Patents by Inventor Alan Bartlett
Alan Bartlett has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9025260Abstract: According to one embodiment of the present invention, a system for illuminating a target includes a light source configured to emit one or more light beams with a first divergence. The system further includes a lens separated from the light source. The lens is configured to substantially satisfy the sine condition without removing spherical aberrations from the one or more light beams. The lens is further configured to receive the one or more light beams with the first divergence. The lens is further configured to change the first divergence of the one or more light beams to a second divergence. The second divergence is less than the first divergence. The second divergence is greater than zero. The lens is further configured to transmit the one or more light beams with the second divergence.Type: GrantFiled: January 10, 2011Date of Patent: May 5, 2015Assignee: Texas Instruments IncorporatedInventors: Patrick Rene Destain, Terry Alan Bartlett
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Publication number: 20140204558Abstract: Apparatus for generating blue color illumination for use in a projection system a color wheel with segments of respective different color light emitting phosphors formed over light non-transmitting portions and at least one blue color generating segment. The blue color generating segment has cyan color light emitting phosphor formed over a light non-transmitting first portion and a second portion that transmits blue laser light through the wheel. A dichroic filter directs blue laser light from a light source onto the respective segments as the color wheel rotates. The light strikes the first and second portions of the blue color generating segment to generate blue light at a color point determined by both blue laser light and phosphor emitted cyan light.Type: ApplicationFiled: January 24, 2014Publication date: July 24, 2014Inventor: Terry Alan Bartlett
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Patent number: 8556431Abstract: An apparatus and method of reducing speckle in projection of images is provided that includes the elements or features of producing a first image and displacing the first image to produce a second image that will reduce speckle relating to the first image when the first image and the second image are displayed on a display medium.Type: GrantFiled: July 1, 2011Date of Patent: October 15, 2013Assignee: Texas Instruments IncorporatedInventors: Terry Alan Bartlett, John David Jackson
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Patent number: 8496352Abstract: A wavelength conversion device comprising a plurality of regions. Each region for absorbing radiant energy and emitting light having a characteristic dependent upon which region of the device emits the light.Type: GrantFiled: February 28, 2011Date of Patent: July 30, 2013Assignee: Texas Instruments IncorporatedInventor: Terry Alan Bartlett
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Patent number: 8305677Abstract: A system and method for operating an electronic device used in light processing. A method comprises altering a spatial relationship between a spatial light modulator (SLM) and a light incident on the SLM, shifting light modulator states of a first portion of light modulators to a second portion of light modulators, and placing a third portion of light modulators in the SLM into a performance degradation-reducing mode. The amount of shifting performed is proportional to the amount of change in the spatial relationship. The method allows for a change in light modulators used to modulate the light, thereby preventing the overuse of some of the light modulators, which may help to prevent degradation of the light modulators. The performance degradation reducing mode may help to further reduce or even reverse the performance degradation of the light modulators.Type: GrantFiled: September 15, 2011Date of Patent: November 6, 2012Assignee: Texas Instruments IncorporatedInventors: Terry Alan Bartlett, James Anthony Strain, Paul L. Rancuret
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Patent number: 8157388Abstract: A system and method for using an optical lightguide in a projection display system. A plurality of light sources provides a plurality of colored light to a lightguide. The lightguide may include alternating layers of a relatively high refractive index material and a relatively low refractive index material. In an embodiment, the layers of the lightguide are tapered. In another embodiment, the lightguide includes a light pipe having a lenticular array on the entrance face of the light pipe. Optionally, the light pipe may be tapered. The lightguide provides a line of light to a scanning element, which in turn redirects the light to a spatial light modulator.Type: GrantFiled: March 31, 2008Date of Patent: April 17, 2012Assignee: Texas Instruments IncorporatedInventors: Terry Alan Bartlett, Patrick Rene Destain
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Publication number: 20120008187Abstract: A system and method for operating an electronic device used in light processing. A method comprises altering a spatial relationship between a spatial light modulator (SLM) and a light incident on the SLM, shifting light modulator states of a first portion of light modulators to a second portion of light modulators, and placing a third portion of light modulators in the SLM into a performance degradation-reducing mode. The amount of shifting performed is proportional to the amount of change in the spatial relationship. The method allows for a change in light modulators used to modulate the light, thereby preventing the overuse of some of the light modulators, which may help to prevent degradation of the light modulators. The performance degradation reducing mode may help to further reduce or even reverse the performance degradation of the light modulators.Type: ApplicationFiled: September 15, 2011Publication date: January 12, 2012Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Terry Alan Bartlett, James Anthony Strain, Paul L. Rancuret
