Nippon Sheet Glass Company, Limited

Olympus Corporation

National Institute of Advanced Industrial Science and Technology

Niles Co., Ltd.

Keiji Tsunetomo

Tadashi Koyama

Shigeo Kittaka

Shuhei Tanaka

Kazuaki Oya

Tatsuhiro Nakazawa

Hirotaka Koyo

Hideki Imanishi

Masatoshi Nara

Hideki Hashizume

Satoru Kusaka

Kazuya Ohkawa

Yasuhiro Saito

Kenjiro Hamanaka

Shinya Okamoto

Junji Nishii

Harunobu Yoshida

Masahiro Oikawa

Yasushi Nakamura

Fumitoshi Kobayashi

Takeshi Hidaka

Tatsumi Tokuda

Takahiro Asai

Akihiro Koyama

Junji Kurachi

Masahide Wakisaka

Hiroaki Kasai

Masamichi Hijino

Kentaro Yamada

Takahiro Hashimoto

Katsuhide Shimmo

Hideshi Nagata

Shiro Sato

Yasuji Sasaki

Vladimir V Serikov

Tomonori Imamura

Masanori Shojiya

An optical component includes: a first layer made of a first material having a first refractive index, the first layer including a first principal surface and a second principal surface opposite to the first principal surface; and a second layer made of a second material having a second refractive index different from the first refractive index, the second layer including a third principal surface and a fourth principal surface opposite to the third principal surface, and the first layer and the second layer are stacked such that the second principal surface and the third principal surface are in contact. A lens is formed on the first principal surface of the first layer, and a vortex profile is formed on the third principal surface of the second layer.

Optical component and method of manufacturing optical component

Provided is a illumination device having a sufficiently wide irradiation angle and a uniform light intensity within a predetermined range even when using a light source that emits light similar to light with a small spread angle, such as a laser, or to parallel light. This illumination device includes a light source including at least one light emitting portion; a first optical element that receives light output from the light source and outputs the light while expanding an output angle thereof and a second optical element that receives light output from the first optical element and outputs the light while further expanding an irradiation angle thereof.

Illumination device

A radiation angle changing element bonded to a housing includes: a glass substrate; and a resin layer provided on the glass substrate and having an optically functioning part. In a bonding portion bonded to the housing, the resin layer is not formed on the glass substrate.

Radiation angle changing element and light emitting device

A method for producing a glass substrate according to the present invention includes the steps of: (I) forming a through hole () in a glass sheet (); (II) forming a resin layer () on a first principal surface of the glass sheet () using a resin composition sensitive to light having a predetermined wavelength &#x3bb;; (III) photoexposing an area of the resin layer () that covers the through hole () by irradiating the area with light U having the wavelength &#x3bb;and applied from the direction of a second principal surface of the glass sheet (); and (IV) forming a through-resin hole () by removing the area photoexposed in the step (III). The glass sheet () protects the resin layer () from the light U so as to prevent the resin layer () from being photoexposed by beams of the light U that are incident on the second principal surface of the glass sheet () in the step (III).

Substrate with glass sheet, resin layer and through-glass via

An image sensor unit includes: a linear light source that illuminates a document with a light; a first erecting equal-magnification lens array and a second erecting equal-magnification lens array arranged in the stated order away from the document so as to receive a light reflected from the document and form an erecting equal-magnification image; a slit provided on an intermediate imaging plane between the first erecting equal-magnification lens array and the second erecting equal-magnification lens array; a diffraction grating that disperses a light output from the second erecting equal-magnification lens array; and a linear image sensor that receives a light dispersed by the diffraction grating.

Image sensor unit and image reading device

A method for producing a glass substrate with through glass vias according to the present invention includes: irradiating a glass substrate () with a laser beam to form a modified portion; forming a first conductive portion () on a first principal surface of the glass substrate (), the first conductive portion () being positioned in correspondence with the modified portion (); and forming a through hole () in the glass substrate () after formation of the first conductive portion by etching at least the modified portion () using an etchant. This method allows easy handling of a glass substrate during formation of a conductive portion such as a circuit on the glass substrate, and is also capable of forming a through hole in the glass substrate relatively quickly while preventing damage to the conductive portion such as a circuit formed on the glass substrate.

