CN113933927A - Light-adjusting interlayer light-transmitting plate capable of being spliced for building - Google Patents
Light-adjusting interlayer light-transmitting plate capable of being spliced for building Download PDFInfo
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- CN113933927A CN113933927A CN202111221747.6A CN202111221747A CN113933927A CN 113933927 A CN113933927 A CN 113933927A CN 202111221747 A CN202111221747 A CN 202111221747A CN 113933927 A CN113933927 A CN 113933927A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
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Abstract
The invention relates to a light-dimming interlayer light-transmitting plate for a building, which can be spliced, wherein a light-transmitting plate body of the plate mainly comprises two layers of light-transmitting plates and a hollow interlayer between the two layers of light-transmitting plates, micron-sized light-dimming microstructure mesh points are attached between the two layers of light-transmitting plates, and the plate body is any polygon with straight edges; one or more groups of strip-shaped light sources are arranged on any one side or multiple sides of the light-transmitting plate body to form single-side incident light or multiple-side incident light, and light rays entering the light-transmitting plate body are scattered and emitted through the light-adjusting microstructure mesh points; according to the shape of the building door and window, the dimming interlayer light-transmitting plate is matched with the building door and window through a single dimming interlayer light-transmitting plate, so that the whole door and window can emit light and adjust brightness, or at least two dimming interlayer light-transmitting plates are spliced and combined, so that the appearance of the spliced and expanded dimming interlayer light-transmitting plate is matched with the building door and window. The dimming interlayer light-transmitting plate is beneficial to realizing uniform light emitting and dimming of the interlayer light-transmitting plate, and is low in energy consumption, easy to maintain and good in applicability.
Description
Technical Field
The invention belongs to the field of building materials, and particularly relates to a light-dimming interlayer light-transmitting plate for a building, which can be spliced.
Background
Along with the continuous improvement of people's demand for building intellectuality, architectural glass with multi-functional integrated characteristic receives market favor gradually. In recent years, architectural luminescent glass capable of realizing indoor lighting or adjusting indoor light intensity is a research hotspot because the architectural luminescent glass can remarkably improve the comfort degree of people in home and office environments. The function of realizing illumination or adjusting indoor light intensity of the building luminescent glass mainly depends on integration of a photoelectric technology, and the common luminescent glass applying the photoelectric technology in the market at present mainly comprises dot matrix photoelectric glass, flat panel lighting glass, liquid crystal dimming glass and the like. The first two main types of light sources are attached to the surface of the glass substrate, can emit light and adjust light intensity, can realize indoor illumination and adjust indoor light intensity when applied to building doors and windows, but the densely distributed light sources bring greater energy consumption, and electrode wiring causes the overall process to be more complex and the cost to be too high, thereby restricting the wide application of the light sources in the building field. The liquid crystal dimming glass product can not emit light, and the liquid crystal film is solidified between two pieces of glass, and the glass is changed into a transparent or non-transparent state through electric energy control, so that the indoor light intensity can be adjusted under the condition that an external light source exists. However, since such glass has a complicated structure and high process requirements, and the liquid crystal film and the glass are integrated into a single structure, once damaged, the liquid crystal film is not easily repaired, so that the popularization of the liquid crystal film in building applications is also limited. It is worth noting that, with the diversification development of the building appearance and function, more and more polygonal doors and windows with irregular shapes need to be matched with building glass capable of emitting light and adjusting light intensity. In addition, modern buildings have higher and higher requirements on heat preservation, heat insulation, sound insulation and noise prevention, the hollow sandwich light-transmitting plate becomes a mainstream building material in civil and commercial buildings, and the related technology is rarely reported at present how to realize the functions of light emission and light intensity adjustment in the hollow sandwich light-transmitting plate.
Disclosure of Invention
The invention aims to provide a light-dimming interlayer light-transmitting plate for buildings, which can be spliced, is beneficial to realizing uniform light emission and light dimming of the interlayer light-transmitting plate, and has the advantages of low energy consumption, easiness in maintenance and good applicability.
In order to achieve the purpose, the invention adopts the technical scheme that: a light-dimming interlayer light-transmitting plate for a building, which can be spliced, is characterized in that a light-transmitting plate body of the light-dimming interlayer light-transmitting plate mainly comprises an upper single-layer light-transmitting plate, a lower single-layer light-transmitting plate and a hollow interlayer between the two layers of light-transmitting plates, the hollow interlayer is an air layer or a vacuum layer, micron-sized light-dimming microstructure dots are attached between the upper single-layer light-transmitting plate and the lower single-layer light-transmitting plate, the light-transmitting plate body is an arbitrary polygon with straight edges, and no angle constraint exists between every two adjacent edges; one or more groups of strip-shaped light sources are arranged on any one side or multiple sides of the light-transmitting plate body to form single-side incident light or multiple-side incident light, and the transmitted light entering the light-transmitting plate body is scattered through the light-adjusting microstructure dots in the hollow interlayer to enable the light-transmitting plate to emit light; according to the shape of building door and window, the intermediate layer printing opacity panel of adjusting luminance matches the building door and window with monolithic intermediate layer printing opacity panel of adjusting luminance, realizes the luminous and the light and shade regulation of whole door and window, perhaps uses two piece at least intermediate layer printing opacity panels of adjusting luminance as the piece unit, along printing opacity panel body side concatenation, combination, makes the intermediate layer printing opacity panel appearance of adjusting luminance after the concatenation extension match the building door and window, and every piece unit independently gives out light and shade regulation, or gives out light and shade regulation to the intermediate layer printing opacity panel of adjusting luminance after the combination wholly.
