Light source for a contact image sensor
AssigneeDyna Image Corporation
InventorsCheden Cheng, Shih S. Huang, Tsung M. Ko, Hsin C. Su
Life of this patent
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Abstract
A light source for a contact image sensor, including an electroluminescent screen fastened to the scanning face glass of a contact image sensor at the back either by bonding or printing and having a narrow gap through which reflected light from document passes to the lens of the contact image sensor.
Claims1
A contact image sensor, comprising an electroluminescent screen fastened to a back side of a scanning face glass of the contact image sensor and spaced apart from a lens of said contact image sensor, said electroluminescent screen acted upon by electric power to emit light onto a document to be scanned, said electroluminescent screen having a narrow slot through which reflected light from said document passes to said lens.
Dependencies are inferred from the claim text.