Method for producing glass substrate with through glass vias and glass substrate

Method for producing glass substrate and glass sheet

A glass substrate processing method includes irradiating laser light L onto a glass substratesuch that the laser light L is focused within the glass substrate, thereby forming a high density areathat has a higher density than areas where the laser light L is not irradiated around the portion where the laser light L is focused; and performing chemical etching on the glass substrateusing an etching solution such that at least a portion of the high density area is allowed to remain, thereby forming a projectionon a surfaceof the glass substrate

Glass substrate processing method and glass component

A waveguide elementincluding a photonic crystal waveguide including a corethat is constituted by a photonic crystal having a refractive index periodicity at least in one direction, and that propagates an electromagnetic wave in a direction in which the photonic crystal does not have the refractive index periodicity. At least one of materials forming the coreconstituted by the photonic crystal, and at least a portion of a cladding in contact with a side face of the coreare constituted by a fluid. Thus, it is possible to provide a waveguide element that can be used as a light control element, can be produced easily and also can be applied to an optical sensor.

Waveguide element, method for producing the waveguide element, and optical sensor

A transmissive diffraction grating includes a substrate and a plurality of ridges provided in a mutually parallel manner at constant periodicity p on the substrate. The ridges include a first layer, a second layer (refractive index n: 2.0-2.5), and a third layer with non-continuous refractive indices, arranged in that order from the substrate outward. The first layer adjacent the substrate, in terms of its refractive index, exhibits a difference of 0.1 or less relative to the substrate. The second layer has a higher refractive index than the first layer and third layer and satisfies the following conditions. For a single ridge, the cross-sectional area S of a cross-section of the second layer perpendicular to the longitudinal direction of said ridge is in the range of 0.75pk&#x3b8;/(n&#x2212;1)&#x3c;S&#x3c;1.20pk&#x3b8;/(n&#x2212;1), were, &#x3b8; is the angle of incidence onto the diffraction grating face, expressed in radian units, and the constant kis 1.1. The thickness dof the second layer is in the range of 0.70pk&#x3b8;n/(n&#x2212;1)&#x3c;d&#x3c;1.30pk&#x3b8;n/(n&#x2212;1), where, the constant kis 0.69.

Transmissive diffraction grating, and spectral separation element and spectroscope using the same

A surface of a substrate is coated with a sol solution containing metal alkoxide. A gelled material of the sol solution is pressed against a molding tool while the gelled material is kept soft. Thus, the gelled material is molded. Then, the gelled material is hardened. As a result, protrusions of the hardened gel layerare formed on the substrate so that an irregular texture substrate is formed. A multilayer thin film constituted by a plurality of layers of at least two kinds of materials with different refractive indexes is laminated on a surface of the irregular texture substrate.

Multilayer structure and method for manufacturing the same

Titanium is added in the form of atoms, a colloid, or ions to a glass to be subjected to laser processing in which the ablation or vaporization caused by the energy of an absorbed laser light is utilized. Since titanium can be incorporated into the glass through melting, the threshold value for processing can be easily regulated by changing the amount titanium to be added and a material having evenness in processability can be obtained.

Glass for laser processing

An optical waveguide deviceis configured to include a straight waveguideand bottleneck portionsprovided in two locations in the longitudinal direction of the waveguide. In the optical waveguide device, light confinement is implemented in all surfaces. This permits provision of an optical waveguide device, wherein a reflector or resonator can be provided in a waveguide using a simple configuration.

Optical waveguide device

A waveguide element using a photonic crystal having a refractive index periodicity in one direction is provided with an input portion causing propagation light due to a band on a Brillouin zone boundary within the photonic crystal.

Waveguide element using photonic crystal

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Osaka, Japan

Keiji Tsunetomo