Furthermore, each group of strip-shaped light sources mainly comprises a light bar substrate and a plurality of LED point light sources arranged along the length direction of the light bar substrate; the diameter of the dimming microstructure mesh point is not more than 100 micrometers, when a light source does not emit light, the dimming interlayer light-transmitting plate is equal to common glass and is in a transparent state, and the dimming microstructure mesh point is invisible to naked eyes; when the light source emits light, light enters the dimming interlayer light-transmitting plate from the side where the strip-shaped light source is arranged and is totally reflected and propagated, and when meeting the dimming microstructure mesh points, the light is scattered out, so that the dimming interlayer light-transmitting plate emits light and performs auxiliary illumination on the indoor space; when the brightness of the light source is adjusted, the luminous intensity of the light-adjusting interlayer light-transmitting plate is changed, so that the indoor illumination intensity is adjusted.
Furthermore, the size of a light emitting area of the strip-shaped light source is smaller than the thickness of the light-transmitting plate body, so that the propagation distance of light rays in the thickness direction can be ignored; the central wavelength range of the strip-shaped light source is 380nm to 780 nm; the strip-shaped light source is attached to one or more side edges of the light-transmitting plate body, and the distance between the strip-shaped light source and the side edges of the light-transmitting plate body is not more than 0.5 mm; when the building door and window is formed by splicing and expanding at least two dimming interlayer light-transmitting plates, dimming microstructure mesh points are uniformly distributed in each dimming interlayer light-transmitting plate and are distributed according to the position of a light source.
Further, the dimming interlayer light-transmitting plate is made of an organic material or an inorganic material, and the organic material includes: one or more of polyethylene, polypropylene, polyethylene naphthalate, polycarbonate, polymethyl acrylate, polymethyl methacrylate, cellulose acetate butyrate, siloxane, polyvinyl chloride, polyvinyl alcohol, polyethylene terephthalate, modified polyethylene terephthalate, polydimethylsiloxane and cycloolefin copolymer; the inorganic material includes: one or more of glass, quartz and transmission ceramic materials; the refractive index of the light-dimming interlayer light-transmitting plate is greater than that of air, and the transmittance in a visible light wave band is higher than 90%; when the light-adjusting interlayer light-transmitting plate is spliced and expanded for use, the side edges of the strip-shaped light sources are removed, and the other side edges are attached to the reflecting strips or blackened so as to prevent light crosstalk.
Further, the manufacturing process of the light-transmitting plate body comprises the following steps: firstly, preparing two single-layer light-transmitting plates with the same shape, then forming a designed light-dimming microstructure dot pattern on one surface of the single-layer light-transmitting plate through the process technologies of screen printing, ink-jet printing, laser direct writing or photoetching, aligning and attaching the edges of the two light-transmitting plates, and enabling the light-dimming microstructure dots to be positioned in a hollow interlayer between the two single-layer light-transmitting plates; the thickness of the hollow interlayer is determined by the height of the protrusions of the forming mesh points, and the interlayer space is filled with air or the interlayer frame is sealed by vacuumizing so as to improve the silencing effect of the building door and window.
Furthermore, the light-adjusting microstructure mesh points are laid on the whole surface between the two single-layer light-transmitting plates, so that the building door and window can uniformly emit light when the strip-shaped light source is started; the calculation method of the distribution of the mesh points of the dimming microstructure comprises the following steps:
calculating the illumination distribution on the surface of the interlayer after the strip light source enters the light-adjusting interlayer light-transmitting plate;
mapping the dot distribution according to the calculated illumination distribution;
when the building door and window is formed by splicing a plurality of dimming interlayer light-transmitting plates, each dimming interlayer light-transmitting plate is an independent splicing unit, and the design and calculation of the mesh point distribution are carried out on the dimming interlayer light-transmitting plates one by one.
Further, when the distribution of the dots of the dimming microstructure is calculated, each group of strip-shaped light sources is regarded as formed by connecting a plurality of point light sources in the length direction; the thickness of the light-adjusting interlayer light-transmitting plate and the light-emitting size of the light source in the thickness direction of the light-adjusting interlayer light-transmitting plate are far smaller than the side length of the interlayer light-transmitting plate, so that the propagation distance of light in the thickness direction can be ignored; the luminous intensity distribution of each point light source meets the Lambert cosine formula: i isθ＝I0Cos θ, wherein I0Is the light intensity of the light source in the direction of the normal of the outgoing light, IθIs the light intensity of the light source in the direction with an angle theta with the normal direction of the emergent light.
Further, the calculation of the distribution of the dots of the dimming microstructure specifically comprises the following steps:
establishing a reference plane rectangular coordinate system by using the bottom surface of the light-adjusting interlayer light-transmitting plate, transmitting light rays emitted by the point light source in the interlayer light-transmitting plate, solving the illumination intensity of the point light source at any point on the bottom surface of the light-transmitting plate by using a light intensity distribution cosine law and an illumination square inverse ratio law, and accumulating or integrating the illumination intensities of all point light sources on the side strip-shaped light source at the point to obtain the illumination intensity of any point on the interlayer of the interlayer light-transmitting plate;
and for the light-dimming interlayer light-transmitting plate with the strip-shaped light sources on the multiple sides, calculating the illuminance of each light source at a certain point of the interlayer surface of the light-dimming interlayer light-transmitting plate, and then summing the illuminances of the light sources at the point in an accumulated manner to obtain the illuminance of any point on the interlayer surface of the light-dimming interlayer light-transmitting plate with the strip-shaped light sources on the multiple sides.
