Sighting telescope system with range finder function

Abstract

The invention discloses a sighting telescope system with a range finder function, which comprises a telescopic imaging mechanism, a sighting ranging module and a beam combiner group, and is characterized in that the telescopic imaging mechanism comprises an objective lens group, an eyepiece lens group and a relay lens group arranged between the objective lens group and the eyepiece lens group; the aiming distance measuring module comprises a display module used for generating an aiming aim point and a laser receiving and transmitting unit used for transmitting and receiving laser. And the reflecting surface of the beam combiner group is plated with an optical film layer which is transparent to the visible light wave band, reflects the laser wavelength of the laser transceiving unit and is used for combining the laser path of the laser transceiving unit with the visible light path of the telescopic imaging mechanism. Through the integrated coaxial and synchronous adjustment design, the problem of misalignment of aiming and distance measurement is fundamentally solved, the laser light path of the laser receiving and transmitting unit and the visible light path of the telescopic imaging mechanism are combined, high-precision'coaxial 'is achieved, and parallax between an aiming point and a distance measurement point is eliminated on the optical basis.

Description

Technical Field

[0001] The present application relates to the technical field of optical instruments, and in particular to a sighting system with a rangefinder function. Background Art

[0002] In the field of optical instruments, optical sights are a crucial tool, widely used in military, hunting, and other fields. Traditional optical sights only offer basic aiming capabilities. With the advancement of technology, integrating laser rangefinders into optical sights has become a new trend. This integration provides users with target distance information, greatly improving the convenience and accuracy of long-range aiming. This makes the role of sights even more prominent in practical applications, enabling users to more accurately complete aiming tasks, enhancing strike accuracy in military operations, and better grasping shooting timing in hunting activities.

[0003] To eliminate aiming parallax, various coaxial ranging solutions have been proposed in the prior art. A common approach involves placing a beam splitter, such as a beam splitter or dichroic mirror, in the sight's optical path, allowing the laser's transmission and reception paths to share the same objective lens as the human eye's observation path. Furthermore, zeroing (i.e., adjusting the aiming crosshairs to align with the impact point) is typically accomplished through two methods: physically moving the sight's internal reticle or using software algorithms to adjust the crosshairs' position on the electronic display. These methods address both aiming and ranging issues to a certain extent and are widely used in related fields.

[0004] However, these existing technologies have significant drawbacks. During zero calibration, whether physically moving the reticle or using software algorithms to shift the crosshair display position, the previously calibrated alignment between the laser optical axis and the aiming crosshair is disrupted. This forces users to perform complex secondary calibration of the laser rangefinder after adjusting the aiming point, or rely on potentially inaccurate software algorithms to compensate. This operation is not only cumbersome but also reduces the overall system reliability and responsiveness in combat environments. Summary of the Invention

[0005] In order to solve the technical problems in the prior art, the present application provides a sighting system with a rangefinder function.

[0006] The present application provides a sighting system with a rangefinder function that adopts the following technical solutions: A sight system with a rangefinder function, comprising: A telescopic imaging mechanism, comprising an objective lens group, an eyepiece lens group, and a rotating lens group disposed between the objective lens group and the eyepiece lens group; An aiming and ranging module is provided on the focal plane of the telescopic imaging mechanism, and includes a display module for generating an aiming crosshair and a laser transceiver unit for transmitting and receiving laser light; a beam combining lens assembly, whose reflective surface is arranged at a preset angle to the optical axis of the telescopic imaging mechanism, and the reflective surface is coated with an optical film layer that is transparent to the visible light band and reflects the laser wavelength of the laser transceiver unit, and is used to combine the laser optical path of the laser transceiver unit with the visible light optical path of the telescopic imaging mechanism; In which, the aiming and ranging module is configured as a rigid whole, and is translated and adjusted along at least two mutually orthogonal directions on the focal plane for calibrating the aiming center, so that during calibration, the translation movement of the aiming center is synchronized with the translation movement of the optical axis of the laser transceiver unit and has the same displacement, so as to ensure that the aiming center is always optically aligned with the optical axis of the laser transceiver unit.

