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:
Oct. 05, 2010
Filed:
Jan. 27, 2004
Andrew M Scott, Worcestershire, GB;
Andrew C Lewin, Worcestershire, GB;
Simon C Woods, Worcestershire, GB;
Andrew M Scott, Worcestershire, GB;
Andrew C Lewin, Worcestershire, GB;
Simon C Woods, Worcestershire, GB;
QinetiQ Limited, London, GB;
Abstract
Optical apparatus for simultaneously focussing first and second coaxially spaced object planes in respective separate first and second areas of a common image plane(such as the sensor of a CCD camera) comprises non-diffractive beamsplitter means for receiving light from said object planes along a common pathfor transmission to said first and second image areas along respective first and second optical paths, and reflective or transmissive focussing meansarranged to bring said first and second object planes into focus in said first and second areas. The object planes may be differentiated by having different length paths(different physical lengths and/or using a differential optical delay), and/or by having different focussing powers in the two paths. In an add-on for a camera, differently curved mirrors of long focal length modify the main camera lens. Polarising optics may be used to separate the two images. The apparatus may be used for 3-D imaging or wavefront analysis.