Lighting module and lamp

Abstract

The present invention discloses a lighting module and a lamp, comprising: a light source assembly, the light source assembly comprising a first light source and a light distribution element; a reflective element, which is arranged in a non-contact manner with the light source assembly, and the reflective element has a reflective surface. In the embodiment of the present invention, the light emitted by the point light source is optically configured to form parallel light, which is irradiated on the reflective element to form a light spot, thereby achieving the lighting requirements of a smaller light-emitting surface, high power, and small angle of the overall light source, replacing a multi-light source integrated array with a high-power single light source, simplifying the system structure while avoiding mixed light interference, thereby simulating the sun scene in the sky.

Description

Technical Field

[0001] The present invention relates to the field of lighting, and in particular to a lighting module and a lamp. Background Art

[0002] The LED lamp is an electroluminescent semiconductor material chip, which is solidified onto a bracket with silver glue or white glue, and then connected to the chip and circuit board with silver wire or gold wire, and sealed with epoxy resin on all sides. It is widely used because of its energy saving, environmental protection, long life, and changeable colors.

[0003] In recent years, the design requirements of LED lighting have shifted from pursuing higher optical efficiency and achieving precise light distribution to providing higher lighting comfort and getting closer to the lighting effect of natural light. However, existing lighting equipment cannot achieve the visual effect of natural sunlight lighting. Summary of the invention

[0004] The embodiments of the present invention provide a lighting module and a lamp to solve the problem that the existing lighting equipment cannot achieve the visual effect of natural sunlight lighting.

[0005] In order to solve the above-mentioned technical problems, the present invention is achieved as follows:

[0006] In a first aspect, a lighting module is provided, comprising:

[0007] A light source assembly, the light source assembly comprising a first light source and a light distribution element, the first light source is arranged at the bottom of the light distribution element, the light distribution element is configured to receive the outgoing light of the first light source and optically configure the outgoing light, and the configured outgoing light is emitted from the light emitting surface of the light source assembly; wherein the first light source is a point light source;

[0008] The reflective element is arranged non-contacting with the light source assembly, and has a reflective surface, which is arranged non-parallel to the light emitting surface of the light source assembly. The reflective element is configured to receive the light after being configured by the light distribution element and form a light spot on the reflective surface.

[0009] Furthermore, the reflecting surface is parabolic.

[0010] Furthermore, the generatrix on the reflection surface satisfies the Bezier curve. Furthermore, it also includes: an aperture, which is arranged between the light distribution element and the reflection element, and is configured to filter part of the light after being configured by the light distribution element, wherein the part of the light is the light outside the preset range.

[0011] Furthermore, the light emitted from the exit surface of the light source assembly forms a cylindrical light beam after passing through the aperture, and forms a circular light spot on the reflecting surface after passing through the reflecting element, and the area of ​​the circular light spot is larger than the cross-sectional area of ​​the cylindrical light beam formed after passing through the aperture.

[0012] Furthermore, the light distribution element collimates the outgoing light of the first light source, and the light distribution element has a light incident surface and a light emitting surface, and the light emitting surface is non-parallel to the light incident surface.

[0013] Furthermore, after the light distribution element is configured, the angle between the light emitted from the light emitting surface and the normal line of the light emitting surface satisfies the following relationship:

[0014]

[0015] Wherein, I is the angle between the light emitted from the light emitting surface of the light distribution element and the optical axis; I k is the angle between the kth light ray emitted from the light emitting surface of the light distribution element and the optical axis; n is the number of light rays.

[0016] Furthermore, the light distribution element is symmetrical along the optical axis, and includes: a first end face, a second end face arranged opposite to the first end face, and an outer surface, the outer surface is in a bowl shape; the first end face is a light emitting surface, the second end face is a light incident surface, and the outer surface guides light from the second end face to the first end face.

[0017] Furthermore, the second end surface is a depression extending inward from the bottom of the bowl, the inner surface of the depression is an arc surface axially bent toward the optical axis, and the depression is symmetrical along the optical axis.