Further, according to the calculated illuminance of any point on the interlayer surface of the dimming interlayer light-transmitting plate, the lowest illuminance of the interlayer surface of the dimming interlayer light-transmitting plate is measured, and the mesh point density distribution of the interlayer surface is set by referring to the difference value between the illuminance of any point and the lowest illuminance, so that the mesh point distribution which enables the dimming interlayer light-transmitting plate to uniformly emit light is obtained.
Compared with the prior art, the invention has the following beneficial effects: the invention provides a light-dimming sandwich light-transmitting plate for a building, which can be spliced, from the angles of reducing energy consumption, improving structure and reducing maintenance and repair difficulty, wherein a strip-shaped light source is placed on the side edge of a hollow sandwich light-transmitting plate for the building and is independently maintained as a separate element from the light-transmitting plate; the light-transmitting plate interlayer is prefabricated with micron-sized light-adjusting microstructure dots according to the design in advance and is formed. Through the splicing and lattice point distribution design of the hollow interlayer light-transmitting plate, the independent dimming and uniform light emitting of the building door and window can be realized, and the design requirement of the building engineering is met. Therefore, the invention has higher practical value and wide application prospect.
Drawings
Fig. 1 is a side view of a hexagonal building sandwich light-transmitting plate according to embodiment 1 of the present invention.
In the figure, 1 is a light-adjusting interlayer light-transmitting plate, 11 is an upper single-layer light-transmitting plate in the light-adjusting interlayer light-transmitting plate, 12 is a lower single-layer light-transmitting plate in the light-adjusting interlayer light-transmitting plate, 13 is a hollow interlayer of the light-adjusting interlayer light-transmitting plate, 2 is a strip light source, and 3 is a microstructure light-adjusting lattice point which is positioned in the hollow interlayer and attached to the lower surface of the upper light-transmitting plate.
Fig. 2 is a special-shaped building door and window formed by splicing three hexagonal building interlayer light-transmitting plates in embodiment 1 of the invention.
In the figure, 4 is the profile of the special-shaped building door and window.
Fig. 3 is a schematic view of an illuminance analysis process of any polygonal building sandwich light-transmitting plate in the embodiment of the present invention.
Fig. 4 is a schematic flow chart illustrating the generation of a sandwich layer dot density distribution graph according to an illumination analysis in the embodiment of the present invention.
Fig. 5 is a schematic diagram of the dot distribution design of the double-side incident light trapezoid building sandwich light-transmitting plate in the embodiment of the invention.
Fig. 6 is a schematic diagram of the dot distribution design of the irregular hexagonal building sandwich light-transmitting plate with light incident from both sides in the embodiment of the present invention.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The embodiment provides a light-dimming sandwich light-transmitting plate for buildings, which is characterized in that a light-transmitting plate body of the light-dimming sandwich light-transmitting plate mainly comprises an upper single-layer light-transmitting plate, a lower single-layer light-transmitting plate and a hollow sandwich between the two layers of light-transmitting plates, the hollow sandwich is an air layer or a vacuum layer, micron-sized light-dimming microstructure mesh points are attached between the upper single-layer light-transmitting plate and the lower single-layer light-transmitting plate, the light-transmitting plate body is an arbitrary polygon with straight edges, and no angle constraint exists between every two adjacent edges. The micron-sized dimming microstructure mesh points are attached to the surface of one layer of light-transmitting plate or the surfaces of two layers of light-transmitting plates. The dots are distributed in a dot-by-dot manner (with intervals between each adjacent dot) to cover the whole surface. One or more groups of strip-shaped light sources are arranged on any one side or multiple sides of the light-transmitting plate body to form single-side incident light or multiple-side incident light, and the transmitted light entering the light-transmitting plate body is scattered through the light-adjusting microstructure dots in the hollow interlayer to enable the light-transmitting plate to emit light. According to the shape of building door and window, the intermediate layer printing opacity panel of adjusting luminance matches the building door and window with monolithic intermediate layer printing opacity panel of adjusting luminance, realizes the luminous and the light and shade regulation of whole door and window, perhaps uses two piece at least intermediate layer printing opacity panels of adjusting luminance as the piece unit, along printing opacity panel body side concatenation, combination, makes the intermediate layer printing opacity panel appearance of adjusting luminance after the concatenation extension match the building door and window, and every piece unit independently gives out light and shade regulation, or gives out light and shade regulation to the intermediate layer printing opacity panel of adjusting luminance after the combination wholly.
In this embodiment, each group of strip light sources mainly comprises a light bar substrate and a plurality of LED point light sources arranged along the length direction of the light bar substrate; the diameter of the dimming microstructure mesh point is not more than 100 micrometers, when a light source does not emit light, the dimming interlayer light-transmitting plate is equal to common glass and is in a transparent state, and the dimming microstructure mesh point is invisible to naked eyes; when the light source emits light, light enters the dimming interlayer light-transmitting plate from the side where the strip-shaped light source is arranged and is totally reflected and propagated, and when meeting the dimming microstructure mesh points, the light is scattered out, so that the dimming interlayer light-transmitting plate emits light and performs auxiliary illumination on the indoor space; when the brightness of the light source is adjusted, the luminous intensity of the light-adjusting interlayer light-transmitting plate is changed, so that the indoor illumination intensity is adjusted.
