Patents by Inventor Madhav Medra

Madhav Medra 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).

  • Lens arrays for light sensitive devices
    Patent number: 4966831
    Abstract: In the method of this invention, lens arrays for light sensitive devices are made which have lenses that are substantially transparent over the wavelength range from 400 nm to 1000 nm comprising the steps of:(a) providing a spacer and planarization layer on the device over each sensing element;(b) applying a layer of photoresist material;(c) patterning and flowing the photoresist material to form a desired lens array on the spacer and planarization layer by applying heat; and(d) conformally coating the so formed lenses with a layer of between 1000-3000 .ANG. of a transparent dielectric material such as silicon dioxide.
    Type: Grant
    Filed: April 20, 1989
    Date of Patent: October 30, 1990
    Assignee: Eastman Kodak Company
    Inventors: Madhav Medra, Armin K. Weiss