[0007] In some embodiments, inside the aiming and ranging module, the optical axis of the laser transceiver unit is adjustable relative to the aiming center of the display module for initial calibration between the two, thereby constructing the display module and the laser transceiver unit into the rigid whole, and the initial calibration is achieved by moving the laser photoelectric converter or the spectrometer in at least two directions inside the laser transceiver unit.

[0008] In some embodiments, the laser transceiver unit has a laser emitter and a laser photoelectric converter. The laser transceiver unit also includes a spectrometer, which is used to separate the laser light path emitted by the laser emitter and the laser light path received by the laser photoelectric converter. The laser emitter emits pulsed infrared light with a wavelength of 700 nanometers to 1700 nanometers.

[0009] In some embodiments, the laser transceiver unit further includes a collimator, which is arranged in the optical path of the laser emitter and is used to collimate the emitted laser beam. The collimator can move forward and backward along the optical axis to adapt to the system size.

[0010] In some embodiments, the display module is a transparent LCD, OLED or LED display screen, and the display module is further configured to display the distance information and / or trajectory compensation information measured by the laser transceiver unit.

[0011] In some embodiments, along the propagation direction of the visible light path, the beam combining lens group is arranged after the objective lens group and before the image transfer lens group, and the display module is arranged between the beam combining lens group and the image transfer lens group, or between the beam combining lens group and the objective lens group.

[0012] In some embodiments, along the propagation direction of the visible light path, the beam combining lens assembly is disposed after the image relay lens assembly and before the eyepiece lens assembly.

[0013] In some embodiments, the beam combining mirror group includes a first beam combining mirror and a second beam combining mirror, the first beam combining mirror is arranged in the visible light path of the telescopic imaging mechanism, and its reflective surface is coated with the optical film layer; the second beam combining mirror is a reflective mirror, which is used to guide the laser light path of the laser transceiver unit to the reflective surface of the first beam combining mirror.

[0014] In some embodiments, the beam combining lens assembly is a single trapezoidal prism, the inclined surface of the trapezoidal prism serves as the reflecting surface and is coated with the optical film layer, and the laser light path of the laser transceiver unit is incident from the bottom surface of the trapezoidal prism.

[0015] In some embodiments, the image relay lens group and the beam combiner lens group are integrally constructed into a single combined prism module, which has multiple reflective surfaces for correcting image direction and an inner surface that serves as the reflective surface and is coated with the optical film layer.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. The integrated coaxial and synchronous adjustment design fundamentally solves the problem of misalignment in aiming and ranging. First, the telescopic imaging mechanism provides a basic, clear, upright long-range image, while the aiming and ranging module is positioned as an integrated unit on its focal plane, ensuring that the user can clearly see both the target and the aiming reticule. Second, the beam combiner, through its optical coating that clearly transmits and reflects specific wavelengths, cleverly combines the laser optical path of the laser transceiver unit with the visible light path of the telescopic imaging mechanism, achieving high-precision "coaxiality" and optically eliminating parallax between the aiming point and the ranging point. Furthermore, the aiming and ranging module is constructed as a "rigid entity" and can be adjusted for overall translation on the focal plane. This ensures that when the user performs zero calibration, the movement of the aiming reticule and the movement of the laser optical axis are completely synchronized and equal, thus ensuring that the aiming reticule is always optically aligned with the optical axis of the laser transceiver unit. This solves the core problem of "misalignment caused by adjusting the reticule" in the prior art and achieves the technical effect of "one-time zeroing, permanent alignment". 2. The "double-level adjustment" mechanism and purely mechanical synchronous movement structure adopted by this invention provide higher stability and reliability than solutions that rely on software algorithms for compensation. Because the aiming point and the ranging point always precisely coincide, measurement accuracy is also guaranteed at all distances and adjustment positions. 3. In terms of optical layout, the beam combiner can be placed before or after the image-reversing lens group. Specifically, the beam combiner can take various forms, including a combined lens, a single trapezoidal prism, or a combined prism module integrated with the image-reversing lens group. This design flexibility demonstrates the strong adaptability and industrial applicability of this invention, allowing optimization based on cost, size, and performance requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the system structure of Example 1 of the present invention; Figure 2 This is a schematic diagram of the system structure of Example 2 of the present invention; Figure 3 This is a schematic diagram of the system structure of Example 3 of the present invention; Figure 4 This is a schematic diagram of the system structure of Example 4 of the present invention; Figure 5 This is a schematic diagram of the system structure of Example 5 of the present invention; Figure 6 This is a schematic diagram of the system structure of Example 6 of the present invention; Figure 7 A schematic diagram of a display interface generated by the display module of the present invention.

