Natural light homogenization device with a combined lens and serrated grating in a single-piece sinusoidal arrangement

Abstract

A natural light homogenization device with a combined single-chip sine arrangement of a lens and a sawtooth grating, which relates to a natural light homogenization device. The present invention aims to solve the problem that traditional daylighting curtains cannot ensure that natural light can be evenly scattered into the room at each lighting stage, and it is difficult to form an all-weather homogenized illumination effect. The present invention includes a plurality of thin light sheets. The outer side surface of each thin light sheet is composed of a continuous lens array, and the inner side surface of each thin light sheet is a continuous sawtooth grating. A plurality of thin light sheets are arranged in a matrix to form a daylighting matrix. Each row of thin light sheets in the daylighting matrix is numbered from left to right as the first thin light sheet, the second thin light sheet, the third thin light sheet, the fourth thin light sheet, the fifth thin light sheet, the sixth thin light sheet, the seventh thin light sheet, the eighth thin light sheet, the ninth thin light sheet, and the tenth thin light sheet. The present invention belongs to the field of optics.

Description

Technical Field

[0001] The present invention relates to a natural light homogenization device, belonging to the field of optical technology. Background Art

[0002] The research and development of natural light lighting technology in China started in the 1960s and 1970s of the 20th century. Since the promotion of the "Green Lighting" project in 1996, the concept of natural light lighting as a green energy source has gradually entered the public's vision. With the continuous in-depth research on solar lighting technology, people have a deeper understanding of the natural light collection and lighting system. During a day, the intensity and angle of the direct sunlight for illumination are different due to different morning and evening times. According to the different angles formed by the sun and the ground, the change of the direct sunlight throughout the day can be divided into three lighting stages:

[0003] 1. Morning and evening sunlight: When the sun rises from the eastern horizon and when the sun is about to set below the western horizon in the evening, the angle between the sunlight and the ground is 0° to 15°;

[0004] 2. Morning and afternoon sunlight: The angle between the morning and afternoon sunlight and the ground is between 15° and 60°. Usually, it refers to the light at the time from 8 am to 11 am in the morning and from 2 pm to 5 pm in the afternoon, and the illumination intensity is relatively stable;

[0005] 3. Noon sunlight: Also known as top light, it shines vertically downward on the ground from above. The illumination angle of the sunlight at this moment is often affected by seasons. At noon in summer, the sunlight basically shines vertically downward on the ground scenery at 90°, and the projection of the ground scenery is very small. At noon in other seasons, the sunlight shines vertically downward from above at an approximate vertical angle. At noon in winter, the illumination angle will be more deviated.

[0006] The incident angles of natural light in the above three lighting stages into the room are different. The traditional daylighting curtain cannot ensure that the natural light in each lighting stage can be evenly scattered into the room, and it is difficult to form an all-weather homogenization illumination effect. Summary of the Invention

[0007] In order to solve the problem that the traditional daylighting curtain cannot ensure that the natural light in each lighting stage can be evenly scattered into the room and it is difficult to form an all-weather homogenization illumination effect, the present invention further provides a natural light homogenization device with a combined single-piece sine arrangement of a lens and a sawtooth grating.

[0008] The technical solution adopted by the present invention to solve the above problems is as follows: The present invention includes a plurality of thin optical sheets. The outer side surface of each thin optical sheet consists of a continuous lens array, and the inner side surface of each thin optical sheet is a continuous sawtooth grating. A plurality of thin optical sheets are arranged in a matrix to form a daylighting matrix. Each row of thin optical sheets in the daylighting matrix is numbered from left to right as the first thin optical sheet, the second thin optical sheet, the third thin optical sheet, the fourth thin optical sheet, the fifth thin optical sheet, the sixth thin optical sheet, the seventh thin optical sheet, the eighth thin optical sheet, the ninth thin optical sheet, and the tenth thin optical sheet;

[0009] The angle between the sawtooth line of the sawtooth grating on the inner surface of the first thin optical sheet and the horizontal plane is 50°;

[0010] The angle between the sawtooth line of the sawtooth grating on the inner surface of the second thin optical sheet and the horizontal plane is 30°;

[0011] The angle between the sawtooth line of the sawtooth grating on the inner surface of the third thin optical sheet and the horizontal plane is 20°;

