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

Abstract

The utility model relates to the technical field of illumination, in particular to a reflector assembly using a multi-wafer light source to change an irradiation effect, which comprises an optical device, a first light source and a plurality of second light sources, the first light source and the second light sources are mutually independently controlled, the second light sources are arranged around the first light source, and the first light source and the second light source are mutually independently controlled. The optical device is provided with a light inlet and a light outlet part, the first light source and the second light source are located in the light inlet, at least a reflection curved surface is formed on the optical device, and the reflection curved surface is used for projecting light rays emitted by the first light source and the second light source from the light inlet through the light outlet part. According to the utility model, the illumination effect of the lamp can be changed only by respectively controlling the lightening of the first light source and the second light source.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and more specifically, to a reflector assembly that uses a polycrystalline light source to change the illumination effect. Background Technology

[0002] To achieve variations in the illumination angle or distance of a single lamp, there are currently two main methods: One is to use a single optical element in conjunction with a mechanical structure. The change in the distance between the light source and the optical element achieves a change in the light spot. However, the added structural components make the lamp itself complex and large. Especially in the current field of portable lighting, where lightweight miniaturization is the trend, and manual focus adjustment is uncontrollable, making precise adjustment impossible. The second method uses multiple optical elements to deflect the light. However, because the light passes through multiple optical element systems, the overall optical system efficiency decreases significantly. Furthermore, the additional optical elements require assembly and disassembly, negatively impacting the product's overall integrity.

[0003] The two solutions mentioned above have the following problems: low overall optical system efficiency, increased lamp cost, and complex or high-cost structure. Utility Model Content

[0004] To overcome the problems of complex structure or high cost in the prior art for achieving changes in the illumination angle or illumination distance of lamps, this utility model provides a reflector assembly that uses a multi-chip light source to change the illumination effect.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a reflector assembly that uses a multi-chip light source to change the illumination effect, including an optical device and a first light source and a second light source that are independently controlled. Multiple second light sources are provided, and each second light source is arranged around the first light source. The optical device has a light inlet and a light outlet. The first light source and the second light source are located in the light inlet. At least one reflective surface is formed on the optical device. The reflective surface is used to project the light emitted by the first light source and the second light source from the light inlet through the light outlet.

[0006] In the technical solution of this application, when only the first light source is lit, the light emitted by the first light source is reflected by the reflective surface and finally forms a nearly circular first light spot after passing through the light-emitting part. This first light spot has a long illumination distance and a small illumination angle (i.e., a small illumination range). When both the first and second light sources are lit, the light emitted by the first light source is reflected by the reflective surface and finally forms a nearly circular first light spot after passing through the light-emitting part. The light emitted by the second light source is reflected by the reflective surface and finally forms a larger, nearly annular second light spot after passing through the light-emitting part. The second light spot is located on the outer periphery of the first light spot. The first and second light spots form an even larger light spot with a short illumination distance and a large illumination angle (i.e., a large illumination range). Therefore, the illumination effect of the lamp can be changed by controlling the lighting of the first and second light sources separately.

[0007] Furthermore, the optical device is a reflector cup, the light-emitting part is a light-emitting port, and the reflective surface is formed on the inner peripheral wall of the reflector cup.

[0008] Furthermore, when the first light source and the second light source are lit simultaneously, the light emitted by the first light source forms a first light spot through the light-emitting part, and the light emitted by the second light source forms a second light spot through the light-emitting part. An interval region is formed between the first light spot and the second light spot, and a reflective part is formed along its circumference on the reflective surface for reflecting a portion of the light emitted by the first light source or the second light source toward the interval region.

[0009] Furthermore, the reflective portion is distributed in a ring shape on the reflective surface, and the reflective portion includes several concentric spherical base circles formed on the reflective surface. In this technical solution, since the reflective portion includes several concentric spherical base circles, the spherical shape of the base circles can change the reflection angle of the light. Each base circle is a reflective unit, and numerous reflective units are distributed in a ring shape on the reflective surface, thereby changing the angle of the light projected there, and thus reflecting the light into the dark spot area to increase the luminous flux of the dark spot area, achieving the effect of improving the brightness and luminance.

