A split illumination structure with dual light sources and a sight

Abstract

The application provides a divided illumination structure with double light sources, which comprises a light source group, a light collecting part, a light folding part and a scale in sequence along the light propagation direction of the divided illumination structure, the light source group comprises a first light source and a second light source which are symmetric to the center of the scale, and the light emitted by the first light source or the second light source is sequentially irradiated to the center of the scale through the light collecting part and the light folding part. The first light source or the second light source of the divided illumination structure converges the divergent light through the light collecting part, and then the converged light is turned to the center of the scale through the light folding part, so that the light can be guided to the center of the scale no matter the first light source or the second light source is used, the phenomenon that one of the light sources deviates from the irradiation is avoided, the components of the divided illumination structure are arranged in sequence, the distance between the light source and the scale is shortened to the maximum, the brightness of the scale is improved, the structure space is saved, and the assembling and adjusting difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sighting devices, in particular to a split illumination structure with double light sources and a sighting device. BACKGROUND

[0002] In order to better aim at a target in strong light or to see the split clearly at night, the existing sighting device (such as but not limited to a prism gun sight) often illuminates the split with a light source to improve the brightness of the split and thus the visual sensitivity of the user of the sighting device. However, when the color of the background environment is similar to the color of the light source, the user's eyes are prone to ignore the split illuminated by the light source. For example, when the background environment is green vegetation, the split illuminated by a green light source is prone to blend in with the color of the vegetation and is not easy to distinguish. For another example, when the background environment is yellow or red vegetation, the split illuminated by a red light source is also not easy to distinguish. Therefore, in the prior art, two colors of light sources are used to provide illumination for the split in order to make the split stand out from the background environment and thus be easy to distinguish the target to be shot from the split aiming point. For example, patent No. ZL200320116040.X, entitled "Sighting scope with light-emitting aiming function" discloses a structure diagram of two colors of light sources. Referring to Fig. 9 of the patent document, the two light sources are combined side by side. Figure 1 (a), when the light of light source 1 or light source 2 cannot cover the entire split, the brightness of the split is not uniform. As shown in Figure 1 (b), when the light of light source 1 can cover the entire split, and the light of light source 2 can only cover part of the split, only one light source can uniformly illuminate the split, and the other light source cannot uniformly illuminate the split. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a split illumination structure with double light sources, which can make the optical axes of the double light sources pass through the center of the split.

[0004] Correspondingly, another technical problem to be solved by the present application is to provide a sighting device with the above split illumination structure, which can make the optical axes of the double light sources pass through the center of the split.

[0005] As for a divided lighting structure with dual light sources, the technical solution adopted by the present invention is: a divided lighting structure with dual light sources, including a light source group, a focusing element, a refractive element and a division arranged in sequence along the light propagation direction of the divided lighting structure, the light source group includes two first light sources and a second light source that are symmetrical about the center of the division, and the light emitted by the first light source or the second light source passes through the focusing element and the refractive element in sequence to irradiate the center of the division.

[0006] Compared with the existing technology, the first light source or the second light source of the divided lighting structure converges the divergent light through the focusing member and then passes through the refracting member to turn the converged light to the center of the division. Therefore, whether the first light source or the second light source is used, the light can be guided to the center of the division, avoiding the phenomenon of one of the light sources deviating from the illumination. Moreover, the components of the divided lighting structure are arranged in sequence, which minimizes the distance between the light source and the division, thereby improving the brightness of the division and the utilization rate of the light source. At the same time, it can also save structural space, reduce the difficulty of installation and adjustment, and increase impact resistance.

[0007] Furthermore, the first light source or the second light source can be selected as an LED lamp bead or a laser.

[0008] Furthermore, the first light source and the second light source are light sources of different colors.

[0009] In another embodiment, the first light source and the second light source are light sources of the same color.