[0012] The angle between the sawtooth line of the sawtooth grating on the inner surface of the fourth thin optical sheet and the horizontal plane is 10°;

[0013] The angle between the sawtooth line of the sawtooth grating on the inner surface of the fifth thin optical sheet and the horizontal plane is 5°;

[0014] The angle between the sawtooth line of the sawtooth grating on the inner surface of the sixth thin optical sheet and the horizontal plane is 175°;

[0015] The angle between the sawtooth line of the sawtooth grating on the inner surface of the seventh thin optical sheet and the horizontal plane is 170°;

[0016] The angle between the sawtooth line of the sawtooth grating on the inner surface of the eighth thin optical sheet and the horizontal plane is 160°;

[0017] The angle between the sawtooth line of the sawtooth grating on the inner surface of the ninth thin optical sheet and the horizontal plane is 150°;

[0018] The angle between the sawtooth line of the sawtooth grating on the inner surface of the tenth thin optical sheet and the horizontal plane is 130°.

[0019] Furthermore, the continuous lens array refers to a continuous concave lens array.

[0020] Furthermore, the expression for the thickness z1 at different positions x1, y1 on the continuous concave lens array is r1 is the radius of the concave lens surface, and the surface radius is 1 - 5 times the minimum distance between the concave lens and the sawtooth grating.

[0021] Furthermore, the phase modulation added to natural light by the continuous concave lens array is expressed as x3 and y3 are the positions of the incident wavefront of the lens array, λ is the central wavelength of natural light, and f is the focal length of the lens.

[0022] Furthermore, the continuous lens array refers to a continuous convex free-form surface lens array.

[0023] Furthermore, the expression for the thickness d1 at different positions x1, y1 on the continuous convex free-form surface lens array is where n is the refractive index, r1 is the radius of curvature of the vertex of the convex free-form surface, θ1 is the surface type inclination angle of the convex free-form surface, and the light is refracted to propagate in the horizontal direction. The radius of curvature is 1 - 5 times the minimum distance between the free-form surface and the sawtooth grating.

[0024] Furthermore, the phase modulation added by the continuous convex free-form surface lens array to the incident light is expressed as θ3 is the incident angle of natural light on the free-form surface, λ is the central wavelength of the incident light, f1 is the equivalent focal length of the free-form surface, x3, y3 are the positions of the incident wavefront of the free-form surface array; the phase modulation added by the continuous sawtooth grating to the incident natural light is expressed as y4 is the position of the incident wavefront of the sawtooth surface array, and θ4 is the incident angle of the incident natural light on the sawtooth surface.

[0025] Furthermore, the value range of the sawtooth tilt angle θ in the continuous sawtooth grating is 20° to 70°.

[0026] Furthermore, the lenses in the continuous lens array correspond one-to-one with the sawteeth in the continuous sawtooth grating, and the central position of the sawteeth matches the optical axis of the lenses.

[0027] Furthermore, the thin light sheet is made of a transparent material with a transmittance greater than 85%.

[0028] The beneficial effects of the present invention are:

[0029] 1. The present invention can absorb natural light at each lighting stage outdoors and evenly scatter the natural light to every corner indoors, forming uniform lighting without dead angles;

[0030] 2. The present invention is not limited by the irradiation angle of natural light outdoors and can completely collect natural light at each time period and with different incident angles, evenly scatter it indoors, form uniform lighting of natural light, and realize the full utilization of green energy;

[0031] 3. The present invention can also replace traditional curtains, light-blocking curtains, windows, etc. to protect indoor privacy and prevent peeping from the outside;

[0032] 4. The present invention adopts the concept of lightweight design, with a light overall weight and easy for mass production;

[0033] 5. The present invention can efficiently collect the natural light incident into the window, evenly diverge the light in all directions indoors, homogenize the indoor lighting, effectively protect indoor privacy, is thin and light and easy to mass produce, and is environmentally friendly and pollution-free. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a front structural schematic diagram of the present invention;

[0035] Figure 2 is a side view of the thin light sheet when the outer side of the thin light sheet is a continuous concave lens array;

[0036] Figure 3 is a side view of the thin light sheet when the outer side of the thin light sheet is a continuous convex free-form lens array;

[0037] Figure 4 is a schematic diagram of the inner side of the first thin light sheet;

[0038] Figure 5 is a schematic diagram of the inner side of the second thin light sheet;

