Illumination module capable of adjusting size of light spot and adjusting method thereof

Abstract

The invention discloses an illumination module capable of adjusting the size of a light spot and an adjusting method thereof, and relates to the technical field of illumination. The illumination module comprises a light source part, a light spot adjusting module and a lens assembly; the light source part comprises a plurality of groups of oppositely arranged light sources; the lens assembly comprises a rotational symmetry plane and a plurality of lens groups, the lens groups are arranged on the rotational symmetry plane, and each lens group comprises two lenses; the two lenses in the same lens group have the same focal length, and the two lenses in the same lens group are oppositely arranged; the focal lengths of the two lenses in different lens groups are different; the light spot adjusting module is used for dynamically adjusting light spots of the illumination module. According to the invention, the size of the light spot can be adjusted.

Description

Technical Field

[0001] The present application relates to the field of lighting technology, and in particular to a lighting module capable of adjusting the size of a light spot and an adjustment method thereof. Background Art

[0002] Lighting fixtures are widely used in various environments, including ceiling lights, spotlights, follow-spot lights, flashlights, etc. With the gradual improvement of living standards, people's demands for lighting fixtures are becoming increasingly diversified to adapt to different usage scenarios, such as improving durability, achieving accent lighting, adjusting color temperature, and adjusting the size of the light spot.

[0003] In the prior art, the spot size of a lighting fixture is usually fixed, which makes it difficult for the fixture to adjust the spot size in real time according to the distance, the illuminated object, etc., resulting in limited usage scenarios of the lighting fixture. Summary of the invention

[0004] The purpose of the present application is to provide an illumination module with adjustable light spot size and an adjustment method thereof, so as to adjust the light spot size of the illumination module by a dynamic adjustment method to meet the lighting needs of different occasions.

[0005] To achieve the above objectives, this application provides the following solutions:

[0006] In a first aspect, the present application provides an illumination module capable of adjusting the size of a light spot, comprising:

[0007] A light source unit, a light spot adjustment module, and a lens assembly; the light source unit includes a plurality of light sources arranged relatively to each other; the lens assembly includes a rotationally symmetrical surface and a plurality of lens groups, the lens groups are arranged on the rotationally symmetrical surface, and each lens group includes two lenses; the two lenses in the same lens group have the same focal length, and the two lenses in the same lens group are arranged relatively to each other; the two lenses in different lens groups have different focal lengths; the light spot adjustment module is used to dynamically adjust the light spot of the illumination module.

[0008] Optionally, the dynamic adjustment is an electric drive adjustment method or a mechanical drive adjustment method.

[0009] Optionally, when the dynamic adjustment is a mechanical drive adjustment method, the light spot adjustment module is a driving component; the driving component is used to change the relative positions of different lens groups and the light source by rotation so that the light source corresponds to the set lens group one by one.

[0010] Optionally, the driving component is also used to change the axial distance between the lens assembly and the light source portion.

[0011] Optionally, when the dynamic adjustment is a mechanically driven adjustment method, the number of light source groups provided in the light source unit is smaller than the number of lens groups in the lens assembly.

[0012] Optionally, when the dynamic adjustment is an electric drive adjustment mode, the light spot adjustment module is a light source driving circuit; the light source driving circuit is used to control the switching of different groups of light sources.

[0013] Optionally, the light spot adjustment module further includes a driving component; the driving component is used to change the axial distance between the lens assembly and the light source part.

[0014] Optionally, when the dynamic adjustment is an electrically driven adjustment mode, the number of light source groups provided in the light source unit is the same as the number of lens groups in the lens assembly.

[0015] Optionally, the light source is a dual-color temperature light source; the dual-color temperature light source includes a cold light source and a warm light source.

[0016] Optionally, the light spot adjustment module is a driving component for changing the axial distance between the lens assembly and the light source part.

[0017] In a second aspect, the present application provides an adjustment method of an illumination module based on an adjustable light spot size, comprising:

[0018] Get the spot size requirement instruction.

[0019] According to the light spot size requirement instruction, the light spot of the lighting module is dynamically adjusted to obtain the required light spot; the dynamic adjustment is an electric drive adjustment method or a mechanical drive adjustment method.

