US Patent 7978389 Optical scanning device and image output apparatus
Patent 7978389 was granted and assigned to NEC Corporation on July, 2011 by the United States Patent and Trademark Office.
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Patent abstract
The present invention provides an optical scanning device that prevents a disadvantageous increase in device size. Transfer optical system 17 includes at least concave mirrors 19 and 20. Furthermore, transfer optical system 17 allows a light beam scanned by scan mirror 16 to enter the scan mirror again at least via concave mirrors 19 and 20. Then, scan mirror 16 scans and emits the laser light beam received via concave mirrors 19 and 20, to a plane of projection.
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Patent Inventor Names
Osamu Ishibashi0
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US Patent 07978389 Optical scanning device and image output apparatus US Patent 7978389 Optical scanning device and image output apparatus
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Patent Number
07978389
Patent Number
7978389
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US Patent 07978389 Optical scanning device and image output apparatus
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Is a
Current assignee
Patent jurisdiction
Patent number
07978389
Date of patent
July 12, 2011
Patent application number
12742337
Date Filed
October 6, 2008
Patent primary examiner
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