(4) High Resolution CCTV Camera and High Precision Optics for Sample Observation During Fracturing

To allow the analyst to position the fracturing tool precisely, a high resolution CCTV camera is mounted on an optically flat glass window on the preparation chamber. The zoom camera covers a field of view from >3mm to ~450µm. At high magnification, the lateral resolution is ~2-3µm.

Sample illumination is achieved using a halogen lamp with an integral dichroic reflector assembly mounted externally on the preparation chamber (not shown).