Sony Corporation

Dexerials Corporation

Murata Manufacturing Co., Ltd.

Masaharu Senoue

Kenichi Kawase

Yosuke Hosoya

Tsutomu Nagahama

Guohua Li

Masashi Enomoto

Hironori Yoshida

Kazuaki Endoh

Hiroyuki Itou

Akira Takamuku

Takakazu Hirose

Shunichi Kajiya

Kazuhiko Morisawa

Kenichi Sasaki

Yuji Takahashi

Kentaro Okuyama

Masayuki Ihara

Takashi Watanabe

Norimasa Furukawa

Masayuki Iwama

Kazuhito Shimoda

Satoshi Sato

Takashi Fujinaga

Rie Tsubo

Shinjiro Umeya

Motoki Endo

Satoshi Kawamura

Hitomi Madokoro

An optical element is provided includes an optical layer having a flat incident surface on which light is incident and a wavelength-selective reflective layer disposed in the optical layer. Of light incident on the incident surface at an incident angle (&#x3b8;, &#x3c6;), the optical element selectively directionally reflects light in at least one specific wavelength range in at least one direction other than a specular reflection direction (&#x2212;&#x3b8;, &#x3c6;+180&#xb0;) while transmitting light in at least one wavelength range other than the specific wavelength range, and is transparent to light in at least one wavelength range other than the specific wavelength range.

Optical element and method for producing the same

A lithium ion secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode contains a lithium composite oxide. The negative electrode contains a material including at least one of silicon Si and tin Sn as a constituent element. The lithium composite oxide includes lithium Li having a composition ratio a, a first element having a composition ratio b, and a second element having a composition ratio c as a constituent element. The first element including two kinds or more selected from among manganese Mn, nickel Ni, and cobalt Co, and including at least manganese. The second element including at least one kind selected from among aluminum Al, titanium Ti, magnesium Mg, and boron B. The composition ratios a to c satisfy the relationships of 1.1&#x3c;a&#x3c;1.3, 0.7&#x3c;b+c&#x3c;1.1, 0&#x3c;c&#x3c;0.1, and a&#x3e;b+c.

Lithium ion secondary battery, electric tool, electric vehicle, and power storage system

A lithium secondary battery includes a positive electrode, a negative electrode, and an electrolyte solution. The positive electrode contains a positive electrode active material including element M2 incorporated in a crystal structure in a surface layer area of a complex oxide, the oxide including the element M1 and being represented by the following formula (1), M2 being different from M1. The element M2 is at least one kind selected from the group consisting of magnesium Mg, calcium Ca, titanium Ti, zirconium Zr, sulfur S, fluorine F, iron Fe, copper Cu, boron B, aluminum Al, phosphorus P, carbon C, manganese Mn, nickel Ni, and cobalt Co.Li(MnCoNi)M1O&#x2003;&#x2003;(1) M1 is at least one kind of aluminum, magnesium, zirconium, titanium, barium Ba, boron, silicon Si, and iron, a satisfies 0&#x3c;a&#x3c;0.25, b satisfies 0.5&#x2266;b&#x3c;0.7, c satisfies 0&#x2266;c&#x3c;1&#x2212;b, d satisfies 0.01&#x2266;d&#x2266;0.2, and e satisfies 0&#x2266;e&#x2266;1.

Lithium secondary battery, positive electrode active material, positive electrode, electric tool, electric vehicle, and power storage system

Wavelength selective optical element for reflecting light

A lithium ion secondary battery including a positive electrode; a negative electrode; and an electrolytic solution, wherein the positive electrode includes a first lithium composite oxide and a second lithium composite oxide expressed by following formula (1) as a positive electrode active material, and wherein the second lithium composite oxide has a charge capacity greater than the first lithium composite oxideLi(NiM1M2)O&#x2003;&#x2003;(1)

Lithium ion secondary battery, positive electrode active material, positive electrode, electric tool, electric vehicle, and power storage system

A lithium-ion secondary battery allowed to improve cycle characteristics and initial charge-discharge characteristics is provided. The lithium-ion secondary battery includes a cathode; an anode; and an electrolytic solution. The anode includes an anode active material layer including a plurality of anode active material particles. The anode active material particles each include a core section and a coating section applied to a part or a whole of a surface of the core section, and the core section includes a silicon-based material (SiO: 0&#x2266;x&#x3c;0.5) and the coating section includes an amorphous or low-crystalline silicon-based material (SiO: 0.5&#x2266;y&#x2266;1.8).

Lithium-ion secondary battery, anode for lithium-ion secondary battery, power tool, electric vehicle and energy storage system

The present application provides a display apparatus including: a display panel having a plurality of pixels disposed in a matrix; a first polarizer; a second polarizer; a surface emitting light source; a third polarizer; and a polarization control element whose orientation of a transmission axis changes according to a control signal. A control section outputs a control signal that controls orientation of the transmission axis of the polarization control element so that a polarization axis of transmission light of the polarization control element is oriented in a direction crossing the transmission axis of the first polarizer in a part corresponding to a pixel position of black display and is oriented in a direction parallel to the transmission axis of the first polarizer in a part corresponding to a pixel position of white display.

Display apparatus comprises three polarizers and a polarization control element whose orientation of a transmission axis changes according to a control signal

A liquid-crystal display that can inhibit the coloring of an image when a liquid-crystal panel is viewed from an oblique direction is provided. An optical filter is disposed at the forward end of a liquid-crystal panel and has different transmittances between a light component that travels in an oblique direction and a light component that travels in a direction normal to the multilayer, where both of the light components have a predetermined wavelength range. In the case where a wide-color-gamut light source, such as LEDs, is used as a light sources of a backlight unit, when the liquid-crystal panel is viewed from an oblique direction, the entire image area tends to be reddish, and the color temperature tends to decrease. In this case, the optical filter is configured such that the intensity of a visible red light component is selectively reduced such that the intensity of a visible blue light component is increased, thereby inhibiting the reddening of an image area when viewed from an oblique direction.

Optical element, liquid crystal panel, and liquid crystal display

There is provided an infrared signal receiver which includes a photo-detector unit receiving light in a predetermined infrared wavelength region, sent from a remote operating unit; and an optical element disposed in front of the photo-detector unit, allowing the light of the predetermined infrared wavelength region to transmit therethrough in preference to other infrared wavelength region. In the receiver, the predetermined signal wavelength region is a region of 930 nm or longer and 960 nm or shorter, and mean transmittance of light of the optical element in the predetermined signal wavelength region is larger than mean transmittance of light in a region of 900 nm or longer and shorter than 930 nm, and/or, mean transmittance of light in a region of longer than 960 nm and 1,020 nm or shorter.

Infrared signal receiver, liquid crystal display and optical element

An optical multilayer film and reflective screen are provided. An optical multilayer film includes an optical laminate A including a plurality of types of optical layers having different refractive indices laminated on each other, the optical laminate A having a reflection characteristic in which the reflectance peak intensities in the red, green, and blue wavelength regions are substantially the same; and an optical laminate B including a plurality of types of optical layers having different refractive indices laminated on each other, the optical laminate B having a reflection characteristic in which the bottom of the reflectance curve lies in the green wavelength region.

Optical multilayer film and reflective screen

Growing community of inventors

Fukushima, Japan

Masaharu Senoue