Abstract: In one embodiment, a light-emitting device having a reflector, a light source die, a light scattering member, a first encapsulant, and a second encapsulant is disclosed. The light scattering member may be configured to scatter light emitted from the light source die, before the light being transmitted into the second encapsulant where a lens surface is configured to collimate the light towards a first direction. The light scattering member may be light-scattering particles distributed uniformly within the first encapsulant, a roughened surface of the first encapsulant, and a deposited light scattering layer on the first encapsulant, air bubbles, or a substantially flat layer. The light scattering member may be provided outside a reflector cup.

Abstract: In an embodiment, the invention provides a method of color control in a backlighting system comprising a plurality of light sources, a plurality of color sensors, a plurality of PWM controllers, and a video input for receiving video data. The plurality of light sources is activated during a first operative mode to produce white light. The plurality of light sources is controlled during a second operative mode to produce white light.

Abstract: In an embodiment, the invention provides a method of color control in a backlighting system comprising a plurality of light sources, a plurality of color sensors, a plurality of PWM controllers, and a video input for receiving video data. The plurality of light sources is activated during a first operative mode to produce white light. The plurality of light sources is controlled during a second operative mode to produce white light.

Abstract: A color printing system includes a color monitor and printer having different color gamuts. A color chart is printed out by the printer. A light source outputs light to the color printer and a color sensor detects the light reflected from the color chart printout. The sensor outputs sensor color values representing the light received from the color chart printout. A print-preview matrix is calculated from the monitor color chart values and the sensor color values. An image is input to and displayed by the monitor and is converted into a print-preview image using the print-preview matrix. The monitor displays the monitor image and the print-preview image before printing the image.

Abstract: A meter for measuring the turbidity of a fluid includes a light source for directing a light beam through a fluid under test towards a reflective surface and a sensor for detecting light reflected from the reflective surface and passing back through the fluid under test. The meter outputs a signal indicative of the turbidity of the fluid under test.