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Optics Express, ISSN 1094-4087, 2015, Volume 23, Issue 8, pp. 10453 - 10466
We design rotating diffusers with deterministic complexamplitude transmission functions, which give rise to tailored spatial coherence modulation when... 
THIN ANNULAR SOURCES | MOVING DIFFUSER | OPTICS | OPTICAL COHERENCE | BEAMS
Journal Article
Optical Review, ISSN 1340-6000, 2/2019, Volume 26, Issue 1, pp. 145 - 151
To evaluate the influence of observer’s exposure time over speckle noise of laser displays, we developed the high-speed measurement method which can measure... 
Microwaves, RF and Optical Engineering | Diffused plate | Quantum Optics | Speckle contrast | Linear velocity | Optics, Lasers, Photonics, Optical Devices | Laser | Atomic, Molecular, Optical and Plasma Physics | Exposure time | Speckle-reduction device | Physics | MOVING DIFFUSER | OPTICS
Journal Article
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, ISSN 0954-4062, 02/2017, Volume 231, Issue 3, pp. 407 - 417
The behaviour of a fibre subject to the turbulent air flow in the diffuser in the spunbonding process is studied using a three-dimensional dynamics model in... 
air drag | Spunbonding | fibre dynamics | bead model | nonwovens | turbulence | MELT-BLOWING PROCESS | FLEXIBLE FIBERS | FORM | CONTINUOUS FILAMENT | MOVING BELT | SIMULATION | FLOW | ENGINEERING, MECHANICAL | THREADS LAID
Journal Article
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, ISSN 0954-4062, 2017, Volume 231, Issue 9, pp. 1622 - 1631
The random fibre oscillatory behaviour induced by turbulence in the diffuser of an industrial spunbonding rig is measured experimentally. The turbulent air... 
Spunbonding | Turbulence | Hot-wire anemometry | Fibre dynamics | Image processing | Nonwovens | hot-wire anemometry | image processing | fibre dynamics | MELT-BLOWING PROCESS | FORM | spunbonding | THREADS LAID | CONTINUOUS FILAMENT | MOVING BELT | turbulence | ENGINEERING, MECHANICAL | Mechanical engineering | Air flow
Journal Article
Optics Express, ISSN 1094-4087, 08/2013, Volume 21, Issue 17, pp. 19568 - 19578
A speckle noise suppression method in digital holography is proposed by the angular diversity with a phase-only spatial light modulator (SLM). The minimal... 
IMPROVEMENT | MOVING DIFFUSER | OPTICS | REDUCTION | MICROSCOPY | IMAGES
Journal Article
Optics Express, ISSN 1094-4087, 12/2017, Volume 25, Issue 25, pp. 31132 - 32141
The speckle reduction for laser projectors has been vigorously studied because speckle causes a serious deterioration in image quality. Most speckle reduction... 
MOVING DIFFUSER | DISPLAYS | OPTICS | CONTRAST REDUCTION | LIGHT
Journal Article
Optics Letters, ISSN 0146-9592, 03/2013, Volume 38, Issue 5, pp. 619 - 621
Holographic imaging may become severely degraded by a mixture of speckle and incoherent additive noise. Bayesian approaches reduce the incoherent noise, but... 
MOVING DIFFUSER | PROJECTION DISPLAYS | OPTICS | SPECKLE CONTRAST REDUCTION
Journal Article
Applied Physics Letters, ISSN 0003-6951, 08/2019, Volume 115, Issue 7, p. 71101
We design and fabricate an on-chip laser source that produces a directional beam with low spatial coherence. The lasing modes are based on the axial orbit in a... 
MOVING DIFFUSER | PHYSICS, APPLIED | SPECKLE REDUCTION | RING | Physics - Optics
Journal Article
Proceedings of SPIE - The International Society for Optical Engineering, ISSN 0277-786X, 2012, Volume 8560
Conference Proceeding
Journal of the Optical Society of America A: Optics and Image Science, and Vision, ISSN 1084-7529, 2013, Volume 30, Issue 2, pp. 227 - 232
An effective method of speckle suppression using one 2D diffractive optical element (DOE) moving with constant velocity based on the periodic Barker code... 
SYSTEM | MOVING DIFFUSER | DISPLAYS | OPTICS | CONTRAST REDUCTION
Journal Article
Sensors, ISSN 1424-8220, 05/2009, Volume 9, Issue 5, pp. 3666 - 3678
  A no-moving-parts-valve (NMPV) with a diffuser width of D = 500 microns was investigated in this study by numerical simulations at Reynolds numbers, ReD,... 
expansion valve angle | net flow | no-moving-parts-valve (NMPV)
Journal Article
by Li, HM
ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS, ISSN 1994-2060, 06/2009, Volume 3, Issue 2, pp. 147 - 163
A numerical model is developed for the thermal fluid flow process in a single stage through flow type centrifugal air moving fan designed for vacuum cleaners.... 
