Sighting telescope
By designing optical waveguide lenses and collimating lens assemblies, and combining them with an adjustment mechanism, the problems of chromatic aberration and parallax in existing sights have been solved, resulting in a sight with high transmittance and low energy consumption, expanding its application scenarios and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUPERIOR LENS CO LTD
- Filing Date
- 2026-03-11
- Publication Date
- 2026-04-17
AI Technical Summary
Existing reflex and holographic sights suffer from problems such as chromatic aberration, parallax, complex optical paths, and high production costs, which affect aiming accuracy and the scope of use.
By employing optical waveguide lenses and collimating lens assemblies, combined with azimuth adjustment and two-way adjustment mechanisms, aiming with no color distortion and no parallax can be achieved, reducing production costs and simplifying the optical path system.
It achieves aiming without color distortion or parallax, improves light transmittance and light energy utilization, extends battery life, reduces energy consumption, simplifies the size and production cost of the scope, and expands its application scenarios.
Smart Images
Figure CN224136476U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical instrument technology, specifically to a sight. Background Technology
[0002] A sight is a commonly used optical aiming device, mainly divided into reflex sights (red dot sights), holographic sights, and telescopic optical sights. Among them, reflex sights and holographic sights are mainly used for aiming at medium and close ranges.
[0003] Existing reflex sights use parabolic reflectors as reflectors. To maximize the transmission of the ambient field of view through the reflector into the user's eye, while simultaneously projecting red or green reticle patterns, the reflector needs to be coated with a layer that selectively transmits or reflects specific wavelengths of light. For example, in commonly used reflex red dot sights, an anti-reflective coating is applied to the reflector to increase the reflectivity of red light. This results in some colors of light in the environment not reaching the user's eye, causing color distortion in the user's view through the sight. In low-light environments, this can lead to insufficient brightness and affect usability. Furthermore, reflectors are typically single-layer lenses and cannot correct aberrations. Therefore, parallax at the aiming point increases significantly when slightly off-center, affecting aiming accuracy. While holographic sights can solve the parallax problem, their optical paths are complex, resulting in larger size and weight. Additionally, the manufacturing of holograms is complex and has a low yield rate, leading to high manufacturing costs and limiting the product's applicability. Some theoretical studies of holographic sights employ optical waveguides as the light transmission path, transmitting reference light used to reconstruct the hologram to the hologram itself, thus reproducing the aiming point or crosshairs and other reticle information in the hologram. While this approach reduces optical path complexity to some extent, it still requires the use of holograms that are complex to manufacture, have low yield rates, and are costly, since the reticle information is fixed within the hologram. Therefore, a new sight was designed to overcome these problems. Utility Model Content
[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a scope that can achieve chromatic aberration-free and parallax-free aiming with low cost and small size, has high light transmittance, high light energy utilization, can extend battery life, facilitates zeroing of the scope, and eliminates tilt caused by the precision of parts processing or installation.
[0005] To solve the above problems, the technical solution adopted by this utility model is as follows: A sight includes an optical waveguide lens, a collimating lens assembly, and a light source. The optical waveguide lens has an insertion region and an exit region. The collimating lens assembly is disposed between the light source and the insertion region. The collimating lens assembly is used to convert the light emitted from the light source into a collimated beam. The insertion region is used to receive the collimated beam and change its direction so that the collimated beam can be transmitted along the optical waveguide lens to the exit region by total internal reflection. The exit region is used to receive the collimated beam transmitted through the optical waveguide lens and, for a second time... The direction of the collimated beam is changed to reflect it to the human eye. Both the collimating lens assembly and the light source are mounted on the azimuth adjustment mechanism. The azimuth adjustment mechanism is used to adjust the coupling angle of the collimating lens assembly to the optical waveguide lens, thereby adjusting the aiming point and achieving zeroing of the gun. The light source is mounted on the azimuth adjustment mechanism through a two-way adjustment mechanism. The two-way adjustment mechanism can adjust the axial position of the light source relative to the collimating lens assembly to obtain the best collimation effect, and can also adjust the light source to move circumferentially around the optical axis of the collimating lens assembly to eliminate tilting caused by part precision during production and assembly.
