Patents by Inventor Tatsuro IWASAKI

Tatsuro IWASAKI 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).

  • Patent number: 10931942
    Abstract: An evaluation system includes an input unit that inputs a test chart image acquired by imaging a test chart including a plurality of characters, an evaluation unit that evaluates performance of an imaging unit using the test chart image, an image generation unit that generates an evaluation image representing an evaluation of the evaluation unit at each position on the test chart image with a color, and a display unit that displays the evaluation image along with the test chart image or in a superimposed manner on the test chart image.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: February 23, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Yasunobu Kishine, Tatsuro Iwasaki
  • Publication number: 20200201159
    Abstract: Provided are a projection apparatus and a projection method capable of uniformly projecting a projection image, in which blurring is suppressed, onto a projection target having projected and recessed portions outside the focal depth of a projection lens by using the afterimage effect. The projection apparatus includes: a light source; a projection image generation unit; a projection lens that projects a projection image generated by the projection image generation unit onto a projection target having projected and recessed portions, where a defocus optical transfer function at a specific frequency has two or more local maximum values and a second largest local maximum value is equal to or greater than 0.5 times a first largest local maximum value; an oscillation mechanism that oscillates the projection lens in a direction of an optical axis T; and a control unit that controls an amplitude and a period of the oscillation mechanism.
    Type: Application
    Filed: March 3, 2020
    Publication date: June 25, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Tatsuro IWASAKI, Yasunobu KISHINE
  • Publication number: 20190215511
    Abstract: An evaluation system includes an input unit that inputs a test chart image acquired by imaging a test chart including a plurality of characters, an evaluation unit that evaluates performance of an imaging unit using the test chart image, an image generation unit that generates an evaluation image representing an evaluation of the evaluation unit at each position on the test chart image with a color, and a display unit that displays the evaluation image along with the test chart image or in a superimposed manner on the test chart image.
    Type: Application
    Filed: March 12, 2019
    Publication date: July 11, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Yasunobu KISHINE, Tatsuro IWASAKI
  • Patent number: 9813628
    Abstract: An imaging module includes an image stabilizing movable portion which has a lens group and a magnetic member, an imaging element which images a subject through the lens group, an elastic support portion which supports the image stabilizing movable portion so as to be movable in a direction perpendicular to an optical axis of the lens group and to be inclinable around an axis perpendicular to the optical axis, and a suppression portion which mechanically prevents inclination of the image stabilizing movable portion, in which the suppression portion has an extension portion which is provided in the image stabilizing movable portion and extends in an outer circumferential direction of the image stabilizing movable portion, and a guide portion which overlaps the extension portion when viewed from the direction of the optical axis, and prevents inclination of the image stabilizing movable portion by abutting the extension portion.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: November 7, 2017
    Assignee: FUJIFILM Corporation
    Inventor: Tatsuro Iwasaki
  • Patent number: 9778460
    Abstract: An imaging lens consists of three lenses of, in order from an object side, a first lens having a biconcave shape, and an object-side surface of which is aspherical, a second lens having negative refractive power and a third lens having positive refractive power with a convex surface facing an image side. The absolute value of a curvature radius of an image-side surface of the third lens is less than the absolute value of a curvature radius of an object-side surface of the third lens.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: October 3, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Tatsuro Iwasaki, Michio Cho
  • Patent number: 9678310
    Abstract: An imaging lens is constituted essentially by four or more lenses, including, in order from the object side to the image side: a first lens having a positive refractive power; a second lens having a negative refractive power; and a plurality of other lenses. The conditional formulae below are satisfied. 0.8<TL/f<1.0??(1) 1.0<f/fl<3.0??(2) 2.03 mm<f<5.16 mm??(3) 1.0 mm<fl<3.0 mm??(4) wherein f is the focal length of the entire lens system, fl is the focal length of the first lens, TL is the distance along the optical axis from the surface of the first lens toward the object side to the paraxial focal point position at the image side in the case that the portion corresponding to back focus is an air converted length.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: June 13, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Tatsuro Iwasaki, Yasunobu Kishine
  • Publication number: 20170090192
    Abstract: An imaging lens consists of three lenses of, in order from an object side, a first lens having a biconcave shape, and an object-side surface of which is aspherical, a second lens having negative refractive power and a third lens having positive refractive power with a convex surface facing an image side. The absolute value of a curvature radius of an image-side surface of the third lens is less than the absolute value of a curvature radius of an object-side surface of the third lens.
