Zoom lighting module and lighting device

Abstract

The utility model discloses a zooming lighting module and lighting device relates to lighting device technical field, and zooming lighting module includes light source and zooming component, and zooming component includes drive arrangement, has the first lens of negative optical power and has the second lens of positive optical power, and first lens and second lens all set up in the emergent light direction of light source, and second lens is coaxial with first lens and is set up between first lens and light source, and drive arrangement is used for driving second lens and translates between first lens and light source, to make the light column of light source converging or diverging, and this zooming lighting module lens group number is less, can reduce the refraction number of light in reducing the volume of lighting module, satisfy miniaturization and light weight demand, guarantee effective illumination intensity. Lighting device, including above-mentioned zooming lighting module, cost is low, and the volume is small, can be applicable to a variety of mobile / non - mobile scene need.

Description

Technical Field

[0001] This utility model relates to the field of lighting device technology, and in particular to a zoom lighting module and lighting device. Background Technology

[0002] With the continuous advancement of technology and the increasing demands for lighting effects, zoom lighting modules have been widely used in military lighting, stage lighting, and other fields. However, existing zoom lighting modules have a large number of lens groups and a large size, resulting in reduced effective lighting intensity after multiple refractions / reflections, which affects focusing and image quality. Utility Model Content

[0003] The purpose of this invention is to provide a zoom lighting module and lighting device with fewer lens groups, which can reduce the size of the lighting module, meet the requirements of miniaturization and lightweighting, reduce the number of light refractions, ensure effective lighting intensity, and solve the problems existing in the prior art.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] This utility model provides a zoom lighting module, including a light source and a zoom component. The zoom component includes a driving device, a first lens with negative optical power, and a second lens with positive optical power. The first lens and the second lens are both disposed in the direction of the emitted light of the light source. The second lens is coaxially disposed with the first lens and is disposed between the first lens and the light source. The driving device is used to drive the second lens to translate between the first lens and the light source so that the light beam generated by the light source converges or diverges.

[0006] In some embodiments, the relative position of the first lens and the light source remains fixed.

[0007] In some embodiments, the first lens is a plano-concave lens, and the plane of the plano-concave lens is oriented toward the light source.

[0008] In some embodiments, the first lens is a plano-concave lens, with the concave surface of the plano-concave lens facing the light source.

[0009] In some embodiments, the second lens is a plano-convex lens, with the convex surface of the plano-convex lens facing the light source.

[0010] In some embodiments, the zoom assembly includes a lens barrel, one end of which is connected to the housing of the light source; a first lens is disposed at the other end of the lens barrel; and a second lens is slidably mounted inside the lens barrel via a mounting structure. The second lens, the first lens, the lens barrel, and the emitted light from the light source are coaxial. A driving device is disposed on the lens barrel and is used to drive the second lens to move between the first lens and the light source.

[0011] In some embodiments, the mounting structure is a mounting cylinder, which is slidably fitted inside the lens barrel. A first sliding rod is provided on the inner wall of the lens barrel along its own axial direction. A through hole is provided on the side wall of the mounting cylinder, which is slidably connected to the first sliding rod. The driving device includes a driving bracket, a driving motor, a lead screw, a second sliding rod, and a slider. A through groove is formed on the side wall of the lens barrel along its axial direction. The driving bracket is fixed to the lens barrel and embedded in the through groove. The driving motor and the second sliding rod are mounted on the driving bracket. The lead screw and the second sliding rod are both parallel to the axis of the lens barrel. The lead screw is threadedly connected to the slider, and the second sliding rod is slidably connected to the slider. One end of the lead screw is rotatably connected to the driving bracket, and the other end of the lead screw is coaxially connected to the output shaft of the driving motor. The driving motor drives the lead screw to rotate, thereby causing the slider to slide along the axial direction of the lens barrel. The slider is connected to the mounting cylinder, thereby causing the mounting cylinder to slide relative to the lens barrel along its own axial direction.

