Patents by Inventor Masaya Ishii

Masaya Ishii 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).

  • Short-wavelength infrared imaging lens and imaging device including two lens groups of ?+ refractive powers having seven lenses of ?++??++ refractive powers or eight lenses of ?+++??++ refractive powers
    Patent number: 11480762
    Abstract: A short-wavelength infrared imaging lens includes first and second lens groups arranged in order from an object side. The first lens group has a negative refractive power as a whole. The second lens group has a positive refractive power as a whole and includes at least one positive lens that satisfies following conditional expressions (1) and (2): V2p>40??(1) N2p>1.7??(2) Here, N2p is a refractive index N [1.53] of the positive lens at a wavelength of 1.53 ?m, and the Abbe number V2p is an Abbe number of the positive lens in a short-wavelength infrared range and is defined as (N [1.53]?1)/(N [0.9]?N [2.325]) when refractive indexes of the at least one positive lens at wavelengths of 0.9 ?m, 1.53 ?m, and 2.325 ?m are represented by N [0.9], N [1.53], and N [2.325], respectively.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: October 25, 2022
    Assignee: KYOCERA SOC CORPORATION
    Inventors: Noboru Koizumi, Takao Tanabe, Masaya Ishii
  • Short-Wavelength Infrared Imaging Lens and Imaging Device
    Publication number: 20200319437
    Abstract: A short-wavelength infrared imaging lens includes first and second lens groups arranged in order from an object side. The first lens group has a negative refractive power as a whole. The second lens group has a positive refractive power as a whole and includes at least one positive lens that satisfies following conditional expressions (1) and (2): V2p>40??(1) N2p>1.7??(2) Here, N2p is a refractive index N [1.53] of the positive lens at a wavelength of 1.53 ?m, and the Abbe number V2p is an Abbe number of the positive lens in a short-wavelength infrared range and is defined as (N [1.53]?1)/(N [0.9]?N [2.325]) when refractive indexes of the at least one positive lens at wavelengths of 0.9 ?m, 1.53 ?m, and 2.325 ?m are represented by N [0.9], N [1.53], and N [2.325], respectively.
    Type: Application
    Filed: April 2, 2020
    Publication date: October 8, 2020
    Inventors: Noboru Koizumi, Takao Tanabe, Masaya Ishii