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The lightweight, handheld LS-100 luminance meter is a compact and portable device that is ideal for measuring a variety of luminance conditions with a Φ14.4mm measuring area.

LS-100 Luminance Meter

The handheld LS-100 luminance meter offers excellence and categorization in the upper levels of the DIN quality class B which places them among the best in the market. This meter is powered by a 9-volt battery making this compact, lightweight luminance meter ideal for any location.

The LS-100 luminance meter features a single reflex lens (SLR) optical system allowing for precise targeting while ensuring that the viewfinder displays the area to be measured regardless of distance. This series is capable of measuring a vast range of sizes beginning at diameters of 0.4mm. The LS series is very user friendly for everyone from novices to the experienced.

A brilliant LCD screen and viewfinder displays the measured luminance value enabling the user to manage the measured object without moving the device form the eye. For measurements from strong light sources, a neutral density filtered eyepiece is included. There is also a pistol grip for a stable hold.

The LS-100 luminance meter starts at a range of 0.001cd/m2 enabling the device to measure exceptionally dark surfaces. User calibration and color corrections functions are included in this device allowing a user to choose standard luminance as well as the function that corrects differences from specific light sources along with the ability to set measurement values: luminance ratio, instantaneous luminance, and peak luminance. The LS-100 can be connected to a personal computer for the exchange of data and control signals.

LS 100 Luminance Meter from Konica Minolta

LS-100 Luminance Meter

  • Portable – lightweight, compact, and battery powered
  • One of the best on the market – categorized in the upper range of the DIN quality class B
  • SLR (single lens reflex) – allows precise targeting, ensures viewfinder shows the exact area to measure
  • Small diameter measurements – can measure as small as 0.4mm
  • LCD and viewfinder displays – measurement results are shown in both places, viewfinder display makes it easy to focus on target
  • Neutral density eyepiece filter – allows measurements of strong light sources
  • Grip – pistol grip design enables the user to stably hold the instrument
  • Measure dark surfaces – range starts at 0.001cd/m2
  • User calibration and color correction – corrects the differences for a specified light source
  • Three settings – instantaneous luminance, peak luminance, and luminance ratio
  • PC connections – send measurement data and receive control signals

(Discontinued) LS-100 Luminance Meter


ModelLuminance Meter LS-100
TypeSLR spot luminance meter for measuring light-source and surface brightness
Acceptance angle
Angle of view
Focusing distance014mm (40 in.) to infinity
Minimum measuring areaΦ14.4mm
ReceptorSilicon photocell
Relative Spectral Response*Within 8% (f1) of the CIE spectral luminous efficiency V (λ)
Response timeFAST: 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 unitscd/m2 or fL (switchable)
Measuring rangeFAST: 0.001 to 299,900cd/m2 (0.001 to 87,530fL)
SLOW: 0.001 to 49,990cd/m2 (0.001 to 14,590fL)
Accuracy0.001 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)
Repeatability0.001 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 driftWithin ±3% ±1 digit (of value displayed at 20°C/68°F) within operatingtemperature /humidity range
Calibration modeMinolta standard/user-selected standard (switchable)
Color correction factorSet by numerical input; range: 0.001 to 9.999
Reference luminance1; set by measurement or numerical input
Measurement modesLuminance; luminance ratio; peak luminance or luminance ratio
DisplayExternal: 4-digit LCD with additional indications
Viewfinder: 4-digit LCD with LED backlight
Data communicationRS-232C; baud rate: 4800bps
External controlMeasurement process can be started by external device connected to data output terminal
Power sourceWhile 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 range0 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
Dimensions79×208×150mm (3-1/8×8-3/16×5-7/8 in.)
Weight850g (30 oz.) without battery
Standard accessoriesLens cap; Eyepiece cap; ND eyepiece filter; 9V battery; Case

Specifications are subject to change without notice.
∗ Equivalent to 2% specified for T-1 series.
8% CIE(f1’),new JIS(1993)
2% old JIS

LS-100 Luminance Meter

Owner’s Manual: Download PDF (2.3MB)