CN215372126U - Light control device and lighting system - Google Patents

Abstract

The utility model discloses a light control device and an illumination system. The light control device comprises a light reflection cup and a light source, the light reflection cup comprises a free-form surface reflecting surface, a light outlet surface of the light source faces the free-form surface reflecting surface, the free-form surface reflecting surface is used for reflecting light emitted by the light source to a preset illuminated surface, a light spot is formed on the preset illuminated surface, the free-form surface reflecting surface comprises at least two reflecting areas, the preset illuminated surface comprises at least two illuminated areas, the at least two reflecting areas correspond to the at least two illuminated areas one to one, and each reflecting area is used for reflecting the light emitted by the light source to the corresponding illuminated area. According to the light control device and the illumination system provided by the utility model, the at least two reflection areas are arranged to reflect the light rays emitted by the light source to the corresponding illuminated areas, so that light spots are formed in the at least two illuminated areas, the requirement of an illumination range is met, the inclination angle of the light control device does not need to be adjusted, and the illumination effect is improved.

Description

Light control device and lighting system

Technical Field

The embodiment of the utility model relates to the technical field of illumination, in particular to a light control device and an illumination system.

Background

Because Light Emitting Diodes (LEDs) have many advantages of small size, low power consumption, long life, high brightness, low heat generation, robustness, etc., they are increasingly used in the field of illumination.

The existing lighting lamp mostly adopts a direct projection mode, the lighting range is only the wall surface, when the ground or specific objects on the wall need to be irradiated, the inclination angle of the lighting lamp can be only adjusted, and the inclination angle of the lighting lamp can cause uneven brightness of the wall surface, the irradiated objects and the ground, so that discomfort of human eyes is easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a light control device and an illumination system, which can meet the requirement of an illumination range and improve the illumination effect.

In a first aspect, an embodiment of the present invention provides a light control device, including:

a light reflecting cup and a light source;

the light reflecting cup comprises a free-form surface reflecting surface, the light emitting surface of the light source faces the free-form surface reflecting surface, and the optical axis of the light source is perpendicular to the central axis of the light reflecting cup;

the free-form surface reflecting surface is used for reflecting the light rays emitted by the light source to a preset illuminated surface and forming light spots on the preset illuminated surface;

the free-form surface reflecting surface comprises at least two reflecting areas, the preset illuminated surface comprises at least two illuminated areas, the at least two reflecting areas correspond to the at least two illuminated areas one to one, and each reflecting area is used for reflecting light rays emitted by the light source to the corresponding illuminated areas.

Optionally, the at least two reflection regions include a first reflection region and a second reflection region, and the at least two illuminated regions include a first illuminated region and a second illuminated region; the first reflection area is used for reflecting the light rays emitted by the light source to the first illuminated area, and the second reflection area is used for reflecting the light rays emitted by the light source to the second illuminated area;

the first reflection region and the second reflection region are arranged along a first direction, the first illuminated region and the second illuminated region are arranged along a second direction, and the first direction and the second direction are both parallel to the extending direction of the central axis of the light reflection cup.

Optionally, the first direction is opposite to the second direction.

Optionally, the length of the first illuminated region along the third direction is D1, and the length of the second illuminated region along the third direction is D2, where D1 is D2, and the third direction is perpendicular to the second direction.

Optionally, at least two of the reflection regions further include a third reflection region, at least two of the illuminated regions further include a third illuminated region, and the third reflection region reflects the light emitted from the light source to the third illuminated region 23;

the first illuminated area and the second illuminated area are located in the same plane, and the plane where the second illuminated area is located and the plane where the third illuminated area is located intersect.

Optionally, the light emitting surface of the light source includes N sub light emitting surfaces, the free-form surface reflecting surface includes N sub reflecting surfaces, the N sub light emitting surfaces correspond to the N sub reflecting surfaces one to one, and each sub reflecting surface is configured to reflect light emitted from the corresponding sub light emitting surface;

the N sub light-emitting surfaces comprise N1 first sub light-emitting surfaces and N2 second sub light-emitting surfaces, the N sub reflecting surfaces comprise N1 first sub reflecting surfaces and N2 second sub reflecting surfaces, the N1 first sub reflecting surfaces are located in the first reflecting area, and the N2 second sub reflecting surfaces are located in the second reflecting area; the first illuminated area comprises N1 first sub illuminated surfaces, and the second illuminated area comprises N2 second sub illuminated surfaces;

the N1 first sub light-emitting surfaces correspond to the N1 first sub reflection surfaces one by one, the N1 first sub reflection surfaces correspond to the N1 first sub illuminated surfaces one by one, and light emitted from each first sub light-emitting surface is reflected to the corresponding first sub illuminated surface through the corresponding first sub reflection surface;

the N2 second sub light-emitting surfaces correspond to the N2 second sub reflection surfaces one by one, the N2 second sub reflection surfaces correspond to the N2 second sub illuminated surfaces one by one, and light emitted from each second sub light-emitting surface is reflected to the corresponding second sub illuminated surface through the corresponding second sub reflection surface;

wherein N, N1 and N2 are both positive integers greater than 1.

Optionally, the luminous fluxes of the sub light emitting surfaces are equal;

the energy ratio of the first illuminated region to the second illuminated region is A: B, and N1: N2 is A: B.

Optionally, the area of each of the first illuminated sub-surfaces is equal, and the area of each of the second illuminated sub-surfaces is equal.

