High resolution optical microscope with 3D and chemical analysis capabilities must meet the following features and specifications: 1.1. Optical System: • Digital camera-based acquisition system. • Minimum 20x (or lower) to 200x optical magnification • Eight megapixel (nominal 4K) or greater digital resolution. • Capable of resolving 5 micron or smaller particles. • High Dynamic Range (HDR) imaging capable. 1.2. Stage System: • Automated/Motorized stage capable of 1-micron fine positioning • Compatible with various sample types and sizes up to 27 × 46 millimeters (standard thinsections) or greater. • Capable of imaging both prepared (e.g. petrographic thinsections) and minimally prepared natural samples (e.g. rock chips, plant seeds). • Capable of rotation (180 minimum) and rotation angle tracking (either physically on the stage or within acquisition software). The rotation center must be under the objective lens field of view. • Capable of tilt (80 minimum) (stage, camera/optics column, or combined stage+optics system) • Automated sample positioning and location recall...
