Methods and apparatus for measuring and mapping opthalmic elements
AssigneeVisionix Ltd.
InventorsMordechai Abitbol, Emile Tederry, Eli Meimoun
Life of this patent
Estimating the term…
Abstract
This invention discloses an apparatus for providing optical information regarding spectacles in which are mounted first and second lenses, the apparatus includes a spectacles mapper operative to compute a map, within a single coordinate system, of at least one optical characteristic over both of the two lenses, and a spectacles analyzer operative to provide an output indication of optical information related to the map. A method for providing optical information regarding spectacles is also disclosed.
Claims28
A method for providing optical information regarding spectacles in which are mounted first and second lenses, the method comprising:
- computing a map, within a single coordinate system, of at least one optical characteristic over both of said two lenses;
- and
- providing an output indication of optical information related to said map.
Apparatus for providing optical information regarding spectacles in which are mounted first and second lenses, the apparatus comprising:
- a spectacles mapper operative to compute a map, within a single coordinate system, of at least one optical characteristic over both of said two lenses;
- and
- a spectacles analyzer operative to provide an output indication of optical information related to said map.
A lens marking device comprising:
- a lens marker operative to mark at least one location on a lens and initially occupying a particular position relative to a lens to be marked;
- and
- a lens orientation device operative, at least once, to automatically change the position of the lens marker relative to the lens, thereby to allow the lens marker to mark at least one specific location from among said at least one location.
Apparatus for measuring an optical characteristic of a location within a lens, the optical characteristic being a multiparametric function of at least a portion of a vicinity of the location, the apparatus comprising:
- a vicinity analyzer operative to generate lens location vicinity characterizing information by simultaneously analyzing more than four light rays impinging upon more than four corresponding locations within said vicinity,
- said vicinity analyzer comprising:
- a negative lens operative to diverge said light rays impinging upon said more than four locations, said negative lens introducing aberrations;
- an imager operative to generate an image of said diverged light rays impinging upon said lens;
- an image analyzer operative to generate said vicinity characterizing information while compensating for the aberrations by performing negative ray tracing;
- and
- an optical characteristic computation unit operative to compute said optical characteristic of said location within the progressive lens based on said lens location vicinity characterizing information.
Apparatus for inspecting ophthalmic lenses comprising:
- a first removable LEUT holder including a first Hartmann plate having a smaller number of holes and a negative lens;
- a second removable LEUT holder including a second Hartmann plate having a larger number of holes;
- and
- a single optical inspection system for inspecting a LEUT mounted on either one of said removable LEUT holders, having two inspection modes including a mapping mode in which at least one optical parameter of the LEUT is mapped and a lensmeter mode,
- wherein said negative lens is positioned to diverge rays defined by the Hartmann plate and passing through the LEUT, thereby to facilitate operation of said optical inspection system when operating in said lensmeter mode.
Apparatus for providing optical information regarding spectacles in which are mounted first and second lenses, the apparatus comprising:
- a spectacles analyzer operative to compute optical information characterizing both lenses of said spectacles;
- and
- a prescription analyzer operative to receive a spectacles prescription, compare the spectacles prescription with said optical information, and generate an output indicating whether or not said spectacles comply with said spectacles prescription.
Apparatus for providing optical information regarding an ophthalmic lens, comprising:
- a light source generating an incident measuring beam;
- a Hartmann plate comprising a plurality of holes, and a lens support operative to support the lens such that the lenses' back surface is substantially perpendicular to the incident measuring beam, and is disposed at a predetermined distance in front of said Hartmann plate;
- a lens analyzer operative to generate optical information regarding said lens by analyzing light rays transmitted through said lens and through said plurality of holes in said Hartmann plate;
- and
- an optical information display unit operative to provide an output indication of said optical information.
A method for providing optical information regarding an ophthalmic lens, the method comprising:
- illuminating said lens with an incident measuring beam;
- supporting said lens on a Hartmann plate comprising a plurality of holes, and including a lens support operative to support the lens such that the lenses' back surface is substantially perpendicular to the incident measuring beam, and is disposed at a predetermined distance in front of said Hartmann plate;
- analyzing light rays transmitted through said lens and through at least three of said plurality of holes in said Hartmann plate, to provide a lensmeter measurement functionality;
- analyzing light rays from a portion of said ophthalmic lens to provide mapping measurement functionality;
- and
- providing output indication of said lensmeter measurement and said mapping measurement simultaneously on one display unit.
Dependencies are inferred from the claim text.