Patents by Inventor Michael T. Pasfield

Michael T. Pasfield 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).

  • Patent number: 5680194
    Abstract: A periscopic telemicroscope for spectacles mounts over the periphery of one of the spectacle lenses and extends behind and towards the central axis of the spectacle lens to provide a high level of magnification while maintaining a cosmetically acceptable appearance. The telemicroscope has upper and lower housings with the upper housing holding an objective lens and a mirror and the lower housing holding a divergent lens and a prism. The mirror is oriented to reflect light received from the objective lens downward towards the divergent lens. The prism is oriented to reflect the light received from the divergent lens so that it exits the telemicroscope towards the wearer's eye and can be viewed by upwards rotation of the eye. Focusing is provided by a lever that is pivotally mounted on the upper housing and that cooperatively engages a guide pin which extends from the lower housing through a cam slot in the lever to move the lower housing toward and away from the central axis of the spectacle lens.
    Type: Grant
    Filed: September 20, 1994
    Date of Patent: October 21, 1997
    Inventor: Michael T. Pasfield
  • Patent number: 5076682
    Abstract: Telemicroscopic spectacles including a carrier eyeglass frame, spectacle lenses and a small or miniture multiple lens optical instrument mounted posteriorly relative to at least one of the lenses so as to extend from a front lens of the instrument disposed at or about such spectacle lens toward the wearer's eye such that a rear exit lens of the instrument is disposed adjacent the wearer's eyelash. The optical instrument is adjustable in optical length for focal adjustment by finger manipulating a focusing drive mounted on the spectacles and operable from at or near the outer periphery of the associated spectacle lens. The instrument is also supported on the spectacles from at or near the outer periphery of the associated spectacle lens. Several embodiments of remote focusing drives and remote support attachments are disclosed.
    Type: Grant
    Filed: June 29, 1989
    Date of Patent: December 31, 1991
    Inventor: Michael T. Pasfield