A high-illuminance light-emitting structure and lamp

Abstract

This application proposes a high-illuminance light-emitting structure, comprising: a light source, a primary optical component, and a secondary optical component; the secondary optical component, the primary optical component, and the light source are arranged sequentially from top to bottom; the primary optical component and the secondary optical component are used to sequentially focus the light emitted by the light source in two stages. By adopting a scheme of optically focusing the light twice, the problem of insufficient forward light intensity in most lighting devices is solved.

Description

Technical Field

[0001] This application relates to the field of lighting technology, specifically to a high-illuminance light-emitting structure and lamp. Background Technology

[0002] Light-emitting diodes (LEDs) have advantages such as high brightness, low operating voltage, low power consumption, easy matching with integrated circuits, simple driving, and long lifespan, making them widely used as light sources in the lighting field.

[0003] Currently, lighting fixtures on the market typically use atomized lampshades to increase the uniformity of light output, thereby widening the light emission angle of LED elements. However, this also leads to low forward light intensity. While extruding a single serrated design on the lampshade slightly improves the light intensity, the problem of insufficient forward light intensity still persists. Summary of the Invention

[0004] To address the aforementioned technical problems, a high-illuminance light-emitting structure is proposed in the first aspect of this application, comprising: a light source, a primary optical unit, and a secondary optical unit; the secondary optical unit, the primary optical unit, and the light source are arranged sequentially from top to bottom; the primary optical unit and the secondary optical unit are used to sequentially focus the light emitted by the light source in two stages.

[0005] In this scheme, during the initial light-gathering process, specific optical elements (such as convex lenses and parabolic mirrors) are used to initially converge the dispersed light rays. This causes the light rays, which were originally diverging in all directions, to begin converging towards a specific area, increasing the energy density of the light. By focusing the light from a relatively wide spatial range to a relatively small angular range, the scattering of light in lateral and other non-frontal directions is reduced, and more light is guided into the subsequent optical path, laying the foundation for improved frontal light intensity.

[0006] Based on the light from the first focusing, the second focusing element further converges the already preliminarily focused light. This further compresses the distribution range of the light, resulting in a significant increase in the energy density of the light in the frontal direction.

[0007] After two stages of focusing, the direction of light propagation is highly adjusted and optimized, and most of the light rays can travel along the front light-emitting direction.

[0008] Compared to single-focusing, it can more effectively overcome light loss during propagation and scattering in other directions, thereby significantly improving the intensity of front-facing light output and making it brighter and more concentrated.

[0009] Specifically, the secondary optical section includes: a first secondary optical section and a second secondary optical section disposed on both sides of the first secondary optical section; the first secondary optical section has a Fresnel sawtooth structure; the second secondary optical section has multiple sawtooths, the sawtooths on the second secondary optical section are symmetrically arranged on the left and right sides along the center line of the secondary optical section, and the sawtooths on the second secondary optical section have different tooth heights from top to bottom.

[0010] Specifically, the shape of the primary optical section is a straight step; the outer and inner curved surfaces of the primary optical section have multiple serrations.

[0011] Specifically, the secondary optical section uses transparent light-transmitting materials; the primary optical section uses highly atomized transparent materials. The primary optical section made of highly atomized transparent materials can scatter and diffusely reflect light, allowing light that might otherwise be absorbed or blocked to escape, thereby increasing the overall possibility and quantity of front-facing light emission and improving the intensity of front-facing light emission.

[0012] Specifically, the sawtooth on the outer arc surface of the primary optical section has a different spacing from the sawtooth on the inner arc surface.

[0013] Specifically, the serrations on the outer arc surface of the primary optical section have different spacings than the serrations on the inner arc surface.

[0014] The above technical solution avoids multiple interface reflections of LED light within the structural layer of the striped inner cover, thereby improving the light extraction efficiency of the double-layer sawtooth stripes.

[0015] Specifically, the shape of the primary optical component is an arc-shaped semicircle; the outer arc surface of the primary optical component has multiple serrations, and the inner arc surface is a smooth semicircle.

