Two-dimensional scanning device with deflection scanning plane a

Details Two-dimensional scanning device with deflection scanning plane a Two-dimensional scanning device with deflection scanning plane a

1979-12-28

1982-05-04

Henry, Jon W.

350 66, 350 68, G02B 2717

Patent

active

043279597

ABSTRACT:
A two-dimensional scanning device is provided with a two-dimensional deflector having a major scanning deflecting surface for two-dimensionally deflecting an incident light, the major deflection rotation axis of the deflector being determined so that the positional relation thereof with the deflecting surface is invariable, the minor deflection rotation axis of the deflector being determined orthogonally to an axis parallel to the major deflection rotation axis or orthogonally to the major deflection rotation axis, the deflector being for causing the incident light to be incident on the deflecting surface in parallelism to the minor deflection rotation axis or on the minor deflection rotation axis, and a scanning lens disposed between the two-dimensional deflector and a scanning surface, and a scanning lens for receiving the deflected light from the two-dimensional deflector and causing the scanning light to emerge toward the scanning surface. The major scanning deflecting surface and the optic axis of the scanning lens are parallel to each other, the scanning lens is pivotally moved in synchronism with the minor deflection rotation of the two-dimensional deflector and moreover, the focus of the scanning lens is always contained in the scanning surface, and the major scanning speed and minor scanning speed of the scanning beam on the scanning surface are constant.

REFERENCES:
patent: 1136761 (1915-04-01), Becker
patent: 3668984 (1972-06-01), Rosin
patent: 3797908 (1974-03-01), Ward et al.
patent: 3946150 (1976-03-01), Grafton
patent: 3961838 (1976-06-01), Zanoni
patent: 3973833 (1976-08-01), Lawson

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