Infrared optical steering projection imaging structure

Abstract

The utility model provides an infrared optical steering projection imaging structure, which comprises a first lens arranged in a first direction, a steering prism arranged on one side of the first lens, a second lens arranged on one side of the steering prism without the first lens in a second direction, a third lens arranged on one side of the second lens, and a fourth lens arranged on the other side of the third lens. One side of the third lens is provided with a display screen, and one side of the first lens is provided with an eyepiece external interface. The utility model has the advantages that the light is converged on the steering prism after being conducted by the third lens and the second lens, and the light rotates and is conducted to the first lens under the action of the steering prism. After the light is transmitted through the first lens, a user can observe the light from the eyepiece assembly. Thus, the purpose of steering projection imaging can be achieved, observation is not limited to a single direction any more, then a user can conduct steering observation in a needed application scene, and the method can adapt to different application scenes.

Description

Technical Field

[0001] This utility model relates to the field of projection imaging technology, and in particular to an infrared optical steering projection imaging structure. Background Technology

[0002] Infrared night vision devices utilize photoelectric conversion technology to convert infrared radiation, invisible to the naked eye, into visible images in darkness or low-light conditions, greatly expanding people's field of vision and observation capabilities. Due to their superior night vision capabilities, infrared night vision devices are widely used in military, security, industrial, medical, and entertainment fields.

[0003] Currently, most infrared night vision devices on the market are integrated instruments, combining the objective lens assembly, infrared camera module assembly, display screen assembly, and eyepiece assembly into a single product. These can be handheld or head-mounted. However, these types of infrared night vision devices generally use axial imaging, making them unsuitable for applications requiring imaging from different directions. Therefore, an improved infrared optical directional projection imaging structure is proposed. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this invention is to propose an infrared optical steering projection imaging structure to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of the present invention provides an infrared optical directional projection imaging structure, including a first lens disposed in a first direction, a directional prism disposed on one side of the first lens, a second lens disposed in a second direction on the side of the directional prism not disposed of the first lens, a third lens disposed on one side of the second lens, a display screen disposed on one side of the third lens, an eyepiece external interface disposed on one side of the first lens, and an eyepiece assembly disposed within the eyepiece external interface.

[0007] Preferably, in any of the above schemes, the first direction and the second direction are set perpendicularly, and the steering prism is a right-angle prism.

[0008] Preferably, in any of the above embodiments, the first lens is a single convex flat lens with its convex surface facing the eyepiece assembly.

[0009] Adopt the above technical scheme: by setting a plurality of lenses in the first direction and the second direction in turn, and setting the turning prism, the light can be projected in the first direction and the second direction after turning. The first lens is arranged in the first direction, which is used for conducting the light with the turning prism, so that the user can observe the light at the ocular assembly. The first lens adopts a single convex flat lens, which is beneficial to the user to better observe the light. The turning prism adopts a right-angle prism, so that the light can be turned between the second direction and the first direction which are perpendicular to each other, so that the user can observe the scene in the second direction from the first direction.

[0010] Preferably, according to any one of the above solutions, the second lens adopts a double convex lens, and the R value and chord height of the convex surface facing the turning prism are smaller than the R value and chord height of the convex surface facing the third lens.

[0011] Preferably, according to any one of the above solutions, the third lens adopts a double concave lens, and the R value and chord height of the concave surface facing the second lens are smaller than the R value and chord height of the concave surface facing the display screen.

[0012] Adopt the above technical scheme: the second lens and the third lens are arranged to conduct the light and assist the turning prism to turn the light. The second lens adopts a double convex lens and the third lens adopts a double concave lens, so that the light can be better conducted to the turning prism. By controlling the chord height and R value of different surfaces of the second lens and the third lens, the light can be better conducted to the turning prism, avoiding the loss of light and the like.

