Optical components and optical devices

Abstract

The present invention discloses an optical assembly and an optical device, wherein the optical assembly includes a substrate, a lens and an optical component, wherein the substrate includes a mounting portion; the lens covers the mounting portion, the lens has a central axis, the central axis is perpendicular to the surface of the mounting portion, and the central cross section of the lens along the central axis is an arc-shaped surface; the optical component includes a first light-emitting chip located at the intersection of the central axis and the mounting portion, and a second light-emitting chip located between the first light-emitting chip and the periphery of the lens, and the first light-emitting chip and the second light-emitting chip are configured to be independently activated. The optical assembly of the technical solution of the present invention can realize flexible switching of multiple light-emitting angles.

Description

Technical Field

[0001] The present invention relates to the technical field of optical elements, and in particular to an optical component and an optical device. Background Art

[0002] The beam angle of an optical component refers to the angle between the light emitted by a light source and its central axis. It determines the light distribution and lighting effect. The required beam angle may vary in different application scenarios. For example, spotlights require a narrow beam angle to produce a concentrated beam, while ambient lighting requires a wider beam angle to provide uniform illumination. Therefore, optical components that can provide a variety of beam angles offer significant advantages in meeting diverse lighting needs.

[0003] Existing single LED lights typically consist of a light-emitting chip, a lens, and a substrate. The chip is mounted on the substrate, and a lens cover is positioned above the chip to control the direction of light emission. However, this structure has significant limitations. Because the positions of these components are fixed, especially the relative position between the chip and the lens cannot be adjusted, a single optical element can only produce a single beam angle. This fixed structural design makes it impossible for a single LED lamp to achieve multiple beam angles, making it difficult to adapt to the needs of different lighting scenarios. Summary of the Invention

[0004] The main purpose of the present invention is to solve the technical problem in the prior art that a single LED lamp cannot produce multiple light-emitting angles.

[0005] A first aspect of the present invention provides an optical assembly, comprising a substrate, a lens, and an optical component;

[0006] The substrate includes a mounting portion;

[0007] The lens covers the mounting portion, the lens has a central axis, the central axis is perpendicular to the surface of the mounting portion, and the central cross-section of the lens along the central axis is an arc-shaped surface;

[0008] The optical component includes a first light emitting chip located at an intersection of the central axis and the mounting portion, and a second light emitting chip disposed between the first light emitting chip and a periphery of the lens, wherein the first light emitting chip and the second light emitting chip are configured to be independently activated.

[0009] Optionally, the thickness of the lens gradually increases from the central axis toward the periphery of the lens.

[0010] Optionally, the lens includes an inner arcuate surface and an outer arcuate surface relative to each other, and the inner arcuate surface is arranged closer to the mounting portion relative to the outer arcuate surface;

[0011] The inner arc surface is a spherical surface, and the curvature of the outer arc surface gradually increases from the central axis toward the periphery of the outer arc surface.

[0012] Optionally, the color temperature of the first light-emitting chip and the color temperature of the second light-emitting chip are different.

[0013] Optionally, a plurality of the mounting portions are provided on the same side of the substrate;

[0014] The number of the lenses is the same as the number of the mounting portions so as to correspond one to one, and the lens covers are provided with corresponding mounting portions;

[0015] The number of the optical components is the same as the number of the mounting parts and corresponds one to one. The first light-emitting chip of each optical component is installed at the intersection of the central axis of the corresponding lens and the corresponding mounting part, and the second light-emitting chip of each optical component is installed between the central axis of the corresponding lens and the corresponding lens periphery.

[0016] Optionally, the lens includes a central light-concentrating portion and a peripheral diffusion portion, the central light-concentrating portion overlaps with the orthographic projection of the first light-emitting chip on the substrate, the peripheral diffusion portion is connected to the central light-concentrating portion and the substrate respectively, a light-concentrating microstructure is provided on the surface of the central light-concentrating portion, and a diffusion microstructure is provided on the surface of the peripheral diffusion portion;

[0017] The light-concentrating microstructure is used to refract the light irradiated on the central light-concentrating portion and converge it to the central axis, and the light-diffusing microstructure is used to refract the light irradiated on the peripheral light-diffusing portion and deviate it from the central axis.

[0018] Optionally, the light-concentrating microstructure includes a light-concentrating annular groove surrounding the central axis, the groove wall surface of the light-concentrating annular groove includes an inner light-concentrating annular surface and an outer light-concentrating annular surface opposite to each other, and the inner light-concentrating annular surface is arranged closer to the central axis relative to the outer light-concentrating annular surface; wherein,

[0019] The light-focusing outer annular surface is inclined in a direction close to the central axis from the bottom of the light-focusing annular groove to the groove opening, and the light-focusing inner annular surface is inclined in a direction perpendicular to the surface of the mounting portion or away from the central axis from the bottom of the light-focusing annular groove to the groove opening.

[0020] Optionally, the light-focusing inner annular surface and the light-focusing outer annular surface are both planes;

[0021] When the light-focusing inner annular surface is inclined in a direction away from the central axis from the bottom of the light-focusing annular groove to the groove mouth, the angle between the light-focusing inner annular surface and the central axis is smaller than the angle between the light-focusing outer annular surface and the central axis.

