Reflector assembly for changing irradiation effect by using multi-wafer light source

Abstract

The invention relates to the technical field of illumination, in particular to a reflector assembly using a multi-wafer light source to change the irradiation effect, which comprises a reflection cup, a first light source and a second light source, the first light source and the second light source are independently controlled, the second light sources are arranged around the first light source, and the reflection cup is provided with a light inlet and a light outlet. The first light source and the second light source are located in the light inlet, a reflection curved surface used for reflecting light emitted by the first light source and the second light source is formed on the inner wall face of the reflection cup, and when the first light source and the second light source are lightened at the same time, the light emitted by the first light source forms a first light spot through the light outlet. Light emitted by the second light source forms a second light spot through the light outlet, an interval area is formed between the first light spot and the second light spot, and a micro-structure reflection part used for enabling part of light emitted by the first light source or / and the second light source to be reflected towards the interval area is formed on the reflection curved surface in the circumferential direction of the reflection curved surface. Due to the fact that the micro-structure reflection part is arranged, the effect of improving the attractiveness of light spots is achieved.

Description

Technical Field

[0001] The present invention relates to the field of lighting technology, and more particularly to a reflector assembly for changing the illumination effect using a multi-crystal light source. Background Art

[0002] There are currently two mainstream methods to achieve changes in the irradiation angle or irradiation distance of a single lamp: one is to use a single optical component in conjunction with a mechanical structure to achieve changes in the light spot by changing the distance between the light source and the optical component, but the additional structural components make the structure of the lamp itself complex and large, especially in the current field of portable lamps, lightweight and miniaturization is the development trend, and the manual adjustment of the focal length is uncontrollable and cannot be accurately adjusted. The second is to use multiple optical components to deflect the light, but because the light passes through multiple optical component systems, the efficiency of the overall optical system is significantly reduced, and the additional optical devices need to be assembled and disassembled, which has an adverse effect on the integrity of the product.

[0003] The above two solutions have the following problems: low efficiency of the overall optical system, increased cost of lamps, complex structure or high cost.

[0004] In order to solve the above problems, a patent application filed on the same day as this application adopts multiple chips (central light source and surrounding light source), and the illumination angle and illumination distance can be changed by controlling the central light source and the surrounding light source separately. However, due to the independent control of the central light source and the surrounding light source, when designing optical components, the light emitting planes of the central light source and the surrounding light source cannot be regarded as uniform light emitting planes. Since the distance between the central light source and the surrounding light source (the distance between the chips) is still regarded as a non-energy radiation area, after being deflected or reflected by the optical device, the non-energy radiation area is easy to project an image, and the spatial distribution of the light can be seen. Fig. 9 , Fig. 9 The concave area m can be seen in the middle curve, and the light spot on the irradiated plane can be seen Fig.10 , there is an obvious dark area on the light spot, which affects the beauty of the light spot. Summary of the invention

[0005] In order to overcome the problem in the prior art that a central light source and a surrounding light source are independently controlled to change the illumination angle or illumination distance of a lamp, but this affects the aesthetics of the light spot, the present invention provides a reflector assembly that uses a multi-crystal light source to change the illumination effect.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a reflector assembly that uses a multi-crystal light source to change the illumination effect, comprising a reflective cup and a first light source and a second light source that are independently controlled from each other, a plurality of second light sources are provided, each of the second light sources is arranged around the first light source, the reflective cup has a light inlet and a light outlet, the first light source and the second light source are located in the light inlet, and a reflective curved surface is formed on the inner wall surface of the reflective cup for reflecting the light emitted by the first light source and the second light source. When the first light source and the second light source are lit at the same time, the light emitted by the first light source forms a first light spot through the light outlet, and the light emitted by the second light source forms a second light spot through the light outlet, and a spacing area is formed between the first light spot and the second light spot, and a microstructure reflective portion is formed on the reflective curved surface along its circumference for reflecting part of the light emitted by the first light source or\the second light source toward the spacing area.

