Patent application number | Description | Published |
20080316439 | ILLUMINATION SYSTEM AND PROJECTION SYSTEM INCORPORATING THE SAME - An illumination system and a projection system incorporating same are disclosed. The illumination system includes a two-dimensional array of independently operable light sources. Each light source illuminates substantially the entire active area of a pixelated optical light modulator. Each light source emits light in different emission directions. Each emission direction is directed to a respective location in the active area. Each pixel in the active area is illuminated by an incident cone of light from the two-dimensional array of independently operable light sources. The cone has a cone angle and includes at least one light ray from each light source. The cone angle of at least one such cone of light can be controlled by adjusting the intensity of one or more of the independently operable light sources. | 12-25-2008 |
20090008573 | LIGHT EMITTING DIODE ILLUMINATION SYSTEM - In various embodiments of the invention, a unique construction for Light Emitting Diodes (LEDs) with prisms and dyes and other optical elements can be used to generate a variety of light sources with different emission spectra. In an embodiment of the invention, reflected light can be redirected outward. In another embodiment of the invention, a white LED based light uses a blue LED and associated optics elements, including a high index glass prism or rod, a layer of dyed florescent polymer and an extraction-enhancing optical element or lens, such that all of the light emitted from with the dye layer can be directed outward. | 01-08-2009 |
20090040465 | POLARIZED, LED-BASED ILLUMINATION SOURCE - An illumination source includes a number of light emitting diodes (LEDs) operating at a first wavelength. Light from the LEDs illuminates a phosphor material that generates light at a second wavelength. A reflective polarizer transmits light at the second wavelength in a first polarization state and reflects light at the second wavelength in a second polarization state orthogonal to the first polarization state. The light at the second wavelength reflected by the reflective polarizer is directed back towards the phosphor material without an increase in angular range. In some embodiments the LEDs, having a conformal layer of phosphor material, are attached directly to the first surface of a liquid cooled plate. A liquid coolant contacts a second surface of the plate. | 02-12-2009 |
20090040754 | LIGHT EMITTING DIODE ILLUMINATION SYSTEM - In various embodiments of the invention, a unique construction for Light Emitting Diodes (LEDs) with at least one luminescent rod and extracting optical elements is used to generate a variety of high brightness light sources with different emission spectra. In an embodiment of the invention, forced air cooling is used to cool the luminescent rod. In an embodiment of the invention, totally internal reflected light can be redirected outward and refocused. In another embodiment of the invention, light emitted by the luminescent rod is out-coupled for use in a variety of applications. In various embodiments of the invention, a plurality of independent narrow band colors can be coaxially combined. | 02-12-2009 |
20100187440 | LIGHTING DESIGN OF HIGH QUALITY BIOMEDICAL DEVICES - The invention relates to a plurality of light sources to power a variety of applications including microarray readers, microplate scanners, microfluidic analyzers, sensors, sequencers, Q-PCR and a host of other bioanalytical tools that drive today's commercial, academic and clinical biotech labs. | 07-29-2010 |
20100220297 | ILLUMINATION SYSTEM AND PROJECTION SYSTEM INCORPORATING SAME - An illumination system and a projection system incorporating same are disclosed. The illumination system includes a two-dimensional array of independently operable light sources. Each light source illuminates substantially the entire active area of a pixelated optical light modulator. Each light source emits light in different emission directions. Each emission direction is directed to a respective location in the active area. Each pixel in the active area is illuminated by an incident cone of light from the two-dimensional array of independently operable light sources. The cone has a cone angle and includes at least one light ray from each light source. The cone angle of at least one such cone of light can be controlled by adjusting the intensity of one or more of the independently operable light sources. | 09-02-2010 |
20110058145 | POLARIZED, LED-BASED ILLUMINATION SOURCE - An illumination source includes a number of light emitting diodes (LEDs) operating at a first wavelength. Light from the LEDs illuminates a phosphor material that generates light at a second wavelength. A reflective polarizer transmits light at the second wavelength in a first polarization state and reflects light at the second wavelength in a second polarization state orthogonal to the first polarization state. The light at the second wavelength reflected by the reflective polarizer is directed back towards the phosphor material without an increase in angular range. In some embodiments the LEDs, having a conformal layer of phosphor material, are attached directly to the first surface of a liquid cooled plate. A liquid coolant contacts a second surface of the plate. | 03-10-2011 |
