A double-lens night vision device

Abstract

The utility model relates to a double-lens night vision device, comprising: an objective lens module, comprising a camera lens and a fill-light lens which are arranged in parallel and shoot in the same direction; a control mainboard, electrically connected to the camera lens and the fill-light lens; a display module, electrically connected to the control mainboard; an observation piece, both ends of the observation piece are connected to form an observation cavity, one end of the observation piece is connected to the display module part; an eyepiece module, connected to the end of the observation piece away from the display module, the eyepiece module comprises a first eyepiece and a second eyepiece which are arranged in parallel with a front-to-back interval, the first eyepiece and the second eyepiece are both single-focus magnifying lenses, and the widths of the first eyepiece and the second eyepiece both span the left and right eyes of a person.

Description

Technical Field

[0001] The utility model relates to the technical field of night vision devices, in particular to a double-lens night vision device. Background Art

[0002] Night vision goggles are a type of device used for nighttime observation. The captured images are displayed on a display screen through a camera lens and a fill light lens, and the images are observed through an eyepiece. Due to the size limitation of the device, the size of the screen is limited, and thus the size of the image is limited. Therefore, a larger magnification and a wider field of view have always been the pursuit of technicians in this field. Utility Model Content

[0003] In view of the above situation, it is necessary to propose a dual-lens night vision device that can increase the magnification.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a double-lens night vision device, comprising:

[0005] The objective lens module includes a video lens and a fill-in light lens which are arranged in parallel and shoot in the same direction;

[0006] A control mainboard, electrically connected to the camera lens and the fill-in light lens;

[0007] A display module, electrically connected to the control mainboard;

[0008] An observation piece, wherein both ends of the observation piece are connected to form an observation cavity, and one end of the observation piece is connected to the display module part;

[0009] An eyepiece module is connected to one end of the observation piece away from the display module, and the eyepiece module includes a first eyepiece and a second eyepiece that are arranged in parallel with a front-to-back interval, the first eyepiece and the second eyepiece are both single-focus magnifying lenses, and the widths of the first eyepiece and the second eyepiece both span the left and right eyes of a person.

[0010] Furthermore, the distance between the first eyepiece and the second eyepiece is 1-4 mm.

[0011] Furthermore, the focal lengths of the first eyepiece and the second eyepiece are the same.

[0012] Furthermore, the first eyepiece and the second eyepiece are both biconvex lenses, and the curvature radii of both end surfaces of the biconvex lenses are the same.

[0013] Furthermore, the curvature radius of the two end surfaces of the biconvex lens is 280mm-400mm.

[0014] Furthermore, the first eyepiece and the second eyepiece have the same width.

[0015] Furthermore, a spacing frame is provided between the first eyepiece and the second eyepiece.

[0016] Furthermore, the observation cavity includes a rectangular portion and an expansion portion, the expansion portion gradually widens along the width of the rectangular portion, and the expansion portion is arranged close to the eyepiece module.

[0017] Furthermore, the widths of the first eyepiece and the second eyepiece are both greater than the maximum width of the observation cavity.

[0018] Furthermore, the height of the first eyepiece and the second eyepiece is greater than or equal to the height of the display module.

[0019] The beneficial effect of the utility model is that the eyepiece module adopts two single-focus magnifying lenses, and the two single-focus magnifying lenses span the eyes of a person, so that the user can easily align them, and the adaptability is strong, and almost users of different ages and head shapes can be covered. Compared with traditional binocular eyepieces, it can adapt to the eyes of each user without adjusting the spacing, so the pupil distance adjustment mechanism can be cancelled, thereby reducing production costs. The two single-focus magnifying lenses, namely the first eyepiece and the second eyepiece, can cooperate to obtain a greater magnification, and the magnification can be controlled by setting the spacing between the two. The closer the distance, the greater the magnification. During production, the appropriate magnification can be set according to display modules of different sizes, the distance between the display module and the eyepiece module, and the resolution of the display module through the test between the two. And it will be more comfortable to watch the display module with two single-focus magnifying lenses, because the first eyepiece and the second eyepiece will distribute the magnification effect, reducing eye fatigue, while in contrast, the magnification effect of the single-piece magnifying glass is concentrated in the central area, causing eye discomfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic cross-sectional structure diagram of a dual-lens night vision device according to an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the exploded structure of a dual-lens night vision device according to an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the appearance structure of a dual-lens night vision device according to an embodiment of the utility model;

[0023] Figure 4 It is a schematic diagram of the matching structure of an eyepiece module and a partition frame of a dual-lens night vision device according to an embodiment of the utility model;

[0024] Figure 5 It is a structural schematic diagram of a first eyepiece and a second eyepiece of a double-lens night vision device according to an embodiment of the utility model.