[0010] Furthermore, the base circles of two adjacent circles in the same ring partially overlap, and the base circles of two adjacent rings partially overlap. In this technical solution, because the base circles of two adjacent circles in the same ring partially overlap, and the base circles of two adjacent rings partially overlap, the distance between two adjacent base circles is reduced, resulting in more base circles in the reflective portion. This allows for the acquisition of more reflective base circles with different curvatures, leading to better light mixing, avoiding the phenomenon of light spots appearing as chip imaging, and enhancing the light reflection effect.

[0011] Furthermore, the base circles of two adjacent rings are concentric along the circumference array, and the number of base circles on the same ring is N, where N = 2*π*n*D / d, and n is a positive integer, representing the density of the base circles on the same ring.

[0012] Furthermore, the vertical height between the light inlet and the light outlet is h, the reflective part extends from the position of the light outlet to the middle position of the reflective surface in the direction of the light outlet, and the vertical height between the reflective part and the light inlet is P, where P = h * 0.6 * tan30°.

[0013] Furthermore, the generatrix function of the reflecting surface is as follows:

[0014]

[0015] Wherein, the light-emitting surfaces of the first light source and the second light source are flush, the vertical distance between the light-emitting surface and the light inlet is i, the height of the optical device is h, and the diameter of the light-emitting part is k.

[0016] Furthermore, the optical device is a lens, and a convex lens incident surface is formed on the top of the lens facing the light inlet. The light emitting part includes a convex lens exiting surface located on the top of the lens and facing the convex lens incident surface, and a reflected light exiting surface. The reflected light exiting surface is located on the top of the lens and on the outer periphery of the convex lens exiting surface. A refractive surface is formed on the lens and on the peripheral surface of the light inlet, and the reflective surface is formed on the inner periphery of the lens.

[0017] Furthermore, the incident surface, exit surface, refractive surface, reflecting surface, and exit surface of the reflected light ray are all curved surfaces.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, when only the first light source is lit, the light emitted by the first light source eventually forms a nearly circular first light spot after passing through the light-emitting part. This first light spot has a long illumination distance and a small illumination angle (i.e., a small illumination range). When both the first and second light sources are lit, the light emitted by the first light source eventually forms a nearly circular first light spot after passing through the light-emitting part, and the light emitted by the second light source eventually forms a larger, nearly annular second light spot after passing through the light-emitting part. The second light spot is located on the outer periphery of the first light spot. The first and second light spots form a larger light spot, and this larger light spot has a shorter illumination distance and a larger illumination angle (i.e., a larger illumination range). Therefore, the illumination effect of the lamp can be changed by controlling the lighting of the first and second light sources separately. Attached Figure Description

[0019] Figure 1A schematic diagram of the encapsulation structure for the first and second light sources;

[0020] Figure 2 A schematic diagram of the cross-sectional generatrix and coordinate system of an optical device;

[0021] Figure 3 A schematic diagram showing the relative positions of the light-emitting cup, the first light source, and the second light source;

[0022] Figure 4 This is a schematic diagram showing the relative positions of the reflective structures on the reflective surface of an optical device.

[0023] Figure 5 The optical path diagram is shown when only the first light source in the reflector assembly is illuminated.

[0024] Figure 6 The light distribution curve of the reflector assembly (non-reflective structure) when only the first light source is lit;

[0025] Figure 7 A true-color light spot diagram of the reflector assembly (non-reflective structure) when only the first light source is lit;

[0026] Figure 8 Optical path diagrams for the reflector assembly (non-reflective structure) when the first and second light sources are illuminated;

[0027] Figure 9 The light distribution curves of the reflector assembly (non-reflective structure) when the first and second light sources are lit;

[0028] Figure 10 True-color light spot images of the reflector assembly (non-reflective structure) when the first and second light sources are lit;

[0029] Figure 11 Optical path diagrams for the reflector assembly (with reflective structure) when the first and second light sources are illuminated;

[0030] Figure 12 The light distribution curves of the reflector assembly (with a reflective structure) when the first and second light sources are lit.

