| Patent application number | Description | Published |
|---|
| 20080212025 | OPTICAL OBSERVATION INSTRUMENT AND A METHOD OF CONTROLLABLY ADJUSTING A REFRACTIVE POWER IN SUCH INSTRUMENT - An optical observation instrument, in particular a spectacle, a reading aid or a telescope, comprises an optical element, in particular a spectacle lens, adapted to be controllably adjustable in its refractive power, a sensor, and a control unit for adjusting the refractive power as a function of signals from the sensor. The sensor is a brightness sensor. In a method of controllably adjusting a refractive power of an optical element in an optical observation instrument an optical parameter is captured by means of a sensor and the refractive power is adjusted as a function of a signal from the sensor. By means of the sensor the brightness of the light impinging on the optical instrument is captured. | 09-04-2008 |
| 20090015787 | APPARATUS AND METHOD FOR DETERMINING AN EYEGLASS PRESCRIPTION FOR A VISION DEFECT OF AN EYE - The disclosure relates to a method for determining an eyeglass prescription for a vision defect of an eye. In certain embodiments, the method includes optimizing a caustic in the area of the retina of the eye for a light ray passing through the eyeglass prescription and the eye. The disclosure further relates to an apparatus that is suitable for carrying out the method. | 01-15-2009 |
| 20100030570 | SYSTEMS AND METHODS FOR ORDERING LENSES - Methods for dispensing eyeglasses are disclosed. The methods involve making a subjective refraction and an objective refraction and sending the information to a calculation computer to combine both refractions to calculate the person's prescription. The person's prescription is subsequently sent to a manufacturing location separate from the calculation computer for manufacture of the lenses. | 02-04-2010 |
| 20100182566 | Method and arrangement for determining the individually required addition of a vision aid - The invention is directed to a method for determining the individually required addition (Add) of a vision assist for an eye, the method having the following steps:
| 07-22-2010 |
| 20110205487 | METHOD AND APPARATUS FOR CHECKING THE CENTERING OF SPECTACLES WORN BY A SPECTACLE WEARER - A method and an apparatus serve for checking the centering of spectacles worn by a spectacle wearer. The method comprises the steps of: a) measuring spectacle lenses mounted in a frame of the spectacles, wherein a position of permanent markings on the spectacle lenses is acquired relative to a coordinate system defined by the frame by means of an image recognition system; b) determining positions of nominal centering points, prescribed in a file, of the spectacle lenses in dependence on data of the spectacle lenses containing the position of the permanent markings; c) measuring physiological data of a spectacle wearer wearing the spectacles and determining positions of actual centering points of the spectacle lenses from the physiological data by means of a video centering instrument; d) determining the difference between the positions of the nominal centering points and the actual centering points; and e) comparing the difference to a prescribed difference threshold. | 08-25-2011 |
