Patents by Inventor Patrick R. Destain
Patrick R. Destain 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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Publication number: 20110099864Abstract: A backlight is disclosed and includes a visible light transmissive body primarily propagating light by TIR with a light input surface and a light output surface and a light guide portion and a light input portion. The light guide portion has a light reflection surface and a light emission surface. The light input portion has opposing side surfaces that are not parallel. One of the opposing surfaces is co-planar with either the light emission surface or the light reflection surface. A light source is disposed adjacent to the light input surface. The light source emits light into the light input portion. A reflective layer is disposed adjacent to or on the opposing side surfaces.Type: ApplicationFiled: January 14, 2011Publication date: May 5, 2011Inventors: William J. Bryan, John C. Schultz, Michael A. Meis, Patrick R. Destain
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Patent number: 7901083Abstract: A projection subsystem includes a light engine that provides a collection lens, a collimator and at least one solid state light emitter. A projection lens assembly receives the image and provides a projection beam having a luminous flux level. The projection subsystem has a portability efficacy.Type: GrantFiled: July 31, 2007Date of Patent: March 8, 2011Assignee: 3M Innovative Properties CompanyInventors: Patrick R. Destain, Jennifer L. Grace, John E. Duncan, Tomasz A. Pol, William E. Phillips, III, Michael W. O'Keefe, Alexander Glinski, Stephen J. Willett
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Patent number: 7857463Abstract: A micro-mirror based projection display system in an enclosure with minimum chin and depth measurements is disclosed. A solid-state laser light source generates light of multiple primary colors that is modulated by a digital micro-mirror device. The projection optics of the system include a telecentric rear group of glass lenses with spherical surfaces, followed by a pair of aspheric lenses formed of plastic. A folding mirror is disposed between the aspheric lenses, to reduce the depth of the enclosure, and an aspheric mirror projects the image onto a TIR Fresnel projection screen. The aspheric lenses are magnifying, to reduce the magnification required of the aspheric mirror, and the aspheric lenses and mirror are clipped to reduce enclosure volume.Type: GrantFiled: March 29, 2007Date of Patent: December 28, 2010Assignee: Texas Instruments IncorporatedInventor: Patrick R. Destain
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Patent number: 7826135Abstract: A front-projection screen that includes a prismatic film that comprises an outside surface of the screen. The film includes parallel prismatic grooved lines. Each of the lines have a draft surface, a groove surface, and, each of the lines are located on a first side of a base portion of the film. The screen also includes a diffuser-reflector layer adjacent to a second opposite side of the base portion. The outside surface of the screen is oriented to receive an incoming light exclusively through the draft surfaces of the lines. The incoming light has an angle of incidence of about 60 degrees or greater with respect to the normal of the outside surface. A draft-base angle between the base portion and the draft surface is about 75 degrees or greater.Type: GrantFiled: October 20, 2008Date of Patent: November 2, 2010Assignee: Texas Instruments IncorporatedInventors: Patrick R. Destain, James F. Hallas
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Patent number: 7798678Abstract: An LED light source includes an LED emitter and an encapsulant that at least partially surrounds the emitter. The encapsulant includes an inner lens and an outer lens, the inner lens having a refractive index less than, and in some cases about 70 to 80% of, the refractive index of the outer lens. The inner lens and outer lens can contact each other along a curved surface, and in some cases the inner lens is substantially plano-convex and the outer lens is meniscus. The inner lens produces a first virtual image of the emitter and the outer lens produces a second virtual image, and the first virtual image is disposed between the emitter and the second virtual image. The LED light source is capable of providing uniform illumination in a compact space.Type: GrantFiled: December 30, 2005Date of Patent: September 21, 2010Assignee: 3M Innovative Properties CompanyInventor: Patrick R. Destain
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Patent number: 7724432Abstract: Various embodiments of a rear-projection screen, a method of rear-projection collimation and a projection video display (PVD) system. In one embodiment, a rear-projection screen includes: (1) a total-internal-reflection (TIR) fresnel lens configured to aim light received at an incidence angle toward a central axis of the TIR fresnel lens at a convergence angle and (2) a refractive fresnel lens configured to refract the light received from the TIR fresnel lens and at least to reduce the convergence angle.Type: GrantFiled: November 30, 2007Date of Patent: May 25, 2010Assignee: Texas Instruments IncorporatedInventors: Patrick R. Destain, Steven E. Smith
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Patent number: 7717599Abstract: A light source module is provided comprising an emitter having at least one light emitting surface and an at least partially hollow integrating optic mounted over the emitting surface; where the index of refraction within the hollowed area is less then the index of the subsequent medium along the optical path. The integrating optic has a proximal end facing the emitting surface and a distal end facing away from the emitting surface. The distal end of the integrating optic is flat and has a rectangular aspect ratio which can differ from the aspect ratio of the emitter. One or more optical films and/or an optical component such as a collection lens can be adhered to the distal end of the integrating optic.Type: GrantFiled: July 31, 2007Date of Patent: May 18, 2010Assignee: 3M Innovative Properties CompanyInventors: Jennifer L. Grace, Patrick R. Destain, William E. Phillips, III
