Scanned beam display with parallelogram distortion correction

Details Scanned beam display with parallelogram distortion correction Scanned beam display with parallelogram distortion correction

2011-07-19

2011-07-19

Cherry, Euncha (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S224100

Reexamination Certificate

active

07982934

ABSTRACT:
A scanning assembly (400) for use in a scanning display includes a reflective scanning surface, such as a scanning mirror (412). The reflected scanning surface can be mounted on a scan plate (409). The scanning assembly (400) is configured to pivot about a first axis (403) and a second axis (404) to form an image. To correct parallelogram distortion, the first axis (403) and second axis (404) are non-orthogonal relative to each other. Torsion arms (407,408) facilitating rotation of the scanning mirror (412) along one axis (403) can be oriented non-orthogonally relative to other torsion arms (413,414) by an amount sufficient to correct parallelogram distortion.

REFERENCES:
patent: 5579148 (1996-11-01), Nishikawa et al.

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