A low-light-level night vision device

Abstract

The utility model discloses a kind of low-light night vision devices, including shell, indicating lamp and be set on the eyepiece of shell;The shell is provided with clamping groove, the clamping groove is fixedly connected with the clamping seat on it, and the indicating lamp is inserted in the clamping seat;The end of the clamping seat embedding clamping groove is provided with through-hole, and the optical fiber receiving indicating lamp light source is inserted in the through-hole, and the end of the optical fiber extends to the inner cavity of shell and approaches the light inlet end of eyepiece;The shell is provided with the passageway for optical fiber to pass through.The utility model has the advantages that the space requirement to equipment internal layout is significantly reduced, so that it is suitable for various compact structure monocular or binocular night vision device.

Description

Technical Field

[0001] This utility model relates to the field of low-light image intensifier technology, and in particular to a low-light night vision device. Background Technology

[0002] In existing technologies, commercially available monocular or binocular low-light night vision devices typically employ a light-emitting diode (LED) indicator (such as red, yellow, green, etc.) placed between the eyepiece and the image intensifier, along with a light guide sheet. The flashing of the LED indicates to the user whether the device is low on battery, auxiliary lighting is on, or other operational status information. However, this technical solution requires sufficient physical space between the eyepiece and the image intensifier to accommodate the LED light source and its associated light guide structure, which places high demands on the internal layout of the product. For some compact night vision products that prioritize miniaturization, lightweight design, or high integration—such as binocular devices—this approach is particularly challenging. In monocular structures, the limited gap between the eyepiece and its front optical elements, or the extremely narrow assembly space between the eyepiece and the image intensifier in monocular monocular structures, often makes it impossible to effectively arrange the aforementioned LED and light guide components. This results in users being unable to simultaneously obtain crucial status indication information when observing through the eyepiece, affecting user experience and operational safety. Therefore, there is an urgent need to propose a novel low-light night vision device structural design that can overcome internal space limitations without relying on traditional LED and light guide layouts, enabling users to directly observe clear and reliable status indication information through the eyepiece, thereby improving the product's functionality, human-computer interaction, and applicability. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a low-light night vision device.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0005] A low-light night vision device includes a housing, an indicator light, and an eyepiece disposed on the housing; the housing has a slot, a mounting bracket is fixedly connected to the slot, and the indicator light is inserted into the mounting bracket; one end of the mounting bracket that is embedded in the slot has a through hole, and an optical fiber for receiving the light source of the indicator light is inserted into the through hole, the end of the optical fiber extending into the inner cavity of the housing and close to the light-inlet end of the eyepiece; the housing has a channel for the optical fiber to pass through.

[0006] As a further improvement of the present invention, the snap-fit ​​seat includes a seat body with a mounting groove and a connecting part located at the bottom end of the seat body; the through hole is provided on the connecting seat and communicates with the mounting groove; the indicator light is inserted into the mounting groove; the shape of the snap-fit ​​groove is adapted to the shape of the seat body and the connecting part.

[0007] As a further improvement of this utility model, the slot is positioned close to the eyepiece.

[0008] As a further improvement of this utility model, the eyepiece is a monocular or a binocular.

[0009] As a further improvement of this utility model, the length of the end of the optical fiber extending into the inner cavity of the outer shell is 5mm.

[0010] The above technical solution has the following advantages:

[0011] This invention guides the light signal emitted by an indicator light to the edge or a specific area of ​​the eyepiece's field of view via a thin-diameter flexible optical fiber, thus achieving a clearly visible status indication without occupying the core space of the original optical channel. This solution fully utilizes the small size, flexibility, and low transmission loss of optical fibers, significantly reducing the space requirements for the internal layout of the device, making it suitable for various compact monocular or binocular night vision devices. Furthermore, the position of the fiber optic outlet around the eyepiece can be flexibly adjusted according to ergonomic needs, satisfying different users' visual preferences for the indicated direction. Therefore, this invention effectively overcomes the spatial limitations of traditional LED + light guide sheet solutions, providing a lightweight, highly adaptable, and easily integrated new method for status indication in low-light night vision devices. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of one embodiment of the present invention, in which some section lines are omitted;

[0013] Figure 2 for Figure 1 An enlarged view of part A in the image;

[0014] Figure 3 This is a magnified cross-sectional view of the assembled indicator lights, connectors, and optical fibers.

[0015] Figure 4 This is a cross-sectional view of another embodiment of the present invention, in which some structures and some section lines are omitted;

[0016] Figure 5 for Figure 4 An enlarged view of part B in the diagram;

[0017] In the picture:

[0018] 1-Housing, 2-Indicator light, 3-Eyepiece, 4-Card socket, 5-Fiber optic cable;

[0019] 41-Mounting slot, 42-Base, 43-Connecting part. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] Example 1

[0022] As attached Figure 1-3 As shown, a low-light night vision device includes a housing 1, an indicator light 2, and an eyepiece 3 disposed on the housing 1; this embodiment is a monocular low-light night vision device; the housing 1 is provided with a slot, and a mounting base 4 is fixedly connected to the slot, and the indicator light 2 is inserted into the mounting base 4; one end of the mounting base 4 that is embedded in the slot is provided with a through hole, and an optical fiber 5 for receiving the light source of the indicator light 2 is inserted into the through hole, the end of the optical fiber 5 extending into the inner cavity of the housing and close to the light-inlet end of the eyepiece 3; the housing 1 is provided with a channel for the optical fiber 5 to pass through.

