Laser scanning apparatus

Details Laser scanning apparatus Laser scanning apparatus

2005-05-31

2005-05-31

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S204200, C359S208100, C359S207110

Reexamination Certificate

active

06900917

ABSTRACT:
A laser scanning apparatus includes a light source to emit light fluxes, a first imaging optical system to magnify or reduce the light fluxes emitted from the light source in a given position and angle, a light deflector to deflect and reflect the light fluxes penetrated through the first imaging optical system, and a second imaging optical system to correct optical errors in the light fluxes reflected from the light deflector. The second imaging optical system includes a refraction/reflection lens part to alternatively refract and reflect the light fluxes reflected from the light deflector so that the light fluxes are refracted at least two times. Thus, the second imaging optical system may be provided with only one f-theta lens, minimizing a number of parts, reducing fabrication cost and increasing productivity of the laser scanning apparatus.

REFERENCES:
patent: 5517330 (1996-05-01), Maeda
patent: 5805324 (1998-09-01), Endou
patent: 5963355 (1999-10-01), Iizuka

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