Class / Patent application number | Description | Number of patent applications / Date published |
264200200 | Changing mold size or shape during molding or with shrinkage compensation | 11 |
20090146331 | DEFORMABLE MOLDS AND METHODS FOR THEIR USE IN THE MANUFACTURE OF OPHTHALMIC LENSES - The present provides deformable molds and methods for manufacturing ophthalmic lenses using deformable molds. The molds of the invention may be used in the custom manufacture of ophthalmic lenses. | 06-11-2009 |
20100127413 | Method for Manufacturing Plastic Lens - A method for manufacturing a plastic lens includes: disposing a pair of plastic lens molding dies in such a way that the dies face each other and are spaced apart from each other by a predetermined distance; forming a frame between the pair of dies; injecting a polymerizable composition into the space surrounded by the frame and the pair of dies; and polymerizing the polymerizable composition in the space to form a plastic lens. | 05-27-2010 |
20100258962 | PROCESS AND APPARATUS FOR THE AUTOMATIC MANUFACTURING OF DIFFERENT TORIC OPTICAL LENSES - A process for the automatic manufacturing of different toric optical lenses having a front surface and a rear surface having a predetermined rotational orientation relative to one another, and with at least one of the front and rear surfaces having a toric portion, comprises forming a first toric lens by:
| 10-14-2010 |
20110042839 | METHOD FOR MAKING OPTICAL ELEMENT, AND IMAGE FORMING APPARATUS - A method for injection molding an imaging optical element to be used in an optical scanning apparatus for guiding a light ray in a main scanning direction and a sub-scanning direction. In the imaging optical element, the light ray passes through at least one optical functional surface and does not pass over the meridional line including the optical axis. The imaging optical element is injection-molded through an initial molding step and other various measurement and correction steps. | 02-24-2011 |
20110049736 | INJECTION MOLDING OF PART HAVING NONUNIFORM THICKNESS - Injection molding of a part having a nonuniform thickness is provided. One disclosed embodiment of an injection molding device includes one or more side walls, a first mold surface intersecting the side walls and being stationary with respect to the side walls, and a second mold surface intersecting the side walls so as to define with the side walls and the first mold surface a cavity configured to receive a metered amount of injected molten thermoplastic material. The second mold surface is moveable toward the first mold surface in such a manner that a first end of the second mold surface moves a larger physical travel distance toward the first mold surface than does a second end of the second mold surface during a molding process. | 03-03-2011 |
20120217664 | METHOD FOR PRODUCING PLASTIC LENS AND INJECTION COMPRESSION MOLDING APPARATUS - Provided is a method for producing a plastic lens, wherein, in molding a plurality of plastic lenses having different optical surface shapes simultaneously in a single mold 50, by designing cavities 3 | 08-30-2012 |
20140035176 | CONTACT LENS MANUFACTURING METHOD - In manufacturing a contact lens, a contact lens mould arrangement in which the engagement between the mould halves is unconstrained and at least one mould half is sufficiently pliable or flexible that during the curing of the contact lens composition at one mold half may move or flex relative to the other to define a post-cure mould cavity of smaller volume than the pre-cure mould cavity and during which the curvatures of the first and/or second mould surfaces are allowed to change provides a significantly more efficient manufacturing process and enables one mould half to be readily utilized as a blister cup for contact lens packaging. | 02-06-2014 |
20140319709 | LENS WITH LOW BIREFRINGENCE, METHOD OF FABRICATING THE LENS, AND LIGHT SCANNING UNIT INCLUDING THE LENS - There are provided a lens, a method of fabricating the lens, and a light scanning unit. The lens includes a lens portion having an effective optical surface, and a gate-side flange portion between the lens portion and a gate-side end of the lens. If the lens is disposed between two polarizers configured to polarize light linearly in perpendicular directions and is illuminated in an optical axis direction, interference fringes are generated on the lens, and peripheral interference fringes of the interference fringes extend continuously from the gate-side end and are longer than the gate-side flange portion. | 10-30-2014 |
20150115486 | METHOD OF MAKING A SPECTACLE LENS - A method for making a spectacle lens includes joining a mold and a sealing ring. The mold has an integrated block piece and a mold shell made by primary shaping and the sealing ring has a first end face, a second end face, a peripheral seal, an opening disposed on the first end face configured to receive a mold, and a flexible membrane on the second end face. A polymerizable material is introduced into the mold cavity with the aid of a pump action of the flexible membrane of the sealing ring. The flexible membrane of the sealing ring is fixed in a desired surface shape and the polymerization is carried out. The mold is removed with a cast-on spectacle lens blank. | 04-30-2015 |
264200400 | Preform | 2 |
20120193821 | METHOD OF MANUFACTURING LENS - A manufacturing method uses a molding unit to manufacture lenses out of a structure with a plurality of lens intermediates coupled to each other through a runner. The molding unit includes a holding member provided with first opening parts and second opening parts coaxial with each other, and molding chambers. First molding dies and second molding dies are inserted into the first opening parts and the second opening parts respectively. The holding member is further provided with a path that allows introduction of the lens intermediates into the molding chambers. In a manufacturing process, the lens intermediates are guided to predetermined positions in the corresponding molding chambers by operating the structure to cause the lens intermediates and the runner to move along the path. Next, a pressing pressure is applied to the lens intermediates to form molded lenses. | 08-02-2012 |
20140091488 | MICROSTRUCTURE FORMING MOLD AND OPTICAL ELEMENT MANUFACTURING METHOD - This microstructure forming mold forms a concavoconvex reflection preventing part on a concave lens surface of a lens main body including the concave lens surface with curvature. The reflection preventing part is formed using a surface processing device including: a molding surface part that transfers the reflection preventing part; a base body part that supports the molding surface part in a bendable manner; and a cavity portion, an annular cavity portion, and a liquid supply unit that deform the base body part to bend the molding surface part. | 04-03-2014 |