[0016] In a second aspect of this application, a high-illuminance luminaire is provided, comprising a light-emitting structure as described above and a base; the light-emitting structure is fixed on the base.

[0017] Specifically, a slot is formed within the base; the light source includes a light source board; the slot is used to fix the light source board; the light source board includes a circuit board and light-emitting diodes disposed on the circuit board.

[0018] Specifically, the light source is positioned at 1 / 4R, 1 / 5R, 1 / 7R, and 1 / 9R, where R is the radius of the circle formed by the base and the secondary optical unit.

[0019] The addition of a double-layered optical nesting structure consisting of a transparent Fresnel sawtooth outer cover and a semi-fogled striped inner cover has the following effects on improving the light intensity emitted from the front:

[0020] To increase light emission opportunities, the transparent Fresnel serrated outer cover allows more light to refract and pass through from different angles, providing more emission paths for the light. The semi-fog striped inner cover, through the scattering and diffuse reflection of light, allows light that might otherwise be absorbed or blocked to escape, thus increasing the overall possibility and quantity of front-facing light emission and enhancing the intensity of front-facing light emission.

[0021] By altering the direction of light propagation, the Fresnel sawtooth structure can refract and converge light in a specific direction. Through precisely designed sawtooth shapes and angles, light that would otherwise scatter in various directions can be guided to a more concentrated direction of emission, especially towards the front. The striped structure of the semi-fogled inner cover can also guide light propagation to a certain extent, causing light to propagate more along a direction favorable to frontal light emission as it passes through the inner cover, thereby increasing the intensity of frontal light emission.

[0022] To reduce light loss and absorption, the transparent outer cover ensures high light transmittance, minimizing light loss during propagation. While the semi-fog-like inner cover does scatter some light, compared to materials that completely absorb light, it reduces the proportion of light that is completely absorbed while still maintaining a certain scattering effect to improve light uniformity. This allows more light to ultimately exit from the front, helping to increase the intensity of light emitted from the front.

[0023] To improve light utilization efficiency, this double-layered optical nested structure manages and guides light more effectively through the synergistic effect of the outer and inner covers. This allows light emitted from the light source to be utilized more fully, reducing disordered propagation and loss of light within the structure, and guiding more light towards the front light emission direction, thereby improving the overall intensity and efficiency of front light emission. Attached Figure Description

[0024] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and, together with the description, serve to explain the principles of this application. Other embodiments and many anticipated advantages of these embodiments will be readily recognized as they become better understood through reference to the following detailed description. Elements in the drawings are not necessarily to scale. The same reference numerals refer to corresponding similar parts.

[0025] Figure 1 This is a structural schematic diagram of a high-intensity lamp according to an embodiment of this application;

[0026] Figure 2 This is a cross-sectional view of a high-intensity luminaire according to the first embodiment of this application;

[0027] Figure 3This is a cross-sectional view of a high-intensity luminaire according to a second embodiment of this application;

[0028] Figure 4 This is a cross-sectional view of a high-illuminance lamp according to a third embodiment of this application;

[0029] Figure 5 This is a cross-sectional view of a high-intensity luminaire according to the fourth embodiment of this application;

[0030] Figure 6 This is a cross-sectional view of a high-illuminance lamp according to the fifth embodiment of this application;

[0031] Figure 7 This is a cross-sectional view of a high-illuminance lamp according to the sixth embodiment of this application;

[0032] Figure 8 This is a light distribution curve diagram of a high-illuminance luminaire according to the fifth embodiment of this application;

[0033] Figure 9 This is a light distribution curve diagram of a high-illuminance luminaire according to the sixth embodiment of this application;

[0034] Figure 10 This is a light distribution curve diagram of a high-illuminance luminaire according to the first embodiment of this application;

[0035] Figure 11 This is a light distribution curve diagram of a high-illuminance luminaire according to the second embodiment of this application.

