Image display apparatus

Details Image display apparatus Image display apparatus

2011-01-04

2011-01-04

Cherry, Euncha P (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S224100

Reexamination Certificate

active

07864390

ABSTRACT:
An image display apparatus capable of displaying an image on a plane of projection by beam raster scanning associated with resonant oscillation in a horizontal scanning direction (the main scanning direction), includes a resonance-point detector for detecting a mechanical resonant frequency in the horizontal scanning direction. Out of frequencies that are multiples of a vertical synchronizing frequency in image display, for example a frequency nearest to the mechanical resonant frequency detected in the resonance-point detector is determined as a horizontal scanning frequency of the raster scanning. The image display apparatus can thus provide a stable image display with ease.

REFERENCES:
patent: 2007/0070481 (2007-03-01), Nishikawa et al.
patent: 11-14622 (1999-05-01), None
patent: WO 02/37165 (2002-05-01), None

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