[0023] The optical fiber 5 of this invention travels along a pre-designed channel within the housing 1. This channel is specifically designed for the installation of the optical fiber 5, ensuring that it can be routed smoothly in a confined space without being squeezed or excessively bent. The other end of the optical fiber 5 extends into the inner cavity of the housing 1 and is precisely positioned near the light inlet of the eyepiece 3. This allows the light source of the indicator light 2, after being transmitted through the optical fiber 5, to be clearly visible at the edge of the field of view or in a designated area when the user observes through the eyepiece 3, thereby providing real-time alerts for device status such as low battery or auxiliary lighting activation. The entire light guide path eliminates the need to reserve installation space for traditional LEDs and light guide sheets between the eyepiece 3 and the image intensifier, effectively adapting to the compact layout of monocular night vision devices while balancing functionality, reliability, and ease of assembly.

[0024] As a further improved technical solution in this embodiment, the snap-fit ​​socket 4 includes a base 42 with a mounting groove 41 and a connecting part 43 located at the bottom end of the base 42; the through hole is provided on the connecting part 43 and communicates with the mounting groove 41; the indicator light 2 is plugged into the mounting groove 41, preferably a miniature through-hole LED, whose pins can be electrically connected to the pre-set elastic electrical contact piece or solder pad in the mounting groove 41 to realize two assembly methods: plug and play or welding fixation; the shape of the snap-fit ​​groove is adapted to the shape of the base 42 and the connecting part 43 to ensure that the snap-fit ​​socket 4 is accurately positioned on the housing 1 and is not easy to loosen, and facilitates automated assembly or on-site replacement; this structure not only improves the installation stability and electrical reliability of the indicator light 2 module, but also allows for quick replacement of faulty light sources without disassembling the whole machine, improving maintenance efficiency.

[0025] As a further improvement in this embodiment, the slot is positioned close to the eyepiece 3, which minimizes the path and bends of the optical fiber 5 after it is led out from the card holder 4, thereby reducing optical transmission loss and simplifying internal wiring. At the same time, its proximity to the eyepiece 3 also helps to accurately project the indicator light onto the edge of the eyepiece 3's field of view, avoiding interference with the main observation image and improving the human-computer interaction experience.

[0026] As a further improvement to this embodiment, the length of the end of the optical fiber 5 extending into the inner cavity of the housing is 5mm. This length has been optimized through optical simulation and actual measurement to ensure that the indicator light can effectively enter the field of view of the eyepiece 3, while avoiding obstruction of the main optical path or contact with other optical components due to excessive extension. The end of the optical fiber 5 can be polished, beveled, or fitted with a micro diffuser to adjust the light output angle and brightness distribution to adapt to different field of view angles of the eyepiece 3 and the position of the user's pupil. In an alternative solution, an adjustable optical fiber 5 sleeve structure with a length of 3–8mm can also be used, and the extension length can be finely adjusted by tightening or snapping to adapt to the optical layout of different models of night vision devices.

[0027] Example 2

[0028] As attached Figure 4-5 As shown, a low-light night vision device, specifically a binocular low-light night vision device, can have optical fibers 5 installed at the light-inlet ends of the two eyepieces 3, with the specific structure being the same as in Embodiment 1. Correspondingly, in the binocular model, independent mounting brackets 4 and optical fiber 5 light-guiding systems can be installed near the left and right eyepieces 3 respectively, for synchronous or differentiated display of status information, such as the left eye indicating battery level and the right eye indicating infrared activation, enhancing the flexibility of information transmission.

[0029] In the above embodiments of this utility model, the indicator light 2 is electrically connected to the low-voltage power supply output terminal of the night vision device's power system via a wire. Specifically, it can be connected to a stable DC voltage provided by a power management module or a voltage regulator circuit, and is controlled by the main control unit to realize the status indication function. As for other components in the low-light night vision device, such as the optical components of the objective lens, image intensifier, and eyepiece, as well as the overall optical path structure, they all adopt existing mature technical solutions. Their structures, principles, and assembly methods have been fully disclosed in the field. Furthermore, the innovation of this utility model does not involve the improvement or reconstruction of the above-mentioned components, so they are omitted here and will not be described in detail.

[0030] In the description of the above embodiments, for the sake of brevity and clarity, some components and their specific structural details that are not directly related to the core innovations of this utility model have been omitted. These omitted parts all fall within the scope of existing technology, and those skilled in the art can fully implement the design and manufacture of these parts based on their professional knowledge and existing technical materials. Therefore, they will not be described in detail here.

[0031] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A low-light night vision device, comprising a housing (1), an indicator light (2), and an eyepiece (3) disposed on the housing (1); characterized in that: The housing (1) is provided with a slot, and a mounting base (4) is fixedly connected to the slot. The indicator light (2) is inserted into the mounting base (4). One end of the mounting base (4) embedded in the slot is provided with a through hole. An optical fiber (5) for receiving the light source of the indicator light (2) is inserted into the through hole. The end of the optical fiber (5) extends into the inner cavity of the housing and is close to the light-inlet end of the eyepiece (3). The housing (1) is provided with a channel for the optical fiber (5) to pass through.

2. The low-light night vision device according to claim 1, characterized in that: The card holder (4) includes a seat (42) with a mounting groove (41) and a connecting part (43) located at the bottom of the seat (42); the through hole is provided on the connecting seat and communicates with the mounting groove (41); the indicator light (2) is inserted into the mounting groove (41); the shape of the card groove is adapted to the shape of the seat (42) and the connecting part (43).

3. The low-light night vision device according to claim 1 or 2, characterized in that: The slot is located close to the eyepiece (3).

4. The low-light night vision device according to claim 1 or 2, characterized in that: The eyepiece (3) is a monocular or a binocular.

5. The low-light night vision device according to claim 1 or 2, characterized in that: The length of the end of the optical fiber (5) extending into the inner cavity of the outer shell is 5 mm.

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