Konica Minolta Luminance & Color Meter-CS-100A


Principal Specifications CS-100A


SLR spot colorimeter for measuring light-source and surface luminance and chromaticity

Acceptance angle

Optical system

85 mm f/2.8 lens; SLR viewing system; flare factor less than 1.5%

Angle of view

9° with 1° measurement area indication

Focusing distance

1014 mm (40 in.) to infinity


3 silicon photocells filtered to detect primary stimulus values for red, green, and blue light
Spectral response Closely matches CIE 1931 Standard Observer curves

Response time

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
Luminance units: cd/m2 or fL (switchable)

Measuring range

FAST: 0.01 to 299,000 cd/m2 (0.01 to 87,530fL); SLOW: 0.01 to 49,900 cd/m2 (0.01 to 14,500fL)


Luminance (Y): ±2% of reading ±1 digit
Chromaticity (x,y): ±0.004 (Illuminant A measured at ambient temperature of 18 to 28°C/64 to 82°F)


Luminance (Y): ±0.2% of reading ±1 digit
Chromaticity (x,y): FAST: Y 100 cd/m2 or above: ±0.001; 48.1 to 99.9 cd/m2: ±0.002; Below 48.1 cd/m2: Below measurement range
SLOW: Y 25.0 cd/m2 or above: ±0.001; 12.0 to 24.9 cd/m2: ±0.002; Below 12.0 cd/m2: Below measurement range (Measurement subject: Illuminant A)

Target value

1; set by measurement or numerical input

Measurement modes

Absolute color: Yxy; Color difference: Δ(Yxy)


External: LCD; 3 values (Y, x, and y) of 3 digits each with additional indications
Viewfinder: 3-digit LCD (showing luminance value y ) with LED backlight

Data communication

RS-232C; baud rate: 4800bps

External control

Measurement process can be started by external device connected to data output terminal

Power source

One 9V battery; Power can also be supplied via data output terminal

Operating temperature/humidity range

0 to 40°C, relative humidity 85% or less (at 35°C) with no condensation

Storage temperature/humidity range

-20 to 55°C, relative humidity 85% or less (at 35°C) with no condensation

Dimensions (W × H × D)

79 × 208 × 154 mm (3-1/8 × 8-3/16 × 6-1/16 in.)


890 g (2 lb.) without battery

Standard accessories

Lens cap; Eyepiece cap; Protective filter; ND eyepiece filter; 9V battery; Chromaticity chart; Case