Lens group with soft astigmatism

Abstract

The utility model relates to the technical field of lens assemblies, in particular to a lens group with soft astigmatism, which comprises a lens shell, the right side of the lens shell is in bolted connection with a light source, the left side of the lens shell is provided and connected with a connecting mechanism, the connecting mechanism comprises an adjusting ring, the adjusting ring is rotatably connected to the outer wall of the lens shell, and the adjusting ring is connected with the light source. Clamping blocks are symmetrically distributed on the inner wall of the adjusting ring, a light scattering mechanism is arranged between the connecting mechanism and the light source, and the light scattering mechanism is rotationally connected to the inner wall of the lens shell. According to the utility model, through the mutual cooperation of the internal parts of the connecting mechanism, the installation position of the convex lens on the inner wall of the lens shell can be telescopically adjusted, so that the convex lens can carry out secondary scattering or focusing on the scattered light source, thereby improving the lens group to meet different use requirements, and through the mutual cooperation of the internal parts of the light scattering mechanism, the light scattering efficiency is improved. And the light scattering operation of the light source can be completed.

Description

Technical Field

[0001] This utility model relates to the field of lens assembly technology, specifically to a lens assembly with soft astigmatism. Background Technology

[0002] A lens is an optical element made of transparent materials (such as glass, crystal, etc.). Convex lenses are thicker in the middle and thinner at the edges, and come in three types: biconvex, plano-convex, and concave-convex. Concave lenses are thinner in the middle and thicker at the edges, and come in three types: biconcave, plano-concave, and convex-concave. Lenses play an important role in fields such as astronomy, military, transportation, medicine, and art. A lens assembly is a device that can be installed and used in conjunction with a lens housing, lens holder, and LED light head.

[0003] A search revealed a utility model patent with publication number CN219623895U, which discloses a lens assembly for softening light diffusion. This lens assembly aims to solve the technical problem that the light emitted from LED lamp heads in existing technologies is too strong, which can easily cause eye damage when the light passes through the lens. The lens assembly includes a lens housing, a lens frame, an LED lamp head, and a first lens. The lens frame is connected to the inner wall of the lens housing, the LED lamp head is located at one end of the lens housing, the first lens is connected to the inner wall of the lens housing, and a second lens is located at the other end of the lens housing. Both the second and first lenses have raised strips on their surfaces, and an adjustment mechanism is provided between the lens housing and the second lens. When the drive motor is running, it can rotate the second lens via a gear disk and gear ring. When the second lens rotates 90°, the raised strips on the surface of the second lens are perpendicular to the raised strips on the surface of the first lens, thus diffusing the irradiated light through the raised strips on the surfaces of the second and first lenses.

[0004] Although the above-mentioned patent states that after the second lens is rotated 90°, the convex strips on the surface of the second lens are perpendicular to the convex strips on the surface of the first lens, which can scatter the irradiated light through the convex strips on the surfaces of the second and first lenses, the installation distance between the first and second lenses cannot be adjusted. As a result, although the lens assembly can scatter the irradiated light, it cannot meet the needs for different levels of light softness during use.

[0005] Therefore, it is necessary to propose a lens group with soft astigmatism to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a lens assembly with softer astigmatism. Through the cooperation of the internal parts of the connecting mechanism, the extension and retraction adjustment of the convex lens's mounting position on the inner wall of the lens housing can be completed, allowing the convex lens to perform secondary scattering or focusing of the scattered light source. This improves the lens assembly's ability to meet different usage requirements and solves the problem in the prior art where the mounting distance between the first and second lenses cannot be adjusted, resulting in the lens assembly being able to scatter the irradiated light but failing to meet the different requirements for light softness during use.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a lens group with soft astigmatism, including a lens housing, a light source is bolted to the right side of the lens housing, a connecting mechanism is installed and connected to the left side of the lens housing and extends through to the inner wall of the lens housing, and an astigmatism mechanism is provided between the connecting mechanism and the light source and is rotatably connected to the inner wall of the lens housing;

[0008] The connecting mechanism includes an adjusting ring, which is rotatably connected to the outer wall of the lens housing. Clamping blocks are symmetrically distributed on the inner wall of the adjusting ring and are slidably connected to the inside of the lens housing. A convex lens is clamped and connected between the clamping blocks. Limiting blocks slide symmetrically on the inner wall of the lens housing and are located on one side of the clamping blocks. A telescopic column is mechanically connected to the bottom end of the limiting block and extends through to the outer wall of the lens housing. A telescopic spring is mechanically connected between the telescopic column and the inner wall of the light source.

