An optical scan module, for example for an optical scanner, includes an integrally molded plastics material member which defines not only the laser focusing lens, but also the laser focusing aperture and the collection mirror. In addition, the molded member may act to house and to locate both a semiconductor...http://www.google.com/patents/US6114712?utm_source=gb-gplus-sharePatent US6114712 - One piece optical assembly for low cost optical scanner
