Universal zoom lens

Abstract

The utility model relates to the technical field of zoom lenses, and discloses a universal zoom lens which comprises a lens body, the lens body is provided with a light inlet cavity and a light outlet part, the light inlet cavity is arranged in a flaring shape in the direction towards a light source, the light inlet cavity comprises two light inlet side faces and a light inlet cambered surface, and the light inlet cambered surface is arranged in an arc-shaped arched mode in the direction towards the light source. The light-emitting part comprises a fully reflecting surface and a light-emitting surface, the light-in side surface is used for refracting light to the fully reflecting surface, the light-in cambered surface is used for refracting the light-emitting surface, the fully reflecting surface is used for reflecting the light to the light-emitting surface, and the light is projected through the light-emitting surface to form light spots; the light incident side face is arranged in a gradually inclined and extending mode in the direction towards the light source. The light inlet cavity is flared, so that most of light can be emitted into the light inlet hole, and the lighting effect is improved; and meanwhile, most of light rays are crossed, so that the light rays are softer, formed light spots are more gathered, light interception is less, the anti-dazzle capability is improved, the light pattern change of the light spots is smaller, the uniformity of the light spots is improved, and the effects of no yellow spots and reduction of stray light are achieved.

Description

Technical Field

[0001] This utility model patent relates to the technical field of zoom lenses, specifically to universal zoom lenses. Background Technology

[0002] Lenses are optical systems used to change the light field distribution of LEDs. They are generally composed of transmissive and / or reflective lenses. When the light from an LED passes through a transmissive lens, it is refracted and focused. When the light from an LED passes through a reflective lens, it is reflected and focused, thereby enhancing the light utilization efficiency and luminous efficiency.

[0003] Currently, to improve the application scenarios of lenses, lenses are equipped with zoom adjustment. For example, the prior patent with authorization announcement number CN203893072U discloses a zoom lens, which includes: a central portion, which includes an aspherical lens surface and a first total internal reflection lens portion. When the central portion is close to the light source, it generates a wide-angle beam angle, and when the central portion is far from the light source, it generates a narrow-angle beam angle; and an outer edge portion, which is located on the outer edge of the central portion and is integrally formed with the central portion, having a second total internal reflection lens portion. When the central portion is far from the light source, some of the light emitted by the light source passes through the outer edge portion, generating a narrow-angle beam angle.

[0004] In existing technologies, focusing is achieved solely by adjusting the distance between the light source and the lens. When the emission angle is large, the light source is close to the lens, which can easily lead to uneven color separation and the appearance of yellow spots. When the emission angle is small, the light source is far away, which results in low overall lens efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a universal zoom lens, which aims to solve the problem in the prior art that zoom lenses are prone to producing light spots and affecting light efficiency when focusing.

[0006] This invention is implemented as follows: a universal zoom lens includes a lens body, which has an entrance cavity and an exit portion. The entrance cavity is arranged correspondingly to a light source. The entrance cavity is flared outwards in the direction towards the light source. The entrance cavity includes two entrance side surfaces and an entrance arc surface. The entrance arc surface is arched in the direction towards the light source. The exit portion includes a total reflection surface and an exit surface. The entrance side surfaces refract light to the total reflection surface, the entrance arc surface refracts light to the exit surface, and the total reflection surface reflects light to the exit surface. The light is projected through the exit surface to form a light spot. The entrance arc surface is located between the two entrance side surfaces, which are gradually inclined and extended in the direction towards the light source.

[0007] Furthermore, the light-incident side is arranged in a smooth shape.

[0008] Furthermore, the light-incident side is provided with microstructures, which are arranged in a frosted or scale-like manner.

[0009] Furthermore, the total reflection surface has an inner end near the light source, the inner end of the light-incident side surface is aligned with the light-incident arc surface, and the outer end of the light-incident side surface is aligned with the inner end.

