Patent application number | Description | Published |
20080298080 | FLICKERLESS LIGHT SOURCE - A flickerless light source comprising a transparent or semitransparent diffuser, a lightpipe with a patterned surface inside the diffuser, and an LED light source attached to each end of the lightpipe is disclosed. The patterned surface of the lightpipe diffuses or reflects light emitted by the LED light sources and through the lightpipe to provide a light with uniform brightness and intensity. The lightpipe is coated with a thin layer of visible-light transparent material which is doped with organic dye molecules. The organic dye has strong ultraviolet light absorption characteristics. By changing the doping concentration of the dye molecules the coating can become total opaque or semi-transparent to certain wavelengths and selective wavelength conversion is obtained. In this way light color, brightness, and intensity can be varied or controlled. | 12-04-2008 |
20080304280 | FLICKERLESS LIGHT SOURCE - A flickerless light source comprising at least two lightpipes with patterned surfaces, a single sided LED light source attached to one end of each lightpipes, and a coupler for holding the lighpipes together. The coupler comprises a hollow sleeve, a coupler with a reflective face, or a coupler with a dual sided LED light source is disclosed. The patterned surface of the lightpipes diffuse or reflect light emitted by the single and dual LED light sources and through the lightpipes to provide a light with uniform brightness and intensity. The coupler with reflective face reflects light back into the lighpipes. The coupler with the dual sided LED light source in addition to the single sided light sources emits light into the lightpipes. | 12-11-2008 |
20090009994 | FLICKERLESS LIGHT SOURCE - A flickerless light source comprising a transparent or semitransparent diffuser, at least two lightpipes with patterned surfaces inside the diffuser, a single sided LED light source attached to each end of the diffuser, and a dual sided LED light source connecting the lightpipes together is disclosed. The patterned surface of the lightpipes diffuse or reflect light emitted by the single and dual LED light sources and through the lightpipes to provide a light with uniform brightness and intensity. The lightpipes are coated with a thin layer of visible-light transparent material which is doped with organic dye molecules. The organic dye has strong ultraviolet light absorption characteristics. By changing the doping concentration of the dye molecules the coating can become totally opaque or semi-transparent to certain wavelengths and selective wavelength conversion is obtained. In this way light color, brightness, and intensity can be varied or controlled. | 01-08-2009 |
20090141515 | FLICKERLESS BACKLIGHT FOR A DISPLAY PANEL - A backlight assembly for a display panel comprising a diffuser, at least one lightpipe with a patterned surface inside the diffuser, a single sided LED light source attached to each end of the diffuser is disclosed. When a plurality of lightpipes is utilized a dual sided LED light source connects the lightpipes together. The patterned surface of the lightpipes diffuse or reflect light emitted by the LED light sources to provide a light with uniform brightness and intensity. The lightpipes are coated with a thin layer of visible-light transparent material which is doped with organic dye molecules. The organic dye has strong ultraviolet light absorption characteristics. By changing the doping concentration of the dye molecules the coating can become totally opaque or semi-transparent to certain wavelengths and selective wavelength conversion is obtained. In this way light color, brightness, and intensity can be varied or controlled. | 06-04-2009 |
20090290352 | HIGH POWERED LIGHT EMITING DIODE LINEAR LIGHTING WITH ENHANCED UNIFORMITY AND ILLUMINATION - A light emitting diode linear light which is high powered and has enhanced uniformity and illumination and is safe to humans, environmentally friendly, and possesses an extremely long lifetime is disclosed. The LED lighting comprises a polygonal light pipe, a light reflector panel, two LED packages, two LED PCBs, a plurality of heatsinks, a plurality of heat pipe assemblies, a protective housing, a back cover, and a diffuser cover. The polygonal light pipe comprises a transparent or semitransparent material. A patterned surface on the light emitting surface of the light pipe diffuses the emitted light. A patterned surface on the surface of the light pipe opposite the light emitting surface reflects light. The plurality of heat pipe assemblies comprise heatsinks and heat pipes. The heat pipes are hollow pipes that are filled with a liquid such as water or coolant and cooperate with the heatsinks to dissipate heat. | 11-26-2009 |
20100002461 | LIGHT GUIDE BAR WITH PATTERNED SURFACE TO ENHANCE LIGHT UNIFORMITY AND INTENSITY - A light guide bar with a patterned surface for a flicker free light source comprising a light emitting diode (LED) light source disposed on each end of the light guide bar is disclosed. A light diffusing pattern is disposed on a light emitting surface. The light diffusing pattern comprises a plurality of notches that are smallest closest to the LED light sources and largest in the center of the light guide bar. A light reflecting pattern is disposed on a light reflecting surface opposite the light diffusing pattern on the light emitting surface. Light emitted by the LED light sources enters the light guide bar through the ends. The light travels through the light guide bar at various angles and is reflected by the light reflecting pattern on the light reflecting surface. The reflected light is then emitted through the light diffusing pattern on the light emitting surface. | 01-07-2010 |
