Abstract: A shooting sports sight apparatus to inhibit unwanted stray light of an observable scene. An example apparatus comprises a sight housing having a first end, a second end, an outer surface, and an inner surface. At least one concentric ring is positioned between the first end and the second end. At least one annular groove is defined between the first end of the sight housing and the concentric ring. The concentric ring provides a surface for stray light photons entering the first end of the sight housing to bounce in directions generally away from the line of sight into the annular groove, thereby inhibiting the stray light photons from entering field of regard (FOR) photons reaching the aft end of the sight housing which make up the observable scene where the second end has means for changing the baffle aperture diameter forming the final light baffle of the baffle assembly.

Abstract: A shooting sports sight apparatus to inhibit unwanted stray light of an observable scene. An example apparatus comprises a sight housing having a first end, a second end, an outer surface, and an inner surface. At least one concentric ring is positioned between the first end and the second end. At least one annular groove is defined between the first end of the sight housing and the concentric ring. The concentric ring provides a surface for stray light photons entering the first end of the sight housing to bounce in directions generally away from the line of sight into the annular groove, thereby inhibiting the stray light photons from entering field of regard (FOR) photons reaching the aft end of the sight housing which make up the observable scene where the second end has means for changing the baffle aperture diameter forming the final light baffle of the baffle assembly.

Abstract: An apparatus and method for non-invasively quantifying the hydration of the stratum corneum of a living subject utilizes in vivo spectral measurements made by irradiating skin tissue with near infrared (NIR) light. The apparatus includes a spectroscopic instrument in conjunction with a subject interface. The resulting NIR absorption spectra are passed to an analyzer for further processing, which includes detecting and eliminating invalid spectral measurements, and preprocessing to increase the signal-to-noise ratio. Finally, a calibration model developed from an exemplary set of measurements is applied to predict the SC hydration for the sample. The method of SC hydration measurement provides additional information about primary sources of systematic tissue variability, namely, the water content of the epidermal layer of skin and the penetration depth of the incident light.

Abstract: An apparatus and method for non-invasively quantifying the hydration of the stratum corneum of a living subject utilizes in vivo spectral measurements made by irradiating skin tissue with near infrared (NIR) light. The apparatus includes a spectroscopic instrument in conjunction with a subject interface. The resulting NIR absorption spectra are passed to an analyzer for further processing, which includes detecting and eliminating invalid spectral measurements, and preprocessing to increase the signal-to-noise ratio. Finally, a calibration model developed from an exemplary set of measurements is applied to predict the SC hydration for the sample. The method of SC hydration measurement provides additional information about primary sources of systematic tissue variability, namely, the water content of the epidermal layer of skin and the penetration depth of the incident light.

Abstract: An apparatus and method for non-invasively quantifying the hydration of the stratum corneum of a living subject utilizes in vivo spectral measurements made by irradiating skin tissue with near infrared (NIR) light. The apparatus includes a spectroscopic instrument in conjunction with a subject interface. The resulting NIR absorption spectra are passed to an analyzer for further processing, which includes detecting and eliminating invalid spectral measurements, and preprocessing to increase the signal-to-noise ratio. Finally, a calibration model developed from an exemplary set of measurements is applied to predict the SC hydration for the sample. The method of SC hydration measurement provides additional information about primary sources of systematic tissue variability, namely, the water content of the epidermal layer of skin and the penetration depth of the incident light.