Optical scanner for finite conjugate applications

Details Optical scanner for finite conjugate applications Optical scanner for finite conjugate applications

1995-01-27

1996-09-17

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359203, 359212, 359226, G02B 2608

Patent

active

055574475

ABSTRACT:
An optical system providing a rotating scan disc including a circular array of concave reflectors on a planar surface thereof and imaging means adapted to coincide with the scanning sweep of the concave reflectors and separated from the concave reflectors by a distance equal to the focal length of the concave reflectors. A light source is provided to emit a light beam toward the circular array of concave reflectors to form an image redirected from the imaging means and the imaging means includes an objective mirror and a strip prism adapted to correct field curvature of the image. Additionally, means are provided to monitor the position of the light beam in both the scan and cross-scan directions and to reposition the light beam by movement of at least one optical component.

REFERENCES:
patent: 4538181 (1985-08-01), Taylor
patent: 5365364 (1994-11-01), Taylor

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