Laser projector

Details Laser projector Laser projector

2011-07-12

2011-07-12

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S198100, C359S199300, C359S213100

Reexamination Certificate

active

07978387

ABSTRACT:
A laser projector including a laser light source, a scan unit to scan the laser beam, a scan signal generation unit to generate a pulse signal, a drive unit to drive the scan unit and a pulse pattern adjustment unit to adjust a pulse pattern, wherein the pulse pattern adjustment unit adjusts the pulse pattern to a first pulse pattern for adjusting the swing amount from a first swing amount to a second swing amount in a projection interval, adjusts the pulse pattern to a second pulse pattern for adjusting the swing amount from the second swing amount back to the first swing amount in a first-stage interval in a non-projection interval, and adjusts the pulse pattern to a third pulse pattern for keeping the swing amount at the first swing amount in a second-stage interval in the non-projection interval until a scan position returns to the projection interval.

REFERENCES:
patent: 6064471 (2000-05-01), Nakagawa
patent: 7130095 (2006-10-01), Wood
patent: 2004/0263937 (2004-12-01), Fujii et al.
patent: 2005/0279922 (2005-12-01), Wittenberg et al.
patent: 2008-268645 (2008-11-01), None

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