Abstract: Light emitting diodes, display systems, and manufacturing methods are provided. In an embodiment, by way of example only, a light emitting diode (“LED”) include a die and a lens. The die is configured to emit wavelengths of light within a first predetermined spectral range. The lens is disposed on at least a portion of the die and is configured to filter the light emitted from the die such that a second predetermined spectral range is emitted from the LED.

Abstract: A light source and a method for constructing a light source for a display device are provided. A first member having first and second sides and an opening therethrough is provided. A seal is positioned on the first side of the first member and on at least one side of the opening, the seal having a first thickness. A second member is positioned on the first side of the first member such that the seal is between the first and second members. A light emitting diode (LED) operable to emit light is positioned at least one of partially between the first and second members and partially within the opening. The first member is secured relative to the second member causing a force to be applied to the seal such that the thickness of the seal is reduced to a second thickness and substantially no light can propagate between the seal and the first and second members.

Abstract: A dual mode illumination system with a primary mode providing high efficiency high brightness illumination and a secondary mode providing NVIS compliant illumination. The primary light source is direct view, not NVIS filtered and used for non-NVIS applications. The secondary light source is filtered for NVIS compliance and is not in direct view. During NVIS applications the primary light source is turned off and light from the secondary source is directed toward the viewer through a light guide. Both light sources are mounted on the same plane.

Abstract: Light emitting diodes, display systems, and manufacturing methods are provided. In an embodiment, by way of example only, a light emitting diode (“LED”) include a die and a lens. The die is configured to emit wavelengths of light within a first predetermined spectral range. The lens is disposed on at least a portion of the die and is configured to filter the light emitted from the die such that a second predetermined spectral range is emitted from the LED.

Abstract: A lighting assembly topology that utilizes spectrum controlling materials to render the illumination compatible with night vision imaging systems. The lighting assembly can be used as either a general illumination source or can be used as a backlight for a transmissive display such as a liquid crystal display. The lighting assembly makes use of spectral filtering which is both transmissive and absorptive for specific spectral regions. The exit port of the lighting assembly is completely filtered with a red and near infrared reflective filter. The absorption of the near infrared spectrum to which NVIS are sensitive is reflected by the typical near infrared reflective filter covering the exit port and absorbed within the material lining the housing of the lighting assembly.

Abstract: A light source and a method for constructing a light source for a display device are provided. A first member having first and second sides and an opening therethrough is provided. A seal is positioned on the first side of the first member and on at least one side of the opening, the seal having a first thickness. A second member is positioned on the first side of the first member such that the seal is between the first and second members. A light emitting diode (LED) operable to emit light is positioned at least one of partially between the first and second members and partially within the opening. The first member is secured relative to the second member causing a force to be applied to the seal such that the thickness of the seal is reduced to a second thickness and substantially no light can propagate between the seal and the first and second members.

Abstract: A method and apparatus for replacing a fluorescent lighting system with a light emitting diode (LED) system. By connecting the LEDs in accordance with the described embodiment, the fluorescent lamp driving circuit can be reused without modification. The current rating of the LEDs must be equal to or less than the current output of the fluorescent lamp driving circuit. The LED replacement lamp may consist of as few as two LEDs but multiple LEDs may be used as long as the power consumed by the LEDs does not exceed the power rating of the fluorescent lamp driving circuit.

Abstract: A system and method for controlling backlight luminance of a display that includes a display region in which an image may be selectively rendered includes one or more devices for determining if operation in a reduced power mode is desired. If operation in the reduced power mode is not desired, the display region is at least substantially uniformly backlit. If operation in the reduced power mode is desired, only selected sections of the display region are selectively backlit.

Abstract: A lighting assembly topology that utilizes spectrum controlling materials to render the illumination compatible with night vision imaging systems. The lighting assembly can be used as either a general illumination source or can be used as a backlight for a transmissive display such as a liquid crystal display. The lighting assembly makes use of spectral filtering which is both transmissive and absorptive for specific spectral regions. The exit port of the lighting assembly is completely filtered with a red and near infrared reflective filter. The absorption of the near infrared spectrum to which NVIS are sensitive is reflected by the typical near infrared reflective filter covering the exit port and absorbed within the material lining the housing of the lighting assembly.

Abstract: A temperature sensor for the liquid crystal portion of a liquid crystal display assembly which includes a thin layer of transparent conductive material which is spread across the viewing area of the display. This layer of transparent conductive material can provide heat to warm up the display when a large voltage is put across it, and can also be used to measure liquid crystal temperature. It is known that the resistance of materials such as indium tin oxide (ITO) changes at a known rate with respect to temperature. By using this transparent layer of material in the stacked elements of a liquid crystal display assembly, an accurate reading of the liquid crystal temperature can be made.

Abstract: A method and apparatus for dimming a lamp in a backlight system of a display device, e.g., liquid crystal display ("LCD"), with a brightness dimming ratio of 10,000:1, which is a factor of 10 better than conventional dimming devices. A switch is provided in an inverter circuit, which has reactive components, that drives the lamp. The is positioned in the inverter circuit such that, when it is closed, the energy stored within the reactive components of the inverter circuit is discharged to ground. In one embodiment, the signals from the power supply are pulse width modulated.