Stimuli were presented on a 21inch Sony Trinitron CRT monitor running at 100 Hz. The luminance response of the monitor was measured using a Minolta LS-110 luminance meter. CrystalEyes LCD shutter goggles were used to achieve stereoscopic presentation. To minimise cross-talk in the goggles, only the red phosphor of the monitor was used. Stimuli were created and presented using MATLAB and the Psychophysics Toolbox extensions [36] (link)–[37] . Stimuli were viewed from a distance of 115 cm, in a dimly lit laboratory.
Ls 110 luminance meter
Manufactured by Konica Minolta
Sourced in Japan
The LS-110 luminance meter is a device used to measure the luminance of a surface. It provides accurate and reliable measurements of the amount of light emitted or reflected from a particular area. The core function of the LS-110 is to quantify the brightness or light intensity of a given subject.
Automatically generated - may contain errors
Lab products found in correlation
Usb4000 spectrometer, by OceanOptics (2 mentions)
2400 source meter, by Konica Minolta (2 mentions)
Trinitron crt monitor, by Sony (1 mentions)
Liu470a, by Thorlabs (1 mentions)
C9920 03 spectrometer, by Hamamatsu Photonics (1 mentions)
Cary eclipse spectrofluorometer, by Agilent Technologies (1 mentions)
Iol master, by Zeiss (1 mentions)
Illuminance meter t10, by Konica Minolta (1 mentions)
S 4800 scanning electron microscope, by Hitachi (1 mentions)
13 protocols using ls 110 luminance meter
1
Stereoscopic Presentation of Visual Stimuli
2
Characterization of Organic Light-Emitting Diodes
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The current–voltage (I–V) characteristics were measured using a HP4140B picoammeter. The luminance–voltage (L–V) measurements were performed using a Minolta LS–110 Luminance meter. The EL spectra were measured using an Ocean Optics USB4000 spectrometer. All measurements were carried out in ambient atmosphere at room temperature.
3
Spatial Cueing Experiment with Varying Cues
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The stimuli were black figures (5.5 cd/m2; RGB colour code: 0, 0, 0; luminance values were measured with a LS-110 luminance meter (Minolta, Osaka, Japan) and stem from an exemplary laptop display, however, due to the nature of the online setting, variations between participants are to be expected) on a grey background (55,7 cd/m2; RGB colour code: 128, 128, 128; see explanation above), consisting of a fixation dot at the centre of the computer screen, a cue made of one or two circles and a target letter displaying the number 1, 2, 3 or 4. The single cue and double cue were presented for 50 ms after a random stimulus interval of 750 – 1250 ms drawn from a uniform distribution. The target letter followed after a fixed cue-target onset asynchrony (CTOA) of 500 ms with a duration of 200 ms. The stimulus sizes were adjusted to the monitor proportions to accommodate that participants performed the experiments on their monitors. Given a standard 15.6-inch display at the instructed viewing distance of 65 cm, the diameters of the black figures approximate to 0.18° of visual angle for the fixation dot and 0.62° of visual angle for the cues presented at a distance of approximately 3.8° of visual angle from centre screen.
4
Luminance and Chromaticity Measurement
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The brightness of both light sources was assessed by measuring the luminance values. The color quality of the illuminated surfaces was checked by applying the International Commission on Illumination CIE1931 color space chromaticity diagram and comparing the xenon and laser light color ranges [11 ,16 ]. The luminance and chromaticity (x and y coordinates) were measured using an LS-110 luminance meter (Konica Minolta Inc., Tokyo, Japan), and a test color sample chart was used. The luminance values and chromaticity (x and y coordinates) for each illuminated color test sample were recorded, and a brightness radar chart and a chromaticity color range diagram were constructed accordingly.
5
Luminance Measurement and Gamma Correction
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Stimuli were displayed on a ViewSonic monitor (G90fB 19”) driven by an ASUS computer with an Intel Core i7 display card. Luminance was measured with a Minolta LS-110 luminance meter, and gamma correction was performed with the MMFA software. The luminances of the black and white background were 0.53 cd/m2 and 127.9 cd/m2 respectively.