[0009] The astigmatism mechanism includes a rotating ring, which is rotatably connected to the outer wall of the lens housing and located to the right of the adjustment ring. The inner wall of the rotating ring is mechanically connected to an astigmatism plate and is rotatably connected to the inner wall of the lens housing. A grid plate is bolted to the inner wall of the lens housing and is located between the astigmatism plate and the light source.

[0010] Preferably, the connecting mechanism further includes a lens frame, which is threaded to the left side of the lens housing and sleeved with the outer wall of the lens housing. The limiting blocks hold a concave lens and are located on one side of the convex lens.

[0011] Preferably, the inner wall of the lens frame is provided with an internal thread, the outer wall of the lens housing is provided with a threaded groove that matches the internal thread of the lens frame, and the outer wall of the limiting block is L-shaped and fits against the outer wall of the concave lens.

[0012] Preferably, the inner wall of the lens housing is provided with a support groove that matches the telescopic column, the outer wall of the lens housing is provided with a spiral sliding groove that matches the clamping block, and the top of the clamping block is provided with a clamping groove that matches the outer wall of the convex lens.

[0013] Preferably, the rotating ring is rotatably connected to the lens housing via ball bearings, and the inner wall of the lens housing has a movable groove that matches the diffuser plate, and the surface of the grid plate is provided with multiple grid holes.

[0014] Preferably, the surface of the diffuser plate is connected with multiple light-reflecting strips, and the light-reflecting strips have a wavy shape and multiple chamfers machined on their surface.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] 1. By placing the convex lens between the clamping blocks and clamping it in place using the clamping grooves on the inner wall of the clamping blocks, the concave lens is placed inside the lens housing. The outer wall of the limiting block is L-shaped, and the concave lens is fitted and limited by the limiting block. Rotating the lens frame causes it to connect to the outer wall of the lens housing via threads and contact the telescopic column. This causes the telescopic column to be compressed and the telescopic spring to contract and move, bringing the limiting blocks closer together. This completes the fixation of the concave lens inside the lens housing.

[0017] 2. By rotating the rotating ring, the diffuser plate rotates, which in turn rotates the refractive strips on its surface. Multiple refractive strips with a wavy shape and machined chamfers on their surfaces allow light to refract at multiple angles within the lens housing, thus dispersing the light and creating a softer illumination. Simultaneously, rotating the adjusting ring rotates the clamping block, which slides within a spiral groove, adjusting the distance between the convex and concave lenses. This allows the convex and concave lenses to work together to scatter or focus the scattered light, enabling the lens assembly to meet the needs of different scenarios. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is an exploded structural diagram of the lens housing of this utility model;

[0021] Figure 3This is a cross-sectional structural diagram of the lens housing of this utility model;

[0022] Figure 4 This is a cross-sectional schematic diagram of the connection structure between the diffuser plate and the grid plate of this utility model.

[0023] Figure 5 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0024] Figure 6 For the present utility model Figure 4 Enlarged structural diagram at point B.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Lens housing; 101. Light source; 2. Connecting mechanism; 201. Lens frame; 202. Concave lens; 203. Convex lens; 204. Adjusting ring; 205. Clamping block; 206. Telescopic column; 207. Telescopic spring; 208. Limiting block; 3. Astigmatism mechanism; 301. Rotating ring; 302. Astigmatism plate; 303. Grille plate. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] This utility model provides, for example Figure 1-6 The image shows a soft astigmatism lens assembly, including a lens housing 1. A light source 101 is bolted to the right side of the lens housing 1. A connecting mechanism 2 is installed and connected to the left side of the lens housing 1 and extends through to the inner wall of the lens housing 1. An astigmatism mechanism 3 is provided between the connecting mechanism 2 and the light source 101 and is rotatably connected to the inner wall of the lens housing 1.

