An information communication method of transmitting a signal is provided that uses a change in luminance. The method includes determining a pattern of the change in luminance by modulating the signal to be transmitted, and transmitting the signal by a light emitter changing in luminance according to the determined pattern. The pattern of the change in luminance is a pattern in which one of two different luminance values occurs in each arbitrary position in a predetermined duration. The determining a pattern of change in luminance includes dividing the predetermined duration into four duration units, so that one of two different luminance value occurs in one duration unit of the four duration units and the other luminance value of the two different luminance value occurs in three duration units of the four duration units, the three duration units are other than the one duration unit.

Information communication method

Disclosed herein is a lens driving device which is able to increase displacement without restriction, does not require a complex structure despite having a low power consumption, solves problems of friction and noise occurring in a gear mechanism, and realizes miniaturization and lightness. The lens driving device of the present invention includes a substrate which generates surface acoustic waves on a surface thereof, and a movable unit which is coupled to an optical lens and executes translation above the substrate using the surface acoustic waves. Therefore, the lens driving device of the present invention can implement translation of a lens without a separate mechanism, unlike conventional driving devices using motors and screws. Furthermore, the present invention satisfies the recent trend towards miniaturization and lightness, thus being usable in a variety of industrial fields that use optical lenses.

Lens driving device

A lens drive device may include a movable lens body provided with a lens, a support body which movably supports the movable lens body through a plate spring in an optical axis direction, and a magnetic drive mechanism for driving the movable lens body in the optical axis direction. The plate spring may include an outer side connecting part connected with the support body, an inner side connecting part connected with the movable lens body, and an arm part which is connected with the inner side connecting part and the outer side connecting part through an inner connecting portion and an outer connecting portion. The arm part may include a meandering part which comprises a plurality of extending parts which is extended in a radial direction is serially connected through inner side turning portions and outer side turning portions.

Lens drive device

An optical unit with a shake correction function may include an optical module having a movable body holding an optical element, a support body swingably supporting the movable body around two axial lines perpendicular to an optical axis of the optical element, and a swing drive mechanism structured to be capable of reciprocatedly swinging the movable body with respect to the support body around the two axial lines, and a rolling correction drive mechanism structured to be capable of reciprocatedly turning the optical module around the optical axis. The rolling correction drive mechanism includes a single phase motor in which the number of salient poles of a stator core around which a stator coil is wound is two times of the number of magnetic poles of a rotor magnet.

Optical unit with shake correcting function

A detection system for use with a communications system and an associated communication systems, methods, portable electronics devices and geolocation and/or reporting devices, the detection system comprising at least one radiation detector for receiving a radiation signal, wherein the at least one radiation detector comprises a plurality of sensing elements, and wherein the detection system is configured to detect the radiation signal using differing subsets of sensing elements at differing times and determine data encoded in the radiation signal based on the radiation detected by the different subsets of sensing elements. A transmission system and an associated receiver, communications system and methods, the transmission system comprising at least one transmitter element, the transmission system being configured to encode at least one data symbol or element by providing one or more signals on or in selected transmission carriers or channels, the selection of transmission carriers or channels being representative of the at least one data symbol or element, the transmission system being configured to vary the output power of the transmission system by varying the number of carriers or channels used to encode each data symbol or element. A transmission system for transmitting data as part of a communications system and an associated receiver, communications system and methods, the data comprising a plurality of data symbols or elements, the transmission system being configured to divide the data into at least a first data portion and a second data portion, wherein the first data portion is communicated by transmitting signals in selected carrier channels, wherein the transmission system is configured to encode at least one data symbol or element by selecting a relative order of at least one first carrier channel having a first operational state and at least one second carrier channel having a second operational state.

Communication apparatus and method

A visible light communication system having a transmission apparatus for modulating a transmission signal to a multiple-value number and a reception apparatus for demodulating a multiple-value modulated transmission signal is provided. The transmission apparatus includes a plurality of light emitters for emitting light in different colors, a chromaticity coordinates calculator for mapping a digital value to a chromaticity coordinates value, and a light intensity controller for controlling a light intensity of each of the light emitters based on the chromaticity coordinates value corresponding to the digital value. The reception apparatus includes a plurality of light receivers having different spectral characteristics, a chromaticity coordinates calculator for calculating a chromaticity coordinates value according to a received light intensity detected by each of the light receivers, and a demodulator for demodulating the digital value from the chromaticity coordinates value.

Visible light transmitter, visible light receiver, visible light communication system, and visible light communication method

An imaging lens that focuses light from a subject on an imaging surface, a lens holder that holds the imaging lens, a holder that holds the lens holder so as to be capable of moving along the optical axis of the imaging lens and capable of rotating in a tilting direction with respect to the optical axis, magnets and coils that independently cause drive forces to act in the direction along the optical axis with respect to the lens holder at at least three locations of the periphery of the lens holder, a Hall element that detects the attitude of the lens holder with respect to the optical axis, and a control apparatus that controls the magnitude and direction of the drive force of each coil in accordance with the detection output of the Hall element. In accordance with the present invention, in the cladding lens unit, it is possible to perform a movement in an optical axis direction of the imaging lens and a tilt movement with respect to the optical axis with a simple constitution.

Imaging lens unit and imaging apparatus

An electron beam apparatus includes at least one electron beam column. The at least one beam column includes an electron beam optical system to irradiate an electron beam on a surface of a sample, and a detection system to detect electrons generated from the electron beam. The electron beam optical system includes an object lens to focus the electron beam on a surface of the sample. The object lens includes an electrostatic lens having a first electrode to which a first voltage is applied, a second electrode that is grounded, a third electrode to which a second voltage is applied, and a fourth electrode that is grounded. The first through fourth electrodes sequentially arranged relative to the sample.

Electron beam apparatus

PROBLEM TO BE SOLVED: To provide a visible light transmission device which performs optical communication by using a color coordinate modulation, a visible light reception device, a visible light communication system, and a visible light communication method. SOLUTION: A visible light communication system having a transmission device which transmits a transmission signal to which a multilevel modulation is performed and a reception device which demodulates the transmission signal to which the multilevel modulation is performed is provided. The transmission device has a plurality of light emitting devices which emit different colors each other, a color degree coordinate calculator which associates the transmission signal with a color degree coordinate, and a light emission controller which controls a light emitting amount of a plurality of light emitting devices based on a color degree associated with the transmission signal. The reception device has a plurality of light receiving devices which receive different lights each other and detect the light receiving amount, the color degree coordinate calculator which calculates a color degree coordinate value based on the light receiving amount detected per color, and a demodulator which demodulates the transmission signal from the color degree coordinate value. COPYRIGHT: (C)2009,JPO&INPIT

Visible light transmission device, visible light reception device, visible light communication system, and visible light communication method

Provided is an image projecting apparatus, including: a polarization separator having a polarization separation surface which transmits or reflects illumination light and reflection light reflected from a reflective image display unit according to polarization directions of the illumination light and the reflection light; and a polarization direction rotating member, disposed between the polarization separator and the reflective image display unit, which rotates a polarization direction of light passing twice through the polarization direction rotating member by 90° about an optical axis of the polarization separator. The polarization separator and the polarization direction rotating member are disposed such that an axis bisecting an angle between a principal ray of the illumination light passing from the polarization separation surface to the reflective image display unit and a principal ray of the reflection light reflected from the reflective image display unit is approximately consistent with the optical axis of the polarization separator.

Image projecting apparatus

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Mitsuhiro Togashi

Author Tools

Chat about Author