Patents Assigned to Minnesota Mining and Manfuacturing Company
  • Light fixture including a partially collimated beam of light and reflective prisms having peaks lying on a curved surface
    Patent number: 5054885
    Abstract: A light fixture has a source of partially collimated light for emitting light having an axis of collimation. A structured surface has a plurality of prisms that are rendered reflective for reflecting light from the light source out of the cavity. The peaks of the prisms define a surface at least a portion of which makes an acute angle with the axis of collimation.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: October 8, 1991
    Assignee: Minnesota Mining and Manfuacturing Company
    Inventor: Jeffrey J. Melby