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公开(公告)号：WO2018157903A1
公开(公告)日：2018-09-07
申请号：PCT/EP2017/000273
申请日：2017-02-28
Applicant: COELUX S.R.L. , UNIVERSITÀ DEGLI STUDI DELL'INSUBRIA
Inventor： DI TRAPANI, Paolo , MAGATTI, Davide , LOTTI, Antonio , KRAMES, Michael Ragan , MOLTENI, Matteo
Abstract: A light source (25) for emitting collimated light (29) in particular for a large area luminaire (21) comprises a light guide unit (43) for guiding light by total internal reflection. The light guide unit comprises a plurality of localized light source regions (57) at a main front face (55A) for having light pass there through. The light source (25) further comprises a plurality of light emitting units (41) for emitting light into the light guide strips (91) through respective portions of the at least one coupling face (47) of the light guide unit (43), and a collimation unit (45) extending along the main front face (55A) and comprising a plurality of collimating elements. At least one light emitting unit (41) is configured as a light input coupling assembly (250) to receive collected natural light from a fiber (249) and to provide the received natural light to the light guide unit (43). The light source (25) can be implemented in a sunlight-based illumination system (241) collecting and providing natural light to the light source (25).
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公开(公告)号：WO2017084756A1
公开(公告)日：2017-05-26
申请号：PCT/EP2016/001943
申请日：2016-11-19
Applicant: COELUX S.R.L. , UNIVERSITÀ DEGLI STUDI DELL'INSUBRIA
Inventor： DI TRAPANI, Paolo , MAGATTI, Davide , LOTTI, Antonio , GATTI, Giorgio
IPC: F21V7/00 , F21V7/22 , F21S8/02 , F21V3/04 , F21Y103/10 , F21Y115/10
CPC classification number: F21V7/22 , F21S8/026 , F21V3/049 , F21V7/0008 , F21V7/005 , F21V7/0083 , F21Y2103/10 , F21Y2115/10
Abstract: A lighting system (100A, 100B) comprises a light source (102) for emitting a light beam stripe (220B) with a plurality of light emitting units (603, 803 A, 803B) forming an array in the longitudinal direction (X), and an optical element (870) at the exit side of the light source (102) extending across the plurality of light emitting units, and configured to enlarge the beam divergence in the transversal direction. The lighting system (100A, 100B) further comprises a reflector unit, a support structure (210), and a reflective surface (104) with an essentially linear shape in the longitudinal direction (X) and a curved shape in the longitudinal transverse direction (Y), and a chromatic diffusing layer (108) comprising a plurality of nanoparticles embedded in a matrix, wherein the chromatic diffusing layer (108) is positioned such that at least a portion of the reflected light beam (220A) passes through the chromatic diffusing layer (108), thereby generating diffuse light by scattering more efficiently the short-wavelengths components of the light in the visible spectral range than the long-wavelength components of the light in the visible spectral range.
Abstract translation: 照明系统（100A，100B）包括用于发射具有形成阵列的多个发光单元（603,803A，803B）的光束条纹（220B）的光源（102） 在所述光源（102）的出射侧沿着所述多个发光单元延伸的光学元件（870），并且被配置为在所述横向方向上扩大所述光束发散。 照明系统（100A，100B）还包括反射器单元，支撑结构（210）和反射表面（104），所述反射表面在纵向方向（X）上具有基本上线性的形状并且在纵向横向方向上具有弯曲形状 Y）以及包括嵌入基体中的多个纳米颗粒的彩色漫射层（108），其中所述彩色漫射层（108）被定位成使得所述反射光束（220A）的至少一部分穿过所述彩色漫射 从而通过比可见光谱范围内的光的长波长分量更有效地散射可见光谱范围内的光的短波长分量来产生漫射光。
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公开(公告)号：WO2017036502A1
公开(公告)日：2017-03-09
申请号：PCT/EP2015/069790
申请日：2015-08-28
Applicant: COELUX S.R.L. , UNIVERSITÀ DEGLI STUDI DELL'INSUBRIA
Inventor： DI TRAPANI, Paolo , MAGATTI, Davide , LOTTI, Antonio , KRAMES, Michael Ragan
IPC: F21V8/00 , F21K99/00 , F21S8/04 , F21V7/00 , F21Y113/00
CPC classification number: G02B6/0078 , F21S8/04 , F21Y2113/13 , F21Y2115/10 , G02B6/0013 , G02B6/0036 , G02B6/005 , G02B6/0068 , G02B6/0073
Abstract: A light source (25) for emitting collimated light (29) in particular for a large area luminaire (21) comprises a light guide unit (43) optionally comprising a plurality of light guide strips (91) configured for guiding light received at the at least one lateral coupling face (47), for example, by total internal reflection. The light guide strips comprise a plurality of localized light source regions (57) at a main front face (55A) for having light pass there through, wherein the light source regions (57) are provided along the light guide strip (91) within a non-source region (59). The light source (25) further comprising a plurality of light emitting units (41) for emitting light into the light guide strips (91) through respective portions of the at least one coupling face (47), and a collimation unit (45) extending along the main front face (55A) and comprising a plurality of collimating elements. Each collimating element, which may be a compound parabolic concentrator or TIR lens, comprises an input side and an output side, is optically associated to one of the plurality of light source regions (57), and is configured to receive light emerging from the associated light source region (57) at its input side and to emit collimated light (29) from a respective collimated light emitting region (61) formed at its output side. In another embodiment the light emitting units are configured to emit primary light having a spectral distribution that compensates for spectral losses accumulated by the primary light while propagating within the light guide unit. In a further embodiment the collimated light has a direction that is tilted with respect to the normal to a light emitting face of the light source. In an additional embodiment the ration of the area of the plurality of light source regions with respect to the area of the main front face and/or the area of the non-source region is less than or equal to 20%. In a further embodiment a plurality of reflective structures is associated with the light source regions.