Optionally, the first sub-reflecting surface includes a plurality of first boundary vertices, the first sub-illuminated surface includes a plurality of second boundary vertices, the first boundary vertices and the second boundary vertices are in one-to-one correspondence, and the first sub-reflecting surface satisfies:

wherein the content of the first and second substances,

is the vector of the incident light from the light source to the first boundary vertex,

the emergent light vector from the first boundary vertex to the corresponding second boundary vertex,

the normal vector of the free-form surface reflecting surface at the vertex of the first boundary is taken as the vector;

the second sub-reflecting surface comprises a plurality of third boundary vertexes, the second sub-illuminated surface comprises a plurality of fourth boundary vertexes, the third boundary vertexes correspond to the fourth boundary vertexes in a one-to-one mode, and the second sub-reflecting surface satisfies the following conditions:

wherein the content of the first and second substances,

is the vector of the incident light from the light source to the vertex of the third boundary,

the emergent light vector from the third boundary vertex to the corresponding fourth boundary vertex,

and the normal vector of the free-form surface reflecting surface at the vertex of the third boundary is shown.

In a second aspect, embodiments of the present invention further provide a lighting system, including any of the light control devices described in the first aspect.

According to the light control device provided by the embodiment of the utility model, the free-form surface reflecting surface comprises at least two reflecting areas, the preset illuminated surface comprises at least two illuminated areas, the at least two reflecting areas correspond to the at least two illuminated areas one by one, and each reflecting area reflects light rays emitted by the light source to the corresponding illuminated area, so that light spots are formed in the at least two illuminated areas, the requirement for illuminating a plurality of specific articles on the ground and/or on a wall at the same time is met.

Drawings

Fig. 1 is a schematic structural diagram of a light control device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another light control device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a light emitting surface of a light source according to an embodiment of the present invention;

fig. 4 is a schematic partial structure diagram of a light control device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first illuminated area according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another first illuminated region according to an embodiment of the present invention;

fig. 7 is a schematic partial cross-sectional view illustrating a light control device according to an embodiment of the present invention;

FIG. 8 is a schematic partial cross-sectional view of another light control device according to an embodiment of the present invention;

fig. 9 is a schematic cross-sectional view of a light control device according to an embodiment of the present invention;

fig. 10 is a schematic cross-sectional view of another light control device according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Fig. 1 is a schematic structural diagram of a light control device according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of another light control device according to an embodiment of the present invention, as shown in fig. 1 and fig. 2, the light control device according to an embodiment of the present invention includes a reflective cup 10 and a light source 11, the reflective cup 10 includes a free-form surface reflective surface 101, a light exit surface of the light source 11 faces the free-form surface reflective surface 101, and an optical axis 111 of the light source 11 is perpendicular to a central axis 102 of the reflective cup 10. The free-form surface reflecting surface 101 is used for reflecting light rays emitted by the light source 11 to a preset illuminated surface 20 and forming light spots on the preset illuminated surface 20, the free-form surface reflecting surface 101 comprises at least two reflecting areas, the preset illuminated surface 20 comprises at least two illuminated areas, the at least two reflecting areas are in one-to-one correspondence with the at least two illuminated areas, and each reflecting area is used for reflecting light rays emitted by the light source 11 to the corresponding illuminated area.

Specifically, the inner side wall of the reflective cup 10 is the free-form-surface reflective surface 101, the light-emitting surface of the light source 11 faces the free-form-surface reflective surface 101, and the optical axis 111 of the light source 11 is perpendicular to the central axis 102 of the reflective cup 10, so that the light emitted by the light source 11 is incident on the free-form-surface reflective surface 101, and the reflective cup 10 can control the emitting direction of all the light emitted by the light source 11, has high light control capability, and is beneficial to improving the optical utilization rate.

The free-form surface reflecting surface 101 is determined by parameters of the light emitting surface of the light source 11 and output parameters of the preset illuminated surface 20, so that light emitted by the light source 11 is reflected to the preset illuminated surface 20 through the free-form surface reflecting surface 101 to form light spots according to the illumination requirement. Meanwhile, by adopting the light control device provided by the embodiment of the utility model, the lighting requirements of the at least two illuminated areas can be realized without adjusting the inclination angle of the light control device, the problem of uneven brightness caused by the inclination of a lamp is solved while the lighting range requirements are met, and the lighting effect is improved.

The Light source 11 may be a Light Emitting Diode (LED), and the LED has the advantages of small size, low power consumption, long service life, high brightness, low heat generation, and high durability. In other embodiments, any other light source may be used, and those skilled in the art may set the light source according to actual needs.

Moreover, the light control device may further include a light source fixing structure 12, one end of the light source fixing structure 12 is fixed to one end of the reflective cup 10, the other end of the light source fixing structure 12 extends above the free-form surface reflective surface 101, and one side of the light source fixing structure 12 facing the free-form surface reflective surface 101 is used for fixing the light source 11, and a light emitting surface of the light source 11 faces the free-form surface reflective surface 101. The light source fixing structure 12 may be integrated with a driving circuit of the light source 11, for example, the light source fixing structure 12 is a circuit board, and the circuit board covers a partial area of the free-form surface 101 in a direction perpendicular to a plane of the circuit board.

According to the light control device provided by the embodiment of the utility model, the free-form surface reflecting surface 101 comprises at least two reflecting areas, the preset illuminated surface 20 comprises at least two illuminated areas, the at least two reflecting areas correspond to the at least two illuminated areas one by one, and each reflecting area reflects light rays emitted by the light source 11 to the corresponding illuminated area, so that light spots are formed in the at least two illuminated areas, the requirement for illuminating a plurality of specific articles on the ground and/or wall at the same time is met.

