Patents by Inventor Avi Y. Feldblum

Avi Y. Feldblum 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).

  • Free-space optical interconnection arrangement
    Patent number: 5412506
    Abstract: A diffractive and a refractive microlens component are combined into a doublet lens to obtain imaging properties that are improvements over those achievable using separate components. In one application, diffractive/refractive microlens arrays are arranged to provide a free-space optical permutation interconnect arrangement.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: May 2, 1995
    Assignee: AT&T Corp.
    Inventors: Avi Y. Feldblum, Jurgen Jahns, Casimir R. Nijander, Frank Sauer, Wesley P. Townsend
  • Methods for making microlens arrays
    Patent number: 5286338
    Abstract: During a reactive ion etching process (FIG. 5) for making lens elements (15, FIG. 4) in a silica substrate (12), the gas constituency in the reactive ion etch chamber is changed to adjust the curvature of lens elements formed in the silica substrate and to reduce the aberrations of such lens elements. For example, two gases, CHF.sub.3 and oxygen may be supplied to the reactive ion etch chamber and, during the reactive ion etch process, the proportion of oxygen is significantly reduced, which reduces the aberrations of the lens elements formed by the process.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: February 15, 1994
    Assignee: AT&T Bell Laboratories
    Inventors: Avi Y. Feldblum, Keith O. Mersereau, Casimir R. Nijander, Wesley P. Townsend