Holographic image projection with holographic correction
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United States of America Patent
Stats
-
Jun 18, 2024
Grant Date -
Oct 28, 2021
app pub date -
Jul 6, 2021
filing date -
Dec 21, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
There is provided a method of projection using an optical element (502,602) 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 (604a) to produce first holographic data. Light is spatially modulated (504,603a) 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 (502,602) by illuminating a first region (607) of the optical element (602) with the first spatially modulated beam. The first lensing effect (604a) compensates for the optical power of the optical element in the first region (607). Advantageous embodiments relate to a head-up display for a vehicle using the vehicle windscreen (502,602) as an optical element to redirect light to the viewer (505,609).
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International Classification(s)
- 2021 Application Filing Year
- H04N Class
- 16793 Applications Filed
- 10991 Patents Issued To-Date
- 65.45 % Issued To-Date
Cited Art Landscape
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- 0 Citation Count
- H04N Class
- 0 % this patent is cited more than
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