Method for imaging bar codes

摘要

PCT No. PCT/DE94/00278 Sec. 371 Date Aug. 30, 1995 Sec. 102(e) Date Aug. 30, 1995 PCT Filed Mar. 14, 1994 PCT Pub. No. WO94/22104 PCT Pub. Date Sep. 29, 1994The method is for use in a bar code reader. By means of a special illumination of the bar code applied to a reflecting surface/wafer and special receiver optics, bright-field illumination is implemented. Optimum contrasts between the images of the marking elements and the surrounding reflecting areas offer a high recognition reliability.