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Publication number: 20110261328Abstract: An apparatus and method of reducing speckle in projection of images is provided that includes the elements or features of producing a first image and displacing the first image to produce a second image that will reduce speckle relating to the first image when the first image and the second image are displayed on a display medium.Type: ApplicationFiled: July 1, 2011Publication date: October 27, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Terry Alan Bartlett, John David Jackson
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Patent number: 8031391Abstract: A system and method for operating an electronic device used in light processing. A method comprises altering a spatial relationship between a spatial light modulator (SLM) and a light incident on the SLM, shifting light modulator states of a first portion of light modulators to a second portion of light modulators, and placing a third portion of light modulators in the SLM into a performance degradation-reducing mode. The amount of shifting performed is proportional to the amount of change in the spatial relationship. The method allows for a change in light modulators used to modulate the light, thereby preventing the overuse of some of the light modulators, which may help to prevent degradation of the light modulators. The performance degradation reducing mode may help to further reduce or even reverse the performance degradation of the light modulators.Type: GrantFiled: April 16, 2008Date of Patent: October 4, 2011Assignee: Texas Instruments IncorporatedInventors: Terry Alan Bartlett, James Anthony Strain, Paul L. Rancuret
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Publication number: 20110211333Abstract: A wavelength conversion device comprising a plurality of regions. Each region for absorbing radiant energy and emitting light having a characteristic dependent upon which region of the device emits the light.Type: ApplicationFiled: February 28, 2011Publication date: September 1, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventor: Terry Alan Bartlett
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Patent number: 7972004Abstract: A system and method for uniform light generation in projection display systems. An illumination source comprises a light source to produce colored light, and a scrolling optics unit optically coupled to the light source, the scrolling optics unit configured to create lines of colored light from the colored light, and to scroll the lines of colored light along a direction orthogonal to a light path of the illumination source. The scrolling optics unit comprises a single light shaping diffuser to transform the colored light into the lines of colored light, an optical filter positioned in the light path after the light shaping diffuser, and a scrolling optics element positioned in the light path after the optical filter. The single light shaping diffuser is capable of simultaneously transforming colored light into lines of colored light having substantially uniform intensity to provide uniform illumination.Type: GrantFiled: April 18, 2008Date of Patent: July 5, 2011Assignee: Texas Instruments IncorporatedInventors: Terry Alan Bartlett, Paul L. Rancuret
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Patent number: 7972020Abstract: An apparatus and method of reducing speckle in projection of images is provided that includes the elements or features of producing a first image and displacing the first image to produce a second image that will reduce speckle relating to the first image when the first image and the second image are displayed on a display medium.Type: GrantFiled: December 29, 2006Date of Patent: July 5, 2011Assignee: Texas Instruments IncorporatedInventors: Terry Alan Bartlett, John David Jackson
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Publication number: 20110102903Abstract: According to one embodiment of the present invention, a system for illuminating a target includes a light source configured to emit one or more light beams with a first divergence. The system further includes a lens separated from the light source. The lens is configured to substantially satisfy the sine condition without removing spherical aberrations from the one or more light beams. The lens is further configured to receive the one or more light beams with the first divergence. The lens is further configured to change the first divergence of the one or more light beams to a second divergence. The second divergence is less than the first divergence. The second divergence is greater than zero. The lens is further configured to transmit the one or more light beams with the second divergence.Type: ApplicationFiled: January 10, 2011Publication date: May 5, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Patrick Rene Destain, Terry Alan Bartlett
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Patent number: 7869145Abstract: According to one embodiment of the present invention, a system for illuminating a target includes a light source configured to emit one or more light beams with a first divergence. The system further includes a lens separated from the light source. The lens is configured to substantially satisfy the sine condition without removing spherical aberrations from the one or more light beams. The lens is further configured to receive the one or more light beams with the first divergence. The lens is further configured to change the first divergence of the one or more light beams to a second divergence. The second divergence is less than the first divergence. The second divergence is greater than zero. The lens is further configured to transmit the one or more light beams with the second divergence.Type: GrantFiled: November 10, 2008Date of Patent: January 11, 2011Assignee: Texas Instruments IncorporatedInventors: Patrick Rene Destain, Terry Alan Bartlett
