Patent ID: 8933384
Filing Date: 2015-01-13
Classification: G01N,G02B

Abstract:
1. A selective system for bright field imaging technique and diffraction imaging measurement technique, comprising: a surface for supporting a specimen, the surface configured to be moved laterally and vertically; a first illumination source for the bright field imaging technique and a second illumination source for the diffraction measurement imaging technique; a plurality of reflective and refractive devices arranged to direct and focus at least part of the light radiation from each of the first and second illumination sources to the surface such that the at least part of the light radiation from each of the first and second illumination sources illuminates substantially the same area on the surface; a sensor configured to receive light radiation from the specimen; and a power interface configured to power the first and second illumination sources and the sensor, wherein vertical movement of the surface from a first position to a second position allows the system to selectively change between i) the bright field imaging technique to ii) the diffraction measurement imaging technique without the need to i) move the surface laterally, ii) move the sensor, or iii) move any of the plurality of reflective and refractive devices.