[0010] Furthermore, the focusing element is a first positive lens, the center of the first positive lens is collinear with the center of the division, and the refractive element is two reflective mirrors with opposite reflective surfaces, and the two reflective mirrors respectively deflect the light of the first light source and the second light source to the center of the division.

[0011] Furthermore, the first light source, the second light source and the first positive lens are packaged as one.

[0012] In another embodiment, the focusing element is a second positive lens and a third positive lens corresponding to the first light source and the second light source respectively, the refractive element is a fourth positive lens, and the center of the fourth positive lens is collinear with the center of the division.

[0013] Furthermore, the first light source and the second positive lens are packaged as one body, and the second light source and the third positive lens are packaged as one body.

[0014] In another embodiment, the reticle illumination structure further comprises a diffusion film arranged between the light folding member and the reticle. After passing through the diffusion film, the light rays become secondary light sources with larger area, better uniformity and stable chromaticity, which can not only meet the requirement of covering the whole pattern of the reticle, but also have uniform brightness, thereby improving the comfort of the user of the sighting device.

[0015] For a sighting device, the technical scheme adopted by the present application is as follows: a sighting device comprising the reticle illumination structure according to any one of the above-mentioned schemes.

[0016] Compared with the prior art, the sighting device can guide the light rays to the center of the reticle by converging the divergent light rays from the first light source or the second light source of the reticle illumination structure through the light collecting member and then turning the converged light rays to the center of the reticle through the light folding member, so that the light rays can be guided to the center of the reticle regardless of whether the first light source or the second light source is used, avoiding the phenomenon that one of the light sources deviates from the irradiation, and the components of the reticle illumination structure are arranged in sequence, which maximally shortens the distance between the light source and the reticle, improves the brightness of the reticle, improves the utilization rate of the light source, saves the structural space, reduces the difficulty of assembly and adjustment, and increases the impact resistance.

[0017] In an embodiment, the sighting device further comprises a prism inverter composed of a half-pentaprism and a roof prism, a primary image plane of the sighting device is arranged on a mirror surface of the half-pentaprism, the reticle and the primary image plane are coincident on the mirror surface of the half-pentaprism, and the reticle illumination structure is adhesively connected with the mirror surface.

[0018] In another embodiment, the sighting device further comprises a right-angle prism group with a 45° adhesive surface, the right-angle prism group is provided with a pair of first image plane and second image plane which are conjugate with respect to the 45° adhesive surface, a main optical axis of the sighting device vertically passes through the first image plane, the reticle illumination structure is adhesively connected with the second image plane, and the light rays emitted by the light source group sequentially pass through the light collecting member, the light folding member and the reticle and then meet the main optical axis of the sighting device at the 45° adhesive surface. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings of the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following merely relate to some embodiments of the present application, but not limit the present application.

[0020] Figure 1 (a) and (b) are schematic diagrams of illumination of the existing double light source and reticle;

[0021] Figure 2 is a structural schematic diagram of the reticle illumination structure of an embodiment of the present application;

[0022] Figure 3 is a structural schematic diagram (including a light path schematic diagram) of a split illumination structure with a condenser and a light folding element of one embodiment of the present application;

[0023] Figure 4 is an exploded view (including a light path schematic diagram) of a split illumination structure with another condenser and light folding element of one embodiment of the present application;

[0024] Figure 5 is a light path schematic diagram of a first light source (a second light source) and a second positive lens (a third positive lens) of one embodiment of the present application;

[0025] Figure 6 is a partial structural schematic diagram of a sighting device of one embodiment of the present application;

[0026] Figure 7 is a partial structural schematic diagram of a sighting device of another embodiment of the present application. DETAILED DESCRIPTION

[0027] It should be noted that the terms "first", "second", and the like used in the present application do not indicate any order, number, or importance, but are only used to distinguish different components. The terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", and the like used in the present application only indicate relative positional relationships, which may change accordingly when the absolute positions of the described objects change.

