Patents by Inventor Andrew S. Duncan

Andrew S. Duncan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for the production of an ophthalmic lens
    Patent number: 4723376
    Abstract: Apparatus for the positional control of the edge grinding of an ophthalmic lens to a desired peripheral shape is effected by a control computer which processes and stores data representative of a pattern which delineates the peripheral shape of the lens. The data is derived by rotating a linear image sensor about an axis passing through a support for a pattern which delineates the required shape. The sensor generates pixel data which is processed and stored by the control computer for use for selective control of a lens periphery grinder.
    Type: Grant
    Filed: November 25, 1986
    Date of Patent: February 9, 1988
    Assignee: Innovative Research Inc.
    Inventors: Dieter W. Blum, Andrew S. Duncan