CN214704190U - Reticle and photoelectric equipment of anti-cat eye effect - Google Patents
Reticle and photoelectric equipment of anti-cat eye effect Download PDFInfo
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- CN214704190U CN214704190U CN202121406749.8U CN202121406749U CN214704190U CN 214704190 U CN214704190 U CN 214704190U CN 202121406749 U CN202121406749 U CN 202121406749U CN 214704190 U CN214704190 U CN 214704190U
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Abstract
The utility model provides a reticle and optoelectronic equipment of anti cat eye effect relates to optoelectronic equipment technical field. The utility model provides a reticle of anti-cat eye effect, includes the lens main part, is provided with division sign portion in the above-mentioned lens main part, and above-mentioned division sign portion sets up along the tangent plane direction of above-mentioned lens main part, and the relative plane slope setting at above-mentioned division sign portion place of side around the above-mentioned lens main part, and the trailing flank and the leading flank of above-mentioned lens main part are parallel. The reticle can reduce the cat eye effect. The reticle is applied to an optoelectronic device. The cat eye effect of the photoelectric equipment is reduced, and the photoelectric equipment is not easy to detect.
Description
Technical Field
The utility model relates to a photoelectric equipment technical field particularly, relates to a reticle and photoelectric equipment of anti-cat eye effect.
Background
The "cat eye" effect is commonly present in the optical window of the optoelectronic device, and is a physical basis for the active detection of the optical window. By utilizing the cat eye effect, the laser active detection system greatly improves the combat efficiency of a battlefield weapon system by virtue of higher positioning precision and fast detection speed. Even if the enemy adopts a passive observation mode, such as various night vision equipment such as a low-light night vision device and a thermal imager, the enemy can be exposed without loss under the condition of implementing the cat eye active detection. How to reduce the cat eye effect from the optical structure design and reduce the probability that the optical window is detected becomes the problem to be solved urgently for improving the survival capability of the photoelectric equipment battlefield.
In summary, we provide a reticle and an optoelectronic device with anti-cat-eye effect to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reticle and photoelectric device of anti cat eye effect has the function that reduces photoelectric device "cat eye" effect.
The embodiment of the utility model is realized like this:
in a first aspect, an embodiment of the present application provides a reticle with an anti-cat-eye effect, including:
the lens comprises a lens body, wherein a division identification part is arranged in the lens body, the division identification part is arranged along the section direction of the lens body, the front side and the rear side of the lens body are obliquely arranged relative to the plane where the division identification part is arranged, and the rear side and the front side of the lens body are parallel.
In some embodiments of the present invention, the lens body is a flat plate with equal thickness.
In some embodiments of the present invention, the lens body includes:
a front lens, the front side of the front lens is obliquely arranged relative to the back side of the front lens;
the rear lens is arranged on the rear side surface of the front lens, and the dividing mark part is arranged on one side of the rear lens opposite to the front lens.
In some embodiments of the present invention, the front lens and the rear lens are molded by gluing.
In some embodiments of the present invention, the structure and shape of the front lens and the rear lens are the same.
In a second aspect, an embodiment of the present application provides an optoelectronic device, which includes the above-mentioned reticle, where the above-mentioned reticle is disposed in an optical window of the optoelectronic device, the above-mentioned optical window has an objective lens, and the above-mentioned division identifier is located at a focal plane of the objective lens.
Compared with the prior art, the embodiment of the utility model has following advantage or beneficial effect at least:
the utility model provides a reticle of anti-cat eye effect, includes the lens main part, is provided with division sign portion in the above-mentioned lens main part, and above-mentioned division sign portion sets up along the tangent plane direction of above-mentioned lens main part, and the relative plane slope setting at above-mentioned division sign portion place of side around the above-mentioned lens main part, and the trailing flank and the leading flank of above-mentioned lens main part are parallel. The lens main body is arranged in the photoelectric equipment, the division identification part is perpendicular to the light path, namely, the front side face of the lens main body and the light path of the photoelectric equipment form a certain inclination angle, when incident light irradiates on the front side face of the lens main body, because the front side face of the lens main body is obliquely arranged, the light reflected by the lens main body has a certain included angle relative to the incident light, the light reflected by the front side face of the lens main body irradiates on the wall face of the photoelectric equipment, most of the reflected light cannot be emitted out of an optical window of the photoelectric equipment, the purpose of weakening the reflected light is achieved, the cat eye effect of the incident light is reduced, and the photoelectric equipment is not easy to detect by a detector. The utility model discloses a design has the function that reduces opto-electronic equipment "cat eye" effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a reticle with an anti-cat-eye effect according to an embodiment of the present invention;
FIG. 2 is a front view of a reticle with anti-cat eye effect according to an embodiment of the present invention;
fig. 3 is a side view of the reticle with anti-cat-eye effect according to the embodiment of the present invention.
