Abstract: An ellipsometer uses a broadband light source and a Fresnel cone to produce a simultaneous broadband polarization state generator with no moving parts. The detector of the ellipsometer includes a diffractive element to spatially separate the wavelengths of the light from the sample. The wavelengths may be spatially separated sufficiently that there is no overlap of bands of wavelengths when imaged by a two-dimensional sensor or may be temporally separated. Additionally, the detector separates and simultaneously analyzes the polarizations states of the light from the sample so there is no overlap of polarization states when imaged by a two-dimensional sensor and no moving parts are used. The resulting image with separated wavelengths and polarization states may be used to determine at least a partial Mueller matrix for the sample.

Abstract: An ellipsometer uses a broadband light source and a Fresnel cone to produce a simultaneous broadband polarization state generator with no moving parts. The detector of the ellipsometer includes a diffractive element to spatially separate the wavelengths of the light from the sample. The wavelengths may be spatially separated sufficiently that there is no overlap of bands of wavelengths when imaged by a two-dimensional sensor or may be temporally separated. Additionally, the detector separates and simultaneously analyzes the polarizations states of the light from the sample so there is no overlap of polarization states when imaged by a two-dimensional sensor and no moving parts are used. The resulting image with separated wavelengths and polarization states may be used to determine at least a partial Mueller matrix for the sample.

Abstract: A protective guard or set of protective guards for an electronic device may be provided. The protective guard may include sheet of impact absorbing material having a first surface and a second surface opposite the first, and an attachment mechanism provided on the second surface. The protective guard may be configured to be attached to an electronic device via the attachment mechanism.