction opposite to the visible light path. The laser receiving objective lens 25 collects the laser signal reflected from the detection target. The laser signal is incident on the incident surface 151 of the first image-relaying beam splitter 15a. This portion of the optical path is referred to as the laser receiving optical path, which overlaps with the visible light path in the left-eye imaging optical path. In the laser receiving optical path, the laser signal undergoes the splitting effect of the first image-relaying spectroscope 15a, and after multiple reflections within the Bihan prism, it is emitted to the second edge reflection surface 157 near the half pentaprism. It then passes through the half pentaprism and is emitted from the light-emitting surface 156 of the half pentaprism to the photodetector 24. In an optional specific example, after the laser signal enters the Bihan prism from the incident surface 151, it is sequentially reflected by the intermediate reflection surface 153, the first edge reflection surface 154, and the incident surface 151, and then emitted to the intermediate reflection surface 153. It then sequentially passes through the intermediate reflection surface 153, the second edge reflection surface 157, and the light-emitting surface 156, and is used to calculate distance information.

[0068] After the laser signal is converged and processed by the photodetector 24 and the laser signal processor 23, the calculated distance information is displayed on the display module 40. As shown in FIG6 , if the multi-mode binocular handheld optical device employs a design in which an OLED display screen 41 is positioned on the side of the visible light path where the laser receiving objective lens 25 resides, the distance information displayed on the OLED display screen 41 is projected by the projection module 50 as a light signal from the half-penta prism's light-incident surface 155 to the light-outcending surface 156. The light-outcending surface 156 then reflects toward the Bihan prism, where it enters the Bihan prism from its second edge reflection surface 157. After being reflected by the Bihan prism's intermediate reflection surface 153, the light-outcending surface 152 exits the visible light path, where this portion of the optical path overlaps with the infrared image fusion optical path. Thus, by designing the distance measurement optical path of the laser assembly 20 to partially overlap with the binocular white light assembly 10 and partially overlap with the infrared assembly 30, the overall compactness of the multi-mode binocular handheld optical device is greatly improved while achieving multi-mode operation.

[0069] In other optional embodiments, the multi-mode binocular handheld optical device adopts a structural design in which a transparent display screen 42 is set in the visible light path. In this way, when the visible light signal forming the white light image is transmitted through the transparent display screen 42, it is superimposed and fused with the infrared image and / or distance information displayed on the transparent display screen 42. Accordingly, in the infrared imaging optical path and the laser ranging optical path, the section of the fusion optical path formed by the OLED display screen 41, the projection module 50 and the first image relay spectrometer 15a can be omitted.

[0070] Optionally, a filter lens cover is provided on the outer side of the front end of the visible light path of the left-eye imaging module 161 and the right-eye imaging module 162. When the lens cover is placed over the white light channel, it is used to filter out visible light while allowing the laser signal to pass through. By providing the filter lens cover, when the lens cover is closed, visible light cannot enter the white light channel through the white light inlet window. In this way, the white light mode of the multi-mode binocular handheld optical device can be turned off by closing the lens cover. At this time, the user can still independently activate the laser ranging mode by operating the laser button, independently activate the infrared mode by operating the power button of the multi-mode binocular handheld optical device, or simultaneously activate the laser ranging function and the infrared ranging mode by operating the laser button and the power button, etc., to meet the needs of different application scenarios. When the user needs to activate the white light mode, they can simply open the lens cover.

[0071] The multi-mode binocular handheld optical device provided in the embodiments of the present application has at least the following features:

[0072] First, the binocular white light assembly 10, the infrared assembly 30, and the laser assembly 20 are integrated into one, forming a multi-mode binocular handheld optical device suitable for a variety of application scenarios. The laser emitting module and the laser receiving module are respectively arranged corresponding to the left-eye imaging module 161 and the right-eye imaging module 162, so that the original structural layout of the known binocular white light imaging assembly can be used to realize the design of the laser receiving optical path and the laser emitting optical path as a common optical path with two visible light optical paths. By setting an image-transmitting spectroscope in the visible light optical path, the visible light signal and the laser signal in the same optical path are split, thereby maintaining the relative independence of the laser ranging function and the visible light imaging function.

[0073] Second, the multi-mode binocular handheld optical device can support multiple working modes: white light mode, infrared mode, laser ranging mode, dual-light fusion mode, white light ranging mode, and dual-light fusion ranging mode. Users can select the current working mode of the multi-mode binocular handheld optical device according to actual application needs;

[0074] The multi-mode binocular handheld optical device can be a multi-spectral fusion binocular telescope. When the multi-spectral fusion binocular telescope is not turned on or not connected to the power supply, the laser component 20 and the infrared component 30 are not working, and the binocular white light component 10 can still work independently. The user can observe the target through the white light image from the eyepiece 18, and can downgrade to use the white light telescope to observe and search for targets during the day; at the same time, when used at night or in the jungle under insufficient light, the fusion mode can be turned on to highlight the target and enhance the search capability; it can also use only the infrared mode for observation and search at night to lock the target distance, that is, to realize a telescope that can be used for true all-weather observation and search.