    Type: Application
    Filed: September 6, 2016
    Publication date: March 30, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Tatsuro IWASAKI, Michio CHO
  • Publication number: 20160301875
    Abstract: An imaging module includes an image stabilizing movable portion which has a lens group and a magnetic member, an imaging element which images a subject through the lens group, an elastic support portion which supports the image stabilizing movable portion so as to be movable in a direction perpendicular to an optical axis of the lens group and to be inclinable around an axis perpendicular to the optical axis, and a suppression portion which mechanically prevents inclination of the image stabilizing movable portion, in which the suppression portion has an extension portion which is provided in the image stabilizing movable portion and extends in an outer circumferential direction of the image stabilizing movable portion, and a guide portion which overlaps the extension portion when viewed from the direction of the optical axis, and prevents inclination of the image stabilizing movable portion by abutting the extension portion.
    Type: Application
    Filed: June 21, 2016
    Publication date: October 13, 2016
    Applicant: FUJIFILM Corporation
    Inventor: Tatsuro IWASAKI
  • Patent number: 9335516
    Abstract: An imaging lens substantially consists of five lenses consisting of, in order from the object side: a first lens having a positive refractive power and having a meniscus shape with the convex surface toward the object side; a second lens having a biconcave shape; a third lens having a positive refractive power and having a meniscus shape with the convex surface toward the image side; a fourth lens having a positive refractive power and having a convex surface toward the image side; and a fifth lens having a negative refractive power, wherein a predetermined conditional expression is satisfied.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: May 10, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Takuya Tanaka, Tatsuro Iwasaki, Michio Cho
  • Publication number: 20160004047
    Abstract: An imaging lens is constituted essentially by four or more lenses, including, in order from the object side to the image side: a first lens having a positive refractive power; a second lens having a negative refractive power; and a plurality of other lenses. The conditional formulae below are satisfied. 0.8<TL/f<1.0??(1) 1.0<f/fl<3.0??(2) 2.03 mm<f<5.16 mm??(3) 1.0 mm<fl<3.0 mm??(4) wherein f is the focal length of the entire lens system, fl is the focal length of the first lens, TL is the distance along the optical axis from the surface of the first lens toward the object side to the paraxial focal point position at the image side in the case that the portion corresponding to back focus is an air converted length.
    Type: Application
    Filed: September 17, 2015
    Publication date: January 7, 2016
    Inventors: TATSURO IWASAKI, YASUNOBU KISHINE
  • Patent number: 9207432
    Abstract: An imaging lens substantially consists of five lenses consisting of, in order from the object side: a first lens having a positive refractive power and having a meniscus shape with a convex surface toward the object side; a second lens having a biconcave shape; a third lens having a positive refractive power and having a meniscus shape with a convex surface toward the image side; a fourth lens having a meniscus shape with a convex surface toward the image side; and a fifth lens having a negative refractive power and having a concave surface toward the object side.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: December 8, 2015
    Assignee: FUJIFILM Corporation
    Inventors: Takuya Tanaka, Tatsuro Iwasaki, Michio Cho
  • Publication number: 20150085386
    Abstract: An imaging lens substantially consists of five lenses consisting of, in order from the object side: a first lens having a positive refractive power and having a meniscus shape with the convex surface toward the object side; a second lens having a biconcave shape; a third lens having a positive refractive power and having a meniscus shape with the convex surface toward the image side; a fourth lens having a positive refractive power and having a convex surface toward the image side; and a fifth lens having a negative refractive power, wherein a predetermined conditional expression is satisfied.
    Type: Application
    Filed: September 22, 2014
    Publication date: March 26, 2015
    Inventors: Takuya TANAKA, Tatsuro IWASAKI, Michio CHO
  • Publication number: 20150085385
    Abstract: An imaging lens substantially consists of five lenses consisting of, in order from the object side: a first lens having a positive refractive power and having a meniscus shape with a convex surface toward the object side; a second lens having a biconcave shape; a third lens having a positive refractive power and having a meniscus shape with a convex surface toward the image side; a fourth lens having a meniscus shape with a convex surface toward the image side; and a fifth lens having a negative refractive power and having a concave surface toward the object side.
    Type: Application
    Filed: September 18, 2014
    Publication date: March 26, 2015
    Inventors: Takuya TANAKA, Tatsuro IWASAKI, Michio CHO