Abstract: The invention provides a privacy window system (1) comprising a window panel (100), a lighting unit (200), and a control unit (300), wherein (i) the window panel (100) comprises a first surface (110), a second surface (120) and an edge (130), wherein the window panel (100) is transmissive for visible light wherein at least one of the surfaces (110,120) of the window panel (100) comprises surface structures (105), configured to generate visible privacy light (101) under irradiation with lighting unit radiation (201); (ii) instead of using edge-lighting for the irradiation of the window panel (100), the lighting unit (200) is configured to irradiate one of the surfaces (110,120) of the window panel (100) with said lighting unit radiation (201) thereby inducing said privacy light (101) and reducing visibility through the window panel (100) in at least one direction; and (iii) the control unit (300) is configured to control the lighting unit radiation (201) as function of an input signal.

Abstract: A window lighting system may include a frame (1071, 1171, 1271, 1471) defining a perimeter of a window (1070, 1170, 1270, 1470). The frame may have a hollow interior. A driver (30), which may be located within the hollow interior or external to the window lighting system, may be configured to drive one or more light sources (1076, 1176, 1276, 1486). A lens (46) may be disposed along the hollow interior to focus light emitted by the one or more light sources across a surface of the window or into an interior of a building.

Abstract: A window lighting system may include a frame (1071, 1171, 1271, 1471) defining a perimeter of a window (1070, 1170, 1270, 1470). The frame may have a hollow interior. A driver (30), which may be located within the hollow interior or external to the window lighting system, may be configured to drive one or more light sources (1076, 1176, 1276, 1486). A lens (46) may be disposed along the hollow interior to focus light emitted by the one or more light sources across a surface of the window or into an interior of a building.

Abstract: A curtain wall having integrated lighting, comprises a first series of transoms (14), a second series of mullions (12), at least one of the first transoms and the second mullions having an extruded first member (20) having a hollow interior, a driver (30) positioned within the hollow portion of the first member, a second member (22) connected to the first member, the second member having a lens (46) disposed along an outer side of the second member to illuminate one of an outer façade of a building or an area adjacent said façade.

Abstract: A curtain wall having integrated lighting, comprises a first series of transoms (14), a second series of mullions (12), at least one of the first transoms and the second mullions having an extruded first member (20) having a hollow interior,a driver (30) positioned within the hollow portion of the first member, a second member (22) connected to the first member, the second member having a lens (46) disposed along an outer side of the second member to illuminate one of an outer façade of a building or an area adjacent said façade.