Progress towards omnidirectional transformation optics with lenses

We study, theoretically, omni-directional Euclidean transformation-optics (TO) devices comprising planar, light-ray-direction changing, imaging, interfaces. We initially studied such devices in the case when the interfaces are homogeneous, showing that very general transformations between physical and electromagnetic space are possible. We are now studying the case of inhomogeneous interfaces. This case is more complex to analyse, but the inhomogeneous interfaces include ideal thin lenses, which gives rise to the hope that it might be possible to construct practical omni-directional TO devices from lenses alone. Here we report on our progress in this direction

Circularly Polarized Terminal Antennas for Emerging Wireless Systems

Several types of omni-directional Circularly Polarized (CP) antennas are presented, which are employed by three different types of feedlines: Coplanar Waveguide (CPW) fed, Microstrip fed, and Differential-fed, to achieve omni-directional CP performances. The Dual-frequency Omni-directional CP antenna is proposed by using slot and inductor embedded into radiated patches. These omnidirectional CP antennas have potential application on GPS, WLAN and RFID systems

GRAIL, an omni-directional gravitational wave detector

A cryogenic spherical and omni-directional resonant-mass detector proposed by the GRAIL collaboration is described.Comment: 5 pages, 4 figs., contribution to proceedings GW Data Analysis Workshop, Paris, nov. 199

Omni-directional anisotropic molecular trap Patent

Omnidirectional anisotropic molecular trap, used with vacuum pump to simulate space environments for testing spacecraft component

PROSES PEMBUATAN DUDUKAN OMNI DIRECTIONAL WHEEL PADA MESIN PEL OTOMATIS

DudukanOmniDirectionalWheel terdiridari4bagianyaituhubwheeldepan, hub wheel belakang, dudukan motor, dan poros. Tujuan penyusunan laporan Proses Pembuatan Dudukan Omni Directional Wheel adalah untuk mengetahui : (1) membuat dudukan Omni Directional Wheel pada Mesin Pel Otomatis yang sesuai design ,(2) menegetahui Standart Operasional Prosedur saat proses produksi dudukan Omni Directional Wheel pada Mesin Pel Otomatis, (3) waktu yang diperlukan dalam pembuatan Dudukan Omni Directional Wheel, (4) hasil kinerja Dudukan Omni Directional Wheel. Metode yang digunakan dalam pembuatan Dudukan Omni Directional Wheel yaitu : (1) mengidentifikasi gambar kerja yang digunakan, (2) menentukan langkah- langkah SOP proses pembuatan Dudukan Omni Directional Wheel, (3) menentukan alat dan mesin yang digunakan (4) melakukan uji pada Dudukan Omni Directional Wheel.Hasil pembuatan dari Dudukan Omni Directional Wheel adalah sebagai berikut. (1) Berhasil membuat Dudukan Omni directional wheel sesuai design, dengan bentuk yang sesuai dan dimensi dari bahan masih berada dalam batas toleransi.(2) Berhasil membuat langkah-langkah berbentuk standar operasional prosedur produksi. Langkah- langkah yang dimaksud secara garis besar meliputi identifikasi gambar kerja, identifikasi dan persiapan bahan, identifikasi dan persiapan alat dan mesin, pengukuran dan dan pemotongan bahan, pembubutan, pengeboran, penekukan, dan assembly.(3) Waktu yang diperlukan untuk menyelesaikan Dudukan Omni Directional Wheel adalah 300 menit. (5) Hasil kinerja dari pembuatan Dudukan Omni Directional Wheel cukup baik

Space and camera path reconstruction for omni-directional vision

In this paper, we address the inverse problem of reconstructing a scene as well as the camera motion from the image sequence taken by an omni-directional camera. Our structure from motion results give sharp conditions under which the reconstruction is unique. For example, if there are three points in general position and three omni-directional cameras in general position, a unique reconstruction is possible up to a similarity. We then look at the reconstruction problem with m cameras and n points, where n and m can be large and the over-determined system is solved by least square methods. The reconstruction is robust and generalizes to the case of a dynamic environment where landmarks can move during the movie capture. Possible applications of the result are computer assisted scene reconstruction, 3D scanning, autonomous robot navigation, medical tomography and city reconstructions