نتایج جستجو برای: micromirror
تعداد نتایج: 564 فیلتر نتایج به سال:
We report the first demonstration of laser forward transfer using a real-time reconfigurable mask based on a spatial light modulator. The ability to dynamically change the projected beam shape and size of a coherent light source, in this case a 355-nm pulsed UV laser, represents a significant technological advancement in laser direct-write processing. The application of laser transfer technique...
We present the high-throughput fabrication technology of free-floating 3D microstructures combining fine-tuned grayscale lithography with optofluidic maskless lithography. Our system simultaneously modulated mask pattern in time phase using Digital Micromirror Device (DMD) in order to generate the different level of ultraviolet (UV) dose for photopolymerization, which causes to produce the diff...
To simulate in the laboratory the influence that a turbulent atmosphere has on light beams, we introduce a practical method for generating atmospheric wavefront distortions that considers digital holographic reconstruction using a programmable binary micromirror array. We analyze the efficiency of the approach for different configurations of the micromirror array and experimentally demonstrate ...
We report on a novel, compact twodimensional (2D) scanning micromirror for free space optical crosslinks for micro and nano satellites. Using a novel micromachined structure called MicroElevator by Self-Assembly (MESA) [1], the micromirror is suspended above the substrate by several hundred micrometers. Large mirror size and wide scanning range are achieved simultaneously. Large number of resol...
In this paper, we have addressed the design and simulation results of an electrothermally driven micromirror that is capable of producing in-plane as well as out-ofplane displacements. The coupled multiphysics simulation and study of the electrical, thermal and most importantly the mechanical behavior of the mirror system is done using COMSOL Multiphysics. The device has an in-plane displacemen...
While many advantages and the market potential of digital micromirror device (DMD) technology have been described [1-3] we intend to focus on the impact of a fully digital video display system. Redefining the architecture of an entire video system can dramatically decrease costs and increase performance from current display technologies (CRT and LCD). With recent disclosure of promising results...
Micromirrors fabricated by MEMS technology have demonstrated to be important sensing or actuating components in many industrial and biomedical applications such as laser scanning displays, optical switch matrices, and biomedical imaging systems.Micromirrors fabricated by MEMS technology have demonstrated to be important sensing or actuating components in many industrial and biomedical applicati...
We describe a new pushbroom hyperspectral imaging device that has no macro moving part. The main components of the proposed hyperspectral imager are a digital micromirror device (DMD), a CMOS image sensor with no filter as the spectral sensor, a CMOS color (RGB) image sensor as the auxiliary image sensor, and a diffraction grating. Using the image sensor pair, the device can simultaneously capt...
Fast Recoating Methods for the Projection-based Stereolithography Process in Micro- and Macro-Scales
The purpose of this paper is to present a recoating method for the development of a direct digital manufacturing (DDM) process that can be an order of magnitude faster than other currently available DDM processes. In the mask-image-projection-based Stereolithography (MIP-SL) process, projection light controlled by a Digital Micromirror Device (DMD) can quickly cure liquid photopolymer resin in ...
We describe an experimental technique for generating a quasi-monochromatic field with any arbitrary spatial coherence properties that can be described by the cross-spectral density function, W r1; r2 . This is done by using a dynamic binary amplitude grating generated by a digital micromirror device to rapidly alternate between a set of coherent fields, creating an incoherent mix of modes that ...
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