Patent · US Active

Injection overmolding with heat/cool cycling for making optical lenses using 3D-printed functional wafers

US12226968B2 · kind B2 · utility

0Cited by

1References

8Claims

0Family size

Assignee

Essilor International · FR

Inventors

Haifeng Shan · Dallas, US
Aref Jallouli · Midland, US
Hao-Wen Chiu · Palm Harbor, US

Key dates

Filing date	Jul 1, 2020
Grant date	Feb 18, 2025
Priority date	—
Expiry date	Sep 30, 2040

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB33Y80/00
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Disclosed herein is an injection molding method for making optical thermoplastic lenses using 3D—printed functional wafers. The method employs a variable injection molding cavity temperature that is heated to at least wafer Tg—10° C.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.