20110116261 | LIGHT EMITTING DIODE ILLUMINATION SYSTEM - In various embodiments of the invention, a unique construction for Light Emitting Diodes (LEDs) with at least one luminescent rod and extracting optical elements is used to generate a variety of high brightness light sources with different emission spectra. In an embodiment of the invention, forced air cooling is used to cool the luminescent rod. In an embodiment of the invention, totally internal reflected light can be redirected outward and refocused. In another embodiment of the invention, light emitted by the luminescent rod is out-coupled for use in a variety of applications. In various embodiments of the invention, a plurality of independent narrow band colors can be coaxially combined. | 05-19-2011 |
20120025220 | POLARIZED, LED-BASED ILLUMINATION SOURCE - An illumination source includes a number of light emitting diodes (LEDs) operating at a first wavelength. Light from the LEDs illuminates a phosphor material that generates light at a second wavelength. A reflective polarizer transmits light at the second wavelength in a first polarization state and reflects light at the second wavelength in a second polarization state orthogonal to the first polarization state. The light at the second wavelength reflected by the reflective polarizer is directed back towards the phosphor material without an increase in angular range. In some embodiments the LEDs, having a conformal layer of phosphor material, are attached directly to the first surface of a liquid cooled plate. A liquid coolant contacts a second surface of the plate. | 02-02-2012 |
20120168643 | LIGHTING DESIGN OF HIGH QUALITY BIOMEDICAL DEVICES - The invention relates to a plurality of light sources to power a variety of applications including microarray readers, microplate scanners, microfluidic analyzers, sensors, sequencers, Q-PCR and a host of other bioanalytical tools that drive today's commercial, academic and clinical biotech labs. | 07-05-2012 |
20120235061 | LIGHTING DESIGN OF HIGH QUALITY BIOMEDICAL DEVICES - The invention relates to a plurality of light sources to power a variety of applications including microarray readers, microplate scanners, microfluidic analyzers, sensors, sequencers, Q-PCR and a host of other bioanalytical tools that drive today's commercial, academic and clinical biotech labs. | 09-20-2012 |
20120236585 | LIGHTING DESIGN OF HIGH QUALITY BIOMEDICAL DEVICES - The invention relates to a plurality of light sources to power a variety of applications including microarray readers, microplate scanners, microfluidic analyzers, sensors, sequencers, Q-PCR and a host of other bioanalytical tools that drive today's commercial, academic and clinical biotech labs. | 09-20-2012 |
20120307514 | LIGHT EMITTING DIODE ILLUMINATION SYSTEM - In various embodiments of the invention, a unique construction for Light Emitting Diodes (LEDs) with at least one luminescent rod and extracting optical elements is used to generate a variety of high brightness light sources with different emission spectra. In an embodiment of the invention, forced air cooling is used to cool the luminescent rod. In an embodiment of the invention, totally internal reflected light can be redirected outward and refocused. In another embodiment of the invention, light emitted by the luminescent rod is out-coupled for use in a variety of applications. In various embodiments of the invention, a plurality of independent narrow band colors can be coaxially combined. | 12-06-2012 |
20130099135 | LIGHTING DESIGN OF HIGH QUALITY BIOMEDICAL DEVICES - The invention relates to a plurality of light sources to power a variety of applications including microarray readers, microplate scanners, microfluidic analyzers, sensors, sequencers, Q-PCR and a host of other bioanalytical tools that drive today's commercial, academic and clinical biotech labs. | 04-25-2013 |
20130284943 | LIGHT EMITTING DIODE ILLUMINATION SYSTEM - The present invention provides a light engine having four LED light sources in combination with one or more laser light sources. A combination of collimators, bandpass filters, dichroic mirrors, and other elements is operative to direct light from the light sources onto a main optical axis from where it may be focused into a light guide for transport to a instrument or device. Particular embodiments of the invention provide for computer control, intensity control, color control, and light source modulation. The light engine provides light suitable for applications in microscopy, endoscopy, and/or bioanalytical instrumentation. | 10-31-2013 |
20140119006 | LIGHT EMITTING DIODE ILLUMINATION SYSTEM - The present invention provides a light engine having four light sources. A combination of collimators, bandpass filters, dichroic mirrors, and other elements is operative to direct light from the light sources onto a main optical axis from where it may be focused into a light guide for transport to an instrument or device. Particular embodiments of the invention provide for computer control, intensity control, color control, and light source modulation. Additional embodiments include particular light sources including light pipes and lasers. The light engine provides white light having a high color rendering index and suitable for applications in microscopy, endoscopy, and/or bioanalytical instrumentation. | 05-01-2014 |