[0007] In the technical solution of the present application, when only the first light source is lit, the light emitted by the first light source eventually forms a first light spot that is approximately a perfect circle after passing through the light outlet. When there is no microstructure reflective portion formed on the reflective curved surface, when both the first light source and the second light source are lit, the light emitted by the first light source eventually forms a first light spot that is approximately a perfect circle after passing through the light outlet, and the light emitted by the second light source eventually forms a larger second light spot that is approximately annular after passing through the light outlet, and the second light spot is located at the periphery of the first light spot. Since there is a gap between the first light source and the second light source, a gap area is formed between the second light spot and the first light spot. Since a microstructure reflective portion is formed on the reflective curved surface along its circumference for reflecting part of the light emitted by the first light source or the second light source toward the gap area, the microstructure reflective portion can reflect part of the light emitted by the first light source or the second light source toward the gap area, thereby increasing the luminous flux of the gap area, thereby achieving the effect of improving the aesthetics of the light spot.

[0008] Furthermore, the microstructure reflective portion is distributed in a ring-shaped manner on the reflective curved surface, and the microstructure reflective portion includes a plurality of spherical base circles formed on the reflective curved surface. In the present technical solution, since the microstructure reflective portion includes a plurality of spherical base circles, the base circles are spherical, and the spherical shape of the base circles can change the reflection angle of the light, and each base circle is a reflective unit, and a plurality of reflective units are distributed in a ring-shaped manner on the reflective curved surface, so that the angle of the light projected there can be changed, and then the light is reflected into the dark spot area to increase the luminous flux of the dark spot area, thereby achieving the effect of improving the light beauty and brightness.

[0009] Furthermore, two adjacent base circles in the same circle partially overlap, and two adjacent base circles on two adjacent circles partially overlap. In the present technical solution, since two adjacent base circles in the same circle partially overlap, and two adjacent base circles on two adjacent circles partially overlap, the distance between two adjacent base circles is reduced, so that more base circles are distributed in the reflective part of the microstructure, more reflective base circles with different curvatures can be obtained, the light mixing effect is better, the phenomenon of chip imaging in the light spot is avoided, and the reflection effect of light is enhanced.

[0010] Furthermore, the radius of the base circle is r, the center distance between two corresponding base circles of two adjacent circles is D, and the center distance between two adjacent base circles of the same circle is d.

[0011] Furthermore, the radius r of the base circle is in the range of 0.5 mm. <r<2.2mm。

[0012] Furthermore, the range of the center distance D is 0.04 mm. <D<r。

[0013] Furthermore, the range of the center distance d is 0.05 mm <d<1mm。

[0014] Furthermore, the base circles of two adjacent circles are concentric along the circumferential array, the number of the base circles on the same circle is N, and N=2*π*n*D / d, wherein n is a positive integer, and n represents the density of the base circles on the same circle.

[0015] Furthermore, the vertical height between the light inlet and the light outlet is h, the microstructure reflecting portion extends from the light outlet position toward the light outlet to the middle position of the reflecting curved surface, the vertical height between the microstructure reflecting portion and the light inlet is P, and P = h*0.6*tan30°.

[0016] Furthermore, the generatrix function of the reflection surface is as follows:

[0017]

[0018] The light emitting surfaces of the first light source and the second light source are flush, the vertical distance between the light emitting surfaces and the light inlet is i, the height of the reflective cup is h, and the diameter of the light outlet is k.