6
Visual Acuity Assessment with Teller and Lea Symbols
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Visual acuity was assessed with a set of Teller acuity cards (TAC; Teller et al., 1986 (link); Vistech Consultants, Inc., Dayton, OH, USA) for near (38 cm) or distant (84 cm) acuity, or with the Lea symbols Folding 15 Line distance chart for near (40 cm) or distant (1.5 m) acuity (Hered et al., 1997 (link)). For children under 3 years of age or children with difficulty identifying Lea symbols, the TAC was used. The testing distance was set at 84 cm for the TAC and 1.5 m for the Lea Symbols chart at first. If the child could not discriminate or recognize the stimuli, the test distance was changed to 38 cm for the TAC and 40 cm for the Lea Symbols chart to decrease the testing time and the burden on the participants. Results of the TAC test were converted from the unit of cycles/cm to the Snellen equivalent, a decimal scale, and finally the logMAR scale for comparison and statistical analysis. The luminance of both card sets was maintained at approximately 92 cd/m2, measured with a Minolta LS-110 luminance meter.
7
Characterization of Optoelectronic Devices
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The current–voltage (I–V) characteristics were measured using a HP4140B picoammeter. The luminance–voltage (L–V) measurements were performed using a Minolta LS–110 Luminance meter. The electroluminescence (EL) spectra were measured using an Ocean Optics USB4000 spectrometer. The CRI and CCT were measured using an UPRtek MK-350 spectrometer. All measurements were carried out in ambient atmosphere at room temperature.
8
Calibrating Display for Luminance Perception
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The display was calibrated for human luminance perception using a Minolta LS-110 luminance meter (Osaka, Japan). Images with grey values ranging from 0–255 on an 8 bit scale were displayed on the screen, and the luminance was measured in lux for each image at four different points on the screen and averaged. The grey value was then plotted against the average luminance to determine the value that would represent an intermediate grey between the black and white markings on a ratio scale, and this value was used in target and background creation. The display refreshed at 70Hz, which would equate to a frame by frame displacement of 0.57 degrees. The flicker of the striped targets was 41.6Hz (based on calculating the time taken for one complete cycle of white and black stripes), which was lower than the refresh rate of the display.
9
Characterizing SWNT Network Morphology
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The morphology of random SWNT networks is characterized using a field-emission scanning electron microscopy (LEO 1550 Gemini SEM). The direct-current measurements of SWNT-TFTs and single unit driving circuit are carried out in air using a semiconductor parameter analyzer (Agilent, B1500A). The performances of OLED pixels are measured using LS-110 luminance meter (Konica Minolta). An external microcontroller unit (Arduino Duemilanove ATmega328) is used to input controlling and image signals to the SWNT-TFT driver circuit to create static and dynamic images on the OLED display.
10
Characterization of W-LED Fabrication
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. XRD patterns were acquired on a PAN analytical Empyrean X-ray diffractometer, equipped with a 1.8 kW Cu Kα ceramic X-ray tube and a PIXcel3D 2 × 2 area detector, operating at 45 kV and 40 mA, under ambient conditions using parallel beam geometry and symmetric reflection mode. Samples were prepared by pressing the composite powders onto a quartz zero-diffraction single crystal substrate.
Fabrication and characterization of W-LED. Dry powders of red-and green-emitting CsPbX3/SiOx composites were finely ground in a mortar together with polymethylmethacrylate (PMMA) beads. The resulting powder mixture was then pressed into a solid pellet of 16 mm in diameter and ca. 1-2 mm in height. The as-obtained phosphor pellet was placed on top of a commercial blue LED (Thorlabs LIU470A) with an emission peak at 460 nm. The resulting white light spectrum was measured inside a Hamamatsu C9920-03 spectrometer equipped with an integrating sphere. The luminance was assessed with a Minolta LS-110 Luminance Meter.
Fabrication and characterization of W-LED. Dry powders of red-and green-emitting CsPbX3/SiOx composites were finely ground in a mortar together with polymethylmethacrylate (PMMA) beads. The resulting powder mixture was then pressed into a solid pellet of 16 mm in diameter and ca. 1-2 mm in height. The as-obtained phosphor pellet was placed on top of a commercial blue LED (Thorlabs LIU470A) with an emission peak at 460 nm. The resulting white light spectrum was measured inside a Hamamatsu C9920-03 spectrometer equipped with an integrating sphere. The luminance was assessed with a Minolta LS-110 Luminance Meter.
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