[0018] Explanation of the accompanying reference numerals: 1. Telescopic imaging mechanism; 11. Objective lens group; 12. Image-transmitting lens group; 13. Eyepiece lens group; 2. Aiming and ranging module; 21. Display module; 22. Laser transceiver unit; 221. Laser emitter; 222. Laser photoelectric converter; 223. Beam splitter; 224. Collimator; 3. Beam combining lens group; 31. First beam combining lens; 32. Second beam combining lens. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of the present invention, but are not limited thereto. Those skilled in the art can fully combine the embodiments of the present invention, and other embodiments obtained without creative work are also within the scope of protection of the present invention.

[0020] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings.

[0021] An embodiment of the present invention provides a sighting system with a rangefinder function, the core of which lies in an aiming and ranging module 2 that is adjusted as a rigid whole, around which an efficient telescopic imaging mechanism 1 and a beam combining lens group 3 are constructed.

[0022] Reference Figure 1-Figure 7The system includes a telescopic imaging mechanism 1 arranged along the main optical path. The telescopic imaging mechanism 1 is composed of an objective lens group 11, a rotating lens group 12, and an eyepiece lens group 13. Its function is to form a clear, upright image for human observation. More specifically: Objective lens assembly 11: The "eyes" of the telescopic imaging mechanism 1. It can be a combination of convex lenses, typically made of high-quality optical glass. Through precise optical design and assembly, it ensures that light from distant targets can be collected and converged to form a clear, but inverted, real image.

[0023] Image-transmitting lens assembly 12: Its core function is to transform the inverted real image formed by objective lens assembly 11 into an upright image, conforming to the human eye's observation habits. Image-transmitting lens assembly 12 can be implemented using a combination of reflectors (e.g., two mutually perpendicular reflectors) or a more compact prism assembly (e.g., a Porro prism or roof prism).

[0024] Eyepiece assembly 13: This acts like a precision magnifying glass, further magnifying the erected image formed by the image-reversing lens assembly 12 for observation. It typically also consists of multiple lenses, such as a combination of concave and convex lenses, to effectively correct aberrations and chromatic aberrations, providing the user with a wide, clear, and comfortable field of view.

[0025] These three components work together to complete the function of telescopic imaging, allowing the human eye to clearly observe distant targets.

[0026] Reference Figure 1 The aiming and ranging module 2, a key component of the system, is precisely set on the focal plane of the telescopic imaging mechanism 1. The module integrates a display module 21 and a laser transceiver unit 22 in structure.

[0027] The display module 21 is responsible for generating a crosshair for the user to aim at. In a preferred embodiment, the module can be a transparent LCD, OLED or LED display screen, and can further display the distance information and trajectory compensation data measured by the laser transceiver unit 22, providing the user with integrated information support. Taking the LCD display screen as an example, it has the characteristics of being light and thin, and low in power consumption, and is internally composed of a liquid crystal layer, a polarizer, a backlight source, etc. By controlling the arrangement of liquid crystal molecules, different images are displayed to generate an aiming crosshair. Of course, an OLED display screen can also be used, which has the advantages of self-luminescence and high contrast, and can display the aiming crosshair more clearly.