[0006] Compared to existing technologies, the advantages of this invention are as follows: In this sight, light source information, such as reticle patterns and auxiliary information, is collimated by the collimating lens assembly and then enters the coupling area of the optical waveguide lens. It is transmitted within the optical waveguide lens via total internal reflection and then enters the user's eye through the coupling area of the optical waveguide lens. Simultaneously, the position of the light source relative to the collimating lens assembly can be adjusted via a two-way adjustment mechanism, making the collimated light nearly parallel. This allows the virtual image of the reticle pattern formed in the user's eye to be approximately projected at infinity, thereby reducing or even eliminating aiming parallax. The sight also allows adjustment of the coupling angle of the collimated light entering the optical waveguide lens via an azimuth adjustment mechanism, facilitating the adjustment of the aiming point and enabling users to zero the weapon. Furthermore, this sight does not require the use of holograms, reducing manufacturing costs. It also eliminates the need for a selectively reflective coating on the lens, preventing color distortion. Compared to the coated mirrors and diffractive waveguides of traditional reflective sights, optical waveguide lenses transmit collimated light through total internal reflection along a geometric path, resulting in higher light transmittance and energy utilization. This expands application scenarios in low-light environments, meets the needs of all-weather, multi-scenario use, significantly reduces energy consumption of the light source, and extends battery life. The optical path system is also simpler, allowing for smaller product sizes and broader application scenarios.
[0007] In the aforementioned sight, the light source is a single-point light source, or a patterned surface light source capable of projecting light in the form of a reticle and / or auxiliary information.
[0008] In the aforementioned aiming scope, the light source is a matrix display screen capable of projecting light in the form of reticle patterns and / or auxiliary information.
[0009] The aforementioned aiming scope, wherein the coupling region includes at least one reflector disposed within the optical waveguide lens.
[0010] The aforementioned aiming scope, wherein the coupling region includes at least one prism, the prism being disposed at the end of the optical waveguide lens near the light source.
[0011] The aforementioned aiming scope, wherein the coupling region includes a partial reflector array composed of multiple parallel arrays of partial reflectors arranged on the optical waveguide lens.
[0012] In the aforementioned aiming scope, there is an acute angle between the optical waveguide lens and the optical axis of the collimating lens assembly.
[0013] In the aforementioned aiming scope, the exit pupil diameter of the collimating lens assembly is equal to the effective field of view width of the optical waveguide lens.
[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the aiming scope according to the first embodiment of the present invention.
[0016] Figure 2 This is a schematic diagram of the aiming scope according to the second embodiment of the present invention.
[0017] Figure 3 This is a schematic diagram of the aiming scope according to the third embodiment of the present invention.
[0018] Figure 4 This is a schematic diagram of the aiming scope according to the fourth embodiment of the present invention.
[0019] Figure 5 This is a schematic diagram of the aiming scope according to the fifth embodiment of the present invention.
