(Discontinued) LS-100 Luminance Meter
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Konica Minolta (Discontinued) LS-100 Luminance Meter
Konica Minolta (Discontinued) LS-100 Luminance Meter
Konica Minolta (Discontinued) LS-100 Luminance Meter

View our latest version of this instrument, the LS-150.

Falling into the upper DIN quality class B range, the LS-100 is among the most accurate and powerful spot luminance meters available anywhere. Because they are very compact, light in your grip and run off 9 volt battery power, you'll find this instrument to be one of the simplest light meters on the market.

The LS-100 series uses a single lens reflex (SLR) optics system that provides users with several important capabilities. The SLR allows highly accurate targeting of light sources. Very small areas, even down to 1.3mm, can be measured accurately. Measurement areas at distances both long and short show up consistently in the viewfinder. This flexibility allows even those who've never used the instrument to gather precise measurement results.

The value of the measured luminance is easy to read on the clear LCD screen and also on the viewfinder. With this capability, the instrument allows the user to never have to move the unit from the eye while still perfectly controlling the measured object. When measuring light sources that are particularly strong, an eyepiece filter of neutral density makes the job safe and comfortable. In all measuring tasks, our uniquely designed pistol-type grip provides for a secure hold on the instrument.

When measuring very dark surfaces, the LS-100 comes through with a range that begins at 0.001cd/m2. Color-correction and calibration functions built in to the unit give users the ability to choose a standard luminance and have differences corrected according to any light sources that are specified. Based on the application, three settings are available: luminance ratio, peak luminance and instantaneous luminance. The LS-100 easily communicates with a Windows-based computer, allowing it to receive control signals and transmit measurement data.

PDFClick here for the (Discontinued) Brochure.

PDFClick here for the (Discontinued) Manual.

  • 1° acceptance angle
  • Portable, lightweight, compact and battery powered
  • Upper range of the DIN quality class B
  • SLR (Single Lens Reflex), precise targeting ; shows exact area to measure
  • Small diameter measurements - as small as .4mm
  • LCD and viewfinder displays; easy to focus on target
  • Neutral density eyepiece filter allowing measurements of strong light sources
  • Pistol grip enables user to stably hold the instrument
  • Measures dark surfaces - range starts at 0.001cd/m²
  • User calibration and color correction
  • 3 settings: Instantaneous luminance, peak luminance, and luminance ratio
  • PC connection to send measurement data and receive control signals

Model Luminance Meter LS-100
Type SLR spot luminance meter for measuring light-source and surface brightness
Acceptance angle
Optical system 85mm f/2.8 lens; SLR viewing system; flare factor less than 1.5%
Angle of view
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: 0.0001 to 299,900cd/m² (0.01 to 87,530fL)
SLOW: 0.001 to 49,900cd/m² (0.01 to 14,590fL)
Accuracy 0.001 to 0.999cd/m² (or fL): ±2% ±2 digits of displayed value
1.00cd/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 1.00cd/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 x;208 x;150mm (3-1/8 x;8-3/16 x;5-7/8 in.)
Weight 850g (30 oz.) without battery
Standard accessories Lens cap; Eyepiece cap; ND eyepiece filter; 9V battery; Case
Specifications are subject to change without notice.

Included Accessories
Lens Cap 40.5mm
Lens Cap 40.5mm
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