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. 08, 1993
Filed:
Sep. 27, 1991
Stanley J Kishner, Pomona, NY (US);
Hughes Aircraft Company, Los Angeles, CA (US);
Abstract
A beam-slicer (6) for generating a plurality of radiation beams, or pencil beams (7), from incident radiation (3). Each of the beams is directed to a different region of space. The beam-slicer includes a substrate (17) that, for a transmission grating embodiment, is comprised of a material that is substantially transparent to incident radiation having wavelengths of interest. The substrate includes a plurality of regions, or sub-apertures (8), formed within a surface thereof, each of the regions defining a blazed transmission or reflection grating for deviating incident radiation into a radiation beam. The blazed diffraction grating is formed such that the wavelengths of interest within each radiation beam are simultaneously deviated at a same, predetermined angle. Also disclosed is a Sample Point Interferometer that includes the beam-slicer. The beam-slicer generates pencil beams, each of which is directed to a retroreflector (9) positioned upon a surface of a structure (10) under measurement.