A Porro laser rangefinder

Abstract

This invention belongs to the field of telescope design and relates to a Porro laser rangefinder telescope. Its left and right lens covers are respectively installed and connected to the left and right mirror bodies, which are connected by a central axis and can rotate around the central axis. A transparent display screen is located in the right mirror body, corresponding to the position of the eyepiece assembly mounted on that side. Each of the right and left mirror bodies contains a prism assembly and an optical axis adjustment component, which can adjust the optical axis of the prism assembly. The right lens cover houses a laser rangefinder module, a digital electronic compass, and a main control circuit board, while the left lens cover houses a battery assembly. After acquiring data, the laser rangefinder module and the digital electronic compass convert the light signals into electrical signals via the main control circuit board, ultimately imaging the data information onto the transparent display screen. This image is then magnified by the eyepiece assembly for human observation. This telescope provides stereoscopic observation and target recognition capabilities, accurately locates targets, and has the advantages of being lightweight and highly accurate.

Description

Technical Field

[0001] This utility model belongs to the field of telescope design, specifically relating to a Porro laser rangefinder telescope. Background Technology

[0002] In existing technologies, laser rangefinders are mostly monocular structures with relatively low magnification in their optical systems, short measurement distances, and limited functionality, resulting in a narrow range of applications. Existing Porro laser rangefinders often use OLED displays, have non-adjustable eye distances, rely heavily on image processing technology for object imaging, place high demands on the imaging detector, and suffer from poor battery life and high costs. Currently, laser rangefinders are transitioning from military to civilian applications to meet the needs of military observation, outdoor exploration, geological surveys, and other fields. This requires reducing costs while improving operability and observation comfort. Utility Model Content

[0003] To address the aforementioned technical problems in the existing technology, this utility model proposes a Porro laser ranging telescope, the specific technical solution of which is as follows:

[0004] A Porro laser rangefinder includes a telescope body assembly, an eyepiece group, and an objective lens group. The telescope body assembly includes a left telescope body, a right telescope body, a central axis, a left telescope cover, and a right telescope cover. The left and right telescope covers are respectively mounted and connected to the left and right telescope bodies, which are connected via the central axis and can rotate around it. The objective lens group is mounted on the left and right telescope covers, and the eyepiece group is mounted on the left and right telescope bodies. A transparent display screen is provided in the right telescope body, corresponding to the position of the eyepiece group mounted on that side. Each of the right and left telescope bodies contains a prism group and an optical axis adjustment assembly, which can adjust the optical axis of the prism group. The right telescope cover contains a laser rangefinder module, a digital electronic compass, and a main control circuit board. The left telescope cover contains a battery assembly, which powers the telescope. After the laser rangefinder module and the digital electronic compass acquire data, the main control circuit board converts the light signals into electrical signals, and finally images the data information onto the transparent display screen, which is then magnified by the eyepiece group for human observation.

[0005] Furthermore, the prism assembly includes a prism frame, and an upper prism and a lower prism disposed on the prism frame, with a spherical column provided on the prism frame.

[0006] Furthermore, both the right and left mirror bodies are provided with spherical concave holes corresponding to the spherical cylinders inside.

[0007] Furthermore, the optical axis adjustment assembly includes a compression spring, an adjusting screw, and a locking screw. The prism frame is initially fixed by the locking screw after being positioned by the corresponding spherical column and spherical concave hole. Then, the adjusting screw is turned in cooperation with the compression spring to finely adjust the angle of the prism frame.

[0008] Furthermore, the lug holes on the left and right sides of the mirror body are tapered, and the central axis can be loosely or loosely set in the lug holes by means of a set screw.

[0009] Furthermore, the prism group, eyepiece group, and objective lens group constitute a Porro telescope optical system.

[0010] Furthermore, the right mirror is also equipped with a button group connected to the main control circuit board, which includes buttons for ranging and angle measurement functions.

[0011] Furthermore, the mirror assembly is covered with a rubber protective skin.

[0012] Furthermore, the battery assembly includes a lithium battery, a battery casing, and a battery cover. The lithium battery is installed in the battery casing, and the battery casing is fixed inside the left mirror cover after being threadedly connected to the left mirror cover via the battery cover.

[0013] Furthermore, the eyepiece is equipped with an eye shield, and the laser lens of the laser ranging module is fitted with protective glass.

