Patent ID: 7556554

Claim:
An apparatus for forming or working optical objects, comprising a working device, at least one measuring device and a control device, the working device being adapted to form a surface of the optical object by machining or abrading, the at least one measuring device is adapted to measure changes in form and/or surface roughness of the surface during the surface being formed, the measuring device being further adapted to provide measuring data to the control device, the control device being adapted to control said working device on the basis of the measuring data, wherein at least one holder is provided for holding the object to be worked in the apparatus, which holder is at least partly translucent while at least one light source and at least one light receiver are disposed adjacent said holder, such that during use, light from said light source can be sent through said holder and an element located thereon and at least light from the light source reflected by the surface to be worked can be captured by said light receiver, while measuring means are provided for determining absolute and/or relative changes in the surface of said object to be worked from said reflected light captured in said light receiver.