Homogenizing illumination device based on a monolithic combination of lenses and sawtooth gratings
The homogenizing illumination device with a matrix of thin-light films and sawtooth gratings addresses the issue of uneven natural light diffusion, providing consistent illumination by evenly scattering light across the room, regardless of outdoor angles, and is lightweight and easy to produce.
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- GLORY LIGHT TECH (HARBIN) CO LTD
- Filing Date
- 2024-01-26
- Publication Date
- 2026-06-18
AI Technical Summary
Conventional light curtains fail to evenly diffuse natural light at different illumination levels throughout the day, leading to inconsistent room illumination and difficulty in achieving a homogeneous effect.
A homogenizing illumination device comprising a matrix of thin-light films with continuous arrangements of lenses and sawtooth gratings, where each thin-light film has specific angles and phase modulations to evenly scatter natural light across the room.
The device achieves homogeneous illumination without blind spots by efficiently collecting and diffusing natural light at any angle, ensuring consistent lighting throughout the day while being lightweight, easy to produce, and environmentally friendly.
Smart Images
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Abstract
Description
Technical field
[0001] The present invention relates to a homogenizing lighting device and belongs to the technical field of optics. State of the art
[0002] Research and development of natural lighting technology in China began in the 1960s and 70s. Since 1996, the "Green Lighting" project has been promoting the concept of natural lighting as a green energy source, gradually gaining public awareness. With further research into solar energy lighting technology, people have developed a deeper understanding of natural light generation systems. Sunlight varies throughout the day, from morning to evening, with different intensity and angles. People perceive the sun and the ground as influencing the angle of direct sunlight throughout the day. This can be divided into three lighting phases: 1. Morning and evening sunlight: When the sun rises on the eastern horizon and when the sun sets in the west in the evening, the angle between the sunlight and the ground is 0° to 15°; 2. Sunlight in the morning and afternoon: Sunlight in the morning and afternoon and the ground angle of 15° - 60° between, usually refers to the morning from eight to eleven o'clock in the morning, from two o'clock in the afternoon to five o'clock in the afternoon, this time of light, illuminance is more stable; 3. Midday: also known as the top light, from top to bottom vertically onto the ground, this moment the angle of illumination of the sun is often affected by the seasons. In summer, the sun at midday is basically 90° vertically downwards to illuminate the ground scene, the projection of the ground scene is very small, while in other seasons at midday, the sunlight is at an approximate vertical angle from top to bottom. In winter, at midday, the angle of its illumination will be more partial.
[0003] US 2023 / 0 221 482 A1 discloses a monolithic lighting device and a method for homogenizing natural light based on lenses and sawtooth grids, wherein the device can be used as light curtains, interior blinds, window panes, and the like. The device comprises a front surface and a rear surface in the form of an array, the first surface being a lens array and the second surface being a sawtooth array; natural outside light at a high angle is collected by the lens array surface and transferred through the intermediate medium of the same material between the two surfaces to the sawtooth array and then, after refraction by an inclined surface, scattered horizontally into the interior.
[0004] US 2014 / 0 376 220 A1 discloses a translucent structure. This structure comprises a translucent substrate with a first and a second opposing surface and an array of microprism elements on the first surface, each microprism element comprising a plurality of concentric microprisms. The translucent structure is configured to receive light from a light source facing the first surface and to distribute the light exiting the second surface in a 2D bat wing pattern.
[0005] US 2023 / 0 220 967 A1 discloses a lighting device and a method for homogenizing natural light based on a freeform surface and a sawtooth grid, wherein the device can be used as a light curtain, interior blind, window glass, and the like. The device comprises a front surface and a back surface in the form of an array, wherein the first surface is a freeform surface array, the second surface is a sawtooth surface array, and the freeform surface array is used to collect natural outside light and transmit it to the sawtooth surface array through the intermediate medium of the same material between the two surfaces; and the sawtooth surface array serves to deflect the incident natural light into the interior after refraction by an inclined surface.
[0006] US 2009 / 0 109 690 A1 discloses a light distribution plate used as a lighting cover for a lamp unit, comprising sawtooth light grids on a transparent plate. Each sawtooth light grid consists of a convex lens surface and a beveled flat lens surface. The sawtooth light grids are arranged on two sides of a center line of the transparent plate to project mirror images onto each other. The beveled lens surfaces are arranged to face two sides of the transparent plate, while the convex lens surfaces face the center line. The top surface is a light-receiving surface for the lamp unit. Several convex, strip-shaped light grids are formed on the underside of the transparent plate, which is also an illumination surface for the lamp unit.
