Total external reflection

About: Total external reflection is a research topic. Over the lifetime, 829 publications have been published within this topic receiving 22213 citations.

Reflection film, optical member, and display

Abstract: The present invention provides a reflection film, comprising a right circularly-polarized light reflection layer and a left circularly-polarized light reflection layer as circularly-polarized light reflection layers, each of the circularly-polarized light reflection layers consisting of a layer obtained by fixing a cholesteric liquid-crystalline phase, having a reflection wavelength at which a diffuse reflectance for non-polarized light becomes 50% or more in a wavelength region in which each of the circularly-polarized light reflection layers exhibits selective reflection, the reflection wavelength being in an infrared wavelength region, and the reflection film exhibiting a direct transmittance of non-polarized visible light of 50% or more and a haze value of 5% or less; and an optical member including the reflection film, which can be used as a handwriting input sheet. The optical member can be used by being stuck to the surface of a display.

Anderson localization of light: Strong dependence with incident angle - Supplementary Information

Abstract: This paper studies the transport of light for different incidence angles in a strongly disordered optical medium composed by core-shell nanoparticles (TiO2@Silica) suspended in ethanol solution. A decrease of optical conductance and an increase of absorption near the input border are reported when the incidence angle is increased. We associated this phenomenon to an increase of the density of localized states (localization increase) near the input border, which could be explained by a large increase of internal reflection with the incidence angle, which in turn would be a direct consequence of the enhancement of the effective refractive index near the input border by localization itself. The specular reflection, measured for the photons that enter the sample, is considerably lower than the effective internal reflection undergone by the coherently backscattered photons in the exact opposite direction, indicating a non-reciprocal propagation of light (mirror-symmetry breaking). This study represents a novel approach in order to understand the complex physics involved in a strongly disordered optical medium at the critical regime of approaching localization.

New method for measuring refractive index of liquids

Abstract: measurements of sugar in comestibles, etc. One of the chief methods for the determination of refraction index is based onthe measurement of the angle of a total internal reflection of beam of light at the dividing surface between the liquid and avariously shaped measuring prism of known refraction index. Such method is a "single-beam" one, for the critical angle isdetermined, for instance, by the magnitude of the shift ofthe border line between light and dark with respect to a fixed pointof reference.'3 The refraction index precision of modern critical angle refractometers is about lOs. With the "double-beam"detector, as described in the present paper, it becomes possible to achieve the same result but by means of another principleof operation.

Reflective Optics for Soft X Rays I Grazing Incidence

Abstract: As discussed in Chapter 1, the reflectivities of single surfaces at normal or near-normal incidence for soft X rays are very small. High reflectivities from single surfaces are only obtained at grazing angles of incidence. This is because the refractive index of the reflecting medium is very close to, and slightly less than, that of the surrounding medium (vacuum)—the conditions under which total external reflection can occur.