Abstract translation: 用于发射准直光（29）的光源（25），特别是用于大面积照明器（21）的光源（25）包括可选地包括多个导光条（91）的导光单元（43），所述光导条被配置为引导在 至少一个横向联接面（47），例如通过全内反射。 导光条在主正面（55A）处包括多个局部光源区（57），用于使光通过其中，其中光源区（57）沿着导光条（91）设置在一个 非源地区（59）。 所述光源（25）还包括多个发光单元（41），用于通过所述至少一个耦合面（47）的各个部分将光发射到所述导光条（91）中;以及准直单元（45），其延伸 沿着主前表面（55A）并且包括多个准直元件。 可以是复合抛物面聚光器或TIR透镜的每个准直元件包括输入侧和输出侧，与多个光源区域（57）中的一个光学相关联，并且被配置为接收从相关联的光源 光源区域（57），并且从形成在其输出侧的各个准直发光区域（61）发射准直光（29）。 在另一个实施例中，发光单元被配置为发射具有光谱分布的初级光，该光谱分布在光导单元内传播的同时补偿由初级光积累的光谱损耗。 在另一实施例中，准直光具有相对于光源的发光面的法线倾斜的方向。 在另外的实施例中，多个光源区域相对于主前面区域和/或非源区域的面积的比例小于或等于20％。 在另一实施例中，多个反射结构与光源区域相关联。
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Patent Agency Ranking
公开(公告)号：WO2017008824A1
公开(公告)日：2017-01-19
申请号：PCT/EP2015/002319
申请日：2015-11-19
Applicant: COELUX S.R.L. , UNIVERSITÀ DEGLI STUDI DELL'INSUBRIA
Inventor： DI TRAPANI, Paolo , MAGATTI, Davide , LOTTI, Antonio
CPC classification number: G02B5/0242 , B32B17/1022 , B32B2307/416 , C03C17/06 , C03C17/34 , C03C2217/252 , C03C2217/445 , C03C2217/452 , C03C2217/48 , C03C2217/72 , E04F13/077 , F21V7/0008 , F21V7/04 , F21V9/02 , G02B5/0284 , G02B5/0808 , G02B5/10
Abstract: A chromatic diffusing layer (510) comprises a plurality of nanoparticles (37) embedded in a matrix (39), for Rayleigh-like scattering with an average size d in the range 10nm≤d≤240nm, and a ratio between the blue and red scattering optical densities Log[R(450nm)3/Log[R(630nm)] of said chromatic reflective unit falls in the range 5≥γ≥2.5, where R(λ) is the monochromatic normalized specular reflectance of the chromatic reflective unit, which is the ratio between the specular reflectance of the chromatic reflective unit and the specular reflectance of a reference sample identical to the chromatic reflective unit except for the fact that the chromatic diffusing layer does not contain nanoparticles with the size d in the range 10nm ≤d≤240nm and for the direction normal to the reflective layer (508) of the chromatic reflective unit (506), the monochromatic normalized specular reflectance R(λ) of the chromatic reflective unit at a wavelength of 450nm is in the range from about 0.0025 to about 0.15, such as defined by the equations 0.0025≤R(450nm)≤0.15, 0.0025≤R(450nm) ≤0.05, 0.0025≤R(450nm) ≤0.04.