[0031] Figure 13 True-color light spot diagrams of the reflector assembly (with reflective structure) when the first and second light sources are lit;

[0032] Figure 14 This is a schematic diagram of a portion of the base circles distributed along a circular array.

[0033] Figure 15 This diagram shows the positional relationship between two adjacent base circles in two adjacent rings.

[0034] Figure 16 This is a diagram showing the positional relationship between two adjacent base circles in the same ring.

[0035] Figure 17 Optical path diagram when the optical device is a reflector cup and only the first light source is lit;

[0036] Figure 18 When the optical device is a reflector, the optical path diagram is shown when the first light source and the second light source are lit.

[0037] Figure 19 When the optical device is a reflector, the light distribution curve is shown when only the first light source is lit.

[0038] Figure 20 The light distribution curves when the optical device is a reflector cup and the first and second light sources are lit.

[0039] Figure 21 This is a schematic diagram of an optical device called a lens.

[0040] Figure 22 When the optical device is a lens, the optical path diagram is shown when only the first light source is lit.

[0041] Figure 23 When the optical device is a lens, the optical path diagram is shown when the first and second light sources are lit.

[0042] Figure 24 When the optical device is a lens, the light distribution curve is shown when only the central light source is illuminated.

[0043] Figure 25 This is a light distribution curve diagram when the optical device is a lens, showing the illumination of the central group of light sources and the peripheral group of light sources.

[0044] In the attached diagram: 1. Optical device; 2. First light source; 3. Second light source; 11. Light inlet; 12. Light outlet; 13. Reflecting surface; 4. First light spot; 5. Second light spot; 6. Spacing area; 7. Reflecting part; 71. Base circle; 14. Convex lens incident surface; 121. Convex lens exit surface; 122. Reflected ray exit surface; 15. Refraction surface. Detailed Implementation

[0045] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0046] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0047] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0048] Example 1

[0049] like Figure 1 , Figure 3 and Figure 10 As shown, a reflector assembly that uses a multi-chip light source to change the illumination effect includes an optical device 1 and a first light source 2 and a second light source 3 that are independently controlled. Multiple second light sources 3 are provided, and each second light source 3 is arranged around the first light source 2. The optical device 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. The optical device is used to project the light emitted by the first light source 2 and the second light source 3 from the light inlet 11 through the light outlet 12.

[0050] In this embodiment, when only the first light source 2 is lit, the light emitted by the first light source 2 is reflected by the reflective surface 13 and finally forms a nearly circular first light spot 4 after passing through the light-emitting part 12. The first light spot 4 has a long illumination distance and a small illumination angle (i.e., a small illumination range). When both the first light source 2 and the second light source 3 are lit, the light emitted by the first light source 2 is reflected by the reflective surface 13 and finally forms a nearly circular first light spot 4 after passing through the light-emitting part 12. The light emitted by the second light source 3 is reflected by the reflective surface 13 and finally forms a larger, nearly annular second light spot 5 after passing through the light-emitting part 12. The second light spot 5 is located on the outer periphery of the first light spot 4. The first light spot 4 and the second light spot 5 form a larger light spot, and this larger light spot has a short illumination distance and a large illumination angle (i.e., a large illumination range). Therefore, the illumination effect of the lamp can be changed by controlling the lighting of the first light source 2 and the second light source 3 separately. 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 surface, and the first light source 2 and the second light source 3 can be packaged together.

