Lighting fixtures having adjustable components configured to accommodate the application of force (e.g., from a moving patient bed) are provided. In one example embodiment, a lighting fixture can include a housing configured to house a light source. The lighting fixture can include a mounting bracket configured to attach with the housing to secure the housing to a surface. The mounting bracket can include a guide mechanism. The guide mechanism can define a guide channel. The housing is attachable to the mounting bracket such that at least a portion of the housing can move relative to the mounting bracket along the guide channel of the guide mechanism when a force is applied to the housing.

Systems and methods for controlling a light emitting diode (LED) system associated with an area and having a plurality of LED arrays are provided. In some implementations, the lighting system can include a first LED array associated with visible light and a second LED array associated with UV light. The lighting system can include one or more first sensors configured to detect occupancy within the area and send signals indicating whether the area is occupied. The lighting system can include one or more second sensors configured to detect microbes within an area and send signals indicating whether microbes are present in the area. The lighting system can include a control circuit configured to receive the signals sent by the one or more first and second sensors and to control the first LED array and the second LED array based on the signals.

An illumination system (1, 100, 200, 300) for providing an optically widened perception comprises a reflector unit (6, 206, 306) comprising a reflective surface (8A) and a luminous layer (10, 210, 310) for homogenously emitting diffuse light at a first color, the luminous layer (10, 210, 310) extending in front of the reflective surface (8A) and comprising a visible front area section (10A, 210A, 310A) of the reflector unit (6, 206, 306), which extends up to a first boundary (12A, 310A) and through which the diffuse light is emitted. The illumination system (1, 100, 200, 300) comprises further a light projector (2, 202, 302) configured to generate a light beam (3, 203, 303) adapted in size for comprehensively illuminating the visible front area section (10A, 210A, 310A) such that at least a portion of the light beam (3, 203, 303) passes through the luminous layer (10, 210, 310) before and after being reflected by the reflective surface (8A), thereby forming an illuminating light beam (3A) at a second color associated with a direct light correlated color temperature, and wherein the first color and the second color are separated in color space. The illumination system (1, 100, 200, 300) is further configured such that a perceivable light emission from a frame-like area next to and surrounding the visible front area (10A, 210A, 310A) section is essentially independent from the light beam (3, 203, 303) of the light projector (2, 202, 302).

Multilayer optical interference filter for filtering light constructed by alternating materials having different refractive indexes, with layer thicknesses calculated in order to achieve a transmittance in accordance with the inverse of the Melatonin Suppression Action Spectrum.

An illumination system (1, 100, 200, 300) for providing an optically widened perception comprises a reflector unit (6, 206, 306) comprising a reflective surface (8A) and a luminous layer (10, 210, 310) for homogenously emitting diffuse light at a first color, the luminous layer (10, 210, 310) extending in front of the reflective surface (8A) and comprising a visible front area section (10A, 210A, 310A) of the reflector unit (6, 206, 306), which extends up to a first boundary (12A, 310A) and through which the diffuse light is emitted. The illumination system (1, 100, 200, 300) comprises further a light projector (2, 202, 302) configured to generate a light beam (3, 203, 303) adapted in size for comprehensively illuminating the visible front area section (10A, 210A, 310A) such that at least a portion of the light beam (3, 203, 303) passes through the luminous layer (10, 210, 310) before and after being reflected by the reflective surface (8A), thereby forming an illuminating light beam (3A) at a second color associated with a direct light correlated color temperature, and wherein the first color and the second color are separated in color space. The illumination system (1, 100, 200, 300) is further configured such that a perceivable light emission from a frame-like area next to and surrounding the visible front area (10A, 210A, 310A) section is essentially independent from the light beam (3, 203, 303) of the light projector (2, 202, 302).

The invention relates to a lighting device (1; 1; 1; 101; 101) with a lamp housing (2; 2; 2; 102; 102) and a lighting unit (3; 3; 3; 103; 103). The lamp housing has a light emission area (7; 7; 7; 107; 107) on a light output side (5; 5; 5; 105; 105) thereof and on a side (11; 11) facing away from the light output side (11; 11; 11; 111; 111) thereof has a curved, dome-shaped rear wall (13; 13; 13; 113; 113). The lighting unit is set up to emit light on the light output side (17; 17; 17; 117; 117) thereof in order to emit the light through the light emission area of the lamp housing. The lighting unit has at least one device (23; 23; 23) on a rear side (19; 19; 19; 119; 119) facing away from the light output side (17; 17; 17; 117; 117); 123; 123) which can be used to attach the lighting unit in a selectable location on the rear wall (13; 13; 13; 113; 113) of the lamp housing using a magnetic force, thereby enabling adjustment of the beam direction (A) of the lighting unit in relation to the lamp housing.