[0020] Explanation of icon numbers:
[0021] 100 Optical waveguide lens, 110 Coupled-in region, 111 Reflector, 112 Prism, 120 Coupled-out region, 121 Partial reflector, 200 Collimating lens assembly, 210 Azimuth adjustment mechanism, 300 Light source, 310 Two-way adjustment mechanism, 400 Virtual image. Detailed Implementation
[0022] The embodiments of this utility model are described in detail below, with reference to Figure 1This invention provides a sight, including a waveguide lens 100, a collimating lens assembly 200, and a light source 300. The waveguide lens 100 has an insertion region 110 and an exit region 120. The collimating lens assembly 200 is disposed between the light source 300 and the insertion region 110 of the waveguide lens 100. The collimating lens converts the light emitted from the light source 300 into a collimated beam. The insertion region 110 receives the collimated beam and changes its direction, allowing it to be transmitted along the waveguide lens 100 to the exit region 120 via total internal reflection. The exit region 120 receives the collimated beam transmitted through the waveguide lens 100 and changes its direction a second time, reflecting it to the user's eye, thereby presenting the virtual image 400 of the reticle pattern generated by the light source 300 to the user's eye. Both the collimating lens assembly 200 and the light source 300 are mounted on the azimuth adjustment mechanism 210. The azimuth adjustment mechanism 210 is used to adjust the coupling angle of the collimated light generated by the collimating lens assembly 200 to the optical waveguide lens 100, thereby adjusting the direction of the reticle pattern or auxiliary information generated by the light source 300 to adjust the direction of the aiming point, allowing the user to zero the gun. The light source 300 is mounted on the azimuth adjustment mechanism 210 via a two-way adjustment mechanism 310. The two-way adjustment mechanism 310 can adjust the axial distance of the light source 300 relative to the collimating lens assembly 200 along the optical axis of the collimating lens assembly 200 to obtain the best collimation effect, so that the collimated beam is approximately parallel, thereby making the position of the virtual image 400 presented in the human eye close to infinity, thus avoiding parallax and improving aiming accuracy. At the same time, it can adjust the circumferential movement of the light source 300 around the optical axis of the collimating lens assembly 200 to adjust the angular position of the light source 300 relative to the collimating lens assembly 200, so as to eliminate the tilt caused by part precision during the production and assembly process.
[0023] In this sight, the light generated by the light source 300 is converted into collimated light by the collimating lens assembly 200. The collimated light emitted from the collimating lens assembly 200 is coupled into the optical waveguide lens 100 along a basic geometric path, transmitted by total internal reflection along the geometric path, and coupled out along the geometric path. Compared with diffractive optical waveguides, this improves the light energy utilization of the light source 300, and can obtain higher brightness of the observed image under the same brightness of the light source 300, meeting the needs of all-weather and multi-scene use, greatly reducing the energy consumption of the light source 300, extending the battery life, and at the same time eliminating the need to coat the optical waveguide lens 100 with a film layer that selectively reflects special wavelengths, thus avoiding color distortion or reduced light transmittance of ambient light. The reticle pattern is directly generated by the light source 300 and transmitted and reflected to the user's eye through the waveguide lens 100. This eliminates the need for holograms, reducing manufacturing costs and simplifying the optical path. The position of the reticle pattern or auxiliary information generated by the light source 300 can be adjusted by directly changing the coupling angle of the collimating lens assembly 200 relative to the waveguide lens 100, thereby adjusting the front sight and achieving zero-point calibration of the firearm. This makes scope adjustment easier. Furthermore, it allows for a smaller overall scope size, meeting the needs of all-weather operation and expanding its application scenarios.
[0024] Understandably, referring to Figure 1 and Figure 2 The coupling region 110 of the optical waveguide lens 100 can change the direction of light emitted from the light source 300 by means of at least one reflector 111 embedded within the optical waveguide lens 100, or by means of at least one prism 112 disposed at the lower end of the optical waveguide lens 100. The angles of the reflectors 111 and prisms 112 within the optical waveguide lens 100 need to be set according to the parameters of the optical waveguide lens 100 and connected with the exit pupil of the collimating lens assembly 200, so that the light entering through the coupling region 110 can satisfy the total internal reflection condition at the mirror surface of the optical waveguide lens 100. The refractive index and size parameters of the optical waveguide lens 100 need to satisfy the total internal reflection condition and the optical path relationship for transmitting light to the coupling region 120.
