Patents by Inventor Yasunori Tanimoto

Yasunori Tanimoto 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 and device for semiconductor laser with controlled thickness of protective and optical films
    Patent number: 5430750
    Abstract: An object is to provide a semiconductor laser device having a continuous distribution in reflection and transmission at the end surface thereof, and a method therefor. In the semiconductor laser device having at the end surface thereof an end surface protection film for preventing oxidation of the end surface and an optical thin film for controlling reflectance, the end surface protection film has continuously-varying film thickness and the optical thin film has constant film thickness. By designing the end surface in a mirror-surface form and varying reflectance, characteristics such as high output, low power consumption, etc. can be improved.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: July 4, 1995
    Assignee: Sony Corporation
    Inventors: Yasunori Tanimoto, Makoto Futatsugi