A compact specular reflection type image pickup unit has a light source 11 mounted at a position a specified distance away from the target surface of an original P, and the light source 11 emits an outgoing light ph 11 at an angle to the normal to the target surface. The emitted light ph 11 passes through...http://www.google.ca/patents/US6466338?utm_source=gb-gplus-sharePatent US6466338 - Image pickup unit
