3D holographic near-eye display based on Fraunhofer diffraction using metalens as an eyepiece

2021 ◽  
Author(s):  
Zeqing Yu ◽  
Chang Wang ◽  
Lingmei Chen ◽  
Qin Xie ◽  
Xinyu Liu ◽  
...  
Keyword(s):  
Fraunhofer Diffraction

Ultrasonic Wave Detection in Atmospheric Pressure Plasma Using Fraunhofer Diffraction Effect

PIERS Online ◽  
2010 ◽  
Vol 6 (7) ◽  
pp. 636-639
Author(s):  
Toshiyuki Nakamiya ◽  
Fumiaki Mitsugi ◽  
Shota Suyama ◽  
Tomoaki Ikegami ◽  
Yoshito Sonoda ◽  
...  
Keyword(s):  
Ultrasonic Wave ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Diffraction Effect ◽  
Fraunhofer Diffraction ◽  
Wave Detection ◽  
Pressure Plasma

Study of Fraunhofer Diffraction Pattern from a Circular Aperture Using an Optical Fiber Microprobe

2011 ◽  
Vol 378-379 ◽  
pp. 565-568
Author(s):  
Wan Maisarah Mukhtar ◽  
P. Susthitha Menon ◽  
Sahbudin Shaari
Keyword(s):  
Optical Fiber ◽  
Diffraction Pattern ◽  
Light Propagation ◽  
Optical Power ◽  
Transverse Motion ◽  
Circular Aperture ◽  
Fraunhofer Diffraction ◽  
Fresnel Number ◽  
Function Profile ◽  
Effect Of Light

Fraunhofer diffraction pattern from a circular aperture with the diameter of 10µm was observed using an optical fiber microprobe. The optical fiber microprobe started to detect optical power when the distance between the probe and the circular aperture was more than 292µm. When the probe was moved in a lateral motion, the light propagation showed a Bessel function profile. When the optical fiber microprobe was moved from 293µm to 309µm from the centre of the circular aperture in a transverse motion, the power detected was not consistent with a continuation of maxima and minima due to the effect of light propagation from the circular aperture. We also observed that the distance between the probe and the centre of the circular aperture was directly proportional with the radius of focused spot and inversely proportional with the Fresnel number.

Babinet's principle in the Fraunhofer diffraction by a finite thin wire

Optik ◽  
2011 ◽  
Vol 122 (16) ◽  
pp. 1434-1436 ◽  
Author(s):  
Yusuf Ziya Umul
Keyword(s):  
Thin Wire ◽  
Fraunhofer Diffraction

Optical intensity far-field distribution of MEMS micro-mirror arrays by Fraunhofer diffraction

2021 ◽  
Vol 14 (10) ◽  
pp. 102006
Author(s):  
Bin Zhang ◽  
Yu Zhang ◽  
Guohui Yang ◽  
Chunhui Wang
Keyword(s):  
Field Distribution ◽  
Far Field ◽  
Optical Intensity ◽  
Fraunhofer Diffraction

scholarly journals Field test of a new snow-particle counter (SPC) system

1993 ◽  
Vol 18 ◽  
pp. 149-154 ◽  
Author(s):  
Takeshi Sato ◽  
Tadashi Kimura ◽  
Taminoe Ishimaru ◽  
Toshisuke Maruyama
Keyword(s):  
Wind Speed ◽  
Mass Flux ◽  
Particle Trajectory ◽  
Particle Diameter ◽  
Blowing Snow ◽  
Fraunhofer Diffraction ◽  
Wind Speed Profile ◽  
Particle Counter ◽  
Sampling Volume ◽  
Snow Particle

The optical system of the snow-particle counter (SPC), which was developed by Schmidt in 1977, has been improved. A laser diode is used as a light source, achieving uniform sensitivity to a blowing snow particle regardless of the location of particle trajectory within a sampling volume. The light entering a slit, which may be affected by a blowing snow particle, is perfectly detected by use of a piano-cylindrical lens and a dual-type photodiode. A signal processor has been developed to get output voltage proportional to the mass flux of blowing snow.From the estimates based on blowing snow characteristics and wind speed profile, the new SPC system can accurately detect all the particles of effective sizes at least at a height above 0.1 m when the wind speed at a height of 1 m is less than 15 m s−1.Considering the Fraunhofer diffraction by both the wire and the particle, the relation between a particle diameter and sensor output of the new SPC system is derived from the calibration with spinning wires.Mass flux obtained with the new SPC system was found to be close to that with a snow trap. The system was operated continuously for at least nine days using two 35 A h lead batteries.

scholarly journals FRAUNHOFER DIFFRACTION BY A STRIP: PERTURBATION METHOD

2017 ◽  
Vol 79 ◽  
pp. 149-165
Author(s):  
Anne Marie Gavaix ◽  
Jean Chandezon
Keyword(s):  
Perturbation Method ◽  
Fraunhofer Diffraction

A new spectroscopic method using the Fraunhofer diffraction pattern

1984 ◽  
Vol 5 (7) ◽  
pp. 985-996 ◽  
Author(s):  
Bao-chang Zhao ◽  
Masato Tazawa ◽  
Atsuo Kitade ◽  
Kunio Yoshihara
Keyword(s):  
Diffraction Pattern ◽  
Spectroscopic Method ◽  
Fraunhofer Diffraction

Effect of multiple circular holes Fraunhofer diffraction for the infrared optical imaging

2014 ◽  
Author(s):  
Chunlian Lu ◽  
He Lv ◽  
Yang Cao ◽  
Zhisong Cai ◽  
Xiaojun Tan
Keyword(s):  
Optical Imaging ◽  
Fraunhofer Diffraction ◽  
Circular Holes
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