An optical lens with adjustable light intake

Abstract

The utility model discloses an optical lens of adjustable light -admission, including lens body, the one end of lens body is equipped with objective lens, is equipped with second focuser between objective lens and lens body, still include: first light shield, first light shield is located objective lens one side, is equipped with first light -admission hole on first light shield, first light shield one end is fixedly connected with first rotary rod, and first rotary rod other end and second focuser rotatoryly connected, second light shield, second light shield is located between first light shield and objective lens, is equipped with second light -admission hole on second light shield, through setting three kinds of light shield with different diameter light -admission hole, can adjust the light -admission of objective lens through rotating each rotary rod, and light shield can block partial dust to be convenient for adjusting the light -admission of lens, and objective lens is not easy to accumulate too much dust, can promote the imaging quality, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of optical lens technology, and in particular to an optical lens with adjustable light intake. Background Technology

[0002] Optical lenses are important optical devices that use the principles of light refraction and reflection to clearly image external objects onto a photosensitive element. They are widely used in fields such as photography, security monitoring, medical testing, and aerospace. As various industries continue to increase their requirements for optical imaging quality and equipment portability, optical lenses face many challenges in terms of ease of installation, protective performance, adaptability, and ease of maintenance.

[0003] A search revealed a utility model patent in China, CN220509201U, which discloses an optical lens comprising a first lens, a second lens, a third positive lens, a fourth positive lens, a fifth lens, a sixth lens, a seventh lens, an IR filter, and an image plane IMA arranged sequentially along the optical axis from left to right incident direction. The first lens has negative optical power, with a convex object-side surface and a concave image-side surface; the second lens has negative optical power, with a concave object-side surface and a convex image-side surface; the fifth lens has positive optical power, with a convex object-side surface and a convex image-side surface; the sixth lens has negative optical power, with a concave object-side surface and a convex image-side surface; and the seventh lens has positive optical power, with a convex object-side surface and a concave image-side surface. This utility model employs seven glass spherical lenses, which are easy to process, low in cost, and achieve high resolution while maintaining a large aperture of f / 1.4. The increased light intake facilitates observation of the surroundings in low-light environments, making it suitable for automotive side-view systems and autonomous driving applications.

[0004] A search revealed that Chinese Patent Publication No. CN120335219A discloses an optical lens belonging to the field of optical lens technology. The invention includes a camera, with a lens mount attached to the outer wall of the camera. The outer wall of the lens mount is fixedly connected to uniformly distributed clamping plates. The clamping plates are connected to an adapter ring via clamping blocks. The adapter ring is connected to an optical lens body via a temperature drift adaptive calibration component. The outer wall of the lens mount has uniformly distributed sliding grooves. The invention also includes a retractable protective component, comprising a fixed shield, a transmission shield, and an extension shield disposed on the outer wall of the adapter ring. The fixed shield is threadedly connected to the adapter ring. In this invention, the multi-stage telescopic structure of the retractable protective component, combined with the flexible positioning of the positioning ball and positioning hole in the positioning component, allows the optical lens to adapt to lenses of different lengths, improving the product's versatility and applicability, reducing equipment procurement costs, and facilitating equipment carrying and management.

[0005] However, in existing technologies, it is not convenient to adjust the amount of light entering the lens, and too much dust easily accumulates on the objective lens, thereby reducing image quality and making it impractical.

[0006] To address this issue, we propose an optical lens with adjustable light intake. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing an optical lens with adjustable light intake.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: An adjustable light-gathering optical lens includes a lens body, an objective lens at one end of the lens body, a second focusing mechanism between the objective lens and the lens body, and further includes: A first light shield is disposed on one side of the objective lens. The first light shield has a first light inlet hole. A first rotating rod is fixedly connected to one end of the first light shield, and the other end of the first rotating rod is rotatably connected to the second focusing device. The second light shield is disposed between the first light shield and the objective lens. The second light shield is provided with a second light inlet hole. One end of the second light shield is fixedly connected to a second rotating rod, and the other end of the second rotating rod is rotatably connected to the second focusing device. The third light shield is disposed between the second light shield and the objective lens. The third light shield has a third light inlet hole. One end of the third light shield is fixedly connected to the upper rotating rod, and the other end of the second rotating rod is rotatably connected to the second focusing device.

