The Mantle of Invisibility: Nunc id Vides, Nunc ne Vides
Major
Physics
Submission Type
Poster
Area of Study or Work
Physics
Faculty Advisor
Gabe Spalding
Faculty Advisor
Wendy Kooken
Location
CNS Atrium
Start Date
4-11-2026 11:15 AM
End Date
4-11-2026 12:30 PM
Abstract
The Rochester cloak is a four‑lens optical system that guides light around a central region, rendering objects within that region effectively invisible, from a specific viewing direction. While originally demonstrated using small, high‑quality spherical lenses, the underlying design principles allow for alternative optical components. This project reports on the construction and characterization of a Rochester‑style invisibility cloak assembled using large Fresnel lenses salvaged from decommissioned overhead projectors. The use of large lenses will have its challenges; however, Fresnel lenses provide advantages in cost, weight, and scalability. We will demonstrate that large, functional cloaking can be achieved with inexpensive, repurposed components, highlighting the potential for dramatic, low‑cost optical demonstrations in undergraduate laboratories and outreach settings.
The Mantle of Invisibility: Nunc id Vides, Nunc ne Vides
CNS Atrium
The Rochester cloak is a four‑lens optical system that guides light around a central region, rendering objects within that region effectively invisible, from a specific viewing direction. While originally demonstrated using small, high‑quality spherical lenses, the underlying design principles allow for alternative optical components. This project reports on the construction and characterization of a Rochester‑style invisibility cloak assembled using large Fresnel lenses salvaged from decommissioned overhead projectors. The use of large lenses will have its challenges; however, Fresnel lenses provide advantages in cost, weight, and scalability. We will demonstrate that large, functional cloaking can be achieved with inexpensive, repurposed components, highlighting the potential for dramatic, low‑cost optical demonstrations in undergraduate laboratories and outreach settings.