Ricoh Company, Ltd.

Shinji Satoh

Shunichi Sato

Akihiro Itoh

Naoto Jikutani

Takuro Sekiya

Satoru Sugawara

Takashi Takahashi

Akira Sakurai

Kazuya Miyagaki

Atsuyuki Watada

Koei Suzuki

Ken Kanai

Masayoshi Katoh

Teruyuki Furuta

Shuuichi Hikichi

Keiichi Suzuki

Atsushi Nakafuji

Kazuhiro Harasaka

Kazuhiko Adachi

Yasushi Yamaguchi

Hiroyoshi Shouji

Takuma Katori

Takahito Uga

Hideharu Kamiyama

Yukio Yonemura

Masayuki Hayano

An alkali metal cell is disclosed, including a substrate in which is formed an opening which penetrates from one face to the other face thereof; a first transparent substrate bonded to the other face of the substrate; and a second transparent substrate bonded to the one face of the substrate, wherein an alkali metal is sealed into a space surrounded by the first transparent substrate and the second transparent substrate in the opening of the substrate, wherein, in the substrate and the second transparent substrate, the space is enclosed by a bonding between a first bonding metal layer formed by a first bonding metal and a second bonding metal layer formed by a second bonding metal, and wherein the second bonding metal layer has a bonding temperature higher than that of the first bonding metal layer.

Alkali metal cell, atomic oscillator, and alkali metal cell fabricating method

Disclosed is a menu distribution system that provides a menu, which is viewable in a conventional manner and is customized for each customer. A customer allows a read/write device to read a customer ID information storage medium storing customer ID information. The read/write device transmits the customer ID information to a menu server. The menu server has a customer information storage unit that stores, for each customer, attribute information such as food preferences. The menu server selects a menu item most suitable for the customer identified by the transmitted customer ID information, by comparing customer attribute information and menu items stored in a menu item information storage unit. Menu image data is generated based on the selected menu item and is transmitted to the read/write device. The read/write device writes the received menu image data to a memory of a paper like display.

Menu distribution system, menu server, read/write device, method, and computer readable recording medium

A surface-emission laser diode includes a distributed Bragg reflector tuned to wavelength of 1.1 &#x3bc;m or longer, wherein the distributed Bragg reflector includes an alternate repetition of a low-refractive index layer and a high-refractive index layer, with a heterospike buffer layer having an intermediate refractive index interposed therebetween with a thickness in the range of 5-50 nm.

Surface-emission laser diode operable in the wavelength band of 1.1-1.7 micrometers and optical telecommunication system using such a laser diode

A surface-emission laser diode includes a distributed Bragg reflector tuned to wavelength of 1.1 &#x3bc;m or longer, wherein the distributed Bragg reflector includes an alternate repetition of a low-refractive index layer and a high-refractive index layer, with a heterospike buffer layer having an intermediate refractive index interposed therebetween with a thickness in the range of 5&#x2013;50 nm.

Surface-emission laser diode operable in the wavelength band of 1.1-1.7mum and optical telecommunication system using such a laser diode

Surface-emission laser diode operable in the wavelength band of 1.1-7&#x3bc;m and optical telecommunication system using such a laser diode

Growing community of inventors

Kanagawa, Japan

Shinji Satoh