Abstract: A retroreflector includes an arrangement of triples, each having three side surfaces, which are disposed in the manner of a cube corner and stand approximately perpendicular on one another. The retroreflector can be produced from a carrier material by injection molding. An optical silicone resin is used as the carrier material. The retroreflector is based on triple mirrors that are both easily unmolded from a die and easily applied to curved surfaces even after unmolding or are usable for reflection of ultraviolet light.

Abstract: A retroreflective element, for example a retroreflector or a retroreflective film, includes a regular arrangement of multiple reflective triples, each having three side surfaces that form an angle between 88° and 92°, preferably between 89° 50? and 90° 10? relative to one another, and particularly preferably stand perpendicularly on one another. At least one selected triple in the arrangement has a security element having at least one diffractive structure on at least one first side surface. A modulation depth of the security element is selected in such a manner that the security element cannot be perceived when the retroreflective element is illuminated at an illumination angle <10°.

Abstract: A retroreflector includes an arrangement of triples, each having three side surfaces, which are disposed in the manner of a cube corner and stand approximately perpendicular on one another. The retroreflector can be produced from a carrier material by injection molding. An optical silicone resin is used as the carrier material. The retroreflector is based on triple mirrors that are both easily unmolded from a die and easily applied to curved surfaces even after unmolding or are usable for reflection of ultraviolet light.

Abstract: A retroreflector element is divided into multiple reflection regions. The triples of a first reflection region are designed for the purpose of reflecting incident light beams parallel to the preferred direction, at a narrow angle distribution. The side surfaces of the triples of the first reflection region preferably stand precisely perpendicular on one another. The second reflection region is designed to reflect another part of the incident light falling onto the retroreflection element, independent of the preferred direction, at an observation angle between 0° and 2°. The second reflection region ensures that the retroreflection element remains visible at an observation angle up to at least 2°, even perpendicular to the preferred direction.

Abstract: A retroreflector includes a regular arrangement of multiple reflective triples of the first type, each having three side surfaces of the first type, which triples stand approximately perpendicular to one another, in pairs, and define a cube corner having an apex, at which the planes spanned by the three side surfaces of the first type intersect. A number of selected triples of the first type each have a recess, in particular a cube-shaped recess in the surface of the related cube corner and/or an elevation, in particular a cube-shaped elevation projecting from the surface of the related cube corner, which forms a triple of the second type, wherein the triples of the second type each have at least three side surfaces of the second type, which stand approximately perpendicular to one another, in pairs.

Abstract: A retroreflector includes a regular arrangement of multiple reflective triples of the first type, each having three side surfaces of the first type, which triples stand approximately perpendicular to one another, in pairs, and define a cube corner having an apex, at which the planes spanned by the three side surfaces of the first type intersect. A number of selected triples of the first type each have a recess, in particular a cube-shaped recess in the surface of the related cube corner and/or an elevation, in particular a cube-shaped elevation projecting from the surface of the related cube corner, which forms a triple of the second type, wherein the triples of the second type each have at least three side surfaces of the second type, which stand approximately perpendicular to one another, in pairs.

Abstract: A retroreflector includes an arrangement of triples, each having three side surfaces, which are disposed in the manner of a cube corner and stand approximately perpendicular on one another. The retroreflector can be produced from a carrier material by injection molding. An optical silicone resin is used as the carrier material. The retroreflector is based on triple mirrors that are both easily unmolded from a die and easily applied to curved surfaces even after unmolding or are usable for reflection of ultraviolet light.

Abstract: A retroreflector element is divided into multiple reflection regions. The triples of a first reflection region are designed for the purpose of reflecting incident light beams parallel to the preferred direction, at a narrow angle distribution. The side surfaces of the triples of the first reflection region preferably stand precisely perpendicular on one another. The second reflection region is designed to reflect another part of the incident light falling onto the retroreflection element, independent of the preferred direction, at an observation angle between 0° and 2°. The second reflection region ensures that the retroreflection element remains visible at an observation angle up to at least 2°, even perpendicular to the preferred direction.

Abstract: The invention relates to a triple prism which reflects light, a reflector and to a method for recognizing an object. A reflective photoelectric barrier sends light to a reflector. The reflector does not answer with the form of the obtained light signal, but with a double signal which projects two light centers. The reflector can also be embodied such that it answers with a different geometric figure than the light projection. The reflector with a modified signal enables a sensor system to be produced and which can verify, by evaluating the light signal captured by the reflector, whether the captured signal of the reflector or another reflection.

Abstract: The invention relates to a triple prism which reflects light, a reflector and to a method for recognizing an object. A reflective photoelectric barrier sends light to a reflector. The reflector does not answer with the form of the obtained light signal, but with a double signal which projects two light centers. The reflector can also be embodied such that it answers with a different geometric figure than the light projection. The reflector with a modified signal enables a sensor system to be produced and which can verify, by evaluating the light signal captured by the reflector, whether the captured signal of the reflector or another reflection.

Abstract: A reflector having a lenticular light entry surface produces a reflective signal in the shape of a trapezoid. It thereby allows a method for precision scanning of objects, particles, or gases, having a particularly slight diameter of the transmitter beam and a changeable distance of up to close to 0 mm between the reflector and the transmitter/receiver.