In this embodiment, the size of the light emitting area of the strip light source is smaller than the thickness of the light transmitting plate body, so that the propagation distance of light in the thickness direction can be ignored; the central wavelength range of the strip-shaped light source is 380nm to 780 nm; the strip-shaped light source is attached to one or more side edges of the light-transmitting plate body, and the distance between the strip-shaped light source and the side edges of the light-transmitting plate body is not more than 0.5 mm; when the building door and window is formed by splicing and expanding at least two dimming interlayer light-transmitting plates, dimming microstructure mesh points are uniformly distributed in each dimming interlayer light-transmitting plate and are distributed according to the position of a light source.
In this embodiment, the dimming interlayer light-transmitting plate may be made of an organic material or an inorganic material, and the organic material includes: one or a mixture of Polyethylene (PE), polypropylene (PP), polyethylene naphthalate (PEN), Polycarbonate (PC), polymethyl acrylate (PMA), polymethyl methacrylate (PMMA), Cellulose Acetate Butyrate (CAB), siloxane, polyvinyl chloride (PVC), polyvinyl alcohol (PVA), polyethylene terephthalate (PET), modified polyethylene terephthalate (PETG), Polydimethylsiloxane (PDMS) and cycloolefin copolymer (COC); the inorganic material includes: one or more of glass, quartz and transmission ceramic materials; the refractive index of the light-adjusting interlayer light-transmitting plate is larger than that of air, and the transmittance in a visible light wave band is higher than 90%. When the light-adjusting interlayer light-transmitting plate is spliced and expanded for use, the side edges of the strip-shaped light sources are removed, and the other side edges are attached to the reflecting strips or blackened so as to prevent light crosstalk.
In this embodiment, the manufacturing process of the light-transmitting plate body includes: firstly, preparing two single-layer light-transmitting plates with the same shape, then forming a designed light-dimming microstructure dot pattern on one surface of the single-layer light-transmitting plate through the process technologies of screen printing, ink-jet printing, laser direct writing or photoetching, aligning and attaching the edges of the two light-transmitting plates, and enabling the light-dimming microstructure dots to be positioned in a hollow interlayer between the two single-layer light-transmitting plates; the thickness of the hollow interlayer is determined by the height of the protrusions of the forming mesh points, and the interlayer space is filled with air or the interlayer frame is sealed by vacuumizing so as to improve the silencing effect of the building door and window.
In the embodiment, the light-adjusting microstructure mesh points are laid on the whole surface between two single-layer light-transmitting plates, so that the building door and window uniformly emit light when a strip-shaped light source is turned on; the calculation method of the distribution of the mesh points of the dimming microstructure comprises the following steps:
calculating the illumination distribution on the surface of the interlayer after the strip light source enters the light-adjusting interlayer light-transmitting plate;
mapping the dot distribution according to the calculated illumination distribution;
when the building door and window is formed by splicing a plurality of dimming interlayer light-transmitting plates, each dimming interlayer light-transmitting plate is an independent splicing unit, and the design and calculation of the mesh point distribution are carried out on the dimming interlayer light-transmitting plates one by one.
Further, when the distribution of the dots of the dimming microstructure is calculated, each group of strip-shaped light sources is regarded as formed by connecting a plurality of point light sources in the length direction; the thickness of the light-adjusting interlayer light-transmitting plate and the thickness direction of the light source in the light-adjusting interlayer light-transmitting plateThe light emitting size is far smaller than the side length of the sandwich light-transmitting plate, so that the transmission distance of light in the thickness direction can be ignored; the luminous intensity distribution of each point light source meets the Lambert cosine formula: i isθ＝I0Cos θ, wherein I0Is the light intensity of the light source in the direction of the normal of the outgoing light, IθIs the light intensity of the light source in the direction with an angle theta with the normal direction of the emergent light.
In this embodiment, the calculating of the distribution of the dots of the dimming microstructure specifically includes the following steps:
establishing a reference plane rectangular coordinate system by using the bottom surface of the light-adjusting interlayer light-transmitting plate, transmitting light rays emitted by the point light source in the interlayer light-transmitting plate, solving the illumination intensity of the point light source at any point on the bottom surface of the light-transmitting plate by using a light intensity distribution cosine law and an illumination square inverse ratio law, and accumulating or integrating the illumination intensities of all point light sources on the side strip-shaped light source at the point to obtain the illumination intensity of any point on the interlayer of the interlayer light-transmitting plate;
and for the light-dimming interlayer light-transmitting plate with the strip-shaped light sources on the multiple sides, calculating the illuminance of each light source at a certain point of the interlayer surface of the light-dimming interlayer light-transmitting plate, and then summing the illuminances of the light sources at the point in an accumulated manner to obtain the illuminance of any point on the interlayer surface of the light-dimming interlayer light-transmitting plate with the strip-shaped light sources on the multiple sides.
And measuring the lowest illumination of the interlayer surface of the light-dimming interlayer light-transmitting plate according to the illumination of any point on the interlayer surface of the light-dimming interlayer light-transmitting plate obtained through calculation, and setting the mesh point density distribution of the interlayer surface by referring to the difference between the illumination of any point and the lowest illumination, so that the mesh point distribution which enables the light-dimming interlayer light-transmitting plate to uniformly emit light is obtained.