[0022] Optionally, the diffusion microstructure includes a diffusion annular groove surrounding the central axis, the groove wall surface of the diffusion annular groove includes a diffusion inner annular surface and a diffusion outer annular surface opposite to each other, and the diffusion inner annular surface is arranged close to the central axis relative to the diffusion outer annular surface; wherein,

[0023] The outer annular surface of the diffusion groove is inclined in a direction from the bottom of the diffusion annular groove to the groove opening, away from the central axis, and the inner annular surface of the diffusion groove is inclined in a direction perpendicular to the surface of the mounting portion or away from the central axis.

[0024] A second aspect of the present invention provides an optical device, comprising an optical assembly, the optical assembly comprising a substrate, a lens, and an optical component;

[0025] The substrate includes a mounting portion;

[0026] The lens covers the mounting portion, the lens has a central axis, the central axis is perpendicular to the surface of the mounting portion, and the central cross-section of the lens along the central axis is an arc-shaped surface;

[0027] The optical component includes a first light emitting chip located at an intersection of the central axis and the mounting portion, and a second light emitting chip disposed between the first light emitting chip and a periphery of the lens, wherein the first light emitting chip and the second light emitting chip are configured to be independently activated.

[0028] The technical solution provided by the embodiments of the present application has at least the following advantages:

[0029] When the first light-emitting chip (located on the central axis) is illuminated alone, due to its central position in the lens, light is emitted primarily through the central portion of the lens. This arrangement distributes light symmetrically around the lens, forming a uniform illumination pattern and creating a light distribution that is symmetrical about the central axis. When the second light-emitting chip (located between the first light-emitting chip and the lens edge) is illuminated alone, its light is emitted primarily through an off-center portion of the lens. This asymmetric arrangement results in light being concentrated primarily on one side of the lens, producing a directional, asymmetric light distribution. This distribution contrasts sharply with the symmetrical distribution when the first light-emitting chip is illuminated alone, providing a completely different illumination pattern. When the first and second light-emitting chips are illuminated simultaneously, the two different light distributions overlap and influence each other. The symmetrical light field provided by the central chip combines with the asymmetric light field provided by the edge chips to produce a more complex and unique light distribution. This combined effect provides users with a third unique lighting pattern, significantly different in both light intensity distribution and coverage than when each chip is illuminated alone.

[0030] The diversity of these light-emitting patterns is primarily determined by the shape of the lens and the position of the chip. The central cross-section of the lens along its central axis is curved, and the change in curvature from center to edge affects how light is refracted. Light sources in different locations produce different refraction effects when passing through different parts of the lens, resulting in different light field distributions. Furthermore, because the two chips can be activated independently, users can flexibly adjust the light-emitting pattern without having to replace lenses or use complex mechanical structures. This design not only overcomes the limitations of the single light-emitting mode of traditional single-LED lamps, but also avoids the cost and volume associated with using multiple LEDs or complex mechanical structures. It provides an efficient and flexible solution for diverse lighting needs, enabling the realization of a variety of different lighting effects within a single optical component. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0032] Figure 1 Schematic diagram of the structure of an optical component according to an embodiment of the present invention;

[0033] Figure 2 A cross-sectional view of an embodiment of an optical component of the present invention;

[0034] Figure 3 is a cross-sectional view of another embodiment of an optical component of the present invention;

[0035] Figure 4 This is the light intensity distribution diagram of the light after being refracted by the lens when the first light-emitting chip is lit alone;

[0036] Figure 5 This is a light distribution diagram when the first light-emitting chip is lit alone;

[0037] Figure 6 This is the light intensity distribution diagram of the light after being refracted by the lens when the second light-emitting chip is lit alone;

[0038] Figure 7 This is the light distribution diagram when the second light-emitting chip is lit alone;

[0039] Figure 8 The light intensity distribution diagram of the light after being refracted by the lens when the first light-emitting chip and the second light-emitting chip are lit at the same time;

[0040] Figure 9 This is a light distribution diagram when the first light-emitting chip and the second light-emitting chip are lit at the same time.

[0041] Description of Figure Numbers:

[0042] 1. Substrate; 11. Mounting portion; 2. Lens; 21. Central axis; 22. Inner arc-shaped surface; 23. Outer arc-shaped surface; 24. Central focusing portion; 241. Focusing microstructure; 241a. Focusing annular groove; 241b. Focusing inner annular surface; 241c. Focusing outer annular surface; 25. Peripheral diffusion portion; 251. Diffusion microstructure; 251a. Diffusion annular groove; 251b. Diffusion inner annular surface; 251c. Diffusion outer annular surface; 3. Optical component; 31. First light-emitting chip; 32. Second light-emitting chip.

[0043] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, and must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] An embodiment of the present application provides an optical component, which will be described in detail below with reference to the accompanying drawings.

[0048] Figure 1Schematic diagram of the structure of an optical component according to an embodiment of the present invention. Figure 2 A cross-sectional view of an embodiment of an optical component of the present invention, Figure 3 is a cross-sectional view of another embodiment of the optical component of the present invention, Figure 4 is the light intensity distribution diagram of the light after being refracted by the lens 2 when the first light emitting chip 31 is lit alone. Figure 5 is the light distribution diagram when the first light-emitting chip 31 is lit alone, Figure 6 is the light intensity distribution diagram of the light after being refracted by the lens 2 when the second light emitting chip 32 is lit alone. Figure 7 is the light distribution diagram when the second light emitting chip 32 is lit alone, Figure 8 is the light intensity distribution diagram of the light after being refracted by the lens 2 when the first light emitting chip 31 and the second light emitting chip 32 are lit at the same time. Figure 9 This is a light distribution diagram when the first light-emitting chip 31 and the second light-emitting chip 32 are lit at the same time.