[0018] Furthermore, the light distribution element further comprises: a hole located on the first end surface, the hole is symmetrical along the optical axis, and the interior of the hole is filled with a light absorbing substance.

[0019] Furthermore, it also includes a box body that accommodates the light source assembly, the reflective element and the aperture.

[0020] Furthermore, a heat sink is included, and the heat sink is arranged on a side of the first light source away from the reflective element.

[0021] In a second aspect, a lamp is provided, comprising the lighting module, a shell and a mask as described in any one of the above items, wherein the shell and the mask are assembled, the lighting module is installed outside the shell, and the light spot formed by the lighting module on the reflective element is visible through the mask.

[0022] Furthermore, the face mask is a light-guiding element, and the light-guiding element has a light-entering surface and a light-emitting surface; wherein the light-entering surface and the light-emitting surface are arranged non-parallel.

[0023] Furthermore, the lamp also includes a second light source module, which includes a second light source, and the second light source emits light of a preset color. The second light source module is at least arranged on one side of the light guide element, wherein the light incident surface of the light guide element is configured to receive the outgoing light of the second light source, and the outgoing light is emitted from the light exit surface of the light guide element after multiple total reflections inside the light guide element.

[0024] Furthermore, the color simulates the color of the blue sky.

[0025] In a third aspect, a lamp is provided, comprising the lighting module described in any one of the above items, a second light source module, a shell and a mask, wherein the lighting module is arranged outside the shell, the shell and the mask are assembled, and the second light source module is arranged at least on one side of the mask;

[0026] The outgoing light of the first light source of the lighting module forms a light spot on the reflective element after being configured by the light distribution element, and is visible through the mask;

[0027] The outgoing light of the second light source of the second light source module is presented on the light-emitting surface of the mask after passing through the mask.

[0028] In an embodiment of the present invention, a light distribution element is provided on the first light source so that the outgoing light of the first light source is irradiated onto the reflective element after being configured by the light distribution element to form a light spot. In an embodiment of the present invention, after the light emitted by the light source passes through the configuration of the light distribution element and the reflective element, a light spot is formed on the reflective surface of the reflective element, that is, the light emitted by the point light source is optically configured to form parallel light, which is irradiated onto the reflective element to form a light spot, thereby achieving the lighting requirements of a smaller light-emitting surface, high power, and small angle of the overall light source, replacing a multi-light source integrated array with a high-power single light source, simplifying the system structure while avoiding mixed light interference, thereby simulating the sun scene in the sky. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0030] Figure 1 is a schematic diagram of a lighting module provided by an embodiment of the present invention;

[0031] Figure 2 is a cross-sectional view of a light distribution element provided by an embodiment of the present invention;

[0032] Figure 3 is a schematic diagram of a Bezier curve provided by an embodiment of the present invention;

[0033] Figure 4 is a schematic diagram of a lamp provided by an embodiment of the present invention;

[0034] Figure 5 is another schematic diagram of a lamp provided by an embodiment of the present invention;

[0035] Figure 6 is a schematic diagram of the overall structure of a lamp provided by an embodiment of the present invention;

[0036] Figure 7 is another overall structural schematic diagram of a lamp provided by an embodiment of the present invention;

[0037] Among them, 1-first light source; 2-light distribution element; 3-aperture; 4-reflection element; 5-light guiding element; 6-second light source; 7-heat sink; 8-housing; 9-mask; 21-first end face; 22-second end face; 23-outer surface; 24-hole. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The embodiments of the present application provide a lighting module and a lamp to achieve a lighting effect similar to the sun shining through a skylight.

[0040] like Figure 1 FIG. 1 is a schematic diagram of a lighting module provided by an embodiment of the present application. The lighting module specifically includes: a light source assembly and a reflective element 4 .