[0029] The connecting mechanism 2 includes an adjusting ring 204, which is rotatably connected to the outer wall of the lens housing 1. Clamping blocks 205 are symmetrically distributed on the inner wall of the adjusting ring 204 and are slidably connected to the inside of the lens housing 1. A convex lens 203 is clamped and connected between the clamping blocks 205. A limiting block 208 is symmetrically slidably on the inner wall of the lens housing 1 and is located on one side of the clamping block 205. A telescopic column 206 is mechanically connected to the bottom end of the limiting block 208 and extends through to the outer wall of the lens housing 1. A telescopic spring 207 is mechanically connected between the telescopic column 206 and the inner wall of the light source 101.

[0030] The astigmatism mechanism 3 includes a rotating ring 301, which is rotatably connected to the outer wall of the lens housing 1 and located to the right of the adjusting ring 204. The inner wall of the rotating ring 301 is mechanically connected to an astigmatism plate 302 and is rotatably connected to the inner wall of the lens housing 1. A grid plate 303 is bolted to the inner wall of the lens housing 1 and is located between the astigmatism plate 302 and the light source 101.

[0031] By cooperating with each other among the internal parts of the connecting mechanism 2, the extension and retraction adjustment of the convex lens 203 on the inner wall of the lens housing 1 can be completed, so that the convex lens 203 can perform secondary scattering or focusing on the scattered light source 101, thereby improving the lens group to meet different usage requirements. By cooperating with each other among the internal parts of the scattering mechanism 3, the scattering operation of the light source 101 can be completed.

[0032] Refer to the instruction manual appendix Figure 1-6 The connecting mechanism 2 also includes a lens frame 201, which is threaded to the left side of the lens housing 1 and sleeved with the outer wall of the lens housing 1. The concave lens 202 is held between the limiting blocks 208 and is located on one side of the convex lens 203. Through the mutual cooperation between the internal parts of the connecting mechanism 2, the concave lens 202 can be installed and fixed inside the lens housing 1.

[0033] Refer to the instruction manual appendix Figure 1-6 The inner wall of the lens frame 201 is provided with an internal thread, and the outer wall of the lens housing 1 is provided with a threaded groove that matches the internal thread of the lens frame 201. The outer wall of the limiting block 208 is L-shaped and fits against the outer wall of the concave lens 202. The L-shaped outer wall of the limiting block 208 and its fit against the outer wall of the concave lens 202 facilitates the installation and limiting of the concave lens 202 on the inner wall of the lens housing 1.

[0034] Refer to the instruction manual appendix Figure 1-6 The inner wall of the lens housing 1 is provided with a support groove that matches the telescopic column 206, and the outer wall of the lens housing 1 is provided with a spiral groove that matches the clamping block 205. The top of the clamping block 205 is provided with a clamping groove that matches the outer wall of the convex lens 203. The spiral groove on the outer wall of the lens housing 1 that matches the clamping block 205 and the clamping groove on the top of the clamping block 205 that matches the outer wall of the convex lens 203 facilitate the clamping block 205 to clamp and fix the convex lens 203. The clamping block 205 rotates and slides in the spiral groove, thereby adjusting the distance between the convex lens 203 and the concave lens 202.

[0035] Refer to the instruction manual appendix Figure 1-6The rotating ring 301 is rotatably connected to the lens housing 1 via ball bearings, and the inner wall of the lens housing 1 has a movable groove that matches the diffuser plate 302. The surface of the grid plate 303 is provided with multiple grid holes. By providing multiple grid holes on the surface of the grid plate 303, the grid plate 303 can perform preliminary refraction and diffuse light from the light source 101.

[0036] Refer to the instruction manual appendix Figure 1-6 The surface of the diffuser plate 302 is connected with multiple refractive strips, and the refractive strips have a wavy shape and multiple chamfers. The multiple refractive strips connected to the surface of the diffuser plate 302, with their wavy shape and multiple chamfers, allow the light source 101 to refract at multiple angles on the inner wall of the lens housing 1 when it shines on the refractive strips. This disperses the illumination angle of the light source 101, making the illumination from the light source 101 softer.

[0037] The working principle of this practical application is as follows:

[0038] Refer to the instruction manual appendix Figure 1-6 By placing the convex lens 203 between the clamping blocks 205 and clamping and fixing the convex lens 203 through the clamping groove on the inner wall of the clamping block 205, and then placing the concave lens 202 inside the lens housing 1, the concave lens 202 is fixed by the L-shaped outer wall of the limiting block 208 and the limiting block 208. The lens frame 201 is rotated so that the lens frame 201 is connected to the outer wall of the lens housing 1 through the thread and contacts the telescopic column 206. The telescopic column 206 is forced to compress the telescopic spring 207 and move, so that the limiting blocks 208 move closer to each other, thus fixing the position of the concave lens 202 inside the lens housing 1.