[0019] Compared with the prior art, the beneficial effect of the present invention is: in the present invention, since a microstructure reflecting portion is formed on the reflecting surface along its circumference for reflecting part of the light emitted by the first light source or\the second light source toward the dark spot area, the microstructure reflecting portion can reflect part of the light emitted by the first light source or\the second light source toward the spacing area, thereby increasing the luminous flux of the spacing area, thereby achieving the effect of improving the aesthetics of the light spot. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of the first light source and the second light source package;

[0021] Figure 2 It is a schematic diagram of the generatrix and coordinate system of the reflective cup cross section;

[0022] Figure 3 It is a schematic diagram of the relative position relationship between the luminous cup, the first light source and the second light source;

[0023] Figure 4 is a schematic diagram of the relative positions of the reflective structures on the reflective surface of the reflective cup;

[0024] Figure 5 is a light path diagram when only the first light source in the reflector assembly is lit;

[0025] Figure 6 A light distribution curve diagram when the reflector assembly (without reflective structure) only lights up the first light source;

[0026] Figure 7 It is a true color spot diagram when the reflector assembly (without reflective structure) only lights up the first light source;

[0027] Figure 8 A light path diagram when the reflector assembly (without a reflective structure) lights up the first light source and the second light source;

[0028] Fig. 9 A light distribution curve diagram when the reflector assembly (without reflective structure) lights up the first light source and the second light source;

[0029] Fig.10 A true color spot diagram when the reflector assembly (without reflective structure) lights up the first light source and the second light source;

[0030] Fig.11 A light path diagram when the reflector assembly (with a reflective structure) lights up the first light source and the second light source;

[0031] Fig.12 A light distribution curve diagram when the reflector assembly (with a reflective structure) lights up the first light source and the second light source;

[0032] Fig.13A true color spot diagram when the reflector assembly (with a reflective structure) lights up the first light source and the second light source;

[0033] Fig.14 It is a schematic diagram of the structure of a part of the base circle distributed along the circumference array;

[0034] Fig.15 It is the position relationship diagram of two adjacent base circles of two adjacent circles;

[0035] Fig.16 This is a position relationship diagram of two adjacent base circles in the same circle.

[0036] In the accompanying drawings: 1, reflective cup; 2, first light source; 3, second light source; 11, light inlet; 12, light outlet; 13, reflective curved surface; 4, first light spot; 5, second light spot; 6, spacing area; 7, microstructure reflective part; 71, base circle. DETAILED DESCRIPTION

[0037] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0038] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0039] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0040] Example 1

[0041] like Figure 1 , Figure 3 and Fig.10As shown, a reflector assembly for changing the illumination effect using a multi-crystal light source comprises a reflective cup 1 and a first light source 2 and a second light source 3 which are independently controlled. A plurality of second light sources 3 are provided, and each second light source 3 is arranged around the first light source 2. The reflective cup 1 has a light inlet 11 and a light outlet 12. The first light source 2 and the second light source 3 are located in the light inlet 11. A reflective curved surface 13 for reflecting the light emitted by the first light source 2 and the second light source 3 is formed on the inner wall surface of the reflective cup 1. When the first light source 2 and the second light source 3 are lit at the same time, the light emitted by the first light source 2 forms a first light spot 4 through the light outlet 12, and the light emitted by the second light source 3 forms a second light spot 5 through the light outlet 12. A spacing area 6 is formed between the first light spot 4 and the second light spot 5. A microstructure reflective portion 7 for reflecting part of the light emitted by the first light source 2 or\ and the second light source 3 toward the spacing area 6 is formed on the reflective curved surface 13 along its circumference.

[0042] In this embodiment, when only the first light source 2 is lit, the light emitted by the first light source 2 eventually forms a first light spot 4 that is approximately a perfect circle after passing through the light outlet 12. When the microstructure reflective portion 7 is not formed on the reflective curved surface 13, when both the first light source 2 and the second light source 3 are lit, the light emitted by the first light source 2 eventually forms a first light spot 4 that is approximately a perfect circle after passing through the light outlet 12, and the light emitted by the second light source 3 eventually forms a larger second light spot 5 that is approximately annular after passing through the light outlet 12, and the second light spot 5 is located at the periphery of the first light spot 4. Since there is a minimum interval (the spacing between the wafers) between the first light source 2 and the first light source 3, an interval area 6 is formed between the second light spot 5 and the first light spot 4. Since a microstructure reflecting portion 7 is formed along the circumference of the reflecting curved surface 13 for reflecting part of the light emitted by the first light source 2 or\ and the second light source 3 toward the spacing area 6, the microstructure reflecting portion 7 can reflect part of the light emitted by the first light source 2 or\ and the second light source 3 toward the spacing area 6, thereby increasing the luminous flux of the spacing area 6, thereby achieving the effect of improving the aesthetics of the light spot.

