Paul Lefillastre

Title: Paul Lefillastre: Innovator in Ophthalmic Lens Technology

Introduction

Paul Lefillastre is a notable inventor based in Charenton le Pont, France. He has made significant contributions to the field of ophthalmic lens technology, holding a total of 4 patents. His innovative methods focus on improving the bonding of films to curved substrates, which is crucial for the production of high-quality ophthalmic lenses.

Latest Patents

Lefillastre's latest patents include a method of bonding a film to a curved substrate. This method involves preforming the film by applying a pneumatic pressure difference between two sides of the film while heating it. An intermediate shape is conferred on the film, allowing it to be applied against a curved face of the substrate. The process ensures that the film maintains its shape through an adjusted pressure difference and is pressed against the substrate using a movable support. This technique is particularly useful for creating defect-free ophthalmic lenses with a film bonded to them.

Another significant patent is a method for sticking a film onto a curved substrate. This method retains the film on a deformable membrane using connecting means that allow portions of the film to slip relative to the membrane during deformation. This innovative approach reduces the stresses created in the film, making it ideal for applying functional films to ophthalmic lenses.

Career Highlights

Throughout his career, Paul Lefillastre has worked with prominent organizations such as Essilor International and the Centre National De La Recherche Scientifique. His work in these institutions has allowed him to develop and refine his innovative techniques in lens technology.

Collaborations

Lefillastre has collaborated with notable colleagues, including Jean-Paul Cano and Antoine Marty. These partnerships have contributed to the advancement of his research and the successful implementation of his patented methods.

Conclusion

Paul Lefillastre's contributions to ophthalmic lens technology through his innovative patents demonstrate his expertise and commitment to improving the industry. His work continues to influence the development of high-quality optical products.