[0041] Specifically, the light source assembly includes a first light source 1 and a light distribution element 2, wherein the first light source 1 is arranged at the bottom of the light distribution element 2, and the light distribution element 2 is configured to receive the outgoing light of the first light source 1 and optically configure the outgoing light, and the configured outgoing light is emitted from the light emitting surface of the light source assembly, wherein the first light source is a point light source. The reflective element 4 is arranged non-contactingly with the light source assembly, and the reflective element 4 has a reflective surface, and the reflective surface is arranged non-parallel to the outgoing surface of the light source assembly, and the reflective element 4 is configured to receive the light configured by the light distribution element 2 and form a light spot on the reflective surface.

[0042] In the embodiment of the present application, a light distribution element is provided on the first light source, so that the outgoing light of the first light source is irradiated onto the reflective element after being configured by the light distribution element to form a light spot. In the embodiment of the present invention, after the light emitted by the light source passes through the configuration of the light distribution element and the reflective element, a light spot is formed on the reflective surface of the reflective element, that is, the light emitted by the point light source is formed into parallel light after optical configuration, and irradiated onto the reflective element to form a light spot, thereby achieving the lighting requirements of a smaller light-emitting surface, high power, and small angle of the overall light source, replacing the integrated array of multiple light sources with a high-power single light source, simplifying the system structure while avoiding mixed light interference, thereby simulating the sun scene in the sky.

[0043] In a possible implementation manner of the present application, the light distribution element 2 optically configures the outgoing light of the first light source to configure the divergent light emitted by the point light source into parallel light.

[0044] The first light source is a light source with a small light-emitting surface and high power, for example, a high-power white light LED lamp with model CBT-90-W57H produced by Luminus, a COB light source, etc.

[0045] The light distribution element 2 may be a TIR lens, a lens with an arc-shaped surface, a lens of other shapes, or other optical elements, as long as it can configure the divergent light emitted by a point light source into parallel light.

[0046] In a specific embodiment of the present application, Figure 2 The figure shows a cross-sectional view of a light distribution element. The shape of the light distribution element 2 is symmetrical along the optical axis. The light distribution element 2 has a first end face 21, a second end face 22 arranged opposite to the first end face 21, and an outer surface 23, wherein the outer surface 23 is in a bowl shape. The first end face 21 is a light emitting surface, the second end face 22 is a light incident surface, and the outer surface 23 is configured to guide light from the second end face 22 to the first end face 21.

[0047] The specific shape of the second end surface 22 is as follows: the second end surface 22 extends inward from the bottom of the bowl to form a depression, the inner surface of the depression is an arc surface that is axially bent toward the optical axis, and the depression is symmetrical along the optical axis.

[0048] In a possible implementation of the present application, the light distribution element 2 is configured to collimate the outgoing light of the first light source 1, and the light distribution element 2 has a light incident surface and a light emitting surface, wherein the light emitting surface is non-parallel to the light incident surface.

[0049] In a possible implementation of the present application, the angle between the light emitted from the light emitting surface after the light distribution element 2 is configured and the normal line of the light emitting surface satisfies the following relationship:

[0050]

[0051] Wherein, I is the angle between the light emitted from the light emitting surface of the light distribution element and the optical axis; I k is the angle between the kth light ray emitted from the light emitting surface of the light distribution element and the optical axis; n is the number of light rays.

[0052] That is, the divergent light emitted by the first light source 1 is refracted and reflected in the light distribution element 2 and then emitted from the light emitting surface of the light distribution element 2, and the angle between the emitted light and the normal of the light emitting surface is less than 10°.

[0053] In the embodiment of the present application, a light distribution element is arranged so that the angle between the light emitted by the first light source on the light emitting surface of the configuration element and the normal of the light emitting surface is less than 10°, so that the light emitted from the light emitting surface is as close to collimated as possible.

[0054] Preferably, I is set to 0°.

[0055] In a possible implementation manner of the present application, the material of the light distribution element 2 may be PC (Polycarbonate), PMMA (polymethyl methacrylate), or other materials.

[0056] In a possible implementation of the present application, Figure 2 As shown, the light distribution element 2 further includes: a hole 24 located at the first end surface 21. The hole 24 is symmetrical along the optical axis, and the interior of the hole 24 is filled with a light absorbing substance.

