摘要:
A method for selecting base-curves for an ophthalmic lens according to given prescription data comprising the steps of: providing a base-curve series consisting of a plurality of base-curves; calculating a target lens according to the prescription data; calculating the base-curves calculated lenses according to the prescription data; selecting, for at least an optical parameter and/or a geometrical parameter, a threshold value for the difference between the base-curves calculated lenses values and the target lens value of said parameter(s); determining the list of the base-curves of the base-curve series where said difference for said parameter(s) is less or equal to the selected threshold value(s).
摘要:
A method for calculating or optimizing an ophthalmic lens design comprising the steps of providing a given ophthalmic lens design and assessing the given design by a computer comprising a media suitable for storing electronic instructions.
摘要:
A method of selecting a semi-finished ophthalmic lens according to a given spectacle frame comprising the steps of: providing the spectacle frame front face base data providing a list of semi-finished ophthalmic lenses with a plurality of front face bases, and selecting from the list of semi-finished ophthalmic lenses the semi-finished ophthalmic lens whose front base is the closest from the front base of the spectacle frame.
摘要:
A method of selecting a semi-finished ophthalmic lens according to a given spectacle frame comprising the steps of: providing the spectacle frame front face base data providing a list of semi-finished ophthalmic lenses with a plurality of front face bases, and selecting from the list of semi-finished ophthalmic lenses the semi-finished ophthalmic lens whose front base is the closest from the front base of the spectacle frame.
摘要:
A method implemented by computer means of assessing at least a selected optical feature of an ophthalmic lens design over a prescription and optionally design particularity domain comprising the steps of: a) selecting a prescription and optionally design particularity parameter set comprising a plurality of prescription parameters in the list consisting of spherical power (SPH), cylindrical power (CYL), cylinder axis (AXE), addition power (ADD) and selecting a prescription and optionally design particularity range for each selected prescription and optionally design particularity parameter so as to define the prescription and optionally design particularity domain; b) meshing the prescription and optionally design particularity domain so as to provide a plurality of meshing coordinates; c) providing an assessment criterion for the selected optical feature of the ophthalmic lens design; d) calculating the assessment criterion value for each meshing coordinate of step b); e) providing a sensory representation of the assessment criterion values over the prescription and optionally design particularity domain.A method for calculating or optimizing an ophthalmic lens design comprising the use of preceding method.
摘要:
The present invention relates to a method and device for the generation of reconstructions of information encoded on spatial light modulators by way of illumination with coherent incident waves. The invention includes the following steps: Splitting of the incident wave into at least two incident sub-waves, Modulation of the incident sub-waves with the help of selected apodisation functions so to form modulated incident sub-waves, Direction of the modulated incident sub-waves towards the corresponding, spatially separated and pixel-matrix-shifted spatial light modulators, Diffraction of the modulated incident sub-waves at the encoded pixels of the respective spatial light modulators, Additive combination of the sub-waves emitted by the respective spatial light modulators to form one common emitted wave, and Transformation of the emitted wave into the Fourier plane with the help of a projection system.
摘要:
Optical patches are assigned to prescriptions so as to reduce the total number of patch surfaces which are involved. The prescriptions are produced by varying at least one of a front patch surface (S1) and rear patch surface (S2) which are combined to form an optical patch, in accordance with prescription segments. The front patch surfaces (S1) are pseudo-spherical and the rear patch surfaces (S2) include a Fresnel structure superimposed on a pseudo-spherical base shape.
摘要:
A method for selecting base-curves for an ophthalmic lens according to given prescription data comprising the steps of: providing a base-curve series consisting of a plurality of base-curves; calculating a target lens according to the prescription data; calculating the base-curves calculated lenses according to the prescription data; selecting, for at least an optical parameter and/or a geometrical parameter, a threshold value for the difference between the base-curves calculated lenses values and the target lens value of said parameter(s); determining the list of the base-curves of the base-curve series where said difference for said parameter(s) is less or equal to the selected threshold value(s).
摘要:
Optical patches are assigned to prescriptions so as to reduce the total number of patch surfaces which are involved. The prescriptions are produced by varying at least one of a front patch surface (S1) and rear patch surface (S2) which are combined to form an optical patch, in accordance with prescription segments. The front patch surfaces (S1) are pseudo-spherical and the rear patch surfaces (S2) include a Fresnel structure superimposed on a pseudo-spherical base shape.
摘要:
The present invention relates to a method and device for the generation of reconstructions of information encoded on spatial light modulators by way of illumination with coherent incident waves. The invention includes the following steps: Splitting of the incident wave into at least two incident sub-waves, Modulation of the incident sub-waves with the help of selected apodization functions so to form modulated incident sub-waves, Direction of the modulated incident sub-waves towards the corresponding, spatially separated and pixel-matrix-shifted spatial light modulators, Diffraction of the modulated incident sub-waves at the encoded pixels of the respective spatial light modulators, Additive combination of the sub-waves emitted by the respective spatial light modulators to form one common emitted wave, and Transformation of the emitted wave into the Fourier plane with the help of a projection system.