Fujifilm Corporation

Sony Corporation

Sony Semiconductor Solutions Corporation

Fujikura Limited

Sony Group Corporation

Hirokazu Hashimoto

Satoshi Yamamoto

Sho Murakoshi

Yoshihiro Nakai

Yosuke Sumiya

Hideaki Imai

Naoaki Tokai

Yuki Yamamoto

Toru Chinen

Tetsuya Watanabe

Akira Ono

Kousuke Watanabe

Hiroshige Okamoto

Toshiyuki Takahashi

Keisuke Saito

Masashi Shirata

Yoshiyuki Miyamoto

Masashi Ogiyama

Kazuhiro Nakagomi

Taichi Yoshio

Kiyotaka Fukagawa

Noribumi Shibayama

Taro Hashizume

Satoru Higashiyama

Hiroshi Uji

Seiji Hatano

Taisuke Fujimoto

Motoyuki Sugioka

Ryosuke Tanaka

There is provided a radio wave absorbing composition containing a magnetic powder and a binder. There is also provided a radio wave absorber containing a magnetic powder and a binder. The magnetic powder is a powder of a substitution-type hexagonal ferrite subjected to surface treatment with a surface treatment agent, and the binder is a polyamide.

Radio wave absorbing composition and radio wave absorber

There is provided a radio wave absorber containing a magnetic powder, and an aliphatic polyamide, in which an intensity ratio (α/γ) of a diffraction intensity α of an α crystal of the aliphatic polyamide to a diffraction intensity γ of a γ crystal of the aliphatic polyamide, which are determined by subjecting the radio wave absorber to measurement with an X-ray diffraction method, is 2.60 or less. There is also provided a radio wave absorbing article including this radio wave absorber.

Radio wave absorber and radio wave absorbing article

There is provided a radio wave absorbing composition containing a magnetic powder and a binder. There is also provided a radio wave absorber containing a magnetic powder and a binder. The magnetic powder is a powder of a substitution-type hexagonal ferrite subjected to surface treatment with a surface treatment agent, the surface treatment agent is a silicon-based compound, and the binder is an olefin-based resin.

There is provided a radio wave absorber including a magnetic powder and a binder, in which a volume filling rate of the magnetic powder in the radio wave absorber is 35% by volume or less, a transmission attenuation amount is 8.0 dB or more, and a reflection attenuation amount is 8.0 dB or more.

Radio wave absorber

A radio wave absorber including a radio wave absorbing layer containing a magnetic powder and a binder, in which a metal layer is not provided, a filling rate of the magnetic powder in the radio wave absorbing layer is 35% by volume or less, and in a case where the filling rate of the magnetic powder in the radio wave absorbing layer is denoted by P % by volume and a thickness of the radio wave absorbing layer is denoted by Q mm, the following relationship is satisfied, 0.65≤(P/100)×Q, and the compound.

Radio wave absorber and compound

The powder of the magnetoplumbite-type hexagonal ferrite is an aggregate of particles of a compound represented by Formula (1), and, in a particle size distribution based on number measured by a laser diffraction scattering method, in a case where a mode value is defined as a mode diameter, a diameter at a cumulative percentage of 10% is defined as D10 and a diameter at a cumulative percentage of 90% is defined as D90, the mode diameter is equal to or greater than 5 μm and less than 10 μm and an expression of (D90−D10)/mode diameter≤3.0 is satisfied. In Formula (1), A represents at least one metal element selected from the group consisting of Sr, Ba, Ca, and Pb, and x satisfies 1.5≤x≤8.0.AFeAlO  Formula(1)

Powder of magnetoplumbite-type hexagonal ferrite, method for producing the same, and radio wave absorber

A method for producing a powder of a magnetoplumbite-type hexagonal ferrite which is an aggregate of particles of a compound represented by Formula (1), the method including: a step A of adjusting a pH of an aqueous solution containing a Fe salt, an Al salt, and at least one metal element salt selected from the group consisting of a Sr salt, a Ba salt, a Ca salt, and a Pb salt to exceed 8.0, thereby obtaining a reaction product; a step B of drying the reaction product obtained in the step A, thereby obtaining a dried product; and a step C of firing the dried product obtained in Step B, thereby obtaining a fired product, and application. In Formula (1), A represents at least one metal element selected from the group consisting of Sr, Ba, Ca, and Pb, and x satisfies 1.5≤x≤8.0.AFeAlO  Formula (1)

Magnetoplumbite-type hexagonal ferrite and method for producing radio wave absorber

There is provided a radio wave absorber including a powder of a hexagonal ferrite; and a binder, in which the radio wave absorber has a squareness ratio in a range of 0.40 to 0.60.

