Dual-channel low-light night vision device

Abstract

The utility model discloses a dual-channel low-light night vision device, which comprises a lens body group, a low-light lens group arranged at the front end of the lens body group, an eyepiece group arranged at the rear end of the lens body group, and a white-light lens group, the mirror body set comprises a mirror body shell, an image intensifier installed in the mirror body shell, a controller installed on the mirror body shell, a battery, an infrared light supplementing lamp, a photosensitive lamp and a switch. The controller is electrically connected with the image intensifier, the battery, the infrared light supplement lamp, the photosensitive lamp and the switch. The white-light lens group is mounted at the front end of the lens body group, and the optical axis of the white-light lens group is parallel to the optical axis of the low-light lens group; an image combination prism group used for overlapping the optical axis of the white light lens group and the optical axis of the low-light lens group is mounted in the lens body shell; the image combination prism group comprises an upper beam splitter prism and a lower beam splitter prism which are used for changing the optical axis of the low-light-level mirror group. The LED lamp has the advantage of being capable of being used in both low-illumination and strong-light environments.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of low-light level image intensifier night vision equipment, in particular to a dual-channel low-light night vision device. BACKGROUND

[0002] With the continuous progress of night vision technology, image intensifiers have developed from the first generation to the third generation and even the fourth generation. Modern third and fourth generation image intensifiers are usually equipped with gating technology, which allows the device to automatically shut down or adjust its sensitivity when encountering sudden strong light, to protect the user from temporary blindness and ensure continuous observation ability in extreme lighting conditions. However, this mechanism is not perfect, and there is a short period of visual interruption when switching quickly from extremely dark environments to strong light environments or vice versa, especially within a few seconds of sudden strong light, which can affect key operations such as marching, observation, or command. To address this issue, the combination of low-light and infrared imaging technology provides a solution. By integrating these two technologies, better observation results can be achieved under different lighting conditions. Specifically, when encountering strong light, the low-light channel may be disturbed, but the infrared channel remains unaffected and can continue to provide images. However, this hybrid system also has some limitations. First, the resolution of infrared imaging is relatively low, which means it is not as accurate as low-light imaging in capturing details. In addition, due to the high cost of infrared sensors and lenses, it also leads to an increase in the overall cost of the system, so improvement is urgently needed. SUMMARY

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

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0005] A dual-channel low-light night vision device, comprising a mirror body group, a low-light mirror group installed at the front end of the mirror body group, an eyepiece group installed at the rear end of the mirror body group, and a white light mirror group; the mirror body group comprises a mirror body shell, an image intensifier installed in the mirror body shell, a controller, a battery, an infrared fill light, a photosensitive light, and a switch installed on the mirror body shell; the controller is electrically connected to the image intensifier, the battery, the infrared fill light, the photosensitive light, and the switch; the white light mirror group is installed at the front end of the mirror body group, and its optical axis is parallel to the optical axis of the low-light mirror group; a combined prism group for superimposing the optical axis of the white light mirror group and the optical axis of the low-light mirror group is installed in the mirror body shell; the combined prism group comprises an upper light splitting prism for changing the optical axis of the low-light mirror group, and a lower light splitting prism.

[0006] Preferably, the white light mirror group comprises a white light mirror shell and a white light mirror installed in the white light mirror shell; a filter is installed at the light entrance end of the white light mirror shell.

[0007] Preferably, the white light lens group is rotatably connected to the lens body shell through an eccentric structure.

[0008] Preferably, a relay lens group is installed in the lens body shell between the combined prism group and the image intensifier.

[0009] Preferably, the upper end and / or the lower end of the lens body shell is provided with a support interface.

[0010] Preferably, a rubber compression ring is arranged at the contact position of the image intensifier and the lens body shell.

[0011] Preferably, a connecting seat is arranged on the lens body shell, and the low-light lens group is detachably connected with the connecting seat.

[0012] Preferably, a rear cover plate is detachably connected to the rear end of the lens body shell.

[0013] The above technical scheme has the following advantages:

[0014] 1. The night vision device has a low-light lens group and a white light lens group which are independent of each other, and can be used for observation through a common ocular lens group after combination, and can switch the working mode according to the change of environmental brightness, thereby solving the shortcomings of the traditional single night vision device, making the night vision device applicable in low-illumination and strong-light environments, and especially solving the problem that the user cannot march, observe, command, etc. within a few seconds of suddenly encountering strong light, and effectively improving the applicability of the night vision device. The white light lens group has relatively low cost and relatively high resolution of object details, and can effectively reduce the manufacturing cost of the overall night vision device under the premise of meeting the requirement of accurate imaging.

