Model |
Luminance Meter LS-100
|
Type |
SLR spot luminance meter for measuring light-source and surface brightness |
Acceptance Angle |
1° |
Optical System |
85mm f/2.8 lens; SLR viewing system; flare factor less than 1.5% |
Angle of View |
9°
|
Focusing Distance |
1014mm (40 in.) to infinity |
Minimum Measuring Area |
Φ14.4mm |
Receptor |
Silicon photocell
|
Relative Spectral Response |
Within 8% (f1) of the CIE spectral luminous efficiency V (λ) |
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: 0.001 to 299,900cd/m2 (0.001 to 87,530fL) |
SLOW: 0.001 to 49,990cd/m2 (0.001 to 14,590fL) |
Accuracy |
0.001 to 0.999cd/m2 (or fL): ±2% ±2 digits of displayed value |
1.000cd/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) |
Repeatability |
0.001 to 0.999cd/m2 (or fL): ±0.2% ±2 digits of displayed value |
1.000cd/m2 (or fL) or greater: ±0.2% ±1 digit of displayed value (Measurement subject: Illuminant A) |
Temperature/Humidity Drift |
Within ±3% ±1 digit (of value displayed at 20°C/68°F) within operating temperature /humidity range |
Calibration Mode |
Minolta standard/user-selected standard (switchable) |
Color Correction Factor |
Set by numerical input; range: 0.001 to 9.999 |
Reference Luminance |
1; set by measurement or numerical input |
Measurement Modes |
Luminance; luminance ratio; peak luminance or luminance ratio |
Display |
External: 4-digit LCD with additional indications |
Viewfinder: 4-digit LCD 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 |
While measuring button is pressed and viewfinder display is lit: 16mA average |
While power is on and viewfinder display is not lit: 6mA average |
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 |
79×208×150mm (3-1/8×8-3/16×5-7/8 in.) |
Weight |
850g (30 oz.) without battery
|
Standard Accessories |
Lens cap; Eyepiece cap; ND eyepiece filter; 9V battery; Case
|