Abstract: In an optical filter for sunglasses, having a transmittance of less than 20% for light wavelengths from 400 nm to 650 nm, the transmission spectrum comprises a local transmission maximum in each of the light wavelength ranges between 440 nm and 470 nm and also between 570 nm and 590 nm and a local transmission maximum in the light wavelength range between 600 nm and 620 nm, wherein the transmittance below the connecting line of the local transmission maximum between 440 nm and 470 nm and the local transmission maximum between 570 nm and 590 nm has an essentially convex overall curve with a breadth of variation less than 8%.

Abstract: A method and a device are described for determining the optical center point of the lenses of spectacles to be manufactured for a spectacle wearer, whose head is imaged from the front using a digital camera (10), wherein the location of the pupils (16) and the interpupillary distance (20, 21) are determined with the aid of an image evaluation program to define the optical center point of the lenses.

Abstract: In an optical filter for sunglasses, having a transmittance of less than 20% for light wavelengths from 400 nm to 650 nm, the transmission spectrum (1, 2, 3) comprises a local transmission maximum (5, 6, 7) or (9, 10, 11), respectively, in each of the light wavelength ranges between 440 nm and 470 nm (4) and also between 570 nm and 590 nm (8) and a local transmission maximum (13, 14) in the light wavelength range between 600 nm and 620 nm (12), wherein the transmittance below the connecting line of the local transmission maximum (5, 6, 7) between 440 nm and 470 nm and the local transmission maximum (9, 10, 11) between 570 nm and 590 nm has an essentially convex overall curve (16) with a breadth of variation less than 8%.

Abstract: The invention relates to a hinge joint (4) for eyeglasses, comprising a hinge tab (5) which engages between two limbs of a joint fork (6), and a hinge axis (7) arranged on a pivot arm (10) between the hinge tab (5) and the joint fork (6), wherein the pivot arm (10) can be pivoted about an inclination axis (9) perpendicular to the hinge axis (7) and can be retained in the respective pivot position by means of a latching toothing (12), the latching toothing interacting with a counter-toothing (13) of the pivot arm (10).

Abstract: The invention relates to a hinge joint (4) for eyeglasses, comprising a hinge tab (5) which engages between two limbs of a joint fork (6), and a hinge axis (7) arranged on a pivot arm (10) between the hinge tab (5) and the joint fork (6), wherein the pivot arm (10) can be pivoted about an inclination axis (9) perpendicular to the hinge axis (7) and can be retained in the respective pivot position by means of a latching toothing (12), the latching toothing interacting with a counter-toothing (13) of the pivot arm (10).

Abstract: An arm (3) for a pair of glasses made of two sections (6, 7) is described, which are connected to one another via a coiled spring (10), which forms an arm joint (8) and is enveloped using an elastomeric plastic envelope (9). In order to achieve an advantageous bending behavior for the arm joint (8), it is proposed that the plastic envelope (9) have a differing wall thickness around the circumference, which determines the bending resistance of the arm joint (8) with respect to at least one predefined bending axis.

Abstract: Spectacles are described having a frame (1), having two spectacle earpieces (5) attached laterally on the frame (1), having two spectacle lenses (2), which engage in receptacle grooves (3) of the frame (1), and having in each case a detachable mounting device for the spectacle lenses (2) in the receptacle grooves (3), which are interrupted in the region of the earpiece attachment (4), wherein the mounting device has, in the region of the interruption (7) of the receptacle groove (3), a sliding bolt (8), which is mounted on the frame outer side and is displaceable transversely to the edge (9) of the spectacle lenses (2). In order to ensure a secure hold of the spectacle lenses (2), it is proposed that the frame (1) have, on the inner side opposite to the sliding bolt (8), a support stop (11) for the spectacle lens (2) having at least one catch attachment (12) engaging in a catch recess of the spectacle lens (2).

Abstract: Glasses are described having a frame (3) and having nose pads (6) provided in the region of frame attachments (7), which have catch positions arranged in succession in an adjustment direction. To allow an advantageous glasses adaptation, it is proposed that the nose pads (6) be provided on the side opposite to their support surface (10) with a plug-in attachment (9) protruding transversely to the support surface (10), which forms at least two catches (11) in succession in the plug-in direction for alternately engaging in a catch recess (8) of the frame attachments (7).