[0028] The laser transceiver unit 22 includes a laser emitter 221 and a laser photoelectric converter 222. The laser emitter 221 preferably emits pulsed infrared light with a wavelength of 700 nanometers to 1700 nanometers. The laser emitter 221 generally consists of a laser diode, a driver circuit, etc. The driver circuit provides the laser diode with an appropriate current, causing it to emit laser light of a specific wavelength. The laser photoelectric converter 222 is used to receive the reflected laser light and convert it into an electrical signal for subsequent processing. The laser photoelectric converter 222 can use devices such as photodiodes, which have the characteristics of fast response speed and high sensitivity. In addition, the laser transceiver unit 22 also includes a spectroscope 223, which is used to separate the laser light path emitted by the laser emitter 221 from the laser light path received by the laser photoelectric converter 222. The spectroscope 223 is usually made of optical glass with a special film layer on the surface. It can reflect and transmit the laser light according to the wavelength and incident angle of the light, thereby achieving the separation of the transmitting and receiving light paths.

[0029] Preferably, to optimize the quality of the laser beam, the laser transceiver unit 22 also includes a collimator 224, which is disposed in the optical path of the laser emitter 221 and is used to collimate the emitted laser beam. The collimator 224 can be a combination of convex or concave lenses. By adjusting the focal length and position of the lens, the emitted laser beam is made more parallel, thereby improving the directionality of the laser. Furthermore, the collimator 224 can be moved back and forth along the optical axis to adapt to the system size. During the production and assembly process, the position of the collimator 224 can be adjusted according to actual needs to optimize the overall layout of the system.

[0030] The display module 21 and the laser transceiver unit 22 are combined to form a rigid whole. Within the module, the optical axis of the laser transceiver unit 22 is adjustable relative to the center of the display module 21. During production, the position of the laser transceiver unit 22 can be fine-tuned using internal fine-tuning mechanisms, such as precision screw adjustments, to perfectly align the laser optical axis with the center of the sight, thereby forming the two into an internally aligned "rigid whole." During user use, this calibrated "rigid whole" module can be adjusted for overall translation within the focal plane of the scope to achieve zeroing.

[0031] Specifically, the reflective surface of the beam combiner 3 is set at a preset angle to the optical axis of the telescopic imaging mechanism 1 and is coated with an optical film that is transparent to visible light and reflective to specific laser wavelengths. The optical film of the beam combiner 3 is applied to the reflective surface using a special coating process, which selectively reflects and transmits light of different wavelengths. For visible light, the film has high transmittance, allowing it to pass smoothly through the beam combiner 3. For lasers of specific wavelengths, the film has high reflectivity, reflecting the laser light into the desired optical path, thereby merging the laser light path with the visible light path. In a preferred embodiment, the reflective surface is set at a 45-degree angle to the main optical path.

[0032] The core principle of this invention lies in its unique two-layer regulation mechanism: Internal initial calibration: Within the aiming and ranging module 2, the optical axis of the laser transceiver unit 22 is adjustable relative to the center of the display module 21. This is a step performed during the production assembly phase. Through internal fine-tuning mechanisms, the laser optical axis and the center of the center are precisely aligned, thus "locking" the two into an internally aligned, truly "rigid entity." In a specific implementation, this adjustment can be accomplished by moving the laser photoelectric converter 222 or the beam splitter 223 in at least two orthogonal directions within the laser transceiver unit 22.

[0033] External Zero Calibration: By turning the scope's external adjustment knobs, the user can move this "rigid monolith" module vertically, horizontally, and vertically in the focal plane. Because the laser unit and display unit move synchronously and in unison, the laser rangefinder remains precisely aligned with the user's aiming point, regardless of the user's adjustment.

