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Luminance Meter LS-100（LS-110）
LS-100 is a single lens reflex luminance meter use for measuring the reflectance of light source and surface of object. With its 1° measurement angle, wide range luminance (0.001 to 299,900 cd/m2) and flare elimination design, it is described as the most precise and reliable luminance meter.
With measurement angle 1/3°only, LS-100 is ideal for measuring luminance of small specimens.
Based on the particular application, measurement values can be set to instantaneous luminance, peak luminance, and luminance ratio.
Model | Luminance Meter LS-100 | Luminance Meter LS-110 |
Type | SLR spot luminance meter for measuring light-source and surface brightness | |
Acceptance angle | 1° | 1/3° |
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 | Φ4.8mm |
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/m 2 or fL (switchable) | |
Measuring range | FAST: 0.001 to 299,900cd/m 2 (0.001 to 87,530fL) | FAST: 0.01 to 999,900cd/m 2 (0.01 to 291,800fL) |
Accuracy | 0.001 to 0.999cd/m 2 (or fL): ±2% ±2 digits of displayed value | 0.01 to 9.99cd/m 2 (or fL): ±2% ±2 digits of displayed value |
(Illuminant A measured at ambient temperature of 20 to 30°C/68 to 86°F) | ||
Repeatability | 0.001 to 0.999cd/m 2 (or fL): ±0.2% ±2 digits of displayed value | 0.01 to 9.99cd/m 2 (or fL): ±0.2% ±2 digits of displayed value |
(Measurement subject: Illuminant A) | ||
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 | One 9V battery; power can also be supplied by optional Data Printer DP-10 | |
Power consumption | While measuring button is pressed and viewfinder display is lit: 16mA average | |
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 | |
