Abstract: Systems and methods used to illuminate samples are disclosed. An illumination system includes a stage to support a sample thereon, a first electromagnetic (EM) radiation source to provide first EM radiation, a second EM radiation source to provide second EM radiation, and optical equipment to combine at least a portion of the first EM radiation with at least a portion of the second EM radiation to provide combined EM radiation to the stage to illuminate the sample. A method of illuminating a sample includes illuminating a first input of a dichroic beam splitter with white light from a white light emitting diode (LED), illuminating a second input of the dichroic beam splitter with ultraviolet (UV) light from a UV LED, and directing combined light from an output of the dichroic beam splitter toward the sample.

Abstract: Systems and methods here may be used for a setup of image capturing of a gemstone, such as a diamonds that are of high clarity grades. The present embodiments can provide methods to capture a diamond surface and internal clarity features from a diamond table and through and of other facets. Systems and methods may be used to convert gemstone dimension information into azimuth, slope, and distance information and adjust the motorized stage accordingly for surface imaging. Further, a calibration method can consider the offsets between design and actual system alignment. A calibration process can be used to compensate the offsets. Further, an additional conversion can be derived to compensate the offset caused by the geometry of the gemstone. The methods can automatically capture surface reflection images on facets of the gemstone and internal features taken through facets of the gemstone.

Abstract: Systems and methods here may be used for automated alignment and focus adjustment for one or multiple sample gemstones on a stage, including determining gemstone sample tilt based on image data, automatically moving a stage to align the tilted sample, determining a focal plane that overlaps a focal point of a camera with the gemstone, and automatically moving a stage to the focal plane.

Abstract: Systems and methods here may be used for a laser inscriber or engraver of a gemstone using software feedback loops and multiple cameras to auto focus the system and automate the inscription.

Abstract: Systems and methods here may be configured for cooling and examining materials. In some example embodiments, the system may include a main thermoconductive body with indentations on the top surface, a bottom surface having legs structures along the edge, wherein the bottom surface and the plurality of leg structures form a partially enclosed bottom chamber, and a center channel connecting the top surface and the bottom chamber.

Abstract: Systems and methods here may be configured for cooling and examining materials. In some example embodiments, the system may include a main thermoconductive body with indentations on the top surface, a bottom surface having legs structures along the edge, wherein the bottom surface and the plurality of leg structures form a partially enclosed bottom chamber, and a center channel connecting the top surface and the bottom chamber.

Abstract: Systems and methods here may be configured for cooling and examining materials. In some example embodiments, the system may include a main thermoconductive body with indentations on the top surface, a bottom surface having legs structures along the edge, wherein the bottom surface and the plurality of leg structures form a partially enclosed bottom chamber, and a center channel connecting the top surface and the bottom chamber.

Abstract: Systems and methods here may be configured for cooling and examining materials. In some example embodiments, the system may include a main thermoconductive body with indentations on the top surface, a bottom surface having legs structures along the edge, wherein the bottom surface and the plurality of leg structures form a partially enclosed bottom chamber, and a center channel connecting the top surface and the bottom chamber.