AEROACOUSTIC CHARACTERISTICS | COMPRESSOR | air moving | DESIGN | NOISE GENERATION | centrifugal | PERFORMANCE | vacuum cleaner | ENGINEERING, MECHANICAL | ported diffuser | IMPELLER | fan | MECHANICS | ENGINEERING, MULTIDISCIPLINARY | EFFICIENCY
Journal Article
Sensors, ISSN 1424-8220, 04/2009, Volume 9, Issue 5, pp. 3666 - 3678
A no-moving-parts-valve (NMPV) with a diffuser width of D = 500 microns was investigated in this study by numerical simulations at Reynolds numbers, Re(D),... 
No-moving-parts-valve (NMPV) | Net flow | Expansion valve angle
Journal Article
by Wang, CT and Leu, TS and Sun, JM
SENSORS, ISSN 1424-8220, 05/2009, Volume 9, Issue 5, pp. 3666 - 3678
A no-moving-parts-valve (NMPV) with a diffuser width of D = 500 microns was investigated in this study by numerical simulations at Reynolds numbers, Re-D,... 
ELECTROCHEMISTRY | CHEMISTRY, ANALYTICAL | INSTRUMENTS & INSTRUMENTATION | expansion valve angle | net flow | PRINCIPLE | no-moving-parts-valve (NMPV)
Journal Article
Optics Express, ISSN 1094-4087, 10/2014, Volume 22, Issue 21, pp. 25768 - 25775
In digital holography (DH) a mixture of speckle and incoherent additive noise, which appears in numerical as well as in optical reconstruction, typically... 
MOVING DIFFUSER | ILLUMINATION | STATISTICS | RECONSTRUCTION | DIGITAL HOLOGRAPHY | OPTICS | SPATIAL LIGHT-MODULATOR | MICROSCOPY | OBJECT | Holography - methods | Artifacts | Astronauts | Optical Phenomena | Image Processing, Computer-Assisted
Journal Article
Journal of the Optical Society of America A: Optics and Image Science, and Vision, ISSN 1084-7529, 2013, Volume 30, Issue 1, pp. 22 - 31
The mathematical model of a speckle-suppression method based on two Barker code-type diffractive optical elements (DOEs) moving in orthogonal directions is... 
FIBER | SYSTEM | MOVING DIFFUSER | DISPLAYS | ILLUMINATION | CONTRAST REDUCTION | OPTICS
Journal Article
by Deng, QL and Lin, BS and Wu, PJ and Chiu, KY and Fan, PL and Chen, CY
OPTICS EXPRESS, ISSN 1094-4087, 12/2013, Volume 21, Issue 25, pp. 31062 - 31071
We propose a system that reduces laser display speckles by vibrating the light pipe. A small displacement of the light pipe appears to allow the total... 
MOVING DIFFUSER | REDUCTION | CONTRAST | COLLOIDAL-DISPERSION | PROJECTION SYSTEMS | SCREENS | OPTICS
Journal Article
Applied Optics, ISSN 1559-128X, 12/2013, Volume 52, Issue 35, pp. 8617 - 8626
Speckle suppression in a two-diffuser system is examined. An analytical expression for the speckle space-time correlation function is derived, so that the... 
MOVING DIFFUSER | REDUCTION | BEAMS | LIGHT | SCREENS | PROJECTION DISPLAYS | OPTICS | Optics | Scattering (Physics) | Diffusion | Analysis | Grain size | Mathematical analysis | Exact solutions | Speckle patterns | Mathematical models | Diffusers | Rotating | Temporal logic
Journal Article
Optics Express, ISSN 1094-4087, 09/2014, Volume 22, Issue 19, pp. 22328 - 22339
We investigate the spatio-temporal scanning of a single-pixel row for building up synthetic interferograms or digital holograms, shifted each other of a... 
MOVING DIFFUSER | LIGHT-BEAM | CHIP | REDUCTION | BESSEL BEAMS | OPTICAL MICROMANIPULATION | OBJECTS | OPTICS | MICROSCOPY | WIDE-FIELD | SYNTHETIC-APERTURE | Algorithms | Interferometry - instrumentation | Equipment Design | Holography - instrumentation
Journal Article
Journal of Optics (United Kingdom), ISSN 2040-8978, 02/2019, Volume 21, Issue 4, p. 45602
It is well known that speckle reduction can be achieved by using multiple wavelength lasers and angular diversity in laser projectors. However, few studies... 
speckle | laser displays | projectors | MOVING DIFFUSER | PERCEPTION | CONTRAST REDUCTION | LIGHT | OPTICS
Journal Article
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