Abstract translation: 彩色漫射层（510）包括嵌入基质（39）中的多个纳米颗粒（37），用于平均尺寸d在10nm≤d≤240nm范围内的瑞利样散射，蓝色和红色之间的比率 散射光密度所述色反射单元的Log [R（450nm）3 / Log [R（630nm）]落在5≥γ≥2.5的范围内，其中R（λ）是彩色反射单元的单色归一化镜面反射率， 其是彩色反射单元的镜面反射率与与彩色反射单元相同的参考样品的镜面反射率之间的比率，除了色散扩散层不含有尺寸d在10nm≤d范围内的纳米颗粒 ≤240nm，并且对于与色反射单元（506）的反射层（508）垂直的方向，波长450nm处的色反射单元的单色归一化镜面反射率R（λ）在约 0.0025〜0.15左右，例如0.0025≤R（450nm）≤0.15,0.0025≤R（450nm）≤0.05,0.0025≤R（450nm）≤0.04的方程式。
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公开(公告)号：WO2022023868A2
公开(公告)日：2022-02-03
申请号：PCT/IB2021/056498
申请日：2021-07-19
Applicant: COELUX S.R.L. , UNIVERSITÀ DEGLI STUDI DELL'INSUBRIA
Inventor： DI TRAPANI, Paolo , RAGAZZI, Paolo , FARINA, Davide , LOTTI, Antonio , POHL, Wilfried , DANLER, Andreas , KURZ, Wilfried , GSTREIN, Manfred
IPC: F21V9/02 , F21V13/12 , F21Y2105/10 , F21Y2115/10
Abstract: The present invention relates in general terms to a lighting device to simulate natural lighting, thus capable of generating at least two light components with different angular distributions having different correlated colour temperature or CCT. The lighting device to simulate natural lighting thus conceived is able to generate a light with two chromatic components having different angular distributions, however effectively preventing the light at a higher colour temperature (bluish light) from generating glare effects or from giving the environment an unnatural colouring that the natural light of the sky and the sun would not produce.
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公开(公告)号：WO2018091060A1
公开(公告)日：2018-05-24
申请号：PCT/EP2016/001944
申请日：2016-11-19
Applicant: COELUX S.R.L. , UNIVERSITÀ DEGLI STUDI DELL'INSUBRIA
Inventor： DI TRAPANI, Paolo , MAGATTI, Davide , LOTTI, Antonio , MOLTENI, Matteo , GATTI, Giorgio
Abstract: In an aspect, a lighting system (1) comprises a lighting unit (11) with a light source (31) and a dichroic light exiting surface (15), wherein the lighting unit (11) is configured for emitting dichroic light from the dichroic light exiting surface (15). The emitted dichroic light includes a directional light portion (37) of direct light (17) and a diffused light portion (39) of diffused light (19) with a another larger correlated color temperature. The lighting system further comprises an appearance affecting optical system (13) with a plurality of structural elements (40, 91, 93, 101, 105) that comprise surfaces that delimit a plurality of diffused light passages (14, 103, 107), and comprise direct light illuminated surface regions (25), which are subject to the illumination with direct light (17) from respectively associated affected direct light providing areas (81) of the dichroic light exiting surface (15). Moreover, the affected direct light providing areas (81) cover at least 70% of the dichroic light exiting surface (15), and the direct light (17) from at least one affected direct light providing area (81) and diffused light (19) propagate within at least one of the diffused light passages (14, 103, 107).
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公开(公告)号：WO2020201939A1
公开(公告)日：2020-10-08
申请号：PCT/IB2020/052849
申请日：2020-03-26
Applicant: COELUX S.R.L.
Inventor： LOTTI, Antonio , LI, Chen , SCHREIBER, Peter , HÖFER, Bernd
IPC: F21V5/00 , F21V11/06 , F21V3/06 , F21Y105/10 , F21Y115/10
Abstract: The present disclosure is directed to a direct-light generator (10) for sun-sky-imitating illumination devices (100) configured for generating natural light similar to that from the sun and the sky, comprising a first emitting surface (22) and an array of light-emitting devices (21) configured to generate from a primary light a direct light (13) which exits the first emitting surface (22) along a direct light direction (15), wherein the direct light (13) exiting the first emitting surface (22) has a luminance profile (Ldirect(x, y, θ, φ)) which has a narrow peak (14) in the angular distribution around the direct-light direction (15) and is uniform across the first emitting surface (22), wherein each light-emitting device (21) comprises a light emitter (24) having an emitting surface and at least a pair of collimation lenses (25,27) illuminated by the light emitter (24), each pair of collimation lenses (25,27) comprising a pre-collimation lens (27) comprising a light inlet surface (27a) facing the light emitter (24) emitting surface and a light outlet surface (27b), the pre-collimation lens (27) being positioned proximal to the light emitter (24) and a collimation lens (25) comprising a light input surface (25a) and a light output surface (25b), the collimation lens (25) being positioned distal from the light emitter (24), the light emitter (24) and the pre-collimation lens (27) being housed in a hollow housing (26) which is internally coated or made of light absorbing material and has at least an aperture where the collimation lens (25) is positioned, wherein the pre-collimation lens (27) of each pair of collimation lenses (25,27) is configured to emit with a substantially angularly constant intensity and to uniformly illuminate a whole light input surface (25a) of the collimation lens (25) of the pair of collimation lenses (25,27) wherein, with the pre-collimation lens having a pre-collimation lens height (b2), and a base of the input surface (25a) of the collimation lens (25) being spaced apart from a base of the inlet surface (27a) of the pre-collimation lens (27) of a lenses distance (h), the ratio (b2/h) between the pre-collimation lens height (b2) and the lenses distance (h) is comprised in the range of 0.2 – 0.8, more preferably in the range between 0.25 – 0.75 and even more preferably in the range between 0.3 – 0.7; and/or wherein, with the pre-collimation lens (27) having a pre-collimation lens maximum width (b1) and the collimation lens (25) having a collimation lens maximum width (C), the ratio (b1/C) between the pre-collimation lens maximum width (b1) and the collimation lens maximum width (C) is comprised in the range of 0.3 – 0.8, more preferably in the range between 0.35 – 0.75 and even more preferably in the range between 0.4 – 0.7.
