LGS 1000 - Superior measurement technology for large SSL lamps and LED modules

The new LGS 1000 goniophotometer analyzes the angle-dependent spatial radiation properties of large SSL lamps and LED modules up to a length of 1900 mm and weight of 50 kg. The Type C design with horizontal optical axis permits a much simpler setup for the measuring path – despite its impressive dimensions of 1850 x 1492 x 1798 mm – than with complex mirror goniophotometers.

Combined with a spectroradiometer from Instrument Systems, all spectral quantities such as color coordinates, color temperature and even color rendering index can be determined as a function of angle. C-plane measurements can also be carried out very quickly “on the fly” using the Optronik DSP Photometer.

LGS 1000 goniophotometer

The complete system

The LGS 1000 comprises the goniometer itself with a sample plate for fixing the test specimen and LGS controller. The control unit is located in a separate 19” rack. The goniophotometer system from Instrument Systems includes a comprehensive range of accessories such as the luminous flux integrator which measures test objects up to a diameter of 200 mm in their required burning position in conformance with standards CIE S 025, EN 13032-4 and IES LM-79-2008. An additional burning position correction enables the characterization of larger probes. This innovative accessory permits measurement of all photometric quantities of the test item in a luminaire orientation other than the designed burning position. The mechanical design guarantees a comfortable setup of the operational position necessary for the determination of correction data using the auxiliary photometer method conforming to the latest international standards (CIE S 025 and EN 13032-4).

Product highlights

  • Type C goniophotometer for specimens up to 1900 mm in diameter
  • Accessible steps facilitate mounting of samples
  • Accurate determination of luminous intensity and luminous flux
  • Angular-resolved analysis of spectral and colorimetric quantities
  • Optional luminous flux integrator
  • Optional burning position correction

Technical specifications 

LGS 1000 Goniophotometer
Goniometer
CIE Goniometer typeType C with horizontal optical axis
DriverServo motors
Angular range C axis± 180° with end switches
Angular range γ axis

± 170° with end switches (usable to ± 165° due to shadowing)

Resolution of the angular encoder0.01°
Reproducibility C axis

≤ 0.1° (at rated load)

≤ 0.2° (at max. load)

Reproducibilty γ axis

≤ 0.1° (at rated load)

≤ 0.1° (at max. load)

Angular speed C axis5°/s to 50°/s selectable (16 speeds)
Angular speed γ axis 5°/s to 30°/s selectable (16 speeds)
Travel range Z axis 50 to 500 mm via hand crank (integrated measuring scale in mm)
Clear height1005 mm
Sample table
Maximum sample size1700 x 1050 mm² or 1900 x 620 mm² (in each case for symmetrical mounting)
Rated load range0-30 kg
Maximum load rangeto 50 kg
LGS Controller
FunctionsDriving the servo motors of the goniometer; display of the angle positions; optional display of measured values for the Optronik photometer
InterfacesRS-232-C for connecting a PC; CAN Bus for DSP measurement amplifier and remote control RecoCAN
System setupSeparate 19" rack 33 U (dimensions of rack: 1650 x 552 x 600 mm)
Power supply and max. consumption230 V; approx. 2000 VA

Ordering information

Order  no.              Description
Goniometer
LGS1000-100LGS 1000 Goniometer based on C, γ coordinate system with horizontal optical axis; separate 19” rack with control and monitor modules; without photometer or spectroradiometer
Options
LGS1000-150 Safety system for CE conformity of the LGS1000-100; comprising two laser scanners integrated in the base unit
LGS1000-300 Optional 100 - 127 V AC power supply for LGS1000-100
LGS1000-320 RecoCAN remote control for manual angle positioning
LGS1000-330 Optional module LGS SwitchBox for electrical supply and taking measurements of the test specimen
LGS1000-580 Sample holder for measurements with correction of burning position
LGS1000-700 Sample holder for luminous flux integrator
LGS1000-710 Luminous flux integrator version for photometer
LGS1000-720 Luminous flux integrator version for photometer and spectroradiometer
Accessories
LGS-415 Stand with mount for a stray light tube; height of the optical axis 1695 mm 
LGS-440Stray light tube with ±4.5° opening angle for measurement of luminous intensity distribution curves in the far field; for EOP 120 or photometer head
LGS-450Stray light tube with ±30° opening angle for the measurement of luminous flux in the near field; for EOP 120 or photometer head
LGS-470Rack for spectroradiometer CAS 140CT
AC current sources and power meters
W-301100 V / 115 V mains voltage for AC current sources with 250, 500 and 1000 W
W-302240 V mains voltage for AC current sources with 250, 500 and 1000 W
W-310AC current source 250 VA
W-310-1AC current source 250 VA and expanded voltage range 0-500 V AC
W-320AC current source 500 VA
W-320-1AC current source 500 VA and expanded voltage range 0-500 V AC
W-330AC current source 1000 VA
W-330-1AC current source 1000 VA and expanded voltage range 0-500 V AC
W-410Measuring unit for determining electrical quantities
Photometer
LGS-610Photometer comprising photometer head (10 x 10 mm detector aperture), class L in conformity with DIN5032-7, EN-DIN13032-1, CIE69; DSP measuring amplifier with digital signal processor for connecting to the LGS Controller; incl. mounting plate for stand
LGS-620 Cosine corrected photometer comprising photometer head (detector aperture 12 mm diameter), class L in conformity with DIN5032-7, EN-DIN13032-1, CIE69; DSP measuring amplifier with digital signal processor for connecting to the LGS Controller; incl. mounting plate for stand
CAL-630Calibration in illuminance; incl. factory calibration certificate and verification of spectral correction of the detector