[0057] The light-absorbing material may be a black silicone material or other materials as long as it is opaque.

[0058] In the embodiment of the present application, a small hole is provided on the light emitting surface of the light distribution element, and the hole is filled with a light absorbing material, which can absorb the light from the first light source passing through the hole, thereby avoiding the generation of stray light.

[0059] In a possible implementation of the present application, the lighting module further includes an aperture 3. The aperture 3 is disposed between the light distribution element 2 and the reflective element 4, and is configured to filter part of the light after being configured by the light distribution element 2. Part of the light refers to light outside a preset range.

[0060] In the embodiment of the present application, the aperture limits the outgoing light after being configured by the configuration element to a preset range, that is, the stray light outside the preset range is filtered out, so that the light after passing through the aperture is a cylindrical light beam.

[0061] Furthermore, the light spot formed by the outgoing light after being filtered by the aperture 3 and incident on the reflective element is circular.

[0062] That is, a circular light spot similar to sunlight is formed on the reflective element, and the area of ​​the circular light spot is larger than the cross-sectional area of ​​the cylindrical light beam formed after passing through the aperture.

[0063] In a possible implementation manner of the present application, in order to optimize the light emitted by the first light source 1 , the reflective surface of the reflective element 4 is parabolic.

[0064] Furthermore, the generatrix on the reflection surface satisfies a Bezier curve.

[0065] Specifically, the present invention proposes a method of modeling with Bezier surfaces to comprehensively optimize the light emitted by the extended light source. Bezier curves, also known as Bezier curves or Bezier curves, are mathematical curves used in two-dimensional graphics applications. It creates and edits graphics by controlling four points on the curve (a starting point, an end point, and two separated middle points). Among them, the control line located in the center of the curve plays an important role. This line is virtual, intersecting with the Bezier curve in the middle, and the two ends are control endpoints. When the endpoints at both ends are moved, the Bezier curve changes the curvature of the curve (the degree of bending); when the middle point is moved (that is, the virtual control line is moved), the Bezier curve moves evenly with the starting point and the end point locked. The Bezier curve is continuous as a whole, with relatively few control points, and the free-form surface constructed by rotating it along the central axis is very suitable for light optimization.

[0066] Based on this initial model, multiple starting points are used on the extended light source, and the aperture of the reflective system is also sampled considering the central and edge luminous points, and ray tracing is performed. For the five sampling points of the luminous surface and the five sampling points of the aperture surface, a total of 25 rays, comprehensive collimation optimization is performed.

[0067] The Bessel function relationship is shown in the following formula. Four control points (P0, P1, P2, P3) are used to control the shape of the curve. Figure 3 The Bezier curve is shown.

[0068] B(t)=P0(1-t) 3 +3P1t(1-t) 2 +3P2t 2 (1-t)+P3t 3 ,t∈[0,1]

[0069] Among them, B(t) is the Bezier function; P0 is the coordinate of the starting point of the cubic Bezier curve; P1 and P2 are the coordinates of the control points respectively; P3 is the coordinate of the end point; t is the velocity of the curve.

[0070] In a possible implementation of the present application, Figure 1As shown, the lighting module further includes a heat sink 7 , which is arranged on a side of the first light source 1 away from the reflective element 4 .

[0071] In the embodiment of the present application, a heat sink is disposed below the first light source to discharge the heat emitted by the first light source, thereby greatly extending the life of the light source, reducing the number of replacements, and enhancing the user experience.

[0072] In a possible implementation manner of the present application, the lighting module further includes a box body that accommodates the light source assembly, the reflective element and the aperture.

[0073] The present application also provides a lamp, such as Figure 4-7 As shown, the lamp includes: any of the above-mentioned lighting modules, a shell 8 and a mask 9.

