Optical scanning apparatus and scanning image display apparatus

Details Optical scanning apparatus and scanning image display apparatus Optical scanning apparatus and scanning image display apparatus

2007-01-22

2009-02-17

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S198100, C359S199200, C359S214100

Reexamination Certificate

active

07492495

ABSTRACT:
An optical scanning apparatus in which keystone distortion non-linearity distortion in a projected image can be excellently corrected is provided. An optical scanning apparatus has light source means and deflecting means for deflecting a light beam emitted from the light source means two-dimensionally in a first direction and a second directrion, the deflection speed of the deflecting means being higher in the first direction than in the second direction. The deflecting means is driven in such a way that its angular velocity in the second direction is smaller when optically scanning a position on the surface to be scanned at which the angle of incidence of the deflected light beam in the second direction is larger than when optically scanning a position on said surface to be scanned at which the angle of incidence of the deflected light beam in said second direction is small.

REFERENCES:
patent: 4180307 (1979-12-01), Tateoka et al.
patent: 4329012 (1982-05-01), Minoura et al.
patent: 7262894 (2007-08-01), Oettinger et al.
patent: 2005/0190419 (2005-09-01), Ishihara
patent: 08-009306 (1996-01-01), None
patent: 08-079669 (1996-03-01), None
patent: 2000-180779 (2000-06-01), None

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