[0007] The present invention serves to solve the problem that conventional light curtains are not able to diffuse the natural light of each illumination level evenly into the room, and that it is difficult to achieve an all-weather homogenized irradiation effect. Content of the invention
[0008] The angle of natural light entering the room differs in the three lighting levels mentioned above. Conventional light curtains cannot guarantee that the natural light from each lighting level is evenly diffused throughout the room, making it difficult to achieve a consistent illumination effect throughout the day.
[0009] The technical solutions adopted in the present invention for solving the above-mentioned problems are: the present invention comprises ten first thin-light films, ten second thin-light films, ten third thin-light films, ten fourth thin-light films, ten fifth thin-light films, ten sixth thin-light films, ten seventh thin-light films, ten eighth thin-light films, ten ninth thin-light films, and ten tenth thin-light films, wherein the ten first thin-light films, the ten second thin-light films, the ten third thin-light films, the ten fourth thin-light films, the ten fifth thin-light films, the ten sixth thin-light films, the ten seventh thin-light films, the ten eighth thin-light films, the ten ninth thin-light films, and the ten tenth thin-light films are arranged in a matrix to form a light-collecting matrix, wherein in the first row of the light-collecting matrix, in the order from left to right, the first thin-light film, the second Thin light film,the third thin-light film, the fourth thin-light film, the fifth thin-light film, the sixth thin-light film, the seventh thin-light film, the eighth thin-light film, the ninth thin-light film and the tenth thin-light film are arranged; wherein in the second row of the light-collecting matrix, in order from left to right, the tenth thin-light film, the first thin-light film, the second thin-light film, the third thin-light film, the fourth thin-light film, the fifth thin-light film, the sixth thin-light film, the seventh thin-light film, the eighth thin-light film and the ninth thin-light film are arranged; wherein in the third row of the light-collecting matrix, in order from left to right, the ninth thin-light film, the tenth thin-light film, the first thin-light film, the second thin-light film, the third thin-light film, the fourth thin-light film, the fifth thin-light film, the sixth thin-light film, the seventh thin-light film and the eighth thin-light film are arranged; wherein in the fourth row of the light-collecting matrix, in order from left to right, the eighth thin-light film, the ninth thin-light film, the tenth thin-light film, the first thin-light film, the second thin-light film, the third thin-light film, the fourth thin-light film, the fifth thin-light film, the sixth thin-light film and the seventh thin-light film are arranged; wherein in the fifth row of the light-collecting matrix, in order from left to right, the seventh thin-light film, the eighth thin-light film, the ninth thin-light film, the tenth thin-light film, the first thin-light film, the second thin-light film, the third thin-light film, the fourth thin-light film, the fifth thin-light film and the sixth thin-light film are arranged; wherein in the sixth row of the light-collecting matrix, the sixth thin-light film, the seventh thin-light film, the eighth thin-light film, the ninth thin-light film, the tenth thin-light film, the first thin-light film, the second thin-light film, the third thin-light film, the fourth thin-light film and the fifth thin-light film are arranged in the order from left to right. wherein in the seventh row of the light-collecting matrix, in order from left to right, the fifth thin-light film, the sixth thin-light film, the seventh thin-light film, the eighth thin-light film, the ninth thin-light film, the tenth thin-light film, the first thin-light film, the second thin-light film, the third thin-light film and the fourth thin-light film are arranged; wherein in the eighth row of the light-collecting matrix, in order from left to right, the fourth thin-light film, the fifth thin-light film, the sixth thin-light film, the seventh thin-light film, the eighth thin-light film, the ninth thin-light film, the tenth thin-light film, the first thin-light film, the second thin-light film and the third thin-light film are arranged; wherein in the ninth row of the light-collecting matrix, in order from left to right, the third thin-light film, the fourth thin-light film, the fifth thin-light film, the sixth thin-light film, the seventh thin-light film, the eighth thin-light film, the ninth thin-light film, the tenth thin-light film, the first thin-light film and the second thin-light film are arranged; wherein in the tenth row of the light-collecting matrix, in order from left to right, the second thin-light film, the third thin-light film, the fourth thin-light film, the fifth thin-light film, the sixth thin-light film, the seventh thin-light film, the eighth thin-light film, the ninth thin-light film, the tenth thin-light film and the first thin-light film are arranged; wherein a continuous arrangement of lenses is arranged on the outer surfaces of the first thin-light film, the second thin-light film, the third thin-light film, the fourth thin-light film, the fifth thin-light film, the sixth thin-light film, the seventh thin-light film, the eighth thin-light film, the ninth thin-light film and the tenth thin-light film, wherein continuous sawtooth gratings are arranged on the inner surfaces of the first thin-light film, the second thin-light film, the third thin-light film, the fourth thin-light film, the fifth thin-light film, the sixth thin-light film, the seventh thin-light film, the eighth thin-light film, the ninth thin-light film and the tenth thin-light film; wherein the angle between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the first thin-light film in cross-section and the horizontal plane is 50°, wherein the angle between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the second thin-light film in cross-section and the horizontal plane is 30°, wherein the angle between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the third thin-light film in cross-section and the horizontal plane is 20°, wherein the angle between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the fourth thin-light film in cross-section and the horizontal plane is 10°, wherein the angle between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the fifth thin-light film in cross-section and the horizontal plane is 5°, wherein the angle between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the sixth thin-light film in cross-section and the horizontal plane is 175°, wherein the angle between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the seventh thin-light film in cross-section and the horizontal plane is 170°, wherein the angle between the profile line of the inclined surface of the saw tooth of the saw tooth grid on the inner surface of the eighth thin-light film in cross-section and the horizontal plane is 160°, wherein the angle between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the ninth thin-light film in cross-section and the horizontal plane is 150°, wherein the angle between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the tenth thin-light film in cross-section and the horizontal plane is 130°.