[0049] It should be noted that in Figure 3 In FIG, there is a dotted line on each side of the central axis 21, and the area between the two dotted lines is the orthographic projection area of ​​the first light emitting chip 31. Figure 5 In the figure, the Y axis represents Figure 5 The Z axis represents the bottom-up direction in the viewing angle. Figure 5 The direction from left to right in the viewing angle, while the X-axis not shown represents Figure 5 From the outside to the inside of the viewing angle, the XZ plane is parallel to the top surface of the substrate 1. Figure 7 and Figure 9 The XYZ axis and Figure 5 Same, I will not go into details here. Figure 4 In the figure, line 1 indicates Figure 5 On the XY plane, the light emitted by the first light emitting chip 31 is symmetrical about the Y axis after being refracted by the lens 2, and line 2 indicates that the light emitted by the first light emitting chip 31 is symmetrical about the Y axis after being refracted by the lens 2. Figure 6 In the figure, line 3 indicates Figure 7 On the XY plane, the light emitted by the second light emitting chip 32 is symmetrical about the Z axis after being refracted by the lens 2, and line 4 indicates that almost all the light is emitted toward the negative direction of the Z axis. Figure 8 In the figure, line 5 indicates Figure 9 On the XY plane, the light emitted by the second light emitting chip 32 is symmetrical about the Y axis after being refracted by the lens 2, and line 6 indicates that a small part of the light is emitted in the positive direction of the Z axis, while most of the light is emitted in the negative direction of the Z axis.

[0050] In one embodiment of the present invention, see Figures 1 to 3 , the optical assembly includes a substrate 1, a lens 2 and an optical component 3;

[0051] The substrate 1 includes a mounting portion 11;

[0052] The lens 2 is covered with the mounting portion 11. The lens 2 has a central axis 21. The central axis 21 is perpendicular to the surface of the mounting portion 11. The central cross section of the lens 2 along the central axis 21 is an arc-shaped surface.

[0053] The optical component 3 includes a first light emitting chip 31 located at the intersection of the central axis 21 and the mounting portion 11 , and a second light emitting chip 32 disposed between the first light emitting chip 31 and the periphery of the lens 2 . The first light emitting chip 31 and the second light emitting chip 32 are configured to be independently activated.

[0054] Specifically, in this embodiment, the substrate 1 can be a printed circuit board (PCB), a metal substrate 1, a ceramic substrate 1, or other materials suitable for mounting light-emitting chips. The mounting portion 11 is an area on the substrate 1 specifically designed for mounting the optical component 3 and may include pads, grooves, or other fixing structures. The lens 2 can be an optical element made of optical-grade plastic (such as polycarbonate or acrylic) or glass. The central axis 21 is an imaginary straight line that defines the center of the lens 2. The light-emitting chip (first light-emitting chip 31 or second light-emitting chip 32) of the optical component 3 can be an LED chip, but may also include other types of light-emitting chips, such as organic light-emitting diodes (OLEDs) or quantum dot light-emitting diodes.

[0055] The first light-emitting chip 31 can be secured to the mounting portion 11 by welding, conductive adhesive, or crimping, ensuring that its position coincides with the intersection of the central axis 21. The second light-emitting chip 32 can also be secured between the first light-emitting chip 31 and the periphery of the lens 2 by welding, conductive adhesive, or crimping. The two light-emitting chips are connected via independent circuits or control systems to enable independently activated functions.

[0056] It should be explained that the central cross section mentioned above refers to any plane perpendicular to the substrate 1 and containing the central axis 21. On this plane, the outline of the lens 2 presents an arc shape.

[0057] It will be appreciated that in the optical assembly of the present invention, when the first light-emitting chip 31 (located on the central axis 21) is illuminated alone, due to its location at the center of the lens 2, light is primarily emitted through the central portion of the lens 2. This arrangement results in symmetrical light distribution around the lens 2, forming a uniform light pattern and creating a light field distribution that is symmetrical about the central axis 21. When the second light-emitting chip 32 (located between the first light-emitting chip 31 and the periphery of the lens 2) is illuminated alone, the light it emits is primarily emitted through the off-center portion of the lens 2. This asymmetric arrangement causes the light to be concentrated on one side of the lens 2, creating a directional, asymmetric light field distribution. This distribution contrasts sharply with the symmetrical distribution when the first light-emitting chip 31 is illuminated alone, providing a completely different light pattern. When the first and second light-emitting chips 31, 32 are illuminated simultaneously, the two different light field distributions overlap and influence each other. The symmetrical light field provided by the central chip combined with the asymmetric light field provided by the edge chips produces a more complex and unique light field distribution. This combined effect provides users with a third unique lighting mode, with light intensity distribution and coverage significantly different from when the individual chips are lit.

[0058] The diversity of this light-emitting mode is mainly determined by the shape of the lens 2 and the position of the chip. The central cross-section of the lens 2 along the central axis 21 is an arc-shaped surface, and the change in curvature from the center to the edge affects the refraction mode of the light. When light sources at different positions pass through different parts of the lens 2, different refraction effects will be produced, thereby forming different light field distributions. In addition, since the two chips can be activated independently, users can flexibly adjust the light-emitting mode without replacing the lens 2 or using complex mechanical structures. This design not only overcomes the limitations of the single light-emitting mode of traditional single LED lamps, but also avoids the cost and volume issues brought about by the use of multiple LED lamps or complex mechanical structures. It provides an efficient and flexible solution for diverse lighting needs, and can achieve a variety of different lighting effects in a single optical component.

