Company Filing History:
1 out of 11 
1 out of 3 Years Active: 1990-1992
Title: Innovations by Eric Dufresne in Holographic Technology
Introduction
Eric Dufresne, a Paris-based inventor, has made significant contributions to the field of holography. With a total of two patents to his name, his work showcases advanced methodologies and apparatuses that utilize incoherent light, positioning him as a notable figure in the realm of optical innovations.
Latest Patents
Dufresne's latest patents are groundbreaking in their approach to holographic technology. The first patent, titled "Holographic Apparatus Using Incoherent Light," describes an innovative system comprising a conoscopic setup with a birefringent crystal placed between two polarizers. This apparatus also features an aperture angle limiter, enhancing the control over light rays and improving the quality of the holographic images produced.
His second patent, "Holographic Method and Apparatus Using Incoherent Light," outlines a sophisticated method for generating quasi-complex holograms. This method employs a conoscope system and involves recording multiple conoscopic holograms of the same object, utilizing varying polarization configurations. By combining these holograms, the method effectively removes biases and conjugate images, ensuring high fidelity in holographic representation.
Career Highlights
Throughout his career, Eric Dufresne has been associated with prestigious organizations such as the French State, represented by the Minister of Posts and Telecommunications, and the French National Center for Telecommunications Studies. His experience within these institutions has allowed him to delve deep into the intricacies of telecommunications and optical technologies.
Collaborations
Dufresne’s journey has not been solitary; he has worked alongside distinguished colleagues like Gabriel Sirat and Pierre Chavel. Collaborating with such professionals has undoubtedly enriched his research and development efforts, fostering an environment of innovation and progress in holographic technologies.
Conclusion
Eric Dufresne's contributions to the field of holography through his patents represent a significant leap forward in the use of incoherent light in optical systems. His career, bolstered by associations with reputable institutions and collaborations with notable colleagues, has firmly established him as an impactful inventor in the scientific community. As technology continues to evolve, Dufresne’s work may pave the way for new advancements in holography and related fields.