Patents by Inventor Nobuhito Nishida

Nobuhito Nishida 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).

  • Surface light source device and adjusting method of chromaticity thereof
    Patent number: 6508564
    Abstract: In this surface light source device, light is incident from a plurality of point light sources 2 arranged on a one side end surface of a light guide plate 1, is reflected on a light reflecting surface 11 on a rear surface of the light guide plate 1, and is emitted from a front surface of the light guide plate 1. The point light sources 2 comprise white light emitting diode elements. Two white light emitting diode elements out of six of the white light emitting diode elements having chromaticity outermost from a center of an aimed chromaticity range in opposite hue directions are arranged in an approximately center of a group of the white diode elements.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: January 21, 2003
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Satoshi Kuwabara, Hiroshi Yamashita, Toru Yamamura, Nobuhito Nishida, Masashi Ochiiwa, Michiaki Satou