Abstract: A draft protection device for a balance, which encloses a weighing compartment surrounding a weighing pan, has at least one opening that can be closed by a window. The at least one window has at least two slidable window sections which partially overlap each other in any of their positions. According to the invention, a drive mechanism is provided for the opening and closing of the window, which drive mechanism couples the window sections to each other in such a way that all of the window sections move simultaneously and at different speeds during the opening and closing, wherein a fixed ratio between the respective speeds of the window sections can be predetermined by design.

Abstract: A balance (1, 101) has a draft protection device (2) that encloses a weighing compartment surrounding the weighing pan (15). A rear wall (22, 122) delimiting the weighing compartment on one side is made of a material (26) that diffuses the transmitted ambient light. The translucent, light-diffusing material (26) is in particular a frosted glass.

Abstract: A draft protection device for a balance, which encloses a weighing compartment surrounding a weighing pan, has at least one opening that can be closed by a window. The at least one window has at least two slidable window sections which partially overlap each other in any of their positions. According to the invention, a drive mechanism is provided for the opening and closing of the window, which drive mechanism couples the window sections to each other in such a way that all of the window sections move simultaneously and at different speeds during the opening and closing, wherein a fixed ratio between the respective speeds of the window sections can be predetermined by design.

Abstract: A balance (1, 101) has a draft protection device (2) that encloses a weighing compartment surrounding the weighing pan (15). A rear wall (22, 122) delimiting the weighing compartment on one side is made of a material (26) that diffuses the transmitted ambient light. The translucent, light-diffusing material (26) is in particular a frosted glass.

Abstract: Disclosed is a photographic capturing device for the capturing of photographic image information from photographic media with a light source, with a stage for the photographic medium to preset a reference position for the projection of the photographic medium by way of a projection optics onto a detection element which detects the light originating from the light source and modulated by the photographic medium according to the image information, whereby a sample carrier with a sample is provided for the control of the focus of the projected image, and a positioning mechanism which removably places the sample carrier at the reference position for projecting the sample onto the detection element by way of the projection optics.

Abstract: Disclosed is a photographic capturing device for the capturing of photographic image information from photographic media with a light source, with a stage for the photographic medium to preset a reference position for the projection of the photographic medium by way of a projection optics onto a detection element which detects the light originating from the light source and modulated by the photographic medium according to the image information, whereby a sample carrier with a sample is provided for the control of the focus of the projected image, and a positioning mechanism which removably places the sample carrier a the reference position for projecting the sample onto the detection element by way of the projection optics.

Abstract: Photographic capturing device for the capturing of photographic image information from photographic media, with a light integrator which receives light emitted from LED chips with a respectively LED chip specific color, homogenizes the light and emits it from an output opening, in order to illuminate a photographic medium carrying photographic image information, and a detection means for detecting the light modulated by the photographic medium according to the image information, whereby a multitude of LED chips of equal emission color are provided for at least three different colors, which LED chips are mounted on at least one heat conducting substrate and in heat conducting contact therewith.

Abstract: A photographic image acquisition device is disclosed including a light source in the form of an LED chip array having a plurality of LED chips, a photographic medium positioning member for positioning a photographic medium at a predefined position, a projecting lens for projecting the image information on the photographic medium onto a detecting member and for exposing said detecting member, and a light transmitting and averaging member positioned between the LED chip array and the predefined position. The device provides faster image acquisition with a relatively simple mechanical construction.

Abstract: The photographic copying apparatus comprises a first exposure arrangement for exposure of photographic negative and positive copy masters and a second exposure arrangement for exposure of screen copy masters onto photographic copy material. The second exposure arrangement includes a cathode ray tube with control system. The cathode ray tube is arranged at approximately a right angle with respect to the exposure light path of the first exposure arrangement. The second exposure arrangement further comprises a color filter assembly, an objective and a mirror for directing the screen copy master emitted by the cathode ray tube to the photographic copy material. The color filter assembly, the objective and the mirror are combined as a structural unit to constitute an imaging optical system, which can be positioned into the exposure light path instead of an reproduction objective of the first exposure arrangement.