Patents by Inventor Bruce E. Truax
Bruce E. Truax 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: 11841548Abstract: Disclosed is a variable-zoom imaging apparatus that includes: i) imaging optics configured to form an image in an imaging area of an object positioned in an object area; ii) an adjustable aperture stop to adjustably set a numerical aperture NA for the image formed by the imaging optics; iii) an electronic detector comprising an array of detector elements positioned in the imaging area to detect the image; and iv) image processing circuitry coupled to the electronic detector to produce a digital representation of the image based on signals from at least some of the detector elements. The image processing circuitry produces the digital representation with a different magnification of the object m for each of a plurality of different numerical apertures for the image set by the adjustable aperture stop.Type: GrantFiled: June 29, 2021Date of Patent: December 12, 2023Assignee: Zygo CorporationInventor: Bruce E. Truax
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Publication number: 20220057599Abstract: Disclosed is a variable-zoom imaging apparatus that includes: i) imaging optics configured to form an image in an imaging area of an object positioned in an object area; ii) an adjustable aperture stop to adjustably set a numerical aperture NA for the image formed by the imaging optics; iii) an electronic detector comprising an array of detector elements positioned in the imaging area to detect the image; and iv) image processing circuitry coupled to the electronic detector to produce a digital representation of the image based on signals from at least some of the detector elements. The image processing circuitry produces the digital representation with a different magnification of the object m for each of a plurality of different numerical apertures for the image set by the adjustable aperture stop.Type: ApplicationFiled: June 29, 2021Publication date: February 24, 2022Inventor: Bruce E. Truax
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Patent number: 8698891Abstract: Determining spatial information about a part includes positioning the part in a fixture having two reference surfaces, where the part is positioned between the two reference surfaces, imaging the two reference surfaces and opposing surfaces of the part to different locations of a multi-element detector, simultaneously acquiring images of the opposing sides of the part and the two reference surfaces using the multi-element detector, and determining spatial information about the part based on the simultaneously acquired images.Type: GrantFiled: March 9, 2011Date of Patent: April 15, 2014Assignee: Zygo CorporationInventors: Justin Turner, Tyler Steele, Stephen L. Mielke, Xavier M. Colonna De Lega, Bruce E. Truax, Andrew D. Meigs
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Publication number: 20120229621Abstract: Determining spatial information about a part includes positioning the part in a fixture having two reference surfaces, where the part is positioned between the two reference surfaces, imaging the two reference surfaces and opposing surfaces of the part to different locations of a multi-element detector, simultaneously acquiring images of the opposing sides of the part and the two reference surfaces using the multi-element detector, and determining spatial information about the part based on the simultaneously acquired images.Type: ApplicationFiled: March 9, 2011Publication date: September 13, 2012Applicant: Zygo CorporationInventors: Justin Turner, Tyler Steele, Stephen L. Mielke, Xavier M. Colonna de Lega, Bruce E. Truax, Andrew D. Meigs
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Patent number: 6447119Abstract: A technique for evaluating the topography of a cornea is disclosed, which utilizes a virtual image/object of a keratoscope pattern. The disclosed topography system includes a structured light source to create the keratoscope pattern or another diagnostic pattern, an optical assembly to focus the created pattern upon or behind the cornea, and for capturing the image reflected off the patient's eye and directing the reflected image toward an imaging system for processing. Light emitted by the light source is preferably not in the visible range, to minimize discomfort to the patient. Since the topography is evaluated with a projected virtual image, there is no nose or brow shadow, thereby allowing better corneal coverage. The optical system includes an aperture stop which is preferably conjugate with a point behind the corneal surface approximating the center of a normal cornea.Type: GrantFiled: February 7, 2000Date of Patent: September 10, 2002Assignee: Visionrx, Inc.Inventors: Jeffrey L. Stewart, Robert K. Maloney, Bruce E. Truax
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Patent number: 6059773Abstract: A technique for evaluating the topography of a cornea in which a virtual object of a keratoscope pattern isured. The topography system includes a structured light source to create the keratoscope pattern or another diagnostic pattern, an optical assembly to focus the created pattern upon or behind the cornea, and for capturing the image reflected off the patient's eye and directing the reflected image toward an imaging system for processing. Light emitted by the light source is preferably not in the visible range, to minimize discomfort to the patient. Since the topography is evaluated with a projected virtual image, there is no nose or brow shadow, thereby allowing better corneal coverage. The optical system includes an aperture stop which is preferably conjugate with a point behind the corneal surface approximating the center of a normal cornea. Thus, wide angle capture is achieved as reflected rays reaching the imaging system appear as if they originated at the center of the cornea.Type: GrantFiled: August 4, 1997Date of Patent: May 9, 2000Assignee: VisionRx.Com, Inc.Inventors: Robert K. Maloney, Jeffrey L. Stewart, Bruce E. Truax
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Patent number: 4502785Abstract: A narrow beam of light (26) is directed at a beamsplitter (12) at an incident angle (.theta.) thereto. A portion (28) of the beam (26) passes through the beamsplitter (12) and is reflected from a first mirror (22) while a portion (29) of the beam (26) is reflected from the beamsplitter (12) and directed onto and reflected by a second mirror (24). The beams (28, 29) reflected from the first and second mirrors (22, 24) intersect at a reference plane (R). The incident angle .theta. of the light beam (26) is then varied until the reflected beams intersect on the surface of an object (32) along the plane of symmetry of the system. The known variation of the incident angle, .DELTA..theta., provides sufficient information to determine the distance of the surface of the object (32) from the reference plane (R). The object 32 is then moved in an incremental fashion and .DELTA..theta. determined for each step to ascertain the surface profile of the object.Type: GrantFiled: August 31, 1981Date of Patent: March 5, 1985Assignee: AT&T Technologies, Inc.Inventor: Bruce E. Truax
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Patent number: 4405701Abstract: A photomask (30) used to form patterns on a resist coated semiconductor wafer is comprised of a transparent baseplate (31) having a thin metallic pattern (32) thereon; a transparent, planar coverplate (33) in intimate contact with the patterned baseplate (31) and an index matching fluid (34) interposed therebetween.Type: GrantFiled: September 17, 1982Date of Patent: September 20, 1983Assignee: Western Electric Co.Inventors: Edward L. Banks, Bruce E. Truax, Laurence S. Watkins
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Patent number: 4361643Abstract: A photomask (30) used to form patterns on a resist coated semiconductor wafer is comprised of a transparent baseplate (31) having a thin metallic pattern (32) thereon; a transparent, planar coverplate (33) in intimate contact with the patterned baseplate (31) and an index matching fluid (34) interposed therebetween.Type: GrantFiled: July 29, 1981Date of Patent: November 30, 1982Assignee: Western Electric Co., Inc.Inventors: Edward L. Banks, Bruce E. Truax, Laurence S. Watkins
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Patent number: 4334775Abstract: A plurality of retroreflector devices (22-23) are fixedly mounted in spaced relation on a microwave tower (10) are raster scanned with a laser beam (46). The direction of the beam (46) is monitored as it impinges on each device to determine the position of each device. The twist and sway of the tower is then determined using the positional information of the devices.Type: GrantFiled: April 3, 1980Date of Patent: June 15, 1982Assignee: Western Electric Co., Inc.Inventors: Jerry D. Breecher, Bruce E. Truax