Calibrated light source unit


The L7810-03 is a calibrated lamp light source that delivers extremely high levels of "stability" and "reproducibility". It is available in a convenient set including a xenon lamp, lamp housing and power supply to allow easy operation and stable light output with high reproducibility. It emits light over a wide spectral distribution from 200 nm to 800 nm and is supplied with a calibration certificate with a JCSS (Japan Calibration Service System) logo mark.


  • Light level control of light source
  • Sensitivity control of optical sensor
  • Light intensity measurement and studies of photoreactions
    (Light resistance, light curing, etc.)
  • Quality control of photometric equipment
    (Medical analysis equipment, semiconductor inspection systems, imaging devices, etc)

Light intensity drift (Typ.)

Spectral irradiance


  Description/Value Unit
Lamp Xenon lamp -
Lamp wattage 150 W
Spectral distribution 185 to 2000 nm
Calibrated range (*1) 200 to 800 (10 intervals) nm
Type of calibration Spectral irradiance -
Calibration unit μW · cm-2 · nm-1 -
Recalibration interval (*2) 100 in operation h
Light output stability Drift Typ. ±0.5 % / h
Fluctuation (p-p) Max. 1.0 %
Guaranteed lamp life (*3) 500 h
Output window material Synthetic silica -
Output window diameter φ28 mm
Output Axis Height 140 (150 including plastic feet) mm
Warm-up time 10 minutes or more -
Timer Hour display (power supply) -
Input voltage (AC) 100 V to 240 V, single phase 50 Hz / 60 Hz -
Power consumption Max. 220 VA
Cooling method Forced air cooling by fan -
Operating temperature range 0 to +40
Operating temperature range (During calibration) +23 to +27
Operating humidity range 20% to 70% (no condensation) -
Operating humidity range (During calibration) 20% to 70% (no condensation) -
Storage temperature range -10 to +65
Strage humidity range Below 85% (no condensation) -


*1: Spectral irradiance is measured at a point 50 cm away from the reference plane of the lamp housing.

*2: This is a general guide for recalibration to maintain calibration reliability. Please contact our sales office for recalibration fee.

*3: This is the total amount of time that the lamp can be recalibrated to serve as a calibrated light source.

Dimensional outlines (Unit mm)

Contact us for more information.

  • Literature
  • Price
  • Delivery
  • Custom order
  • Support
  • Other

Contact us