Color photovoltaic (PV) devices formed using interferomet ric stacks tuned to re? ect color
covering the front side or back side of a PV cell, device, panel, or array are disclosed. Inter …

Illumination devices and methods of making same are disclosed. In one embodiment, an
illumination apparatus includes a light source, a light guide having a planar first surface, a …

A light guide device includes a light guide body and two or more pluralities of spaced-apart
slits. The slits are formed by undercuts in the light guide body. Sidewalls of the slits form …

US PATENT DOCUMENTS 2,534,846 A 12/1950 Ambrose et al. 2,590,906 A 4/1952 Tripp
2,677,714. A 5, 1954 Auwarter 3.247, 392 A 4, 1966 Thelen 3,439,973 A 4, 1969 Paul et al …

In various embodiments described herein, a display device includes a front illumination
device that comprises a light guide disposed forward of an array of display elements, such …

(57) ABSTRACT A display with a photovoltaic (PV) cells integrated as the front side and/or
back side of the display is disclosed. Ambi ent light may reach a PV cell situated behind a …

Embodiments include methods and devices for controlling the spectral profile and color
gamut of light produced by an interferometric display. Such devices include illuminating a …

F2/8/00(2006.01) In various embodiments described herein, a display device
G09G3/20(2006.01) comprising a light collection film and a photovoltaic device G09G …

(57) An interferometric modulator is provided having a faster deformation time constant on
actuation than relaxation time constant upon release from actuation. In some embodiments …

An optical device includes a non-transparent substrate. The optical device further includes a
first optical layer which is at least partially transmissive and at least partially reflective to …