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:
Feb. 28, 1989
Filed:
May. 08, 1986
Paul J Bjorkholm, Sharon, MA (US);
American Science and Engineering, Inc., Cambridge, MA (US);
Abstract
A method and apparatus for practicing diaphanography by directing a beam of collimated light along a linear input path into incidence with a flat side of a compressed human breast, and collecting light which emerges from an opposing flat side of the compressed breast along an output path that is colinear with the light input path and with an angular divergence no greater than the angular divergence of the collimated input beam of light. Application of a good scatter rejecting geometry assures that the useful information in that portion of the beam of light which passes directly through the compressed breast can be utilized even though the emergent light is only a small fraction of the incident light.