[0059] In some embodiments, the number of the second light-emitting chips 32 may be two or more, and this application does not impose any specific limitation thereto.

[0060] Optionally, the thickness of the lens 2 gradually increases from the central axis 21 toward the periphery of the lens 2. Specifically, the thickness of the lens 2 refers to the distance from the inner surface to the outer surface of the lens 2. The periphery refers to the outer edge of the lens 2. The thickness of the lens 2 changes continuously, gradually increasing from the center outward.

[0061] When light passes through the thinner central portion of lens 2, the thinner material allows it to pass almost directly without significant refraction, helping to maintain the original direction and intensity of the light emitted by the first light-emitting chip 31. This design ensures that light in the central region maintains high transmittance and directionality, making it suitable for producing a concentrated light beam. In contrast, when light passes through the thicker peripheral portion of lens 2, it experiences a longer optical path. This extended optical path increases the distance the light travels within the lens 2 material, increasing the chances of interaction between the light and the material. During this process, the change in curvature of the lens 2 surface (caused by the increased thickness) produces a more significant refractive effect on the light. The gradual change in lens 2 thickness also smoothly adjusts the refractive effect in different regions, avoiding sudden changes in light direction, thereby reducing optical distortion and stray light. Through this design, the optical assembly can more precisely control the light paths from light-emitting chips at different locations, maintaining the directness of the central light while effectively directional-controlling the peripheral light. This thickness distribution allows a single lens 2 to simultaneously meet the diverse optical requirements of light sources at different locations, providing a structural foundation for achieving diverse light field distribution. Ultimately, this design enables the optical component to achieve multiple light-emitting modes in a single structure, producing both concentrated beams and wide-angle lighting effects. It can even produce more complex and flexible light field distributions by combining two chips to meet a variety of different lighting needs.

[0062] It should be noted that the design of the present application is not limited thereto. In other embodiments, the lens 2 may also be designed with a single thickness.

[0063] Optionally, the lens 2 includes an inner arcuate surface 22 and an outer arcuate surface 23 opposite to each other, and the inner arcuate surface 22 is arranged closer to the mounting portion 11 relative to the outer arcuate surface 23;

[0064] The inner arc surface 22 is a spherical surface, and the curvature of the outer arc surface 23 gradually increases from the central axis 21 toward the periphery of the outer arc surface 23 .

[0065] It's easy to understand that the inner curved surface 22 and the outer curved surface 23 are the two main optical surfaces of the lens 2. The inner curved surface 22 is the surface closest to the mounting portion 11 and directly faces the light-emitting chip; the outer curved surface 23 is the surface farther from the mounting portion 11 and faces the direction of light emission. A spherical surface is a curved surface with a constant radius of curvature.

[0066] First, the spherical design of the inner curved surface 22 provides an ideal initial refraction interface. When light is emitted from the light-emitting chip and enters the lens 2, the spherical surface provides consistent refraction for all incident angles. This spherical surface maximizes the preservation of the spatial distribution characteristics of the light from the chip, reducing distortion caused by initial refraction. In contrast, if the inner curved surface 22 also adopted a variable curvature, light in different areas might experience different degrees of initial refraction, potentially making subsequent light field control more complex and unpredictable. Second, designing the inner curved surface 22 as a spherical surface simplifies the complexity of the overall optical system. In optical design, simplifying certain elements can make the role of other elements more prominent and controllable. By maintaining the simplicity of the inner curved surface 22, designers can focus more on the curvature variations of the outer curved surface 23, making precise control of light easier to achieve. The gradual curvature variation of the outer curved surface 23 becomes the primary tool for light field shaping, allowing for more flexible adjustment of the refraction effect in different areas, thereby achieving precise control of light emitted by the light-emitting chip at different locations.

[0067] Furthermore, the spherical inner curved surface 22 improves manufacturing precision and efficiency. Spherical surfaces are a common and well-established shape in optical manufacturing, allowing for efficient production through standardized processes. In contrast, if the inner curved surface 22 also employed a variable curvature, manufacturing complexity and cost would be significantly increased. By simplifying the design of the inner curved surface 22, greater manufacturing precision control can be focused on the more critical outer curved surface 23.

[0068] Optionally, the color temperature of the first light-emitting chip 31 and the color temperature of the second light-emitting chip 32 are different from each other.

[0069] In this embodiment, color temperature is a parameter that describes the color characteristics of the light emitted by a light source, typically measured in Kelvin (K). Low color temperatures (e.g., 2700K-3000K) produce warm white light, similar to traditional incandescent lamps; high color temperatures (e.g., 5000K-6500K) produce cool white light, closer to natural daylight. It's important to emphasize that "different color temperatures" doesn't simply mean a slight difference; rather, it means a noticeable difference between the color temperatures of the two chips, typically at least 1000K, to produce a distinct visual effect in practical applications.

