Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
2007-12-14
2008-10-07
Phan, James (Department: 2872)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
C359S207110, C359S213100, C359S214100, C359S215100
Reexamination Certificate
active
07433109
ABSTRACT:
There is provided a scanning optical system used with a deflection mirror that produces sinusoidal vibrations. The scanning optical system includes a first lens having a positive power, and a second lens having a negative power. In this configuration, the first lens and the second lens are arranged in this order from a deflection mirror side. Further, the scanning optical system has an arcsine property and satisfies a condition:in-line-formulae description="In-line Formulae" end="lead"?−1.15<f1/f2<−0.70 (1)in-line-formulae description="In-line Formulae" end="tail"?where f1(mm) represents a focal length of the first lens, and f2(mm) represents a focal length of the second lens.
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English language Abstract of JP 2002-182147.
Greenblum & Bernstein P.L.C.
Hoya Corporation
Phan James
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