Abstract: A process for producing an optical glass with an anti-fog coating is disclosed. The process includes the steps of: a) providing an optical glass, b) preparing a layer having Si—H groups (silane groups) on the optical glass, and c) reacting the silane groups with a compound having hydrophilic groups and at least one group reactive to the silane group.

Abstract: The invention is directed to a method for making a spectacle lens for a non-presbyopic person wherein the spectacle lens is a ready-to-wear lens and has at least one zone having an optical effect to reduce vision stress. In the method, at least one of the following is provided: the contour of the ready-to-wear spectacle lens and one or several visual points whereat the person looks through the ready-to-wear spectacle lens for one or several visual tasks in the near range. This method step is followed by setting at least one of: a design reference point of the zone, the extent of the zone, the optical effect within the zone based on the provided contour, and the visual points. The spectacle lens is then made with this zone.

Abstract: A system determines the subjective refraction properties of an eye of a test subject perceiving a natural image. The system contains a memory in which at least one natural image is stored; a display device for displaying the at least one natural image from the memory; and a lens arrangement for adjusting various light-refracting elements in an optical path between the eye of the test subject and the display device. The lens arrangement is arranged at a predefined distance from the display device. A corresponding method and the use of a natural image for refraction determination are also disclosed.

Abstract: Spectacles include a spectacles lens having a carrier lens with a carrier lens front surface and/or a carrier lens rear surface, and having a front surface lens segment arranged on the carrier lens front surface and/or a rear surface lens segment arranged on the carrier lens rear surface, which are moveably guided on the carrier lens front surface and/or the rear surface lens segment, respectively. Further, the spectacles include a front/rear surface lens segment drive for moving the front/rear surface lens segment on the carrier lens front/rear surface, respectively; an eye position detection device for detecting the position of an eye of a wearer wearing the spectacles; and a drive control device for controlling the front and/or rear surface lens segment drive in accordance with the position of the eye detected by the eye position detection device.

Abstract: Mobile computer devices and systems for refraction determination of an eye, for example for objective refraction determination and/or subjective refraction determination, are provided. Here, a display of the mobile computer device can be driven to display an image for refraction determination.

Abstract: An optical visual aid is disclosed that assists an observer looking at an object through at least one spectacle lens. The optical visual aid has a dioptric power matched to an eye of the observer for at least one viewing direction. The dioptric power is composed of a plurality of dioptric power components. A first dioptric power component of the plurality of dioptric power components has a best possible corrective power for the eye of the observer at a defined distance of the object from the corneal vertex of the eye for the viewing direction. At the same time, a further dioptric power component of the plurality of dioptric power components has an additional astigmatic, partly corrective power for the viewing direction for the eye of the observer at the defined distance.

Abstract: An apparatus is for ascertaining and outputting a type of spectacle lens suitable for a spectacle wearer with a visual characteristics providing device, for providing visual characteristics of the spectacle wearer, a needs providing device, for providing individual needs of the spectacle wearer, a spectacle lens type providing device, for providing a plurality of types of spectacle lenses having predetermined characteristics, a desired characteristics ascertaining device, for ascertaining desired characteristics of a type of spectacle lens using the provided visual characteristics and the provided individual needs of the spectacle wearer, an assigning device, for assigning at least one type of spectacle lens from among the plurality of types of spectacle lenses to the desired characteristics, on the basis of predetermined assignment rules, and a spectacle lens type outputting device, for outputting the at least one assigned type of spectacle lens.

Abstract: A system for stereoscopic visualization of image information includes a display device defining a display area for displaying a left and a right partial image. The display device displays the left partial image to a left eye of an observer focused on the display area in a first viewing direction using a left observation beam path and the right partial image to the right eye in a second viewing direction using a right observation beam path. The system includes a vision assist through which the left and right observation beam paths pass. The vision assist sets a beam course for the left and right viewing observation beam paths wherein, starting from the left and right eyes in a direction toward the display area, a perpendicular distance between the left and right observation beam paths decreases to a minimum at a finite distance from the display surface.

Abstract: A method of optimizing an optical system defined by at least one parameter, wherein the method includes steps of: a) determining, based on a first image without distortion, a second image with distortion introduced by the optical system, b) simulating human attention on the first image and the second image by using a computational model of visual attention, to obtain a simulated human attention on the both images, c) evaluating an attentional performance of the optical system based on the simulated human attention on both images, d) adjusting the at least one parameter of the optical system to improve the attentional performance.

