Hoya Corporation

Teijin Limited

Nagano Keiki Co., Ltd.

Other

Juridical Foundation the Chemo-Sero-Therapeutic Research Institute

Hoya Candeo Optronics Corporation

Hercofina

Sony Corporation

Seiichi Yokoyama

Yukimitsu Sekimori

Fumio Kaise

Yoshiatsu Yokoo

Yoshiharu Takazawa

Kaoru Kagami

Hidekuni Asai

Michiyori Miura

Toshihisa Kurosawa

Hiroji Ito

Kenji Nagura

Sho Amano

Takeo Shima

Yoshitaka Yoneda

Hiroshi Mizokami

Toshiaki Sonehara

Michiyuki Tokashiki

Takanori Urasaki

Yoshinobu Miyatsu

Takami Arai

Naohiko Maruno

Masashi Fujino

Shinichi Takeda

Takao Fujii

Masamichi Motoki

Koshi Namie

Michio Yamamoto

Provided is a polarizing element, which is made into an assembly of metal elements by utilizing the fact that the plasmon resonance wavelengths of metal elements are different for the polarization direction of a light to irradiate the metal elements. The sum of the geometrically sectional areas of the metal elements in a plane substantially normal to the propagation direction of the irradiating light is smaller than the area of the irradiated region of the light, and the sum of the absorbing sectional areas of the metal elements in the plasmon resonance wavelengths is five times or more as large as the area of the irradiated region.

Polarization element

A polarizing glass includes shape-anisotropic metal particles oriented and dispersed in a glass substrate, the concentration of the metal particles having a distribution in which in the travel direction of light in which a polarizing function is exhibited, the concentration is substantially zero near one of the surfaces of the glass substrate and near the other surface, gradually increases from one of the surfaces of the glass substrate to the other surface, becomes a value within a predetermined range in the glass substrate, and then gradually decreases toward the other surface.

Polarizing glass, optical isolator, and method for producing polarizing glass

There are disclosed an optical filtering module and various optical devices using the filtering module. The optical filtering module has an optical filter for transmitting, attenuating or reflecting light having a certain wavelength range, a first optical system having an optical fiber for guiding light to be transferred to the optical filter, a second optical system having an optical fiber for guiding light transferred from the optical filter, the second optical system being opposingly arranged to the first optical system while interposing the optical filter therebetween and an outer cylindrically shaped glass holder for holding therein the optical filter, the first optical system and the second optical system secured thereto.

Optical filtering module and optical devices using such optical filtering module

A groove portion to stay the adhesive agent penetrated into either one of closely contacted surfaces of the rod lens and the optical filter is formed, thereby, the penetration of the adhesive agent into the optical path is prevented.

Optical filter module and optical apparatus using the same

In a pressure sensor chip (,), an extension (,) is provided on a lower glass (,) and a signal receiving portion (,) of a conductive layer is formed from a surface (,A) of an extension (,) to an upper surface (,B) of an upper glass (,). Accordingly, the signal receiving portion (,) does not touch a circuit substrate when the pressure sensor chip (,) is mounted to the circuit substrate and the like, thereby preventing electric failure such as noise pickup of the signal receiving portion (,). Further, since the signal receiving portion (,) is formed by the conductive layer, no particular space for receiving electric potential from a diaphragm is necessary, thereby enabling size reduction of the pressure sensor chip (,). Since an anodic-bonding electrode (,) is disposed on a border (,) and is cut and removed in separating as the pressure sensor chip (,), visual check is not obstructed and contamination by being peeled-off can be prevented.

Sensor chip, laminated wafer for sensor chip and manufacturing method of sensor chip

In an electrostatic capacitance type transducer which has a substrate, a movable electrode confrontingly placed to the substrate in a movable manner through a space, a fixed electrode arranged on a detecting face confronting the movable electrode of the substrate, and a signal receiving portion which is conductive with the fixed electrode and derived from the detecting face of the substrate, the fixed electrode and the signal receiving portion are made of metals which are different with each other in their compositions. That is, the fixed electrode is made of metal which has a high corrosion resistance and is not likely to outbreak a hillock, and the signal receiving portion is made of metal which is easy for bonding. Alternatively, both the fixed electrode and the signal receiving portion are made of titanium. Through this, since the outbreak of the hillock can be prevented, the displacement of the movable electrode can be stably and precisely detected for a long time, and the shortening of the life of the fixed electrode caused by corrosion can be prevented. As to the signal receiving portion, an excellent bonding property can be ensured.

Electrostatic capacitance type transducer

The present invention provides an electrostatic capacitance type transducer and a method for producing the same, with the ensured sufficient connecting strength and insulation between a movable electrode and a fixed electrode and smooth production. In the electrostatic capacitance type transducer having: a substrate; a movable electrode placed on the opposite side of a space from the substrate and having displacement in relation to the substrate; and a fixed electrode formed on a detecting face of the substrate which is opposite to the movable electrode, an insulation film is formed on the approximately whole surface, including the fixed electrode, of the detecting face of the substrate, in which the substrate and the movable electrode are connected through the insulation film to each other by means of the anode-contact.

Electrostatic capacitance type transducer and method for producing the

Medium for culturing animal cells

Fed batch culture method for protein secreting cells

A solid-state laser device which employs a bi-cylindrical lens as a focusing lens for focusing excitation light emitted from a semiconductor laser to pump a laser medium. Further, the radius of curvature of each cylindrical surface of the bi-cylindrical lens is selected such that a region of the laser medium to be pumped by a horizontal component of the pumping light and another region of the laser medium to be pumped by a vertical component of the pumping light are contained in a predetermined region of the laser medium. Thereby, output laser light which excels in transverse mode characteristics can be efficiently obtained without increasing the number of surfaces of lenses composing the focusing lens system. Moreover, there is provided a solid-state laser device which can be relatively small-sized and easily regulated.

Solid state laser device with a bi-cylindrical covexo-convex lens having

In a solid-state laser device comprising, as a solid-state laser medium, a nonlinear optical crystal, such as Nd.sub.x Y.sub.1-x Al.sub.3 (BO.sub.3).sub.4, which generates a primary laser beam of a fundamental wavelength and which can convert the primary laser beam into a subsidiary laser beam of a harmonic wavelength, a pair of optical elements is brought into contact with both ends of the solid-state laser medium to form a resonator for the primary laser beam. The optical elements may be composed of optical thin films or reflectors attached to the ends of the medium. At least one of the ends of the medium has a spherical surface convex outwards of the medium so as to reflect the primary laser beam into the medium.

Solid-state laser device capable of generating a harmonic laser beam at

Disclosed is a process for the recovery of aromatic carboxylic acid or ester thereof from the residue fraction of the oxidation or esterification reaction mixture resulting from the oxidation or oxidation and esterification of an aromatic compound having at least one methyl or formyl group directly bonded to a ring carbon atom. The process comprises treating the residue fraction with hydrogen and a hydrogenation catalyst.

Recovery of aromatic carboxylic acid or ester thereof from residue

A process for preparing 2,6-dimethylnaphthalene by the selective isomerization of an isomeric mixture of dimethylnaphthalenes(DMN), characterized in that

Process for preparing 2,6-dimethylnaphthalenes

Growing community of inventors

Tokyo, Japan

Seiichi Yokoyama