A foldable screen for a greenhouse is described. A foldable filter for greenhouse, comprises a foldable substrate and at least one stack of films on the foldable substrate, wherein said at least one stack of films is adapted to —reflect solar infrared radiations in the spectral range from 850 nm to 2,000 nm, and —be transparent to solar radiations in the spectral range from 400 nm to 750 nm, wherein said at least one stack of film comprises: —a first layer of TiO2, ZTO, Si3N4 or NbOx; —a second layer of Ag on top of the first layer, and —a third layer of dielectric on top of the second layer.

A system for controlling light in a facility may include at least one rail longitudinally affixable to an inner portion of a frame of the facility between a first end and a second end of the facility and at a rail-height above a floor of the facility; and at least one opaque/reflective covering tightly and opaquely affixable to the inner portion of the facility frame at a cover-height above the facility floor in a first plane that faces the facility floor and slidably connectable to the at least one rail, the at least one opaque/reflective covering being extendable along the at least one rail between a first covering position and a second covering position to opaquely cover respective at least one longitudinal section of the facility in the first plane when in the second covering position, without substantially covering the facility walls.

Disclosed is a window assembly with slats, including a first window, defining a surface; a first layer, conductive and adhered to a first side of the first window; an added window, connected to the first window at the first side, extending parallel to the first window; wherein a second layer is adhered to the added window, the second layer being conductive and adhered to a first side of the added window; and wherein the first layer or the second layer includes slats which are conductive and movable between a first position in which the slats extend substantially parallel to the surface, and a second position in which the slats are oriented substantially perpendicular to the surface; and wherein the first layer and the second layer are connectable to a voltage source for applying a voltage difference between the first layer and the second layer, so the slats are movable.

A variable thermal insulation assembly includes at least one array comprising a plurality of sheets of film, wherein the plurality of sheets are in a stacked arrangement and each sheet is bonded to an adjacent sheet along a plurality of longitudinally extending regions such that each pair of adjacent sheets form a plurality of longitudinally extending cavities between adjacent regions of the adjacent sheets, a support frame comprising end elements, wherein the support frame frames the plurality of sheets, wherein support frame is coupled to the array to support the array such that the array may transition between an expanded state in which the array is expanded, and a compressed state in which the array is compressed, within the plane of the frame along the direction perpendicular to the longitudinal axis such that the longitudinally extending cavities are expanded or compressed, wherein in the expanded state, the front edge conforms to one of the second end of the support frame or a second front edge of a second array to form a seal that inhibits air flow between the front edge and the one of the second end of the support frame or the second front edge of the second array.

A system for controlling light in a facility may include at least one rail longitudinally affixable to an inner portion of a frame of the facility between a first end and a second end of the facility and at a rail-height above a floor of the facility; and at least one opaque/reflective covering tightly and opaquely affixable to the inner portion of the facility frame at a cover-height above the facility floor in a first plane that faces the facility floor and slidably connectable to the at least one rail, the at least one opaque/reflective covering being extendable along the at least one rail between a first covering position and a second covering position to opaquely cover respective at least one longitudinal section of the facility in the first plane when in the second covering position, without substantially covering the facility walls.

Insulated glazing panels with integrated blinds. The insulated glazing panels comprise a first body covered by a first low-e coating, and a second body covered by a second low-e coating. A plurality of strips is hingedly arranged between the first and second bodies. By applying a voltage between the low-e coatings, that act as electrodes, the strips can be oriented relative to the bodies to change the translucence and/or color of the panel. The use of the low-e coatings allows a simple connection from the outside to the electrodes in the airtight cavity.

A variable thermal insulation assembly includes a plurality of sheets of film, wherein each sheet is bonded to an adjacent sheet along a plurality of longitudinally extending regions to form a plurality of longitudinally extending cavities, wherein the plurality of flexible sheets of each of the thermal cell arrays are formed of an electrically insulative material that is coated on one side with an electrically conductive material, a controller electrically coupled to the plurality of flexible sheets and configured to apply an electric potential difference between electrically conductive material of each pair of flexible sheets such that the electrically conductive coatings of the pair of flexible sheets attract each other to cause the thermal cell array to transition from an expanded state to a compressed state.

A variable thermal insulation assembly includes at least one array comprising a plurality of sheets of film, wherein the plurality of sheets are in a stacked arrangement and each sheet is bonded to an adjacent sheet along a plurality of longitudinally extending regions such that each pair of adjacent sheets form a plurality of longitudinally extending cavities between adjacent regions of the adjacent sheets, a support frame comprising end elements, wherein the support frame frames the plurality of sheets, wherein support frame is coupled to the array to support the array such that the array may transition between an expanded state in which the array is expanded, and a compressed state in which the array is compressed, within the plane of the frame along the direction perpendicular to the longitudinal axis such that the longitudinally extending cavities are expanded or compressed, wherein in the expanded state, the front edge conforms to one of the second end of the support frame or a second front edge of a second array to form a seal that inhibits air flow between the front edge and the one of the second end of the support frame or the second front edge of the second array.

The invention concerns an optomechanical system (10a, 10b) for light regulation and electricity production, comprising a semi-transparent photovoltaic module (23) comprising a plurality of bifacial photovoltaic cells (30) arranged in rows and columns, with gaps (32) between the rows and/or columns, through which sunlight may be transmitted; at least one optical arrangement (40) located in an actuation plane (Pa, Pb) behind the semi-transparent photovoltaic module (23), and comprising at least one reflective optical element for redirecting light towards a back side of the photovoltaic module; and a control system (60) configured to operate the at least one optical arrangement (40) to adjust a projected area of said at least one reflective optical element on said actuation plane (Pa, Pb).