Variable focus imaging lens assembly for an imagin

专利名称：Variable focus imaging lens assembly for an

imaging-based bar code reader

发明人：Igor Vinogradov申请号：US11756052申请日：20070531公开号：US08387884B2公开日：20130305

专利附图：

摘要：A variable focus imaging lens assembly () for an imaging-based bar code reader() including: a lens assembly () focusing light from a field of view (FV) onto a sensor array(), the lens assembly () including a lens () movable along a path of travel; a drive

mechanism () to drive the moving lens (); a focusing system () for establishing a referencepoint (RP) for the moving lens () along the path of travel corresponding to a referencefocal plane (RFP) within the field of view; and a projection assembly () projecting a virtualtarget image () of a reference target light source () to a predetermined position (P) withinthe field of view and coincident with the reference focal plane (RFP), the predeterminedposition (P) being a known distance (D) from the lens assembly () along its optic axis (OA).

申请人：Igor Vinogradov

地址：New York NY US

国籍：US

代理人：Nong-Qiang Fan

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