[0036] Figure label:

[0037] 1. Lamp fixture; 2. Lamp holder; 3. Lamp cover; 4. Base; 5. Primary optical component; 6. Light source board; 31. First and second secondary optical components; 32. Second and third secondary optical components; 41. Slot; 61. Circuit board; 62. Light-emitting diode. Detailed Implementation

[0038] In the following detailed description, reference is made to the accompanying drawings, which form part of the detailed description and illustrate illustrative specific embodiments in which the present application may be practiced. In this regard, directional terms such as “top,” “bottom,” “left,” “right,” “up,” “down,” etc., are used with reference to the orientation of the described figures. Because components of the embodiments can be positioned in several different orientations, directional terms are used for illustrative purposes and are by no means limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present application. Therefore, the following detailed description should not be taken in a limiting sense, and the scope of the present application is defined by the appended claims.

[0039] like Figures 1-6As shown, the first aspect of this application proposes a high-illuminance light-emitting structure, including: a light source, a primary optical unit 5, and a secondary optical unit; the secondary optical unit, the primary optical unit 5, and the light source are arranged sequentially from top to bottom; the primary optical unit 5 and the secondary optical unit are used to sequentially focus the light emitted by the light source in two stages.

[0040] In this scheme, during the initial focusing process, specific optical elements (such as convex lenses and parabolic mirrors) are used to initially converge the dispersed light rays. This causes the light rays, which were originally diverging in various directions, to begin converging towards a specific area, increasing the energy density of the light. It also reduces lateral light loss: by focusing the light from a relatively wide spatial range to a relatively small angular range, it reduces light scattering in lateral and other non-frontal directions, guiding more light rays into the subsequent optical path and laying the foundation for improved frontal light intensity.

[0041] The second focusing process further enhances energy density: Based on the light from the first focusing, the second focusing element re-converges the already preliminarily focused light. This further compresses the distribution range of the light, resulting in a significant increase in the energy density of the light in the frontal direction.

[0042] Improved front light emission efficiency: After two stages of focusing, the direction of light propagation is highly adjusted and optimized, and most of the light can travel along the front light emission direction.

[0043] Compared to single-focusing, it can more effectively overcome light loss during propagation and scattering in other directions, thereby significantly improving the intensity of front-facing light output and making it brighter and more concentrated.

[0044] Specifically, the secondary optical section uses transparent light-transmitting material; the primary optical section 5 uses highly atomized transparent material. The primary optical section 5, made of highly atomized transparent material, can make light that might otherwise be absorbed or blocked have a chance to be emitted through the scattering and diffuse reflection of light, thereby increasing the possibility and quantity of front light emission and improving the intensity of front light emission.

[0045] Specifically, the secondary optical section includes: a first secondary optical section 31 and a second secondary optical section 32 disposed on both sides of the first secondary optical section 31; the first secondary optical section 31 is formed with a Fresnel sawtooth structure; the second secondary optical section 32 is formed with multiple sawtooths, the sawtooths on the second secondary optical section 32 are symmetrically arranged on the left and right sides along the center line of the secondary optical section, and the sawtooths on the second secondary optical section 32 have different tooth heights from top to bottom.

[0046] Specifically, the first-stage optical section 5 has a straight-line step shape; the outer and inner arc surfaces of the first-stage optical section 5 are formed with multiple serrations.

[0047] Specifically, the sawtooth on the outer arc surface of the first-level optical section 5 has a different spacing from the sawtooth on the inner arc surface.

[0048] Specifically, the serrations on the outer arc surface of the primary optical section have different spacings than the serrations on the inner arc surface.

[0049] The above technical solution avoids multiple interface reflections of LED light within the structural layer of the striped inner cover, thereby improving the light extraction efficiency of the double-layer sawtooth stripes.

[0050] Specifically, the first-stage optical section 5 is shaped like an arc-shaped semicircle; the outer arc surface of the first-stage optical section 5 has multiple serrations, and the inner arc surface is a smooth semicircle.

[0051] In a second aspect of this application, a high-illuminance luminaire 1 is provided, comprising a light-emitting structure as described above, a base 4, and a lamp head 2; the light-emitting structure is fixed on the base 4; and the lamp head 2 is mounted on both sides of the base 4.