[0034] The components in the telescopic imaging mechanism 1 of the present invention may have different optical layouts to meet different design requirements.

[0035] Example 1: Post-positioned beam combiner Reference Figure 1 The optical path layout of this embodiment is as follows: along the direction of visible light propagation, light sequentially passes through the objective lens assembly 11, the image relay assembly 12, and then reaches the beam combiner assembly 3. This is a basic and efficient layout of the present invention. In this layout, the display module 21 is located between the beam combiner assembly 3 and the eyepiece assembly 13, and the erected image formed by the display module 21 and the image relay assembly 12 is located on the focal plane of the eyepiece 13.

[0036] Example 2: Pre-positioned beam combiner Reference Figure 2 and Figure 3The optical path layout of this embodiment is as follows: along the propagation direction of visible light, the light passes through the objective lens group 11 in sequence, first reaches the beam combining lens group 3, and then enters the image transfer lens group 12. Under this layout, the display module 21 can be flexibly set at two different focal plane positions: one is between the beam combining lens group 3 and the image transfer lens group 12 ( Figure 3 ), and the second is between the beam combining lens group 3 and the objective lens group 11 ( Figure 2 ).

[0037] The beam combining lens assembly 3 itself may also have a variety of specific structures, which can be used in combination with any of the above-mentioned optical layout solutions.

[0038] Example 3: Combined beam combiner Reference Figure 4 The beam combiner assembly 3 can be composed of two independent components, including a first beam combiner 31 and a second beam combiner 32. The first beam combiner 31 is disposed in the visible light path of the telescopic imaging mechanism 1, and its reflective surface S1 is coated with the optical film layer. The second beam combiner 32 is a reflector, and its reflective surface S2 is coated with a total reflection film. It is used to guide the laser light path of the laser transceiver unit 22 to the reflective surface S1 of the first beam combiner 31. This solution is flexible in design and easy to manufacture.

[0039] Example 4: Trapezoidal Prism Solution Reference Figure 5 The beam combining lens group 3 is a single trapezoidal prism, the inclined surface S1 of the trapezoidal prism serves as the reflecting surface and is coated with the optical film layer, and the laser light path of the laser transceiver unit 22 is incident from the bottom surface S2 of the trapezoidal prism.

[0040] Example 5: Integrated prism module solution Reference Figure 6 To achieve ultimate compactness, the functions of the image-transmitting lens group 12 and the beam-combining lens group 3 can be integrated into a single combined prism module. The combined prism module internally has multiple reflective surfaces for image direction correction, as well as an inner surface serving as the reflective surface S1 and coated with the optical film.

[0041] Example 6: Zoom system application solution The present invention is not only applicable to fixed-magnification sighting systems, but can also be efficiently applied to more complex variable-magnification telescope systems. A variable-magnification telescope system, in addition to the objective lens assembly 11, the image-transmitting lens assembly 12, and the eyepiece assembly 13, also includes a key variable-magnification group. Axial movement of this group (typically a lens assembly) within the optical path can change the magnification of the entire system.

[0042] In such a system, in order to ensure that the laser ranging function is not affected during the process of adjusting the magnification (i.e., "zooming"), the present invention provides an optimized layout solution: the aiming and ranging module 2 is arranged after the objective lens group 11 and before the zoom group.

[0043] The technical effect is that the light entering the aiming and ranging module 2 comes from the objective lens assembly 11 and has not yet been affected by the magnification changes of the zoom assembly. In this way, no matter how the user adjusts the zoom knob to change the magnification of the field of view, the laser ranging optical path remains stable, thus ensuring the accuracy and consistency of the distance measurement.

[0044] The working process of the system of the present invention is as follows: Aiming process: The user observes through the eyepiece lens group 13, and the visible light from the target passes through the objective lens group 11, the image transfer lens group 12 and the beam combining lens group 3, and is clearly imaged in the user's eyes together with the crosshairs generated by the display module 21.

