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:
Sep. 23, 1980
Filed:
Mar. 06, 1978
Albert G Choate, Honeoye Falls, NY (US);
Automation Gages, Inc., Rochester, NY (US);
Abstract
The light source comprises an elongate arc lamp surrounded by a paraboloidal reflector which, in one embodiment, projects an annular beam of light onto an annular reflector, or mirror, which in turn projects the light onto a workpiece. Reflected light from the workpiece is projected backwardly through an opening in the center of the mirror and is projected in known manner onto a viewing screen. In a second embodiment the mirror comprises a transparent member having a reflective spot (e.g., silver) in its center. In each embodiment a glass light filter is positioned between the light source and the associated mirror to filter out all but yellow and green light, and is inclined to the axis of the associated arc lamp to prevent direct reflection of ultraviolet light back at the lamp. The paraboloidal reflectors concentrate and direct collimated light toward the associated mirror thus eliminating need to employ separate collimating lenses and high wattage lamps.