Patents by Inventor Romeo I. Mercado

Romeo I. Mercado 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).

  • Color-corrected Petzval lens systems
    Patent number: 4702569
    Abstract: A method is described for selecting optical materials to use in designing color-corrected optical systems. Various dioptric, catadioptric and anamorphic optical systems are described, which use only two different types of optical materials to obtain precise axial color correction at three, four or five wavelengths (depending upon the particular optical materials), with only very small chromatic aberration occurring at wavelengths between the precisely color-corrected wavelengths. Examples of color-corrected lens systems comprising more than two glasses are also described.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: October 27, 1987
    Assignee: Lockheed Missiles & Space Company, Inc.
    Inventor: Romeo I. Mercado
  • Two-glass photographic objective color-corrected at four wavelengths
    Patent number: 4681407
    Abstract: A photographic objective comprising six lens elements is well-corrected for both monochromatic and chromatic aberrations, and is color-corrected at four wavelengths in a band extending from the visible to the near infrared regions of the electromagnetic spectrum with only negligible secondary and high-order spectra at wavelength between those for which color correction is achieved. The design form for the objective has been optimized for a focal length of 200 mm at an aperture ratio of f/4 and a field of view of 12.degree. without vignetting.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: July 21, 1987
    Assignee: Lockheed Missiles & Space Company, Inc.
    Inventor: Romeo I. Mercado