LGS 350
Compact, space-saving goniophotometer
Spatial characterization of medium-sized SSL light sources and LEDs
The LGS 350 goniophotometer or goniospectroradiometer was developed by Instrument Systems for determining the angle-dependent spatial radiation properties of small to medium-sized SSL luminaires and LED modules. The light source is operated in a horizontal burning position and can be measured in an angle range of ±160° to the mechanical axis.
Together with an Instrument Systems spectroradiometer, all spectral parameters such as color coordinates, color temperature and even color rendering index are determined angle-dependent. Photometer DSP 200 can also be used for fast “on the fly” measurement of C-levels.
The instrument is suitable for samples with a diameter of up to 700 mm and a weight of 8 kg.
Versatile sample holder
Thanks to its universal sample holder, the LGS 350 is suitable for a wide range of measurement tasks on medium-sized LED modules and luminaires. In addition, it has a sample holder for LED-850/LED-870 TEC adapter and standard lamp base E27.
The following versions of the LGS 350 are available for various applications in the lightlab:
- Goniometer with a sturdy base and integral LGS controller. It is compact and has a small footprint, offering extremely high mechanical stability.
- Goniometer as a table version with a separate 19” rack for the LGS controller. This instrument version is mobile and flexible in use.
Specification | Description |
|---|---|
| Travel range C-axis | ±160°, safeguarded by limit switches |
| Travel range γ-axis | ±160°, safeguarded by limit switches |
| Resolution of the angle encoder | 0.01° |
| Reproducibility of C-axis | ≤ 0.1° (under max. sample load) |
| Reproducibility of γ-axis | ≤ 0.05° (under max. sample load) |
| Dimensions (H x W x D); weight | 1432 x 500 x 650 mm3; 95 kg |
| Max. sample size/weight | 700 x 140 mm² or 640 x 230 mm² or 500 x 500 mm² (each for symmetrical assembly) / 8 kg |