[0045] Distance measurement process: When the user triggers the distance measurement function, the laser emitter 221 of the laser transceiver unit 22 emits a laser pulse. After being reflected by the beam combiner 3, the pulse is emitted along a path completely coaxial with the crosshairs toward the target. After being reflected by the target, the light pulse returns along the original path and is reflected again by the beam combiner 3 back to the laser photoelectric converter 222. The system calculates the flight time of the light pulse to determine the precise distance.

[0046] Information display: The measured distance data and possible trajectory compensation solution data are displayed in real time on the display module 21 for the user's reference (such as Figure 7 ).

[0047] Zero Calibration: When calibration is required, the user rotates the external adjustment knob, causing the entire aiming and ranging module 2 to translate horizontally on the focal plane, aligning the crosshairs with the actual impact point. During this process, since the laser optical axis and the crosshairs move synchronously, the ranging point also moves accordingly, always aligning with the aiming point, without the need for any additional calibration.

[0048] The technical effects of the technical solution provided by this application include: (1) The problem of misalignment in aiming and ranging is fundamentally solved through the integrated coaxial and synchronous adjustment design. First, the telescopic imaging mechanism 1 provides a basic, clear and upright long-range image, and the aiming and ranging module 2 is set on its focal plane as an integrated unit, which ensures that the user can see the target and the aiming center at the same time. Secondly, the beam combining lens group 3 cleverly combines the laser light path of the laser transceiver unit 22 with the visible light path of the telescopic imaging mechanism 1 through its optical film layer that is "clearly transparent and reflective" for specific wavelengths, achieving high-precision "synchronous" aiming and ranging. axis", eliminating the parallax between the aiming point and the ranging point on an optical basis; and the present invention constructs the aiming and ranging module 2 into a "rigid whole" and enables it to be translated and adjusted as a whole on the focal plane, ensuring that when the user performs zero calibration, the movement of the aiming center and the movement of the laser optical axis are completely synchronized and equal, thereby ensuring that the aiming center is always optically aligned with the optical axis of the laser transceiver unit 22, solving the core pain point of "adjusting the center leads to misalignment" in the prior art, and achieving the technical effect of "one-time zeroing, permanent alignment"; (2) The "double-layer adjustment" mechanism and purely mechanical synchronous movement structure adopted by the present invention have higher stability and reliability than solutions that rely on software algorithms for compensation. Since the aiming point and the ranging point always coincide precisely, the measurement accuracy is also guaranteed at all distances and adjustment positions; (3) In terms of optical layout, the beam combiner 3 can be arranged before or after the image-reversing lens group 12. In terms of specific structure, the beam combiner 3 can be in various forms, such as a combined type, a single trapezoidal prism, or a combined prism module integrated with the image-reversing lens group 12. This design flexibility demonstrates that the present invention has strong adaptability and industrial application value, and can be optimized according to cost, size, and performance requirements. (4) The present invention also proposes an optimized layout in a zoom telescope system. By placing the aiming and ranging module 2 before the zoom group, it ensures that the stability and accuracy of the ranging function are not affected when the magnification is adjusted, which greatly expands the application scope and practical value of the present invention.

[0049] The specific implementation methods of the present application described above do not constitute a limitation on the scope of protection of the present application. Any other corresponding changes and modifications made based on the technical concept of the present application should be included in the scope of protection of the present application.

