Image display device applying light beam scanning capable of dir

Details Image display device applying light beam scanning capable of dir Image display device applying light beam scanning capable of dir

1998-07-10

2000-11-14

Mack, Ricky

Optical: systems and elements

Methods

G02F 500

Patent

active

061478229

ABSTRACT:
An image display device of the present invention comprises a light converting means which converts picture signals into light beams, and a light beam scanning means which scans by beams. The light beam scanning means is provided with an x-axis optical scanner and a y-axis optical scanner each of which has a moving mirror and an excitation means. The moving mirror reflects a light beam from a light source in cascade, reflection directions being subjected to a perpendicular resonance rotation oscillation with each other because of a light beam scanning, each resonant rotation oscillation having a resonance frequency which is the same with or close to the other and being phase shifted by 90.degree. with respect to the other while having a predetermined oscillation ratio. The light beam scanning means implements a light beam scanning in a circumference direction of a circle having its center at a certain point on a screen or on a retina of a human eye, thus forming a picture image having a scanning line structure of a concentric circle form or a spiral form, with the pixels having been altered their density or size in accordance with a distance from the center.

REFERENCES:
patent: 5467104 (1995-11-01), Furness, III et al.
patent: 5703637 (1997-12-01), Miyazaki et al.
patent: 5903397 (1999-05-01), Melville et al.

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