[0020] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0021] The present application provides an illumination module with adjustable spot size and an adjustment method thereof, the illumination module comprises a light source unit, a spot adjustment module, and a lens assembly; the light source unit comprises a plurality of light sources arranged relatively to each other; the lens assembly comprises a rotationally symmetrical surface and a plurality of lens groups, the lens groups are arranged on the rotationally symmetrical surface, and each lens group comprises two lenses; the two lenses in the same lens group have the same focal length, and the two lenses in the same lens group are arranged relatively to each other; the two lenses in different lens groups have different focal lengths; the spot adjustment module is used to dynamically adjust the spot of the illumination module. The present application can adjust the spot size by an electric drive adjustment method or a mechanical drive adjustment method to meet the lighting needs of different occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A structural diagram of an illumination module with adjustable light spot size provided in one embodiment of the present application.

[0024] Figure 2 This is a schematic diagram of a first lens assembly provided in an embodiment of the present application when it is disposed on a dual-color temperature light source.

[0025] Figure 3 A first optical path diagram provided in accordance with an embodiment of the present application.

[0026] Figure 4 This is a schematic diagram of a second lens assembly provided in an embodiment of the present application when it is disposed on a dual-color temperature light source.

[0027] Figure 5 A second optical path diagram provided in an embodiment of the present application.

[0028] Figure 6 A schematic diagram of a lens assembly based on a Fresnel lens provided in one embodiment of the present application.

[0029] Figure 7 This is a schematic diagram of the lighting module structure when the number of dual-color temperature light sources and lens groups is the same as that of an embodiment of the present application.

[0030] Figure 8 This is a schematic structural diagram of a light source and a lens assembly provided in an embodiment of the present application when they have a first distance h1.

[0031] Fig. 9 A schematic diagram of the maximum light spot generated by the lens group provided in one embodiment of the present application.

[0032] Fig.10 A schematic diagram of the structure of a light source and a lens assembly provided in an embodiment of the present application when the light source and the lens assembly have a second distance h2.

[0033] Fig.11 A schematic diagram of the minimum light spot generated by a lens group provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Embodiment 1

[0037] like Figure 1 As shown, this embodiment provides an illumination module with adjustable light spot size, including:

[0038] A light source unit, a light spot adjustment module, and a lens assembly; the light source unit includes a plurality of light sources arranged relatively to each other; the lens assembly includes a rotationally symmetrical surface and a plurality of lens groups, the lens groups are arranged on the rotationally symmetrical surface, and each lens group includes two lenses; the two lenses in the same lens group have the same focal length, and the two lenses in the same lens group are arranged relatively to each other; the two lenses in different lens groups have different focal lengths; the light spot adjustment module is used to dynamically adjust the light spot of the illumination module.

[0039] In some embodiments, the dynamic adjustment is an electric drive adjustment method or a mechanical drive adjustment method.

[0040] Specifically, when the dynamic adjustment is a mechanically driven adjustment method, the light spot adjustment module is a driving component; the driving component is used to change the relative positions of different lens groups and the light source by rotation so that the light source corresponds to the set lens group one by one; the number of light sources arranged in the light source part is less than the number of lens groups in the lens assembly.

[0041] Specifically, a driving component is provided to rotate the light source unit or the lens assembly 2, thereby changing the relative positions of different lens groups and the light source. Taking a group of light sources, two groups of lens groups and a rotating lens assembly 2 as an example, Figure 2 As shown, in the first position, the first lens group cover is set on the light source. The light emitted by the light source is refracted by the two lenses of the first lens group 2-1 and scattered at a first set angle, forming an illumination spot with a first set size at a position far away from the lens assembly 2. The first light path diagram is shown in Figure 3 As shown. Figure 4 As shown, the lens assembly is rotated to the second position, and the second lens group 2-2 is covered on the light source. The light emitted by the light source is refracted by the two lenses of the second lens group 2-2 and scattered at a second set angle, forming an illumination spot with a second set size at a position far away from the lens assembly 2. The second light path diagram is shown in FIG. Figure 5 shown.

