Forvia has been granted a patent for a process to manufacture optical lenses from glass. The method involves tempering a glass blank, press-molding it between molds to form the lens, and using an escape cavity slide to create an additional edge based on the volume of the blank. GlobalData’s report on Forvia gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Forvia, Autonomous seating was a key innovation area identified from patents. Forvia's grant share as of January 2024 was 45%. Grant share is based on the ratio of number of grants to total number of patents.

Process for manufacturing optical lens with additional edge formation

Source: United States Patent and Trademark Office (USPTO). Credit: Forvia SE

A recently granted patent (Publication Number: US11884570B2) outlines a novel process for manufacturing optical lenses. The process involves providing a glass blank with a specific volume and utilizing molds to press-mold the blank into an optical lens. The first mold forms the first optical surface of the lens within the intended light path, while the second mold shapes the second optical surface and part of the base edge. An escape cavity slide, comprising a plunger and an elastic element, is used to displace the plunger based on the blank's volume, creating an additional edge on the lens that does not interfere with the light path.

The patent details various claims related to the manufacturing process, including the displacement limit of the plunger, the design of the additional edge forming surface, and the use of an elastic element like a spring. The process ensures that the additional edge formed is not within the intended light path through the lens, maintaining optical clarity and functionality. By incorporating these specific features and mechanisms, the patented process aims to streamline the production of optical lenses with precision and efficiency, offering a unique approach to lens manufacturing in the optical industry.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.