[0014] Compared with existing technologies, the significant advantages of this invention are as follows: The Porro laser rangefinder combines the advantages of the Porro telescope optical system and the laser rangefinder, and incorporates a transparent display screen, allowing data and images to be displayed simultaneously in the eyepiece, providing stereoscopic observation capabilities. The optical axis is adjusted externally using springs and screws, which is time-saving and labor-saving. It has the advantages of being lightweight, small in size, highly accurate, easy to operate, and highly adaptable to various environments. It can meet both military and civilian needs and is widely used in military observation, outdoor exploration, geological exploration, and other fields, providing a new approach to laser rangefinders. Attached Figure Description

[0015] Figure 1 and Figure 2 These are front and rear view external structural diagrams of a Porro laser ranging telescope according to this embodiment;

[0016] Figure 3 This is an optical schematic diagram of this embodiment;

[0017] Figure 4 This is a cross-sectional view of the Porro laser rangefinder telescope of this embodiment;

[0018] Figure 5a and 5b This is a structural diagram of the prism assembly in this embodiment;

[0019] Figure 6 This is a schematic diagram of the interior of the left and right mirror bodies in this embodiment;

[0020] Figure 7 This is a schematic diagram of the optical axis adjustment component in this embodiment;

[0021] Figure 8 This is a structural diagram showing the position of the central axis and the eye mask in this embodiment;

[0022] Figure 9 This is a structural diagram showing the left and right mirror bodies connected by a central axis in this embodiment;

[0023] Figure 10 This is a structural diagram of the component installation on the left mirror cover in this embodiment;

[0024] Figure 11 This is a structural diagram of the component installation on the right mirror cover in this embodiment;

[0025] In the diagram, 1-eyepiece group, 2-objective lens group, 3-battery assembly, 4-button group, 5-rubber protective cover, 6-transparent display screen, 7-laser rangefinder module, 8-digital electronic compass, 9-lithium battery, 10-protective glass, 11-prism group, 12-left lens body, 13-right lens body, 14-central axis, 15-eyecup, 16-left lens cover, 17-right lens cover, 18-set screw, 19-left objective lens, 20-battery sleeve, 21-battery cover, 22-right objective lens, 23-main control circuit board, 24-prism frame, 25-upper prism, 26-lower prism, 27-compression spring, 28-adjusting screw, 29-locking screw, 30-spherical column, 31-spherical concave hole. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] like Figure 1 and Figure 2 As shown in the figure, this invention discloses a Porro laser rangefinder telescope, including a body assembly, an eyepiece group 1, an objective lens group 2, a battery assembly 3, a button assembly 4, and a rubber protective cover 5. The metal parts, such as the body assembly, are mainly made of aluminum alloy to ensure necessary strength while reducing weight. The components are rigidly connected by screws and threads, and exposed connections are sealed with sealant. The rubber protective cover 5 encases the entire device. The overall structure is compact, stable, reliable, waterproof, and shockproof, maintaining stable operation even in complex environments. The button assembly 4 contains two buttons for distance and angle measurement functions, facilitating handheld use and wide applicability.

[0028] like Figure 3The diagram shows the optical principle of the telescope of this invention. The telescope also includes a transparent display screen 6, a laser ranging module 7, a digital electronic compass 8, an optical axis adjustment assembly, and a prism group 11. The eyepiece group 1, prism group 11, and objective lens group 2 form a Porro telescope optical system, integrating white light observation with data acquisition. Distant objects are imaged on the transparent display screen 6 through the objective lens group 2 and prism group 11, and then magnified by the eyepiece group 1 for human observation. The ranging and angle measurement functions are achieved by the laser ranging module 7 and the digital electronic compass 8, powered by a single CR123 lithium battery 9 in the battery assembly 3. After acquiring data, the laser ranging module 7 and the digital electronic compass 8 convert the light signals into electrical signals through the main control circuit board 23, ultimately image the data information on the transparent display screen 6, and then magnified by the eyepiece group 1 for human observation. The laser ranging module 7 has a protective glass 10, providing a wide ranging and angle measurement range with high accuracy.

[0029] like Figure 4 As shown, the lens assembly includes a left lens body 12, a right lens body 13, a central axis 14, a left lens cap 16, and a right lens cap 17. The left lens cap 16 and the right lens cap 17 are respectively installed on the left lens body 12 and the right lens body 13 with screws, and the connection is sealed with sealant. The left lens body 12 and the right lens body 13 are connected by the central axis 14, and the left and right lens bodies can rotate around the central axis 14 to realize the eye distance adjustment function.

[0030] like Figure 5a and 5b As shown, the prism assembly 11 includes a prism frame 24, and an upper prism 25 and a lower prism 26 disposed on the prism frame 24. A spherical column 30 is provided on the prism frame 24 for optical axis adjustment.

[0031] like Figure 6 As shown, the left and right mirror bodies (12, 13) are each provided with spherical concave holes 31 corresponding to the spherical column 30, which are used for the stable installation of the prism assembly 11 and the optical axis adjustment.

[0032] like Figure 7 As shown, the optical axis adjustment assembly includes a compression spring 27, an adjusting screw 28, and a locking screw 29. The prism assembly 11 is installed on the left and right mirror bodies (12, 13) respectively using the compression spring 27, adjusting screw 28, and locking screw 29. After initial installation, the optical axis is adjusted using an optical axis calibration instrument. First, the locking screw 29 is tightened, and then the adjusting screw 28 is fine-tuned using an Allen wrench. The compression spring 27 provides buffering and restoring force, aligning the left and right optical axes. To ensure ranging accuracy, the laser ranging module 7 is calibrated using an optical axis calibration instrument. Shims are added to the mounting location of the laser ranging module 7, and the emitting optical axis of the laser ranging module 7 is adjusted to coincide with the crosshairs of the transparent display screen 6. This invention allows for external optical axis adjustment using the compression spring 27 and two screws, reducing the number of disassembly and reassembly steps and improving calibration efficiency.