[0010] Furthermore, the continuous arrangement of the lenses implies a continuous arrangement of concave lenses.
[0011] Furthermore, the formula for the thickness z1 at different positions x1, y1 on the surface of each concave lens of the continuous arrangement of concave lenses is z1=−x12+y12r1+r12−(x12+y12), r1 is the radius of the concave lens surface and the surface radius is 1 to 5 times the minimum distance between the concave lenses and the sawtooth grating.
[0012] Furthermore, the phase modulation φ1, which is added to the natural light by the continuous concave lens arrangement, is combined with φ1=−π(x32+y32)λf where x3, y3 is the position of the incident wavefront of the lens arrangement, λ is the wavelength of the center of the natural light and f is the focal length of the lens.
[0013] Furthermore, the continuous lens arrangement means a continuous arrangement of convex freeform lenses.
[0014] Furthermore, the formula for the thickness d1 at different positions x1, y1 on each convex freeform surface of the continuous arrangement of convex freeform lenses is: d1(x1,y1)=1n−1(x12+y12r1+r12+(x12+y12)+y1⋅sin θ1), where n is the refractive index, r1 is the radius of curvature of the vertex of the convex freeform surface and θ1 is the slope of the convex freeform surface, the light propagates in a horizontal direction by refraction and the radius of curvature is 1 to 5 times the minimum distance between the freeform surface and the sawtooth grating.
[0015] Furthermore, the continuous arrangement of convex freeform lenses adds a phase modulation φ1 to the incident light, referred to as φ1=−π(x32+y32)λf1−2πλy3⋅sin θ3, in addition, θ3 is the angle of incidence of the natural light on the freeform surface, λ is the wavelength of the center of the incident light, f1 is the equivalent focal length of the freeform surface, and x3, y3 are the positions of the arrangement of the freeform surface in front of the incident wave.
[0016] Furthermore, the continuous sawtooth grid adds a layer of glare to the incoming natural light. φ2=−2πλy4⋅sin θ4 The phase modulation φ2 is added, y4 is the position of this arrangement of sawtooth surfaces in front of the incident wave, and θ4 is the angle of incidence of the incident natural light on the sawtooth surfaces.
[0017] Furthermore, the first thin-light film, the second thin-light film, the third thin-light film, the fourth thin-light film, the fifth thin-light film, the sixth thin-light film, the seventh thin-light film, the eighth thin-light film, the ninth thin-light film and the tenth thin-light film are made of a transparent material with a transmittance of more than 85%.
[0018] Furthermore, each lens of the continuous lens arrangement corresponds one-to-one to each sawtooth of the continuous sawtooth grating, wherein the position of the center of the sawtooth coincides with the optical axis of the lens, and wherein the inclination angle (θ) of the sawtooth in the continuous sawtooth grating assumes a value in the range of 20° to 70°.