Icon: 1-front lens, 2-rear lens and 3-division mark part.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description of the present invention and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and therefore, the present invention should not be construed as being limited thereto. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, "a plurality" means at least 2.
In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Example 1
Referring to fig. 1 to 3, the present embodiment provides a reticle with anti-cat-eye effect, including:
the lens comprises a lens body, wherein a division identification part 3 is arranged in the lens body, the division identification part 3 is arranged along the section direction of the lens body, the front side and the rear side of the lens body are obliquely arranged relative to the plane where the division identification part 3 is arranged, and the rear side and the front side of the lens body are parallel.
In the optical device, when a laser beam enters a lens of the optical device, the beam is returned by reflection of the reticle, and reflected light having high brightness and concentrated energy in the incident direction is generated. The optical system has a strong return characteristic along the original path for the incident light, which is called a "cat eye effect". The echo power of the "cat eye" target is about 10 of the background diffuse reflected power2～103Therefore, the target can be quickly and accurately positioned by detecting the optical window of the photoelectric equipment. Reticle (reticle has extremely high requirement on cleanliness and any tiny ashDust can generate large black spots during observation, and the accuracy requirement of the mounting position of the reticle is extremely high, so the reticle is not required to be dismounted as much as possible, and if the reticle is dismounted, the reticle is required to be restored as original. ) Typically in the focal plane of the objective lens of the optical window of the optoelectronic device. The division identification part 3 is a division dense bit line, and is designed according to the function (such as ranging and positioning) requirements of the photoelectric equipment. The division mark part 3 needs to form a plane and is perpendicular to the optical axis, the division mark part 3 is arranged along the section direction of the lens body, that is, the division mark part 3 is arranged along the radial direction of the lens body, and the plane where the division mark part 3 is located is perpendicular to the axis of the lens body. The division mark part 3 is drawn by black lines, and when the investigation is carried out, the color difference of the black division mark part 3 cannot be changed too much, so that the visual impact cannot be brought to a user, and the attention of the user is influenced to the minimum degree.
In the actual mounting of the reticle, the lens body is mounted to the optical window of the electro-optical device, and the reticle marking section 3 is mounted in a direction perpendicular to the optical axis. The photoelectric device can be various night vision equipment such as a low-light night vision device and a thermal imager.
The front side of the lens body faces to one side of the incident light, the back side of the lens body faces to one side of the incident light, and when the lens body is installed, the front side of the lens body faces to an inlet of the photoelectric equipment. The lens main body is arranged in the photoelectric equipment, the division identification part 3 is perpendicular to the optical axis, namely, the front side surface of the lens main body and the optical axis of the photoelectric equipment form a certain inclination angle, when incident light irradiates on the front side surface of the lens main body, because the front side surface of the lens main body is obliquely arranged, the light reflected by the lens main body has a certain included angle relative to the incident light, the light reflected by the front side surface of the lens main body irradiates on the wall surface of the photoelectric equipment, most of the reflected light cannot be emitted out of an optical window of the photoelectric equipment, the purpose of weakening the reflected light is achieved, the cat eye effect of the incident light is reduced, and the photoelectric equipment is not easy to detect by a detector. The utility model discloses a design has the function that reduces opto-electronic equipment "cat eye" effect.
In some embodiments of the present invention, the lens body is a flat plate with equal thickness.
In the above embodiments, the lens body is made of optical glass (optical glass capable of changing the propagation direction of light and changing the relative spectral distribution of ultraviolet, visible or infrared light; optical glass in a narrow sense means colorless optical glass; optical glass in a broad sense also includes colored optical glass, laser glass, quartz optical glass, radiation-resistant glass, ultraviolet-infrared optical glass, fiber optical glass, acousto-optic glass, magneto-optic glass and photochromic glass; optical glass can be used for manufacturing lenses, prisms, mirrors, windows and the like in optical instruments; components made of optical glass are key elements in optical instruments). The optical glass transmits light by means of refraction, reflection and transmission or changes the intensity or spectral distribution of the light by absorption, and has stable optical properties and high optical uniformity. And the thickness of the lens main body is ensured to be uniform, so that the manufactured lens main body cannot influence the original imaging light path. It should be noted here that the lens main body is a flat plate, which is only one of the embodiments of the present invention, and is not limited to the structure of the lens main body, and the lens main body capable of reducing the cat eye effect in other embodiments can be applied to this point, and details are not repeated here.
In some embodiments of the present invention, the lens body includes:
a front lens 1, wherein the front side surface of the front lens 1 is obliquely arranged relative to the back side surface;
a rear lens 2, the rear lens 2 being disposed on a rear side surface of the front lens 1, and the division mark 3 being disposed on a side of the rear lens 2 opposite to the front lens 1.