[0075] Third, the front end of the white light channel of the binocular white light assembly 10 adopts a lens cover with a filter. When in infrared mode or infrared ranging mode, the lens cover can be closed. At this time, the ranging function of the laser assembly 20 can still be maintained. The laser ranging information and infrared image can be displayed on the display module 40, and the user can observe the infrared image or the infrared image with laser ranging information through the eyepiece 18.

[0076] Fourth, the image-transmitting beam splitter is composed of a Pechan prism and a half pentaprism. The image-transmitting beam splitter can realize light splitting and light combining. When visible light and laser share the white light channel, a preset proportion of visible light is allowed to pass through and form an image on the imaging surface, and the laser is allowed to pass through and then reflect to the detector on one side of the image-transmitting beam splitter for calculating distance information.

[0077] Fifth, the binocular white light component 10 can be used with fixed magnification, continuously variable magnification, or white light binoculars of different specifications that are compatible with fixed magnification and continuously variable magnification. By combining the laser component 20 and the infrared component 30 designed with a common optical path with white light binoculars of different specifications, precise target fusion can be achieved to enhance the target highlighting capability, thereby enhancing the search capability to meet the needs of different users.

[0078] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention 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 invention should be included in the scope of protection of the present invention. The scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A multi-mode binocular handheld optical device, characterized in that: It comprises a binocular white light component (10), a laser component (20), an infrared component (30) and a display module (40); The binocular white light assembly (10) comprises two monocular imaging modules (16) respectively arranged corresponding to the left eye and the right eye, and used for receiving visible light signals in the target field of view and then generating white light images at the rear ends of the corresponding visible light paths; The infrared component (30) is electrically connected to the display module (40) and is used for receiving infrared light signals within the target field of view, converting them into infrared image signals, and then sending them to the display module (40) to display the corresponding infrared image; The laser assembly (20) is electrically connected to the display module (40), and comprises a laser emitting module and a laser receiving module respectively arranged corresponding to the two monocular imaging modules (16), and respectively used for laser emitting and receiving, and the laser emitting optical path and the laser receiving optical path are respectively coaxial with the visible light optical path of the corresponding monocular imaging module (16); wherein the laser emitting module emits a pulsed laser to the detection target, and the laser signal reflected back by the detection target is received by the laser receiving module and used to calculate the distance information of the detection target, and the distance information is sent to the display module (40) for display; The distance information and / or the infrared image displayed in the display module (40) is ultimately transmitted to the rear end of the visible light path so as to be merged with the white light image.

2. The multi-mode binocular handheld optical device according to claim 1, characterized in that: The laser receiving module comprises a laser receiving objective lens (25) arranged at the front end of the corresponding visible light path, and a first image-transmitting spectroscope (15a) is also arranged in the corresponding visible light path, for separating the visible light signal from the laser signal received by the laser receiving objective lens (25); The visible light signal is transmitted through the first image-relay beam splitter (15a) to form a white light image at the rear end of the corresponding visible light path, and the laser signal received by the laser receiving objective lens (25) is reflected by the first image-relay beam splitter (15a) and deviates from the corresponding visible light path and is used to calculate distance information.

3. The multi-mode binocular handheld optical device according to claim 2, characterized in that: The display module (40) is located on a light incident side of the first image relay beam splitter (15a); the distance information and / or the infrared image displayed on the display module (40) is incident on the first image relay beam splitter (15a) in the form of a light signal, and is reflected by the first image relay beam splitter (15a) to the rear end of the visible light path to be merged with the white light image.

4. The multi-mode binocular handheld optical device according to claim 3, characterized in that: The multi-mode binocular handheld optical device further comprises a projection module (50) arranged between the first image relay beam splitter (15a) and the display module (40), wherein the projection module (50) is used to project the distance information and / or the infrared image displayed on the display module (40) onto the first image relay beam splitter (15a) in the form of a light signal, and the light is reflected by the first image relay beam splitter (15a) to the rear end of the visible light path.

5. The multi-mode binocular handheld optical device according to claim 1, characterized in that: The infrared component (30) comprises an infrared objective lens group (33) and an infrared core (34) arranged in sequence along an infrared light path, and the infrared core (34) is connected to the display module (40); the infrared objective lens group (33) is used to collect infrared light signals within the target field of view, and the infrared core (34) is used to convert the infrared light signals into electrical signals and send them to the display module (40) to display a corresponding infrared image.

6. The multi-mode binocular handheld optical device according to claim 1, characterized in that: The display module (40) is a transparent display screen (42) arranged in the visible light path of any monocular imaging module (16); The visible light signal is transmitted through the transparent display screen (42) and is merged with the distance information and / or the infrared image displayed on the transparent display screen (42).