[0051] In this embodiment, optical component 1 is a reflector, light-emitting part 12 is a light-emitting port, and reflective surface 13 is formed on the inner peripheral wall of the reflector. In this embodiment, when the control circuit causes the first light source 2 to emit light (see optical path...), Figure 17 Part of the incident light rays are perpendicularly emitted to the receiving surface, while another part is reflected by the reflecting surface 13 and emerges from the light outlet of the reflector cup in an approximately collimated state. A portion of the incident light rays are not reflected by the reflecting surface and are emitted non-perpendicularly; this portion can be considered unable to reach the receiving surface and is therefore not discussed in this example. All the emitted light rays reach the irradiated surface to form a small, approximately circular first light spot 4. The illuminance gradient at each point on the first light spot 4 is minimal. The spatial distribution of the light rays is expressed in the light distribution curve (see...). Figure 19 From the diagram, we can see that the half-peak angle is 6°. When the control circuit causes the first light source 2 and the second light source 3 to emit light simultaneously (see optical path), Figure 18 The light can be discussed in two parts. The optical path of the light emitted from the first light source 2 is consistent with that described above. The light emitted from the second light source 3, after being reflected by the reflecting surface 13, exits non-perpendicularly from the light outlet. Upon reaching the irradiated surface, it forms a large, approximately circular light spot together with the light spot generated by the first light source 2. The illuminance gradient changes significantly at various points on the light spot, while the illuminance gradient changes gradually. The spatial distribution of the light is expressed in the light distribution curve (see...). Figure 20 From the diagram, we can see that the half-peak angle is 36°. Therefore, it can be concluded that without moving the reflector cup or adding new structural components, the lighting effect can be changed simply by controlling the switching of the first light source 2 and the second light source 3.

[0052] Furthermore, when the first light source 2 and the second light source 3 are lit simultaneously, the light emitted by the first light source 2 forms a first light spot 4 through the light-emitting part 12, and the light emitted by the second light source 3 forms a second light spot 5 through the light-emitting part 12. An interval region 6 is formed between the first light spot 4 and the second light spot 5. A reflective part 7 is formed on the reflective surface 13 along its circumference to reflect part of the light emitted by the first light source 2 or the second light source 3 toward the interval region 6.

[0053] It should be noted that, since the light-emitting planes of the first light source 2 and the second light source 3 cannot be considered as uniform light-emitting surfaces, there is a distance b between the first light source 2 and the second light source 3, such as... Figure 1 The area shown (the spacing between the chips) is still considered a region with no energy emission. Therefore, after being deflected or reflected by optical devices, this region with no energy emission is easily projected into an image, and the spatial distribution of its light is visible. Figure 9 , Figure 9 The concave point m is visible in the middle curve, and the light spot is visible on the irradiated plane. Figure 10 The presence of obvious dark areas on the light spot affects its aesthetic appeal.

[0054] In this embodiment, when only the first light source 2 is lit, the light emitted by the first light source 2 eventually forms a nearly circular first light spot 4 after passing through the light-emitting part 12. When no reflective part 7 is formed on the reflective 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 nearly circular first light spot 4 after passing through the light-emitting part 12, and the light emitted by the second light source 3 eventually forms a larger, nearly annular second light spot 5 after passing through the light-emitting part 12. The second light spot 5 is located on the outer periphery of the first light spot 4. Since there is a minimum gap (the spacing between the chips) between the first light source 2 and the first light source 3, a gap region 6 is formed between the second light spot 5 and the first light spot 4. Since a reflective portion 7 is formed on the reflective surface 13 along its circumference, which is used to reflect part of the light emitted by the first light source 2 or the second light source 3 toward the interval region 6, the reflective portion 7 can reflect part of the light emitted by the first light source 2 or the second light source 3 toward the interval region 6, thereby increasing the luminous flux of the interval region 6 and thus improving the aesthetics of the light spot.

[0055] It should be noted that, in order to enable the reflective portion 7 on the reflective surface 13 to reflect a portion of the light emitted by the first light source 2 or / and the second light source 3 toward the interval region 6, this can be achieved by setting the structure of the reflective portion 7, or by changing the reflective curvature of the reflective portion 7 to reflect a portion of the light emitted by the first light source 2 or / and the second light source 3 toward the interval region 6. It should also be pointed out that the first light source 2 is the central light source, and each of the second light sources 3 is evenly distributed around the first light source 2 along the circumferential direction.