[0042] Wherein, in some embodiments, Figure 1As shown, the light source can be a single-color temperature light source or a dual-color temperature light source, and the only difference is whether the color temperature of the light spot is variable; taking the light source as a dual-color temperature light source as an example, the dual-color temperature light source includes a cold light source 1-1 and a warm light source 1-2, and is symmetrically arranged about the central axis AA, and the light source emits light of different color temperatures by changing the driving current of the dual-color temperature light source. A lens assembly 2 is provided on the outer cover of the dual-color temperature light source, and the lens assembly 2 includes a rotationally symmetrical surface, and a plurality of lens groups are arranged on the rotationally symmetrical surface, each lens group includes two lenses, and the two lenses of the same lens group are completely the same or at least have the same focal length, and the focal lengths of different lens groups are different. The two lenses are arranged oppositely, and the spacing with the dual-color temperature light source is equal, so that the two lenses can be respectively covered on the cold light source 1-1 and the warm light source 1-2. It should be noted that since the spacing of the dual-color temperature light source is extremely small relative to the distance between the dual-color temperature light source and the light spot, the non-overlapping part (edge) of the emitted light of the dual-color temperature light source can be ignored, forming a uniform light spot color temperature, which can meet the needs. The number of lens groups can be adjusted according to the requirements of the light spot color temperature or size. The more groups are set, the larger the adjustable range of the light spot is. Figure 1 As shown, six lens groups are set to form light spots of multiple different color temperatures and six different sizes.

[0043] Among them, in some embodiments, in order to reduce the thickness of the module, the lens is preferably a Fresnel lens, and the Fresnel lens has different tooth shapes, tooth depths, tooth spacings, and focal lengths, and can be freely designed according to needs, such as Figure 6 shown.

[0044] Specifically, two Fresnel lenses in the same lens group are completely the same or have the same focal length. Two Fresnel lenses in different lens groups have different tooth shapes, tooth depths or tooth spacings and different focal lengths.

[0045] In some other embodiments, such as Figure 7 As shown, when the dynamic adjustment is an electric drive adjustment mode, the light spot adjustment module is a light source driving circuit; the light source driving circuit is used to control the opening and closing of different groups of light sources, the number of light sources arranged in the light source part of the lighting module is the same as the number of lens groups in the lens assembly, and each light source corresponds to each lens. The light spot adjustment module also includes a driving component; the driving component is used to change the axial spacing between the lens assembly and the light source part.

[0046] Specifically, still taking the dual-color temperature light source as an example, a plurality of groups of dual-color temperature light sources with different color temperatures are arranged in the illumination module with adjustable light spot size, and the number of dual-color temperature light sources is the same as the number of lens groups, so that the light sources correspond to the lenses one by one, such as Figure 7As shown. By controlling the opening and closing of different groups of dual-color temperature light sources through the light source driving circuit, light spots of different color temperatures and sizes can be formed. The cold and warm light sources are arranged relative to each other, and the specific arrangement positions are not limited, as long as each group of light sources includes a cold light source and a warm light source. For example, the cold light sources 1-1 can be all arranged on one side of the central axis AA, and the warm light sources 1-2 can be all arranged on the other side of the central axis AA. The cold light sources 1-1 and the warm light sources 1-2 can also be arranged alternately along the rotational symmetry plane of the lens assembly.

[0047] Among them, in some embodiments, under the mechanical drive adjustment mode and the electric drive adjustment mode, the driving component can drive the light source unit or the lens assembly to change its axial distance, which can be specifically as follows:

[0048] In order to achieve infinite variation of the spot size, that is, continuous variation of the light emission angle within a certain range, the light source unit or the lens assembly 2 can also be moved axially along the light emission direction to change the axial distance between the light source unit and the lens assembly 2. Taking the moving lens assembly 2 as an example, Figure 8 As shown, at this time, the light source and the lens assembly 2 have a first distance h1, which is the set shortest distance. After the light emitted by the light source is refracted by the two lenses of the corresponding lens group, the maximum light spot that can be formed by the corresponding lens group is formed at a position far away from the lens assembly 2, as shown in FIG. Fig. 9 As shown. Fig.10 As shown, at this time, the dual color temperature light source and the lens assembly 2 have a second distance h2, which is the set maximum distance. After the light emitted by the light source is refracted by the two lenses of the corresponding lens group, the smallest light spot that can be formed by the corresponding lens group is formed at a position far away from the lens assembly 2, as shown in FIG. Fig.11 As shown. As the axial distance between the light source and the lens assembly 2 continuously changes from the first distance h1 to the second distance h2, the light emission angle continuously changes within a certain range, and a series of light spots of different sizes can be formed. Due to the different focal lengths of different lens groups, the minimum and maximum light spots formed are different in size. Through the cooperation of different lens groups and light sources, the infinite change of the light spot size is finally achieved.