7. The multi-mode binocular handheld optical device according to claim 1, characterized in that: The laser emission module comprises a laser emitter (21) arranged on one side corresponding to the visible light path, a second image-relay beam splitter (15b) located in the emission direction of the pulse laser emitted by the laser emitter (21) is arranged in the corresponding visible light path, the pulse laser emitted by the laser emitter (21) is incident on the second image-relay beam splitter (15b), and after being reflected by the second image-relay beam splitter (15b), it is emitted toward the detection target along the corresponding visible light path in the opposite direction to the incident direction of the visible light signal, and the laser signal reflected back by the detection target is received by the laser receiving module; The visible light signal in the target field of view is incident and then emitted toward the second image-relaying beam splitter (15b) along the corresponding visible light path, and after being transmitted through the second image-relaying beam splitter (15b), forms a white light image at the rear end corresponding to the visible light path.

8. The multi-mode binocular handheld optical device according to claim 2, characterized in that: The monocular imaging module (16) comprises a white light objective lens (13) located at the front end of the visible light path and an eyepiece (18) arranged at the rear end of the visible light path, and the laser emission module further comprises a laser emission objective lens (22) arranged at the corresponding front end of the visible light path, and the laser emission objective lens (22) and the laser receiving objective lens (25) are respectively coaxial with the corresponding white light objective lens (13).

9. The multi-mode binocular handheld optical device according to claim 2, characterized in that: The laser receiving module further comprises a photoelectric detector (24) disposed on a light-emitting side of the first image-relay beam splitter (15a) and a laser signal processor (23) electrically connected to the photoelectric detector (24); The laser signal reflected back by the detection target is collected by the laser receiving objective lens (25), emitted to the first image-relay beam splitter (15a) along the corresponding visible light path, and reflected to the photoelectric detector (24) by the first image-relay beam splitter (15a). The photoelectric detector (24) converts the laser signal reflected back by the detection target into an electrical signal and transmits it to the laser signal processor (23). The laser signal processor (23) calculates the distance information to the detection target.

10. The multi-mode binocular handheld optical device according to claim 2, characterized in that: The first image-relay beam splitter (15a) is composed of a Pechan prism and a half pentaprism; The Behan prism comprises an incident surface (151), a first edge reflection surface (154), an exit surface (152), a second edge reflection surface (157) which are arranged in sequence, and an intermediate reflection surface (153) which is located between the incident surface (151) and the exit surface (152) and is arranged obliquely; wherein the incident surface (151) faces the incident direction of the visible light, the exit surface (152) is parallel to the incident surface (151) and is located at the rear end corresponding to the visible light path, and the second edge reflection surface (157) is connected to the semi-pentaprism; The half pentaprism is arranged on a side of the Behan prism close to the infrared component (30). The semi-penta prism comprises a light incident surface (155) and a light emitting surface (156), wherein the light incident surface (155) faces the display module (40); The visible light signal is incident on the Behan prism from the incident surface (151), is transmitted through the Behan prism and is emitted from the emission surface (152), and forms a white light image at the rear end of the corresponding visible light path; the laser signal is incident on the Behan prism from the incident surface (151), is reflected multiple times by the intermediate reflection surface (153), the first edge reflection surface (154), and the incident surface (151), and is emitted from the light exit surface (156) of the semi-pentaprism, and is used to calculate distance information.

11. The multi-mode binocular handheld optical device according to claim 1, characterized in that: The multi-mode binocular handheld optical device further comprises a main control board (60) connected to the infrared component (30), the laser component (20) and the display module (40) respectively, wherein the main control board (60) receives an electrical signal corresponding to the infrared light signal sent by the infrared component (30) and / or the distance information sent by the laser component (20), and controls the display module (40) to display the corresponding infrared image and / or the distance information.

12. The multi-mode binocular handheld optical device according to claim 1, characterized in that: A filtering lens cover is provided on the outer side of the front end of the visible light path of each monocular imaging module (16), which is used to filter out the visible light signal and allow the laser signal to pass through.

13. The multi-mode binocular handheld optical device according to claim 1, characterized in that: The working mode of the multi-mode binocular handheld optical device includes one of the following: A white light mode in which only the binocular white light component (10) works to form a white light image, an infrared mode in which only the infrared component (30) works to form an infrared image, and both the white light mode and the infrared mode are turned on. The dual-light fusion mode, the white light ranging mode with both the white light mode and the laser ranging mode turned on, the infrared ranging mode with both the infrared mode and the laser ranging mode turned on, and the dual-light fusion ranging mode with both the white light mode, the infrared mode and the laser ranging mode turned on.

14. The multi-mode binocular handheld optical device according to any one of claims 1 to 13, characterized in that: The multi-mode binocular handheld optical device is a binocular handheld telescope.

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