Thermal compensation focus adjustment

Details Thermal compensation focus adjustment Thermal compensation focus adjustment

1997-05-06

1999-08-10

Kim, Robert H.

Optics: measuring and testing

With plural diverse test or art

G01N 2100

Patent

active

059367172

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.

REFERENCES:
patent: 4990771 (1991-02-01), Minoura et al.
patent: 5436692 (1995-07-01), Noguchi
patent: 5537168 (1996-07-01), Kitagishi et al.
patent: 5663554 (1997-09-01), Henry

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