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Model
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Luminance Meter LS-110
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Type
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SLR spot luminance meter for measuring light-source and surface brightness
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Acceptance angle
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1/3°
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Optical system
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85mm f/2.8 lens; SLR viewing system; flare factor less than 1.5%
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Angle of view
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9°
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Focusing distance
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1014mm (40 in.) to infinity
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Minimum measuring area
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Φ4.8mm
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Receptor
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Silicon photocell
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Relative Spectral Response*
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Within 8% (f1) of the CIE spectral luminous efficiency V (λ)
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Response time
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FAST: Sampling time: 0.1s, time to display: 0.8 to 1.0s; SLOW: Sampling time: 0.4s, time to display: 1.4 to 1.6s
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Luminance units
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cd/m2 or fL (switchable)
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Measuring range
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FAST: 0.01 to 999,900cd/m2 (0.01 to 291,800fL)
SLOW: 0.01 to 499,900cd/m2 (0.01 to 145,900fL)
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Accuracy
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0.01 to 9.99cd/m2 (or fL): ±2% ±2 digits of displayed value
10.00cd/m2 (or fL) or greater: ±2% ±1 digit of displayed value
(Illuminant A measured at ambient temperature of 20 to 30°C/68 to 86°F)
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Repeatability
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0.01 to 9.99cd/m2 (or fL): ±0.2% ±2 digits of displayed value
10.00cd/m2 (or fL) or greater: ±0.2% ±1 digit of displayed value
(Measurement subject: Illuminant A)
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Temperature/humidity drift
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Within ±3% ±1 digit (of value displayed at 20°C/68°F) within operatingtemperature /humidity range
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Calibration mode
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Minolta standard/user-selected standard (switchable)
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Color correction factor
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Set by numerical input; range: 0.001 to 9.999
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Reference luminance
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1; set by measurement or numerical input
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Measurement modes
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Luminance; luminance ratio; peak luminance or luminance ratio
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Display
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External: 4-digit LCD with additional indications
Viewfinder: 4-digit LCD with LED backlight
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Data communication
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RS-232C; baud rate: 4800bps
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External control
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Measurement process can be started by external device connected to data output terminal
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Power source
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While measuring button is pressed and viewfinder display is lit: 16mA average
While power is on and viewfinder display is not lit: 6mA average
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Operating temperature/humidity range
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0 to 40°C, relative humidity 85% or less (at 35°C) with no condensation
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Storage temperature /humidity range
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-20 to 55°C, relative humidity 85% or less (at 35°C) with no condensation
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Dimensions
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79×208×150mm (3-1/8×8-3/16×5-7/8 in.)
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Weight
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850g (30 oz.) without battery
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Standard accessories
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Lens cap; Eyepiece cap; ND eyepiece filter; 9V battery; Case
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