[0019] In comparison to the prior art, the advantageous effects of the present invention are as follows: 1. This invention is able to absorb the natural light of all outdoor lighting levels and scatter it evenly into all corners of the room, so that a homogeneous illumination without blind spots is created; 2. Since the invention is not limited by the angle of incidence of natural light outdoors, it can fully collect natural light at any time and under different angles of incidence and diffuse it evenly into the room, creating homogeneous illumination of natural light and allowing green energy to be fully utilized; 3. This invention can also replace conventional curtains, blinds, windows, etc. to protect privacy indoors and prevent outsiders from entering the interior; 4. This invention is based on the concept of lightweight construction, has a low overall weight and can be easily mass-produced; 5. This invention can efficiently collect the natural light entering the window, distribute the light evenly in all directions of the room, homogenize the interior lighting and effectively protect privacy in interior spaces; it is thin and light, easy to mass-produce, environmentally friendly and sustainable. Brief descriptions of the drawings Fig. 1: Schematic diagram of the front structure of the present invention; Fig. 2: Side view of a thin-light film whose outer surface is a continuous arrangement of concave lenses; Fig. 3: Side view of the thin-light film, the outside of which consists of a continuous arrangement of free-form lenses; Fig. 4: Schematic representation of the inner surface of the first thin-light film; Fig. 5: Schematic representation of the inner surface of the second thin-light film; Fig. 6: Schematic representation of the inner surface of the third thin-light film; Fig. 7: Schematic representation of the inner surface of the fourth thin-light film; Fig. 8: Schematic representation of the inner surface of the fifth thin-light film; Fig. 9: Schematic representation of the inner surface of the sixth thin-light film; Fig. 10: Schematic representation of the inner surface of the seventh thin-light film; Fig. 11: Schematic representation of the inner surface of the eighth thin-light film; Fig. 12: Schematic representation of the inner surface of the ninth thin-light film; Fig. 13: Schematic representation of the inner surface of the tenth thin-light film; Specific embodiment
[0020] Concrete example 1: as in the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12 to Fig. Figure 13 shows that the homogenizing illumination device, based on a monolithic combination of lens and sawtooth grating, comprises ten first thin-light films 1, ten second thin-light films 2, ten third thin-light films 3, ten fourth thin-light films 4, ten fifth thin-light films 5, ten sixth thin-light films 6, ten seventh thin-light films 7, ten eighth thin-light films 8, ten ninth thin-light films 9, and ten tenth thin-light films 10, wherein the ten first thin-light films 1, the ten second thin-light films 2, the ten third thin-light films 3, the ten fourth thin-light films 4, the ten fifth thin-light films 5, the ten sixth thin-light films 6, the ten seventh thin-light films 7, the ten eighth thin-light films 8, the ten ninth thin-light films 9, and the ten tenth thin-light films 10 Thin light films 10 are arranged in a matrix to form a light-collecting matrix, wherein in the first row of the light-collecting matrix, in order from left to right, the first thin-light film 1, the second thin-light film 2, the third thin-light film 3, the fourth thin-light film 4, the fifth thin-light film 5, the sixth thin-light film 6, the seventh thin-light film 7, the eighth thin-light film 8, the ninth thin-light film 9 and the tenth thin-light film 10 are arranged; wherein in the second row of the light-collecting matrix, in order from left to right, the tenth thin-light film (10), the first thin-light film 1, the second thin-light film 2, the third thin-light film 3, the fourth thin-light film 4, the fifth thin-light film 5, the sixth thin-light film 6, the seventh thin-light film 7, the eighth thin-light film 8 and the ninth thin-light film 9 are arranged; wherein in the third row of the light-collecting matrix, in order from left to right, the ninth thin-light film 9, the tenth thin-light film 10, the first thin-light film 1, the second thin-light film 2, the third thin-light film 3, the fourth thin-light film 4, the fifth thin-light film 5, the sixth thin-light film 6, the seventh thin-light film 7 and the eighth thin-light film 8 are arranged; wherein in the fourth row of the light-collecting matrix, in order from left to right, the eighth thin-light film 8, the ninth thin-light film 9, the tenth thin-light film 10, the first thin-light film 1, the second thin-light film 2, the third thin-light film 3, the fourth thin-light film 4, the fifth thin-light film 5, the sixth thin-light film 6 and the seventh thin-light film 7 are arranged; wherein in the fifth row of the light-collecting matrix, in order from left to right, the seventh thin-light film 7, the eighth thin-light film 8, the ninth thin-light film 9, the tenth thin-light film 10, the first thin-light film 1, the second thin-light film 2, the third thin-light film 3, the fourth thin-light film 4, the fifth thin-light film 5 and the sixth thin-light film 6 are arranged; wherein in the sixth row of the light-collecting matrix, in order from left to right, the sixth thin-light film 6, the seventh thin-light film 7, the eighth thin-light film 8, the ninth thin-light film 9, the tenth thin-light film 10, the first thin-light film 1, the second thin-light film 2, the third thin-light