Remote refocusing for multi-scale imaging.

Area of Science:

• Microscopy and Optical Imaging
• Biophysics

Background:

• Remote focusing (RF) allows rapid volumetric imaging by adjusting focus across planes.
• Aligning multiple objectives in a remote setting while maintaining performance is a significant challenge.

Purpose of the Study:

• To propose a straightforward technique for aligning multiple objectives with a single remote objective.
• To meet the critical requirements of remote focusing for advanced microscopy.

Main Methods:

• A customized optical approach using identical commercial optical components for alignment.
• Ensuring all optical elements meet the stringent criteria for effective remote focusing.

Main Results:

• The proposed RF technique demonstrates performance comparable or superior to conventional methods over extended axial depths.
• The system offers flexibility for objective switching, enabling multi-scale imaging capabilities.

Conclusions:

• The developed technique effectively addresses challenges in multi-resolution imaging.
• Experimental validation in a water medium confirms the efficacy for capturing images from distinct objectives.