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Author: yoshihiro ohno
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1. ANGULAR CHARACTERISTICS OF THE SURROUNDING LUMINANCE EFFECT ON PERIPHERAL ADAPTATION STATE IN THE MESOPIC RANGE
Published: 4/23/2014
Authors: Yoshihiro Ohno, Tatsukiyo Uchida
Abstract: CIE 191:2010 recommends a mesopic photometry system based on peripheral visual tasks. For implementation of the system, the visual adaptation field needs to be defined, taking into account the surrounding luminance effect on the adaptation state. A ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915671

2. VISION EXPERIMENT ON ACCEPTABLE AND PREFERRED WHITE LIGHT CHROMATICITY FOR LIGHTING
Published: 4/23/2014
Authors: Yoshihiro Ohno, Mira Fein
Abstract: Standards on white light chromaticity of fluorescent lamps are available for more than three decades, but the specifications in these standards have not been based on human vision perception data. Anecdotes say lights with chromaticities below the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915672

3. Practical Use and Calculation of CCT and Duv
Published: 10/18/2013
Author: Yoshihiro Ohno
Abstract: The Correlated Color Temperature (CCT) is often used to represent chromaticity of white light sources, but chromaticity is two-dimensional, and another dimension, the distance from the Planckian locus, is often missing. Duv is defined in ANSI C78.377 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912622

4. Report of the Key Comparison CCPR-K5 Spectral Diffuse Reflectance
Published: 10/2/2013
Authors: Yoshihiro Ohno, Maria E Nadal, Kenneth L Eckerle, E. A. Early
Abstract: This is an official report from Consultative Committee of Photometry and Radiometry (CCPR) on the Key Comparison CCPR-K5 spectral diffuse reflectance, conducted in the framework of CIPM Mutual Recognition Arrangement (MRA). 13 national laboratories ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913968

5. Experimental study of the visual adaptation field in mesopic photometry: Does surrounding luminance affect peripheral adaptation?
Published: 9/6/2013
Authors: Tatsukiyo Uchida, Yoshihiro Ohno
Abstract: CIE 191:2010 recommends a mesopic photometry system that defines the luminous efficiency function for peripheral visual tasks, which vary depending on adaptation state of observers. For implementation of the system, an adaptation field to determine t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913653

6. Optical Measurements of OLED Panels for Lighting Applications
Published: 7/22/2013
Authors: Tokihisa Kawabata, Yoshihiro Ohno
Abstract: Optical characteristics of OLED panels have been investigated for the purpose of developing a test method for OLED panels for lighting applications. The electrical characteristics, total luminous flux and chromaticity (x, y), and their dependence ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913288

7. Chapter 13. Color Quality of White LEDs
Published: 5/24/2013
Author: Yoshihiro Ohno
Abstract: This chapter overviews the fundamentals of chromaticity and color rendering as the two important aspects of color quality of light sources for general illumination, with special focus on the use for solid state light sources. The section for chrom ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912950

8. EFFECT OF HIGH LUMINANCE SOURCES TO PERIPHERAL ADAPTATION STATE IN MESOPIC RANGE
Published: 4/15/2013
Authors: Tatsukiyo Uchida, Yoshihiro Ohno
Abstract: CIE 191:2010 recommends a mesopic photometry system that defines the spectral luminous efficiency function for peripheral visual tasks. For implementation of the system, the visual adaptation field, which takes into account the surrounding luminance ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913477

9. INFLUENCE OF CURRENT AND VOLTAGE HARMONIC DISTORTION ON THE POWER MEASUREMENT OF LED LAMPS AND LUMINAIRES
Published: 4/15/2013
Authors: Christophe Martinsons, Yuqin Zong, Carl C Miller, Yoshihiro Ohno
Abstract: Specific issues appear in the measurement of the electrical power of AC-powered LED lamps and luminaires because they often generate harmonic currents in a wide frequency range. The topic of this paper is to clarify the impact of these harmonic curre ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913513

10. New method for spectral irradiance and radiance responsivity calibrations using kHz pulsed tunable optical parametric oscillators
Published: 3/2/2012
Authors: Yuqin Zong, Steven W Brown, George P Eppeldauer, Keith R Lykke, Yoshihiro Ohno
Abstract: Continuous-wave (CW) tunable lasers have been used for detector calibrations, especially for spectral irradiance and radiance responsivity, for many years at the National Institute of Standards and Technology (NIST) and other national metrology insti ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909993



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