Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
October 7, 2008
Patent Application Number
11956554
Date Filed
December 14, 2007
Patent Primary Examiner
Patent 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:−1.15<f1/f2<−0.70 (1)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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