Specific example 1:
as shown in fig. 1, this embodiment describes a hexagonal spliced light-dimming sandwich light-transmitting plate 1 for a building, in which a hollow layer 13 is disposed between an upper single-layer light-transmitting plate 11 and a lower single-layer light-transmitting plate 12, a light-dimming microstructure mesh point 3 with a diameter of about 50 micrometers is attached to a lower surface of the upper layer light-transmitting plate, and a hollow sandwich 13 is formed between the two layers of light-transmitting plates after the light-dimming microstructure mesh point is attached to the lower layer light-transmitting plate. Each edge of the sandwich light-transmitting plate is a straight edge without specific angle constraint, and a hexahedron is formed. This printing opacity panel is for can adjusting luminance glass, places a set of bar luminous light source lamp strip 2 at distance intermediate layer printing opacity panel side 0.2mm department, forms the unilateral and advances light, and the transmission light rethread intermediate layer printing opacity panel of getting into makes the printing opacity panel luminous through the mesh point scattering of adjusting luminance between the intermediate layer. The size of a light emitting area of the side-in type strip-shaped light source 2 is smaller than the thickness of the interlayer light-transmitting plate 1, the central wavelength is the indoor visible light illumination range, when the light source light bar 2 does not emit light, the interlayer light-transmitting plate 1 is equal to common glass and is in a transparent state, and the micron-sized dimming microstructure dots 3 are invisible to naked eyes; when the light source 2 emits light, light enters the light-transmitting plate from the side edge of the sandwich light-transmitting plate 1 and is totally reflected and propagated, and when meeting the light-adjusting microstructure mesh points 3, the light is scattered out, so that a door frame or a window embedded in the sandwich light-transmitting plate 1 emits light flux scattered out by the mesh points, and auxiliary illumination is formed indoors; when the luminous flux of the light source 2 is adjusted, the indoor illumination intensity can be adjusted through the interlayer light-transmitting plate 1.
The interlayer light-transmitting plate 1 is made of silica glass materials, the preparation process comprises the steps of firstly preparing two single-layer light-transmitting plates with the same shape, forming a designed mesh point diagram on one surface of the upper single-layer light-transmitting plate by a silk screen printing technology, marking the surface, aligning and attaching the surface and the edge of the other light-transmitting plate, and enabling the attached mesh points to be located in a hollow interlayer between the two layers of light-transmitting plates. The thickness of the interlayer is determined by the height of the bumps of the molding mesh points, the hollow interlayer is vacuumized to reach a vacuum state, and then the edges of the two pieces of glass are sealed to form the vacuum interlayer light-transmitting plate structure.
The light-dimming sandwich light-transmitting plate 1 for the building can be installed, matched and spliced and expanded according to the shapes of building doors and window frames, as shown in fig. 2, three light-dimming sandwich light-transmitting plates 1 are spliced and combined along the side edges, and reflection strips are attached to the rest side edges except the side edge where a light source is placed, so that the profile appearance after splicing and expansion is matched with a special-shaped building door and window frame, and finally the special-shaped building door and window frame 4 realized after splicing is as shown in fig. 2. At the moment, the three interlayer light-transmitting plates are provided with independent strip-shaped light sources and independent mesh point distribution, each light-adjusting interlayer light-transmitting plate assembly unit can independently perform light-emitting and light-shade light-adjusting control, and the brightness of the combined door and window glass can be integrally adjusted.
The light-adjusting microstructure mesh points 3 are laid on the whole surface between the sandwich light-transmitting plates 1, so that the building door and window can uniformly emit light when a side light source is turned on. The method for calculating the dot distribution mainly includes two steps, namely, an illuminance analysis and a generation of the interlayer dot density distribution according to the illuminance analysis, and the flow of the method is shown in fig. 3 and 4, and will be described in detail in embodiments 2 and 3.
Specific example 2:
as shown in fig. 5, the black thin solid line represents an irregular quadrilateral building sandwich light-transmitting plate, micron-sized dimming microstructure dots are attached between the sandwich light-transmitting plates by the photolithography technique, and the dots are laid on the whole sandwich surface. Two adjacent sides of this trapezoid intermediate layer printing opacity panel are placed a LED luminous light source lamp strip (light source 1 and 2) respectively after the polishing, and the lamp strip base plate is flexible substrate, and the contour fit of lamp strip shape and intermediate layer printing opacity panel, the interval on lamp strip and this limit is 0.35 mm. The central wavelength of the LED light source lamp strip is 450nm, 525nm and 620nm, and the thickness of the interlayer light-transmitting plate and the light-emitting size of the LED light source in the thickness direction of the plate are far smaller than the side length of each light-transmitting plate. In addition, the light intensity distribution of the LED light source satisfies the characteristics of a lambertian radiator.
On the basis, the interlayer surface illumination of the trapezoid building interlayer light-transmitting plate is analyzed, and the method comprises the following steps:
s1: establishing a two-dimensional rectangular coordinate system for the interlayer surface of the trapezoid interlayer light-transmitting plate, and respectively placing the two rectangular coordinate systems with the length of w on two adjacent side edges1And w2The brightness in the normal direction is I1And I2The strip light sources are respectively marked as light sources 1 and 2 and marked by blue lines; the included angle alpha between the strip-shaped light source and the X axis; coordinates (a, b) of point light sources in the length direction of the bar light source, and coordinates (a) corresponding to point light sources at the end of the bar light source1，b1) And (a)2，b2) (ii) a Coordinate (x) of any point on sandwich surface of sandwich light-transmitting plate0，y0) Coordinate (x)0，y0) The value range of the light-transmitting sandwich plate is limited to the area surrounded by the black thin solid line representing the sandwich light-transmitting plate; unit normal vector of emergent light normal of strip light source
And
a vector of point light source in the length direction of the strip light source pointing to any point on the interlayer surface of the interlayer light-transmitting plate
And
(Vector)
and
angle theta1Vector of motion
And
angle theta2. The included angle alpha is calculated by taking the X axis as an angular bisector of the included angle formed by the strip-shaped light sources so that the included angles alpha formed by the two strip-shaped light sources and the X axis are the same angle.