With continued reference to fig. 1 and 2, optionally, the at least two reflection regions include a first reflection region 31 and a second reflection region 32, the at least two illuminated regions include a first illuminated region 21 and a second illuminated region 22, the first reflection region 31 is configured to reflect the light emitted from the light source 11 to the first illuminated region 21, and the second reflection region 32 is configured to reflect the light emitted from the light source 11 to the second illuminated region 22. The first reflection region 31 and the second reflection region 32 are arranged along a first direction F1, and the first illuminated region 21 and the second illuminated region 22 are arranged along a second direction F2, wherein the first direction F1 and the second direction F2 are both parallel to the extending direction of the central axis 102 of the reflector cup 10.

As shown in fig. 1 and 2, the first reflection region 31 reflects the light emitted from the light source 11 to the first illuminated region 21, the second reflection region 32 reflects the light emitted from the light source 11 to the second illuminated region 22, and the free-form surface reflection surface 101 is determined by setting the arrangement direction of the first reflection region 31 and the second reflection region 32 and the arrangement direction of the first illuminated region 21 and the second illuminated region 22 to be parallel to the extending direction of the central axis 102 of the light-reflecting cup 10, so that the parameters of the light-emitting surface of the light source 11 and the output parameters of the preset illuminated surface 20 are calculated, and the structure of the free-form surface reflection surface 101 is easier to implement.

It should be noted that, the light control device provided in the embodiment of the present invention only takes as an example that at least two illuminated regions include the first illuminated region 21 and the second illuminated region 22, in other embodiments, more illuminated regions may be provided, so as to implement illumination of more specific articles, when more illuminated regions are provided, the illuminated regions may be sequentially arranged along the second direction F2, and the corresponding reflective regions are arranged along the first direction F1, so as to facilitate simplifying the partitioning process of the free-form surface reflective surface 101, and simplifying the calculation process of determining the free-form surface reflective surface 101 by the parameters of the light exit surface of the light source 11 and the output parameters of the illuminated regions, so that the structure of the free-form surface reflective surface 101 is easier to implement.

The first direction F1 and the second direction F2 may be the same or opposite.

Exemplarily, as shown in fig. 1, taking the case that the first direction F1 and the second direction F2 may be the same as each other, in fig. 1, the first reflective region 31 and the second reflective region 32 are arranged from top to bottom, the first illuminated region 21 and the second illuminated region 22 are also arranged from top to bottom, the first reflective region 31 reflects the light emitted from the light source 11 to the first illuminated region 21, and the second reflective region 32 reflects the light emitted from the light source 11 to the second illuminated region 22, so as to achieve the illumination requirements of the first illuminated region 21 and the second illuminated region 22.

With continued reference to fig. 2, optionally, the first direction F1 is opposite the second direction F2.

Specifically, in fig. 1, the first reflection area 31 and the second reflection area 32 are arranged from bottom to top, the first illuminated area 21 and the second illuminated area 22 are arranged from top to bottom, the first reflection area 31 reflects the light emitted by the light source 11 to the first illuminated area 21, and the second reflection area 32 reflects the light emitted by the light source 11 to the second illuminated area 22, so as to meet the illumination requirements of the first illuminated area 21 and the second illuminated area 22. The light is reflected to the illuminated area close to the lower part by the reflection area close to the upper part, and the light is reflected to the illuminated area close to the upper part by the reflection area close to the lower part, so that partial light can be prevented from being shielded by the light source fixing structure 12, and the utilization rate of the light source is improved.

With continued reference to fig. 2, optionally, the length of the first illuminated region 21 along the third direction F3 is D1, and the length of the second illuminated region 22 along the third direction F3 is D2, where D1 is D2, and the third direction F3 is perpendicular to the second direction F2.

As shown in fig. 2, the widths of the first illuminated region 21 and the second illuminated region 22 are set to be the same, which helps to simplify the calculation process of determining the free-form-surface reflecting surface 101 by the parameters of the light emitting surface of the light source 11 and the output parameters of the first illuminated region 21 and the second illuminated region 22, and makes the structure of the free-form-surface reflecting surface 101 easier to implement.

Similarly, in other embodiments, if more illuminated areas are provided, the widths of the illuminated areas may be the same, which helps to simplify the calculation process for determining the free-form-surface reflecting surface 101 by the parameters of the light emitting surface of the light source 11 and the output parameters of the first illuminated area 21 and the second illuminated area 22, and makes the structure of the free-form-surface reflecting surface 101 easier to implement.

With continued reference to fig. 2, optionally, the at least two reflection regions further include a third reflection region 33, the at least two illuminated regions further include a third illuminated region 23, the third reflection region 33 reflects the light emitted from the light source 11 to the third illuminated region 23, the first illuminated region 21 and the second illuminated region 22 are located in the same plane, and the plane where the second illuminated region 22 is located intersects with the plane where the third illuminated region 23 is located.

By arranging the intersection of the plane of the third illuminated area 23 and the plane of the second illuminated area 22, the illumination requirements of articles at different angles can be met simultaneously, and therefore a more flexible illumination effect is achieved.

For example, as shown in fig. 2, taking the plane of the second illuminated area 22 and the plane of the third illuminated area 23 as being perpendicular, the first illuminated area 21 and the second illuminated area 22 are both located on a wall surface, and the third illuminated area 23 is located on a ground surface, so that the first illuminated area 21 serves as a non-article illuminated area of the wall surface, the second illuminated area 22 serves as an article illuminated area of the wall surface, and the third illuminated area 23 serves as an article illuminated area of the ground surface, thereby simultaneously displaying and realizing the illumination display of specific articles on the wall surface, the ground surface, and the ground surface or the wall surface.