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公开(公告)号：WO2020201938A1
公开(公告)日：2020-10-08
申请号：PCT/IB2020/052848
申请日：2020-03-26
Applicant: COELUX S.R.L.
Inventor： MOLTENI, Matteo , RAGAZZI, Paolo , LOTTI, Antonio , MAGATTI, Davide
IPC: F21V13/12 , F21V11/06 , F21V5/00 , F21V3/04 , F21Y115/10 , F21Y105/10
Abstract: The present disclosure is directed to a sun-sky-imitating illumination device (100) for generating natural light similar to that from the sun and the sky, comprising a direct-light generator (10) that comprises a first emitting surface (11) from which a direct light (13) is emitted and a collimated light source (20) configured to generate from a primary light a collimated light (23) which exits an output surface (22) positioned upstream from the first emitting surface (11) with respect to a direct light direction (15), wherein the direct light (13) has a luminance profile (Ldirect(x, y, θ, φ)) which has a first peak in the angular distribution around the direct-light direction (15) and the collimated light (23) exiting the output surface (22) has a luminance profile (Lcoll(x, y, θ, φ)) which has a second peak (14) in the angular distribution around the direct-light direction (15), the second peak being a narrow peak, and a diffused-light generator (50) that is at least partially light-transparent and is positioned downstream of the direct-light generator (10) and comprises a second emitting surface (51) and is configured to cause diffused light (53) at the second emitting surface (51), wherein the sun-sky-imitating illumination device is configured such that the direct-light generator (10) and the diffused-light generator (50) co-operate to form outer light (53,54) at the second emitting surface (51) which comprises a first light component (54) which propagates along directions contained within the narrow peak (14) and a second light component (53) which propagates along directions spaced apart from the narrow peak (14), wherein the first light component (54) has a CCT which is lower than a CCT of the second light component (53), wherein the direct-light generator (10) comprises an optical unit (30) positioned downstream of the output surface (22) of the collimated light source (20) and upstream from the first emitting surface (11) with respect to the direct light direction (15), wherein the optical unit (30) is configured to interact with the collimated light (23) exiting the output surface (22) to generate the direct light (13) emitted from the first emitting surface (11) so that the first peak of the luminance profile (Ldirect(x, y, θ, φ)) of the direct light (13) is larger than the second peak of the luminance profile (Lcoll(x, y, θ, φ)) of the collimated light (23), the optical unit (30) comprising a first planar light mixing element (33,33') characterized by a first response function having a first angular profile with a peak having a first divergence angle (α1, α1') measured as full width at half maximum (FWHM) of the peak, the first planar light mixing element (33,33') being positioned so as to at least partially intercept the collimated light (23) exiting the output surface (22) of the collimated light source (20) and to define a unit input surface (31), and a second planar light mixing element (34) characterized by a second response function having a second angular profile with a peak having a second divergence angle (α2) measured as full width at half maximum (FWHM) of the peak, the second planar light mixing element (34) being positioned downstream of the unit input surface (31) so as to at least partially intercept the light crossing the unit input surface (31) and to define a unit emitting surface (32), wherein the first and second divergence angles (α1. α1', α2) are equal to or smaller than 40° preferably smaller than 30°, more preferably smaller than 20°; and wherein the first (33,33') and second (34) planar light mixing elements are spaced apart from each other at least of a minimum unit depth (z1) measured along the direct light direction (15), configured to obtain uniform luminance of the direct light (13) which exits the first emitting surface (11) of the direct light generator (10).
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