Abstract: A lens module includes a non-cylinder lens and a clamping apparatus. The clamping apparatus includes a base, two side parts, and a top part. Two side parts are disposed on two ends of the base to form a containing trough for holding the lens. One end of the top part is connected to one side part and the other end is fixed on the other side part. Two screw holes on the top part allow two adjusting screws to be screwed into for pressing the lens. Two elastic devices provide the elasticity between the lens and the base and the relative height of two sides of the lens is adjusted by turning the two adjusting screws.

Abstract: A document feeding system is disclosed in this present invention. The document feeding system according to this invention can improve the document transfer by employing a carrying device with multiple rotating speeds. Thus the mistakes during the document transfer, such as terminating the document transfer, destroying the document, can be prevented by the above-mentioned document feeding system. Moreover, because an accurate calculation in the disposition of elements in the document feeding system is not necessary, the manufacturing of the above-mentioned document feeding system is simpler than the manufacturing of the document feeding system in the prior art. Hence, this invention can not only improve the efficiency of a document transfer, but also simplify the manufacturing process of a document feeding system.

Abstract: An automatic document-feeding apparatus is disclosed. The automatic document-feeding apparatus comprises means for picking up and transporting document sheets, means for separating document sheets into a sequence of transportation, and means for pressing document sheets. The means for picking up and transporting document sheets contact and transport document sheets and the means for separating document sheets comprise an incline plane used to receive and support the document sheet being transported from the means for picking up and transporting document sheets. The means for pressing document sheets press the document sheets to keep the document sheets and the incline plane in tight contact.