[0052] Specifically, a slot 41 is formed in the base 4; the light source includes a light source board 6; the slot 41 is used to fix the light source board 6; the light source board 6 is composed of a circuit board 61 and light-emitting diodes 62 disposed on the circuit board 61.

[0053] Specifically, the light source is positioned at 1 / 4R, 1 / 5R, 1 / 7R, and 1 / 9R, where R is the radius of the circle formed by the base 4 and the secondary optical unit.

[0054] The lamp holder 2 is equipped with a conductive PIN pin for power input, and the lamp holder 2 is also equipped with an AC to DC module to convert the input AC power supply into DC power output.

[0055] The base 4 has a slot 41; the light source board 6 is fixed in the slot 41; the light source board 6 includes a circuit board 61 and a plurality of light-emitting diodes 62.

[0056] After the PIN pin is powered on, the LED 62 lights up. The optical fiber undergoes the first optical focusing by the primary optical section 5, and then undergoes the second optical focusing by the first secondary optical section 31 and the second secondary optical section 32. This two-stage optical focusing method solves the problem of insufficient forward light intensity and meets the need to increase brightness and light efficiency in specific areas under special scenarios.

[0057] Furthermore, different lighting effects can be achieved by varying the position of the light source board 6 and the different structures of the primary optical unit 5, as illustrated by the following examples.

[0058] like Figure 2As shown, in the first embodiment, the lampshade 3 is a transparent and light-transmitting plastic, and the inner surface of the lampshade 3 has Fresnel serrations. Specifically, the first and second secondary optical parts 31 have Fresnel serration structures, and the second and second secondary optical parts 32 are provided with multiple serrations. The serrations are symmetrically arranged on the left and right sides along the center line of the lampshade 3, and the tooth height of the serrations changes uniformly from top to bottom. The light source plate 6 is installed in the slot 41, and the installation position of the light source plate 6 is 1 / 7R away from the bottom end of the base 4. The shape of the primary optical part 5 is a straight step. The outer arc surface and the inner arc surface of the primary optical part 5 are formed with multiple serrations, and the spacing between the serrations on the outer arc surface is greater than the spacing between the serrations on the inner arc surface.

[0059] In this embodiment, the light source emitted by the LED 62 is optically focused twice, so that when the light flux is 3000lm, the illumination angle is 49° and the illuminance at the position of 3M reaches 359LX, and the optical efficiency is 72lm / W.

[0060] Furthermore, such as Figure 10 The light distribution curves of the luminaire in this embodiment, displayed in both the horizontal and vertical planes, show that the strongest light intensity occurs at an emission angle between 0 and 10 degrees, with the light intensity decreasing as the emission angle increases. This embodiment significantly improves the front-facing light intensity and illumination uniformity of the LED luminaire. More specifically, the maximum light intensity in this embodiment is 1478.6 cd.

[0061] like Figure 3 As shown, in the second embodiment, the lampshade 3 is a transparent and light-transmitting plastic, and the inner surface of the lampshade 3 has Fresnel serrations. Specifically, the first and second secondary optical parts 31 have Fresnel serration structures, and the second and second secondary optical parts 32 are provided with multiple serrations. The serrations are symmetrically arranged along the center line of the lampshade 3, and the tooth height of the serrations changes uniformly from top to bottom. The light source plate 6 is installed in the slot 41, and the installation position of the light source plate 6 is 1 / 9R away from the bottom end of the base 4. The shape of the primary optical part 5 is a straight step. The outer arc surface and the inner arc surface of the primary optical part 5 are formed with multiple serrations, and the spacing between the serrations on the outer arc surface is greater than the spacing between the serrations on the inner arc surface. Furthermore, the serrations on the outer arc surface of the primary optical part and the serrations on the inner arc surface have different spacings.

[0062] In this embodiment, the light source emitted by the LED 62 is optically focused twice, so that when the light flux is 3000lm, the illumination angle is 53° and the illuminance at the 3M position reaches 279LX, and the optical efficiency is 75lm / W.