[0039] Refer to the instruction manual appendix Figure 1-6By rotating the rotating ring 301, the diffusing plate 302 rotates, which in turn rotates the refractive strips on its surface. Multiple refractive strips are connected to the surface of the diffusing plate 302, and these strips have a wavy shape and are machined with multiple chamfers. This allows the light source 101 to refract at multiple angles within the lens housing 1 when it illuminates the refractive strips, thus breaking down the illumination angle of the light source 101. To make the illumination from the light source 101 softer, the adjusting ring 204 is rotated, which in turn drives the clamping block 205 to rotate. By rotating and sliding the clamping block 205 within the spiral groove, the distance between the convex lens 203 and the concave lens 202 can be adjusted. This allows the convex lens 203 and the concave lens 202 to work together to perform secondary scattering or focusing of the scattered light source 101, thus enabling the lens group to meet the usage requirements of different scenarios.

[0040] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A lens group which is soft for astigmatism, characterized by: Including the lens shell (1), the right side of the lens shell (1) is bolted with a light source (101), the left side of the lens shell (1) is connected with a connecting mechanism (2), and penetrates to the inner wall of the lens shell (1), the connecting mechanism (2) and the light source (101) are provided with a light scattering mechanism (3), and are rotationally connected to the inner wall of the lens shell (1); The connecting mechanism (2) comprises an adjusting ring (204), the adjusting ring (204) is rotationally connected to the outer wall of the lens shell (1), the inner wall of the adjusting ring (204) is symmetrically provided with clamping blocks (205), and the clamping blocks (205) are slidingly connected to the inside of the lens shell (1), the clamping blocks (205) are clamped and connected with convex lenses (203) therebetween, the inner wall of the lens shell (1) is symmetrically slidingly provided with limit blocks (208) on one side of the clamping blocks (205), the bottom end of the limit block (208) is mechanically connected with a telescopic column (206), and penetrates to the outer wall of the lens shell (1), the telescopic column (206) and the inner wall of the light source (101) are mechanically connected with a telescopic spring (207); The light scattering mechanism (3) comprises a rotating ring (301), the rotating ring (301) is rotationally connected to the outer wall of the lens shell (1), and is located on the right side of the adjusting ring (204), the inner wall of the rotating ring (301) is mechanically connected with a light scattering plate (302), and is rotationally connected to the inner wall of the lens shell (1), the inner wall of the lens shell (1) is bolted with a grid plate (303), and is located between the light scattering plate (302) and the light source (101).

2. A lens group having a soft astigmatism according to claim 1, characterized by: The connecting mechanism (2) further comprises a lens frame (201), the lens frame (201) is threadedly connected to the left side of the lens shell (1), and is sleeved with the outer wall of the lens shell (1), the limit blocks (208) clamping have concave lenses (202) therebetween, and are located on one side of the convex lenses (203).

3. A lens group having a soft astigmatism according to claim 2, characterized by: The inner wall of the lens frame (201) is provided with an internal thread, the outer wall of the lens shell (1) is provided with a thread groove matched with the internal thread of the lens frame (201), the outer wall of the limit block (208) is in L-shaped structure, and is attached with the outer wall of the concave lens (202).

4. A lens group according to claim 1, wherein: The inner wall of the lens shell (1) is provided with a supporting groove matched with the telescopic column (206), the outer wall of the lens shell (1) is provided with a spiral sliding groove matched with the clamping block (205), and the top end of the clamping block (205) is provided with a clamping groove matched with the outer wall of the convex lens (203).

5. A lens group according to claim 1, wherein: The rotating ring (301) is rotationally connected with the lens shell (1) through the ball, and the inner wall of the lens shell (1) is provided with a movable groove matched with the light scattering plate (302), and the surface of the grid plate (303) is provided with a plurality of grid holes.

6. A lens group according to claim 1, wherein: The surface of the light scattering plate (302) is connected with a plurality of light folding strips, and the light folding strips are in wave structure, and the surface of the light folding strips is mechanically processed with a plurality of chamfers.

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