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:
Mar. 12, 2019
Filed:
Aug. 22, 2017
Two Trees Photonics Limited, Knowlhill, Buckinghamshire, GB;
Jamieson Christmas, Knowlhill, GB;
Dackson Masiyano, Knowlhill, GB;
DAQRI HOLOGRAPHICS, LTD, Knowlhill, GB;
Abstract
There is provided a method of projection using an optical element () having spatially variant optical power. The method comprises combining Fourier domain data representative of a 2D image with Fourier domain data having a first lensing effect () to produce first holographic data. Light is spatially modulated () with the first holographic data to form a first spatially modulated light beam. The first spatially modulated light beam is redirected using the optical element () by illuminating a first region () of the optical element () with the first spatially modulated beam. The first lensing effect () compensates for the optical power of the optical element in the first region (). Advantageous embodiments relate to a head-up display for a vehicle using the vehicle windscreen () as an optical element to redirect light to the viewer ().