[0025] Description of labels:

[0026] 100, objective lens module; 110, camera lens; 120, fill light lens; 200, control main board;

[0027] 300, display module; 400, observation piece; 410, observation cavity; 411, rectangular portion;

[0028] 412, expansion unit; 500, eyepiece module; 510, first eyepiece; 520, second eyepiece;

[0029] 600, housing assembly; 610, objective lens cover; 620, upper cover; 630, lower cover;

[0030] 640, eyepiece mounting frame; 641, partition frame; 642, connecting frame; 700, eye shield;

[0031] 710. There is a gap in the nose. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model more clear, the following is a further detailed description of a dual-lens night vision device of the utility model in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0033] A double-lens night vision device, comprising:

[0034] The objective lens module 100 includes a camera lens 110 and a fill-in light lens 120 which are arranged in parallel and shoot in the same direction;

[0035] The control mainboard 200 is electrically connected to the camera lens 110 and the fill light lens 120;

[0036] The display module 300 is electrically connected to the control mainboard 200;

[0037] The observation piece 400 has two ends connected to form an observation cavity 410, and one end of the observation piece 400 is connected to the display module 300;

[0038] The eyepiece module 500 is connected to one end of the observation piece 400 away from the display module 300. The eyepiece module 500 includes a first eyepiece 510 and a second eyepiece 520 which are arranged in parallel with a front-to-back interval. The first eyepiece 510 and the second eyepiece 520 are both single-focus magnifying lenses, and the widths of the first eyepiece 510 and the second eyepiece 520 both span the left and right eyes of a person.

[0039] The eyepiece module 500 uses two single-focus magnifying lenses, both of which span across the eyes of a person. The user can easily align them, and they are highly adaptable and can cover almost all users of different ages and head shapes. Compared with traditional binocular eyepieces, they can adapt to each user's eyes without adjusting the spacing, so that the pupil distance adjustment mechanism can be eliminated, thereby reducing production costs. The two single-focus magnifying lenses, namely the first eyepiece 510 and the second eyepiece 520, can cooperate to obtain a greater magnification. The magnification can be controlled by setting the spacing between the two. The closer the distance, the greater the magnification. During production, the appropriate magnification can be set according to the display module 300 of different sizes, the distance between the display module 300 and the eyepiece module 500, and the resolution of the display module 300 through tests. And it will be more comfortable to watch the display module 300 with two single-focus magnifying lenses, because the first eyepiece 510 and the second eyepiece 520 will distribute the magnification effect, reducing eye fatigue. In contrast, the magnification effect of a single magnifying glass is concentrated in the central area, causing eye discomfort.

[0040] Further, the distance between the first eyepiece 510 and the second eyepiece 520 is 1-4 mm. Preferably, the distance between the first eyepiece 510 and the second eyepiece 520 is 2.5 mm. It can be understood that the distance here refers to the point where the first eyepiece 510 and the second eyepiece 520 are closest to each other.

[0041] Furthermore, the first eyepiece 510 and the second eyepiece 520 have the same focal length. The first eyepiece 510 and the second eyepiece 520 have the same focal length, and when they are overlapped, the visual effect produced is good, the fatigue of the eyes can be reduced, and the installation and manufacturing are convenient.

[0042] Furthermore, the first eyepiece 510 and the second eyepiece 520 are both double convex lenses, and the curvature radius of the two end faces of the double convex lenses is the same. By using the same convex surface, there is no need to prevent fooling during installation, and the installation is more convenient.

[0043] Furthermore, the curvature radius of the two end surfaces of the biconvex lens is 280 mm-400 mm, preferably 330-360 mm.

[0044] Furthermore, the first eyepiece 510 and the second eyepiece 520 have the same width. In particular, the first eyepiece 510 and the second eyepiece 520 have the same specifications, that is, the two are completely consistent in width, thickness, height, curvature, and focal length.

[0045] Furthermore, a spacing frame 641 is provided between the first eyepiece 510 and the second eyepiece 520. The spacing frame 641 is provided to facilitate maintaining the spacing between the first eyepiece 510 and the second eyepiece 520. Simply, the spacing between the first eyepiece 510 and the second eyepiece 520 can also be maintained by a limiting groove, that is, a first limiting groove and a second limiting groove are provided, the first eyepiece 510 is located in the first limiting groove, and the second eyepiece 520 is located in the second limiting groove, and the spacing between the first limiting groove and the second limiting groove is the spacing between the two eyepieces.

[0046] Furthermore, the observation cavity 410 includes a rectangular portion 411 and an expansion portion 412. The expansion portion 412 gradually widens along the width of the rectangular portion 411, and the expansion portion 412 is arranged close to the eyepiece module 500. The expansion portion 412 is arranged to be more conducive to widening the field of view. The arrangement of the rectangular portion 411 can have a good visual effect and is not easy to produce a sense of spaciousness.

[0047] Furthermore, the widths of the first eyepiece 510 and the second eyepiece 520 are both greater than the maximum width of the observation cavity 410, so that the image of the display module 300 can be better acquired.