In the above embodiment, the lens body is made by combining the front lens 1 and the rear lens 2, after the front lens 1 and the rear lens 2 are processed and manufactured together, the front surface of the rear lens 2 is etched with the division line, and then the front lens 1 and the rear lens 2 are connected together, thereby realizing the processing and manufacturing of the lens body. By the design mode, the lens main body is easy to machine and form. It should be noted here that the front lens 1 and the rear lens 2 are both made of optical glass. The rear side of the rear lens 2 is parallel to the front side of the front lens 1. The front side inclination angle of the front lens 1 is the same as the back side inclination angle of the back lens 2, the incident light path irradiates the front side of the front lens 1 and then the lens body is injected, and the rear side of the back lens 2 is injected.
In some embodiments of the present invention, the front lens 1 and the rear lens 2 are formed by gluing.
In the above embodiment, the front lens 1 and the rear lens 2 are molded by gluing, so that the lens main body has the advantage of rapid molding during processing, and the manufacturing cost of the lens main body formed by combining the front lens 1 and the rear lens 2 is lower.
In some embodiments of the present invention, the structure and shape of the front lens 1 and the rear lens 2 are the same.
In the above embodiment, the front lens 1 and the rear lens 2 are both square, the front lens 1 and the rear lens 2 have the same structure (both adopt optical glass), the front lens 1 and the rear lens 2 have the same shape, and the front lens 1 and the rear lens 2 are flatly butted, so that when the front lens 1 and the rear lens 2 are glued and connected, glue injection sealing is performed at the butted position of the front lens 1 and the rear lens 2.
Example 2
The embodiment provides an optoelectronic device, which includes the above-mentioned reticle, where the above-mentioned reticle is disposed in an optical window of the optoelectronic device, the above-mentioned optical window has an objective lens, and the above-mentioned division identifier is located at a focal plane of the objective lens.
In the above embodiment, the reticle can reduce the "cat eye" effect of the optoelectronic device manufactured by the reticle under the condition that the opposite side implements the "cat eye" active detection, so that the optoelectronic device is not easy to detect. The division mark part 3 is positioned at the focal plane of the objective lens, so that the imaging quality of the photoelectric equipment is in the best state.
The method for determining the reflection inclination angle of the reticle comprises the following steps:
s1: determining the field angle 2 alpha of the photoelectric equipment;
s2: and taking the reflection inclination angle of the reticle as xi, so that xi is larger than alpha.
The reflection inclination angle of the reticle is the inclination angle of the front side surface of the front lens 1. When designing a reticle of an optoelectronic device, the reflection inclination angle of the reticle is kept to be larger than a half field angle (half of a field angle) of the optoelectronic device, and when xi is not larger than alpha, the most marginal imaging light (the maximum incidence angle of the detection laser) is vertical to a plane mirror, so that larger mirror reflection is caused. Therefore, the most disadvantageous situation does not occur as long as the inclination angle satisfies ξ greater than α, i.e., the inclination angle is greater than the angle of view. The method can determine the range of the reflection inclination angle, and the cat eye effect of the reticle in the range is greatly reduced.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An anti-cat-eye effect reticle, comprising:
the lens comprises a lens body, wherein a division identification part is arranged in the lens body, the division identification part is arranged along the section direction of the lens body, the front side and the rear side of the lens body are obliquely arranged relative to the plane where the division identification part is located, and the rear side and the front side of the lens body are parallel.
2. The anti-cat-eye effect reticle of claim 1, wherein the lens body is a flat plate of equal thickness.
3. An anti-cat-eye effect reticle according to claim 2, wherein the lens body comprises:
the front side surface of the front lens is obliquely arranged relative to the back side surface of the front lens;
the rear lens is arranged on the rear side face of the front lens, and the division identification part is arranged on one side of the rear lens, which is opposite to the front lens.
4. The anti-cat-eye effect reticle set forth in claim 3 wherein said anterior lens and said posterior lens are molded by glue.
5. The anti-cat-eye effect reticle set forth in claim 4 wherein the anterior lens and the posterior lens are identical in structure and shape.
6. An optoelectronic device comprising a reticle of any one of claims 1 to 5, the reticle being disposed in an optical window of the optoelectronic device, the optical window having an objective lens, and the reticle identification portion being located at a focal plane of the objective lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121406749.8U CN214704190U (en) | 2021-06-23 | 2021-06-23 | Reticle and photoelectric equipment of anti-cat eye effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121406749.8U CN214704190U (en) | 2021-06-23 | 2021-06-23 | Reticle and photoelectric equipment of anti-cat eye effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214704190U true CN214704190U (en) | 2021-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121406749.8U Active CN214704190U (en) | 2021-06-23 | 2021-06-23 | Reticle and photoelectric equipment of anti-cat eye effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214704190U (en) |
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2021
- 2021-06-23 CN CN202121406749.8U patent/CN214704190U/en active Active
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