Program controlled beam focus to compensate for thermal changes

Details Program controlled beam focus to compensate for thermal changes Program controlled beam focus to compensate for thermal changes

1999-04-19

2000-10-24

Sugarman, Scott J.

Optical: systems and elements

Lens

With support

359819, 355 53, G02B 702

Patent

active

06137640&

ABSTRACT:
An imaging system with beam focus adjustment, includes an emitter which emits a beam of radiation along a beam path and an optical assembly, having a focus adjustment mechanism, configured to focus the emitted beam on a medium to be imaged. A medium support member supports the medium on its support surface during imaging. A sensor generates temperature data representing a detected temperature of the medium support member and a controller controls the focus adjustment mechanism in accordance with the temperature data to adjust the focus of the emitted beam on the medium.

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Patent Abstracts of Japan vol. 097, No. 004, Apr. 30, 1997 & JP 08 329543 A (Ricoh Co Ltd), Dec. 13, 1996 Japan.

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