Fig. 3 is a schematic structural diagram of a light emitting surface of a light source according to an embodiment of the present invention, as shown in fig. 3, optionally, the light emitting surface 40 of the light source 11 includes N sub light emitting surfaces 41, the free-form surface reflecting surface 101 includes N sub reflecting surfaces 50, the N sub light emitting surfaces 40 correspond to the N sub reflecting surfaces one to one, and each sub reflecting surface is configured to reflect light emitted from the corresponding sub light emitting surface 41. The N sub light-emitting surfaces 41 include N1 first sub light-emitting surfaces and N2 second sub light-emitting surfaces, the N sub reflecting surfaces include N1 first sub reflecting surfaces and N2 second sub reflecting surfaces, the N1 first sub reflecting surfaces are located in the first reflecting area 31, the N2 second sub reflecting surfaces are located in the second reflecting area 32, the first illuminated area 21 includes N1 first sub illuminated surfaces, and the second illuminated area 22 includes N2 second sub illuminated surfaces. The N1 first sub light-emitting surfaces correspond to the N1 first sub reflection surfaces one by one, the N1 first sub reflection surfaces correspond to the N1 first sub illuminated surfaces one by one, and light emitted by each first sub light-emitting surface is reflected to the corresponding first sub illuminated surface through the corresponding first sub reflection surface; the N2 second sub light-emitting surfaces correspond to the N2 second sub reflection surfaces one by one, the N2 second sub reflection surfaces correspond to the N2 second sub illuminated surfaces one by one, and light emitted by each second sub light-emitting surface is reflected to the corresponding second sub illuminated surface through the corresponding second sub reflection surface; wherein N, N1 and N2 are both positive integers greater than 1.

Where N is a positive integer greater than 1, it can be understood that if the number of the divided parts of the light emitting surface 40 of the light source 11, the preset illuminated surface 20 and the free-form surface reflecting surface 101 is too small, the precision requirement may not be met, and the more the divided parts are, the higher the precision is theoretically, however, the actual processing may not meet the requirement, in this embodiment, N may be designed to be 20 ≤ or less than 2000. In other embodiments, for example, when the requirement on the illumination precision of the light beam is low, N may also be designed to be less than 20, so as to reduce the calculation and processing difficulty; when the requirement on the precision of light beam illumination is high, the numerical value of N can be designed to be larger than 2000 so as to process a finer free-form surface and meet the illumination requirements of some special fields.

Fig. 4 is a schematic partial structure diagram of a light control device according to an embodiment of the present invention, as shown in fig. 3 and 4, exemplarily, a light emitting surface 40 of a light source 11 includes N light emitting sub-surfaces 41, the N light emitting sub-surfaces 41 includes N1 first light emitting sub-surfaces, a free-form surface reflecting surface 101 includes N light reflecting sub-surfaces, the N light reflecting sub-surfaces divide N1 first light reflecting sub-surfaces 50, the N1 first light reflecting sub-surfaces 50 are located in a first reflecting region 31, the first illuminated region 21 divides N1 first illuminated sub-surfaces 211, the N1 first light emitting sub-surfaces correspond to the N1 first light reflecting sub-surfaces 50 one to one, the N1 first light reflecting sub-surfaces 50 correspond to the N1 first illuminated sub-surfaces 211 one to one, and light emitted from each first light emitting sub-surface is reflected to the corresponding first illuminated sub-surfaces 211.

Similarly, the N sub light-emitting surfaces 41 include N2 second sub light-emitting surfaces, the N sub light-reflecting surfaces divide into N2 second sub light-reflecting surfaces, the N2 second sub light-reflecting surfaces are located in the second reflecting region 32, the second illuminated region 22 divides into N2 second sub illuminated surfaces, the N2 second sub light-emitting surfaces correspond to the N2 second sub light-reflecting surfaces one to one, the N2 second sub light-reflecting surfaces correspond to the N2 second sub illuminated surfaces one to one, and light emitted from each second sub light-emitting surface is reflected to the corresponding second sub illuminated surface through the corresponding second sub light-reflecting surface, which is not described herein again.

Optionally, the luminous fluxes of the sub light emitting surfaces 41 are equal, and the energy ratio between the first illuminated region 21 and the second illuminated region 22 is a: B, and N1: N2 is a: B.

Specifically, referring to fig. 3, the light emitting surface 40 of the light source 11 may be a spherical surface, and the spherical surface is divided into N sub light emitting surfaces 41 according to the longitude and latitude lines. Regarding the light source 11 as a lambertian light source, the light intensity provided by the sub-light exit surface 41 is such that

i＝0,1,…,N-1,θ₀＝0,θ₉₀The light flux of each sub light exit surface 41 can be guaranteed to be equal to 90 °. As shown in FIG. 3, the optical axis of the light source 11 is represented by the Z-axis, the center of the light source 11 is represented by the origin O, and θ_iAnd theta_i+1Respectively representing the starting angle and the ending angle of the ith sub light-emitting surface 41, wherein the starting angle of the sub light-emitting surface 41 is the included angle between the connecting line between the starting weft line and the origin O of the sub light-emitting surface 41 and the Z axis, the ending angle of the sub light-emitting surface 41 is the included angle between the connecting line between the ending weft line and the origin O of the sub light-emitting surface 41 and the Z axis, and I is₀Indicating the peak intensity of the light exiting surface 40, which is the intensity of the light source 11 along the Z-axis.

