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:
May. 28, 1985
Filed:
Sep. 13, 1983
Ralph M Francis, Jr, Racine, WI (US);
Jerome C Isaacson, Sturtevant, WI (US);
Other;
Abstract
An improved photo flash lamp, especially suited for medical photography includes a housing having a viewing tube extending therethrough and protruding therebeyond for mounting onto an adapter threaded into the lens of a single lens reflex camera. The housing carries a ring strobe concentric about the viewing tube for illuminating the subject matter photographed by the camera lens through the viewing tube. A set of high intensity illumination lamps are disposed within the housing about the viewing tube concentric within the ring strobe for providing shadowless illumination of the subject matter to enable proper focusing of the camera lens before the picture is taken. The ring strobe is interfaced to the camera by way of a flash-ready circuit which alerts the camera that the ring strobe is ready, thereby warning of a condition which would result in improper film exposure prior to when the ring strobe is fully recharged. The flash ready circuit includes a precision indicator mounted on the surface of the housing facing the camera operator to provide a visual indication as to the readiness status of the ring strobe.