S2: defining k as the slope of the straight line of the strip light source, the slope satisfies:
k＝tanα
length w1The coordinates of any point on the strip-shaped light source satisfy that:
b＝k·a
length w2The coordinates of any point on the strip-shaped light source satisfy that:
b＝-k·a
the unit normal vector
Satisfies the following conditions:
the unit normal vector
Satisfies the following conditions:
the vector
Satisfies the following conditions:
wherein the coordinates (a, b) of the point light sources are limited to the strip light sources w1Within the domain of definition of (c);
the vector
Satisfies the following conditions:
wherein the coordinates (a, b) of the point light sources are limited to the strip light sources w2Within the domain of definition of (c);
the differential dw in the length direction of the strip light source satisfies:
theta is1Satisfies the following conditions:
theta is2Satisfies the following conditions:
s3: defining the differential dw representing a point source in the direction of the length of the strip light source, for a brightness I1Of the stripe light source of (1) which differentiates the luminance dI in the direction of the normal of the outgoing light1Satisfies the following conditions:
for brightness of I2Of the stripe light source of (1) which differentiates the luminance dI in the direction of the normal of the outgoing light2Satisfies the following conditions:
then has an angle theta with the normal direction of the emergent light1In the angular direction, the differential brightness dI1(θ1) Satisfies the following conditions:
dI1(θ1)＝cosθ1·dI1
differential brightness dI2(θ2) Satisfies the following conditions:
dI2(θ2)＝cosθ2·dI2
s4: according to the inverse square law of illumination, the differential illumination of the differential point light source in the length direction of the strip-shaped light source at any point on the sandwich surface of the sandwich light-transmitting plate meets the following requirements:
s5: for any point on the interlayer surface of the interlayer light-transmitting plate, the illuminance E is the integral of the differential illuminance, namely:
the above formulas are substituted into the calculation to obtain: the illuminance E of any point on the interlayer surface of the interlayer light-transmitting plate meets the following requirements:
based on the illuminance value obtained by the illuminance analysis, the dot design is carried out on the trapezoid light-transmitting plate, and the steps are as follows:
s1: defining the mesh point density beta as the projection area of the mesh points in a unit area on the sandwich surface of the trapezoid sandwich light-transmitting plate, wherein the value of the beta is between 0 and 1, and the maximum value of the mesh point density beta is0＝1；
S2: the magnitude of the illuminance E (x) of any point obtained based on the above analysis0，y0) Defining the minimum illumination value of the interlayer surface of the interlayer light-transmitting plate as Emin；
S3: defining a proportionality coefficient R with a value between 0 and 1 so as to ensure that the mesh point density beta (x) of any point on the interlayer surface of the interlayer light-transmitting plate0，y0) Satisfies the following conditions:
β(x0，y0)＝R·β0
wherein R satisfies:
specific example 3:
as shown in fig. 6, the black thin solid line represents an irregular hexagonal building sandwich light-transmitting plate made of quartz, and micron-sized dimming microstructure dots are attached to the surface of the light-transmitting plate by screen printing and laid in the interlayer of the sandwich light-transmitting plate. Two opposite edges of the irregular hexagonal interlayer light-transmitting plate are polished and then respectively placed with LED light-emitting light source light bars (light sources 1 and 2), the light bar substrates are flexible substrates, and the shapes of the light bars are attached to the outline of the interlayer light-transmitting plate. The distance between the lamp strip and the edge is 0.24 mm. The central wavelength range of the LED luminous light source light bar is 450nm, 525nm and 620nm, and the thickness of the light-transmitting plate and the luminous size of the LED luminous light source in the thickness direction of the plate are far smaller than the side length of each interlayer light-transmitting plate. In addition, the light intensity distribution of the LED light source and the like satisfy lambertian radiator characteristics.