With continued reference to fig. 2-4, the energy ratio of the first illuminated area 21 and the second illuminated area 22 is preset as a: B according to the lighting requirements of the user, wherein the energy ratio of the first illuminated area 21 and the second illuminated area 22 is the ratio of the light energy received by the first illuminated area 21 to the light energy received by the second illuminated area 22. Since the luminous fluxes of the sub light emitting surfaces 41 are equal, and each sub reflection surface is used for reflecting the light emitted from the corresponding sub light emitting surface 41, the light energy reflected by each sub reflection surface is equal, by setting N1: N2 to a: B, the light emitted from the N1 first sub light emitting surfaces is reflected to the first illuminated area 21 by the N1 first sub reflection surfaces 50, and the light emitted from the N2 second sub light emitting surfaces is reflected to the second illuminated area 22 by the corresponding N2 second sub reflection surfaces, so that the light emitted from the light source 11 is distributed to the first illuminated area 21 and the second illuminated area 22 according to the preset energy ratio a: B, and the illumination requirement of the user is met.

In other embodiments, if more illuminated areas are set, the energy ratio of the illuminated areas may be preset according to the lighting requirement of the user, then the free-form surface reflecting surface 101 is divided into a plurality of reflecting areas corresponding to the illuminated areas, and each reflecting area includes different numbers of sub-reflecting surfaces, so that the light emitted by the light source 11 is distributed to the illuminated areas according to the preset energy ratio, thereby realizing the lighting requirement of the user.

Illustratively, as shown in fig. 2, the preset illuminated surface 20 includes a first illuminated area 21, a second illuminated area 22 and a third illuminated area 23, the energy ratio of the first illuminated area 21, the second illuminated area 22 and the third illuminated area 23 is a: B: C, the energy ratio of the first illuminated area 21, the second illuminated area 22 and the third illuminated area 23 is preset according to the user requirement, the ratio of the a: B: C is 10%: 70%: 20%, the free-form surface reflecting surface 101 is divided into a first reflecting area 31, a second reflecting area 32 and a third reflecting area 33, the first reflecting area 31 includes N1 first sub reflecting surfaces, the second reflecting area 32 includes N2 second sub reflecting surfaces, the third reflecting area 33 includes N3 third sub reflecting surfaces, since the luminous flux of each sub light-emitting surface 41 is equal, and each sub reflecting surface is used for reflecting the light emitted from the corresponding sub light-emitting surface 41, the light energy reflected by each sub reflecting surface is equal, by setting N1: n2: n3 is 10%: 70%: 20%, and the energy ratio of the first illuminated region 21, the second illuminated region 22, and the third illuminated region 23 is a: B: C.

It should be noted that the energy ratio of the multiple illuminated regions can be arbitrarily set according to the user requirement, for example, in the above embodiment, the energy ratio a: B: C of the first illuminated region 21, the second illuminated region 22 and the third illuminated region 23 is set to 0%: 60%: 40%, and the formation of the light spot only in the second illuminated region 22 and the third illuminated region 23 is realized, which is not limited by the embodiment of the present invention.

Optionally, the area of each first sub illuminated surface is equal, and the area of each second sub illuminated surface is equal.

The luminous fluxes of the light emitting sub-surfaces 41 are equal, so that the light energy received by each first illuminated sub-surface is equal, and the areas of the illuminated sub-surfaces are equal, so that the light intensity of each first illuminated sub-surface is equal, and thus the light control device forms light spots with uniform intensity distribution in the first illuminated area 21, and the illumination effect is improved. In a similar way, the areas of the illuminated surfaces of the second sub-regions are equal, so that the light intensity of the illuminated surfaces of the second sub-regions is equal, light spots with uniform intensity distribution are formed in the second illuminated regions 22 by the light control device, and the illumination effect is improved.

Fig. 5 is a schematic structural diagram of a first illuminated area according to an embodiment of the present invention, as shown in fig. 5, optionally, the first illuminated area 21 is set to be square, N1 first sub-illuminated surfaces 211 are equally divided into M first sub-illuminated surface groups 42, a center O1 of each first sub-illuminated surface group 42 coincides with a center O1 of the first illuminated area 21, an edge of the first sub-illuminated surface group 42 is set to be square, and a side length of the first sub-illuminated surface group 42 is set to be a side length

j is 1,2, …, M, where M is a positive integer greater than or equal to 2, and the side length of the first illuminated region 21 is L.

With reference to fig. 5, taking M ═ 4 as an example, the 16 first sub illuminated surfaces 211 are equally divided into 4 first sub illuminated surface groups 42, each first sub illuminated surface group 42 includes 4 first sub illuminated surfaces 211, the center O1 of each first sub illuminated surface group 42 coincides with the center O1 of the first illuminated area 21, and the edge of the first sub illuminated surface group 42 is square. The first sub-illuminated surface group 42 has a side length of

J is 1,2, …, M, for example, as shown in fig. 5, the side length of the first sub illuminated surface group 42 closest to the center O1 is L1, J is 1,

the first sub illuminated surface group 42 adjacent to the first sub illuminated surface group 42 has a side length of L2, J2,

and so on, to ensure that the area of each first sub illuminated surface group 42 is the same, and further ensure that the area of the first sub illuminated surface 211 is the same, where L is the side length of the preset illuminated surface 20.

The dividing line may be designed to divide the M first illuminated sub-surfaces 42 together, so as to obtain N1 first illuminated sub-surfaces 211.

