Patent classifications
B29D11/00432
Systems, articles, and methods for integrating holographic optical elements with eyeglass lenses
Systems, articles, and methods integrate photopolymer film with eyeglass lenses. One or more hologram(s) may be recorded into/onto the photopolymer file to enable the lens to be used as a transparent holographic combiner in a wearable heads-up display employing an image source, such as a microdisplay or a scanning laser projector. The methods of integrating photopolymer film with eyeglass lenses include: positioning photopolymer film in a lens mold and casting the lends around the photopolymer film; sandwiching photopolymer film in between two portions of a lens applying photo polymer film to a concave surface of a lens and/or affixing a planar carrier (with photopolymer film thereon) to two points across a length of a concave surface of a lens.
Method and Machine for the Production of an Optical Element by Additive Manufacturing
A method and a device for the production of an optical element (100) from a curable material by using an additive manufacturing technology. This method comprises a multiplicity of curing steps for curing said curable material inside outlines (C1) whose geometry are determined according to the geometry of said optical element, by applying a curing surface energy onto the curable material that is higher in a first area (A1) that extends sensibly along said sliced outline than in a second area (A2) situated within the first area, the curing surface energy applied to the second area being strictly lower than a first predetermined energy threshold.
Method and System for Outputting a Manufacturing File for Producing an Optical Element
The invention relates to a method for outputting a manufacturing file for producing an optical element (100) from a curable material (50) by using an additive manufacturing technology, comprising the steps of:—acquiring the desired geometry of the optical element,—obtaining a discretization of the desired geometry in volume units described by data relative to position parameters of the volume units and to the dimension of the volume units,—associating at least a volume unit with a kinetic parameter that relates to the curing pace imposed to the curable material of the volume unit,—producing, using at least one processor, a manufacturing file comprising said data and said kinetic parameter for manufacturing at least the optical element, and—outputting said manufacturing file.
EDGE SEALANT APPLICATION FOR OPTICAL DEVICES
Techniques are described for applying an edge sealant to the edge of a multi-layer optical device. In particular, embodiments provide an apparatus that performs a precision measurement of the perimeter of an eyepiece, applying the edge sealant (e.g., polymer) based on the precision-measured perimeter, and subsequently cures the edge sealant, using ultraviolet (UV) light that is directed at the edge sealant. The curing process may be performed within a short time following the application of the edge sealant, to ensure that any wicking of the edge sealant between the layers of the eyepiece is controlled to be no greater than a particular depth tolerance. In some examples, the edge sealant is applied to the optical device prevent, or at least reduce, the leakage of light from the optical device, and also to ensure and maintain the structure of the multi-layer optical device.
FORMING A COMBINED LENS
Apparatus and methods are described including adhering a first lens to a second lens such as to form a combined lens having a given optical design, by placing the first lens and the second lens in respective first and second pressure chambers with an adhesive layer disposed between the first lens and the second lens, bringing a convex surface of the first lens into contact with the adhesive layer, and bringing a concave surface of the second lens into contact with the adhesive layer. Other applications are also described.
SYSTEM AND METHODS FOR FABRICATION OF CURED ARTICLES
A fabrication system comprising a chamber containing an immersion liquid, a reservoir comprising a curable liquid being immiscible with said immersion liquid, the reservoir in fluid communication with a port configured for transferring the curable liquid into said chamber; an actuator configured for being in operable communication with said reservoir; a support configured for binding said curable liquid and in operable communication with said port. Further, a method for manufacturing a cured article with a predetermined shape is provided.
Method for additively manufacturing an opthalmic lens and opthalmic lens
A method of manufacturing an ophthalmic lens, including: a step of providing a starting optical system (30) having a first optical function and a first main refractive index; a step of providing a transition layer (20) intended to be disposed between the starting optical system (30) and a complementary optical element (12) having a second main refractive index, the transition layer (20) aiming at reducing unwanted reflection caused by the mismatch between the first and the second main refractive index, the transition layer (20) having a transition optical function; and a step of additively manufacturing the complementary optical element (12) on the transition layer (20), the complementary optical element (12) having a second optical function, the second optical function being predetermined as a function of the first optical function and of the transition optical function.
METHOD OF MANUFACTURING AN OCULAR PROSTHESIS AND OCULAR PROSTHESIS THEREOF
A method (100) of forming an ocular prosthesis (13) comprising: receiving (102a) three dimensional scan data of a patients eye, the three dimensional scan data including volumetric data of at least an iris region, a pupil region and a cornea region of the eye; and forming (110) an ocular prosthesis (13) by an additive manufacturing process, the ocular prosthesis (13) having a body (15) with a volume, wherein the body of the prosthesis includes a three dimensional iris region (23), a three dimensional pupil region (25) and a three dimensional cornea region (26), and the volumetric data determines the size and shape of the iris region (23), the pupil region (25) and the cornea region (26) of the prosthesis (13).
OPHTHALMIC LENS AND OPHTHALMIC LENS TREATMENT METHOD
The present disclosure relates to an ophthalmic lens treatment method, comprising heating, in a humidified environment, a semi-finished lens (20) to a predetermined temperature, the semi-finished lens (20) containing a base lens (10) and a film structure (2) of a predetermined thickness, and surfacing the semi-finished lens (20) to a predetermined power, wherein the predetermin ed temperature is a temperature above a softening temperature of the film structure (2), the humidity of the humidified environment is between 30% and 99% and the predetermined thickness of the film structure (2) is between 200 .Math.m and 800 pm.
SHAPING AN OPHTHALMIC LENS
Apparatus and methods are described including an additional lens (24) made from an amorphous viscoelastic material and having an optical design. A curvature of the additional lens (24) is changed such as to conform with a curvature of abase eyeglasses lens (22), without causing a loss of the optical design of the additional lens (24), by heating the additional lens (24) to a temperature at which a Tan Delta of the amorphous viscoelastic material is between 0.2 and 0.8, and shaping the additional lens (24). Subsequently, the additional lens (24) is adhered to the base eyeglasses lens (22). The optical design of the additional lens (24) is such that, upon being adhered to the base eyeglasses lens (22), the adhered base eyeglasses lens (22) and the additional lens (24) provide a combined lens (20) having a desired optical prescription. Other applications are also described.