[0010] Furthermore, the light-emitting surface includes a light-emitting side surface and a light-emitting arc surface. The light-emitting arc surface is arranged correspondingly to the light-incident arc surface, and the light-emitting arc surface is arranged in an arched arc shape in the direction away from the light-incident arc surface. The light-emitting arc surface is used to receive the light refracted by the light-incident arc surface and refract the light outward. The light-emitting side surface is used to receive the light reflected by the total internal reflection surface and refract the light outward. The light is converged by the light-emitting side surface and the light-emitting arc surface to form a light spot.

[0011] Furthermore, the light-emitting arc surface is provided with spiral patterns, the spiral patterns are arranged in a curved shape, and the spiral patterns include multiple spiral surfaces, each of which is arranged in a flat, interlocking manner.

[0012] Furthermore, the light-emitting side is arranged in an enclosing manner, and the light-emitting side is arranged in an flared shape along the direction away from the light-incident arc surface. The light-emitting side is provided with a scale surface, which is arranged in a curved shape and includes multiple scales, each scale being arranged in a flat, joined arrangement.

[0013] Furthermore, the incident light arc surface is arranged in a smooth shape.

[0014] Furthermore, the light source has a rotation point, and the rotation point, the center of the incident light arc surface, and the center of the emitting light surface are arranged coaxially; the light source is rotatably arranged based on the rotation point.

[0015] Furthermore, the lens body is movably arranged relative to the light source.

[0016] Compared with existing technologies, the universal zoom lens provided by this utility model has an enlarged entrance cavity arranged in a wide-opening shape along the direction towards the light source, thus increasing the opening of the entrance cavity and achieving a large opening arrangement. Even when the light source is far away, most of the light can still be directed into the entrance cavity, thereby improving the light efficiency. With the combined effect of the entrance side, entrance arc surface, total reflection surface, and light exit surface, most of the light rays are emitted in a cross direction, making the light softer and the light spot more focused, with less light interception, improving the anti-glare capability. At the same time, the change in the light spot pattern is significantly smaller, improving the uniformity of the light spot, achieving the effect of no yellow spots and reducing stray light, resulting in good light transmission effect, and making the emitted light spot clear and with good color. Attached Figure Description

[0017] Figure 1 This is a cross-sectional schematic diagram of the universal zoom lens provided by this utility model;

[0018] Figure 2 This is a three-dimensional schematic diagram of the universal zoom lens provided by this utility model;

[0019] Figure 3 This is a schematic diagram of the movement of the universal zoom lens provided by this utility model;

[0020] Figure 4 This is a cross-sectional schematic diagram of the lens body of the universal zoom lens provided by this utility model;

[0021] Figure 5 This is a schematic diagram of the optical path of the universal zoom lens provided by this utility model;

[0022] Figure 6 This is a schematic diagram of the optical path for expressing the zoom state of the universal zoom lens provided by this utility model. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0025] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] Reference Figure 1-6 The image shown is a preferred embodiment of the present invention.

[0027] A universal zoom lens includes a lens body 1, which has an entrance cavity 11 and an exit portion. The entrance cavity 11 is arranged correspondingly to a light source. The entrance cavity 11 is arranged in a flared shape along the direction towards the light source. The entrance cavity 11 includes two entrance side surfaces 111 and an entrance arc surface 112. The entrance arc surface 112 is arranged in an arc shape along the direction towards the light source. The exit portion includes a total reflection surface 12 and an exit surface. The entrance side surfaces 111 are used to refract light to the total reflection surface 12. The entrance arc surface 112 is used to refract light to the exit surface. The total reflection surface 12 is used to reflect light to the exit surface. The light is projected through the exit surface to form a light spot.

[0028] The aforementioned omnidirectional zoom lens, due to the flared arrangement of the light-incident cavity 11 along the direction towards the light source, increases the opening of the light-incident cavity 11, achieving a large opening arrangement of the light-incident cavity 11. Even when the light source is far away, most of the light can still be directed into the light-incident aperture, thereby improving the light efficiency. With the combined action of the light-incident side 111, the light-incident arc surface 112, the total reflection surface 12, and the light-exiting surface, most of the light rays are emitted in a cross pattern, making the light softer and the resulting light spot more focused, with less light interception, improving the anti-glare capability. At the same time, the change in the light spot pattern is significantly smaller, improving the uniformity of the light spot, achieving the effect of no yellow spots and reducing stray light, which can bring good light transmission effect, making the emitted light spot clear and with good color.