[0043] It should be noted that in order to realize that the microstructure reflective portion 7 on the reflective curved surface 13 can reflect part of the light emitted by the first light source 2 or\ and the second light source 3 toward the spacing area 6, it can be achieved by setting the structure of the microstructure reflective portion 7, or by changing the reflection curvature of the microstructure reflective portion 7 to achieve the reflection of part of the light emitted by the first light source 2 or\ and the second light source 3 toward the spacing area 6. It should also be pointed out that the first light source 2 is the central light source, and the second light sources 3 are uniformly distributed on the outside of the first light source 2 along the circumferential direction with the first light source 2 as the center. It should be noted that the light emitting surfaces of the first light source 2 and the second light source 3 can be on the same plane, and the first light source 2 and the second light source 3 can be packaged together.

[0044] It should also be pointed out that the first light source 2 and the second light source 3 are connected to the control circuit respectively. The control circuit can light up the first light source 2 alone or simultaneously. When the control circuit makes the first light source 2 emit light, Figure 5 As shown, part of the incident light is emitted vertically to the receiving surface, and another part of the incident light is reflected by the reflective curved surface 13 and emitted from the light outlet 12 of the reflective cup 1 in an approximately collimated state. There is also part of the incident light that is not reflected by the reflective curved surface 13 and is not emitted vertically. This part of the light can be considered to be unable to reach the receiving surface, so it is not discussed in this example; all the outgoing light rays reach the irradiation surface to form a small approximately perfect circular light spot, and the illumination gradient of each point on the light spot changes very little. The true color light spot diagram is shown in detail. Figure 7 , the distribution of light in space is expressed in the light distribution curve, such as Figure 6 As shown, it can be seen from the figure that the half-peak angle is 6°.

[0045] When the microstructure reflective portion 7 is not formed on the reflective curved surface 13, when the control circuit enables the first light source 2 and the second light source 3 to emit light at the same time, the optical path length at this time is as follows: Figure 8 , the light distribution curve is as follows Fig. 9 At the same time, it can be seen that there is an obvious depression m in the light distribution curve. This phenomenon is due to the minimum gap b between the first light source 2 and the second light source 3. This gap is regarded as an energy-free radiation area, which is easy to project an image. The true color spot diagram finally projected onto the irradiation plane is shown in Fig.10 It can be seen that dark spots are formed in the interval area 6 on the irradiated plane, which is not beautiful and affects the beauty of the entire light effect.

[0046] When the microstructure reflective portion 7 is formed on the reflective curved surface 13, when the control circuit causes the first light source 2 and the second light source 3 to emit light at the same time, the optical path at this time is as shown in the figure. Fig.11 When part of the light passes through the microstructure reflective portion 7, the reflection angle changes, and the light distribution curve is as follows: Fig.12 , it can be seen that the curvature of the light distribution curve is continuous without depression, and the true color spot diagram finally projected onto the irradiation plane is shown in Fig.13 It can be clearly seen that the dark spots in the interval area 6 have disappeared, and the half-peak angle can be seen to be 10°.

[0047] It can be seen that, without moving the reflector cup or adding new structural components, the irradiation distance and angle of the lamp can be changed by controlling the first light source 2 and the second light source 3 respectively. By providing a microstructure reflective portion 7 on the reflective surface, the aesthetics of the light spot can be improved.