film 3, the fourth thin-light film 4 and the fifth thin-light film 5 are arranged. wherein in the seventh row of the light-collecting matrix, in order from left to right, the fifth thin-light film 5, the sixth thin-light film 6, the seventh thin-light film 7, the eighth thin-light film 8, the ninth thin-light film 9, the tenth thin-light film 10, the first thin-light film 1, the second thin-light film 2, the third thin-light film 3 and the fourth thin-light film 4 are arranged; wherein in the eighth row of the light-collecting matrix, in order from left to right, the fourth thin-light film 4, the fifth thin-light film 5, the sixth thin-light film 6, the seventh thin-light film 7, the eighth thin-light film 8, the ninth thin-light film 9, the tenth thin-light film 10, the first thin-light film 1, the second thin-light film 2 and the third thin-light film 3 are arranged; wherein in the ninth row of the light-collecting matrix, in order from left to right, the third thin-light film 3, the fourth thin-light film 4, the fifth thin-light film 5, the sixth thin-light film 6, the seventh thin-light film 7, the eighth thin-light film 8, the ninth thin-light film 9, the tenth thin-light film 10, the first thin-light film 1 and the second thin-light film 2 are arranged; wherein in the tenth row of the light-collecting matrix, in order from left to right, the second thin-light film 2, the third thin-light film 3, the fourth thin-light film 4, the fifth thin-light film 5, the sixth thin-light film 6, the seventh thin-light film 7, the eighth thin-light film 8, the ninth thin-light film 9, the tenth thin-light film 10 and the first thin-light film 1 are arranged; wherein a continuous arrangement of lenses is arranged on the outer surfaces of the first thin-light film 1, the second thin-light film 2, the third thin-light film 3, the fourth thin-light film 4, the fifth thin-light film 5, the sixth thin-light film 6, the seventh thin-light film 7, the eighth thin-light film 8, the ninth thin-light film 9 and the tenth thin-light film 10, wherein continuous sawtooth gratings are arranged on the inner surfaces of the first thin-light film 1, the second thin-light film 2, the third thin-light film 3, the fourth thin-light film 4, the fifth thin-light film 5, the sixth thin-light film 6, the seventh thin-light film 7, the eighth thin-light film 8, the ninth thin-light film 9 and the tenth thin-light film 10; wherein the angle β1 between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the first thin-light film 1 in cross-section and the horizontal plane is 50°, wherein the angle β2 between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the second thin-light film 2 in cross-section and the horizontal plane is 30°, wherein the angle β3 between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the third thin-light film 3 in cross-section and the horizontal plane is 20°, wherein the angle β4 between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the fourth thin-light film 4 in cross-section and the horizontal plane is 10°, wherein the angle β5 between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the fifth thin-light film 5 in cross-section and the horizontal plane is 5°, wherein the angle β6 between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the sixth thin-light film 6 in cross-section and the horizontal plane is 175°, wherein the angle β7 between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the seventh thin-light film 7 in cross-section and the horizontal plane is 170°, wherein the angle β8 between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the eighth thin-light film 8 in cross-section and the horizontal plane is 160°, wherein the angle β9 between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the ninth thin-light film 9 in cross-section and the horizontal plane is 150°, wherein the angle β10 between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the tenth thin light film 10 in cross-section and the horizontal plane is 130°.
[0021] Concrete example 2: as in the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12 to Fig. As shown in Figure 13, the continuous arrangement of lenses represents a continuous arrangement of concave lenses. Other compositions and connection relationships are the same as in the specific embodiment 1.
[0022] Concrete example 3: as in the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12 to Fig. As shown in Figure 13, the formula for the thickness z1 at different positions x1, y1 on the surface of each concave lens of the continuous arrangement of concave lenses is shown. z1=−x12+y12r1+r12−(x12+y12), r1 is the radius of the concave lens surface, and the surface radius is 1 to 5 times the minimum distance between the concave lenses and the sawtooth grid. Other compositions and connection relationships are the same as in specific embodiment 2.
[0023] Concrete example 4: as in the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12 to Fig. As shown in Figure 13, the phase modulation φ1 added to the natural light by the continuous concave lens arrangement is combined with φ1=−π(x32+y32)λf Let x3, y3 be the position of the incident wavefront of the lens arrangement, λ the wavelength of the center of the natural light, and f the focal length of the lens. Other compositions and relationships are the same as in specific embodiment 2.
[0024] Concrete example 5: as in the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12 to Fig. As shown in Figure 13, the continuous arrangement of lenses represents a continuous arrangement of convex freeform lenses. Other compositions and connection relationships are the same as in the specific embodiment 1.
