The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 1995
Filed:
Mar. 01, 1993
Jonathan L Dugdale, Burleson, TX (US);
Ross N Lindly, Fort Worth, TX (US);
Hughes Training, Inc., Arlington, TX (US);
Abstract
A method and apparatus is provided for ensuring that an image projected upon a visual display device is properly aligned with the viewing surface of the display device. Important to achieving the proper alignment is the use of a fluorescent ink which is visible only when illuminated under ultraviolet light. Use of the fluorescent ink allows a pattern of reference points, constituting an alignment pattern, to be permanently marked directly on the viewing surface of the visual display device, for example. Since the alignment pattern is permanently marked and is visible only when illuminated with ultraviolet light, alignment between the image and the display device can be immediately determined without the aid of additional equipment such as is employed by previously known image alignment systems.