[0029] In optical simulations, the optical efficiency of the universal zoom lens provided by this invention is 78.8% at a small angle and 85.6% at a large angle; the efficiency of commonly available focusing lenses is generally 60% at a small angle and 80% at a large angle. Simulation results show that the universal zoom lens provided by this invention improves optical efficiency by 15%.

[0030] The light-incident arc surface 112 is located between the two light-incident side surfaces 111, which are arranged to gradually extend at an angle towards the light source; this achieves the characteristic of a large optical opening, giving the lens body 1 a larger light-incident range, enhancing the entry of light, and thus improving the light efficiency of the lens.

[0031] The total reflection surface 12 has an inner end near the light source, the inner end of the light-incident side surface 111 is aligned with the light-incident arc surface 112, and the outer end of the light-incident side surface 111 is aligned with the inner end; this maximizes the light-incident range of the lens body 1, enhances the entry of light, and thus provides the light efficiency of the lens.

[0032] The light-emitting surface includes a light-emitting side surface 13 and a light-emitting arc surface 14. The light-emitting arc surface 14 is arranged correspondingly to the light-incident arc surface 112, and the light-emitting arc surface 14 is arranged in an arched arc shape in the direction away from the light-incident arc surface 112. The light-emitting arc surface 14 is used to receive the light refracted by the light-incident arc surface 112 and refract the light outward. The light-emitting side surface 13 is used to receive the light reflected by the total reflection surface 12 and refract the light outward. The light is converged by the light-emitting side surface 13 and the light-emitting arc surface 14 to form a light spot.

[0033] With the cooperation of the light-emitting side 13 and the light-emitting curved surface 14, most of the light rays are emitted in a cross pattern, making the light rays more concentrated. At the same time, there is less light interception, achieving a deep anti-glare effect.

[0034] Furthermore, the combination of the light-emitting side 13 and the light-emitting arc surface 14 helps to ensure the light-emitting efficiency and effect of the light source, making the formed light spot saturated and clear, and effectively avoiding the light-emitting effect being affected by the adjustment and change of the light emission angle.

[0035] The light-emitting arc surface 14 is provided with spiral patterns. The spiral patterns are arranged in a curved shape and include multiple spiral surfaces. Each spiral surface is arranged in a flat and interlocking manner. This can bring good light transmission effect and at the same time improve the light mixing effect of the lens.

[0036] Alternatively, the light-emitting curved surface 14 is provided with a Thiessen polygonal texture, which can bring good light transmission effect.

[0037] Spiral patterns are a new type of bead that combines optics and appearance by programming based on the shape of the curved surface. When combined with the incident light arc surface 112, it can bring good light transmission effect, so that the emitted light spot has a clear and good color effect.

[0038] The light-emitting side 13 is arranged in an enclosed manner, and the light-emitting side 13 is arranged in an flared shape along the direction away from the light-incident arc surface 112. The light-emitting side 13 is provided with a scale surface, which is arranged in a curved shape. The scale surface includes multiple scales, and each scale is arranged in a flat and connected manner; thereby improving the light mixing effect of the lens.

[0039] The scales are arranged in a diamond shape, and each micro-surface is laid out in a flat, sequential arrangement; this fully refracts light and ensures optimal light effect.

[0040] The scales are arranged in a Tyson polygon array, which refracts light in all directions and ensures light efficiency.

[0041] The incident light arc surface 112 is arranged in a smooth shape to improve light transmission and thus enhance light efficiency.

[0042] The light-receiving side 111 is arranged in a smooth shape to improve light transmission and thus enhance light efficiency.

[0043] The light-receiving side 111 is provided with microstructures, which are arranged in a frosted or scale-like manner, thereby improving the light efficiency.

[0044] Alternatively, the light-incident side 111 may be provided with a scale-like surface to improve the light mixing effect of the lens.