[0056] It should also be noted that the first light source 2 and the second light source 3 are respectively connected to the control circuit. The control circuit can light up the first light source 2 alone, or it can light up the first light source 2 and the second light source 3 simultaneously. When the control circuit causes the first light source 2 to emit light, such as Figure 5 As shown, some incident light rays exit perpendicularly to the receiving surface, while another portion of the incident light rays, after reflection by the reflective surface 13, exit from the light-emitting part 12 of the optical device 1 in an approximately collimated state. A portion of the incident light rays also exits non-perpendicularly without reflection by the reflective surface 13; this portion of light rays can be considered unable to reach the receiving surface and is therefore not discussed in this example. All the outgoing light rays reach the irradiation surface to form a small, approximately circular light spot. The illuminance gradient at each point on the light spot changes very little. For a detailed true-color light spot diagram, see [link to diagram]. Figure 7 The distribution of light in space is represented by a light distribution curve, such as... Figure 6 As shown in the figure, the half-peak angle is 6°.

[0057] When no reflective portion 7 is formed on the reflective surface 13, and the control circuit causes the first light source 2 and the second light source 3 to emit light simultaneously, the optical path length at this time is shown in the figure. Figure 8The light distribution curve is as follows Figure 9 Meanwhile, a noticeable dip m is visible 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 considered a region with no energy emission, making it easy to project and image. The final true-color light spot pattern projected onto the irradiated plane is shown in the image. Figure 10 As can be seen, dark spots are formed in the interval area 6 on the irradiated plane. These dark spots are not aesthetically pleasing and affect the overall beauty of the light effect.

[0058] When the reflective part 7 is formed on the reflective surface 13, and the control circuit causes the first light source 2 and the second light source 3 to emit light simultaneously, the optical path is as shown in the figure. Figure 11 When some light passes through the reflector 7, the reflection angle changes, and the light distribution curve is as follows: Figure 12 As can be seen, the curvature of the light distribution curve is continuous without any dips, and the final true-color light spot pattern projected onto the irradiated plane is shown in the image. Figure 13 It is clearly visible that the dark spot in interval region 6 has disappeared, and the half-peak angle is 10° as can be seen from the image.

[0059] This demonstrates that, without moving the reflector cup or adding new structural components, the illumination distance and angle of the lamp can be changed simply by controlling the switching of the first light source 2 and the second light source 3. The presence of a reflective part 7 on the reflective surface enhances the aesthetic appeal of the light spot.

[0060] like Figure 4 , Figure 14 As shown, the reflective portion 7 is distributed in a ring shape on the reflective surface 13. The reflective portion 7 includes several concentric spherical base circles 71 formed on the reflective surface 13. Specifically, the base circles 71 can be distributed in a circular array on the reflective surface 13. In this technical solution, since the reflective portion 7 includes several concentric spherical base circles 71, the spherical shape of the base circles 71 can change the reflection angle of the light. Each base circle 71 is a reflective unit, and the numerous reflective units are distributed in a ring shape on the reflective surface 13, thereby changing the angle of the light projected there, and thus reflecting the light to the interval region 6 to increase the luminous flux of the interval region 6, thereby improving the brightness and luminance.

[0061] Among them, such as Figure 14 ,like Figure 15 As shown, two adjacent base circles 71 in the same ring partially overlap, and two adjacent base circles 71 in two adjacent rings also partially overlap. Because of this partial overlap, the distance between adjacent base circles 71 is reduced, resulting in more base circles 71 distributed in the reflective part 7. This allows for the acquisition of more reflective base circles 71 with different curvatures, leading to better light mixing, avoiding the phenomenon of light spots appearing in chip imaging, and enhancing the light reflection effect.

[0062] Furthermore, the radius of base circle 71 is r, and the distance between the centers of two corresponding base circles 71 in two adjacent circles is D, as follows: Figure 15 As shown, the centers of the two base circles 71 in two adjacent rings are points E and F, respectively, where the distance between EF is the distance D between the corresponding two base circles in the two adjacent rings; the center distance between two adjacent base circles 71 in the same ring is d, as shown. Figure 16 As shown, the centers of the two base circles 71 in the same circle are points G and H, respectively, where the distance between GH is the center-to-center distance d between two adjacent base circles 71 in the same circle.

