Abstract: The invention provides a lighting system (100) comprising a first light source (10), a second light source (20), and a control system (30), wherein: —the first light source (10) is configured to generate first light source light (11) with a controllable first radiant flux, wherein the first radiant flux is dimmable over a first dimming range; wherein the first light source light (11) has a first angular distribution relative to the lighting system (100); —the second light source (20) is configured to generate second light source light (21) with a controllable second radiant flux, wherein the second radiant flux is dimmable over a second dimming range; wherein the second light source light (21) has a second angular distribution relative to the lighting system (100), different from the first angular distribution; —the control system (30) is configured to control the first light source (10) and the second light source (20), wherein, in a controlling mode of the control system (30), the control system (30) is con

Abstract: The invention provides a lighting system (100) comprising a first light source (10), a second light source (20), and a control system (30), wherein: —the first light source (10) is configured to generate first light source light (11) with a controllable first radiant flux, wherein the first radiant flux is dimmable over a first dimming range; wherein the first light source light (11) has a first angular distribution relative to the lighting system (100); —the second light source (20) is configured to generate second light source light (21) with a controllable second radiant flux, wherein the second radiant flux is dimmable over a second dimming range; wherein the second light source light (21) has a second angular distribution relative to the lighting system (100), different from the first angular distribution; —the control system (30) is configured to control the first light source (10) and the second light source (20), wherein, in a controlling mode of the control system (30), the control system (30) is con

Abstract: A lighting device comprising a first light source issuing a first beam and a second light source issuing a second beam. Said first and said second light source are dimmable and together issue light with a total light flux. At a mutually equal light flux of the first and the second beam, the glare level of the second beam is lower than the glare level of the first beam. The lighting device further comprises at least one (programmed) controller which, during operation, moderates said dim levels such that in at least a range of the illumination level a ratio of the dim level of the second beam to the dim level of the first beam increases in a gradual manner with increasing total light flux.

Abstract: The invention provides a method for controlled lighting of an area (2) with a lighting system (1). The method comprises providing with the lighting system (1), according to a predetermined time program, general lighting (11) during a predetermined general lighting period and colored lighting (21) during a predetermined first colored lighting period. The time program runs for at least 6 hours. Further, in the method a control unit (30) is applied, configured to control the lighting system (1) according to the predetermined time program.

Abstract: A lighting device comprising a first light source issuing a first beam and a second light source issuing a second beam. Said first and said second light source are dimmable and together issue light with a total light flux. At a mutually equal light flux of the first and the second beam, the glare level of the second beam is lower than the glare level of the first beam. The lighting device further comprises at least one (programmed) controller which, during operation, moderates said dim levels such that in at least a range of the illumination level a ratio of the dim level of the second beam to the dim level of the first beam increases in a gradual manner with increasing total light flux.

Abstract: The invention provides a method for controlled lighting of an area (2) with a lighting system (1). The method comprises providing with the lighting system (1), according to a predetermined time program, general lighting (11) during a predetermined general lighting period and colored lighting (21) during a predetermined first colored lighting period. The time program runs for at least 6 hours. Further, in the method a control unit (30) is applied, configured to control the lighting system (1) according to the predetermined time program.

Abstract: A low-pressure mercury vapor discharge lamp (1) has a discharge vessel (3) enclosing, in a gastight manner, a discharge space provided with a filling of mercury and a rare gas. The discharge vessel (3) comprises means for maintaining an electric discharge in the discharge space. A portion of the surface (15) of the discharge vessel (3) facing the discharge space is provided with a protective layer (16) comprising yttrium oxide or aluminum oxide and further comprises a borate and/or a phosphate of an alkaline earth metal and/or of scandium, yttrium, or a further rare earth metal. Preferably, the alkaline earth metal is calcium, strontium, and/or barium. Preferably, the further rare earth metal is lanthanum, cerium, and/or gadolinium. The lamp according to the invention has a comparatively low mercury consumption.

Abstract: Low-pressure mercury vapor discharge lamp has an at least partly substantially cylindrical discharge vessel (10) with a length Ldv and with an internal diameter Din. The discharge vessel (10) encloses, in a gastight manner, a discharge space (13) provided with a inert gas mixture and with mercury. The discharge vessel (10) comprises discharge means (electrodes 20a; 20b) for maintaining a discharge in the discharge space (13). According to the invention, the ratio of the weight of mercury mHg in the discharge vessel (10) to the product of the internal diameterDin and the length of the discharge vessel Ldv is given by the relation: wherein C (0.01 (g/mm2. Preferably, 0.0005 (C(0.005(g/mm2. Preferably, the discharge vessel (10) contains less than 0.1 mg mercury. The discharge lamp according to the invention operates under unsaturated mercury conditions.