[0039] Figure 6 is a schematic diagram of the inner side of the third thin light sheet;

[0040] Figure 7 is a schematic diagram of the inner side of the fourth thin light sheet;

[0041] Figure 8 is a schematic diagram of the inner side of the fifth thin light sheet;

[0042] Figure 9 is a schematic diagram of the inner side of the sixth thin light sheet;

[0043] Figure 10 is a schematic diagram of the inner side of the seventh thin light sheet;

[0044] Figure 11 is a schematic diagram of the inner side of the eighth thin light sheet;

[0045] Figure 12 is a schematic diagram of the inner side of the ninth thin light sheet;

[0046] Figure 13 is a schematic diagram of the inner side of the tenth thin light sheet. DETAILED DESCRIPTION OF THE INVENTION

[0047] DETAILED DESCRIPTION OF THE INVENTION I: In combination with Figures 1 to 13To describe this embodiment, the natural light homogenization device with a combined lens and sawtooth grating in a single - piece sinusoidal arrangement includes a number of thin light sheets 1. The outer side surface of each thin light sheet 1 is composed of a continuous lens array 101, and the inner side surface of each thin light sheet 1 is a continuous sawtooth grating 102. A number of thin light sheets 1 are arranged in a matrix to form a daylighting matrix. Each row of thin light sheets in the daylighting matrix is numbered from left to right as the first thin light sheet, the second thin light sheet, the third thin light sheet, the fourth thin light sheet, the fifth thin light sheet, the sixth thin light sheet, the seventh thin light sheet, the eighth thin light sheet, the ninth thin light sheet, and the tenth thin light sheet;

[0048] The included angle β1 between the sawtooth line of the sawtooth grating on the inner surface of the first thin light sheet and the horizontal plane is 50°;

[0049] The included angle β2 between the sawtooth line of the sawtooth grating on the inner surface of the second thin light sheet and the horizontal plane is 30°;

[0050] The included angle β3 between the sawtooth line of the sawtooth grating on the inner surface of the third thin light sheet and the horizontal plane is 20°;

[0051] The included angle β4 between the sawtooth line of the sawtooth grating on the inner surface of the fourth thin light sheet and the horizontal plane is 10°;

[0052] The included angle β5 between the sawtooth line of the sawtooth grating on the inner surface of the fifth thin light sheet and the horizontal plane is 5°;

[0053] The included angle β6 between the sawtooth line of the sawtooth grating on the inner surface of the sixth thin light sheet and the horizontal plane is 175°;

[0054] The included angle β7 between the sawtooth line of the sawtooth grating on the inner surface of the seventh thin light sheet and the horizontal plane is 170°;

[0055] The included angle β8 between the sawtooth line of the sawtooth grating on the inner surface of the eighth thin light sheet and the horizontal plane is 160°;

[0056] The included angle β9 between the sawtooth line of the sawtooth grating on the inner surface of the ninth thin light sheet and the horizontal plane is 150°;

[0057] The included angle β10 between the sawtooth line of the sawtooth grating on the inner surface of the tenth thin light sheet and the horizontal plane is 130°.

[0058] Specific embodiment two: Combined with Figures 1 to 13 To describe this embodiment, the continuous lens array 101 in the natural light homogenization device with a combined lens and sawtooth grating in a single - piece sinusoidal arrangement refers to a continuous concave - lens array. Other compositions and connection relationships are the same as those in specific embodiment one.

[0059] Specific embodiment three: Combined with Figures 1 to 13For this embodiment, the expression of the thickness z1 at different positions x1, y1 on the continuous concave lens array of the natural light homogenization device with a combined lens and sawtooth grating in a single-piece sinusoidal arrangement is r1 is the radius of curvature of the concave lens surface, and the radius of curvature is 1 - 5 times the minimum distance between the concave lens and the sawtooth grating. Other components and connection relationships are the same as those in the second specific embodiment.

[0060] Specific embodiment four: The combination 1 to Figure 13 For this embodiment, the additional phase modulation of natural light by the continuous concave lens array of the natural light homogenization device with a combined lens and sawtooth grating in a single-piece sinusoidal arrangement is expressed as x3, y3 are the positions of the incident wavefront of the lens array, λ is the central wavelength of natural light, and f is the focal length of the lens. Other components and connection relationships are the same as those in the second specific embodiment.