[0025] It is understood that the optical waveguide lens 100 is a one-dimensional geometric array optical waveguide lens. The coupling region 120 of the optical waveguide lens 100 is composed of multiple partially reflecting mirrors 121 stacked in parallel. The partially reflecting mirrors 121 form a specific angle with the surface of the optical waveguide lens 100 to achieve longitudinal pupil expansion of the light source information. Combined with the collimating lens assembly 200 for lateral pupil expansion of the light source information, the coupling region 120 of the optical waveguide lens 100 can obtain a virtual image of the light source information with accurate proportions and a size conforming to the specified dimensions. (Refer to...) Figure 2In this embodiment, the coupling region 120 is composed of a partial reflector array. The reflective surface of the partial reflector 121 is at a specific angle to the light transmitted within the waveguide, causing the light reaching each partial reflector 121 to be reflected and transmitted according to different reflection-transmission ratios. The reflected light leaves the optical waveguide lens 100 and enters the user's eye, forming an exit pupil. The exit pupil contains information such as the complete reticle pattern of the light source 300. Unreflected light passes through the partial reflector 121 and continues to propagate forward, repeating the reflection-transmission process upon encountering the next partial reflector 121, until the last partial reflector 121 in the array reflects all the light into the user's eye. Each partial reflector 121 forms an exit pupil. Assuming there are n partial reflectors 121 in the array, n exit pupils will be replicated, allowing the user to see the complete image information of the light source 300 whenever their eyes move along the array direction, thus creating a pupil-expanding effect. Because light propagates through total internal reflection within the waveguide lens, light energy does not leak outside the waveguide, reducing the leakage energy ratio to below 2%. This reduces the light leakage of the scope, thereby decreasing the probability of detection by the enemy and improving light energy utilization, which can significantly reduce the energy consumption of the light source and extend battery life.
[0026] It is understandable that the light source 300 and the collimating lens assembly 200 can be positioned on the side of the optical waveguide lens 100 closer to the user, or on the side of the optical waveguide lens 100 away from the user, such as... Figure 1 and Figure 3 As shown. In some embodiments, the light source 300 can be a single point light source, or a patterned surface light source or matrix display screen that can project light in the form of a reticle pattern and / or auxiliary information to project a virtual image of a reticle pattern or auxiliary information in the shape of a crosshair or the like at infinity or a specific distance in front of the user, as a aiming sight or prompting auxiliary information.
[0027] It is understood that the azimuth adjustment mechanism 210 can be an angle adjustment mechanism composed of a universal joint or ball joint, etc. In this embodiment, the azimuth adjustment mechanism 210 includes a first adjustment platform and a second adjustment platform. The first adjustment platform is rotatably connected to the main structure of the scope via a pivot or hinge, and can rotate relative to the main structure of the scope in a first direction, such as the pitch direction. The second adjustment platform is rotatably connected to the first adjustment platform via a hinge or rotational connection, and can rotate relative to the first adjustment platform in a second direction, such as the horizontal left-right direction. A lead screw adjustment mechanism is provided between the first adjustment platform and / or the second adjustment platform and the scope body to facilitate precise adjustment of the insertion angle of the straight line of sight by the user. When the light source 300 is a matrix display screen, since the matrix display screen is composed of an array of light-emitting pixels, the matrix display screen uses a microprocessor to control the corresponding pixels in the array to light up and form the required reticle pattern. Signals can be sent to the microprocessor of the matrix display screen via buttons to adjust the address of the illuminated pixels, thereby adjusting the display position of the reticle pattern on the matrix display screen. This changes the display position of the reticle pattern on the matrix display screen. Through the collimating lens assembly 200, the direction of the virtual image of the reticle pattern can be changed, achieving zero-point calibration of the firearm. Therefore, when the light source 300 is a matrix display screen, the function of adjusting the display position of the reticle pattern on the matrix display screen can be regarded as an orientation adjustment mechanism 210. Thus, there is no need to actually set up an orientation adjustment mechanism 210, and the matrix display screen can be fixed inside the scope, further simplifying the size of the scope.