[0074] Among them, the shell 8 is arranged on the mask 9, the lighting module is installed outside the shell 8, and the light spot formed by the lighting module on the reflective element 4 is visible through the mask 9. That is, the shell is covered above the light-emitting surface of the mask, and the light spot on the reflective surface of the reflective element 4 can be seen through the light-emitting surface. In the embodiment of the present application, by arranging the lighting module outside the shell and arranging the shell cover on the mask, the light spot formed on the reflective element of the lighting module can be seen through the light-emitting surface of the mask, creating a scene similar to the sun spot.

[0075] In a possible implementation of the present application, the mask 9 is a light guide element 5, and the light guide element 5 has a light incident surface and a light emitting surface, wherein the light incident surface and the light emitting surface are arranged non-parallel.

[0076] In a possible implementation manner of the present application, the lamp further includes: a second light source module, the second light source module includes a second light source 6, and the second light source 6 emits light of a preset color.

[0077] The light emitted by the second light source may be light of any color. The color of the light may be a fixed color or a plurality of non-fixed colors, which may be set according to the needs of the user.

[0078] Specifically, the preset color is a color that simulates the blue sky.

[0079] The second light source module is arranged on two opposite sides of the light guide element 5. The light incident surface of the light guide element 5 is configured to receive the outgoing light of the second light source 6, and the outgoing light is emitted from the light exit surface of the light guide element after multiple total reflections inside the light guide element 5. In the embodiment of the present application, the light emitted by the second light source is incident into the light guide element from the side of the light guide element, and is subjected to multiple total reflections in the light guide element, so that the light of the second light source can be presented on the entire light guide element, and the user can see the scene presented by the second light source on the light guide element. If the light is blue, a scene similar to the blue sky can be seen on the light guide element, that is, the mask.

[0080] In a specific embodiment, the white light emitted by the first light source is emitted from the light-emitting surface of the configuration element after being configured by the configuration element, and the emitted light is filtered by the aperture to obtain a cylindrical light beam, which is irradiated onto the reflective element, forming a circular light spot on the reflective surface of the reflective element, and then reflected through the light guide element (i.e., the mask), and the user can see the circular light spot through the mask, thereby creating a sunlight emitted from the sun at an infinite distance shining into the room. At the same time, the blue light simulating the sky emitted by the second light source is irradiated from the side into the light guide element (i.e., the mask), and after multiple total reflections in the light guide element, a scene similar to the blue sky is presented from the light-emitting surface of the light guide element, and the user can see the blue sky on the light-emitting surface of the light guide element.

[0081] In an embodiment of the present application, the sun is simulated by a first light source, and the blue sky is simulated by a second light source. The light emitted by the two light sources are combined on a light-guiding element to present a scene in which sunlight shines into the room through the blue sky. Since the first light source is a light spot formed on the reflective element, the user is given a feeling that the sun is infinitely far away, and the sky effect can be felt in a limited space, satisfying people's physiological and psychological needs.

[0082] The present application also provides a lamp, which comprises: any of the above-mentioned lighting modules, a second light source module, a housing 8 and a mask 9. The lighting module is arranged outside the housing 8, the housing 8 is covered on the mask 9, and the second light source module is arranged on opposite sides of the mask.

[0083] The outgoing light of the first light source of the lighting module forms a light spot on the reflective element after being configured by the configuration element, and is visible through the mask 9 .

[0084] The outgoing light of the second light source module is displayed on the light-emitting surface of the mask 9 after passing through the mask 9 .

[0085] In the embodiment of the present application, the light spot formed by the first light source on the reflective element can be seen through the mask, and the light presented by the second light source on the mask can also be seen. If the light emitted by the first light source is white light and the light emitted by the second light source is blue light, a scene of sunlight shining into the room through the blue sky can be presented. Since the first light source is a light spot formed on the reflective element, it presents a feeling that the sun is infinitely far away to the user, and the sky effect can be felt in a limited space, meeting people's physiological and psychological needs.

