Measuring individual data of spectacles

A method for measuring individual data of spectacles arranged in a stationary measurement position, the spectacles having at least one of a left spectacle lens with a left permanent marking and a right spectacle lens with a right permanent marking, the method comprising:

• capturing an image of a test structure with an image capture device while an imaging beam path passes through at least one of the left spectacle lens and the right spectacle lens of the spectacles arranged in the measurement position,
• capturing a section of the spectacle frame of the spectacles with the image capture device, the section defining a coordinate system of the spectacles,
• providing illumination light which passes through at least one of the left spectacle lens and the right spectacle lens of the spectacles arranged in the measurement position and which is thereafter at least partly reflected back through the at least one of the left spectacle lens and the right spectacle lens,
• capturing the left and right permanent markings respectively defining the local, body-inherent coordinate system for the at least one of the left spectacle lens and the right spectacle lens with the image capture device,
• determining the coordinate system of the spectacles from the section of the spectacle frame, captured by the image capture device, of the spectacles arranged in the measurement position, determining the respective local, body-inherent coordinate system for at least one of the left spectacle lens and the right spectacle lens from the captured left and right permanent markings of at least one of the left spectacle lens and the right spectacle lens,
• referencing the respective local, body-inherent coordinate system for at least one of the left spectacle lens and the right spectacle lens to the coordinate system of the spectacles;
• and
• determining a refractive power distribution for at least one section of the left spectacle lens in a coordinate system that is referenced to the coordinate system of the spectacles and to the local, body-inherent coordinate system for the left spectacle lens and/or determining a refractive power distribution for at least one section of the right spectacle lens in a coordinate system that is referenced to the coordinate system of the spectacles and to the local, body-inherent coordinate system for the right spectacle lens, from the coordinates of the test structure and the captured image of the test structure,
• wherein the image capture device is configured to capture the test structure with an imaging beam path that passes through at least one of the left spectacle lens and the right spectacle lens of the spectacles arranged in the measurement position;
• and is configured to capture a section of the spectacle frame of the spectacles arranged in the measurement position, the section defining a coordinate system of the spectacles;
• and is configured to capture the left and right permanent markings, respectively, defining a local, body-inherent coordinate system for the at least one of the left spectacle lens and the right spectacle lens,
• wherein the test structure is displayed on a display,
• wherein the illumination light is provided by an illumination device,
• wherein an adjustable reflector is provided which, in a first setting, reflects the illumination light having passed through the at least one of the left spectacle lens and the right spectacle lens of the spectacles arranged in the measurement position at least partly back through the at least one of the left spectacle lens and the right spectacle lens and which, in a second setting that differs from the first setting, uncovers the imaging beam path for capturing the test structure displayed on the display with the image capture device, and
• wherein a computer unit is provided, the computer unit having a computer program for determining the coordinate system of the spectacles from the section, captured by the image capture device, of the spectacle frame of the spectacles arranged in the measurement position, which, from the captured left and right permanent markings of at least one of the left spectacle lens and the right spectacle lens respectively determines the local, body-inherent coordinate system for the left spectacle lens and right spectacle lens and references this to the coordinate system of the spectacles, and which, from the image of the test structure captured by the image capture device and a known spatial orientation of the display relative to the image capture device, determines at least one of a refractive power distribution for at least a section of the left spectacle lens, the refractive power distribution being determined in a coordinate system that is referenced to the coordinate system of the spectacles and to the local, body-inherent coordinate system for the left spectacle lens, and a refractive power distribution for at least a section of the right spectacle lens, the refractive power distribution being determined in a coordinate system that is referenced to the coordinate system of the spectacles and to the local, body-inherent coordinate system for the right spectacle lens.