scholarly journals Haze Estimation of Crystalline Lens by Contrast Sensitivity as a Function of Scattering Light Intensity

i-Perception ◽  
10.1068/ic305 ◽  
2011 ◽  
Vol 2 (4) ◽  
pp. 305-305
Author(s):  
Nozomi Ohnaka
Keyword(s):  
Light Intensity ◽  
Contrast Sensitivity ◽  
Crystalline Lens ◽  
Scattering Light

Study on Back-Scattering Light Intensity in Airborne Laser Range-Gated Imaging

2015 ◽  
Vol 42 (1) ◽  
pp. 0113003 ◽  
Author(s):  
寇添 Kou Tian ◽  
王海晏 Wang Haiyan ◽  
王芳 Wang Fang ◽  
王领 Wang Ling
Keyword(s):  
Light Intensity ◽  
Laser Range ◽  
Airborne Laser ◽  
Back Scattering ◽  
Scattering Light ◽  
Gated Imaging

Research on Environmental Materials with Interference Mechanism on Flue Gas SO2 Concentration Measurement by the Multidispersion Soot

2014 ◽  
Vol 1014 ◽  
pp. 291-294
Author(s):  
Yu Han Gong ◽  
Bao Hua Chen ◽  
Yan Jun Zhao ◽  
Shou Guang Cheng
Keyword(s):  
Light Intensity ◽  
Flue Gas ◽  
Intensity Attenuation ◽  
Soot Particles ◽  
Environmental Materials ◽  
Distribution Parameters ◽  
Scattering Light ◽  
Average Size ◽  
So2 Concentration ◽  
Interference Mechanism

The SO2 concentration can be figured out through measuring the light intensity attenuation. But the scattering and absorption of the multidispersion soot particles can attenuate the light intensity, so the visible measurement light intensity attenuation is larger and the concentration is increased. The interference on the SO2 concentration caused by the multidispersion soot particles is discussed in this paper. The dissipativity, concentration, average size, size distribution parameters and the scattering light angle range of the multidispersion soot particles can interference the SO2 concentration.

scholarly journals Autofocals: Evaluating gaze-contingent eyeglasses for presbyopes

2019 ◽  
Vol 5 (6) ◽  
pp. eaav6187 ◽  
Author(s):  
Nitish Padmanaban ◽  
Robert Konrad ◽  
Gordon Wetzstein
Keyword(s):  
Visual Acuity ◽  
Contrast Sensitivity ◽  
Crystalline Lens ◽  
Sensor Data ◽  
Separate Study ◽  
Eye Tracker ◽  
Depth Sensor ◽  
Tunable Lenses ◽  
Presbyopia Correction ◽  
Progressive Lenses

As humans age, they gradually lose the ability to accommodate, or refocus, to near distances because of the stiffening of the crystalline lens. This condition, known as presbyopia, affects nearly 20% of people worldwide. We design and build a new presbyopia correction, autofocals, to externally mimic the natural accommodation response, combining eye tracker and depth sensor data to automatically drive focus-tunable lenses. We evaluated 19 users on visual acuity, contrast sensitivity, and a refocusing task. Autofocals exhibit better visual acuity when compared to monovision and progressive lenses while maintaining similar contrast sensitivity. On the refocusing task, autofocals are faster and, compared to progressives, also significantly more accurate. In a separate study, a majority of 23 of 37 users ranked autofocals as the best correction in terms of ease of refocusing. Our work demonstrates the superiority of autofocals over current forms of presbyopia correction and could affect the lives of millions.

scholarly journals Research of Nanosized Inhomogeneities in H-Bonded Liquids Using Sophisticated Light Scattering Techniques

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Nataliia Kuzkova ◽  
Andrey Yakunov
Keyword(s):  
Light Scattering ◽  
Light Intensity ◽  
Spectral Density ◽  
Power Spectral Density ◽  
Low Frequency ◽  
Percolation Model ◽  
Phonon Energy ◽  
Power Spectral ◽  
Complex Liquids ◽  
Scattering Light

Hydrogen bonded (H-bonded) liquids can be considered as mediums that have nanosized heterogeneities. Previously, it was shown that the light scattering by acoustic phonons is accompanied by fluctuations of intensity of light with power spectral density   () that reflects the phonon energy fluctuations. In this work fluctuations of light scattering in H-bonded liquids have been investigated. We consider two mechanisms of -process forming: fluctuations of phonon energy and fluctuations caused by dynamical inhomogeneities, predicted by percolation model. The variability can be explained by different contributions of both scattering mechanisms, which form an overall picture of low-frequency fluctuations of scattering light intensity in complex liquids.

scholarly journals Detecting quantum coherence of Bose gases in optical lattices by scattering light intensity in cavity

2010 ◽  
Vol 18 (15) ◽  
pp. 15664 ◽  
Author(s):  
Xiaoji Zhou ◽  
Xu Xu ◽  
Lan Yin ◽  
W. M. Liu ◽  
Xuzong Chen
Keyword(s):  
Light Intensity ◽  
Quantum Coherence ◽  
Optical Lattices ◽  
Bose Gases ◽  
Scattering Light

Soot Concentration Interference Measurement System Caused by Multidispersion Soot Different Position

2014 ◽  
Vol 540 ◽  
pp. 277-280
Author(s):  
Yan Jun Zhao ◽  
Cheng Bin Gao ◽  
Bin Qu
Keyword(s):  
Light Intensity ◽  
Measurement System ◽  
Solution Method ◽  
Pollutant Emission ◽  
Scattering Method ◽  
Soot Emission ◽  
Soot Concentration ◽  
Interference Measurement ◽  
Total Light ◽  
Scattering Light

One of the pollutant emission parameters is soot emission concentration. The light intensity scattering method is commonly used in monitoring the soot emission concentration. The distance between the sensor and the soot is different; the sensor acceptance scattering light angle range of the different position multidispersion soot is different and the ratio of the soot scattering light intensity and the total light intensity is different. So it can decreases soot emission concentration accuracy. To improve soot concentration accuracy, soot concentration interference caused by the multidispersion soot different position is studied in this paper. Numerical simulation results show that the different parameters multidispersion soot position can increase soot concentration error. Solution method on the multidispersion soot different position is brought out. The interference measurement system caused by the different multidispersion soot position is designed and the experimental results show that the measurement system can on-time measure the soot position interference and decrease the soot concentration measurement error.

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