[0025] Concrete example 6: as in the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12 to Fig. Figure 13 shows the formula for the thickness d1 at different positions x1, y1 on each convex freeform surface of the continuous arrangement of convex freeform lenses. d1(x1,y1)=1n−1(x12+y12r1+r12+(x12+y12)+y1⋅sin θ1), where n is the refractive index, r1 is the radius of curvature of the vertex of the convex freeform surface, and θ1 is the slope of the convex freeform surface, light propagates horizontally by refraction, and the radius of curvature is 1 to 5 times the minimum distance between the freeform surface and the sawtooth grating. Other compositions and connection relationships are the same as in specific embodiment 5.
[0026] Concrete example 7: as in the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12 to Fig. As shown in Figure 13, the continuous arrangement of convex freeform lenses adds a phase modulation φ to the incident light. 1, referred to as φ1=−π(x32+y32)λf1−2πλy3⋅sin θ3, In addition, θ3 is the angle of incidence of the natural light on the freeform surface, λ is the wavelength of the center of the incident light, f1 is the equivalent focal length of the freeform surface, and x3, y3 are the positions of the arrangement of the freeform surface in front of the incident wave. Other compositions and connection relationships are the same as in the specific embodiment 5.
[0027] Concrete example 8: as in the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12 to Fig. As shown in 13, the continuous sawtooth grating adds a layer of light to the incident natural light. φ2=−2πλy4. sin θ4 denotes the phase modulation φ2, y4 is the position of this arrangement of sawtooth surfaces in front of the incident wave, and θ4 is the angle of incidence of the incident natural light on the sawtooth surfaces. Other compositions and connection relationships are the same as in specific embodiment 1.
[0028] Concrete example 9: as in the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12 to Fig. As shown in Figure 13, the first thin-light film (1), the second thin-light film (2), the third thin-light film (3), the fourth thin-light film (4), the fifth thin-light film (5), the sixth thin-light film (6), the seventh thin-light film (7), the eighth thin-light film (8), the ninth thin-light film (9), and the tenth thin-light film (10) are made of a transparent material with a transmittance of more than 85%. Other compositions and bonding relationships are the same as in the specific embodiment shown in Figure 1.
[0029] Concrete example 9: as in the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12 to Fig.As shown in Figure 13, each lens of the continuous lens arrangement corresponds one-to-one to each sawtooth of the continuous sawtooth grid, the position of the center of the sawtooth coinciding with the optical axis of the lens, and the inclination angle (θ) of the sawtooth in the continuous sawtooth grid assuming a value in the range of 20° to 70°. Other compositions and connection relationships are the same as in specific embodiment 1. Operating principle
[0030] The present invention has two surfaces in the form of arrangements on the front and back, a lens arrangement on the front surface and a sawtooth grating arrangement on the rear surface; the natural light in the outside at a high angle is collected and modulated by the surface of the lens arrangement, guided through the intermediate medium of the same material between the two surfaces to the sawtooth grating arrangement and then, after refraction by the inclined surface, scattered horizontally into the interior.
Claims
[1] Homogenizing illumination device based on a monolithic combination of lenses and sawtooth gratings, characterized by, that the homogenizing illumination device based on a monolithic combination of lens and sawtooth grating comprises ten first thin-light films (1), ten second thin-light films (2), ten third thin-light films (3), ten fourth thin-light films (4), ten fifth thin-light films (5), ten sixth thin-light films (6), ten seventh thin-light films (7), ten eighth thin-light films (8), ten ninth thin-light films (9) and ten tenth thin-light films (10), wherein the ten first thin-light films (1), the ten second thin-light films (2), the ten third thin-light films (3), the ten fourth thin-light films (4), the ten fifth thin-light films (5), the ten sixth thin-light films (6), the ten seventh thin-light films (7), the ten eighth thin-light films (8), the ten ninth thin-light films (9) and the ten tenth Thin light films (10) are arranged in a matrix to form a light-collecting matrix, wherein in the first row of the light-collecting matrix, in order from left to right, the first thin-light film (1), the second thin-light film (2), the third thin-light film (3), the fourth thin-light film (4), the fifth thin-light film (5), the sixth thin-light film (6), the seventh thin-light film (7), the eighth thin-light film (8), the ninth thin-light film (9) and the tenth thin-light film (10) are arranged; wherein in the second row of the light-collecting matrix, in order from left to right, the tenth thin-light film (10), the first thin-light film (1), the second thin-light film (2), the third