On the basis, the interlayer surface illumination of the irregular hexagonal building interlayer light-transmitting plate is analyzed, and the method comprises the following steps:
s1: establishing a two-dimensional rectangular coordinate system for the interlayer surface of the irregular hexagonal building interlayer light-transmitting plate, and respectively placing the two sides opposite to the graph with the length of w1、w2The strip-shaped LED light sources are respectively called as No. 1 light source and No. 2 light source and marked by blue lines; coordinates (a, b) of the point light source in the length direction of the bar light source. The following steps take the No. 1 light source as an example, and the coordinates of the point light source meet the following requirements:
b＝ka
wherein k represents a length w1The slope of the light source. Since the two light sources are symmetrical about the X-axis, the slopes k of the two light sources are opposite to each other. Coordinate (x) of any point on sandwich surface of sandwich light-transmitting plate0，y0) Coordinate (x)0，y0) The value range of the light-transmitting sandwich plate is limited to the area surrounded by the black thin solid line representing the sandwich light-transmitting plate; the unit normal vectors of the emergent light normals of the two strip-shaped light sources are respectively
The vectors of point light sources in the length direction of the two strip-shaped light sources pointing to any point on the interlayer surface of the interlayer light-transmitting plate are respectively
(Vector)
And
the included angles are theta1、θ2. The coordinates of the left and right end points of the No. 1 light source on the X axis are respectively a11、a12The coordinates of the left and right end points of No. 2 light source on the X axis are respectively a21、a22。
S2: since the straight line of the light source has a fixed slope, taking No. 1 light source as an example, the unit normal vector thereof
Can be expressed as:
(Vector)
can be expressed as:
then cos θ can be obtained1The value of (c):
wherein the length differential dw of the light source satisfies:
s3: brightness I of No. 1 light source in normal direction of emergent light1Define a stripe lightDifferential brightness dI in the normal direction of the outgoing light of differential dw in the source length direction1Which satisfies:
then has an angle theta with the normal direction of the emergent light1In the direction of the angle, the differential brightness dI of the differential point light source satisfies:
dI＝cosθ1dI1
s4: according to the inverse square law of illumination, the differential illumination of the differential point light source in the length direction of the No. 1 light source at any point on the sandwich surface of the sandwich light-transmitting plate meets the following requirements:
s5: to any point on the interlayer surface of the interlayer light-transmitting plate, the illumination E1Is the integral of the differentiated illumination, i.e.:
the above formulas are substituted into the operation to obtain the illumination expression of any point on the interlayer surface of the interlayer light-transmitting plate. The illumination E of No. 2 light source at any point on the interlayer surface of the interlayer light-transmitting plate can be obtained by repeating S1-S5 for No. 2 light source2. And finally, adding the illumination intensities of the two light sources to obtain the total illumination intensity E of any point on the interlayer surface of the interlayer light-transmitting plate:
E(x0，y0)＝E1+E2
specifically, this total illumination may be expressed as:
based on the illuminance value obtained by the illuminance analysis, the mesh point design is carried out on the irregular hexagonal interlayer light-transmitting plate, and the steps are as follows:
s1: defining the mesh point density beta as the projection area of the mesh points in the unit area on the interlayer surface of the interlayer light-transmitting plate, the value of beta is between 0 and 1, and the maximum value of the mesh point density beta0＝1；
S2: the magnitude of the illuminance E (x) of any point obtained based on the above analysis0，y0) Defining the minimum illumination value of the interlayer surface of the interlayer light-transmitting plate as Emin；
S3: defining a proportionality coefficient R with a value between 0 and 1 so as to ensure that the mesh point density beta (x) of any point on the interlayer surface of the interlayer light-transmitting plate0，y0) Satisfies the following conditions:
β(x0，y0)＝R·β0
wherein R satisfies:
therefore, a mesh point density distribution design chart based on the interlayer surface illumination of the interlayer light-transmitting plate can be obtained.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (9)
1. A light-dimming interlayer light-transmitting plate for a building, which can be spliced, is characterized in that a light-transmitting plate body of the light-dimming interlayer light-transmitting plate mainly comprises an upper single-layer light-transmitting plate, a lower single-layer light-transmitting plate and a hollow interlayer between the two layers of light-transmitting plates, the hollow interlayer is an air layer or a vacuum layer, micron-sized light-dimming microstructure dots are attached between the upper single-layer light-transmitting plate and the lower single-layer light-transmitting plate, the light-transmitting plate body is an arbitrary polygon with straight edges, and no angle constraint exists between every two adjacent edges; one or more groups of strip-shaped light sources are arranged on any one side or multiple sides of the light-transmitting plate body to form single-side incident light or multiple-side incident light, and the transmitted light entering the light-transmitting plate body is scattered through the light-adjusting microstructure dots in the hollow interlayer to enable the light-transmitting plate to emit light; according to the shape of building door and window, the intermediate layer printing opacity panel of adjusting luminance matches the building door and window with monolithic intermediate layer printing opacity panel of adjusting luminance, realizes the luminous and the light and shade regulation of whole door and window, perhaps uses two piece at least intermediate layer printing opacity panels of adjusting luminance as the piece unit, along printing opacity panel body side concatenation, combination, makes the intermediate layer printing opacity panel appearance of adjusting luminance after the concatenation extension match the building door and window, and every piece unit independently gives out light and shade regulation, or gives out light and shade regulation to the intermediate layer printing opacity panel of adjusting luminance after the combination wholly.
2. The building dimming interlayer light-transmitting plate capable of being spliced according to claim 1, wherein each group of strip-shaped light sources mainly comprises a light bar substrate and a plurality of LED point light sources arranged along the length direction of the light bar substrate; the diameter of the dimming microstructure mesh point is not more than 100 micrometers, when a light source does not emit light, the dimming interlayer light-transmitting plate is equal to common glass and is in a transparent state, and the dimming microstructure mesh point is invisible to naked eyes; when the light source emits light, light enters the dimming interlayer light-transmitting plate from the side where the strip-shaped light source is arranged and is totally reflected and propagated, and when meeting the dimming microstructure mesh points, the light is scattered out, so that the dimming interlayer light-transmitting plate emits light and performs auxiliary illumination on the indoor space; when the brightness of the light source is adjusted, the luminous intensity of the light-adjusting interlayer light-transmitting plate is changed, so that the indoor illumination intensity is adjusted.