[0009] More preferably, the second focusing device is rotatably connected to the lens body, the second focusing device is rotatably connected to the objective lens, and the second focusing device is provided with threads.

[0010] More preferably, an eyepiece is provided at the end of the lens body opposite to the objective lens, and a first focusing device is provided between the eyepiece and the lens body.

[0011] More preferably, the first focusing device is rotatably connected to the lens body, the first focusing device is rotatably connected to the eyepiece, and the first focusing device is provided with threads.

[0012] More preferably, the first light-inlet hole, the second light-inlet hole, and the third light-inlet hole are all circular, with the diameter of the first light-inlet hole being smaller than the diameter of the second light-inlet hole, and the diameter of the second light-inlet hole being smaller than the diameter of the third light-inlet hole.

[0013] More preferably, the objective lens, the first light shield, the second light shield, and the third light shield are all cylindrical in shape, and the cross-sectional diameters of the objective lens, the first light shield, the second light shield, and the third light shield are the same.

[0014] More preferably, the objective lens and the third light shield are bonded together, the third light shield and the second light shield are bonded together, and the second light shield and the first light shield are bonded together.

[0015] More preferably, the lens body is provided with a plurality of lenses, and the plurality of lenses are one or more combinations of concave lenses, convex lenses, IR filters and image plane IMA.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up three types of lens hoods with light-entry holes of different diameters, the amount of light entering the objective lens can be adjusted by rotating each rotating rod. The lens hoods can also block some dust, thus making it easy to adjust the amount of light entering the lens. In addition, the objective lens is less likely to accumulate too much dust, which can improve image quality and make it highly practical. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of an optical lens with adjustable light intake proposed in this utility model; Figure 2 This utility model proposes a side-view structure for an optical lens with adjustable light intake. Figure 3 The present invention provides a tilting structure for an optical lens with adjustable light intake. Figure 4 yes Figure 1 Schematic diagram of the cross-sectional structure of the lens body.

[0018] In the diagram: 1. Lens body; 2. Eyepiece; 3. First focuser; 4. Objective lens; 5. Second focuser; 6. First lens hood; 7. First rotating rod; 8. First light entrance; 9. Second lens hood; 10. Second rotating rod; 11. Second light entrance; 12. Third lens hood; 13. Third rotating rod; 14. Third light entrance; 15. Lens element. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] refer to Figure 1An optical lens with adjustable light intake, wherein the lens body 1 refers to the optical component used by a movie camera or projector to generate images, and one end of the lens body 1 is provided with an objective lens 4, which is an optical imaging device composed of a lens group, mainly used to image objects onto photosensitive film or other receivers, and a second focusing device 5 is provided between the objective lens 4 and the lens body 1, which is mainly used to adjust the distance between the objective lens 4 and the photosensitive element to ensure clear imaging.

[0021] refer to Figure 1 The first light shield 6 is located on one side of the objective lens 4. The first light shield 6 is used to block external light. The first light shield 6 is provided with a first light inlet hole 8. External light enters the second light inlet hole 11 through the first light inlet hole 8. One end of the first light shield 6 is fixedly connected to a first rotating rod 7. The other end of the first rotating rod 7 is rotatably connected to the second focusing device 5. When the required light intake is small, the first light shield 6 can be lowered and rotated by the first rotating rod 7. At this time, the first light shield 6 coincides with the horizontal plane of the second light shield 9, the third light shield 12 and the objective lens 4.

[0022] refer to Figure 2 The second light shield 9 is located between the first light shield 6 and the objective lens 4. The second light shield 9 is used to block external light. The second light shield 9 is provided with a second light inlet hole 11. The light entering through the first light inlet hole 8 enters the third light inlet hole 14 through the second light inlet hole 11. One end of the second light shield 9 is fixedly connected to a second rotating rod 10. The other end of the second rotating rod 10 is rotatably connected to the second focusing device 5. When the required light intake is moderate, the first light shield 6 can be opened, and then the second light shield 9 can be lowered. The second rotating rod 10 can be rotated to make the second light shield 9 coincide with the horizontal plane of the third light shield 12 and the objective lens 4.

