Patent ID: 6448563
Filing Date: 2002-09-10
Classification: B29C

Abstract:
An apparatus for the photo-initiated chemical cross-linking of material that is enclosed in an optically transparent mould for the formation of a moulding, comprising:a light source by which the material can be acted upon by light that triggers the cross-linking, said light source being optically approximately in point form; a mask having transparent and non-transparent surface portions; condenser optics that are arranged between the light source and the mask in a manner so that a largely homogeneous illumination of the mask is obtained; and a projection optics for projecting the mask onto the material enclosed in the mould in an image-side telecentric beam path, wherein the region to be cross-linked in the mould is determined by the projection of the mask by the projection optics onto the material enclosed in the mould in the image-side telecentric beam path, thereby delimiting the radial shape of the moulding.