Abstract: In order to regulate an illuminance, an actual value of a sensor (3) is queried, said value being dependent on the illuminance to be regulated and being regulated to a setpoint value. In a control step, an electronic computing device (11) determines an actuating step for an illuminant (2) on the basis of said actual value and a parameter value of a control parameter. The electronic computing device (11) determines a new parameter value of the control parameter for a subsequent control step on the basis of a first actual value which is received before the corresponding control step, and a second actual value which is determined after the corresponding control step.

Abstract: In order to regulate an illuminance, an actual value of a sensor (3) is queried, said value being dependent on the illuminance to be regulated and being regulated to a setpoint value. In a control step, an electronic computing device (11) determines an actuating step for an illuminant (2) on the basis of said actual value and a parameter value of a control parameter. The electronic computing device (11) determines a new parameter value of the control parameter for a subsequent control step on the basis of a first actual value which is received before the corresponding control step, and a second actual value which is determined after the corresponding control step.

Abstract: The present invention relates to a method for providing control signals for a light whose color or color temperature is variable. The invention also relates to a corresponding control apparatus and a corresponding lighting system. In the method, a series of at least three color locations (F1, F2, F3) is determined, which lie on a predetermined color change curve (K1) in a corresponding coordinate system. By way of example, the color change curve may be the Planck curve train or a straight line. The color locations (F1, F2, F3) are in this case chosen such that the respectively corresponding colors have a color distance (d) which, at least approximately, is subjectively perceived as in each case being of the same magnitude. This makes it easier to adjust the light to give a specific desired light impression.

Abstract: The present invention relates to a method for providing control signals for a light whose colour or colour temperature is variable. The invention also relates to a corresponding control apparatus and a corresponding lighting system. In the method, a series of at least three colour locations (F1, F2, F3) is determined, which lie on a predetermined colour change curve (K1) in a corresponding coordinate system. By way of example, the colour change curve may be the Planck curve train or a straight line. The colour locations (F1, F2, F3) are in this case chosen such that the respectively corresponding colours have a colour distance (d) which, at least approximately, is subjectively perceived as in each case being of the same magnitude. This makes it easier to adjust the light to give a specific desired light impression.

Abstract: The invention relates to a light comprising a light source or connection means for a light source, and a transparent panel which extends crosswise to a direction of light emission. An object of the invention is to improve the light in terms of glare suppression. To this end, the transparent panel is provided with a microstructure and light homogenization means are provided. The latter ensure that the brightness of the light entering the panel is approximately equal in all parts of the panel.

Abstract: There is proposed a luminaire (10) with which the exit angle of the light beams is restricted for the purpose of anti-dazzling. Further, in accordance with the invention there is attained in a simple manner and in particular without the employment of a light guide element a uniform emission of light over the entire surface of an optical element (14; 14-1, 14-2) arranged before or in the emission opening (13) of the luminaire (10). The optical element (14; 14-1, 14-2) has a plate-like core (16) of transparent material, which is occupied on one side with microprisms (17) which, with the formation of furrows (18)—starting from their roots—taper.

Abstract: An optical element (10, 10′, 10″) for deflecting light beams (18, 19), which enter and re-emerge from the latter, in such a way that their angle of emergence (&ggr;) is limited, in particular for use as a luminaire-cover, having a plate-like core (11, 11′, 11″) of transparent material which on one side is occupied by microprisms (12, 13) that taper—starting from their root (15)—forming furrows (22), wherein all of the top surfaces (14) of the microprisms form the light-entry face and the other side (21) of the core forms the light-emergence face, and wherein the top surfaces (14) of the microprisms are formed convexly or concavely in a continuous or non-continuous manner, and also a method for producing the optical element (10, 10′, 10″).

Abstract: The invention relates to a light comprising a light source or connection means for a light source, and a transparent panel which extends crosswise to a direction of light emission. An object of the invention is to improve the light in terms of glare suppression. To this end, the transparent panel is provided with a microstructure and light homogenization means are provided. The latter ensure that the brightness of the light entering the panel is approximately equal in all parts of the panel.

Abstract: Illumination arrangement (2), profiled bodies (5) of a light permeable material being formed in a base body (4), which profiled bodies are spaced apart from one another by means of recesses (6). To each profiled body there is applied a luminous means (7) which emits light into the corresponding profiled body. The light is directed internally by the profiled body (5) to an emission surface of the base body (4) in such a manner that it emerges there within a maximum emission angle range, to avoid dazzling an observer. As luminous means (7) a flat fluorescent lamp can in particular be employed.

Abstract: An optical element for deflecting light beams is formed form a plate-like core or element 1 of transparent material having tapered microprisms 2 one side, with furrows 7 formed between the microprisms, the furrows being covered with a reflective layer 12, and a foil 11 of transparent material arranged on a side of the reflective layer remote from the core or element 1.

Abstract: There is proposed a luminaire (10) with which the exit angle of the light beams is restricted for the purpose of anti-dazzling. Further, in accordance with the invention there is attained in a simple manner and in particular without the employment of a light guide element a uniform emission of light over the entire surface of an optical element (14; 14-1, 14-2) arranged before or in the emission opening (13) of the luminaire (10). The optical element (14; 14-1, 14-2) has a plate-like core (16) of transparent material, which is occupied on one side with microprisms (17) which, with the formation of furrows (18)—starting from their roots—taper.

Abstract: An optical element (10, 10′, 10″) for deflecting light beams (18, 19), which enter and re-emerge from the latter, in such a way that their angle of emergence (&ggr;) is limited, in particular for use as a luminaire-cover, having a plate-like core (11, 11′, 11″) of transparent material which on one side is occupied by microprisms (12, 13) that taper—starting from their root (15)—forming furrows (22), wherein all of the top surfaces (14) of the microprisms form the light-entry face and the other side (21) of the core forms the light-emergence face, and wherein the top surfaces (14) of the microprisms are formed convexly or concavely in a continuous or non-continuous manner, and also a method for producing the optical element (10, 10′, 10″).

Abstract: Optical element (9) for deflecting light beams, which enter and re-emerge from the latter, in such a way that their angle of emergence is limited, for use as a luminaire-cover for example, having a plate-like core (1) of transparent material which on one side is occupied by microprisms (2) that taper forming furrows (7), with, for example, all of the top surfaces (4) of the microprisms forming the light-entry face and the other side of the core (1) forming the light-emergence face (3), and with the furrows (7) being covered by a layer (12) that is reflective at least on one side, with, furthermore, a foil (11) of transparent material being provided on the side of the reflective layer (12) that is remote from the element core (1), and also methods for producing the optical element (9) and the reflective element (10) that has the reflective layer (12).

Abstract: A screening device (3) for screening exterior light (2) which illuminates a room (1), is controlled such that in the room on the one hand, user comfort with regard to freedom from dazzling and room temperature is optimal and, on the other hand, energy consumption for artificial lighting within the room or for heating and cooling the room is minimized.

Abstract: A lamp cover in particular for fluorescent lamps consists of a light-transmitting material which at least on one surface features a structure which affects the rays of light that penetrate the material. The present lamp cover is to achieve a soft-focus effect, i.e. light-impervious elements located in the ray path should not be recognizable from the outside. In addition, the lamp cover should have a light-directing effect whereby in the polar diagram in terms of inensity the direction of the light beam hitting the structure in essence has the same direction as the light beam exiting the structure whereby the exiting light beam features a ray expansion.