[0061] Specific embodiment five: Combine Figures 1 to 13 For this embodiment, the continuous lens array 101 of the natural light homogenization device with a combined lens and sawtooth grating in a single-piece sinusoidal arrangement refers to a continuous convex free-form surface lens array. Other components and connection relationships are the same as those in the first specific embodiment.

[0062] Specific embodiment six: Combine Figures 1 to 13 For this embodiment, the expression of the thickness d1 at different positions x1, y1 on the continuous convex free-form surface lens array of the natural light homogenization device with a combined lens and sawtooth grating in a single-piece sinusoidal arrangement is where n is the refractive index, r1 is the radius of curvature of the vertex of the convex free-form surface, θ1 is the surface type inclination angle of the convex free-form surface, and the light is refracted to propagate in the horizontal direction. The radius of curvature is 1 - 5 times the minimum distance between the free-form surface and the sawtooth grating. Other components and connection relationships are the same as those in the fifth specific embodiment.

[0063] Specific embodiment seven: Combine Figures 1 to 13 For this embodiment, the additional phase modulation of the incident light by the continuous convex free-form surface lens array of the natural light homogenization device with a combined lens and sawtooth grating in a single-piece sinusoidal arrangement is expressed as θ3 is the incident angle of natural light on the free-form surface, λ is the central wavelength of the incident light, f1 is the equivalent focal length of the free-form surface, x3, y3 are the positions of the incident wavefront of the free-form surface array; the additional phase modulation of the incident natural light by the continuous sawtooth grating is expressed as y4 is the position of the incident wavefront of the sawtooth surface array, and θ4 is the incident angle of the incident natural light on the sawtooth surface. Other components and connection relationships are the same as those in the first or fifth specific embodiment.

[0064] Specific Embodiment Eight: Figures 1 to 13 In describing this embodiment, the value range of the sawtooth tilt angle θ in the continuous sawtooth grating 102 of the natural light homogenization device with a combined lens and sawtooth grating single-chip sine arrangement described in this embodiment is 20° to 70°. Other components and connection relationships are the same as those in the first specific embodiment.

[0065] Specific Embodiment Nine: Figures 1 to 13 In describing this embodiment, the lenses in the continuous lens array 101 of the natural light homogenization device with a combined lens and sawtooth grating single-chip sine arrangement described in this embodiment correspond one by one to the sawteeth in the continuous sawtooth grating 102, and the center position of the sawteeth matches the optical axis of the lenses. Other components and connection relationships are the same as those in the first specific embodiment.

[0066] Specific Embodiment Ten: Figures 1 to 13 In describing this embodiment, the thin light sheet 1 of the natural light homogenization device with a combined lens and sawtooth grating single-chip sine arrangement described in this embodiment is made of a transparent material with a transmittance greater than 85%. Other components and connection relationships are the same as those in the first specific embodiment.

[0067] Working Principle

[0068] The continuous lens array 101 is used to collect outdoor natural light and conduct it through an intermediate medium of the same material between two sides to the continuous sawtooth grating 102; the continuous sawtooth grating 102 is used to deflect the incident natural light to the indoor space after refraction through the inclined surface.

