摘要:
The invention relates to a method, a system and a computer program product, in particular for designing or producing a lens having a prismatic effect, and to a lens having a prismatic effect. Said method consists of the following steps: individual data of the spectacle wearer is obtained, said individual user data comprising prismatic prescription data; the prismatic lens is designed taking into account the individual user data; centration data for the prismatic lens is determined in accordance with the prismatic prescription data.
摘要:
A computer-implemented method and a device for optimizing an optical element comprising at least one diffraction grating, wherein at least one refractive surface contributing to the refractive light deflection and/or the at least one diffraction grating of the optical element are/is optimized in such a way as to minimize the color fringe and at least a second-order aberration of the optical element. Also, a corresponding production method and a corresponding device for producing an optical element comprising at least one diffraction grating.
摘要:
The invention relates to a method for computer-assisted evaluation of the performance of progressive lenses, specifically while taking into account individual parameters of a given eyeglass wearer, the individual parameters including at least personal prescription data, in particular, additional spherical, astigmatic, and/or prismatic power, and/or personal wearer data for the eyeglass wearer, in particular, forward inclination, horizontal frame inclination, corneal vertex distance, and/or interpupillary distance. The method includes the following steps: determining the individual parameters; calculating a total performance factor P in each case for at least two quality classes of progressive lenses as a function of the individual parameters, the total performance factor P being correlated with the quality of the monocular visual acuity and/or binocular visual impression; and outputting the calculated total performance factor P for the quality classes.
摘要:
A method is provided for calculating an individual spectacle lens design for a progressive spectacle lens exhibiting an individual vertical position of the distance and/or the near reference points, which can be variably adjusted. A starting design exhibiting a predefined vertical position of the distance and/or the near reference points is determined; the individual spectacle lens design is calculated having the desired, individual vertical position of the distance and/or near reference points. The calculation of the individual spectacle lens design includes calculating the target value Starget(y) for the spatial distribution of at least one optical property of the individual spectacle lens by a mapping Starget(y)=S′targert(y′) and a transform represented by formula (I), the starting design having corresponding target value S′target(y′), where y′ represents the vertical coordinate of the target value of the starting design and y represents the vertical coordinate of the transformed target value.
摘要:
According to the invention, a method for producing a spectacle lens or a pair of spectacle lenses is proposed which comprises a calculation and optimization step for at least one of the surfaces of the spectacle lens taking into account an anisometropia D of the eyes of a spectacles wearer, said calculation and optimization step involving a target function F being minimized: minF=ΣigPi((PR(i)−PL(i))−Psoll(i))2, where: PR(i) is a prismatic effect at the i-th evaluation point of the spectacle lens; PL(i) is a prismatic reference effect at the i-th evaluation point of the spectacle lens; Psoll(i) is a desired value of the difference ΔP in prismatic effect and prismatic reference effect at the i-th evaluation point of the spectacle lens; and gPi is a weighting of the prismatic effect at the i-th evaluation point of the spectacle lens; and where the prismatic reference effect PL(i) is the prismatic effect at a visual point of a second spectacle lens corresponding to the i-th evaluation point, and the spectacle lens and the second spectacle lens form a pair of spectacle lenses for joint use in spectacles for correcting the anisometropia of the spectacles wearer. The invention further relates to a computer program product, a storage medium, a device for carrying out the method, and a pair of spectacle lenses and the use thereof for correcting an anisometropia of a spectacles wearer.
摘要:
A method and apparatus for creating a progressive spectacle lens design by transforming a starting design. The starting design is defined to include specification of a principal line, specifications for target astigmatism values A(u=0,y) along the principal line, and specifications for the course of a base target isoastigmatism line, which is described by a one-dimensional function of the form uG(y)=ƒ(y). The method and apparatus transform the starting design by modifying the course of the base target isoastigmatism line uG(y)→u′G(y), and calculating the target astigmatism values A(u,y) of the spectacle lens design by an interpolation between the target astigmatism values A(u=0,y) on the principal line and the target astigmatism values A(u′G(y),y) on the modified base target isoastigmatism line. Furthermore, the method and apparatus are provided to create the spectacle lens for the wearer on the basis of the progressive spectacle lens design.
摘要:
A method and apparatus for producing a first spectacle lens of a pair of spectacle lenses to be used with a second spectacle lens for a specific situation of wear, in which optical parameters for the spectacle lens are calculated to minimize the value of a target function that corresponds to the pair of spectacle lenses. The target function is the sum of a first monocular function, with a weighting factor, that depends on the values of a first monocular optical property at a plurality of monocular evaluation points, a the binocular function, with a weighting factor, that depends on the values of a second monocular optical property at the plurality of pairs of binocular evaluation points, and a remainder term.
摘要:
An individual spectacle lens design for a progressive spectacle lens exhibiting an individual vertical position of the distance and/or the near reference points, which can be variably adjusted, is calculated. A starting design exhibiting a predefined vertical position of the distance and/or the near reference points is determined; the individual spectacle lens design is calculated having the desired, individual vertical position of the distance and/or near reference points. The calculation of the individual spectacle lens design includes calculating the target value for the spatial distribution of at least one optical property of the individual spectacle lens by a mapping and a transform, where the starting design has a corresponding target value.
摘要:
The invention relates in particular to a computer-implemented method for calculating or optimizing a spectacle lens, comprising the steps of: specifying at least one surface for the spectacle lens to be calculated or optimized; determining the course of a main ray (10) through at least one visual point (i) of the at least one surface; determining a first primary set (sio) and a second primary set (eiok) of coefficients of the local aberration of a local wavefront (18) going out from the at least one visual point (i) in a surrounding of the main ray (10), wherein the first primary set of coefficients (sio) defines the spherical and astigmatic aberration of the outgoing local wavefront and the second primary set of coefficients (eiok) defines at least one further higher-order aberration (k>2) of the outgoing local wavefront; specifying at least one function epk=ƒ(eok) which assigns a second secondary set of coefficients (epk) to a second primary set of coefficients (eok), said second secondary set of coefficients defining the higher-order aberration of a propagated wavefront; determining a higher-order aberration of a local wavefront propagated starting from the at least one visual point (i) along the main ray depending on at least the second primary set of coefficients (eiok) on the basis of the specified function epk=ƒ(eok); and calculating or optimizing the at least one surface of the spectacle lens taking into consideration the determined higher-order aberration of the propagated local wavefront.
摘要:
A method and apparatus for producing a first spectacle lens of a pair of spectacle lenses to be used with a second spectacle lens for a specific situation of wear, in which optical parameters for the spectacle lens are calculated to minimize the value of a target function that corresponds to the pair of spectacle lenses. The target function is the sum of a first monocular function, with a weighting factor, that depends on the values of a first monocular optical property at a plurality of monocular evaluation points, a the binocular function, with a weighting factor, that depends on the values of a second monocular optical property at the plurality of pairs of binocular evaluation points, and a remainder term.