Abstract: Spectacles are described having a frame (1), having two spectacle earpieces (5) attached laterally on the frame (1), having two spectacle lenses (2), which engage in receptacle grooves (3) of the frame (1), and having in each case a detachable mounting device for the spectacle lenses (2) in the receptacle grooves (3), which are interrupted in the region of the earpiece attachment (4), wherein the mounting device has, in the region of the interruption (7) of the receptacle groove (3), a sliding bolt (8), which is mounted on the frame outer side and is displaceable transversely to the edge (9) of the spectacle lenses (2). In order to ensure a secure hold of the spectacle lenses (2), it is proposed that the frame (1) have, on the inner side opposite to the sliding bolt (8), a support stop (11) for the spectacle lens (2) having at least one catch attachment (12) engaging in a catch recess of the spectacle lens (2).

Abstract: Glasses are described having a frame (3) and having nose pads (6) provided in the region of frame attachments (7), which have catch positions arranged in succession in an adjustment direction. To allow an advantageous glasses adaptation, it is proposed that the nose pads (6) be provided on the side opposite to their support surface (10) with a plug-in attachment (9) protruding transversely to the support surface (10), which forms at least two catches (11) in succession in the plug-in direction for alternately engaging in a catch recess (8) of the frame attachments (7).

Abstract: An arm (3) for a pair of glasses made of two sections (6, 7) is described, which are connected to one another via a coiled spring (10), which forms an arm joint (8) and is enveloped using an elastomeric plastic envelope (9). In order to achieve an advantageous bending behavior for the arm joint (8), it is proposed that the plastic envelope (9) have a differing wall thickness around the circumference, which determines the bending resistance of the arm joint (8) with respect to at least one predefined bending axis.

Abstract: An interlocking connection is described between a piece of wire (4) and a molded body (1) injected from plastic, especially for spectacles, with one end of the wire piece (4) being anchored in the molded body (1) by way of two sections of a fixing device which are arranged adjacent to each other. In order to provide simple constructional conditions it is proposed that the piece of wire (4) comprises an end (5) which is bent in a hairpin-like manner and whose legs (6, 7) form a fixing means, and with the end (5) bent in a hairpin-like manner of the piece of wire engaging in an interlocking manner in a plug-in receiving means (8) of the molded body (1), which receiving means is adjusted to the hairpin-like shape of the end of the wire (5) and forms an undercut.

Abstract: An apparatus is described for fastening a constructional element (1) to a spectacle lens (2) with a butt end (8) of a constructional element (1) which overlaps the lens edge, with two parallel fastening pins (4) which project from the butt end (8) and form annular enlargements (5) which are barb-like in their cross section, and with plastic sleeves (6) which can be inserted into bores in the spectacle lens (2) and form a head overlapping the edge of the bore and in which the fastening pins (4) engage in an interlocking way under deformation of the sleeve wall from the side of the bore opposite of the heads.

Abstract: A fastener device for two frameless spectacle lenses (2) comprises a nose support provided between the spectacle lenses (2) and supporting parts (4) provided in the region of the nose support onto which the spectacle lenses (2) are glued. In order to provide advantageous bonding conditions it is proposed that the supporting parts (4) comprise flexurally soft supports (3) made of plastic, onto which the spectacle lenses (2) are glued along a face-side circumferential section.

Abstract: An interlocking connection is described between a piece of wire (4) and a molded body (1) injected from plastic, especially for spectacles, with one end of the wire piece (4) being anchored in the molded body (1) by way of two sections of a fixing device which are arranged adjacent to each other. In order to provide simple constructional conditions it is proposed that the piece of wire (4) comprises an end (5) which is bent in a hairpin-like manner and whose legs (6, 7) form a fixing means, and with the end (5) bent in a hairpin-like manner of the piece of wire engaging in an interlocking manner in a plug-in receiving means (8) of the molded body (1), which receiving means is adjusted to the hairpin-like shape of the end of the wire (5) and forms an undercut.

Abstract: An apparatus is described for fastening a constructional element (1) to a spectacle lens (2) with a butt end (8) of a constructional element (1) which overlaps the lens edge, with two parallel fastening pins (4) which project from the butt end (8) and form annular enlargements (5) which are barb-like in their cross section, and with plastic sleeves (6) which can be inserted into bores in the spectacle lens (2) and form a head overlapping the edge of the bore and in which the fastening pins (4) engage in an interlocking way under deformation of the sleeve wall from the side of the bore opposite of the heads.

Abstract: A spectacle frame comprises frame parts which are made of chrome nickel steel and produced by cold-forming. In order to provide advantageous constructional conditions, it is proposed that the frame parts consist of a chrome nickel steel with a minimum strength 950 MPa.

Abstract: A spectacle frame comprises frame parts which are made of chrome nickel steel and produced by cold-forming. In order to provide advantageous constructional conditions, it is proposed that the frame parts consist of a chrome nickel steel with a minimum strength of 950 MPa.