[0012] In some embodiments, a first pressure ring is threadedly connected to the outer periphery of the end of the lens barrel where the first lens is mounted. The first pressure ring includes a first threaded connecting section and a first clamping section connected in sequence. The inner ring of the first threaded connecting section is threadedly connected to the outer ring of the lens barrel. The first clamping section is provided with a first clamping step, which can press the first lens into the inside of the lens barrel. A second pressure ring is threadedly connected to the outer periphery of the end of the mounting cylinder where the second lens is mounted. The second pressure ring includes a second threaded connecting section and a second clamping section connected in sequence. The inner ring of the second threaded connecting section is threadedly connected to the outer ring of the mounting cylinder. The second clamping section is provided with a second clamping step, which can press the second lens into the inside of the mounting cylinder. A waterproof structure is also provided between the first lens and the lens barrel, and between the second lens and the mounting cylinder.

[0013] In some embodiments, the light source is an LED light source or a laser light source.

[0014] This utility model provides a lighting device, including an adjustment mechanism and the aforementioned zoom lighting module, wherein the adjustment mechanism is capable of adjusting the lighting angle of the zoom lighting module.

[0015] The present invention achieves the following technical advantages over the prior art:

[0016] The zoom lighting module provided by this utility model achieves the convergence or divergence of light beams by setting a light source and a second lens and a first lens in the direction of light emission from the light source, and by translating the second lens between the first lens and the light source. At the same time, since it only has two lenses, the number of lens groups is small, and the optical path for zooming is shorter. This can effectively reduce the size of the lighting module, meet the requirements of miniaturization and lightweighting, reduce the number of light refractions, reduce light loss in the optical path, and ensure effective lighting intensity.

[0017] This utility model also provides a lighting device including the above-mentioned zoom lighting module, which is low in cost, small in size, and suitable for various mobile / non-mobile scenarios. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the zoom lighting module in Embodiment 1 of this utility model;

[0020] Figure 2 This is a schematic diagram illustrating the beam divergence effect of the zoom lighting module in Embodiment 1 of this utility model.

[0021] Figure 3 This is a schematic diagram illustrating the focusing effect of the zoom lighting module on the light beam in Embodiment 1 of this utility model;

[0022] Figure 4 This is a schematic diagram illustrating the beam divergence effect of the zoom lighting module in Embodiment 2 of this utility model.

[0023] Figure 5 This is a schematic diagram of the focusing effect of the zoom lighting module on the light beam in Embodiment 2 of this utility model.

[0024] In the diagram: 100-Zoom lighting module; 1-Light source; 2-First lens; 3-Second lens; 4-Lens barrel; 41-First slide bar; 42-Drive bracket; 43-Drive motor; 44-Lead screw; 45-Second slide bar; 46-Slider; 47-Through groove; 48-First pressure ring; 5-Mounting cylinder; 51-Second pressure ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The purpose of this invention is to provide a zoom lighting module and lighting device with fewer lens groups, which can reduce the size of the lighting module, meet the requirements of miniaturization and lightweighting, reduce the number of light refractions, ensure effective lighting intensity, and solve the problems existing in the prior art.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figures 1-5 The present invention will be further described in detail below with reference to specific embodiments.

[0028] Example 1

[0029] This embodiment provides a zoom lighting module 100, for reference... Figures 1-3 The system includes a light source 1 and a zoom assembly. The zoom assembly includes a driving device, a first lens 2 with negative optical power, and a second lens 3 with positive optical power. Both the first lens 2 and the second lens 3 are positioned in the direction of light emission from the light source 1. The second lens 3 is coaxially arranged with the first lens 2 and is positioned between the first lens 2 and the light source 1. The driving device is used to drive the second lens 3 to translate between the first lens 2 and the light source 1, so that the light beam generated by the light source 1 converges or diverges. By setting the light source 1 and the second lens 3 and the first lens 2 in the direction of light emission from the light source 1, and by translating the second lens 3 between the first lens 2 and the light source 1 (i.e., the first lens 2 remains coaxial with the second lens 3 during the movement), the convergence or divergence of the light beam is achieved. At the same time, since there are only two lenses, the number of lens groups is small, and the optical path for zooming is shorter. This effectively reduces the size of the lighting module, meets the requirements of miniaturization and lightweighting, reduces the number of light refractions, reduces light loss in the optical path, and ensures effective lighting intensity.