[0028] As introduced in the background section, because there is a certain distance between the two light sources combined side by side, and there is only one split center, the existing dual light source illumination structure and split have problems such as the split brightness cannot meet the sighting requirements or the two light sources cannot both illuminate the split. Therefore, the existing split illumination structure needs to be improved.

[0029] In order to better describe the technical solutions of the present application, the following Figures 2 to 7 Embodiments of the split illumination structure and sighting device provided by the present application are described.

[0030] As Figure 1As shown, one embodiment of the present application provides a split illumination structure with double light sources, which comprises a light source group 11, a light collecting member 12, a light folding member 13 and a split 14 arranged in sequence along the light propagation direction of the split illumination structure. The light source group 11 comprises a first light source 11a and a second light source 11b which are symmetric about the center of the split 14. The light emitted by the first light source 11a or the second light source 11b passes through the light collecting member 12 and the light folding member 13 in sequence and then irradiates the split 14. Specifically, the light covers the entire aiming pattern of the split 14, and the optical axis of the light passes through the center of the split 14. It should be noted that the split 14 refers to a sheet with an aiming pattern or an aiming pattern engraved on glass, and the center of the split 14 coincides with the center of the aiming pattern. The aiming pattern can be a single aiming point, a crosshair or a combination of aiming points and crosshairs, such as the aiming pattern shown in Figure 9 of the invention patent document with the application number CN201610324380.3 and the title Combination Type Split Plate Set for Riflescope, Optical Imaging System for Riflescope and Prism Inverted Image Riflescope. In addition, the first light source 11a and the second light source 11b are symmetric about the center of the split 14, which means that the first light source 11a can coincide with the second light source 11b after being rotated 180° about the center of the split 14.

[0031] Compared with the prior art, the first light source 11a or the second light source 11b of the split illumination structure converges the divergent light after passing through the light collecting member 12 and then folds the converged light to the center of the split 14 after passing through the light folding member 13. Therefore, the light can be guided to the center of the split 14 regardless of whether the first light source 11a or the second light source 11b is used, avoiding the phenomenon that one of the light sources deviates from the irradiation. In addition, the components of the split illumination structure are arranged in sequence, which maximally shortens the distance between the light source and the split, improves the brightness of the split 14, improves the utilization rate of the light source, saves structural space, reduces the difficulty of assembly and adjustment, and increases the impact resistance.

[0032] In the present embodiment, the first light source 11a or the second light source 11b can be a LED lamp bead or a laser. At the same time, the first light source 11a and the second light source 11b are different color light sources, for example, the first light source 11a is a red light source and the second light source 11b is a green light source. The appropriate light source can be selected through a color switching device, for example, the two different color light sources can be switched through the multi-color switching device disclosed in the patent with the patent number ZL201320330495.5 and the title Multi-Color Illumination Riflescope, so as to provide a prominent light source for different aiming background environments. For example, when the background environment is green vegetation, the red light source is switched; when the background environment is yellow or red vegetation, the green light source is switched.

[0033] In another embodiment, the first light source 11a and the second light source 11b are light sources of the same color. When the first light source 11a and the second light source 11b are turned on simultaneously, they can provide brighter illumination for the reticle 14 than a single light source, so as to meet the needs of special occasions.

[0034] like Figure 3 As shown, in this embodiment, the focusing element 12 is a first positive lens 12a, the center of which is collinear with the center of the graticule 14. The refractive element 13 comprises two reflectors 13a with opposing reflective surfaces, which respectively deflect light from the first light source 11a and the second light source 11b toward the center of the graticule 14. A positive lens, also known as a focusing lens, is thick in the middle and thin at the periphery. It typically comes in various shapes, including plano-convex, bi-convex, and concave-convex lenses. In this embodiment, the first positive lens 12a is a plano-convex lens, which can converge scattered light to a focal point. Therefore, by focusing light emitted by the light source toward a single point through the positive lens, most or even all of the light emitted by the light source is fully utilized, further improving the brightness of the graticule and the efficiency of the light source. Therefore, after the light emitted by the first light source 11a or the second light source 11b passes through the first positive lens 12a, the light is not only converged but also deflected. The reflector 13a serving as the refracting element 13 can reflect the deflected light to the center of the division 14, thereby achieving the purpose that the light sources distributed around the center of the division 14 can also illuminate the center of the division 14.