[0048] like Figure 4 , Fig.14As shown, the microstructure reflective portion 7 is distributed in a ring-shaped manner on the reflective curved surface 13, and the microstructure reflective portion 7 includes a plurality of spherical base circles 71 formed on the reflective curved surface 13. Specifically, the base circles 71 can be distributed in a circular array on the reflective curved surface 13. In the present technical solution, since the microstructure reflective portion 7 includes a plurality of spherical base circles 71, the base circle 71 is spherical, and the spherical shape of the base circle 71 can change the reflection angle of the light, and each base circle 71 is a reflection unit, and a large number of reflection units are distributed in a ring-shaped manner on the reflective curved surface 13, so that the angle of the light projected there can be changed, and then the light can be reflected to the spacing area 6 to increase the luminous flux of the spacing area 6, so as to achieve the effect of improving the light beauty and brightness.

[0049] Among them, Fig.14 ,like Fig.15 As shown, two adjacent base circles 71 in the same circle partially overlap, and two adjacent base circles 71 on two adjacent circles partially overlap. Since two adjacent base circles 71 in the same circle partially overlap, and two adjacent base circles 71 on two adjacent circles partially overlap, the distance between two adjacent base circles 71 is reduced, so that more base circles 71 are distributed on the microstructure reflection part 7, more reflection base circles 71 with different curvatures can be obtained, the light mixing effect is better, the phenomenon of chip imaging in the light spot is avoided, and the reflection effect of light is enhanced.

[0050] In addition, the radius of the base circle 71 is r, and the center distance between two corresponding base circles 71 of two adjacent circles is D. Fig.15 As shown, the centers of the two base circles 71 of the two adjacent circles are points E and F, respectively, where the spacing between EF is the distance D between the corresponding two base circles of the two adjacent circles; the center distance between the two adjacent base circles 71 of the same circle is d, as shown in FIG. Fig.16 As shown, the centers of the two base circles 71 in the same circle are points G and H respectively, wherein the distance between GH is the distance d between the centers of the two adjacent base circles 71 in the same circle.

[0051] The radius r of the base circle 71 is in the range of 0.5 mm. <r<2.2mm。

[0052] In addition, the range of the center distance D is 0.04mm <D<r。

[0053] Among them, the range of the center distance d is 0.05mm <d<1mm。

[0054] In addition, the base circles 71 of two adjacent circles are concentric along the circumferential array, and the number of the base circles 71 on the same circle is N, and N=2*π*n*D / d, where n is a positive integer and n represents the density of the base circles 71 on the same circle.

[0055] Example 2

[0056] The difference from Example 1 is that the vertical height between the light inlet 11 and the light outlet 12 is h, the microstructure reflection portion 7 extends from the light outlet 11 toward the light outlet 12 to the middle of the reflective surface 13, and the vertical height between the microstructure reflection portion 7 and the light inlet 11 is P, P = h*0.6*tan30°.

[0057] Example 3

[0058] The difference from Example 1 is that the light emitting surfaces of the first light source 2 and the second light source 3 are flush, the vertical distance between the light emitting surfaces of the first light source 2 and the second light source 3 and the light inlet 11 of the reflective cup 1 is i, the height of the reflective cup 1 is h (i.e., the vertical distance between the light inlet 11 and the light outlet 12), the diameter of the light outlet 12 is k, and a coordinate system is established with the center point of the light emitting surface of the first light source 2 as the origin O. Figure 2 The function relationship is established for the generatrix of the reflective cup cross section and the coordinate system diagram, and the generatrix of the reflective surface 13 is obtained. The function relationship of the generatrix is ​​as follows:

[0059]

