Patents by Inventor Ryouta Ishikawa

Ryouta Ishikawa 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).

  • Publication number: 20170307737
    Abstract: A scanning optical system, includes a mirror unit having a first mirror surface and a second mirror surface which incline to a rotation axis; and a light projecting system having a light source. A light flux emitted from the light source is reflected on the first mirror surface of the mirror unit, thereafter, reflected on the second mirror surface, and then, projected so as to scan in a main scanning direction onto an object in accordance with rotation of the mirror unit. The light flux emitted from the second mirror surface becomes a plurality of spot lights on the object side, and the plurality of spot lights are arranged along a direction intersecting with the main scanning direction.
    Type: Application
    Filed: October 6, 2015
    Publication date: October 26, 2017
    Inventors: Ryouta ISHIKAWA, Shoji KOGO
  • Publication number: 20170299701
    Abstract: A scanning optical system, includes a mirror unit equipped with a first mirror surface and a second mirror surface each of which inclines to a rotation axis; and a light projecting system which includes at least one light source to emit a light flux toward the first mirror surface. A light flux emitted from the light source is reflected on the first mirror surface of the mirror unit, thereafter, reflected on the second mirror surface, and then, projected so as to scan in a main scanning direction onto an object in accordance with rotation of the mirror unit, and in a case where a direction included in a main scanning plane is set to 0 degree, the light flux reflected on the second mirror surface is polarized in a range within an angle of ±30 degrees to the main scanning plane.
    Type: Application
    Filed: October 6, 2015
    Publication date: October 19, 2017
    Inventors: Ryouta ISHIKAWA, Shoji KOGO
  • Publication number: 20170293138
    Abstract: A scanning optical system, includes a mirror unit having a first mirror surface and a second mirror surface which incline to a rotation axis; and a light projecting system having a light source. A light flux emitted from the light source is reflected on the first mirror surface of the mirror unit, thereafter, reflected on the second mirror surface, and then, projected so as to scan in a main scanning direction onto an object in accordance with rotation of the mirror unit. In the case where a virtual plane is set in a range including the object, a light flux reflected on the second mirror surface has, upon entering the virtual plane, a cross sectional shape in which a length in a direction orthogonal to the main scanning direction is longer than a length in the main scanning direction.
    Type: Application
    Filed: October 6, 2015
    Publication date: October 12, 2017
    Applicant: KONICA MINOLTA, INC.
    Inventors: Ryouta ISHIKAWA, Shoji KOGO
  • Publication number: 20170219696
    Abstract: An object detection device includes a first optical transceiver that generates a first beam flux and receives a scattered portion of the first beam flux, a second optical transceiver that generates a second beam flux and receives a scattered portion of the second beam flux, and a mirror unit that rotates around a rotation axis. The first beam flux is reflected by the mirror unit and is scanned based on the rotation of the mirror unit, and the scattered portion of the first beam flux is generated by scattering of the first beam flux by an object. The scattered portion of the first beam flux is reflected by the mirror unit before being received by a light receiving portion of the first optical transceiver, and the second beam flux is reflected by the mirror unit and is scanned based on the rotation of the mirror unit.
    Type: Application
    Filed: February 2, 2017
    Publication date: August 3, 2017
    Applicant: Konica Minolta, Inc.
    Inventors: Shuhei Hayakawa, Hikaru Nagasawa, Masashi Kageyama, Ryouta Ishikawa
  • Publication number: 20170184705
    Abstract: A mirror unit, a distance measurement device and a laser radar, and a mobile body and a fixed object having the mirror unit and the distance measurement device or the laser radar. The mirror unit includes a plurality of pairs of first reflecting surfaces and second reflecting surfaces inclined relative to a rotation axis, and extending in directions crossing each other. The mirror unit rotates about the rotation axis. In the mirror unit, a beam emitted from a light source is reflected on a first reflecting surface, and then reflected on a second reflecting surface paired with the first reflecting surface. The beam is scanned over an object with the rotation of the mirror unit. In the mirror unit, the first and second reflecting surfaces are formed, respectively, on first and second reflecting members which are combined to select an emission angle of a beam emitted from the mirror unit.
    Type: Application
    Filed: December 16, 2014
    Publication date: June 29, 2017
    Applicant: KONICA MINOLTA INC.
    Inventors: Hideyuki FUJII, Ryouta ISHIKAWA, Naoki KANEKO, Daisuke SAWANOBORI
  • Publication number: 20170030833
    Abstract: The present invention pertains to a surface plasmon enhanced fluorescence analysis device and a surface plasmon enhanced fluorescence measurement method which use GC-SPFS and make it possible to detect a substance to be detected with high sensitivity. This surface plasmon enhanced fluorescence measurement device has: a light source for irradiating the diffraction grating of a chip with excited light; a polarizer for removing linearly polarized light from fluorescent light emitted from a fluorescent substance on the diffraction grating; and a photodetector for detecting the linearly polarized light removed by the polarizer.
    Type: Application
    Filed: April 8, 2014
    Publication date: February 2, 2017
    Inventors: Yukito NAKAMURA, Takatoshi KAYA, Kosuke NAGAE, Akitoshi NOZAKI, Fumio NAGAI, Ryouta ISHIKAWA, Akiyuki NAMATAME
  • Publication number: 20160047902
    Abstract: The present invention provides a scanning optical system and radar that can suppress longitudinal distortion and spot rotation of a spot light radiated on an object. A light flux emitted from a light source is reflected on a first mirror surface of a mirror unit, then, proceeds to a second mirror surface, further is reflected on the second mirror surface, and is projected so as to scan on an object correspondingly to rotation of the mirror unit. The light flux emitted from the light projecting system is made longer in a sub scanning angle direction than in a scanning angle direction in a measurement range of the object and satisfies the following conditional expression, |·1?90|×|·|·255 . . . (1); in the expression, ˜1 is an intersection angle (°) between the first mirror surface and the second mirror surface, and · is a rotation angle (°).
    Type: Application
    Filed: April 8, 2014
    Publication date: February 18, 2016
    Inventors: Ryouta ISHIKAWA, Hiroyuki MATSUDA, Masashi KAGEYAMA, Junichiro YONETAKE, Hideyuki FUJII, Hiroyuki SHINDO
  • Publication number: 20130163101
    Abstract: An image capturing lens is disclosed, which is compact and capable of capturing an image at a wide angle though realizing low cost performance by enabling mass productions of wafer-scale lenses, and an image capturing device is disclosed, which uses this image capturing lens. For the purpose of attaining short focusing, a wide angle of view can be ensured by optimally disposing the power of a first lens block and the power of a second lens block so that a value of a conditional formula (1) becomes higher than a lower limit. Hereat, a wider angle can be attained by strengthening the positive power of the second lens block against the first lens block without increasing the overall length. While on the other hand, the value of the conditional formula (1) becomes lower than an upper limit, whereby the power of the second lens block is prevented from being excessively strengthened, the lens units of the second lens block can be configured with a small sag quantity, and moldability can be kept preferable, 0.
    Type: Application
    Filed: September 5, 2011
    Publication date: June 27, 2013
    Inventors: Yasunari Fukuta, Kazuki Matsui, Ryouta Ishikawa, Takashi Kawasaki