[0035] To facilitate installation of the light source and positive lens, in this embodiment, the first light source 11a, the second light source 11b, and the first positive lens 12a are integrally packaged. This integral packaging of the light source and positive lens forms a module, facilitating modular production and improving assembly efficiency. Furthermore, each light source and positive lens can be accurately positioned using tooling prior to integration, facilitating adjustment of the position and size of the light spot.

[0036] like Figure 4 and Figure 5 As shown, in another embodiment, the focusing element 12 is a second positive lens 12b and a third positive lens 12c corresponding to the first light source 11a and the second light source 11b respectively, and the refractive element 13 is a fourth positive lens 13b, and the center of the fourth positive lens 13b is collinear with the center of the division 14. As mentioned above, the positive lens can converge the scattered light to a focus, so the first light source 11a and the second light source 11b respectively converge the light through the second positive lens 12b and the third positive lens 12c, and then further turn and converge to the center of the division 14 through the fourth positive lens 13b. In this embodiment, the second positive lens 12b, the third positive lens 12c and the fourth positive lens 13b are all plano-convex lenses. It should be noted that,Figure 4 and Figure 5 The light path diagram shown in the exploded view is displayed for more intuitive understanding of the light path of the optical element. Figure 4 and Figure 5 When the parts in the embodiment are arranged in close contact, the technical effects of the embodiment will not be affected due to the unchanged optical principle.

[0037] In order to facilitate the installation of the light source and the positive lens, in the embodiment, the first light source 11a and the second positive lens 12b are integrally packaged, and the second light source 11b and the third positive lens 12c are integrally packaged.

[0038] As shown in Figures 2 to 4 In another embodiment, the divided illumination structure further comprises a diffusion film 15 arranged between the light folding member 13 and the division 14. After passing through the diffusion film 15, the light can become a secondary light source with a larger area, better uniformity, and stable color, which can not only meet the requirement of covering all patterns of the division 14, but also have uniform brightness, thereby improving the comfort of the user of the sighting device.

[0039] The application also provides a sighting device comprising the above-mentioned divided illumination structure. The sighting device provided by the application will be described below through two embodiments.

[0040] Embodiment one

[0041] As shown in Figure 6 The sighting device comprises the above-mentioned divided illumination structure 1 and a prism inverter group 2 composed of a half-pentaprism 21 and a ridge prism (not shown in the figure), a primary image plane of the sighting device is arranged on a mirror reflecting surface M1 of the half-pentaprism 21, the division 14 and the primary image plane coincide on the mirror reflecting surface M1 of the half-pentaprism 21, and the divided illumination structure 1 is adhesively connected (for example, connected by using a light-sensitive adhesive) to the mirror reflecting surface M1. In the embodiment, the division 14 can be a sheet with a sighting pattern engraved thereon, or a sighting pattern engraved on the mirror reflecting surface M1 of the half-pentaprism 21, and a main optical axis L1 of the sighting device intersects with a center of the sighting pattern at the mirror reflecting surface M1.

[0042] Embodiment two

[0043] As shown in Figure 7As shown, the sight includes the above-mentioned reticle illumination structure 1 and a right-angle prism group 3 having a 45° cemented surface 31, the right-angle prism group 3 being provided with a pair of first and second image surfaces M2 and M3 conjugated with respect to the 45° cemented surface 31, the main optical axis L1 of the sight passing through the first image surface M2 perpendicularly, the reticle illumination structure 1 being cemented (for example, using a photosensitive cement) to the second image surface M3, and the light rays emitted by the light source group 11 passing through the light collecting member 12, the light folding member 13 and the reticle 14 in sequence and then intersecting the main optical axis L1 of the sight at the 45° cemented surface 31.