[0069] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the relevant art can make some changes or modifications to be equivalent embodiments within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, based on the technical essence of the present invention, any simple modification, equivalent replacement, and improvement made to the above embodiments within the spirit and principle of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A natural light homogenization device with a combined single - chip sinusoidal arrangement of a lens and a saw - tooth grating, characterized in that: The natural light homogenization device with a combined lens and sawtooth grating in a single-piece sine arrangement includes a plurality of thin light sheets (1). The outer side surface of each thin light sheet (1) is composed of a continuous lens array (101), and the inner side surface of each thin light sheet (1) is a continuous sawtooth grating (102). A plurality of thin light sheets (1) are arranged in a matrix to form a daylighting matrix. Each row of thin light sheets in the daylighting matrix is numbered as the first thin light sheet, the second thin light sheet, the third thin light sheet, the fourth thin light sheet, the fifth thin light sheet, the sixth thin light sheet, the seventh thin light sheet, the eighth thin light sheet, the ninth thin light sheet, and the tenth thin light sheet from left to right in sequence; The angle (β1) between the sawtooth line of the sawtooth grating on the inner surface of the first thin light sheet and the horizontal plane is 50°; The angle (β2) between the sawtooth line of the sawtooth grating on the inner surface of the second thin light sheet and the horizontal plane is 30°; The angle (β3) between the sawtooth line of the sawtooth grating on the inner surface of the third thin light sheet and the horizontal plane is 20°; The angle (β4) between the sawtooth line of the sawtooth grating on the inner surface of the fourth thin light sheet and the horizontal plane is 10°; The angle (β5) between the sawtooth line of the sawtooth grating on the inner surface of the fifth thin light sheet and the horizontal plane is 5°; The angle (β6) between the sawtooth line of the sawtooth grating on the inner surface of the sixth thin light sheet and the horizontal plane is 175°; The angle (β7) between the sawtooth line of the sawtooth grating on the inner surface of the seventh thin light sheet and the horizontal plane is 170°; The angle (β8) between the sawtooth line of the sawtooth grating on the inner surface of the eighth thin light sheet and the horizontal plane is 160°; The angle (β9) between the sawtooth line of the sawtooth grating on the inner surface of the ninth thin light sheet and the horizontal plane is 150°; The angle (β10) between the sawtooth line of the sawtooth grating on the inner surface of the tenth thin light sheet and the horizontal plane is 130°.

2. The natural light homogenization device with a combined lens and sawtooth grating in a single-piece sine arrangement according to claim 1, characterized in that: The continuous lens array (101) refers to a continuous concave lens array.

3. The natural light homogenizing device with a combined lens and sawtooth grating in a single-piece sine arrangement according to claim 2, characterized in that: The expression for the thickness z1 at different positions x1, y1 on the continuous concave lens array is r1 is the radius of curvature of the concave lens surface, and the radius of curvature is 1 - 5 times the minimum distance between the concave lens and the sawtooth grating.

4. The natural light homogenizing device with a combined lens and sawtooth grating in a single-piece sinusoidal arrangement according to claim 2, characterized in that: The phase modulation imposed by the continuous concave lens array on natural light is expressed as where x3 and y3 are the positions of the incident wavefront of the lens array, λ is the central wavelength of natural light, and f is the focal length of the lens.

5. The natural light homogenizing device with a combined lens and sawtooth grating in a single-piece sine arrangement according to claim 1, characterized in that: The continuous lens array (101) refers to a continuous convex free-form surface lens array.

6. The natural light homogenizing device with a combined lens and sawtooth grating in a single-piece sinusoidal arrangement according to claim 5, characterized in that: The expression for the thickness d1 at different positions x1, y1 on the continuous convex free-form surface lens array is where n is the refractive index, r1 is the radius of curvature of the vertex of the convex free-form surface, θ1 is the surface profile inclination angle of the convex free-form surface, and the light is refracted to propagate in the horizontal direction, and the radius of curvature is 1-5 times the minimum distance between the free-form surface and the sawtooth grating.

7. The natural light homogenizing device with a combined lens and sawtooth grating in a single-piece sine arrangement according to claim 1 or 5, characterized in that: The phase modulation imposed on the incident light by the continuous convex free-form lens array is expressed as where θ3 is the incident angle of natural light on the free-form surface, λ is the central wavelength of the incident light, f1 is the equivalent focal length of the free-form surface, and x3, y3 are the positions of the incident wavefront of the free-form lens array; the phase modulation imposed on the incident natural light by the continuous sawtooth grating is expressed as where y4 is the position of the incident wavefront of the sawtooth surface array, and θ4 is the incident angle of the incident natural light on the sawtooth surface.

8. The natural light homogenizing device with a combined lens and sawtooth grating in a single-piece sinusoidal arrangement according to claim 1, characterized in that: The value range of the sawtooth tilt angle (θ) in the continuous sawtooth grating (102) is 20° to 70°.

9. The natural light homogenization device with a combined lens and sawtooth grating in a single-chip sinusoidal arrangement according to claim 1, characterized in that: The lenses in the continuous lens array (101) correspond one by one to the sawteeth in the continuous sawtooth grating (102), and the center position of the sawteeth matches the optical axis of the lenses.

10. The natural light homogenization device with a combined lens and sawtooth grating in a single-piece sinusoidal arrangement according to claim 1, characterized in that: The thin light sheet (1) is made of a transparent material with a transmittance greater than 85%.

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