[0070] Light sources with different color temperatures can create diverse lighting atmospheres and visual effects. For example, activating only the chip with a lower color temperature produces a warm, comfortable light ideal for rest and relaxation; activating the chip with a higher color temperature, on the other hand, produces a bright, refreshing light that helps enhance alertness and productivity. Furthermore, by independently controlling two chips with different color temperatures, dynamic color temperature adjustment can be achieved. This dynamic adjustment simulates the changes in natural light throughout the day and helps regulate the human body's circadian rhythm. For example, gradually increasing the color temperature in the morning to aid wakefulness, while decreasing it in the evening to promote sleep. Finally, combining two chips with different color temperatures can produce color temperatures in between, enabling a wider range of color temperature adjustment.

[0071] Optionally, the substrate 1 has multiple mounting portions 11 on the same side surface;

[0072] The number of lenses 2 is the same as the number of mounting portions 11 and corresponds to each other. The lenses 2 are covered with corresponding mounting portions 11.

[0073] The number of optical components 3 is the same as the number of mounting portions 11 and corresponds one to one. The first light-emitting chip 31 of each optical component 3 is mounted at the intersection of the central axis 21 of the corresponding lens 2 and the corresponding mounting portion 11, and the second light-emitting chip 32 of each optical component 3 is mounted between the central axis 21 of the corresponding lens 2 and the periphery of the corresponding lens 2.

[0074] Specifically, the multiple mounting portions 11 may be arranged on the same side of the substrate 1 in various ways, such as a matrix arrangement, a ring arrangement, or an irregular arrangement designed according to specific needs.

[0075] Integrating multiple optical components 3 on a single substrate 1 significantly improves the integration and compactness of the overall lighting system. Compared to using multiple independent lighting units, this design can greatly reduce the required space and materials, reducing manufacturing and installation costs.

[0076] Optionally, the lens 2 includes a central light-concentrating portion 24 and a peripheral diffusion portion 25, wherein the central light-concentrating portion 24 overlaps with the orthographic projection of the first light-emitting chip 31 on the substrate 1, and the peripheral diffusion portion 25 is connected to the central light-concentrating portion 24 and the substrate 1, respectively. A light-concentrating microstructure 241 is provided on the surface of the central light-concentrating portion 24, and a diffusion microstructure 251 is provided on the surface of the peripheral diffusion portion 25.

[0077] The focusing microstructures 241 are used to refract the light irradiated on the central focusing portion 24 and converge it to the central axis 21 , and the diffusion microstructures 251 are used to refract the light irradiated on the peripheral diffusion portion 25 and deviate it from the central axis 21 .

[0078] Specifically, the central light-concentrating portion 24 and the peripheral light-diffusing portion 25 are two functionally distinct regions on the lens 2. The central light-concentrating portion 24 is located in the center of the lens 2, while the peripheral light-diffusing portion 25 is located in the periphery of the lens 2. The light-concentrating microstructures 241 and the light-diffusing microstructures 251 are special optical structures designed on the surfaces of these two regions to control the propagation direction of light.

[0079] The light-concentrating microstructure 241 has various embodiments. In specific implementations, in some embodiments, the light-concentrating microstructure 241 includes a light-concentrating annular groove 241a surrounding the central axis 21. The groove wall surface of the light-concentrating annular groove 241a includes an inner light-concentrating annular surface 241b and an outer light-concentrating annular surface 241c opposite to each other. The inner light-concentrating annular surface 241b is arranged closer to the central axis 21 relative to the outer light-concentrating annular surface 241c.

[0080] The focusing outer annular surface 241c is inclined in a direction close to the central axis 21 in the direction from the bottom of the focusing annular groove 241a to the groove opening, and the focusing inner annular surface 241b is inclined in a direction perpendicular to the surface of the mounting portion 11 or away from the central axis 21 in the direction from the bottom of the focusing annular groove 241a to the groove opening.

[0081] Specifically, the light-focusing annular groove 241a is an annular structure disposed around the central axis 21. The groove wall surface of the light-focusing annular groove 241a refers to the inner surface of the light-focusing annular groove 241a. It should be noted that in some embodiments, when there are multiple light-focusing annular grooves 241a, the light-focusing outer annular surface 241c, the groove bottom, and the groove opening in the sentence "the light-focusing outer annular surface 241c is in the direction from the groove bottom to the groove opening of the light-focusing annular groove 241a" are formed by the same light-focusing annular groove 241a, rather than by different light-focusing annular grooves 241a. Please note that

[0082] The present invention preferentially sets the focusing annular groove 241a on the outer arc surface 23 of the lens 2 to avoid damage to the inner arc surface 22, ensuring that the inner arc surface 22 can provide a consistent refraction effect for light at all incident angles (the beneficial effects brought about by this design have been discussed above and will not be repeated here).

[0083] The light-focusing outer annular surface 241c is inclined toward the central axis 21 from the bottom to the opening of the light-focusing annular groove 241a. This means that from the bottom to the opening, the outer annular surface gradually approaches the central axis 21. The light-focusing inner annular surface 241b has two possible configurations: it can be perpendicular to the surface of the mounting portion 11, forming a right-angled groove wall; or it can be inclined away from the central axis 21.

