A micromirror array with annular partitioning for high-speed random-access axial focusing

High-speed phase modulation using the RPC method with a digital micromirror-array device.

An improved implementation of the reverse phase contrast (RPC) method for rapid optical transformation of amplitude patterns into spatially similar phase patterns using a high-speed digital micromirror-array device (DMD) is presented. Aside from its fast response, the DMD also provides an electronically adjustable and inherently aligned input iris that simplifies the optimization of the RPC sys...

Designing a Coreless High-Speed Axial-Flux PM Generator for Microturbines

A Breakthrough in Sputtering Target Inspections: Ultra-High Speed Phased Array Scanning with Volume Focusing

In the manufacturing industry, more and more plate parts are inspected to detect tiny defects. As the rate of manufacturing increases, new and innovative inspection methods are required. This paper presents the method and results for inspecting sputtering targets, which are typically used in LCD manufacturing. The flaws are either inclusions or disbonds, in the range of 0.5mm in diameter, or th...

High speed multiphoton axial scanning through an optical fiber in a remotely scanned temporal focusing setup

Simultaneous spatial and temporal focusing is used to acquire high speed (200Hz), chemically specific axial scans of mouse skin through a single-mode fiber. The temporal focus is remotely scanned by modulating the group delay dispersion (GDD) at the proximal end of the fiber. No moving parts or electronics are required at the distal end. A novel GDD modulation technique is implemented using a p...

High-speed Noise Cancellation with Microphone Array

We propose the use of a microphone array based on independent component analysis as a method for high-speed elimination of noise in speech input to mobile terminals. The effectiveness of the proposed method is confirmed by evaluation experiments that reproduce an actual mobile environment.