Continuing with fig. 5, illustratively, the dividing line 43 is designed, the dividing line 43 passes through the center O1 of the first sub illuminated surface group 42, and the first sub illuminated surface group 42 is divided together by the dividing line 26, so that each first sub illuminated surface group 42 is divided into a plurality of first sub illuminated surfaces 211 on average, and further, the M first sub illuminated surface groups 42 are divided into N1 first sub illuminated surfaces 211 on average, thereby ensuring that the area of each first sub illuminated surface 211 is the same.

It should be noted that the first illuminated region 21 is not limited to the positive direction, and before the first illuminated region 21 is divided into N1 first sub-illuminated surfaces 211, the range of the first illuminated region 21 may be determined according to different lighting scenes, and the range of the first illuminated region 21 may include a wall surface and may also include a ground surface.

For example, fig. 6 is a schematic structural diagram of another first illuminated area provided by the embodiment of the present invention, as shown in fig. 6, taking the first illuminated area 21 as an example on a wall surface, in an initial design stage, firstly defining an aspect ratio of a preset illuminated surface 21, where E: h: d, where E is a distance between the light control device 30 and the first illuminated region 21, H is a height of the first illuminated region 21, D is a width of the first illuminated region 21, for example, 1:3:1 is a longitudinally long first illuminated region 21, 1:1:2 is a transversely wide first illuminated region 21, an aspect ratio of the first illuminated region 21 may be designed according to actual requirements, such as 1:2:3 or 1:1:2, after the aspect ratio is determined, a range of the first illuminated region 21 may be determined according to a distance between the light control device 30 and the first illuminated region 21, and all light rays emitted by the light source 11 are received by the free-form surface reflecting surface 101 and reflected out to illuminate the first illuminated region 21 on the wall surface.

Similarly, the second illuminated region 22 and other illuminated regions can be defined and divided by the design method of the first illuminated region 21 provided in the above embodiments, and details thereof are not repeated herein.

Fig. 7 is a schematic partial cross-sectional structure diagram of a light control device according to an embodiment of the present invention, as shown in fig. 4 and 7, optionally, the first sub-reflecting surface 50 includes a plurality of first boundary vertices 501, the first sub-illuminated surface 211 includes a plurality of second boundary vertices 44, the first boundary vertices 501 and the second boundary vertices 44 are in one-to-one correspondence, and the first sub-reflecting surface 50 satisfies:

wherein the content of the first and second substances,

is the vector of light incident from light source 11 to first boundary vertex 501,

is the outgoing light vector from the first boundary vertex 501 to the corresponding second boundary vertex 44,

is the normal vector of the free-form surface 101 at the first boundary vertex 501.

Specifically, the first sub reflection surface 50 includes a plurality of first boundary vertices 501, the first sub illuminated surface 211 includes a plurality of second boundary vertices 44, and the first boundary vertices 501 correspond to the second boundary vertices 44 one to one, as shown in fig. 4, the first boundary vertices 501 are intersections between the first sub reflection surface 50 and common edges of the first sub reflection surfaces 50 adjacent thereto, and the second boundary vertices 44 are intersections between the first sub illuminated surface 211 and common edges of the first sub illuminated surface 211 adjacent thereto.

Illustratively, as shown in fig. 4 and 7, a first sub-reflecting surface 50 includes four first boundary vertices 501, a first sub-illuminated surface 211 also includes four second boundary vertices 44,referring to fig. 7, four first boundary vertices 501 of the first sub-reflecting surface 50 correspond to four second boundary vertices 44 of the first sub-illuminated surface 211 one by one, and each of the first boundary vertices 501 of the first sub-reflecting surface 50 is P₀-P₆The second boundary vertices 44 of the first sub illuminated surface 211 are y₀-y₆First boundary vertex P₀-P₆And the second boundary vertex y₀-y₆One-to-one correspondence is provided by arranging the first sub-reflecting surfaces 50

Is the vector of light incident from light source 11 to first boundary vertex 501,

is the outgoing light vector from the first boundary vertex 501 to the corresponding second boundary vertex 44,

is the normal vector of the free-form surface 101 at the first boundary vertex 501. For example, as shown in FIG. 7, at the first boundary vertex P₀At the position of the air compressor, the air compressor is started,

is the light source 11 to the first boundary vertex P₀Is measured in the direction of the incident light vector of (c),

is a first boundary vertex P₀To the corresponding second boundary vertex y₀The vector of the outgoing light of (a),

is a free-form surface of the reflecting surface 101 at a first boundary vertex P₀So that the light source 11 is along theta₀The light emitted in the angular direction passes through the first boundary vertex P of the first sub-reflecting surface 50₀Is reflected to the first sub-illuminated surface211 second boundary vertex y₀Similarly, the light source 11 is along θ₁The light emitted in the angular direction passes through the first boundary vertex P of the first sub-reflecting surface 50₁A second boundary vertex y reflected to the first sub illuminated surface 211₁By analogy, the light emitted from the N1 first sub light emitting surfaces is distributed to the N1 first sub illuminated surfaces 211 through the N1 first sub reflecting surfaces 50, so that the first illuminated area 21 is illuminated.