[0049] Embodiment 2

[0050] This embodiment provides an adjustment method of an illumination module based on an adjustable light spot size, which includes:

[0051] Get the spot size requirement instruction.

[0052] According to the light spot size requirement instruction, the light spot of the lighting module is dynamically adjusted to obtain the required light spot; the dynamic adjustment is an electric drive adjustment method or a mechanical drive adjustment method.

[0053] In summary, this application has the following technical effects:

[0054] 1) By adjusting the axial distance between the light source and the lens assembly, and the relative position of different lens groups and the light source, the size of the illumination spot can be infinitely changed.

[0055] 2) By using only a pair of dual color temperature light sources, multiple light spot effects of different color temperatures and sizes can be created.

[0056] 3) In the process of adjusting the color temperature, the size of the light spot can also be adjusted synchronously. This is particularly prominent because it allows continuous and infinite changes in the size of the light spot, thus providing users with great flexibility and creative space.

[0057] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A lighting module with adjustable light spot size, characterized in that: The illumination module with adjustable light spot size comprises: a light source unit, a light spot adjustment module, and a lens assembly; the light source unit comprises a plurality of groups of light sources arranged relatively to each other; the lens assembly comprises a rotationally symmetrical surface and a plurality of lens groups, the lens groups are arranged on the rotationally symmetrical surface, and each lens group comprises two lenses; the two lenses in the same lens group have the same focal length, and the two lenses in the same lens group are arranged relatively to each other; the two lenses in different lens groups have different focal lengths; the light spot adjustment module is used to dynamically adjust the light spot of the illumination module.

2. The lighting module with adjustable light spot size according to claim 1, characterized in that: The dynamic adjustment is an electric drive adjustment method or a mechanical drive adjustment method.

3. The lighting module with adjustable light spot size according to claim 2, characterized in that: When the dynamic adjustment is a mechanical drive adjustment method, the light spot adjustment module is a driving component; the driving component is used to change the relative positions of different lens groups and light sources by rotation, so that the light source corresponds to the set lens group one by one.

4. The lighting module with adjustable light spot size according to claim 3, characterized in that: The driving component is also used to change the axial distance between the lens assembly and the light source part.

5. The lighting module with adjustable light spot size according to claim 2, characterized in that: When the dynamic adjustment is a mechanically driven adjustment method, the number of light sources provided in the light source unit is smaller than the number of lens groups in the lens assembly.

6. The lighting module with adjustable light spot size according to claim 2, characterized in that: When the dynamic adjustment is an electric drive adjustment mode, the light spot adjustment module is a light source driving circuit; the light source driving circuit is used to control the switching of different groups of light sources.

7. The lighting module with adjustable light spot size according to claim 6, characterized in that: The light spot adjustment module further includes a driving component; the driving component is used to change the axial distance between the lens assembly and the light source part.

8. The lighting module with adjustable light spot size according to claim 2, characterized in that: When the dynamic adjustment is an electric drive adjustment mode, the number of light source groups provided in the light source unit is the same as the number of lens groups in the lens assembly.

9. The lighting module with adjustable light spot size according to claim 1, characterized in that: The light source is a dual-color temperature light source; the dual-color temperature light source includes a cold light source and a warm light source.

10. A method for adjusting an illumination module capable of adjusting the light spot size according to any one of claims 1 to 9, characterized in that: include: Get the spot size requirement instruction; According to the light spot size requirement instruction, dynamically adjust the light spot of the lighting module to obtain the required light spot; The dynamic adjustment is an electric drive adjustment method or a mechanical drive adjustment method.

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