thin-light film (3), the fourth thin-light film (4), the fifth thin-light film (5), the sixth thin-light film (6), the seventh thin-light film (7), the eighth thin-light film (8) and the ninth thin-light film (9) are arranged; wherein in the third row of the light-collecting matrix, in order from left to right, the ninth thin-light film (9), the tenth thin-light film (10), the first thin-light film (1), the second thin-light film (2), the third thin-light film (3), the fourth thin-light film (4), the fifth thin-light film (5), the sixth thin-light film (6), the seventh thin-light film (7) and the eighth thin-light film (8) are arranged; wherein in the fourth row of the light-collecting matrix, in order from left to right, the eighth thin-light film (8), the ninth thin-light film (9), the tenth thin-light film (10), the first thin-light film (1), the second thin-light film (2), the third thin-light film (3), the fourth thin-light film (4), the fifth thin-light film (5), the sixth thin-light film (6) and the seventh thin-light film (7) are arranged; wherein in the fifth row of the light-collecting matrix, in order from left to right, the seventh thin-light film (7), the eighth thin-light film (8), the ninth thin-light film (9), the tenth thin-light film (10), the first thin-light film (1), the second thin-light film (2), the third thin-light film (3), the fourth thin-light film (4), the fifth thin-light film (5) and the sixth thin-light film (6) are arranged; wherein in the sixth row of the light-collecting matrix, in order from left to right, the sixth thin-light film (6), the seventh thin-light film (7), the eighth thin-light film (8), the ninth thin-light film (9), the tenth thin-light film (10), the first thin-light film (1), the second thin-light film (2), the third thin-light film (3), the fourth thin-light film (4) and the fifth thin-light film (5) are arranged; wherein in the seventh row of the light-collecting matrix, in order from left to right, the fifth thin-light film (5), the sixth thin-light film (6), the seventh thin-light film (7), the eighth thin-light film (8), the ninth thin-light film (9), the tenth thin-light film (10), the first thin-light film (1), the second thin-light film (2), the third thin-light film (3) and the fourth thin-light film (4) are arranged; wherein in the eighth row of the light-collecting matrix, in order from left to right, the fourth thin-light film (4), the fifth thin-light film (5), the sixth thin-light film (6), the seventh thin-light film (7), the eighth thin-light film (8), the ninth thin-light film (9), the tenth thin-light film (10), the first thin-light film (1), the second thin-light film (2) and the third thin-light film (3) are arranged; wherein in the ninth row of the light-collecting matrix, in order from left to right, the third thin-light film (3), the fourth thin-light film (4), the fifth thin-light film (5), the sixth thin-light film (6), the seventh thin-light film (7), the eighth thin-light film (8), the ninth thin-light film (9), the tenth thin-light film (10), the first thin-light film (1) and the second thin-light film (2) are arranged; wherein in the tenth row of the light-collecting matrix, in order from left to right, the second thin-light film (2), the third thin-light film (3), the fourth thin-light film (4), the fifth thin-light film (5), the sixth thin-light film (6), the seventh thin-light film (7), the eighth thin-light film (8), the ninth thin-light film (9), the tenth thin-light film (10) and the first thin-light film (1) are arranged; wherein a continuous arrangement of lenses is arranged on the outer surfaces of the first thin-light film (1), the second thin-light film (2), the third thin-light film (3), the fourth thin-light film (4), the fifth thin-light film (5), the sixth thin-light film (6), the seventh thin-light film (7), the eighth thin-light film (8), the ninth thin-light film (9) and the tenth thin-light film (10), wherein continuous sawtooth gratings are arranged on the inner surfaces of the first thin-light film (1), the second thin-light film (2), the third thin-light film (3), the fourth thin-light film (4), the fifth thin-light film (5), the sixth thin-light film (6), the seventh thin-light film (7), the eighth thin-light film (8), the ninth thin-light film (9) and the tenth thin-light film (10); wherein the angle (β1) between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the first thin-light film (1) in cross-section and the horizontal plane is 50°, wherein the angle (β2) between the profile line of the inclined surface of the saw tooth of the saw tooth grid on the inner surface of the second thin light film (2) in cross-section and the horizontal plane is 30°, wherein the angle (β3) between the profile line of the inclined surface of the saw tooth of the saw tooth grid on the inner surface of the third thin light film (3) in cross-section and the horizontal plane is 20°, wherein the angle (β4) between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the fourth thin-light film (4) in cross-section and the horizontal plane is 10°, wherein the angle (β5) between the profile line of the inclined surface of the saw tooth of the saw tooth grid on the inner surface of