There is provided a radio wave absorber including a magnetic powder and a binder, in which a volume filling rate of the magnetic powder in the radio wave absorber is 35% by volume or less, and a volume filling rate of a carbon component in the radio wave absorber is 0% by volume or more and 2.0% by volume or less.

A magnetoplumbite-type hexagonal ferrite powder containing a powder of a magnetoplumbite-type hexagonal ferrite represented by Formula (1) and a powder of a compound represented by Formula (2), in which a magnetic field strength Hα, which corresponds to 90% of a magnetization quantity obtained in a case where an external magnetic field of 50 kOe is applied, satisfies 19 kOe≤Hα≤28 kOe, a radio wave absorber, and a method of controlling resonance frequency of a magnetoplumbite-type hexagonal ferrite powder are provided. In Formula (1), A represents at least one metal element selected from the group consisting of Sr, Ba, Ca, and Pb, and x satisfies 1.5≤x≤8.0. In Formula (2), Arepresents at least one metal element selected from the group consisting of Sr, Ba, Ca, and Pb.AFeAlO  Formula (1)AAlO  Formula (2)

Magnetoplumbite-type hexagonal ferrite powder, radio wave absorber, and method of controlling resonance frequency of magnetoplumbite-type hexagonal ferrite powder

A powder mixture of a magnetoplumbite-type hexagonal ferrite is a mixture of powders of two or more kinds of compounds represented by Formula (1), the two or more kinds of compounds represented by Formula (1) are two or more kinds of compounds having different values of x in Formula (1), and are a powder mixture satisfying a relationship of x−x≤0.2, in a case where a maximum value of x is defined as xand a minimum value of x is defined as x, in two or more kinds of compounds having different values of x in Formula (1), and the application. In Formula (1), A represents at least one metal element selected from the group consisting of Sr, Ba, Ca, and Pb, and x satisfies 1.5≤x≤8.0.AFeAlO  Formula (1)

Powder mixture of magnetoplumbite-type hexagonal ferrite, method for producing the same, and radio wave absorber

An information processing device includes an external information detection unit () that detects an object that is present outside a moving body based on data detected by an external detection unit, an internal information detection unit () that detects a direction of a driver's face inside the moving body based on data detected by an internal detection unit, a determination unit () that determines whether a position of the object detected by the external information detection unit () and the direction of the driver's face detected by the internal information detection unit () are in a same direction, and an output control unit () that outputs an alert to a driver more strongly when the position of the object is not in the same direction as the direction of the driver's face, as compared to a case where the position of the object is in the same direction as the direction of the driver's face.

Information processing device, moving body, information processing method, and program

This technology relates to an information processing apparatus for accurately notifying a mobile object of a position of a moving body nearby, and to an information processing method, a program, and a mobile object for use with the information processing apparatus. The information processing apparatus includes a moving body detection section that detects the moving body near the mobile object on the basis of information input from sensors, and a sound output control section that shifts the position of a sound image of a notification sound giving notification of the position of the moving body in keeping with a detected position thereof in motion. This technology can be applied to apparatuses, systems, or vehicles that provide driver assistance for preventing collision or contact with the moving body, for example.

Information processing apparatus, information processing method, program, and mobile object

Display panel with an animated graphical user interface

An information presentation apparatus includes an acquisition unit, an asymmetric acceleration generating unit, and a signal generating unit. The acquisition unit acquires at least one of information inside a vehicle or information outside the vehicle. The asymmetric acceleration generating unit presents haptic feedback information to a user via a steering unit provided in the vehicle by generating asymmetric acceleration. The signal generating unit generates a driving signal on the basis of information acquired by the acquisition unit and send the driving signal to the asymmetric acceleration generating unit.

Growing community of inventors

Kanagawa, Japan

Hirokazu Hashimoto