| Patent application number | Description | Published |
|---|
| 20080308824 | Thin Flash or Video Recording Light Using Low Profile Side Emitting LED - Very thin flash modules for cameras are described that do not appear as a point source of light to the illuminated subject. Therefore, the flash is less objectionable to the subject. In one embodiment, the light emitting surface area is about 5 mm×10 mm. Low profile, side-emitting LEDs optically coupled to solid light guides enable the flash module to be thinner than 2 mm. The flash module may also be continuously energized for video recording. The module is particularly useful for cell phone cameras and other thin cameras. | 12-18-2008 |
| 20090045416 | Optical Element Coupled to Low Profile Side Emitting LED - A low profile, side-emitting LED with one or more optical elements, such as a reflector or lens, optically coupled to each light emitting sidewall is described. In one embodiment, a reflector is used to redirect the light emitted from each sidewall to a forward direction, e.g., in a flash configuration. In another embodiment, a lens is used to collimate the side emitted light in the horizontal plane, e.g., for backlighting. Each entrance surface of the lens is positioned so that the bottom edge is at or below the bottom of the light emitting sidewall so that the base of the lens does not block light that is emitted by the LED. | 02-19-2009 |
| 20090045420 | Backlight Including Side-Emitting Semiconductor Light Emitting Devices - Individual side-emitting LEDs are separately positioned in a waveguide, or mounted together on a flexible mount then positioned together in a waveguide. As a result, the gap between each LED and the waveguide can be small, which may improve coupling of light from the LED into the waveguide. Since the LEDs are separately connected to the waveguide, or mounted on a flexible mount, stress to individual LEDs resulting from changes in the shape of the waveguide is reduced. | 02-19-2009 |
| 20090046479 | Thin Backlight Using Low Profile Side Emitting LED - Low profile, side-emitting LEDs are described. The LEDs are used in very thin backlights for backlighting an LCD. In one embodiment, the backlight comprises a solid transparent waveguide with at least one opening in the waveguide containing an LED proximate to one edge. To smooth out a clover-shaped or batwing brightness profile inherently generated by a rectangular side-emitting LED within a smooth-sided rectangular opening in the waveguide, depending on the orientation of the LED, the sidewalls of the opening are made to have varying angles along the length of each sidewall to vary the refraction angle of light along the sidewall. Additionally, if a plurality of LEDs are used in the backlight, the orientations of the openings alternate to create a more uniform brightness profile in the waveguide. | 02-19-2009 |
| 20110018017 | LED WITH MOLDED REFLECTIVE SIDEWALL COATING - A submount wafer, having mounted on it an array of LEDs with a phosphor layer, is positioned with respect to a mold having an array of indentions. A mixture of silicone and 10%-50%, by weight, TiO | 01-27-2011 |
| 20110062471 | LED MODULE WITH HIGH INDEX LENS - An array of housings with housing bodies and lenses is molded, or an array of housing bodies is molded and bonded with lenses to form an array of housings with housing bodies and lenses. Light-emitting diodes (LEDs) are attached to the housings in the array. An array of metal pads may be bonded to the back of the array or insert molded with the housing array to form bond pads on the back of the housings. The array is singulated to form individual LED modules. | 03-17-2011 |