[0013] Preferably, according to any one of the above solutions, the distance between the first lens and the turning prism is 1mm±0.1mm, and the distance between the second lens and the turning prism is 11mm±0.1mm.

[0014] Preferably, according to any one of the above solutions, the display screen adopts an OLED display screen, and the distance between the display screen and the third lens is 1.2mm±0.1mm.

[0015] Adopt the above technical scheme: the ocular external interface is arranged in the first direction, which provides a mounting platform for the ocular assembly and provides conditions for replacing different ocular assemblies. The arrangement of the ocular external interface enables the turning projection system to use ocular assemblies with different focal lengths for observation, forming different magnification ratios and improving the flexibility of use. By controlling the distance between the first lens and the turning prism, the distance between the second lens and the turning prism, and the distance between the display screen and the third lens, the light can be better conducted between the lenses and the turning prism, which is beneficial to improve the imaging quality.

[0016] Compared with the prior art, the utility model has the advantages and beneficial effects that:

[0017] 1. The infrared optical turning projection imaging structure, by setting the first lens in the first direction, the turning prism and the second lens, the third lens in the second direction and the like structure, the light is converged to the turning prism after the conduction of the third lens, the second lens, under the action of the turning prism, the light is rotated and conducted to the first lens. After the conduction of the light through the first lens, the user can observe the light from the eyepiece assembly. In this way, the purpose of turning projection imaging can be achieved, so that the observation is no longer limited to a single direction, and the user can observe in the required application scene, which can adapt to different application scenes.

[0018] 2. The infrared optical turning projection imaging structure, by setting the eyepiece external interface in the first direction, the eyepiece external interface provides the mounting platform for the eyepiece assembly, and provides the condition for replacing different eyepiece assemblies. The setting of the eyepiece external interface makes the turning projection system be able to observe by using the eyepiece assemblies with different focal lengths, form different magnification, and improve the flexibility of use.

[0019] The additional aspects and advantages of the present application will be partially given in the following description, some will become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1 The system structure schematic diagram of the present application.

[0022] In the figure: 1-first lens, 2-turning prism, 3-second lens, 4-third lens, 5-display screen, 6-eyepiece external interface, 7-eyepiece assembly. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0024] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connect, can be mechanical connection, also can be electrical connection, can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication. For ordinary skilled person in the art, can understand the specific meaning of above-mentioned terms in the utility model according to specific circumstances.

[0025] As Figure 1 The utility model discloses, including the first lens 1 of setting in the first direction, the side of first lens 1 is provided with the deflection prism 2, the side of deflection prism 2 is not provided with the second lens 3 in the second direction, the side of second lens 3 is provided with third lens 4, the side of third lens 4 is provided with display screen 5, the side of first lens 1 is provided with the eyepiece external interface 6, the eyepiece external interface 6 is provided with the eyepiece assembly 7.

[0026] Embodiment 1: the first direction and the second direction are vertically arranged, and the deflection prism 2 adopts a right-angle prism. The first lens 1 adopts a single convex flat lens, and the convex surface thereof faces the direction of the eyepiece assembly 7. By sequentially arranging a plurality of lenses in the first direction and the second direction and arranging the deflection prism 2, the light rays can be projected after being deflected along the first direction and the second direction. The first lens 1 is arranged in the first direction to conduct the light rays in cooperation with the deflection prism 2, so that the user can observe the light rays at the eyepiece assembly 7. The first lens 1 adopts a single convex flat lens, which is conducive to better observation of the light rays by the user. The deflection prism 2 adopts a right-angle prism, so that the light rays can be deflected between the second direction and the first direction which are perpendicular to each other, so that the user can observe the scene in the second direction from the first direction.

