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. 14, 1991
Filed:
Jun. 13, 1989
Hans Bjelkhagen, Chicago, IL (US);
Marc D Friedman, Watertown, MA (US);
Biologic Systems Corp., Mundelein, IL (US);
Abstract
Apparatus and methods for high resolution holographic recordation and microscopic examination of the holographic image of biological tissue. A single beam Denisyuk holographic recordation of the biological tissue is obtained with direct contact or close proximity to the tissue. Contrast enhancement by staining with a dye selected to maximize absorption of the light frequency used to record the hologram is used to improve contrast and resolution. A liquid interface is formed between the recording film and the subject tissue to improve image quality and resolution. The resulting high resolution three dimensional holographic images may be examined under microscope magnification for such applications as medical biopsy.