[0023] refer to Figure 3 The third light shield 12 is located between the second light shield 9 and the objective lens 4. The third light shield 12 is used to block external light. The third light shield 12 is provided with a third light inlet hole 14. The light entering through the second light inlet hole 11 enters the objective lens 4 through the third light inlet hole 14. One end of the third light shield 12 is fixedly connected to the first rotating rod 10, and the other end of the second rotating rod 10 is rotatably connected to the second focusing device 5. When a large amount of light is required, the first light shield 6 and the second light shield 9 can be opened, and the third rotating rod 13 can be rotated to make the third light shield 12 coincide with the horizontal plane of the objective lens 4.

[0024] refer to Figures 1-3 By setting three types of light hoods with different diameter light-entry holes, the amount of light entering the objective lens 4 can be adjusted by rotating each rotating rod. The light hoods can also block some dust, thus making it easy to adjust the amount of light entering the lens. Furthermore, the objective lens 4 is less prone to accumulating too much dust, which can improve image quality and make it highly practical.

[0025] refer to Figure 1 The second focusing device 5 is rotatably connected to the lens body 1, and the second focusing device 5 is rotatably connected to the objective lens 4. The distance between the objective lens 4 and the photosensitive element is adjusted by rotating the second focusing device 5 to ensure clear imaging. The second focusing device 5 is provided with threads, which can increase the friction between the user's fingers and the contact surface of the second focusing device 5, making it easier to rotate the second focusing device 5.

[0026] refer to Figure 1 The lens body 1 has an eyepiece 2 at the end opposite to the objective lens 4. The eyepiece 2 is a visual optical device used to observe the image formed by the optical system in front. It is a component of visual optical elements such as cameras, telescopes, and microscopes. A first focusing device 3 is provided between the eyepiece 2 and the lens body 1. The first focusing device 3 is mainly used to adjust the distance between the eyepiece 2 and the photosensitive element to ensure clear imaging.

[0027] refer to Figure 1 The first focusing device 3 is rotatably connected to the lens body 1, and the first focusing device 3 is rotatably connected to the eyepiece 2. The distance between the eyepiece 2 and the photosensitive element is adjusted by rotating the first focusing device 3 to ensure clear imaging. The first focusing device 3 is provided with threads, which can increase the friction between the user's fingers and the contact surface of the first focusing device 3, making it easier to rotate the first focusing device 3.

[0028] refer to Figure 1-3 The first light-entry hole 8, the second light-entry hole 11, and the third light-entry hole 14 are all circular. The circular shape allows for a wider light-entry angle. The diameter of the first light-entry hole 8 is smaller than the diameter of the second light-entry hole 11, and the diameter of the second light-entry hole 11 is smaller than the diameter of the third light-entry hole 14. Thus, the amount of light entering the objective lens 4 can be adjusted by raising the first light-blocking cover 6, the second light-blocking cover 9, and the third light-blocking cover 12.

[0029] refer to Figures 1-3 The objective lens 4, the first lens hood 6, the second lens hood 9, and the third lens hood 12 are all cylindrical in shape. The cylindrical shape can accommodate most of the lens body 1, making it highly practical. The objective lens 4, the first lens hood 6, the second lens hood 9, and the third lens hood 12 have the same cross-sectional diameter, which facilitates the storage of the lens.

[0030] refer to Figures 1-3 Objective lens 4 and third light shield 12 are bonded together, third light shield 12 and second light shield 9 are bonded together, and second light shield 9 and first light shield 6 are bonded together. Thus, there are no gaps at the connection between objective lens 4, first light shield 6, second light shield 9 and third light shield 12, which can prevent light leakage and improve the light shielding performance of first light shield 6, second light shield 9 and third light shield 12.

