Method of Producing Gradient Photochromic Lens and Product Thereof

    公开(公告)号:US20240345421A1

    公开(公告)日:2024-10-17

    申请号:US18299136

    申请日:2023-04-12

    发明人: Yi Zhuang

    IPC分类号: G02C7/10 B29D11/00 D06P5/02

    摘要: A method of producing a gradient photochromic lens comprises providing a lens and a dyeing trough, with the lens including a front surface and a rear surface; immersing the lens in the dyeing trough to proceed with dyeing, and moving the lens out of the dyeing trough, forming a gradient dyed layer on each of the front surface and the rear surface of the lens after drying and hardening; providing a photochromic optical adhesive including a color changing agent combined with an optical adhesive; providing a film having a bonding face, and disposing the photochromic optical adhesive on the bonding face; and bonding the film to the front surface of the lens via the bonding face. The lens produced from the method provides a gradient photochromic effect while increasing the absorption effect of ultraviolet rays and prolonging the service life.

    Method and system for producing a gradient polar film

    公开(公告)号:US12115744B2

    公开(公告)日:2024-10-15

    申请号:US17416899

    申请日:2019-12-09

    IPC分类号: B29D11/00 G02C7/12

    摘要: A system and method for manufacturing an ophthalmic lens is provided. The method involves preparing a cross-polarization cancelling optical film for an optical article comprising providing a film having at least a first section comprising a first edge, a second section comprising a second edge, and a predetermined color intensity; providing an apparatus, wherein the apparatus comprises at least a first roller and a second roller, wherein the first roller and the second roller are configured to stretch at least a portion of the film; and continuously and asymmetrically stretching at least a portion of the film using the apparatus, while substantially maintaining the color intensity of the film.