[0033] like Figure 8 As shown, the eyepiece assembly 1 is equipped with an eye shield 15, which provides eye protection. Figure 9 As shown, the central axis 14 and the left and right mirror body support holes are tapered. The friction between the central axis 14 and the left and right mirror bodies can be changed by adjusting the tension of the set screw 18 until the left and right mirror bodies rotate smoothly.

[0034] like Figure 10 and Figure 11 As shown, objective lens group 2 includes a left objective lens 19 and a right objective lens 22. The left objective lens 19 and the battery assembly 3 are respectively connected to the left lens cover 16 by threads. The battery assembly 3 mainly consists of a CR123 lithium battery 9, a battery sleeve 20 and a battery cover 21.

[0035] The laser ranging module 7 and the digital electronic compass 8 are mounted on the right mirror cover 17. Correspondingly, the right mirror cover 17 is also equipped with a main control circuit board 23. The laser ranging module 7 and the digital electronic compass 8 transmit the collected data to the transparent display screen 6 through the processing of the main control circuit board 23. After being magnified by the eyepiece group 1, the data is observed by the human eye.

[0036] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly. In this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal connection of two components or the interaction between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0037] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Although the implementation process of this utility model has been described in detail above, those skilled in the art can still modify the technical solutions described in the foregoing examples or make equivalent substitutions for some of the technical features. All modifications and equivalent substitutions made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A Porro laser rangefinder telescope, comprising a telescope body assembly, an eyepiece group (1), and an objective lens group (2), characterized in that, The lens assembly includes a left lens (12), a right lens (13), a central axis (14), a left lens cover (16), and a right lens cover (17). The left lens cover (16) and the right lens cover (17) are respectively installed and connected to the left lens (12) and the right lens (13). The left lens (12) and the right lens (13) are connected through the central axis (14) and can rotate around the central axis (14). The objective lens group (2) is installed on the left lens cover (16) and the right lens cover (17), and the eyepiece group (1) is installed on the left lens (12) and the right lens (13). A transparent display screen (6) is provided in the right mirror body (13), and the transparent display screen (6) corresponds to the position of the eyepiece group (1) installed on this side. A prism group (11) and an optical axis adjustment component are provided in the right mirror body (13) and the left mirror body (12), respectively. The optical axis of the prism group (11) can be adjusted by the optical axis adjustment component. The right mirror cover (17) is equipped with a laser ranging module (7), a digital electronic compass (8) and a main control circuit board (23), and the left mirror cover (16) is equipped with a battery assembly (3). The main control circuit board (23) receives the data collected by the laser ranging module (7) and the digital electronic compass (8) and images the data information on the transparent display screen (6).

2. The Poulk laser ranging telescope of claim 1 wherein, The prism assembly (11) includes a prism frame (24), and an upper prism (25) and a lower prism (26) disposed on the prism frame (24). A spherical column (30) is provided on the prism frame (24).

3. The Porro laser ranging telescope as described in claim 2, characterized in that, Both the right mirror body (13) and the left mirror body (12) are provided with spherical concave holes (31) corresponding to the spherical column (30).

4. The Porro laser rangefinder as described in claim 3, characterized in that, The optical axis adjustment assembly includes a compression spring (27), an adjustment screw (28), and a locking screw (29). The prism frame (24) is initially fixed by the locking screw (29) after the spherical column (30) and the spherical concave hole (31) are positioned accordingly. Then, the adjustment screw (28) is turned in conjunction with the compression spring (27) to finely adjust the angle of the prism frame (24).

5. The Porro laser rangefinder as described in claim 1, characterized in that, The lug holes on the left mirror body (12) and right mirror body (13) are tapered, and the central shaft (14) can be loosely or loosely set in the lug holes by means of a set screw (18).

6. The Porro laser ranging telescope as described in claim 1, characterized in that, The prism group (11), together with the eyepiece group (1) and the objective lens group (2), constitute the optical system of the Porro telescope.

7. The Porro laser rangefinder as described in claim 1, characterized in that, The right mirror body (13) is also provided with a button group (4) connected to the main control circuit board (23). The button group (4) includes buttons for distance measurement and angle measurement functions.

8. The Porro laser ranging telescope as described in claim 1, characterized in that, The mirror body assembly is wrapped with a rubber protective skin (5).

9. The Porro laser rangefinder as described in claim 1, characterized in that, The battery assembly (3) includes a lithium battery (9), a battery tube (20) and a battery cover (21). The lithium battery (9) is installed in the battery tube (20). The battery tube (20) is fixed inside the left mirror cover (16) after being threadedly connected to the left mirror cover (16) by the battery cover (21).

10. The Porro laser rangefinder as described in claim 1, characterized in that, The eyepiece assembly (1) is equipped with an eye shield (15), and the laser lens of the laser ranging module (7) is equipped with a protective glass (10).

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