[0030] In some implementations, reference Figures 1-3 The relative positions of the first lens 2 and the light source 1 remain fixed. By adjusting only the relative positions of the second lens 3 and the first lens 2, the convergence and divergence of the light beams refracted by the first lens 2 and the second lens 3 can be achieved. The structure is simple, easy to implement, and easy to adjust to a light beam that meets actual needs.

[0031] In some implementations, reference Figures 1-3The first lens 2 is a plano-concave lens, with its flat surface facing the light source 1. Specifically, a plano-concave lens is a lens with one flat side and one concave side. By aligning the flat surface of the plano-concave lens with the light source 1, light rays first pass through the unrefractive flat surface and then diverge through the concave surface, resulting in a smaller overall divergence angle, which is beneficial for shaping the light column. In other embodiments, the first lens 2 can also be a biconcave lens or a meniscus lens with negative optical power.

[0032] In some implementations, reference Figures 1-3 The second lens 3 is a plano-convex lens, with its convex surface facing the light source 1. By positioning the convex surface of the plano-convex lens towards the light source 1, the converging effect of the convex surface can redirect light towards the vicinity of the focal point, reducing the dependence of the second lens 3 on the collimation of the light emitted from the light source 1. This results in a higher overall aberration tolerance for the zoom illumination module 100 and stronger system robustness. In other embodiments, the second lens 3 can also be a biconvex lens or a meniscus lens with positive optical power.

[0033] In some implementations, reference Figure 1 The zoom assembly includes a lens barrel 4, one end of which is connected to the housing of the light source 1. A first lens 2 is disposed at the other end of the lens barrel 4, and a second lens 3 is slidably mounted inside the lens barrel 4 via a mounting structure. The second lens 3, the first lens 2, the lens barrel 4, and the emitted light from the light source 1 are coaxial. A drive device is disposed on the lens barrel 4 to drive the second lens 3 to move between the first lens 2 and the light source 1. By setting the lens barrel 4 so that the second lens 3 is slidably connected to the lens barrel 4 via the mounting structure, translation of the second lens 3 between the first lens 2 and the light source 1 can be achieved. The structure is simple and easy to implement.

[0034] In some implementations, reference Figure 1The mounting structure is a mounting cylinder 5, which is slidably fitted inside the lens barrel 4. A first sliding rod 41 is provided on the inner wall of the lens barrel 4 along its own axial direction. A through hole is provided on the side wall of the mounting cylinder 5 to slidably connect with the first sliding rod 41. The driving device includes a driving bracket 42, a driving motor 43, a lead screw 44, a second sliding rod 45, and a slider 46. A through groove 47 is opened on the side wall of the lens barrel 4 along its axial direction. The driving bracket 42 is fixed to the lens barrel 4 and embedded in the through groove 47. The driving motor 43 and the second sliding rod 45 are located on the driving bracket 42. On the bracket 42, the lead screw 44 and the second slide rod 45 are both parallel to the axis of the lens barrel 4. The lead screw 44 is threadedly connected to the slider 46, and the second slide rod 45 is slidably connected to the slider 46. One end of the lead screw 44 is rotatably connected to the drive bracket 42, and the other end of the lead screw 44 is coaxially connected to the output shaft of the drive motor 43. The drive motor 43 is used to drive the lead screw 44 to rotate, thereby driving the slider 46 to slide along the axial direction of the lens barrel 4. The slider 46 is connected to the mounting cylinder 5, thereby driving the mounting cylinder 5 to slide relative to the lens barrel 4 along its own axial direction. In this embodiment, in order to ensure that the mounting cylinder 5 slides stably in the lens barrel 4, two first slide rods 41 are symmetrically arranged, and two through holes that cooperate with the first slide rods 41 are opened on the corresponding mounting cylinder 5. By setting the drive motor 43, the lead screw 44 is coaxially fixed with the output shaft of the drive motor 43. By rotating the drive motor 43, the lead screw 44 is rotated, thereby driving the threaded slider 46 to move along the axial direction of the lens barrel 4, thereby realizing the translation of the second lens 3 fixed in the mounting cylinder 5 between the first lens 2 and the light source 1. The structure is simple and easy to implement. In this embodiment, the slider 46 is connected to the mounting cylinder 5 by a snap-fit ​​connection. In other embodiments, other detachable fixed connection methods can also be used. Furthermore, the forward and reverse rotation of the lead screw 44 driven by the drive motor 43 controls the distance of the second lens 3 from the light source, achieving precise control of the light beam by the zoom illumination module 100. A bearing seat is fixed to the inner wall of the drive bracket 42, and the lead screw 44 is rotatably connected to the bearing seat via a bearing, thereby achieving a rotatable connection between one end of the lead screw 44 and the drive bracket 42. In other embodiments, the lead screw 44 can also be rotatably connected to the drive bracket 42 in other ways. In other embodiments, to ensure the waterproof effect of the lens barrel 4, a waterproof rubber layer can be provided between the drive bracket 42 and the lens barrel.

