To reduce the size and weight of an optical scanner, the present invention provides a mirrorless beam scanning unit. A flexible support structure, such as one or more strips of mylar, movably mounts the objective lens in front of the light emitter. The objective lens is laterally reciprocated in response...http://www.google.com/patents/US5374817?utm_source=gb-gplus-sharePatent US5374817 - Pre-objective scanner with flexible optical support
