Patent application number | Description | Published |
20080219025 | Bi-directional backlight assembly - A backlight assembly emits light out of two light emitting faces using a light source such as side-emitting LEDs that send light into an optical guide or body of optical material that diffuses the light uniformly and emits bi-facially. In this way, two displays, such as LCDs, can be illuminated at the same time and the efficiency is increased. The backlight assembly can be incorporated into an eyewear system such as a binocular display system. | 09-11-2008 |
20090091838 | Eyewear display and media device interconnection system - An eyewear display and media device interconnection system enables a user to connect various media devices and various eyewear or other displays to each other, by using a common interface. The integrated system offers improved ergonomics, lower size, lower power consumption and lower cost. | 04-09-2009 |
20100259826 | PLANAR PLASMONIC DEVICE FOR LIGHT REFLECTION, DIFFUSION AND GUIDING - A planar plasmonic device includes a first material layer having a surface configured to receive at least one photon of incident light. A patterned plasmonic nanostructured layer is disposed adjacent and optically coupled to the first material layer. The patterned plasmonic nanostructured layer includes a selected one of: a) at least a portion of a surface of the patterned plasmonic nanostructured layer includes a textured surface, and b) at least one compound nanofeature including a first material disposed adjacent to a second material within the compound nanofeature. | 10-14-2010 |
20100288344 | METHODS AND APPARATUS FOR WAVELENGTH CONVERSION IN SOLAR CELLS AND SOLAR CELL COVERS - Method and apparatus for providing a photon conversion device including a first layer for photon absorption, and a second layer for photon emission wherein the first layer is separate from the second layer, wherein the first and second layers enable excited electrons and holes to move from the first layer to the second layer and recombine in the second layer. | 11-18-2010 |
20120060918 | ENERGY CONVERSION DEVICE FOR PHOTOVOLTAIC CELLS - An energy conversion device is provided for use, for example, in a photovoltaic solar cell. The device includes an up conversion composite material disposed in cavities in a semiconductor material or in a heat spreader bonded to the solar cell. The up conversion composite material is formed from a mixture of at least two different up conversion materials formed as crystal grains dispersed within an optically transmitting dispersion medium. The up conversion materials may include a crystal material doped with dopant atoms capable of absorbing photons having wavelengths longer than an absorption edge of the semiconductor material and emitting photons having wavelengths shorter than the absorption edge. In this manner, more photons can be utilized in the solar cell and optical coupling between the semiconductor material and the up conversion material is increased, | 03-15-2012 |
20120301074 | IMAGE RELAY WAVEGUIDE AND METHOD OF PRODUCING SAME - Described are embodiments of a process including patterning one or more reflectors on a surface of a substrate of a material, the surface oriented at a selected angle relative to a (100) crystallographic plane of the material, and etching one or more reflectors in the surface, each reflector including one or more reflective surfaces formed by (111) crystallographic planes of the material. Also described are process embodiments for forming a molded waveguide including preparing a waveguide mold, the waveguide mold comprising a master mold including one or more reflectors on a surface of a substrate of a master mold material, the surface oriented at a selected angle relative to a (100) crystallographic plane of the material, each reflector including one or more reflective surfaces formed by (111) crystallographic planes of the material, injecting a waveguide material into the waveguide mold, and releasing the molded waveguide from the waveguide mold. | 11-29-2012 |
20130033756 | METHOD AND APPARATUS FOR A NEAR-TO-EYE DISPLAY - An eyepiece for a head mounted display includes an illumination module, an end reflector, a viewing region, and a polarization rotator. The illumination module provides CGI light along a forward propagation path within the eyepiece. The end reflector is disposed at an opposite end of the eyepiece from the illumination module to reflect the CGI light back along a reverse propagation path within the eyepiece. The viewing is disposed between the illumination module and the end reflector and includes an out-coupling polarizing beam splitter (“PBS”). The out-coupling PBS passes the CGI light traveling along the forward propagation path and redirects the CGI light traveling along the reverse propagation path out of an eye-ward side of the eyepiece. The polarization rotator is disposed in the forward and reverse propagation paths between the out-coupling PBS and the end reflector. | 02-07-2013 |
20130108229 | HEADS-UP DISPLAY INCLUDING AMBIENT LIGHT CONTROL | 05-02-2013 |
20140092461 | PHOTO-CHROMIC COATING FOR OPTICS - A head mounted display (HMD) includes a display module for generating CGI light, an eyepiece, and a frame assembly to support the eyepiece in front of an eye of the user. The eyepiece includes a viewing region to emit the CGI light along an eye-ward direction, an input end peripherally located from the viewing region and optically coupled to receive the CGI light into the eyepiece from the display module, and light bending optics to redirect the CGI light. The eyepiece further includes an ambient scene side through which ambient scene light is received into the eyepiece and an eye-ward side opposite the ambient scene side out of which the ambient scene light and the CGI light are passed along the eye-ward direction. A photo-chromic coating is disposed on the ambient scene and eye-ward sides. | 04-03-2014 |
20140211290 | PHOTO-CHROMIC COATING FOR OPTICS - An eyepiece includes a viewing region to emit display light out of the eyepiece along an eye-ward direction, an input end peripherally located from the viewing region and configured to receive the display light into the eyepiece, one or more optical elements positioned to direct the display light received into the eyepiece out of the viewing region along the eye-ward direction, a first side through which ambient scene light is received into the eyepiece, a second side out of which the ambient scene light and the display light are passed along the eye-ward direction, and a photo-chromic coating disposed on the first side and the second side, the photo-chromic coating to darken in the presence of UV light. | 07-31-2014 |