Fig. 8 is a schematic partial cross-sectional structure view of another light control device according to an embodiment of the present invention, as shown in fig. 8, N2 second sub light emitting surfaces correspond to N2 second sub reflection surfaces 51 one by one, N2 second sub reflection surfaces 51 correspond to N2 second sub illuminated surfaces 221 one by one, and light emitted from each second sub light emitting surface is reflected to the corresponding second sub illuminated surface 221 by the corresponding second sub reflection surface 51. The second sub-reflecting surface 51 comprises a plurality of third boundary vertexes, the second sub-illuminated surface 221 comprises a plurality of fourth boundary vertexes, the third boundary vertexes and the fourth boundary vertexes correspond to each other one by one, and the second sub-reflecting surface 51 satisfies the following conditions:

wherein the content of the first and second substances,

is the vector of the incident light from the light source 11 to the apex of the third boundary,

the emergent light vector from the third boundary vertex to the corresponding fourth boundary vertex,

is the normal vector of the free-form surface 101 at the vertex of the third boundary.

Specifically, the second sub reflecting surface 51 includes a plurality of third boundary vertices, the second sub illuminated surface 221 includes a plurality of fourth boundary vertices, and the third boundary vertices and the fourth boundary vertices are in one-to-one correspondence, as shown in fig. 8, the third boundary vertices are intersections between the second sub reflecting surface 51 and common edges of the second sub reflecting surfaces 51 adjacent thereto, and the fourth boundary vertices are intersections between the second sub illuminated surface 221 and common edges of the second sub illuminated surface 221 adjacent thereto.

Illustratively, as shown in fig. 8, the third boundary vertices and the fourth boundary vertices are in one-to-one correspondence, and the plurality of third boundary vertices of the second sub-reflecting surface 51 are respectively P_-1-P_-6The vertices of the fourth boundaries of the second sub-illuminated surface 221 are y_-1-y_-6The third boundary vertex P_-1-P_-6And the fourth boundary vertex y_-1-y_-6One-to-one correspondence is provided by arranging the second sub-reflecting surfaces 51 to satisfy

Is the vector of the incident light from the light source 11 to the apex of the third boundary,

the emergent light vector from the third boundary vertex to the corresponding fourth boundary vertex,

is the normal vector of the free-form surface 101 at the vertex of the third boundary. For example, as shown in FIG. 8, at the third boundary vertex P_-1At the position of the air compressor, the air compressor is started,

from the light source 11 to the third boundary vertex P_-1Is measured in the direction of the incident light vector of (c),

is a third boundary vertex P_-1To the corresponding fourth boundary vertex y_-1The vector of the outgoing light of (a),

is a free-form surface of the reflecting surface 101 at the third boundary vertex P_-1So that the light source 11 is along theta_-1The light emitted in the angular direction passes through the third boundary vertex P of the second sub-reflecting surface 51_-1Is reflected to the fourth boundary vertex y of the second sub-illuminated surface 221_-1Similarly, the light source 11 is along θ_-2The light emitted in the angular direction passes through the third boundary vertex P of the second sub-reflecting surface 51_-2Is reflected to the fourth boundary vertex y of the second sub-illuminated surface 221_-2In analogy, the light emitted from the N2 second sub light-emitting surfaces is distributed to the N2 second sub illuminated surfaces 221 through the N2 second sub reflecting surfaces 51, so that the second illuminated region 22 is illuminated.

In other embodiments, if more illuminated areas and more corresponding reflective areas are provided, the calculation process of each reflective area may refer to the design and calculation method of the first illuminated area 21 and the first reflective area 31, which is not described herein again.

It should be noted that, in the light control device provided in the embodiment of the present invention, the reflective cup 10 may adopt a full-cladding design (as shown in fig. 1), that is, the reflective cup 10 completely wraps the light source 11, so as to avoid light leakage and improve the utilization rate of the light source. In other embodiments, the reflector cup 10 may also be a semi-cladding design (as shown in fig. 2), so that the light emitted from the light source 11 can form a light spot with a large aspect ratio, thereby satisfying the illumination requirement with a large aspect ratio (> 1: 4: 2 or > 1:2: 4).

Fig. 9 is a schematic cross-sectional structure diagram of a light control device according to an embodiment of the present invention, fig. 10 is a schematic cross-sectional structure diagram of another light control device according to an embodiment of the present invention, as shown in fig. 9 and fig. 10, various shapes of the free-form surface 101 may be designed, for example, a single curved surface as shown in fig. 9, or a double curved surface as shown in fig. 10, so as to meet the requirements of more lighting scenes, and a person skilled in the art may design different shapes of the free-form surface 101 according to different application scenes to match with different types of reflective cups 10, which is not limited by the embodiment of the present invention. The free-form surface appearance calculated by using the related energy distribution mathematical expression is not limited to a single-form surface, but also can be a double-form surface or a multi-form surface

In the light control device provided by the embodiment of the present invention, the free-form surface 101 includes at least two reflection areas, the preset illuminated surface 20 includes at least two illuminated areas, the at least two reflection areas correspond to the at least two illuminated areas one by one, and each reflection area reflects the light emitted from the light source 11 to the corresponding illuminated area, thereby realizing the formation of light spots in at least two illuminated areas, meeting the requirement of simultaneously illuminating a plurality of specific objects on the ground and/or on the wall, meanwhile, the free-form surface reflecting surface 101 is calculated by the aid of the energy distribution mathematical expression according to the preset illuminated surface 20 of each partition, so that the free-form surface reflecting surface 101 can control and distribute energy with different proportions to at least two illuminated areas, each illuminated area has different required brightness, and illumination requirements of indoor wall washing or shelf commodity display are met. In addition, by adopting the light control device provided by the embodiment of the utility model, a mechanism is not required to shield light, or an additional lamp is not required to supplement the brightness of a specific area, so that the cost is reduced while the requirement of an illumination range is met.

