Two-beam scanning optical system

Details Two-beam scanning optical system Two-beam scanning optical system

1982-11-03

1985-06-25

Corbin, John K.

G02B 2717

Patent

active

045250243

ABSTRACT:
A two-beam scanning optical system comprising two laser beams each having a polarization characteristic, a first polarization beam splitter for compounding the two laser beams into one laser beam, a rotary polygonal mirror for scanning the compounded laser beam, a second polarization beam splitter for separating the compounded laser beam into two laser beams, and a lens system for focusing the separated laser beams onto a surface of a sensitive drum of a laser printer and onto a surface of an original document to be read, respectively, so that said two separated laser beams scan the respective surfaces of the sensitive drum and the original document.

REFERENCES:
patent: 4002829 (1977-01-01), Hutchison
patent: 4125843 (1978-11-01), Whitby
patent: 4370026 (1983-01-01), Dubroeucq et al.

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