Ricoh Company, Ltd.

Yusuke Ohta

Noboru Murayama

Atsushi Sakai

Jun Watanabe

Jian Chen

Yasuhiro Satoh

Hiroko Mano

Hirofumi Horikawa

Toshiyuki Ikeoh

Aiko Ohtsuka

Kengo Yamamoto

Takumi Satoh

Keiji Omura

Kazuyo Hashimoto

Hiroyuki Minamide

A light-source device includes a plurality of light emitters; and a plurality of optical elements through which laser beams emitted from the plurality of light emitters pass. The plurality of optical elements includes: a first optical element configured to emit a laser beam of a first divergence angle; and a second optical element configured to emit a laser beam of a second divergence angle smaller than the first divergence angle.

Light-source device, detection device, and electronic apparatus

An optical device includes: a substrate having a first surface, and a second surface opposite of the first surface; a plurality of surface emitting laser elements provided on the first surface of the substrate and configured to emit light in a direction intersecting the first surface; a plurality of optical elements disposed on the second surface so as to respectively correspond to the plurality of surface emitting laser elements; and an anti-reflection structure between the substrate and the plurality of optical elements.

Optical device, lighting apparatus, measuring apparatus, part-inspecting apparatus, robot, electronic device, and movable object

A screen member irradiated with image display light is provided. The screen member includes an optical element having an optical surface configured to reflect or refract light, wherein an absolute value of a local curvature of the optical surface changes in one direction of a plane perpendicular to an optical axis of the optical element, and becomes a local minimum at at least one position.

Screen member, image display apparatus, and object apparatus

An imaging device includes an imaging unit configured take a plurality of images, the imaging unit including a plurality of imaging parts each configured to acquire an imaging data item relevant to one of the plurality of images taken, and a wiring part configured to transmit a plurality of the imaging data items acquired by the plurality of imaging parts. The wiring part includes an external part forming an outline of the wiring part, and a cable part disposed inside the external part. The plurality of imaging parts are disposed along a longitudinal direction of the wiring part, and the imaging unit is configured to acquire the plurality of the imaging data items corresponding to a plurality of imaging positions, and transmit the plurality of the imaging data items by using the cable part.

Imaging device, imaging system, and imaging method

An imaging system is disclosed that performs authentication of a user. The system includes one or more manipulation detecting parts that detect one or more manipulations by the user related to an imaging process, one or more biometric information acquiring parts that acquire biometric information of the user when the manipulation detecting parts detect the manipulations by the user, and an authentication determining part that determines an authentication result of the authentication based on the biometric information acquired by the biometric information acquiring parts.

Imaging system and authentication method

A document access control system for determining whether to allow a client to access a target document file according to a security policy set in a server, the system includes a cache timing determination part for determining the timing for caching policy determination data corresponding to the target document file in the client, a policy determination data obtaining part for obtaining the policy determination data from the server according to a report from the cache timing determination part, a policy determination data storage part for storing the obtained policy determination data in correspondence with the target document file, and a file access control part for controlling access to the target document file according to the policy determination data stored in the policy determination data storage part in a case where the user of the client requests access to the target document file when the client is in an offline mode.

Document access control system, data processing apparatus, program product and method for performing document access control

A computer-executable information tracking method, an image forming apparatus, an information processing apparatus, and a program to adequately track the information flow of a paper document are disclosed. The method includes a first detecting step of, whenever an input or output of information is performed using a paper as a medium, detecting paper identification information that uniquely identifies the paper from other paper; a storing step of associating and storing the paper identification information with information regarding the input or output of information in a recording device; a second detecting step of detecting the paper identification information of a designated paper; an information searching step of searching for the information regarding the input or output of information on the designated paper by comparing the paper identification information of the designated paper with the paper identification information stored in the recording device.

Information tracking method, image forming apparatus, information processing apparatus, and information tracking program

A digital signing method in a digital signing apparatus that provides a digital signature to electronic data, including: inputting data to be signed with the digital signature; presenting attribute information of one or more signature keys; displaying said attribute information of said one or more signature keys presented to a user; creating signature data by using said inputted data and a signature key corresponding to said attribute information of signature key selected by said user from said attribute information of said one or more signature keys displayed; and saving signature data created or a signature file created based on said signature data in a storage unit.

Digital signing method, digital signing apparatus, portable information processing apparatus, digital signing system, and recording medium

A method and a system for correcting output color component values for a color image output used in devices such as a printer and a digital copier based upon independently selected input and output values and an interpolated curve line based upon a predetermined conditional polynomial equation.

Method of and system for correcting output values based upon conditional

A system for and a method visualizes a color system for specifying a portable color system representation. The portable color system representation does not require a large table or a large amount of calculation. The same system and the method allows the user to interactively edit each of color components of a given color system so as to generate a portable color system framework representation between unrelated devices whose input and output ranges are different.

Growing community of inventors

Kanagawa, Japan

Yusuke Ohta