Lens mounting for an electrodynamic device for recording on and/or scanning optical discs by means of a radiation spot, and method of manufacturing such a lens mounting

Claim 1

A method of manufacturing a movable lens mounting for an electrodynamic device for recording and/or scanning optically readable discs by means of a radiation spot, the device comprising a frame having supporting means for guiding movement of the lens on a rectilinear path, the lens mounting comprising a first part having supporting surfaces which engage the supporting means, a second part having a mount for a lens system for focusing a radiation beam to form the radiation spot, and blade springs which connect the first and second parts so that the second part can move relative to the first part along the optical axis of the lens and perpendicular to said rectilinear path, each spring having opposite ends fixedly embedded in respective first and second parts, the method comprising the steps of: providing a mold comprising first and second dies, said first die having first molding portions for molding the supporting surfaces of the first part which engage the supporting means and a second molding portion for molding the lens mount of the second part, arranging the blade springs in the mold, said mold, when closed, forming discrete cavities connected only by said springs, closing the mold and injecting a thermosetting material into the cavities to form the first and second parts connected only by said springs.

Claim 2

A method of manufacturing a movable lens mounting for an electrodynamic device for recording and/or scanning optically readable discs by means of a radiation spot, the device comprising a frame having supporting means for guiding movement of the lens on a rectilinear path, the lens mounting comprising a first part having supporting surfaces which engage the supporting means, a second part having a mount for a lens system for focusing a radiation beam to form the radiation spot, and blade springs which connect the first and second parts so that the second part can move relative to the first part along the optical axis of the lens and perpendicular to said rectilinear path, each spring having opposite ends fixedly embedded in respective first and second parts, the method comprising the steps of: providing a mold comprising first and second dies, said first die having first molding portions for molding the supporting surfaces of the first part which engage the supporting means and a second molding portion for molding the lens mount of the second part, arranging the blade springs in the mold, said mold, when closed, forming discrete cavities connected only by said springs, closing the mold and injecting a thermosetting material into the cavities to form the first and second parts connected only by said springs.