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Inventor: Cederquist; John N.
Address: Ann Arbor, MI
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4934815 |
Aperture sampling coherence sensor and method |
June 19, 1990 |
| In a speckle imaging process, the contribution of non-uniform, incoherent background illumination is removed via an aperture sampling technique. A pair of uncorrelated speckle images are produced and subtracted from one another to eliminate the non-coherent background contribution. The r |
| 4930847 |
Multicolor holographic element and apparatus for head-up display applications |
June 5, 1990 |
| A method for producing multicolor holographic optical elements useful in presentation of multicolor holographic images in a head-up display (HUD) system. Because of restricted geometries, such HUDs should allow for reconstruction of wavefronts employing all readout beams coming from the |
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