[0063] The radius r of the base circle 71 is in the range of 0.5 mm. <r<2.2mm。

[0064] In addition, the center distance D is in the range of 0.04mm. <D<r。

[0065] The center-to-center distance d is in the range of 0.05 mm. <d<1mm。

[0066] In addition, the base circles 71 of two adjacent rings are concentric along the circumference array, and the number of base circles 71 on the same ring 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 ring.

[0067] The vertical height between the light inlet 11 and the light outlet 12 is h. The reflective part 7 extends from the position of the light outlet 11 toward the light outlet 12 to the middle position of the reflective surface 13. The vertical height between the reflective part 7 and the light inlet 11 is P, where P = h * 0.6 * tan30°.

[0068] Example 2

[0069] The difference from Embodiment 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 optical device 1 is i, the height of the optical device 1 is h (i.e., the vertical distance between the light inlet 11 and the light-emitting part 12), and the aperture of the light-emitting part 12 is k. 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 A schematic diagram of the generatrix and coordinate system of the optical device's cross-section is provided. Functional relationships are established to derive the generatrix of the reflecting surface 13. The functional relationship of the generatrix is ​​as follows:

[0070]

[0071] Furthermore, points are taken in the first quadrant of the coordinate system, and the aforementioned quadratic curve is solved. The quadratic curve is the generatrix of the reflecting surface 13 of the optical device 1. Rotating the quadratic curve around the Y-axis yields the reflecting surface 13 of the reflector cup, which is a smooth mirror surface. The range of y is i≤y≤i+h. The diameters of the first light source 2 and the second light source 3 are Φ, and the diameter k of the light-emitting part 12 of the optical device 1 is 5.5 to 7.2 times the diameter of Φ. The height h of the optical device 1, the diameter k of the light-emitting part 12 of the reflector, and the vertical distance i between the light-emitting plane of the package (the light-emitting surfaces of the first light source 2 and the second light source 3) and the light-entry hole at the bottom of the optical device 1 conform to the following mathematical relationship: h=0.7*ki.

[0072] Example 3

[0073] The difference from Example 1 is that, as Figure 21 As shown, the optical device 1 is a lens. A convex lens incident surface 14 is formed on the top of the lens facing the light inlet 11. The light emitting part 12 includes a convex lens exit surface 121 formed on the top of the lens and facing the convex lens incident surface 14, and a reflected light exit surface 122. The reflected light exit surface 122 is located on the top of the lens and on the outer periphery of the convex lens exit surface 121. A refractive surface 15 is formed on the lens and on the peripheral surface of the light inlet 11. A reflective surface 13 is formed on the inner peripheral side of the lens, that is, on the outer peripheral side of the light inlet 11.

[0074] In this embodiment, the convex lens portion of the lens is located at the center of the lens and directly above the light inlet 11, with its focal point coinciding with the center point of the light-emitting plane of the first light source 2. The reflective surface 13 of the lens is located on the outer ring of the light inlet 11, forming a bowl shape that wraps upwards. The convex lens exit surface 121 and the reflected light exit surface 122 are both located at the top of the lens. When the control circuit controls the first light source 2 to light up (see optical path diagram...), Figure 22 Part of the incident light rays, after being deflected by the convex lens, emerge as parallel light from the exit surface 121 of the convex lens; another part of the incident light rays, after being refracted by the refractive surface 15 and reflected by the reflective surface 13, emerges from the reflected light exit surface 122, and the emerging light rays are also parallel light rays. All the emerging light rays reach the irradiated surface to form a small, approximately circular light spot. The illuminance gradient at each point on the light spot changes very little. The spatial distribution of the light rays is expressed in the light distribution curve (see...). Figure 24 From the diagram, we can see that the half-peak angle is 10°. When the control circuit causes the second light source 3 and the first light source 2 to emit light simultaneously, the light can be discussed in two parts. The optical path of the light emitted by the first light source 2 is consistent with that described above. The optical path diagram of the light emitted by the second light source 3 is shown below. Figure 23After the second light source 3 is refracted by the refractive surface 15 and then reflected by the reflective surface 13, part of the light will exit non-perpendicularly through the reflected light exit surface 122, and part of the light will enter the convex lens section after being reflected by the reflective surface 13, and then exit non-perpendicularly from the convex lens exit surface 121. The multiple non-parallel beams eventually reach the illumination surface and together with the light spot formed by the first light source 2, form a large, approximately circular light spot. The illuminance gradient varies greatly at different points on the light spot, and there is a possibility of a steep drop in the illuminance gradient. The spatial distribution of the light is expressed in the light distribution curve (see...). Figure 25 From the diagram, we can see that the half-peak angle is 45°. In summary, without moving the reflector or adding new structural components, we can change the lighting effect of the lamp simply by controlling the switching of the first light source 2 and the second light source 3.