[0048] Furthermore, the height of the first eyepiece 510 and the second eyepiece 520 is greater than or equal to the height of the display module 300, so as to ensure that the image of the display module 300 can be completely acquired.

[0049] In particular, it also includes an eye shield 700, which is connected to one end of the eyepiece module 500 away from the display module 300, and the eye shield 700 is made of a flexible material and has an observation avoidance hole for the eyepiece module 500 to be exposed. In particular, the eye shield 700 also has a nose avoidance notch 710.

[0050] It is understandable that the fill light is set as needed, generally an infrared fill light or a low-light fill light. When the light is sufficient, the camera lens 110 is used directly. When the light is insufficient, the infrared fill light or the low-light fill light is used to shoot night vision images.

[0051] It can be understood that the display module 300 generally directly displays the shooting picture of the objective lens module 100 through the control module, and can also play the pre-stored picture as needed.

[0052] Typically, the objective lens module 100 is disposed at one end of the display module 300 that is away from the eyepiece module 500, and may also be disposed at other locations as required.

[0053] It can be understood that the objective lens module 100, the control main board 200, the display module 300, the observation member 400, and the eyepiece module 500 are all installed as a whole through the housing assembly 600. Simply, the housing assembly 600 can be composed of an objective lens cover 610, an upper cover 620, and a lower cover 630, and the upper cover 620 and the lower cover 630 are detachably connected and form an installation cavity, and the control main board 200, the display module 300, the observation member 400, and the eyepiece module 500 are all arranged in the installation cavity, and the objective lens module 100 extends from the installation cavity and closes the objective lens end of the installation cavity through the objective lens cover 610. The eye shield 700 is nested and connected to the housing assembly 600.

[0054] In particular, an eyepiece mounting frame 640 is provided at the eyepiece end between the upper cover 620 and the lower cover 630. The upper cover 620 and the lower cover 630 fix the eyepiece mounting frame 640. The first eyepiece 510, the partition frame 641 and the second eyepiece 520 are sequentially arranged in the eyepiece mounting frame 640. The eyepiece mounting frame 640 is connected to the observation piece 400 through the connecting frame 642.

[0055] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the utility model, the directional indication is only used to explain the relative position relationship and movement of the components under a certain posture (as shown in the attached figure). If the specific posture changes, the directional indication will also change accordingly. It can be understood that the width direction of the present application is the left-right direction, which can refer to the left and right eye positions of a person; the front-to-back direction is the relative direction between the display module and the eyepiece module.

[0056] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0057] To sum up, the dual-lens night vision device provided by the utility model has advantages in providing greater magnification and wider field of view. The magnification is increased by using dual single-focus magnifying lenses, which provides a better observation visual experience.

[0058] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A dual-lens night vision device, characterized in that: include: The objective lens module includes a video lens and a fill-in light lens which are arranged in parallel and shoot in the same direction; A control mainboard, electrically connected to the camera lens and the fill-in light lens; A display module, electrically connected to the control mainboard; An observation piece, wherein both ends of the observation piece are connected to form an observation cavity, and one end of the observation piece is connected to the display module part; An eyepiece module is connected to one end of the observation piece away from the display module, and the eyepiece module includes a first eyepiece and a second eyepiece that are arranged in parallel with a front-to-back interval, the first eyepiece and the second eyepiece are both single-focus magnifying lenses, and the widths of the first eyepiece and the second eyepiece both span the left and right eyes of a person.

2. A dual-lens night vision device according to claim 1, characterized in that: The distance between the first eyepiece and the second eyepiece is 1-4 mm.

3. A dual-lens night vision device according to claim 1, characterized in that: The focal lengths of the first eyepiece and the second eyepiece are the same.

4. A dual-lens night vision device according to claim 1, characterized in that: The first eyepiece and the second eyepiece are both biconvex lenses, and the curvature radii of both end surfaces of the biconvex lenses are the same.

5. A dual-lens night vision device according to claim 4, characterized in that: The curvature radius of the two end surfaces of the biconvex lens is 280mm-400mm.

6. A dual-lens night vision device according to claim 1, characterized in that: The first eyepiece and the second eyepiece have the same width.

7. A dual-lens night vision device according to claim 1, characterized in that: A spacing frame is provided between the first eyepiece and the second eyepiece.

8. A dual-lens night vision device according to claim 1, characterized in that: The observation cavity includes a rectangular portion and an expansion portion, the expansion portion gradually widens along the width of the rectangular portion, and the expansion portion is arranged close to the eyepiece module.

9. A dual-lens night vision device according to claim 1 or 8, characterized in that: The widths of the first eyepiece and the second eyepiece are both greater than the maximum width of the observation cavity.

10. A dual-lens night vision device according to claim 1, characterized in that: The heights of the first eyepiece and the second eyepiece are greater than or equal to the height of the display module.

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