Luminance Meter LS-100（LS-110）

Model：LS-100(LS-110)
Brand：

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)
SLOW: 0.001 to 49,990cd/m 2 (0.001 to 14,590fL)

FAST: 0.01 to 999,900cd/m 2 (0.01 to 291,800fL)
SLOW: 0.01 to 499,900cd/m 2 (0.01 to 145,900fL)

Accuracy

0.001 to 0.999cd/m 2 (or fL): ±2% ±2 digits of displayed value
1.000cd/m 2 (or fL) or greater: ±2% ±1 digit of displayed value

0.01 to 9.99cd/m 2 (or fL): ±2% ±2 digits of displayed value
10.00cd/m 2 (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/m 2 (or fL): ±0.2% ±2 digits of displayed value
1.000cd/m 2 (or fL) or greater: ±0.2% ±1 digit of displayed value

0.01 to 9.99cd/m 2 (or fL): ±0.2% ±2 digits of displayed value
10.00cd/m 2 (or fL) or greater: ±0.2% ±1 digit 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
While power is on and viewfinder display is not lit: 6mA 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


Brightness measurement of CRT, led, El, etc; Measurement of road lighting and tunnel lighting; Identification measurement of railway, etc; Identification measurement of roads, airports, etc; Measurement of lighting and outdoor signboards.