[0045] The light source has a rotation point, and the center of the rotation point, the incident light arc surface 112, and the center of the light emitting surface are arranged coaxially. The light source is rotatably arranged based on the rotation point, thus enabling zooming and focusing.

[0046] It includes a light source frame and light source components for mounting the light source. The rotation or oscillation of the light source components is used to achieve the rotation or oscillation of the light source.

[0047] The light source frame is installed inside the lamp housing. Light source shafts are provided on both sides of the light source frame. The light source shafts are hinged to the lamp housing. When subjected to external force, the light source frame swings relative to the lamp housing, thereby adjusting the light source.

[0048] Alternatively, the rotation of the light source frame can be achieved by rotating the light source axis, thereby enabling the rotational adjustment of the light source.

[0049] The lens body 1 is movable relative to the light source; by different installation positions, the distance between the lens body 1 and the light source can be adjusted to meet the needs of the lamp for different scenarios.

[0050] The lens body 1 is installed inside the lamp housing. By changing the installation position of the lens body 1 relative to the lamp housing, the distance between the lens body 1 and the light source can be adjusted to meet the needs of the lamp for different scenarios.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vari-focal lens characterized in that, The lens body has a light inlet cavity and a light outlet part, the light inlet cavity is arranged corresponding to the light source, the light inlet cavity is arranged in a flared shape along the direction towards the light source, the light inlet cavity includes two light inlet sides and a light inlet arc surface, the light inlet arc surface is arranged in an arc shape along the direction towards the light source, the light outlet part includes a total reflection surface and a light outlet surface, the light inlet sides are used to refract light rays to the total reflection surface, the light inlet arc surface is used to refract light rays to the light outlet surface, the total reflection surface is used to reflect light rays to the light outlet surface, and the light rays are projected to form a light spot through the light outlet surface; the light inlet arc surface is between the two light inlet sides, and the two light inlet sides are arranged in a gradually inclined extension along the direction towards the light source.

2. The gimbal zoom lens of claim 1, wherein, The light inlet sides are arranged in a smooth shape.

3. The gimbal zoom lens of claim 1, wherein, The light inlet sides are provided with microstructures arranged in a matte shape or scale shape.

4. The gimbal zoom lens of claim 1, wherein, The total reflection surface has an inner end close to the light source, the inner end of the light inlet side is butt-jointed with the light inlet arc surface, and the outer end of the light inlet side is arranged in butt-joint with the inner end.

5. The gimbal zoom lens according to any one of claims 1 to 4, wherein, The light outlet surface includes a light outlet side and a light outlet arc surface, the light outlet arc surface is arranged corresponding to the light inlet arc surface, and the light outlet arc surface is arranged in an arched shape along the direction away from the light inlet arc surface, the light outlet arc surface is used to receive the light rays refracted by the light inlet arc surface and refract the light rays outward, and the light outlet side is used to receive the light rays reflected by the total reflection surface and refract the light rays outward, and the light rays are collected through the light outlet side and the light outlet arc surface to form a light spot.

6. The gimbal zoom lens of claim 5, wherein, The light outlet arc surface is provided with spiral lines arranged in a curved shape, the spiral lines include a plurality of spiral surfaces, and each spiral surface is arranged in a flat butt joint.

7. The gimbal zoom lens of claim 5, wherein, The light outlet side is arranged in a closed shape and is arranged in a flared shape along the direction away from the light inlet arc surface, the light outlet side is provided with a scale surface arranged in a curved shape, and the scale surface includes a plurality of scale bodies, and each scale body is arranged in a flat butt joint.

8. The gimbal zoom lens of any of claims 1-4, wherein, The light inlet arc surface is arranged in a smooth shape.

9. The gimbal zoom lens of any of claims 1-4, wherein, The light source has a rotation point, the rotation point, the center of the light inlet arc surface, and the center of the light outlet surface are arranged corresponding to the same axis, and the light source is arranged to be rotatable based on the rotation point.

10. The gimbal zoom lens of any of claims 1-4, wherein, The lens body is arranged to be movable relative to the light source.

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