the fifth thin light film (5) in cross-section and the horizontal plane is 5°, wherein the angle (β6) between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the sixth thin-light film (6) in cross-section and the horizontal plane is 175°, wherein the angle (β7) between the profile line of the inclined surface of the saw tooth of the saw tooth grid on the inner surface of the seventh thin light film (7) in cross-section and the horizontal plane is 170°, wherein the angle (β8) between the profile line of the inclined surface of the saw tooth of the saw tooth grid on the inner surface of the eighth thin light film (8) in cross-section and the horizontal plane is 160°, wherein the angle (β9) between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the ninth thin-light film (9) in cross-section and the horizontal plane is 150°, wherein the angle (β10) between the profile line of the inclined surface of the sawtooth of the sawtooth grid on the inner surface of the tenth thin light film (10) in cross-section and the horizontal plane is 130°. [2] Homogenizing illumination device based on a monolithic combination of lenses and sawtooth gratings according to claim 1, characterized by , that the continuous arrangement of lenses represents a continuous arrangement of concave lenses. [3] Homogenizing illumination device based on a monolithic combination of lenses and sawtooth gratings according to claim 2, characterized by, that the formula for the thickness z1 at different positions x1 , y1 on the surface of each concave lens of the continuous arrangement of concave lenses z1=x12+y12r1+r12−(x12+y12) where r1 is the radius of the concave lens surface and the surface radius is 1 to 5 times the minimum distance between the concave lenses and the sawtooth grating. [4] Homogenizing illumination device based on a monolithic combination of lenses and sawtooth gratings according to claim 2, characterized by , that the phase modulation φ1 added to the natural light by the continuous concave lens arrangement, with φ1=−π(x32+y32)λf where x3, y3 is the position of the incident wavefront of the lens arrangement, λ is the wavelength of the center of the natural light and f is the focal length of the lens. [5] Homogenizing illumination device based on a monolithic combination of lenses and sawtooth gratings according to claim 1, characterized by , that the continuous arrangement of lenses represents a continuous arrangement of convex freeform lenses. [6] Homogenizing illumination device based on a monolithic combination of lenses and sawtooth gratings according to claim 5, characterized by , that the formula for the thickness d1 at different positions x1 , y1 on each convex freeform surface of the continuous arrangement of convex freeform lenses d1(x1,y1)=1n−1(x12+y12r1+r12+(x12+y12)+y1⋅sin θ1) is given by, where n is the refractive index, r1 is the radius of curvature of the vertex of the convex freeform surface and θ1 is the slope of the convex freeform surface, the light propagates in a horizontal direction by refraction and the radius of curvature is 1 to 5 times the minimum distance between the freeform surface and the sawtooth grating. [7] Homogenizing illumination device based on a monolithic combination of lenses and sawtooth gratings according to claim 5, characterized by , that the continuous arrangement of convex freeform lenses imparts a phase modulation φ1 to the incident light, denoted as φ1=−π(x32+y32)λf1−2πλy3⋅sin θ3, adds, θ3 is the angle of incidence of the natural light on the freeform surface, λ is the wavelength of the center of the incident light, f1 is the equivalent focal length of the freeform surface, and x3, y3 are the positions of the arrangement of the freeform surface in front of the incident wave. [8] Homogenizing illumination device based on a monolithic combination of lenses and sawtooth gratings according to claim 1, characterized by that the continuous sawtooth grid gives the incoming natural light a φ2=−2πλy4⋅sin θ4 The phase modulation φ2 is added, y4 is the position of this arrangement of sawtooth surfaces in front of the incident wave, and θ4 is the angle of incidence of the incident natural light on the sawtooth surfaces. [9] Homogenizing illumination device based on a monolithic combination of lenses and sawtooth gratings according to claim 1, characterized by, that the first thin-light film (1), the second thin-light film (2), the third thin-light film (3), the fourth thin-light film (4), the fifth thin-light film (5), the sixth thin-light film (6), the seventh thin-light film (7), the eighth thin-light film (8), the ninth thin-light film (9) and the tenth thin-light film (10) are made of a transparent material with a transmittance of more than 85%. [10] Homogenizing illumination device based on a monolithic combination of lenses and sawtooth gratings according to claim 1, characterized by , that each lens of the continuous lens arrangement corresponds one-to-one to each sawtooth of the continuous sawtooth grating, and wherein the position of the center of the sawtooth coincides with the optical axis of the lens, wherein the inclination angle (θ) of the sawtooth in the continuous sawtooth grating assumes a value in the range of 20° to 70°.