The University of Southampton

Tapashree Roy

Nikolay Ivanovich Zheludev

Edward Thomas Foss Rogers

Jari Juhani Lindberg

Salatore Savo

Mark Richard Dennis

Vassili Savinov

A super-oscillatory lens () having a pre-defined pattern to spatially modulate the light beam in amplitude and/or phase which has a blocking element () formed integrally with the lens, or as a separate component adjacent to the lens, which is opaque to the light beam to cause diffraction of the light beam around the blocking element and formation of a shadow region (). The lens and blocking element focus the light beam to form an elongate needle-shaped focus () in the shadow region (). In any application in which it is necessary to scan a small spot over a surface, compared with a conventional objective lens focus the elongate shape of the focus relaxes the requirement on a feedback loop to maintain a constant separation between a scan head and a surface being scanned. The elongate shape is also ideal shape for materials processing applications.

Growing community of inventors

West Bengal, India

Tapashree Roy