[0035] In some implementations, reference Figure 1The outer periphery of the end of the lens barrel 4 where the first lens 2 is installed is also threadedly connected to a first pressure ring 48. The first pressure ring 48 includes a first threaded connecting section and a first pressing section connected in sequence. The inner ring of the first threaded connecting section is threadedly connected to the outer ring of the lens barrel 4. The first pressing section is provided with a first pressing step, which can press the first lens 2 into the inside of the lens barrel 4. The outer periphery of the end of the mounting cylinder 5 where the second lens 3 is installed is also threadedly connected to a second pressure ring 51. The second pressure ring 51 includes a second threaded connecting section and a second pressing section connected in sequence. The inner ring of the second threaded connecting section is threadedly connected to the outer ring of the mounting cylinder 5. The second pressing section is provided with a second pressing step, which can press the second lens 3 into the inside of the mounting cylinder 5. A waterproof structure is also provided between the first lens 2 and the lens barrel 4, and between the second lens 3 and the mounting cylinder 5. By setting the first pressure ring 48 and the second pressure ring 51, the first lens 2 can be pressed tightly into the lens barrel 4, and the second lens 3 can be pressed tightly into the mounting cylinder 5. This ensures the stable installation of the first lens 2 and the second lens 3, and avoids the zoom illumination module 100 from malfunctioning due to accidental detachment of the first lens 2 or the second lens 3, or accidental injury caused by detachment of the first lens 2 or the second lens 3. In this embodiment, the waterproof structure is an O-ring. A first groove is provided on the mounting surface of the first lens 2 inside the lens barrel 4. The O-ring is set in the first groove and protrudes from the mounting surface. After the first lens 2 is installed, the O-ring can be pressed circumferentially into the first groove to prevent moisture from entering the lens barrel 4. Similarly, a second groove for setting the O-ring is also provided on the mounting surface of the second lens 3 inside the mounting cylinder 5. After the second lens 3 is installed, the O-ring can be pressed circumferentially into the second groove.

[0036] In some implementations, light source 1 is an LED light source or a laser light source. Specifically, the laser light source can be a semiconductor laser, such as a VCSEL (vertical cavity surface-emitting laser), a gas laser, or other similar laser light source.

[0037] In some embodiments, the first lens 2 and the second lens 3 are made of plastic lenses to reduce production costs and facilitate mass production.

[0038] Example 2

[0039] The difference between the zoom lighting module 100 provided in this embodiment and that in Embodiment 1 is that, referring to... Figures 4-5 The first lens 2 is a plano-concave lens, with its concave surface facing the light source 1. When the light emitted from the light source 1 is directly refracted at the concave surface, the divergence effect is more significant, which is beneficial for the rapid divergence of the light beam from the light source 1.

[0040] Example 3

[0041] This embodiment provides a lighting device, including an adjustment mechanism and the aforementioned zoom lighting module 100. The adjustment mechanism can adjust the lighting angle of the zoom lighting module 100. Specifically, the adjustment mechanism may include an adjustment frame and a motor. The motor's output shaft is directly fixedly connected to the adjustment frame, enabling the motor to drive the adjustment frame to rotate, thereby achieving angle adjustment. Alternatively, the adjustment mechanism can be configured such that the motor is connected to a cam-linkage structure to achieve the oscillation of the zoom lighting module 100. The lighting device provided in this embodiment is low-cost and small in size, and by incorporating an adjustment mechanism, such as an angle adjustment mechanism, it can be applied in various scenarios, making it widely applicable to lighting in both mobile and non-mobile environments.

