| Patent Number |
Title Of Patent |
Date Issued |
| 7147903 |
High efficiency optical devices |
December 12, 2006 |
| Optical devices such as backlight assemblies, according to the present invention include a multilayer optical film in which at least one of the layers comprises an oriented birefringent polymer. The multilayer optical film exhibits low absorptivity and can reflect light approaching at |
| 7038745 |
Brightness enhancing reflective polarizer |
May 2, 2006 |
| A multiple layer reflective polarizer 12 is described. This element is placed between and optical cavity 24 and an LCD module 16 to form an optical display. The reflective polarizer reflects some light into the optical cavity 24 where it is randomized and may ultimately emerge with t |
| 6934082 |
Optical devices using reflecting polarizing materials |
August 23, 2005 |
| Optical devices using reflective polarizers and, in particular, diffusely reflective polarizers are provided. Many of the optical devices utilize the diffusely reflecting and specularly transmitting properties of diffusely reflecting polarizers to enhance their optical characteristics. |
| 6924014 |
High efficiency optical devices |
August 2, 2005 |
| Optical devices according to the present invention include a multilayer optical film in which at least one of the layers comprises an oriented birefringent polymer. The multilayer optical film exhibits low absorptivity and can reflect light approaching at shallow angles as well as no |
| 6905220 |
Backlight system with multilayer optical film reflector |
June 14, 2005 |
| The present invention includes a backlight system incorporating a back reflector and/or a lamp cavity reflector constructed of a multilayer optical film. |
| 6888675 |
Transflective displays with reflective polarizing transflector |
May 3, 2005 |
| A transflector is described which increases efficiency and brightness under both ambient and supplemental lighting conditions in visual display applications. In one embodiment, the transflector includes a reflective polarizing element that reflects one polarization of light and transmits |
| 6641883 |
High efficiency optical devices |
November 4, 2003 |
| Optical devices such as light pipes which incorporate multilayer optical films in which the refractive indices of two adjacent layers in the thickness direction are substantially matched or are small relative to the difference in refractive indices of said two adjacent layers in an given |
| 6543153 |
Reflective polarizer having improved properties and optical display with improved reflective pol |
April 8, 2003 |
| A multiple layer reflective polarizer 12 is described. This element is placed between and optical cavity 24 and an LCD module 16 to form an optical display. The reflective polarizer reflects some light into the optical cavity 24 where it is randomized and may ultimately emerge with t |
| 6515785 |
Optical devices using reflecting polarizing materials |
February 4, 2003 |
| Optical devices using reflective polarizers and, in particular, diffusely reflective polarizers are provided. Many of the optical devices utilize the diffusely reflecting and specularly transmitting properties of diffusely reflecting polarizers to enhance their optical characteristics. |
| 6447135 |
Lightguide having a directly secured reflector and method of making the same |
September 10, 2002 |
| A lightguide includes an input edge surface, a back surface and an output surface. A reflector is directly secured to the back surface by, for example, adhesive bonding. |
| 6262842 |
Transflective displays with reflective polarizing transflector |
July 17, 2001 |
| A transflector is described which increases efficiency and brightness under both ambient and supplemental lighting conditions in visual display applications. In one embodiment, the transflector includes a reflective polarizing element that reflects one polarization of light and transmits |
| 6210785 |
High efficiency optical devices |
April 3, 2001 |
| Optical devices such as light pipes which incorporate multilayer optical films in which the refractive indices of two adjacent layers in the thickness direction are substantially matched or are small relative to the difference in refractive indices of said two adjacent layers in an given |
| 6124971 |
Transflective displays with reflective polarizing transflector |
September 26, 2000 |
| A transflector is described which increases efficiency and brightness under both ambient and supplemental lighting conditions in visual display applications. In one embodiment, the transflector includes a reflective polarizing element that reflects one polarization of light and transmits |
| 6101032 |
Light fixture having a multilayer polymeric film |
August 8, 2000 |
| A polarized light source includes a diffuse light source and a reflective polarizing element placed proximate thereto. The reflective polarizing element transmits light of a desired polarization and reflects light of another polarization back into the diffuse source where it is randomize |
| 6080467 |
High efficiency optical devices |
June 27, 2000 |
| Optical devices such as light pipes which incorporate multilayer optical films in which the refractive indices of two adjacent layers in the thickness direction are substantially matched or are small relative to the difference in refractive indices of said two adjacent layers in an given |
| 6025897 |
Display with reflective polarizer and randomizing cavity |
February 15, 2000 |
| A multiple layer reflective polarizer 12 is described. This element is placed between and optical cavity 24 and an LCD module 16 to form an optical display. The reflective polarizer reflects some light into the optical cavity 24 where it is randomized and may ultimately emerge with t |
| 6018419 |
Diffuse reflectors |
January 25, 2000 |
| Highly efficient diffusely reflecting multilayer mirrors diffusely reflect light incident upon them. Highly efficient diffusely reflecting multilayer polarizers diffusely reflect light of one polarization while diffusely transmitting the other polarization. The diffusely reflecting mirro |
| 5828488 |
Reflective polarizer display |
October 27, 1998 |
| A brightness enhanced reflective polarizer includes a reflective polarizer and a structured surface material. |
| 5825542 |
Diffusely reflecting multilayer polarizers and mirrors |
October 20, 1998 |
| Highly efficient diffusely reflecting multilayer mirrors diffusely reflect light incident upon them. Highly efficient diffusely reflecting multilayer polarizers diffusely reflect light of one polarization while diffusely transmitting the other polarization. The diffusely reflecting mirro |
| 5771328 |
Light directing film having variable height structured surface and light directing article const |
June 23, 1998 |
| A light directing film including a first surface and a second structured surface. The structured surface includes a repeating pattern of prism zones including at least a first zone having a plurality of prism elements with peaks disposed at a first distance from a reference plane and a |
| 5363470 |
Displacing an optical lighting film's linear array of grooves to facilitate emission of light |
November 8, 1994 |
| The present invention provides an apparatus for transporting and distributing light. The apparatus comprises a longitudinal, hollow light conduit with a linear array of prisms arranged side-by-side to form grooves, the grooves disposed in a non-parallel orientation with respect to th |
| 5202683 |
Optical traffic preemption detector |
April 13, 1993 |
| An optical traffic preemption detector detects pulses of light emitted by an approaching emergency vehicle and provides an output signal which is processed by a phase selector. The phase selector can request a traffic signal controller to preempt a normal traffic signal sequence to give |
| 5095415 |
Light fixture for externally illuminated sign |
March 10, 1992 |
| A light fixture has a housing having an axis and a light source for detecting light into the housing along the housing axis. A first section of the housing occupies a first portion of the housing's perimeter and includes a light guide material. A second section of the housing occupies |