[0015] 2. The white light lens group adopts a 1x telephoto objective lens, and a filter plate is arranged at the front end of the white light lens to prevent strong light from affecting the observation effect through the lens. The controller of the night vision device can close the image intensifier under strong light according to the photosensitive parameters of the photosensitive lamp, thereby avoiding burning the image intensifier. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of the utility model;

[0017] Figure 2 is a sectional view of the utility model;

[0018] Figure 3 is Figure 1 is a perspective view from another angle;

[0019] Figure 4 is a working principle diagram of the utility model;

[0020] In the drawings:

[0021] 1-mirror group, 2-micro light mirror group, 3-eyepiece group, 4-white light mirror group, 5-combined prism group, 6-eccentric structure, 7-rubber pressure ring, 8-connection seat, 9-back cover plate, 11-mirror body shell, 12-image intensifier, 13-controller, 14-battery, 15-infrared light supplement lamp, 16-light sensitive lamp, 17-switch, 18-relay mirror group, 19-support interface, 41-white light mirror shell, 42-white light mirror piece, 43-filter piece, 51-upper light splitting prism, 52-lower light splitting prism. DETAILED DESCRIPTION

[0022] The specific embodiments of the utility model will be further described below in combination with the drawings. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute the limitation of the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] As shown in the drawings, a double-channel micro light night vision device includes a mirror group 1, a micro light mirror group 2 installed at the front end of the mirror group 1, an eyepiece group 3 installed at the rear end of the mirror group 1, and a white light mirror group 4. The mirror group 1 includes a mirror body shell 11, an image intensifier 12 installed in the mirror body shell 11, a controller 13, a battery 14, an infrared light supplement lamp 15, a light sensitive lamp 16 and a switch 17 installed on the mirror body shell 11. The controller 13 is electrically connected with the image intensifier 12, the battery 14, the infrared light supplement lamp 15, the light sensitive lamp 16 and the switch 17 respectively. The white light mirror group 4 is installed at the front end of the mirror group 1, and the optical axis is parallel to the optical axis of the micro light mirror group 2. The combined prism group 5 for superimposing the optical axis of the white light mirror group 4 and the optical axis of the micro light mirror group 2 is installed in the mirror body shell 11. The combined prism group 5 includes an upper light splitting prism 51 for changing the optical axis of the micro light mirror group 2 and a lower light splitting prism 52.

[0024] In the utility model, the battery 14 is used to supply power for the controller 13, the infrared light supplement lamp 15 and the light sensitive lamp 16 and other electrical components. The switch 17 realizes the on-off operation of the controller 13 and the infrared light supplement lamp 15.

[0025] As the preferred technical scheme of the embodiment, the white light mirror group 4 includes a white light mirror shell 41 and a white light mirror piece 42 installed in the white light mirror shell 41. The light inlet end of the white light mirror shell 41 is provided with a filter piece 43. By arranging the filter piece 43, the light intensity can be reduced, and the observation effect is not affected when strong light passes through the lens. It is ensured that the strong light can still pass through the white light mirror group 4 to effectively observe the target. In order to meet the vision of different observers, the eyepiece group can adopt an eyepiece with adjustable diopter.

[0026] As the preferred technical solution of the embodiment, the white light lens group 4 is rotationally connected to the lens body shell 11 through the eccentric structure 6, and the eccentric structure 6 adopts an existing eccentric adjusting structure, that is, an eccentric ring, etc. The light axis position of the white light lens group 4 can be adjusted through the eccentric structure 6. That is, in order to ensure that the micro light imaging and the white light imaging double channels are switched without time interval, in the optical design, the parallel light paths of the micro light imaging and the white light imaging enter the combined prism, and the two images can be observed through the shared eyepiece; the parallelism and coincidence of the light axes of the micro light imaging and the white light imaging will affect the observation comfort of the user. Based on this, the white light lens group eccentric adjusting structure is designed based on the light axis of the micro light lens group as a reference, which can effectively solve the problem of the double light axis coincidence. The white light lens group adopts a 1-fold telescope objective lens matched with the magnification of the micro objective lens.

[0027] As the preferred technical solution of the embodiment, the relay lens group 18 is installed between the combined prism group 5 and the image intensifier 12 in the lens body shell 11. By arranging the relay lens group 18, it can be ensured that the micro light imaging entering the combined prism does not attenuate, and the forming quality is ensured.

[0028] As the preferred technical solution of the embodiment, the upper end and the lower end of the lens body shell 11 are provided with support interfaces 19. By selecting the corresponding support interfaces 19 for installation, the different needs of different users for left and right eyes can be met.