[0063] Furthermore, such as Figure 11The light distribution curves of the luminaire in this embodiment, displayed in both the horizontal and vertical planes, show that the strongest light intensity occurs at an emission angle between -10 and 10 degrees, with the light intensity decreasing as the emission angle increases. This embodiment significantly improves the front-facing light intensity and illumination uniformity of the LED luminaire. More specifically, the maximum light intensity in this embodiment is 1404.1 cd.

[0064] like Figure 4 As shown, in the third embodiment, the lampshade 3 is a transparent and light-transmitting plastic, and the inner surface of the lampshade 3 has Fresnel serrations. Specifically, the first and second secondary optical parts 31 have Fresnel serration structures, and the second and second secondary optical parts 32 are provided with multiple serrations. The serrations are symmetrically arranged on the left and right sides along the center line of the lampshade 3, and the tooth height of the serrations changes uniformly from top to bottom. The light source plate 6 is installed in the slot 41, and the installation position of the light source plate 6 is 1 / 7R away from the bottom end of the base 4. The shape of the primary optical part 5 is an arc-shaped semi-circular arc. The outer arc surface of the primary optical part 5 has multiple serrations, and the inner arc surface is a smooth semi-circular arc.

[0065] In this embodiment, the light source emitted by the LED 62 is optically focused twice, so that when the light flux is 3000lm, the illumination angle is 56° and the illuminance at the position of 3M reaches 278LX.

[0066] like Figure 5 As shown, in the fourth embodiment, the lampshade 3 is a transparent and light-transmitting plastic, and the inner surface of the lampshade 3 has Fresnel serrations. Specifically, the first and second secondary optical parts 31 have Fresnel serration structures, and the second and second secondary optical parts 32 are provided with multiple serrations. The serrations are symmetrically arranged on the left and right sides along the center line of the lampshade 3, and the tooth height of the serrations changes uniformly from top to bottom. The light source plate 6 is installed in the slot 41, and the installation position of the light source plate 6 is 1 / 9R away from the bottom end of the base 4. The shape of the primary optical part 5 is an arc-shaped semi-circular arc. The outer arc surface of the primary optical part 5 has multiple serrations, and the inner arc surface is a smooth semi-circular arc.

[0067] In this embodiment, the light source emitted by the light-emitting diode 62 is optically focused twice, so that when the light flux is 3000lm, the illumination angle is 59° and the illuminance at the position of 3M reaches 206LX.

[0068] like Figure 6As shown, in the fifth embodiment, the lampshade 3 is a transparent and light-transmitting plastic, and the inner surface of the lampshade 3 has Fresnel serrations. Specifically, the first and second secondary optical parts 31 have Fresnel serration structures, and the second and second secondary optical parts 32 are provided with multiple serrations. The serrations are symmetrically arranged on the left and right sides along the center line of the lampshade 3, and the tooth height of the serrations changes uniformly from top to bottom. The light source plate 6 is installed in the slot 41, and the installation position of the light source plate 6 is 1 / 4R away from the bottom end of the base 4. The shape of the primary optical part 5 is a straight step. The outer arc surface and the inner arc surface of the primary optical part 5 are formed with multiple serrations, and the spacing between the serrations on the outer arc surface is greater than the spacing between the serrations on the inner arc surface.

[0069] Furthermore, such as Figure 8 The light distribution curves of the luminaire in this embodiment, displayed in both the horizontal and vertical planes, show that the strongest light intensity occurs at an emission angle between -10 and 0 degrees, with the light intensity decreasing as the emission angle increases. This embodiment significantly improves the front-facing light intensity and illumination uniformity of the LED luminaire. More specifically, the maximum light intensity in this embodiment is 1621.3 cd.

[0070] In this embodiment, the light source emitted by the LED 62 undergoes two optical focusing processes, resulting in an optical efficiency of 69.8 lm / W.

