Optical apparatus for a line scanner system with reduced...

Details Optical apparatus for a line scanner system with reduced... Optical apparatus for a line scanner system with reduced...

2005-05-17

2005-05-17

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

High distortion lens

C359S708000, C358S494000

Reexamination Certificate

active

06894843

ABSTRACT:
An optical apparatus for a line scanner system comprises a main lens group, an aspherical field flattener lens and a line sensor arranged sequentially along the same optical axis. The main lens group consists of four rotationally symmetrical lenses for refracting and converging light beams into focus. The field flattener lens is rotationally symmetrical in its optical profile and shapes as a strip oriented along the direction of the line image. The field flattener lens is arranged between the main lens group and the line sensor and closer to the line sensor for refracting the light beam to the line sensor in a relatively wide field angle, and as a result, various aberrations have been corrected while the optical total track also has been reduced. And an image plane is provided in the line sensor for the linear light beam, in which the instantaneous field of view is a line.

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