[0027] Embodiment 2: the second lens 3 adopts a double convex lens, and the R value and the chord height of the convex surface thereof facing the deflection prism 2 are all less than the R value and the chord height of the convex surface thereof facing the third lens 4. The third lens 4 adopts a double concave lens, and the R value and the chord height of the concave surface thereof facing the second lens 3 are all less than the R value and the chord height of the concave surface thereof facing the display screen 5. The second lens 3 and the third lens 4 are arranged to conduct the light rays and assist the deflection prism 2 in deflecting the light rays. The second lens 3 adopts a double convex lens, and the third lens 4 adopts a double concave lens, so that the light rays can be better conducted toward the deflection prism 2. By controlling the chord height and the R value of different surfaces of the second lens 3 and the third lens 4, the light rays can be better conducted toward the deflection prism 2, and the loss of the light rays and other phenomena are avoided.

[0028] In the embodiment 3, the distance between the first lens 1 and the turning prism 2 is 1mm±0.1mm, the distance between the second lens 3 and the turning prism 2 is 11mm±0.1mm, the display screen 5 is an OLED display screen, and the distance between the display screen 5 and the third lens 3 is 1.2mm±0.1mm.

[0029] The working principle of the utility model is as follows:

[0030] S1, the light is converged to the turning prism 2 after the conduction of the third lens 4 and the second lens 3, and the light is rotated and conducted to the first lens 1 under the action of the turning prism 2.

[0031] S2, the eyepiece external interface 6 provides the mounting platform for the eyepiece assembly 7, provides the condition for replacing different eyepiece assemblies 7, makes the turning projection system can utilize the eyepiece assembly 7 of different focal lengths to observe, forms different magnification.

[0032] Compared with the prior art, the utility model has the following beneficial effects:

[0033] 1, the infrared optical turning projection imaging structure, through setting at the first direction first lens 1, turning prism 2 and at the second direction second lens 3, third lens 4 and other structures, the light is converged to the turning prism 2 after the conduction of the third lens 4 and the second lens 3, and the light is rotated and conducted to the first lens 1 under the action of the turning prism 2.

[0034] 2, the infrared optical turning projection imaging structure, through setting eyepiece external interface 6 at the first direction, the eyepiece external interface 6 provides the mounting platform for the eyepiece assembly 7, also provides the condition for replacing different eyepiece assemblies 7.

Claims

1. An infrared optical turning projection imaging structure, characterized in that, The application relates to a lens device, which comprises a first lens (1) arranged in a first direction, one side of the first lens (1) is provided with a turning prism (2), one side of the turning prism (2) is provided with a second lens (3) arranged in a second direction, one side of the second lens (3) is provided with a third lens (4), one side of the third lens (4) is provided with a display screen (5), one side of the first lens (1) is provided with an eyepiece external interface (6), and the eyepiece external interface (6) is internally provided with an eyepiece assembly (7).

2. The infrared optical turning projection imaging structure according to claim 1, wherein: The first direction and the second direction are arranged perpendicularly, and the turning prism (2) is a right-angle prism.

3. The infrared optical turning projection imaging structure of claim 2, wherein: The first lens (1) is a single-convex flat lens, and the convex surface faces the direction of the eyepiece assembly (7).

4. The infrared optical turning projection imaging structure of claim 3, wherein: The second lens (3) is a double-convex lens, and the R value and chord height of the convex surface facing the turning prism (2) are smaller than the R value and chord height of the convex surface facing the third lens (4).

5. The infrared optical turning projection imaging structure according to claim 4, wherein: The third lens (4) is a double-concave lens, and the R value and chord height of the concave surface facing the second lens (3) are smaller than the R value and chord height of the concave surface facing the display screen (5).

6. The infrared optical turning projection imaging structure of claim 5, wherein: The distance between the first lens (1) and the turning prism (2) is 1mm+ / -0.1mm, and the distance between the second lens (3) and the turning prism (2) is 11mm+ / -0.1mm.

7. The infrared optical turning projection imaging structure of claim 5, wherein: The display screen (5) is an OLED display screen, and the distance between the display screen (5) and the third lens (4) is 1.2mm+ / -0.1mm.

Images