LGS 350 Goniophotometer measures the angular of light emitted by a source
Built for Mid-sized SSL Light Source and LED Modules.
The LGS-350 Goniophotometer is a high-precision instrument designed by Instrument Systems for measuring the light distribution properties of lamps, luminaires, and other lighting products. It is a versatile and reliable tool that enables lighting manufacturers to evaluate and optimize the performance of their products.
The LGS-350 Goniophotometer measures the angular distribution of light emitted by a source, enabling users to analyze key parameters such as luminous flux, luminous intensity, and color. The instrument is capable of measuring light at angles ranging from -180 to +180 degrees, with a resolution of 0.01 degrees.
The LGS-350 Goniophotometer is designed for ease of use and flexibility, with a modular system that can be customized to meet the specific needs of each user. It includes a range of features, such as a built-in camera for capturing images of the tested products and software for analyzing the results.
LGS 350 goniophotometer is built for mid-sized SSL light sources and LED modules for the analysis of angle-dependent spatial radiation properties. The test specimen is operated in a horizontal burning position and measurements can be taken at an angular range of ±160° in the gamma axis. The angular resolution of 0.01° means that very fine measuring grids can be recorded with a high level of accuracy and reproducibility. The LGS 350 is compliant with all the relevant specifications in conformity with CIE, DIN and IES standards.
A universal sample holder for mid-size LED modules and lamps, and a lamp holder for standard fittings of the type E10, E27, E40, etc. are supplied. Sample holders for TEC test adapters of the LED-850 and LED-870 series are available to plug and go. The test adapters facilitate the analysis of thermal properties of single LEDs, LED arrays and modules using minimum resources. The Peltier elements integrated in the test adapters permit adjustment over a wide temperature range from +5°C to +85°C.
The LGS 350 is compatible with all spectroradiometers supplied by Instrument Systems. The CCD array spectrometers in the CAS series are ideal because they feature a very large dynamic measuring range and very short measuring times. The use of a spectroradiometer offers the unique advantage that photometric, radiometric and colorimetric quantities can be obtained from the measured spectral data. Specifically for SSL lamps and LED modules, measurement accuracy is superior to filter-based photometers and colorimeters.
Overall, the LGS-350 Goniophotometer is a powerful and reliable tool for lighting manufacturers and researchers, providing precise and accurate measurements of light distribution properties. Its flexibility and ease of use make it a valuable tool for a wide range of applications in the lighting industry.
LGS 350 Goniophotometer
- 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
LGS 350 Goniophotometer
| Model | LGS 350-100 Goniophotometer | LGS 350-110 Goniophotometer |
| Equipment setup | Stable base with integrated LGS Controller | Benchtop version with LGS Controller in a separate 19″ rack |
| 10″ module slots | 14 U in height; 10 U occupied, 4 U free | 9 U in height; fully occupied, optionally more |
| Height (mm) | 1432 | 740 |
| Width (mm) | 500 | 500 |
| Depth (mm) | 650 | 650 |
| Weight | approx. 95kg | approx. 60 kg |
| Height of optical axis | 1372 mm ±5mm (adjustable) | 680 mm ±5mm (adjustable) |
| Goniometer | ||
| CIE goniometer type | Type C with horizontal optical axis | |
| Driver | Stepper motors | |
| Angular range C axis | ±160° with end switches, -10° ~ 190° used measurements) | |
| Angular range ꝩ axis | ±160° with end switches | |
| Angular resolution | 0.01° | |
| Reproducibility C axis | ≤ 0.1° (at max. sample load) | |
| Reproducibility ꝩ axis | ≤ 0.05° (at max. sample load) | |
| Angular speed C axis | 16 speeds selectable from 2.5 °/s to 36 °/s | |
| Angular speed ꝩ axis | 16 speeds selectable from 1 °/s to 18 °/s | |
| Clear width C axis – swivel arm | 370 mm | |
| Alignment laser | Integrated in the centre of rotation of the C axis. 1 mW. Laser class 2 | |
| Machine saftey | Emergency stop switch on the goniometer and the LGS Controller, safety strips on the swivel arm | |
| Sample table | ||
| Mounting plate | 100 x 100 mm with 2 x 2 grooves size 6 (inside dimension 50mm) for slot nuts size 6 – M5 or T-bolts M6; also 2 tapped threads M6 x 12 (inside dimension 80 mm) | |
| Maximum sample size | 700 x 140 mm or 640 x 230 mm or 500 x 500 mm (in each case for symmetrical mounting) | |
| Maximum sample mass | 8 kg | |
| Electrical sample connection | 2 safety banana sockets for specimen power supply; 2 safety banana socket for probe cable; 1 protective conductor; max. 300V, 10A. | |
| LGS Controller | ||
| Functions | Driving the stepper motors for the goniometer; display of the angle positions; optional display of measured values for the DSP 10 photometer | |
| Interfaces | RS-232C for connecting a PC; CAN bus for DSP 10 photometer and RecoCAN remote control | |
| Power supply | 230 VAC (optional 115VAC) | |
| Power rating | 120W | |
| LGS Motion Driver | ||
| Functions | Power electronic for goniometer, main switch for goniometerpower suppoy, start buttin to unlock gears, emergency stop switch, Laser on/off switch, connection to RecoCAN remote control | |
| Interfaces | Circular connector for stepper motors, CAN bus for LGS Controller, Sub-D for control signal of goniometer, power socket for power supply LGS Controller | |
| Power supply | 230 VAC (optional 115VAC) | |
| Power rating | 720W | |
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