Claims

1. A sighting system with rangefinder function, characterized in that: include: A telescopic imaging mechanism (1), comprising an objective lens group (11), an eyepiece lens group (13), and a rotating lens group (12) arranged between the objective lens group (11) and the eyepiece lens group (13); An aiming and ranging module (2) is arranged on the focal plane of the telescopic imaging mechanism (1), and the aiming and ranging module (2) includes a display module (21) for generating an aiming center, and a laser transceiver unit (22) for emitting and receiving laser light; a beam combining lens assembly (3), a reflective surface of which is arranged at a preset angle to the optical axis of the telescopic imaging mechanism (1), the reflective surface being coated with an optical film layer, the film layer being transparent to the visible light band and reflecting the laser wavelength of the laser transceiver unit (22), and being used to combine the laser light path of the laser transceiver unit (22) with the visible light path of the telescopic imaging mechanism (1); The aiming and ranging module (2) is configured as a rigid whole and is adjusted to perform translation along at least two mutually orthogonal directions on the focal plane for calibrating the aiming center, so that when calibrating, the translation movement of the aiming center is synchronized with the translation movement of the optical axis of the laser transceiver unit (22) and has the same displacement, so as to ensure that the aiming center is always optically aligned with the optical axis of the laser transceiver unit (22).

2. The sighting system with rangefinder function according to claim 1, characterized in that: Inside the aiming and ranging module (2), the optical axis of the laser transceiver unit (22) is adjustable relative to the aiming collimator of the display module (21) for performing initial calibration between the two, thereby configuring the display module (21) and the laser transceiver unit (22) into the rigid whole. The initial calibration is achieved by moving the laser photoelectric converter (222) or the beam splitter (223) in at least two directions inside the laser transceiver unit (22).

3. The sighting system with rangefinder function according to claim 1, characterized in that: The laser transceiver unit (22) comprises a laser emitter (221) and a laser photoelectric converter (222). The laser transceiver unit (22) further comprises a spectroscope (223). The spectroscope (223) is used to separate the laser light path emitted by the laser emitter (221) from the laser light path received by the laser photoelectric converter (222). The laser emitter (221) emits pulsed infrared light with a wavelength of 700 nanometers to 1700 nanometers.

4. The sighting system with rangefinder function according to claim 1, characterized in that: The laser transceiver unit (22) further includes a collimator (224), which is arranged on the optical path of the laser emitter (221) and is used to collimate the emitted laser beam. The collimator (224) can move forward and backward along the optical axis to adapt to the system size.

5. The sighting system with rangefinder function according to claim 1, characterized in that: The display module (21) is a transparent LCD, OLED or LED display screen, and the display module (21) is also configured to display distance information and / or trajectory compensation information measured by the laser transceiver unit (22).

6. The sighting system with rangefinder function according to claim 1, characterized in that: Along the propagation direction of the visible light path, the beam combining lens group (3) is arranged behind the objective lens group (11) and before the image transfer lens group (12), and the display module (21) is arranged between the beam combining lens group (3) and the image transfer lens group (12), or between the beam combining lens group (3) and the objective lens group (11).

7. The sighting system with rangefinder function according to claim 1, characterized in that: Along the propagation direction of the visible light path, the beam combining lens group (3) is arranged behind the image relay lens group (12) and before the eyepiece lens group (13).

8. The sighting system with rangefinder function according to claim 1, characterized in that: The beam combining mirror group (3) comprises a first beam combining mirror (31) and a second beam combining mirror (32); the first beam combining mirror (31) is arranged in the visible light path of the telescopic imaging mechanism (1), and its reflective surface is coated with the optical film layer; the second beam combining mirror (32) is a reflective mirror, which is used to guide the laser light path of the laser transceiver unit (22) to the reflective surface of the first beam combining mirror (31).

9. The sighting system with rangefinder function according to claim 1, characterized in that: The beam combining lens group (3) is a single trapezoidal prism, the inclined surface of the trapezoidal prism serves as the reflecting surface and is coated with the optical film layer, and the laser light path of the laser transceiver unit (22) is incident from the bottom surface of the trapezoidal prism.

10. The sighting system with rangefinder function according to claim 1, characterized in that: The image-transmitting lens group (12) and the beam-combining lens group (3) are integrally constructed into a single combined prism module, which internally comprises a plurality of reflecting surfaces for correcting image directions, and an inner surface serving as the reflecting surface and coated with the optical film layer.

Images