[0031] refer to Figure 4The lens body 1 contains multiple lenses 15, which are one or more combinations of concave lenses 15, convex lenses 15, IR filters, and image plane IMA. Patent publication number CN220509201U states: "It includes a first lens, a second lens, a third positive lens, a fourth positive lens, a fifth lens, a sixth lens, a seventh lens, an IR filter, and an image plane IMA arranged sequentially along the optical axis from left to right incident direction; the first lens has negative optical power, its object side is convex, and its image side is concave; the second lens..." The first lens has negative optical power, with its object side being concave and its image side being convex; the second lens has positive optical power, with its object side being convex and its image side being convex; the third lens has negative optical power, with its object side being concave and its image side being convex; the fourth lens has positive optical power, with its object side being convex and its image side being concave; the aperture of the optical lens = f / ENPD = 1.4, where ENPD is the effective aperture diameter of the optical lens and f is the total focal length value of the optical lens. The use of lens 15 is prior art and will not be elaborated further here.

[0032] Furthermore, when the terms "first," "second," "third," etc., are used in this application specification to describe various features, these terms are only used to distinguish these features and should not be construed as indicating or implying the correlation or relative importance between features or implicitly indicating the number of features indicated.

[0033] In addition, this application specification describes exemplary embodiments by referring to idealized exemplary cross-sectional views and / or plan views and / or perspective views. Therefore, differences from the illustrated shapes are foreseeable due to factors such as manufacturing techniques and / or tolerances. Therefore, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but should include deviations in shape caused, for example, by manufacturing processes. Thus, the regions shown in the figures are substantially schematic, and their shapes are not intended to illustrate the actual shapes of the regions of the device, nor to limit the scope of the exemplary embodiments.

Claims

1. An optical lens with adjustable light intake, comprising a lens body (1), an objective lens (4) at one end of the lens body (1), and a second focusing mechanism (5) between the objective lens (4) and the lens body (1), characterized in that, Also includes: The first light shield (6) is located on one side of the objective lens (4). The first light shield (6) is provided with a first light inlet hole (8). One end of the first light shield (6) is fixedly connected to a first rotating rod (7), and the other end of the first rotating rod (7) is rotatably connected to the second focusing device (5). The second light shield (9) is located between the first light shield (6) and the objective lens (4). The second light shield (9) is provided with a second light inlet hole (11). One end of the second light shield (9) is fixedly connected to a second rotating rod (10), and the other end of the second rotating rod (10) is rotatably connected to the second focusing device (5). The third light shield (12) is located between the second light shield (9) and the objective lens (4). The third light shield (12) is provided with a third light inlet hole (14). One end of the third light shield (12) is fixedly connected to an upper rotating rod, and the other end of the second rotating rod (10) is rotatably connected to the second focusing device (5).

2. The optical lens with adjustable light intake according to claim 1, characterized in that, The second focusing device (5) is rotatably connected to the lens body (1), and the second focusing device (5) is rotatably connected to the objective lens (4). The second focusing device (5) is provided with threads.

3. The optical lens with adjustable light intake according to claim 1, characterized in that, The lens body (1) has an eyepiece (2) at the end opposite to the objective lens (4), and a first focuser (3) is provided between the eyepiece (2) and the lens body (1).

4. An optical lens with adjustable light intake according to claim 3, characterized in that, The first focusing device (3) and the lens body (1) are rotatably connected, the first focusing device (3) and the eyepiece (2) are rotatably connected, and the first focusing device (3) is provided with threads.

5. An optical lens with adjustable light intake according to claim 1, characterized in that, The first light inlet (8), the second light inlet (11) and the third light inlet (14) are all circular. The diameter of the first light inlet (8) is smaller than the diameter of the second light inlet (11), and the diameter of the second light inlet (11) is smaller than the diameter of the third light inlet (14).

6. An optical lens with adjustable light intake according to claim 1, characterized in that, The objective lens (4), the first light shield (6), the second light shield (9) and the third light shield (12) are all cylindrical in shape, and the cross-sectional diameters of the objective lens (4), the first light shield (6), the second light shield (9) and the third light shield (12) are the same.

7. An optical lens with adjustable light intake according to claim 1, characterized in that, The objective lens (4) is attached to the third light shield (12), the third light shield (12) is attached to the second light shield (9), and the second light shield (9) is attached to the first light shield (6).

8. An optical lens with adjustable light intake according to claim 1, characterized in that, The lens body (1) is provided with a plurality of lenses (15), and the plurality of lenses (15) are one or more of the following: concave lens (15), convex lens (15), IR filter and image plane IMA.

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