LGS 1000 Goniophotometer

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.

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Description

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.

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

Specifications

LGS 1000 Goniophotometer
Goniometer
CIE Goniometer type Type C with horizontal optical axis
Driver Servo 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 encoder 0.01°
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 axis 5°/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 height 1005 mm
Sample table
Maximum sample size 1700 x 1050 mm² or 1900 x 620 mm² (in each case for symmetrical mounting)
Rated load range 0-30 kg
Maximum load range to 50 kg
LGS Controller
Functions Driving the servo motors of the goniometer; display of the angle positions; optional display of measured values for the Optronik photometer
Interfaces RS-232-C for connecting a PC; CAN Bus for DSP measurement amplifier and remote control RecoCAN
System setup Separate 19″ rack 33 U (dimensions of rack: 1650 x 552 x 600 mm)
Power supply and max. consumption 230 V; approx. 2000 VA

Further Information:

Order  no.              Description
Goniometer
LGS1000-100 LGS 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-440 Stray 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-450 Stray light tube with ±30° opening angle for the measurement of luminous flux in the near field; for EOP 120 or photometer head
LGS-470 Rack for spectroradiometer CAS 140CT
AC current sources and power meters
W-301 100 V / 115 V mains voltage for AC current sources with 250, 500 and 1000 W
W-302 240 V mains voltage for AC current sources with 250, 500 and 1000 W
W-310 AC current source 250 VA
W-310-1 AC current source 250 VA and expanded voltage range 0-500 V AC
W-320 AC current source 500 VA
W-320-1 AC current source 500 VA and expanded voltage range 0-500 V AC
W-330 AC current source 1000 VA
W-330-1 AC current source 1000 VA and expanded voltage range 0-500 V AC
W-410 Measuring unit for determining electrical quantities
Photometer
LGS-610 Photometer 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-630 Calibration in illuminance; incl. factory calibration certificate and verification of spectral correction of the detector

Download Data Sheet

LGS 1000 Goniophotometer

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