[0042] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A zoom lighting module, characterized in that: include: light source; A zoom assembly includes a driving device, a first lens with negative optical power, and a second lens with positive optical power. The first lens and the second lens are both disposed in the direction of the emitted light from the light source. The second lens is coaxially disposed with the first lens and disposed between the first lens and the light source. The driving device is used to drive the second lens to translate between the first lens and the light source so that the light beam generated by the light source converges or diverges.

2. The zoom lighting module according to claim 1, characterized in that: The relative position of the first lens and the light source remains fixed.

3. The zoom lighting module according to claim 2, characterized in that: The first lens is a plano-concave lens, and the plane of the plano-concave lens is oriented towards the light source.

4. The zoom lighting module according to claim 2, characterized in that: The first lens is a plano-concave lens, and the concave surface of the plano-concave lens is oriented towards the light source.

5. The zoom lighting module according to claim 3 or 4, characterized in that: The second lens is a plano-convex lens, with the convex surface of the plano-convex lens facing the light source.

6. The zoom lighting module according to claim 5, characterized in that: The zoom assembly includes a lens barrel, one end of which is connected to the housing of the light source. The first lens is disposed at the other end of the lens barrel, and the second lens is slidably mounted inside the lens barrel via a mounting structure. The second lens, the first lens, the lens barrel, and the emitted light from the light source are coaxial. The driving device is disposed on the lens barrel and is used to drive the second lens to move between the first lens and the light source.

7. The zoom lighting module according to claim 6, characterized in that: The mounting structure is a mounting cylinder, which is slidably fitted inside the lens barrel. A first sliding rod is provided on the inner wall of the lens barrel along its own axial direction, and a through hole is provided on the side wall of the mounting cylinder to be slidably connected to the first sliding rod. The driving device includes a driving bracket, a driving motor, a lead screw, a second slide rod, and a slider. A through groove is formed on the side wall of the lens barrel along its axial direction. The driving bracket is fixed to the lens barrel and embedded in the through groove. The driving motor and the second slide rod are mounted on the driving bracket. Both the lead screw and the second slide rod are parallel to the axis of the lens barrel. The lead screw is threadedly connected to the slider, and the second slide rod is slidably connected to the slider. One end of the lead screw is rotatably connected to the driving bracket, and the other end is coaxially connected to the output shaft of the driving motor. The driving motor drives the lead screw to rotate, thereby causing the slider to slide along the axial direction of the lens barrel. The slider is connected to the mounting cylinder, thereby causing the mounting cylinder to slide relative to the lens barrel along its own axial direction.

8. The zoom lighting module according to claim 7, characterized in that: The outer periphery of the end of the lens barrel on which the first lens is installed is also threadedly connected to a first pressure ring. The first pressure ring includes a first threaded connecting section and a first pressing section connected in sequence. The inner ring of the first threaded connecting section is threadedly connected to the outer ring of the lens barrel. The first pressing section is provided with a first pressing step. The first pressing step can press the first lens into the inside of the lens barrel. The mounting cylinder has a second pressure ring threadedly connected to the outer periphery of one end where the second lens is mounted. The second pressure ring includes a second threaded connecting section and a second pressing section connected in sequence. The inner ring of the second threaded connecting section is threadedly connected to the outer ring of the mounting cylinder. The second pressing section is provided with a second pressing step, which can press the second lens into the inside of the mounting cylinder. A waterproof structure is also provided between the first lens and the lens barrel, and between the second lens and the mounting barrel.

9. The zoom illumination module according to any one of claims 1 to 4, characterized in that: The light source is an LED light source or a laser light source.

10. A lighting device, characterized in that: It includes an adjustment mechanism and a zoom lighting module as described in any one of claims 1 to 9, wherein the adjustment mechanism is capable of adjusting the lighting angle of the zoom lighting module.

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