20100046081 | SYMETRICAL LENS ARRAY WITH IMPROVED DEPTH OF FIELD, ENHANCED UNIFORMITY, AND BRIGHTNESS - A symmetrical lens array comprising two identical covers, two identical lens sections, and a middle holder. Each lens section comprises a plurality of lenses disposed on the top and bottom of the lens section. The lens array is assembled with the middle holder positioned between the two lens sections. The two covers are positioned one cover on the top of the upper lens section and one cover positioned on the bottom of the lower lens section. Mating elements of the covers, lens sections, and the middle holder mate to allow the components to attach and be held together. Since each lens section is identical and each cover is identical the same lens section tooling is used for all lens sections and the same cover tooling is used for all covers. | 02-25-2010 |
20100073961 | LIGHT GUIDE WITH DUAL REFLECTING SURFACES TO MAXIMIZE LIGHT REFLECTION AND ENHANCE UNIFORMITY OF EMITTED LIGHT - A light guide for a linear light source comprising dual light reflecting surfaces, a v-shaped light reflecting surface for maximizing light output and an asymmetrical saw-toothed light reflecting surface for enhancing the uniformity of emitted light is disclosed. The v-shaped light reflecting surface comprises two light reflecting surfaces at 90°. The asymmetrical saw-toothed light reflecting surface comprises notches and ridges with increasing gradient from the light entry end of the light guide to the opposite end. The asymmetrical saw-tooth has a constant pitch and constant saw-tooth angle. The light guide further comprises an apex cut-off surface and a bottom cut-off surface at the light entry end of the light guide to prevent light loss at the light entry point further enhancing the light channeling performance. | 03-25-2010 |
20100124063 | MINITURIZED LINEAR LIGHT SOURCE SUB-MODULE FOR VARIOUS FORMAT MAIN MODULES - A miniaturized linear light source sub-module comprising a symmetrical lens array, a light guide bar with dual reflecting surfaces, at least one light emitting diode light source, and a sub-module housing is disclosed. The symmetrical lens array comprises two identical covers, two identical lens sections, and a middle holder. Each lens section comprises a plurality of lenses disposed on the top and bottom of the lens section. The dual reflecting surface light guide comprises a light emitting surface, a v-shaped light reflecting surface, an asymmetrical saw-toothed light reflecting surface, an apex cut-off surface, and a bottom cut-off surface. At least one light emitting diode light source is connected to an end of the dual reflecting surface light guide. The sub-module housing holds the lens array assembly, the dual reflecting surface light guide, and the at least one light emitting diode light source to form the miniaturized linear light source sub-module. | 05-20-2010 |
20100254016 | SYMETRICAL LENS ARRAY WITH IMPROVED DEPTH OF FIELD, ENHANCED UNIFORMITY, AND BRIGHTNESS - A symmetrical lens array comprising two identical covers, two identical lens sections, and a middle holder. Each lens section comprises a plurality of lenses disposed on the top and bottom of the lens section. The lens array is assembled with the middle holder positioned between the two lens sections. The two covers are positioned one cover on the top of the upper lens section and one cover positioned on the bottom of the lower lens section. Mating elements of the covers, lens sections, and the middle holder mate to allow the components to attach and be held together. Since each lens section is identical and each cover is identical the same lens section tooling is used for all lens sections and the same cover tooling is used for all covers. | 10-07-2010 |
20100290134 | ABBE PRISM LENS WITH IMPROVED FOCUS AND REDUCED FLAIR - An Abbe prism lens and lens array are disclosed. The lens comprises front lenses disposed on a front surface of the Abbe prism, rear lenses disposed on a rear surface of the Abbe prism, a front bottom reflecting surface, a rear bottom reflecting surface, a left top reflecting surface, and a right top reflecting surface. An aperture cover is positioned over the front surface of the Abbe prism lens and a field cover is positioned over the rear surface of the Abbe prism lens. The aperture cover comprises aperture holes encircling the aspherical front lenses. The field cover comprises field holes encircling the aspherical rear lenses. Light enters the Abbe prism lens and reflects off the front bottom reflecting surface, reflects off the left top reflecting surface and the right top reflecting surface, reflects off the rear bottom reflecting surface, and exits the rear lens of the Abbe prism lens. | 11-18-2010 |
20100321785 | ABBE PRISM LENS WITH IMPROVED FOCUS AND REDUCED FLAIR - An Abbe prism lens and lens array are disclosed. The lens comprises front lenses disposed on a front surface of the Abbe prism, rear lenses disposed on a rear surface of the Abbe prism, a front bottom reflecting surface, a rear bottom reflecting surface, a left top reflecting surface, and a right top reflecting surface. An aperture cover is positioned over the front surface of the Abbe prism lens and a field cover is positioned over the rear surface of the Abbe prism lens. The aperture cover comprises aperture holes encircling the aspherical front lenses. The field cover comprises field holes encircling the aspherical rear lenses. Light enters the Abbe prism lens and reflects off the front bottom reflecting surface, reflects off the left top reflecting surface and the right top reflecting surface, reflects off the rear bottom reflecting surface, and exits the rear lens of the Abbe prism lens. | 12-23-2010 |