Abstract: An apparatus is for ascertaining and outputting a type of spectacle lens suitable for a spectacle wearer with a visual characteristics providing device, for providing visual characteristics of the spectacle wearer, a needs providing device, for providing individual needs of the spectacle wearer, a spectacle lens type providing device, for providing a plurality of types of spectacle lenses having predetermined characteristics, a desired characteristics ascertaining device, for ascertaining desired characteristics of a type of spectacle lens using the provided visual characteristics and the provided individual needs of the spectacle wearer, an assigning device, for assigning at least one type of spectacle lens from among the plurality of types of spectacle lenses to the desired characteristics, on the basis of predetermined assignment rules, and a spectacle lens type outputting device, for outputting the at least one assigned type of spectacle lens.

Abstract: A spectacle lens is disclosed that includes a lens substrate and a coating that is applied onto the lens substrate. The coating has a first reflectivity of at least 20% for near infrared light at a first wavelength ?NIR, which impinges on the coating at an angle of incidence of 0°, and a second reflectivity for near infrared light at the first wavelength ?NIR, which impinges on the coating at an angle of incidence of 35°, the second reflectivity being reduced by at least 10% in relation to the first reflectivity. The present disclosure further relates to a computer-implemented or experimental method for designing such a spectacle lens and a corresponding method for producing a spectacle lens.

Abstract: Spectacles include a spectacles lens having a carrier lens with a carrier lens front surface and/or a carrier lens rear surface, and having a front surface lens segment arranged on the carrier lens front surface and/or a rear surface lens segment arranged on the carrier lens rear surface, which are moveably guided on the carrier lens front surface and/or the rear surface lens segment, respectively. Further, the spectacles include a front/rear surface lens segment drive for moving the front/rear surface lens segment on the carrier lens front/rear surface, respectively; an eye position detection device for detecting the position of an eye of a wearer wearing the spectacles; and a drive control device for controlling the front and/or rear surface lens segment drive in accordance with the position of the eye detected by the eye position detection device.

Abstract: The invention is directed to a spectacle lens and includes a body which is transparent or at least partly transparent to light and has a phase object which guides the light incident at an angle of incidence ? on a side facing away from an observer into a direction depending on the wavelength ? of the light and the angle of incidence ? thereof. The phase object has a multiplicity of diffraction structures, which diffract monochromatic light at a wavelength of 380 nm???800 nm with a diffraction efficiency of ??70% into one and same order of diffraction |m|?1 when the monochromatic light is incident at an angle of incidence ? on the side of the lens facing away from the observer which lies within a diffraction-structure-specific angle interval 15° wide and dependent on the wavelength of the light.

Abstract: A device and a method for establishing a target design are disclosed. A generator generates a graphical representation of a starting target design and displays it on a display. A user directly manipulates a graphical representation of the starting target design displayed on the display through the graphical user interface. The graphical representation of the manipulated starting target design is updated and displayed on the display.

Abstract: A spectacle lens having a front surface intended to be fitted away from the eye. The spectacle lens includes a substrate made from mineral glass or an organic material. The spectacle lens has selective light wavelength filter properties. The selective light wavelength filter properties include a spectral transmittance between 80% and 95% for all wavelengths in a wavelength range between 428 nm and 452 nm for a light ray entering the spectacle lens on the front surface at an angle of incidence of 0°, a spectral transmittance between 95% and 100% for all wavelengths in a wavelength range between 500 nm and 700 nm for a light ray entering the spectacle lens on the front surface with an angle of incidence of 0° and a yellowness index of no more than 10 for a standard illuminant D65 and a standard observer function of 2° (D65/2°).

Abstract: The invention is directed to a method allowing the exact determination of the far visual point on spectacle lenses in a spectacle frame for a subject while taking into account the habitual head position or body posture. The method renders it possible to specify the coordinates of the far visual point on spectacle lenses in a coordinate system that is fixed in relation to the spectacle frame coordinate system. The invention also relates to a system carrying out the method.

Abstract: Mobile computer devices and systems for refraction determination of an eye, for example for objective refraction determination and/or subjective refraction determination, are provided. Here, a display of the mobile computer device can be driven to display an image for refraction determination. The mobile computer device includes a display, a processor and a non-transitory computer-readable medium having a program code stored therein. The program code is configured to cause the processor to drive only the display to display an image thereon for determining refraction of the eye.