Abstract: A wide angle reflector which can work in conjunction with a wide-angle sensor system for testing the wide angle reflector. In this case, reflex sensors transmit light onto a cube corner part surface, and measure the retro-reflected light. If the direction of irradiation of the light deviates too strongly from the normal to the cube corner part surface, the retro-reflective light, which serves as signal, is retro-reflected too weakly, or is not retro-reflected at all to the transmitter. This wide-angle sensor system with a cube corner part surface permits the observation of a large surface with an aperture angle of 80° and more. In addition, the wide-angle sensor system with cube corner part surface comprises a gauge for selecting the observation angle and the cube corner part surface which comprises a multiplicity of cube corners.

Abstract: A wide angle reflector which can work in conjunction with a wide-angle sensor system for testing the wide angle reflector. In this case, reflex sensors transmit light onto a cube corner part surface, and measure the retro-reflected light. If the direction of irradiation of the light deviates too strongly from the normal to the cube corner part surface, the retro-reflective light, which serves as signal, is retro-reflected too weakly, or is not retro-reflected at all to the transmitter. This wide-angle sensor system with a cube corner part surface permits the observation of a large surface with an aperture angle of 80° and more. In addition, the wide-angle sensor system with cube corner part surface comprises a gauge for selecting the observation angle and the cube corner part surface which comprises a multiplicity of cube corners.

Abstract: A wide angle reflector which can work in conjunction with a wide-angle sensor system for testing the wide angle reflector. In this case, reflex sensors transmit light onto a cube corner part surface, and measure the retro-reflected light. If the direction of irradiation of the light deviates too strongly from the normal to the cube corner part surface, the retro-reflective light, which serves as signal, is retro-reflected too weakly, or is not retro-reflected at all to the transmitter. This wide-angle sensor system with a cube corner part surface permits the observation of a large surface with an aperture angle of 80° and more. In addition, the wide-angle sensor system with cube corner part surface comprises a gauge for selecting the observation angle and the cube corner part surface which comprises a multiplicity of cube corners.

Abstract: A wide angle reflector which can work in conjunction with a wide-angle sensor system for testing the wide angle reflector. In this case, reflex sensors transmit light onto a cube corner part surface, and measure the retro-reflected light. If the direction of irradiation of the light deviates too strongly from the normal to the cube corner part surface, the retro-reflective light, which serves as signal, is retro-reflected too weakly, or is not retro-reflected at all to the transmitter. This wide-angle sensor system with a cube corner part surface permits the observation of a large surface with an aperture angle of 80° and more. In addition, the wide-angle sensor system with cube corner part surface comprises a gauge for selecting the observation angle and the cube corner part surface which comprises a multiplicity of cube corners.

Abstract: A wide angle reflector which can work in conjunction with a wide-angle sensor system for testing the wide angle reflector. In this case, reflex sensors transmit light onto a cube corner part surface, and measure the retro-reflected light. If the direction of irradiation of the light deviates too strongly from the normal to the cube corner part surface, the retro-reflective light, which serves as signal, is retro-reflected too weakly, or is not retro-reflected at all to the transmitter. This wide-angle sensor system with a cube corner part surface permits the observation of a large surface with an aperture angle of 80° and more. In addition, the wide-angle sensor system with cube corner part surface comprises a gauge for selecting the observation angle and the cube corner part surface which comprises a multiplicity of cube corners.

Abstract: A reflective mirror structure comprised of a multiplicity of microprisms whose smallest edge length is less than 2.1 mm, each microprism comprising three mirror facets, a first and second one of the mirror facets as well as a third one and the second mirror facet extending at right angles to each other, while the first and third mirror facets enclose an angle of greater than 90° with each other, and a base facet of the microprisms projected onto a plane forming an irregular hexagon.

Abstract: The invention relates to a sensor system based on the retroreflection of a laser beam comprising a retroreflection surface having a series of microtriplet reflectors. The sensor system has individual micro reflector elements that are formed by the three adjacent square surfaces of a cube corner. The individual micro reflector elements have a cross sectional area similar to an equilateral hexagon having a width over flats of 0.002 to 1.4 mm. With this design, the laser beam simultaneously contacts at least five microtriplets on the surface of the retroreflector.

Abstract: A method is disclosed for absorbing bases, acids, alcohols and radioactive liquids using phenol resin foamed plastic particles. The size of the particles should lie between about 0.3 and 3 mm. The particles are initially closed-celled, but have been powdered or fine flaked. They may be treated with an acid for absorbing a base, or with a base for absorbing an acid. A preferred use is in the form of packing material. The particles may be disposed in the form of powder or flakes in liquid-permeable padding. The padding may be composed of a plastic web, in particular a nylon web, or of a non-woven fabric. As packing material the phenol resin foamed plastic may be in the form of sheets, blocks, cubes, tablets, balls or fragments.

Abstract: A reflector plate including a transparent or at least translucent synthetic plastic body with a back surface having a multiplicity of evenly distributed, integral, optically precisely formed triangular pyramids or like prisms as reflecting element formations and covered with a reflective metallic layer, for example, silver, aluminum, copper, chromium or nickel, has front surface differentiation for symbols such as letters or numbers provided by impressing to indent or raise surface portions, or material application. An auto license plate, not alterable without ready detection, is a particularly advantageous disclosed use. A method of fabrication including injection molding, casting molding, or hot or cold forming of a plastic body with the back-reflecting prism formations with steps for applying or incorporating the symbols, and certain apparatus therefor are outlined.