[0084] After emitting light from the first or second light-emitting chip 31 or 32, it first passes through the inner curved surface 22 of the lens 2 and enters the lens 2 material. Inside the lens 2, the light continues to propagate until it reaches the bottom wall of the light-focusing annular groove 241a. As the light passes through the bottom wall of the light-focusing annular groove 241a, it enters the air with a lower refractive index (the interior of the light-focusing annular groove 241a is filled with air), undergoing a first refraction. Once inside the groove, the light continues to propagate through the air. Some of the light will exit directly through the notch, while other parts will strike the outer light-focusing annular surface 241c. Because the outer light-focusing annular surface 241c is inclined toward the central axis 21 from the bottom to the notch of the light-focusing annular groove 241a, the light undergoes a second refraction upon encountering this inclined interface. This refraction deflects the light toward the central axis 21, thereby converging the light toward the central axis 21. This double refraction process is particularly important for light from the second light-emitting chip 32, which would otherwise diverge outward. This ingenious structural design effectively guides these rays toward the central axis 21. The design of the inner light-concentrating annular surface 241b also plays a significant role. When perpendicular to the surface of the mounting portion 11, it primarily maintains the original direction of light from the central region (particularly the first light-emitting chip 31). However, when tilted away from the central axis 21, it fine-tunes the light near the center, preventing it from excessively converging on the central axis 21 and thus forming a concentrated hotspot.

[0085] It is particularly noteworthy that the focusing inner annular surface 241b is not tilted in the direction away from the mounting portion 11 toward the central axis 21 because such a design may cause total internal reflection of incident light at certain angles (light moves within the lens 2 to the focusing inner annular surface and is reflected back into the interior of the lens 2 by the back surface of the focusing inner annular surface 241b), and is unable to leave the lens 2, thereby reducing light utilization efficiency.

[0086] In other embodiments of the light-concentrating microstructure 241 , an inclined wall may be provided on the outer arc-shaped surface 23 of the lens 2 , and the inclination direction of the inclined wall may be substantially the same as or completely the same as that of the light-concentrating outer arc-shaped surface 23 .

[0087] Optionally, the light-focusing inner annular surface 241b and the light-focusing outer annular surface 241c are both planes;

[0088] When the focusing inner annular surface 241b is inclined in the direction from the bottom of the focusing annular groove 241a to the groove mouth, away from the central axis 21, the angle between the focusing inner annular surface 241b and the central axis 21 is smaller than the angle between the focusing outer annular surface 241c and the central axis 21.

[0089] Specifically, the inner and outer light-focusing annular surfaces 241b and 241c are designed as flat surfaces, rather than curved surfaces. This flat design can be achieved through methods such as precision molding or CNC machining. Compared to curved designs, flat designs are easier to control precision during the manufacturing process and also simplify the calculation and prediction of light paths.

[0090] The "included angle" mentioned in this embodiment refers to the acute angle formed between the central axis 21 (hypothetically translated to intersect the planes) and these planes. When the light-focusing inner annular surface 241b is tilted away from the mounting portion 11 and in a direction away from the central axis 21, the angle formed between it and the central axis 21 is smaller than the angle formed between the light-focusing outer annular surface 241c and the central axis 21. This means that the degree of inclination of the light-focusing outer annular surface 241c relative to the central axis 21 is greater.

[0091] After light enters the focusing annular groove 241a from the lens 2 material, part of the light will encounter these two inclined planes. Because the inclination angle of the focusing inner annular surface 241b is relatively small, its effect on the light is relatively mild. When the light contacts the focusing inner annular surface 241b, it will be slightly refracted, slightly changing the light path. This fine-tuning effect helps prevent the light from excessively converging toward the center and avoids the formation of an overly concentrated hot spot near the central axis 21, while basically maintaining the original direction of the light from the central area. In contrast, the larger inclination angle of the focusing outer annular surface 241c enables it to produce a more significant refraction effect on the incident light. When the light encounters the focusing outer annular surface 241c, it will undergo a greater degree of refraction, causing the light to be significantly deflected toward the central axis 21.

[0092] The difference in the tilt angles of the two planes creates a progressive light control system. Light near the center undergoes less directional adjustment, while light away from the center experiences stronger refraction. This design not only achieves an overall focusing effect but also maintains the uniformity of the light field distribution. By fine-tuning the tilt angles of the two surfaces, different light field effects can be achieved, ranging from highly focused to slightly divergent, to meet various lighting needs. For example, increasing the tilt angle of the focusing outer annular surface 241c can enhance the focusing effect, while decreasing its tilt angle can achieve a more uniform light distribution.

[0093] Optionally, the diffusion microstructure 251 includes a diffusion annular groove 251a surrounding the central axis 21, and the groove wall surface of the diffusion annular groove 251a includes a diffusion inner annular surface 251b and a diffusion outer annular surface 251c opposite to each other, and the diffusion inner annular surface 251b is arranged closer to the central axis 21 relative to the diffusion outer annular surface 251c; wherein,

[0094] The outer annular diffusion surface 251c is inclined in a direction from the bottom of the diffusion annular groove 251a to the groove opening, away from the central axis 21, and the inner annular diffusion surface 251b is inclined in a direction perpendicular to the surface of the mounting portion 11 or away from the central axis 21 in the direction from the bottom of the diffusion annular groove 251a to the groove opening.

[0095] Specifically, the diffusion annular groove 251a is an annular structure disposed around the central axis 21, similar to the focusing annular groove 241a, but with different functions and design objectives. It should be noted that when there are multiple diffusion annular grooves 251a, the diffusion outer annular surface 251c, the bottom, and the notch in the "diffusion outer annular surface 251c from the bottom to the notch of the diffusion annular groove 251a" are formed by the same diffusion annular groove 251a, rather than by different diffusion annular grooves 251a.

