Robert Chisholm

Title: Robert Chisholm: Inventor of an Electrically Switchable Liquid Crystal Lens

Introduction

Robert Chisholm is an inventor associated with Amesbury, Great Britain, and Coopervision International Limited. His patent work concerns an electrically switchable liquid crystal cell designed for use in a lens, including a contact lens.

Latest Patents

The supplied information lists one patent for Chisholm: “Electrically Switchable Liquid Crystal Cell, Contact Lens and Method Relating Thereto.” The invention describes a liquid crystal cell containing a diffractive optical element and liquid crystal material that can switch between matched and unmatched refractive-index states. In the matched state, the diffractive element does not contribute focal power to the lens. The element’s peaks and troughs have rounded corners, and the patent also addresses methods for manufacturing the cell. Chisholm is credited with 1 patent in the information provided.

Career Highlights

Chisholm’s listed invention connects liquid crystal technology with lens design, with potential application in electrically adjustable optical devices. The supplied data associates him with Coopervision International Limited.

Collaborations

The listed coworkers are Roger Brian Minchin Clarke and Robert Oag. The information provided does not specify their roles or the nature of their collaboration with Chisholm.

Conclusion

Robert Chisholm’s recorded patent work focuses on a switchable liquid crystal cell for lens applications, combining refractive-index control with a diffractive optical element.