[0086] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0087] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A lighting module, characterized in that: include: A light source assembly, the light source assembly comprising a first light source and a light distribution element, the first light source is arranged at the bottom of the light distribution element, the light distribution element is configured to receive the outgoing light of the first light source and optically configure the outgoing light, and the configured outgoing light is emitted from the light emitting surface of the light source assembly; The first light source is a point light source; A reflective element is arranged non-contacting with the light source assembly, the reflective element has a reflective surface, the reflective surface is arranged non-parallel to the light emitting surface of the light source assembly, and the reflective element is configured to receive the light after being arranged by the light distribution element and form a light spot on the reflective surface; The light distribution element is symmetrical along the optical axis, and comprises: a first end face, a second end face arranged opposite to the first end face, and an outer surface, wherein the outer surface is in a bowl shape; the first end face is a light emitting surface, the second end face is a light incident surface, and the outer surface guides light from the second end face to the first end face; The second end surface is a depression extending inward from the bottom of the bowl, the inner surface of the depression is an arc surface axially bent toward the optical axis, and the depression is symmetrical along the optical axis; The light distribution element further includes: a hole located on the first end surface, the hole is symmetrical along the optical axis, the interior of the hole is filled with a light absorbing material; the center of the hole is collinear with the optical axis.

2. The lighting module according to claim 1, characterized in that: The reflecting surface is parabolic.

3. The lighting module according to claim 2, characterized in that: The generatrix on the reflection surface satisfies a Bezier curve.

4. The lighting module according to claim 1, characterized in that: Also includes: The aperture is disposed between the light distribution element and the reflective element, and is configured to filter part of the light after being configured by the light distribution element, wherein the part of the light is light outside a preset range.

5. The lighting module according to claim 4, characterized in that: The light emitted from the exit surface of the light source assembly forms a cylindrical light beam after passing through the aperture, and forms a circular light spot on the reflecting surface after passing through the reflecting element. The area of ​​the circular light spot is larger than the cross-sectional area of ​​the cylindrical light beam formed after passing through the aperture.

6. The lighting module according to claim 1, characterized in that: The light distribution element collimates the outgoing light of the first light source. The light distribution element has a light incident surface and a light emitting surface. The light emitting surface is non-parallel to the light incident surface.

7. The lighting module according to claim 6, characterized in that: After the light distribution element is configured, the angle between the light emitted from the light emitting surface and the normal line of the light emitting surface satisfies the following relationship: in, I is the angle between the light emitted from the light emitting surface of the light distribution element and the optical axis; is the first light emitted from the light emitting surface of the light distribution element. k The angle between the ray and the optical axis; n is the number of rays.

8. The lighting module according to claim 4, characterized in that: It also includes a box body for accommodating the light source assembly, the reflective element and the aperture.

9. The lighting module according to claim 1, characterized in that: A heat sink is also included, and the heat sink is arranged on a side of the first light source facing away from the reflective element.

10. A lamp, characterized in that: It comprises the lighting module, shell and mask according to any one of claims 1 to 9, wherein the shell and the mask are assembled, the lighting module is installed outside the shell, and the light spot formed by the lighting module on the reflective element is visible through the mask.

11. The lamp according to claim 10, characterized in that: The face mask is a light guide element, and the light guide element has a light incident surface and a light emitting surface; wherein the light incident surface and the light emitting surface are arranged non-parallel.

12. The lamp according to claim 11, characterized in that The lamp also includes a second light source module, which includes a second light source, and the second light source emits light of a preset color. The second light source module is arranged on at least one side of the light guide element, wherein the light incident surface of the light guide element is configured to receive the outgoing light of the second light source, and the outgoing light is emitted from the light exit surface of the light guide element after multiple total reflections inside the light guide element.

13. The lamp according to claim 12, characterized in that: The preset color is a color that simulates the blue sky.

14. A lamp, characterized in that: The invention comprises the lighting module according to any one of claims 1 to 9, a second light source module, a shell and a mask, wherein the lighting module is arranged outside the shell, the shell and the mask are assembled, and the second light source module is arranged at least on one side of the mask; The outgoing light of the first light source of the lighting module forms a light spot on the reflective element after being configured by the light distribution element, and is visible through the mask; The outgoing light of the second light source of the second light source module is presented on the light-emitting surface of the mask after passing through the mask.

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