[0096] When light enters the diffuser annular groove 251a from the lens 2 material, it first passes through the interface at the bottom of the diffuser annular groove 251a, undergoing a first refraction. The light then propagates within the diffuser annular groove 251a. Some light will exit directly from the top of the diffuser annular groove 251a, while other light will encounter the diffuser outer annular surface 251c and the diffuser inner annular surface 251b. Because the diffuser outer annular surface 251c is tilted away from the central axis 21, light will refract outward when it encounters this interface. This refraction directs light that would otherwise converge toward the center outward, achieving a light diffusion effect.

[0097] The design of the diffusing inner annular surface 251b also plays an important role. When perpendicular to the surface of the mounting portion 11, it can maintain the original direction of some light, preventing excessive diffusion. When it is also tilted away from the central axis 21, it can further enhance the diffusion effect, but the degree of tilt is generally less than that of the outer annular surface to maintain a certain degree of light control.

[0098] The advantage of this design is that it effectively disperses light that would otherwise be concentrated, creating a more even, wider-angle lighting effect. It is particularly well-suited for scenarios requiring large-area, soft illumination, such as indoor ambient lighting or display lighting. By carefully designing the inclination angles of the inner and outer ring surfaces, varying light field effects can be achieved, ranging from mild diffusion to highly uniform light. Furthermore, this structure reduces glare and improves visual comfort by converting direct light from intense light sources into softer, diffused light.

[0099] Furthermore, outward from the central axis 21, multiple light-focusing annular grooves 241a can be arranged, followed by multiple light-diffusing annular grooves 251a. This progressive layout achieves a smooth transition from highly focused light at the center to evenly diffused light at the edges. The width and depth of each groove can gradually increase outward from the central axis 21 (toward the periphery of the lens 2). For example, the innermost light-focusing groove may be 0.2 mm wide and 0.1 mm deep, while the outermost light-diffusing groove may be 0.5 mm wide and 0.3 mm deep. This design helps compensate for the increased distance light travels, ensuring a balanced optical effect across the entire surface of the lens 2.

[0100] Secondly, a special coating can be applied to the surface of the groove (light-focusing annular groove 241a or diffusion annular groove 251a) to enhance optical performance. A high-reflectivity metal coating, such as aluminum or silver, can be used on the outer annular surface of light-focusing annular groove 241a to improve light reflection efficiency and further enhance the light-focusing effect. For diffusion annular groove 251a, a microparticle diffusion coating, such as a polymer coating mixed with titanium dioxide or aluminum oxide particles, can be considered. This coating can increase light scattering on a microscopic scale, achieving more uniform light diffusion.

[0101] When the lens 2 is provided with a plurality of light-focusing annular grooves 241 a, the light-focusing annular groove 241 a closest to the periphery of the lens 2 among the plurality of light-focusing annular grooves 241 a is defined as the end light-focusing annular groove 241 a. Based on this embodiment, the present invention further provides a method for preparing an optical component. Specifically, the method for preparing the optical component includes:

[0102] S1. Provide a base plate, wherein the top surface of the base plate has a plurality of mounting portions 11, each of the mounting portions 11 being mounted with a first light-emitting chip 31 and a second light-emitting chip 32;

[0103] S2. Install an intermediate plate on the bottom plate, wherein the intermediate plate is provided with a plurality of mounting holes. The number of the plurality of mounting holes is the same as the number of the plurality of mounting portions 11 and corresponds one to one. The diameter of the mounting holes is greater than or equal to the longest dimension of the periphery of the lens 2 (when the lens 2 is spherical, the longest dimension is the diameter of the periphery of the lens 2; when the lens 2 is irregularly shaped, the longest dimension is the distance between the two farthest points on the periphery of the lens 2). The inner peripheral wall of the mounting holes and the top surface of the bottom plate jointly define a mounting groove.

[0104] S3, installing the plurality of lenses 2 in the mounting grooves respectively, with the bottom surface of the lens 2 abutting against the top surface of the base plate;

[0105] S4. Provide multiple moldings, which can be inserted into the end-light-focusing annular groove 241a. Insert one end of the molding into the end-light-focusing annular groove 241a, and make the bottom of the molding abut against the corresponding diffusion outer annular surface 251c of the end-light-focusing annular groove 241a, and make the end face of the molding abut against the bottom of the end-light-focusing annular groove 241a. Then, fix and bond the molding to the side of the middle plate facing away from the bottom plate.

[0106] Specifically, the bottom plate, the middle plate and the plurality of pressure strips in this method together constitute the substrate 1 mentioned above.

[0107] The optical component is prepared by this method, which utilizes the feature of the end focusing annular groove 241a on the lens 2. The pressure strip and the groove wall of the end focusing annular groove 241a are mutually limited to limit the lens 2, thereby preventing the lens 2 from moving in a direction perpendicular to the base plate or in a direction parallel to the base plate surface, thereby ensuring that the lens 2 is firmly installed.

[0108] Furthermore, in order to ensure the installation stability of the lens 2, in step S3, the bottom surface of the lens 2 is bonded to the top surface of the base plate, and the gap between the lens 2 and the inner peripheral wall of the corresponding mounting hole is filled with plastic material.