3. The light-transmitting plate with the dimming interlayer for the building, which can be spliced according to claim 1, is characterized in that the size of a light-emitting area of the strip-shaped light source is smaller than the thickness of the light-transmitting plate body, so that the propagation distance of light rays in the thickness direction can be ignored; the central wavelength range of the strip-shaped light source is 380nm to 780 nm; the strip-shaped light source is attached to one or more side edges of the light-transmitting plate body, and the distance between the strip-shaped light source and the side edges of the light-transmitting plate body is not more than 0.5 mm; when the building door and window is formed by splicing and expanding at least two dimming interlayer light-transmitting plates, dimming microstructure mesh points are uniformly distributed in each dimming interlayer light-transmitting plate and are distributed according to the position of a light source.
4. The building dimming interlayer light-transmitting plate capable of being spliced according to claim 1, wherein the dimming interlayer light-transmitting plate is made of an organic material or an inorganic material, and the organic material comprises: one or more of polyethylene, polypropylene, polyethylene naphthalate, polycarbonate, polymethyl acrylate, polymethyl methacrylate, cellulose acetate butyrate, siloxane, polyvinyl chloride, polyvinyl alcohol, polyethylene terephthalate, modified polyethylene terephthalate, polydimethylsiloxane and cycloolefin copolymer; the inorganic material includes: one or more of glass, quartz and transmission ceramic materials; the refractive index of the light-dimming interlayer light-transmitting plate is greater than that of air, and the transmittance in a visible light wave band is higher than 90%; when the light-adjusting interlayer light-transmitting plate is spliced and expanded for use, the side edges of the strip-shaped light sources are removed, and the other side edges are attached to the reflecting strips or blackened so as to prevent light crosstalk.
5. The light-dimming sandwich light-transmitting plate for the building, which can be spliced according to claim 1, is characterized in that the manufacturing process of the light-transmitting plate body comprises the following steps: firstly, preparing two single-layer light-transmitting plates with the same shape, then forming a designed light-dimming microstructure dot pattern on one surface of the single-layer light-transmitting plate through the process technologies of screen printing, ink-jet printing, laser direct writing or photoetching, aligning and attaching the edges of the two light-transmitting plates, and enabling the light-dimming microstructure dots to be positioned in a hollow interlayer between the two single-layer light-transmitting plates; the thickness of the hollow interlayer is determined by the height of the protrusions of the forming mesh points, and the interlayer space is filled with air or the interlayer frame is sealed by vacuumizing so as to improve the silencing effect of the building door and window.
6. The light-dimming sandwich light-transmitting plate for the building, which can be spliced according to claim 1, is characterized in that the light-dimming microstructure mesh points are laid on the whole surface between two single-layer light-transmitting plates, so that a building door window uniformly emits light when a strip-shaped light source is turned on; the calculation method of the distribution of the mesh points of the dimming microstructure comprises the following steps:
calculating the illumination distribution on the surface of the interlayer after the strip light source enters the light-adjusting interlayer light-transmitting plate;
mapping the dot distribution according to the calculated illumination distribution;
when the building door and window is formed by splicing a plurality of dimming interlayer light-transmitting plates, each dimming interlayer light-transmitting plate is an independent splicing unit, and the design and calculation of the mesh point distribution are carried out on the dimming interlayer light-transmitting plates one by one.
7. The light-transmitting plate with the dimming interlayer for the building, which can be spliced according to claim 6, is characterized in that when the distribution of the dots of the dimming microstructure is calculated, each group of strip-shaped light sources is regarded as being formed by connecting a plurality of point light sources in the length direction; the thickness of the light-adjusting interlayer light-transmitting plate and the light-emitting size of the light source in the thickness direction of the light-adjusting interlayer light-transmitting plate are far smaller than the side length of the interlayer light-transmitting plate, so that the propagation distance of light in the thickness direction can be ignored; the luminous intensity distribution of each point light source meets the Lambert cosine formula: i isθ＝I0Cos θ, wherein I0Is the light intensity of the light source in the direction of the normal of the outgoing light, IθIs the light intensity of the light source in the direction with an angle theta with the normal direction of the emergent light.
8. The building dimming interlayer light-transmitting plate capable of being spliced according to claim 6, wherein the calculation of the distribution of the dots of the dimming microstructure specifically comprises the following steps:
establishing a reference plane rectangular coordinate system by using the bottom surface of the light-adjusting interlayer light-transmitting plate, transmitting light rays emitted by the point light source in the interlayer light-transmitting plate, solving the illumination intensity of the point light source at any point on the bottom surface of the light-transmitting plate by using a light intensity distribution cosine law and an illumination square inverse ratio law, and accumulating or integrating the illumination intensities of all point light sources on the side strip-shaped light source at the point to obtain the illumination intensity of any point on the interlayer of the interlayer light-transmitting plate;
and for the light-dimming interlayer light-transmitting plate with the strip-shaped light sources on the multiple sides, calculating the illuminance of each light source at a certain point of the interlayer surface of the light-dimming interlayer light-transmitting plate, and then summing the illuminances of the light sources at the point in an accumulated manner to obtain the illuminance of any point on the interlayer surface of the light-dimming interlayer light-transmitting plate with the strip-shaped light sources on the multiple sides.
9. The splicing type light-dimming sandwich light-transmitting plate for buildings as claimed in claim 8, wherein the lowest illumination of the sandwich surface of the light-dimming sandwich light-transmitting plate is measured according to the calculated illumination of any point on the sandwich surface of the light-dimming sandwich light-transmitting plate, and the dot density distribution of the sandwich surface is set by referring to the difference between the illumination of any point and the lowest illumination, so as to obtain the dot distribution which enables the light-dimming sandwich light-transmitting plate to uniformly emit light.
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