[0071] like Figure 7 As shown, in the sixth embodiment, the lampshade 3 is a transparent and light-transmitting plastic, and the inner surface of the lampshade 3 has Fresnel serrations. Specifically, the first and second secondary optical parts 31 have Fresnel serration structures, and the second and second secondary optical parts 32 are provided with multiple serrations. The serrations are symmetrically arranged on the left and right sides along the center line of the lampshade 3, and the tooth height of the serrations changes uniformly from top to bottom. The light source plate 6 is installed in the slot 41, and the installation position of the light source plate 6 is 1 / 5R away from the bottom end of the base 4. The shape of the primary optical part 5 is a straight step. The outer arc surface and the inner arc surface of the primary optical part 5 are formed with multiple serrations, and the spacing between the serrations on the outer arc surface is greater than the spacing between the serrations on the inner arc surface.

[0072] In this embodiment, the light source emitted by the LED 62 undergoes two optical focusing processes, resulting in an optical efficiency of 71 lm / W.

[0073] Furthermore, such as Figure 9 The light distribution curves of the luminaire in this embodiment, shown in both the horizontal and vertical planes, reveal that the strongest light intensity occurs at an emission angle of 0 degrees, with the light intensity decreasing as the emission angle increases. This embodiment significantly improves the front-facing light intensity and illumination uniformity of the LED luminaire. More specifically, the maximum light intensity in this embodiment is 1533.7 cd.

[0074] The lampshade, base, and primary optical component in the above six embodiments can be made using a two-color extrusion process. In addition, the base 4 and the primary optical component 5 are made of a highly atomized material with a light transmittance greater than 97%. Through the optical and light source combination design of the lampshade 3, a highly transparent atomized striped inner cover with a light transmittance greater than 97% can be used, and then a fully transparent Fresnel serrated outer cover can be used to achieve the optical effect of concentrated illuminance, while improving the light efficiency.

[0075] It is obvious that those skilled in the art can make various modifications and alterations to the embodiments of this application without departing from the spirit and scope of this application. In this way, this application also aims to cover such modifications and alterations if they fall within the scope of the claims and their equivalents. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are described in mutually different dependent claims does not indicate that a combination of these measures cannot be used for profit. Any reference numerals in the claims should not be considered limiting in scope.

Claims

1. A high-illuminance light-emitting structure, comprising: Light source, primary optics section, and secondary optics section; The secondary optical section, primary optical section, and light source are arranged sequentially from top to bottom. The primary optical section and the secondary optical section are used to sequentially focus the light emitted by the light source in two stages. The primary optical section is a straight-line step shape, and its outer and inner arc surfaces are formed with multiple serrations. The serrations on the outer arc surface and the serrations on the inner arc surface of the primary optical section have different spacings. Alternatively, the primary optical section is an arc-shaped semicircle, with multiple serrations on its outer arc surface and a smooth semicircle on its inner arc surface. The secondary optical section includes a first secondary optical section and a second secondary optical section disposed on both sides of the first secondary optical section. The first secondary optical section has a Fresnel serration structure. The second secondary optical section has multiple serrations, which are symmetrically arranged along the center line of the second secondary optical section, and the serrations on the second secondary optical section have different tooth heights from top to bottom.

2. The high-illuminance light-emitting structure according to claim 1, characterized in that, The secondary optical section uses a transparent light-transmitting material; the primary optical section uses a mist-transmitting light-transmitting material.

3. The high-illuminance light-emitting structure according to claim 2, characterized in that, The spacing between the outer arc surface serrations is greater than the spacing between the inner arc surface serrations.

4. A high-illuminance luminaire, comprising a light-emitting structure as described in any one of claims 1 to 3 and a base; wherein the light-emitting structure is fixed on the base.

5. A high-illuminance luminaire according to claim 4, characterized in that, A slot is formed within the base; the light source includes a light source board; the slot is used to fix the light source board; the light source board includes a circuit board and light-emitting diodes disposed on the circuit board.

6. A high-illuminance luminaire according to claim 5, characterized in that, The light source is positioned at 1 / 4R, 1 / 5R, 1 / 7R, and 1 / 9R, where R is the radius of the circle formed by the base and the secondary optical unit.

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