Based on the same inventive concept, an embodiment of the present invention further provides a lighting system, where the lighting system provided by the embodiment of the present invention includes any one of the light control devices provided in the above embodiments, and the same or corresponding structures and explanations of terms as those in the above embodiments are not repeated herein. The lighting system provided in the embodiment of the present invention may be a wall washer or other outdoor lighting fixture, and the lighting system may include one light control device or a plurality of light control devices, which is not limited in the embodiment of the present invention.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A light control device, comprising:

a light reflecting cup and a light source;

the light reflecting cup comprises a free-form surface reflecting surface, the light emitting surface of the light source faces the free-form surface reflecting surface, and the optical axis of the light source is perpendicular to the central axis of the light reflecting cup;

the free-form surface reflecting surface is used for reflecting the light rays emitted by the light source to a preset illuminated surface and forming light spots on the preset illuminated surface;

the free-form surface reflecting surface comprises at least two reflecting areas, the preset illuminated surface comprises at least two illuminated areas, the at least two reflecting areas correspond to the at least two illuminated areas one to one, and each reflecting area is used for reflecting light rays emitted by the light source to the corresponding illuminated areas.

2. A light control device as claimed in claim 1,

the at least two reflection areas comprise a first reflection area and a second reflection area, and the at least two illuminated areas comprise a first illuminated area and a second illuminated area; the first reflection area is used for reflecting the light rays emitted by the light source to the first illuminated area, and the second reflection area is used for reflecting the light rays emitted by the light source to the second illuminated area;

the first reflection region and the second reflection region are arranged along a first direction, the first illuminated region and the second illuminated region are arranged along a second direction, and the first direction and the second direction are both parallel to the extending direction of the central axis of the light reflection cup.

3. A light control device as claimed in claim 2,

the first direction is opposite to the second direction.

4. A light control device as claimed in claim 2,

the length of the first illuminated area along the third direction is D1, the length of the second illuminated area along the third direction is D2, wherein D1 is D2, and the third direction is perpendicular to the second direction.

5. A light control device as claimed in claim 2,

the at least two reflection regions further comprise a third reflection region, the at least two illuminated regions further comprise a third illuminated region, and the third reflection region reflects the light rays emitted by the light source to the third illuminated region;

the first illuminated area and the second illuminated area are located in the same plane, and the plane where the second illuminated area is located and the plane where the third illuminated area is located intersect.

6. A light control device as claimed in claim 2,

the light emitting surface of the light source comprises N sub light emitting surfaces, the free-form surface reflecting surface comprises N sub reflecting surfaces, the N sub light emitting surfaces are in one-to-one correspondence with the N sub reflecting surfaces, and each sub reflecting surface is used for reflecting light emitted by the corresponding sub light emitting surface;

the N sub light-emitting surfaces comprise N1 first sub light-emitting surfaces and N2 second sub light-emitting surfaces, the N sub reflecting surfaces comprise N1 first sub reflecting surfaces and N2 second sub reflecting surfaces, the N1 first sub reflecting surfaces are located in the first reflecting area, and the N2 second sub reflecting surfaces are located in the second reflecting area; the first illuminated area comprises N1 first sub illuminated surfaces, and the second illuminated area comprises N2 second sub illuminated surfaces;

the N1 first sub light-emitting surfaces correspond to the N1 first sub reflection surfaces one by one, the N1 first sub reflection surfaces correspond to the N1 first sub illuminated surfaces one by one, and light emitted from each first sub light-emitting surface is reflected to the corresponding first sub illuminated surface through the corresponding first sub reflection surface;

the N2 second sub light-emitting surfaces correspond to the N2 second sub reflection surfaces one by one, the N2 second sub reflection surfaces correspond to the N2 second sub illuminated surfaces one by one, and light emitted from each second sub light-emitting surface is reflected to the corresponding second sub illuminated surface through the corresponding second sub reflection surface;

wherein N, N1 and N2 are both positive integers greater than 1.

7. The light control device according to claim 6, wherein the luminous flux of each of the sub light exit surfaces is equal;

the energy ratio of the first illuminated region to the second illuminated region is A: B, and N1: N2 is A: B.

8. The light management device of claim 7, wherein each of the first illuminated sub-surfaces has an equal area and each of the second illuminated sub-surfaces has an equal area.

9. A light control device as claimed in claim 6,

the first sub-reflecting surface comprises a plurality of first boundary vertexes, the first sub-illuminated surface comprises a plurality of second boundary vertexes, the first boundary vertexes and the second boundary vertexes are in one-to-one correspondence, and the first sub-reflecting surface satisfies the following conditions:

wherein the content of the first and second substances,

is the vector of the incident light from the light source to the first boundary vertex,

is a stand forThe vector of the outgoing light from the first boundary vertex to the corresponding second boundary vertex,

the normal vector of the free-form surface reflecting surface at the vertex of the first boundary is taken as the vector;

the second sub-reflecting surface comprises a plurality of third boundary vertexes, the second sub-illuminated surface comprises a plurality of fourth boundary vertexes, the third boundary vertexes correspond to the fourth boundary vertexes in a one-to-one mode, and the second sub-reflecting surface satisfies the following conditions:

wherein the content of the first and second substances,

is the vector of the incident light from the light source to the vertex of the third boundary,

the emergent light vector from the third boundary vertex to the corresponding fourth boundary vertex,

and the normal vector of the free-form surface reflecting surface at the vertex of the third boundary is shown.

10. An illumination system, characterized in that it comprises a light control device as claimed in any one of claims 1 to 9.

Images