[0028] It is understood that the two-way adjustment mechanism 310 can be composed of a linear adjustment mechanism such as a lead screw and an angle adjustment mechanism. In this embodiment, the two-way adjustment mechanism 310 includes a lead screw, which is arranged parallel to the optical axis of the collimating lens assembly 200. The mounting base of the light source 300 is hinged to the slider of the lead screw, and the direction of the hinge axis is also parallel to the optical axis, thereby allowing the light source 300 to swing slightly around the axial direction of the optical axis. The slider of the lead screw is provided with a limiting structure for limiting the maximum swing range of the mounting base of the light source 300, and is provided with a set screw that abuts against the side of the mounting base to achieve high-precision adjustment of the rotation angle. It is understood that the specific structures of the orientation adjustment mechanism 210 and the two-way adjustment mechanism 310 are common knowledge to those skilled in the art and will not be described in detail here.
[0029] Reference Figure 4 and Figure 5In some embodiments, to improve the concealment of the scope and reduce the probability of the user being detected by the enemy, there is an acute angle between the optical waveguide lens 100 and the optical axis of the collimating lens assembly 200. That is, the optical waveguide lens 100 is tilted backward at an acute angle 'a' or forward at an acute angle 'b' relative to a plane perpendicular to the axis of the gun barrel. By tilting the optical waveguide lens 100, when the enemy uses optical search equipment to search for our tracks, the reflected signal after illuminating our scope will deviate from the transmission direction and cannot return to the transceiver, thereby reducing the risk of our being detected by the enemy.
[0030] It should be noted that in the description of this utility model, any descriptions of orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of this utility model.
[0031] In the description of this utility model, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is mentioned, it is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0033] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A riflescope comprising an optical waveguide optic (100), a collimating lens assembly (200), and a light source (300), characterized in that, The optical waveguide lens (100) has an insertion region (110) and an exit region (120). The collimating lens assembly (200) is disposed between the light source (300) and the insertion region (110). The collimating lens assembly (200) is used to convert the light emitted from the light source (300) into a collimated beam. The insertion region (110) is used to receive the collimated beam and change its direction so that the collimated beam can be transmitted along the optical waveguide lens (100) to the exit region (120) by total internal reflection. The exit region (120) is used to receive the collimated beam transmitted through the optical waveguide lens (100) and change its direction a second time to reflect the collimated beam to the human eye. The collimating lens assembly (200) and the light source (300) are both mounted on the orientation adjustment mechanism (210). The orientation adjustment mechanism (210) is used to adjust the coupling angle of the collimating lens assembly (200) with respect to the optical waveguide lens (100) to adjust the aiming point and achieve zeroing of the gun. The light source (300) is mounted on the orientation adjustment mechanism (210) through a two-way adjustment mechanism (310). The two-way adjustment mechanism (310) can adjust the axial position of the light source (300) relative to the collimating lens assembly (200) to obtain the best collimation effect. At the same time, it can adjust the light source (300) to move circumferentially around the optical axis of the collimating lens assembly (200) to eliminate the tilt caused by the precision of the parts during the production and assembly process.
2. The riflescope of claim 1, wherein, The light source (300) is a single-point light source, or a patterned surface light source that can emit light in the form of a reticle pattern and / or auxiliary information.
3. The riflescope of claim 1, wherein, The light source (300) is a matrix display screen that emits light in the form of a reticle pattern and / or auxiliary information.
4. The riflescope of claim 1, wherein, The coupling region (110) includes at least one reflector (111) disposed within the optical waveguide lens (100).
5. The riflescope of claim 1, wherein, The coupling region (110) includes at least one prism (112) disposed at one end of the optical waveguide lens (100) near the light source (300).
6. The riflescope of claim 1, wherein, The coupling region (120) includes a partial mirror array consisting of multiple parallel arrays of partial mirrors (121) arranged on the optical waveguide lens (100).
7. The riflescope of claim 1, wherein, There is an acute angle between the optical waveguide lens (100) and the optical axis of the collimating lens assembly (200).
8. The riflescope of claim 1, wherein, The exit pupil diameter of the collimating lens assembly (200) is equal to the effective field of view width of the optical waveguide lens (100).