Microlensing uses gravitational lensing of individual stars to detect planets. In a microlensing event, the light from one star, the “source”, is magnified by the gravitational field of another star, the “lens”. A microlensing event occurs when the paths of two stars on the sky pass very close to each other, typically less than 1′′ [An arcsecond (′′) is 1/3600th of a degree. It may be further d...

Powerful blue-light emitting dental curing lights are used in dental offices to photocure resins in the mouth. In addition, many dental personnel use magnification loupes. This study measured the effect of magnification loupes on the "blue light hazard" when the light from a dental curing light was reflected off a human tooth. Loupes with 3.5x magnification (Design for Vision, Carl Zeiss, and Q...

Errors resulting from magnification variations of optical system are largely generated in threemensional shape measurements based on depth-from-focus. Focus measures are wrongly or ambiguously tracted, due to the variations. In this paper, a DFF-based methodology considering these magnification riations is proposed to make accurate measurements in surface morphology with high depth discontinuit...