US 12,416,201 B2
Shading device
Yujie Wu, Ecublens (CH); Jérôme Henri Kämpf, Corcelles-Prés-Concise (CH); and Jean-Louis Scartezzini, Lausanne (CH)
Assigned to ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL), Lausanne (CH)
Appl. No. 17/263,266
Filed by ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL), Lausanne (CH)
PCT Filed Apr. 17, 2019, PCT No. PCT/IB2019/053199
§ 371(c)(1), (2) Date Jan. 26, 2021,
PCT Pub. No. WO2020/021347, PCT Pub. Date Jan. 30, 2020.
Claims priority of application No. 102018005890.6 (DE), filed on Jul. 26, 2018.
Prior Publication US 2021/0140232 A1, May 13, 2021
Int. Cl. E06B 9/38 (2006.01); E06B 9/24 (2006.01); E06B 9/32 (2006.01); E06B 9/68 (2006.01); H04N 7/18 (2006.01)
CPC E06B 9/38 (2013.01) [E06B 9/32 (2013.01); H04N 7/18 (2013.01); E06B 2009/2417 (2013.01); E06B 2009/2464 (2013.01); E06B 2009/6818 (2013.01)] 13 Claims
OG exemplary drawing
 
1. Shading device configured to be integrated on a facade of a building wherein the shading device comprises an imaging system configured to exclusively create images of an outside view of the building, wherein the imaging system is integrated with the shading device, wherein the outside view comprises a sky portion and a landscape portion, and the imaging system comprises a lens and a processor,
wherein the imaging system is configured to
determine a directional luminance distribution of the outside view comprising the sky portion and the landscape portion from the images of the outside view comprising the sky portion and the landscape portion;
compute a work-plane illuminance for a target work-plane inside a target room behind the shading device, at each position or state of the shading device, exclusively from the determined directional luminance distribution by making use of a pre-defined model of a target building and quantified light transmission behavior of the shading device, wherein the target work-plane is out of the field of view of the imaging system;
evaluate a glare risk for occupants inside the target room; and
determine an optimal position or state of the shading device which provides an optimal trade-off between work-plane illuminance and glare risk.