[0044] The above description is only the preferred embodiments of the present application, but the present application is not limited to the above-mentioned embodiments, as long as any same or similar means achieves the technical effects of the present application, it shall belong to the protection scope of the present application.

Claims

1. A split illumination structure with dual light sources, characterized by: The illumination structure comprises a light source group (11), a light collector (12), a light refraction member (13) and a scale (14) arranged in sequence along the direction of light propagation, the light source group (11) comprises two first light sources (11a) and second light sources (11b) which are symmetric about the center of the scale (14), and the light emitted by the first light source (11a) or the second light source (11b) passes through the light collector (12) and the light refraction member (13) in sequence and is incident on the center of the scale (14), the light collector (12) is a first positive lens (12a), the center of the first positive lens (12a) is collinear with the center of the scale (14), and the light refraction member (13) is two mirrors (13a) with opposite reflecting surfaces, the two mirrors (13a) respectively reflect the light emitted by the first light source (11a) and the second light source (11b) to the center of the scale (14).

2. The split illumination structure with dual light sources of claim 1, wherein: The first light source (11a) or the second light source (11b) can alternatively be an LED lamp bead or a laser.

3. The graticule illumination structure with dual light sources according to claim 1, characterized in that: The first light source (11a) and the second light source (11b) are different color light sources.

4. The split illumination structure with dual light sources of claim 1, wherein: The illumination structure further comprises a diffusion film (15) arranged between the light refraction member (13) and the scale (14).

5. A split illumination structure with dual light sources, characterized by: The illumination structure comprises a light source group (11), a light collector (12), a light refraction member (13) and a scale (14) arranged in sequence along the direction of light propagation, the light source group (11) comprises two first light sources (11a) and second light sources (11b) which are symmetric about the center of the scale (14), and the light emitted by the first light source (11a) or the second light source (11b) passes through the light collector (12) and the light refraction member (13) in sequence and is incident on the center of the scale (14), the light collector (12) is a second positive lens (12b) and a third positive lens (12c) corresponding to the first light source (11a) and the second light source (11b) respectively, and the light refraction member (13) is a fourth positive lens (13b), the center of the fourth positive lens (13b) is collinear with the center of the scale (14).

6. A split illumination structure with dual light sources according to claim 5, wherein: The first light source (11a) and the second positive lens (12b) are integrally encapsulated, and the second light source (11b) and the third positive lens (12c) are integrally encapsulated.

7. A sight, characterized by: The illumination structure (1) comprises the illumination structure (1) according to any one of claims 1 to 6.

8. A sight according to claim 7, wherein: The sighting device comprises a prism inverting group (2) composed of a half-pentagonal prism (21) and a roof prism, a primary image plane of the sighting device is arranged on a mirror surface reflecting surface (M1) of the half-pentagonal prism (21), the scale (14) and the primary image plane are coincident on the mirror surface reflecting surface (M1) of the half-pentagonal prism (21), and the illumination structure (1) and the mirror surface reflecting surface (M1) are adhesively connected.

9. A sight according to claim 7, wherein: The sight further comprises a right-angle prism group (3) having a 45° cemented surface (31), the right-angle prism group (3) being provided with a pair of first and second image surfaces (M2, M3) conjugate with respect to the 45° cemented surface (31), the main optical axis (L1) of the sight passing perpendicularly through the first image surface (M2), the reticle illumination structure (1) being cemented to the second image surface (M3), and the light emitted by the light source group (11) passing through the light collecting member (12), the light folding member (13) and the reticle (14) in sequence and then converging with the main optical axis (L1) of the sight at the 45° cemented surface (31).

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