Patents Assigned to PRIO Corporation
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Patent number: 6726327Abstract: This invention is a programmable vision testing apparatus and method for use in conducting optometric examinations of video display terminal (VDT) users. The apparatus uses a digital display screen accurately to represent a VDT used under actual work conditions. Further, a plurality of images can be displayed via the vision testing apparatus to provide a convenient and efficient way to test the eyes of VDT users with a wide variety of individual needs.Type: GrantFiled: December 23, 2002Date of Patent: April 27, 2004Assignee: PRIO CorporationInventors: Jonathan G. Torrey, David C. Squire
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Publication number: 20030090631Abstract: This invention is a programmable vision testing apparatus and method for use in conducting optometric examinations of video display terminal (VDT) users. The apparatus uses a digital display screen accurately to represent a VDT used under actual work conditions. Further, a plurality of images can be displayed via the vision testing apparatus to provide a convenient and efficient way to test the eyes of VDT users with a wide variety of individual needs.Type: ApplicationFiled: December 23, 2002Publication date: May 15, 2003Applicant: Prio CorporationInventors: Jonathan G. Torrey, David C. Squire
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Patent number: 6513931Abstract: This invention is a programmable vision testing apparatus and method for use in conducting optometric examinations of video display terminal (VDT) users. The apparatus uses a digital display screen accurately to represent a VDT used under actual work conditions. Further, a plurality of images can be displayed via the vision testing apparatus to provide a convenient and efficient way to test the eyes of VDT users with a wide variety of individual needs.Type: GrantFiled: May 31, 2000Date of Patent: February 4, 2003Assignee: PRIO CorporationInventors: Jonathan G. Torrey, David C. Squire
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Patent number: 6454412Abstract: The present invention relates to an improved display screen for a vision tester apparatus for use in optometric examinations to simulate the actual alphanumeric and graphical images of a modern, high-resolution video display terminal (VDT) and to facilitate prescribing corrective lenses that will perform well for a patient using an actual VDT. The display screen uses graphical images and alphanumeric characters of a continuous-line style to simulate more accurately the display on an modern, high-resolution VDT.Type: GrantFiled: May 31, 2000Date of Patent: September 24, 2002Assignee: PRIO CorporationInventor: Jonathan G. Torrey
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Patent number: 5515118Abstract: A test card for use in eye examinations emulates the light return profile of a video display screen such as those commonly used in connection with computers. The test card is used for prescribing corrective lenses for a computer user. The test card is formed on an opaque planar medium and has a plurality of characters formed thereon for reading by the patient, each character formed by a plurality of pixel elements. The pixel elements may be formed by designing a pattern of dots on a computer system using graphic software for representing the resulting pattern in a machine-readable graphics file. The graphics file is used to control a compatible imagesetter machine for forming the desired pattern on photographic film. According to an alternative method, a film master is prepared in which each pixel is a solid black dot. The test card is prepared by printing the image onto photographic paper through a diffusion element so as to create an approximately Gaussian light return profile across each pixel.Type: GrantFiled: January 30, 1995Date of Patent: May 7, 1996Assignee: PRIO CorporationInventors: Jonathan G. Torrey, Cosmo Salibello
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Patent number: 5440360Abstract: A test card for use in eye examinations emulates the light return profile of a video display screen such as those commonly used in connection with computers. The test card is used for prescribing corrective lenses for a computer user. The test card is formed on an opaque planar medium and has a plurality of characters formed thereon for reading by the patient, each character formed by a plurality of pixel elements. The pixel elements may be formed by designing a pattern of dots on a computer system using graphic software for representing the resulting pattern in a machine-readable graphics file. The graphics file is used to control a compatible imagesetter machine for forming the desired pattern on photographic film. According to an alternative method, a film master is prepared in which each pixel is a solid black dot. The test card is prepared by printing the image onto photographic paper through a diffusion element so as to create an approximately Gaussian light return profile across each pixel.Type: GrantFiled: November 5, 1993Date of Patent: August 8, 1995Assignee: Prio CorporationInventors: Jonathan G. Torrey, Cosmo Salibello
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Patent number: 5325136Abstract: An improved vision tester apparatus and method are disclosed for use in conducting optometric examinations of patients who use video display terminals (VDTs). Specifically, the tester simulates images that are displayed to the patient by a typical VDT, so as to facilitate prescribing corrective lenses that will perform well for the patient when used with an actual VDT. The tester (10) includes a flat-panel electroluminescent light source (32) for illuminating a screen (14) without hot spots. The screen includes a colored ink layer (78,80,82) and an opaque ink mask (70) for forming pixel-like light elements (24). Lensing structures (52,56,58,60) degrade the image such that each light element exhibits a generally Gaussian light amplitude curve (FIG. 5B) characteristic of a pixel of an actual VDT. A rechargeable battery (34) coupled to a inverter circuit (30) provide portable power for the EL panel to complete a compact, portable tester.Type: GrantFiled: January 4, 1993Date of Patent: June 28, 1994Assignee: PRIO CorporationInventors: Cosmo Salibello, Jonathan G. Torrey
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Patent number: D348931Type: GrantFiled: November 9, 1992Date of Patent: July 19, 1994Assignee: PRIO CorporationInventor: Jonathan G. Torrey
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Patent number: D370260Type: GrantFiled: November 29, 1994Date of Patent: May 28, 1996Assignee: Prio CorporationInventor: Jonathan G. Torrey