Patents by Inventor Seung-Ho H. Baek

Seung-Ho H. Baek 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).

  • Method of manufacturing a molded lenslet array
    Patent number: 7119962
    Abstract: An imaging apparatus (10) to image wise expose desired microcapsules (38) within a photosensitive media (44) with an image exposure device (12) to harden the desired microcapsules applying pressure to the exposed photosensitive media rupturing the unexposed microcapsule (40), releasing the image-forming material (48) encapsulated within to form an image on the photosensitive media, the exposure device having a molded lenslet array (14) with a printed lens mask improving channel cross talk, aberrations, and reducing flair.
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: October 10, 2006
    Assignee: Eastman Kodak Company
    Inventors: Roger S. Kerr, Seung-Ho H. Baek
  • Method of registering a molded lenslet array with an array of light emitting elements
    Patent number: 7088383
    Abstract: A method of registering a molded lenslet array (14) with an array of light emitting elements (54) includes etching an array of light source registration recesses (42) in a silicon pad (28). At least two registration recesses (30) are etched in the silicon pad. The registration recesses and the light source registration recesses have the same depth. Sidewalls of the registration recesses and the light source registration recesses have the same slope angle. A light emitting element is located in at least one of the light source registration recesses. The molded lenslet array is located at a predetermined distance from the bottom of the registration recesses (36). The molded lenslet array which is in a x-direction is located by matching a tapered locating surface of a first and second registration pin (72, 74) to a first and second tapered locating surface (68, 70) of a first and second registration recess (76, 78).
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: August 8, 2006
    Assignee: Eastman Kodak Company
    Inventors: Seung-Ho H. Baek, Wesley H. Bacon, Roger S. Kerr
  • Imaging apparatus and method for exposing a photosensitive material
    Patent number: 6812949
    Abstract: An imaging apparatus (10) having a multiple channel image exposure device (12). Improved thermal compensation is achieved by means of mounting an array of light emitting elements (30) on a printed circuit board (28) having at least one thermal via (26) for each light emitting element to thermally control the temperature of the light emitting element. Selected microcapsules (38) within a photosensitive media (44) are exposed with the multiple channel image exposure device to harden the desired microcapsules. Pressure applied to the exposed photosensitive media ruptures the unexposed microcapsule (40), releasing the image-forming material (48) encapsulated within to form an image on the photosensitive media.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: November 2, 2004
    Assignee: Eastman Kodak Company
    Inventors: Paul R. Switzer, Roger S. Kerr, Seung-Ho H. Baek, Wesley H. Bacon