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Patent number: 7782521Abstract: A system and method for reducing visible speckle in images displayed using coherent light. In an embodiment, a system for displaying images includes a light source to produce coherent light, an array of light modulators optically coupled to the light source and positioned in a light path of the light source after the light source, and a controller electronically coupled to the array of light modulators and to the light source. The light source includes a coherent light source, and a first digital micromirror device (DMD) having a first plurality of micromirrors. The first DMD is optically coupled to the coherent light source and positioned in a light path of the coherent light source after the coherent light source. The first DMD directs coherent light by moving the micromirrors of the first plurality of micromirrors through a first range of tilt angles substantially continuously.Type: GrantFiled: May 31, 2007Date of Patent: August 24, 2010Assignee: Texas Instruments IncorporatedInventors: Sajjad Ali Khan, Terry Alan Bartlett
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Publication number: 20100118540Abstract: According to one embodiment of the present invention, a system for illuminating a target includes a light source configured to emit one or more light beams with a first divergence. The system further includes a lens separated from the light source. The lens is configured to substantially satisfy the sine condition without removing spherical aberrations from the one or more light beams. The lens is further configured to receive the one or more light beams with the first divergence. The lens is further configured to change the first divergence of the one or more light beams to a second divergence. The second divergence is less than the first divergence. The second divergence is greater than zero. The lens is further configured to transmit the one or more light beams with the second divergence.Type: ApplicationFiled: November 10, 2008Publication date: May 13, 2010Applicant: Texas Instruments IncorporatedInventors: Patrick Rene Destain, Terry Alan Bartlett
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Publication number: 20090262307Abstract: A system and method for uniform light generation in projection display systems. An illumination source comprises a light source to produce colored light, and a scrolling optics unit optically coupled to the light source, the scrolling optics unit configured to create lines of colored light from the colored light, and to scroll the lines of colored light along a direction orthogonal to a light path of the illumination source. The scrolling optics unit comprises a single light shaping diffuser to transform the colored light into the lines of colored light, an optical filter positioned in the light path after the light shaping diffuser, and a scrolling optics element positioned in the light path after the optical filter. The single light shaping diffuser is capable of simultaneously transforming colored light into lines of colored light having substantially uniform intensity to provide uniform illumination.Type: ApplicationFiled: April 18, 2008Publication date: October 22, 2009Inventors: Terry Alan Bartlett, Paul L. Rancuret
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Publication number: 20090262413Abstract: A system and method for operating an electronic device used in light processing. A method comprises altering a spatial relationship between a spatial light modulator (SLM) and a light incident on the SLM, shifting light modulator states of a first portion of light modulators to a second portion of light modulators, and placing a third portion of light modulators in the SLM into a performance degradation-reducing mode. The amount of shifting performed is proportional to the amount of change in the spatial relationship. The method allows for a change in light modulators used to modulate the light, thereby preventing the overuse of some of the light modulators, which may help to prevent degradation of the light modulators. The performance degradation reducing mode may help to further reduce or even reverse the performance degradation of the light modulators.Type: ApplicationFiled: April 16, 2008Publication date: October 22, 2009Inventors: Terry Alan Bartlett, James Anthony Strain, Paul L. Rancuret
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Publication number: 20090244499Abstract: A system and method for using an optical lightguide in a projection display system. A plurality of light sources provides a plurality of colored light to a lightguide. The lightguide may include alternating layers of a relatively high refractive index material and a relatively low refractive index material. In an embodiment, the layers of the lightguide are tapered. In another embodiment, the lightguide includes a light pipe having a lenticular array on the entrance face of the light pipe. Optionally, the light pipe may be tapered. The lightguide provides a line of light to a scanning element, which in turn redirects the light to a spatial light modulator.Type: ApplicationFiled: March 31, 2008Publication date: October 1, 2009Inventors: Terry Alan Bartlett, Patrick Rene Destain
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Publication number: 20090128786Abstract: An imaging system comprises a light valve having an array of light valve pixels. For processing grayscale/color images, each light valve pixel represents a discrete grayscale level. During image processing, desired grayscales can be accomplished by imaging the light valve pixels onto the target such that the perceived grayscale of each target pixel is a sum of grayscales represented by a plurality of light valve pixels.Type: ApplicationFiled: November 19, 2007Publication date: May 21, 2009Applicant: Texas Instruments IncorporatedInventors: David Foster Lieb, Jason Ryan Thompson, Terry Alan Bartlett, Steven Monroe Penn, Andrew Ian Russell