[0029] As the preferred technical solution of the embodiment, the rubber compression ring 7 is arranged at the contact position of the image intensifier 12 and the lens body shell 11, which can facilitate the quick disassembly of the image intensifier 12, and can also protect the image intensifier 12 to a certain extent.

[0030] As the preferred technical solution of the embodiment, the lens body shell 11 is provided with a connecting seat 8, and the micro light lens group 2 is detachably connected with the connecting seat 8, such as clamping or threaded connection, etc., so as to facilitate the quick disassembly of the micro light lens group 2 for maintenance.

[0031] As the preferred technical solution of the embodiment, the rear end of the lens body shell 11 is detachably connected with a rear cover plate 9, so as to facilitate the disassembly of the related components of the lens body shell 11.

[0032] In operation, the image of the low-light lens group 2 passes through the image intensifier 12, the relay lens group 18 and the upper light splitting prism 51 to the lower light splitting prism 52, and finally enters the eyepiece group 3 through the lower light splitting prism 52, while the image of the white-light lens group 4 directly enters the eyepiece group 3 through the lower light splitting prism 52. When the low-light lens group 2 encounters strong light in a dark environment, the controller 13 stops the image intensifier 12 from working according to the signal of the photosensitive lamp 16, and protects the image intensifier 12. When the strong light disappears, the controller 13 controls the image intensifier 12 to resume work according to the signal of the photosensitive lamp 16. The observation effect is improved in a lower illumination and darker environment, and at the same time, the infrared light supplementing lamp 15 is arranged in the utility model, which is turned on or off through the manual switch 17 to meet the light supplementing and illumination in a dark environment.

[0033] The switches, electronic components and controllers involved in the utility model are all prior art, and can be realized by those skilled in the art without further description. At the same time, the content protected by the utility model does not involve the improvement of software and methods.

[0034] In the description of the above embodiments, some components and their specific structural details that are not directly related to the core innovative points of the application are omitted in order to make the description concise and clear. These omitted parts all belong to the existing technical field, and those skilled in the art can design and manufacture these parts according to their professional knowledge and existing technical materials. Therefore, detailed description will not be given here.

[0035] The embodiments of the utility model are described in detail in combination with the drawings, but the utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and still fall within the protection scope of the utility model.

Claims

1. A dual-channel low-light night vision device, comprising a mirror body group (1), a low-light mirror group (2) installed at the front end of the mirror body group (1), an eyepiece group (3) installed at the rear end of the mirror body group (1), and a white light mirror group (4); the mirror body group (1) comprises a mirror body shell (11), an image intensifier (12) installed in the mirror body shell (11), a controller (13), a battery (14), an infrared light supplement lamp (15), a photosensitive lamp (16), and a switch (17) installed on the mirror body shell (11); the controller (13) is electrically connected with the image intensifier (12), the battery (14), the infrared light supplement lamp (15), the photosensitive lamp (16), and the switch (17) respectively; characterized in that: The white light lens group (4) is installed at the front end of the lens body group (1), and its optical axis is parallel to the optical axis of the micro light lens group (2); the lens body shell (11) is internally provided with a combined prism group (5) for superimposing the optical axis of the white light lens group (4) and the optical axis of the micro light lens group (2); the combined prism group (5) comprises an upper light splitting prism (51) for changing the optical axis of the micro light lens group (2) and a lower light splitting prism (52).

2. The dual channel micro-light night vision device according to claim 1, characterized in that: The white light lens group (4) comprises a white light lens shell (41) and a white light lens (42) installed in the white light lens shell (41); the light inlet end of the white light lens shell (41) is provided with a filter lens (43).

3. The dual channel micro-light night vision device according to claim 1 or 2, characterized in that: The white light lens group (4) is rotationally connected to the lens body shell (11) through an eccentric structure (6).

4. The dual channel micro-light night vision device according to claim 1 or 2, characterized in that: The lens body shell (11) is internally provided with a relay lens group (18) between the combined prism group (5) and an image intensifier (12).

5. The dual channel micro-light night vision device according to claim 1 or 2, characterized in that: The upper end and / or the lower end of the lens body shell (11) is provided with a support interface (19).

6. The dual channel micro-light night vision device according to claim 1 or 2, characterized in that: The image intensifier (12) is provided with a rubber compression ring (7) at the contact position with the lens body shell (11).

7. The dual channel micro-light night vision device according to claim 1 or 2, characterized in that: The lens body shell (11) is provided with a connecting seat (8), and the micro light lens group (2) is detachably connected to the connecting seat (8).

8. The dual channel micro-light night vision device according to claim 1 or 2, characterized in that: The rear end of the lens body shell (11) is detachably connected with a rear cover plate (9).

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