[0075] Among them, the incident surface 14 of the convex lens, the exit surface 121 of the convex lens, the refractive surface 15, the reflecting surface 13, and the exit surface 122 of the reflected light are all curved surfaces.

[0076] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A reflector assembly that uses a multi-chip light source to modify the illumination effect, characterized in that, The device includes an optical device (1) and a first light source (2) and a second light source (3) that are independently controlled. Multiple second light sources (3) are provided, and each second light source (3) is arranged around the first light source (2). The optical device (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). At least one reflective surface (13) is formed on the optical device (1). The reflective surface (13) is used to project the light emitted by the first light source (2) and the second light source (3) from the light inlet (11) through the light outlet (12).

2. The reflector assembly for altering the illumination effect using a multi-chip light source according to claim 1, characterized in that, The optical device (1) is a reflector cup, the light-emitting part (12) is a light-emitting port, and the reflective surface (13) is formed on the inner peripheral wall of the reflector cup.

3. The reflector assembly for altering the illumination effect using a multi-chip light source according to claim 2, characterized in that, 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-emitting part (12), and the light emitted by the second light source (3) forms a second light spot (5) through the light-emitting part (12). An interval region (6) is formed between the first light spot (4) and the second light spot (5). A reflective part (7) is formed on the reflective surface (13) along its circumference to reflect part of the light emitted by the first light source (2) or the second light source (3) toward the interval region (6).

4. The reflector assembly for altering the illumination effect using a multi-chip light source according to claim 3, characterized in that, The reflective portion (7) is distributed in a ring shape on the reflective surface (13), and the reflective portion (7) includes several spherical base circles (71) formed on the reflective surface (13).

5. The reflector assembly for altering the illumination effect using a multi-chip light source according to claim 4, characterized in that, The two adjacent base circles (71) in the same ring partially overlap, and the two adjacent base circles (71) in two adjacent rings partially overlap.

6. The reflector assembly for altering the illumination effect using a multi-chip light source according to claim 4, characterized in that, The base circles (71) of two adjacent rings are concentric along the circumference array. The number of base circles (71) on the same ring 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 ring.

7. The reflector assembly for altering the illumination effect using a multi-chip light source according to claim 4, characterized in that, The vertical height between the light inlet (11) and the light outlet (12) is h. The reflective part (7) extends from the position of the light outlet (12) toward the middle position of the reflective surface (13). The vertical height between the reflective part (7) and the light inlet (11) is P, where P = h * 0.6 * tan30°.

8. The reflector assembly for altering the illumination effect using a multi-chip light source according to claim 2, 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 surface and the light inlet (11) is i, the height of the optical device (1) is h, and the aperture of the light-emitting part (12) is k.

9. The reflector assembly for altering the illumination effect using a multi-chip light source according to claim 1, characterized in that, The optical device (1) is a lens. The top of the lens has a convex lens incident surface (14) facing the light inlet (11). The light emitting part (12) includes a convex lens exit surface (121) located on the top of the lens and facing the convex lens incident surface (14) and a reflected light exit surface (122). The reflected light exit surface (122) is located on the top of the lens and on the outer periphery of the convex lens exit surface (121). A refractive surface (15) is formed on the lens and on the peripheral surface of the light inlet (11). The reflective surface (13) is formed on the inner periphery of the lens.

10. The reflector assembly for altering the illumination effect using a multi-chip light source according to claim 9, characterized in that, The incident surface (14), exit surface (121), refractive surface (15), reflective surface (13), and exit surface (122) of the reflected light are all curved surfaces.

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