Lock-in thermal IR imaging using a solid immersion lens

A hemispherical silicon solid immersion lens (SIL) was used to improve the spatial resolution of front-side thermal IR imaging in lock-in mode. The bottom of the SIL was cone-shaped to reduce the footprint of the SIL to the size of the imaged region. Caused by the lock-in operation mode, the detection limit improves by 2-3 orders of magnitude, and scattered light does not limit the image contrast. By using this SIL in combination with an IR camera working in

• Type: Journal
• Year: 2006
• Where: MR
• Authors: O. Breitenstein, F. Altmann, T. Riediger, D. Karg, V. Gottschalk
• Keywords: Front-side Thermal Ir, Lock-in Mode, Lock-in Operation Mode, MR 2006, Robotics