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Publication number: 20100097699Abstract: A front-projection screen that includes a prismatic film that comprises an outside surface of the screen. The film includes parallel prismatic grooved lines. Each of the lines have a draft surface, a groove surface, and, each of the lines are located on a first side of a base portion of the film. The screen also includes a diffuser-reflector layer adjacent to a second opposite side of the base portion. The outside surface of the screen is oriented to receive an incoming light exclusively through the draft surfaces of the lines. The incoming light has an angle of incidence of about 60 degrees or greater with respect to the normal of the outside surface. A draft-base angle between the base portion and the draft surface is about 75 degrees or greater.Type: ApplicationFiled: October 20, 2008Publication date: April 22, 2010Applicant: Texas Instruments IncorporatedInventors: Patrick R. Destain, James F. Hallas
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Patent number: 7660509Abstract: A backlight is disclosed and includes a visible light transmissive body primarily propagating light by TIR with a light input surface and a light output surface and a light guide portion and a light input portion. The light guide portion has a light reflection surface and a light emission surface. The light input portion has opposing side surfaces that are not parallel. One of the opposing surfaces is co-planar with either the light emission surface or the light reflection surface. A light source is disposed adjacent to the light input surface. The light source emits light into the light input portion. A reflective layer is disposed adjacent to or on the opposing side surfaces.Type: GrantFiled: May 24, 2006Date of Patent: February 9, 2010Assignee: 3M Innovative Properties CompanyInventors: William J. Bryan, John C. Schultz, Michael A. Meis, Patrick R. Destain
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Publication number: 20090273948Abstract: A backlight is disclosed and includes a visible light transmissive body primarily propagating light by TIR with a light input surface and a light output surface and a light guide portion and a light input portion. The light guide portion has a light reflection surface and a light emission surface. The light input portion has opposing side surfaces that are not parallel. One of the opposing surfaces is co-planar with either the light emission surface or the light reflection surface. A light source is disposed adjacent to the light input surface. The light source emits light into the light input portion. A reflective layer is disposed adjacent to or on the opposing side surfaces.Type: ApplicationFiled: July 8, 2009Publication date: November 5, 2009Inventors: William J. Bryan, John C. Schultz, Michael A. Meis, Patrick R. Destain
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Patent number: 7607814Abstract: A backlight includes a visible light transmissive body having a light guide portion and a light input portion. The visible light transmissive body primarily propagates light by TIR and includes a light input surface and a light output surface. The light guide portion has a light reflection surface and a light emission surface. The light input portion has opposing side surfaces that are not parallel. A light source is disposed adjacent to the light input surface and emits light into the light input portion. A specularly reflective layer is disposed adjacent to but not in intimate contact with the opposing side surfaces and reflects more than 80% of visible light incident on the specularly reflective layer.Type: GrantFiled: May 24, 2006Date of Patent: October 27, 2009Assignee: 3M Innovative Properties CompanyInventor: Patrick R. Destain
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Publication number: 20090116214Abstract: A light engine has a light source front surface that emits non-collimated light. A collection lens collects the non-collimated light and provides incompletely collimated light. A collimating lens receives the incompletely collimated light and provides a collimated image. A non-orthogonal polarizing filter receives the collimated image and passes a polarized portion of the collimated image as a direct component of the polarized light engine image. The non-orthogonal polarizing filter reflects a recycled image back to the front surface. The non-orthogonal shape of the polarizing filter is selected according to the pattern of light on the light source front surface.Type: ApplicationFiled: July 2, 2007Publication date: May 7, 2009Inventors: William E. Phillips, III, Ronald E. English, JR., Patrick R. Destain
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Patent number: 7529029Abstract: A polarizing beam splitter that includes at least one prism, and a reflective polarizing film. The prism comprises a first polymeric material, and has at least one curved outer surface and an incident surface, where the reflective polarizing film is disposed adjacent the incident surface.Type: GrantFiled: June 28, 2006Date of Patent: May 5, 2009Assignee: 3M Innovative Properties CompanyInventors: John E. Duncan, Michael W. O'Keefe, William E. Phillips, III, Jiaying Ma, Patrick R. Destain
