LGS 350 - Perfect for mid-sized SSL light sources and LED modules
The LGS 350 Goniophotometer / Goniospectroradiometer was developed for the analysis of angle-dependent spatial radiation properties from small to medium-sized SSL luminaires and LED modules. The test specimen is operated in a horizontal burning position and measurements can be taken at an angular range of ±160° in the gamma / theta axis.
Combined with a spectroradiometer from Instrument Systems, all spectral quantities such as color coordinates, color temperature and even color rendering index are determined as a function of angle. The Optronik DSP Photometer can also be used to carry out C-plane measurements very quickly “on the fly”.
The complete system
The LGS 350 comprises the goniometer with a sample plate for fixing the test specimen and the LGS Controller that drives the stepper motor and the angle display. If a photometer is used, the LGS Controller also displays the measured values in candela or lux.
The following versions of the LGS 350 are supplied:
Goniometer with stable base and integrated LGS Controller. The structure is particularly space-saving and compact, as well as providing very high mechanical stability with the floor.
Goniometer in benchtop version with separate 19” rack for the LGS Controller. This configuration is mobile and can be used flexibly.
Features:
Type C goniophotometer with horizontal optical axis
For samples up to 700 mm diameter and 8 kg weight
Accurate determination of the luminous intensity distribution and luminous flux
Angular-resolved analysis of spectral and colorimetric quantities
Data export in IES and EULUMDAT format
Technical Specifications:
LGS 350 Goniophotometer
Goniometer
CIE goniometer type
Type C with horizontal optical axis
Driver
Stepper motors
Angular range C axis
± 160° with reset switches
Angular range Gamma axis
± 160° with reset switches
Resolution of the angle encoder
0.01°
Reproducibility C axis
≤ 0.1° (at max. sample load)
Reproducibility Gamma axis
≤ 0.05° (at max. sample load)
Angular speed C axis
16 speeds selectable from 2.5°/s to 36°/s
Angular speed Gamma axis
16 speeds selectable from 1°/s to 18°/s
Clear width C axis - swivel arm
370 mm/s
Sample table
Maximum sample size
700 x 140 mm² or 640 x 230 mm² or 500 x 500 mm² (in each case for symmetrical mounting)
Maximum sample mass
8 kg
Ordering Information:
Ordern number
Description
Goniometer
LGS350-100
LGS 350 Goniometer with stable base; 2-axis goniometer in type C configuration with horizontal optical axis; integrated 19” rack for LGS Controller (includes stepper-motor control and space for another 2 modules); without photometer or spectroradiometer
LGS350-110
LGS 350 Goniometer in benchtop version; 2-axis goniometer in type C configuration with horizontal optical axis; separate 19” rack for LGS Controller (includes stepper-motor control and space for one further module); without photometer or spectroradiometer
Options
LGS350-300
Optional 115 VAC power supply unit for LGS 350
LGS350-310
Optional 19” freestanding rack for LGS350-110; 33 U high (170 cm) for mounting additional units
LGS350-320
RecoCAN remote control for manual angle positioning
LGS350-510
Sample holder for LED-850 TEC adapter for LEDs
LGS350-520
Sample holder for LED-870 TEC adapter for small LED modules
LGS350-530
Sample holder for LED-880 TEC adapter for mid-size LED modules
LGS350-550
Universal sample holder for mid-size LED modules and lamps
LGS350-570
Standard lamp holder for E27
LGS-410
Stand with mount for a straylight tube; height of the optical axis approx. 1200-1400 mm (variable)
LGS-440
Straylight tube with ± 4.5° opening angle for measurement of luminous intensity distribution in the far field; for EOP-120 or photometer head PMH-100
LGS-450
Straylight tube with ± 45° opening angle for measurement of luminous flux in the near field; for EOP-120 or photometer head PMH-100
LGS-470
Mobile cart for spectroradiometer
LGS-610
Optronik Line DSP 10 photometer comprising PMH-100 photometer head and measuring amplifier for connecting to LGS Controller