[0060] And take a point on the first quadrant in the coordinate system to solve the above quadratic curve, which is the generatrix of the reflective surface 13 of the reflective cup 1. With the Y axis as the rotation axis, the quadratic curve is rotated to obtain a surface, which is the reflective surface 13 of the reflective cup, and the reflective surface 13 is a smooth mirror surface. The range of y is i≤y≤i+h. The diameter of the first light source 2 and the second light source 3 is Φ, and the diameter k of the light outlet 12 of the reflective cup 1 is 5.5 to 7.2 times the diameter of Φ. The height h of the reflective cup 1, the diameter k of the light outlet 12 of the reflector, and the vertical distance i between the light outlet plane of the package (the light outlet surface of the first light source 2 and the second light source 3) and the light inlet at the bottom of the reflective cup 1 meet the following mathematical relationship: h=0.7*ki.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A reflector assembly for changing the illumination effect using a multi-crystal light source, characterized in that: The invention comprises a reflective cup (1) and a first light source (2) and a second light source (3) which are independently controlled from each other, wherein a plurality of the second light sources (3) are provided and each of the second light sources (3) is arranged around the first light source (2), the reflective cup (1) has a light inlet (11) and a light outlet (12), the first light source (2) and the second light source (3) are located in the light inlet (11), and a reflective curved surface (13) is formed on the inner wall surface of the reflective cup (1) for reflecting light emitted by the first light source (2) and the second light source (3); When the first light source (2) and the second light source (3) are lit at the same time, the light emitted by the first light source (2) forms a first light spot (4) through a light outlet (12), and the light emitted by the second light source (3) forms a second light spot (5) through the light outlet (12), a spacing area (6) is formed between the first light spot (4) and the second light spot (5), and a microstructure reflection portion (7) is formed along the circumference of the reflection curved surface (13) for causing part of the light emitted by the first light source (2) or the second light source (3) to be reflected toward the spacing area (6).

2. The reflector assembly for changing the illumination effect using a multi-crystal light source according to claim 1, characterized in that: The microstructure reflection part (7) is distributed in a ring-shaped manner on the reflection curved surface (13), and the microstructure reflection part (7) comprises a plurality of spherical base circles (71) formed on the reflection curved surface (13).

3. The reflector assembly for changing the illumination effect using a multi-crystal light source according to claim 2, characterized in that: Two adjacent base circles (71) in the same circle partially overlap, and two adjacent base circles (71) in two adjacent circles partially overlap.

4. The reflector assembly for changing the illumination effect using a multi-crystal light source according to claim 3, characterized in that: The radius of the base circle (71) is r, the center distance between two corresponding base circles (71) in two adjacent circles is D, and the center distance between two adjacent base circles (71) in the same circle is d.

5. The reflector assembly for changing the illumination effect using a multi-crystal light source according to claim 4, characterized in that: The radius r of the base circle (71) is in the range of 0.5 mm. <r<2.2mm。 6. The reflector assembly for changing the illumination effect using a multi-crystal light source according to claim 5, characterized in that: The range of the center distance D is 0.04 mm <D<r。 7. The reflector assembly for changing the illumination effect using a multi-crystal light source according to claim 4, characterized in that: The range of the center distance d is 0.05 mm <d<1mm。 8. The reflector assembly for changing the illumination effect using a multi-crystal light source according to claim 4, characterized in that: The base circles (71) of two adjacent circles are concentric along the circumferential array, the number of the base circles (71) on the same circle is N, and N=2*π*n*D / d, where n is a positive integer and n represents the density of the base circles (71) on the same circle.

9. The reflector assembly for changing the illumination effect using a multi-crystal light source according to claim 2, characterized in that: The vertical height between the light inlet (11) and the light outlet (12) is h, the microstructure reflection portion (7) extends from the position of the light outlet (12) in the direction of the light outlet (12) to the middle position of the reflection curved surface (13), and the vertical height between the microstructure reflection portion (7) and the light inlet (11) is P, wherein P=h*0.6*tan30°.

10. The reflector assembly for changing the illumination effect using a multi-crystal light source according to claim 1, characterized in that: The generatrix function of the reflection surface (13) is as follows: The light emitting surfaces of the first light source (2) and the second light source (3) are flush, the vertical distance between the light emitting surfaces and the light inlet (11) is i, the height of the reflective cup (1) is h, and the diameter of the light outlet (12) is k.

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