[0109] The present invention also proposes an optical device, which includes an optical component. The specific structure of the optical component refers to the above-mentioned embodiment. Since this optical device adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0110] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An optical component, characterized in that: include: A substrate (1), the substrate (1) comprising a mounting portion (11); A lens (2), wherein the lens (2) covers the mounting portion (11), the lens (2) has a central axis (21), the central axis (21) is perpendicular to the surface of the mounting portion (11), and the central cross section of the lens (2) along the central axis (21) is an arc-shaped surface; An optical component (3), the optical component (3) comprising a first light-emitting chip (31) located at the intersection of the central axis (21) and the mounting portion (11), and a second light-emitting chip (32) disposed between the first light-emitting chip (31) and the periphery of the lens (2), the first light-emitting chip (31) and the second light-emitting chip (32) being configured to be independently activatable; When the first light-emitting chip (31) is lit alone, a first light field distribution that is symmetrical about the central axis (21) is generated; when the second light-emitting chip (32) is lit alone, a directional, asymmetric second light field distribution is generated; when the first light-emitting chip (31) and the second light-emitting chip (32) are lit at the same time, the first light field distribution and the second light field distribution are superimposed on each other; The lens (2) comprises a central light-collecting portion (24) and a peripheral diffusion portion (25), the orthographic projection of the central light-collecting portion (24) on the substrate (1) overlaps with the orthographic projection of the first light-emitting chip (31) on the substrate (1), and the peripheral diffusion portion (25) is respectively connected to the central light-collecting portion (24) and the substrate (1); The inner surface of the central light focusing portion (24) and the inner surface of the peripheral diffusion portion (25) form an inner arc surface (22), and the outer surface of the central light focusing portion (24) and the outer surface of the peripheral diffusion portion (25) form an outer arc surface (23); The inner arc surface (22) is arranged relative to the outer arc surface (23) and close to the mounting portion (11); The inner arc surface (22) is a spherical surface, and the curvature of the outer arc surface (23) gradually increases from the central axis (21) toward the periphery of the outer arc surface (23); The thickness of the lens (2) gradually increases from the central axis (21) toward the periphery of the lens (2); A light-collecting microstructure (241) is provided on the outer surface of the central light-collecting portion (24), and a diffusion microstructure (251) is provided on the outer surface of the peripheral diffusion portion (25); The light-concentrating microstructure (241) is used to refract the light irradiated on the central light-concentrating portion (24) and converge it to the central axis (21), and the light-diffusing microstructure (251) is used to refract the light irradiated on the peripheral diffusion portion (25) and make it deviate from the central axis (21); The light-focusing microstructure (241) comprises a light-focusing annular groove (241a) surrounding the central axis (21); the groove wall surface of the light-focusing annular groove (241a) comprises a light-focusing inner annular surface (241b) and a light-focusing outer annular surface (241c) opposite to each other; the light-focusing inner annular surface (241b) is arranged close to the central axis (21) relative to the light-focusing outer annular surface (241c); wherein: The light-focusing outer annular surface (241c) is inclined in a direction close to the central axis (21) in the direction from the groove bottom to the groove opening of the light-focusing annular groove (241a), and the light-focusing inner annular surface (241b) is inclined in a direction perpendicular to the surface of the mounting portion (11) or in a direction away from the central axis (21) in the direction from the groove bottom to the groove opening of the light-focusing annular groove (241a); The light-focusing inner annular surface (241b) and the light-focusing outer annular surface (241c) are both planes; When the light-focusing inner annular surface (241b) is inclined in a direction away from the central axis (21) in the direction from the groove bottom to the groove mouth of the light-focusing annular groove (241a), the angle between the light-focusing inner annular surface (241b) and the central axis (21) is smaller than the angle between the light-focusing outer annular surface (241c) and the central axis (21); The diffusion microstructure (251) comprises a diffusion annular groove (251a) surrounding the central axis (21); the groove wall surface of the diffusion annular groove (251a) comprises a diffusion inner annular surface (251b) and a diffusion outer annular surface (251c) opposite to each other; the diffusion inner annular surface (251b) is arranged close to the central axis (21) relative to the diffusion outer annular surface (251c); wherein: The diffuser outer annular surface (251c) is inclined in a direction away from the central axis (21) in the direction from the groove bottom to the groove opening of the diffuser annular groove (251a), and the diffuser inner annular surface (251b) is inclined in a direction perpendicular to the surface of the mounting portion (11) or in a direction away from the central axis (21) in the direction from the groove bottom to the groove opening of the diffuser annular groove (251a).

2. The optical component according to claim 1, characterized in that The color temperature of the first light-emitting chip (31) and the color temperature of the second light-emitting chip (32) are different from each other.

3. The optical component according to claim 1, characterized in that The substrate (1) has a plurality of mounting portions (11) on the same side surface; The number of the lenses (2) is the same as the number of the mounting portions (11) so as to correspond one to one, and the lenses (2) are covered with the corresponding mounting portions (11); The number of the optical components (3) is the same as the number of the mounting portions (11) so as to correspond one to one. The first light-emitting chip (31) of each optical component (3) is mounted at the intersection of the central axis (21) of the corresponding lens (2) and the corresponding mounting portion (11), and the second light-emitting chip (32) of each optical component (3) is mounted between the central axis (21) of the corresponding lens (2) and the periphery of the corresponding lens (2).

4. An optical device, characterized in that: Comprising the optical component according to any one of claims 1 to 3.

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