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Publication number: 20090097112Abstract: Various embodiments of a rear-projection screen, a method of rear-projection collimation and a projection video display (PVD) system. In one embodiment, a rear-projection screen includes: (1) a total-internal-reflection (TIR) fresnel lens configured to aim light received at an incidence angle toward a central axis of the TIR fresnel lens at a convergence angle and (2) a refractive fresnel lens configured to refract the light received from the TIR fresnel lens and at least to reduce the convergence angle.Type: ApplicationFiled: November 30, 2007Publication date: April 16, 2009Applicant: Texas Instruments IncorporatedInventors: Patrick R. Destain, Steven E. Smith
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Publication number: 20090073527Abstract: A system for, and method of, generating multicolor scan lines and a multicolor projection video display (PVD) incorporating the system or the method. In one embodiment, the system includes: (1) light sources that emit light of different colors at different emission locations and (2) first and second lenses having lenticular arrays associated therewith and configured to receive the light of the different colors and generate multicolor scan lines therefrom, the emission locations separated by different distances from the first lens.Type: ApplicationFiled: November 30, 2007Publication date: March 19, 2009Applicant: Texas Instruments IncorporatedInventor: Patrick R. Destain
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Publication number: 20090016081Abstract: A backlight includes a visible light transmissive body having a light guide portion and a light input portion. The visible light transmissive body primarily propagates light by TIR and includes a light input surface and a light output surface. The light guide portion has a light reflection surface and a light emission surface. The light input portion has opposing side surfaces that are not parallel. A light source is disposed adjacent to the light input surface and emits light into the light input portion. A specularly reflective layer is disposed adjacent to but not in intimate contact with the opposing side surfaces and reflects more than 80% of visible light incident on the specularly reflective layer.Type: ApplicationFiled: September 23, 2008Publication date: January 15, 2009Inventor: PATRICK R. DESTAIN
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Publication number: 20090009730Abstract: A digital micromirror projection display system is disclosed in which “off” pixel light is recaptured and recycled. In the disclosed system, a digital micromirror device directs incident light for “on” pixels in the image to be displayed through projection lenses to a projection screen. The digital micromirror device directs incident light for “off” pixels back toward the light source for recapture by a light integrator. Both the incident and projected light can pass through a rear group of projection lenses, with the first projection lens being disposed near the digital micromirror device. A mirror directs the incident light toward the digital micromirror device, and the “off” pixel light from the digital micromirror device toward the light integrator. As a result, “off” pixel light can be recycled without degrading image contrast, in a manner that can place fast projection lenses close to the digital micromirror device to save cost.Type: ApplicationFiled: August 30, 2007Publication date: January 8, 2009Applicant: TEXAS INSTRUMENTS INCORPORATEDInventor: Patrick R. Destain
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Publication number: 20080239251Abstract: A micro-mirror based projection display system in an enclosure with minimum chin and depth measurements is disclosed. A solid-state laser light source generates light of multiple primary colors that is modulated by a digital micro-mirror device. The projection optics of the system include a telecentric rear group of glass lenses with spherical surfaces, followed by a pair of aspheric lenses formed of plastic. A folding mirror is disposed between the aspheric lenses, to reduce the depth of the enclosure, and an aspheric mirror projects the image onto a TIR Fresnel projection screen. The aspheric lenses are magnifying, to reduce the magnification required of the aspheric mirror, and the aspheric lenses and mirror are clipped to reduce enclosure volume.Type: ApplicationFiled: March 29, 2007Publication date: October 2, 2008Applicant: TEXAS INSTRUMENTS INCORPORATEDInventor: Patrick R. Destain
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Patent number: 7369320Abstract: A projection system having a prescribed relationship between the condenser and the projection lens is disclosed, where an imager gate normally coinciding with a projection object plane is between and spaced away from a condenser back focal plane and a condenser image plane. The condenser images an extended source onto the condenser image plane. A pixilated panel or film defining a graphic image is located at the imager gate. The magnification of the condenser is chosen so the image of the source is essentially the same size as the pixilated panel. Positioning the imager gate away from the condenser image plane provides blurring of any brightness non-uniformities across the area of the source, providing a relatively uniform illumination pattern whose outer shape matches the shape of the imager gate.Type: GrantFiled: December 30, 2005Date of Patent: May 6, 2008Assignee: 3M Innovative Properties CompanyInventor: Patrick R. Destain
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Patent number: 7362507Abstract: A polarizing beam splitter is disclosed that includes a first prism, a second prism, and a reflective polarizing film disposed between the first prism and the second prism. The first prism comprises a first polymeric material, and has a first outer curved surface and an additional outer surface. The second prism comprises a second polymeric material, which in some embodiments may be the same as the first polymeric material, and has a second outer curved surface.Type: GrantFiled: July 29, 2005Date of Patent: April 22, 2008Assignee: 3M Innovative Properties CompanyInventors: John E. Duncan, Michael W. O'Keefe, William E. Phillips, Jiaying Ma, Patrick R. Destain