A molding apparatus for molding an optical article has a reactor vessel having an interior cavity configured to receive a quantity of a flowable forming material, a mold assembly defining a mold cavity therein, a diaphragm valve disposed between the reactor vessel and the mold assembly, and a tubing connecting the diaphragm valve to the reactor vessel and the mold assembly. The diaphragm valve is operable between an open configuration to permit a flow of the flowable forming material through the tubing from the reactor vessel to the mold cavity and a closed configuration to block the flow of the flowable forming material from the reactor vessel to the mold cavity. A filter is disposed between the reactor vessel and the diaphragm valve. The tubing has an upstream tubing section between the reactor vessel and the filter and a downstream tubing section between the filter and the diaphragm valve.

An injection mold and an optical lens produced from the injection mold are provided. The injection mold includes a disk-type mold base and a nozzle. A mold cavity chamber is defined by the disk-type mold base. The mold cavity chamber includes an optically effective central runner and an optically ineffective annular runner. Moreover, plural spoiler structures are formed in the optically ineffective annular runner. While a melt is injected from the nozzle to the mold cavity chamber, the plural spoiler structures provide the functions of disturbing the melt flow and decreasing the velocity of the melt in the optically ineffective annular runner. Consequently, before the optically ineffective annular runner is completely filled with the melt, the optically effective central runner is completely filled with the melt. Since no defect is formed in an optically effective zone, the yield of the optical lens is enhanced.

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.

An assembly for molding a lens including a peripheral gasket member having a surrounding wall around an axis to define a through-cavity, the surrounding wall having an internal circumferential ridge portion protruding inwardly towards the axis and partitioning the surrounding wall into an upper wall portion and a lower wall portion, wherein the internal circumferential ridge portion includes a first ridge-flank and a second ridge-flank; a film disposed at the first ridge-flank; an annular member disposed over the film to retain the film between the annular member and the first ridge-flank; a first mold part disposed with a circumferential edge in abutment with the upper wall portion; and a second mold part disposed opposite the first mold part and with a circumferential edge in abutment with the lower wall portion, wherein the peripheral gasket member, the first mold part and the second mold part define a molding cavity therebetween.

The invention relates to a process for manufacturing an optical article comprising at least the following successive steps: (a) producing a first optical functional element A having a first refractive index, named hereafter nA, by injecting in a mold of an injection molding device at least a first material A1, the first optical functional element A having at least a first main face and a second main face, said first main face including a pattern of optical microstructures, (b) coating directly onto said first main face of the first optical functional elementA, a second optical functional element B via a first main face of said second optical functional element, having a second refractive index, named hereafter nB, that is distinct from nA, by injecting into said mold at least a second material B1, characterized in that before performing the step (b), the process further comprises (al) drying the first optical functional element A, said drying step is adapted to or configured to obtain a first optical functional element A having a moisture content lower than or equal to 500 PPM. The invention also relates to an optical article obtained according to the above-mentioned process and its use for myopia control and/or prevention.

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.

The invention relates to a supply apparatus (100) for supplying at least one molding device (500) with a polymerizable mixture, comprising: a tank (110) where is stored the polymerizable mixture, a line (120) for supplying the at least one molding device with said polymerizable mixture, the line being connected to an outlet of the tank for receiving the polymerizable mixture and to an inlet of said at least one molding device, and means for making the polymerizable mixture circulate in said line. According to the invention, the line includes remove means (190) for removing the gas from said polymerizable mixture and for evacuating said gas out of said supply apparatus.