Goniophotometer

Multi Goniophotometers in 1 facility

The GO-R5000 integrates more powerful functions such as near field, middle field and far field distribution goniophotometer, which can be used for spatial luminous intensity distribution and total luminous flux test of indoor lighting lamps, floodlights, street lamps, etc. Equipped with imaging luminance meter and spectroradiometer, it can measure the spatial luminance distribution and spatial spectral color distribution of the light source.

Features

• Internationally Recognized High-end Reflector Type Goniophotometer
  By the academician led by the domestic authoritative expert group appraisal, won the "international leading" evaluation. It was reported by the authoritative German professional magazine (LICHT), and was authorized by the "China Excellent Patents Award" and the invention patent of China, Germany and US.
• The Highest Accuracy of Total Luminous Flux
  The detector located in the near field can use the illuminance integration method recommended by the CIE to achieve the highest precision measurement of the total luminous flux of various luminaires and light sources, which is the national benchmark for the total luminous flux in the photometric laboratories of major developed countries.
• Absolute Stability of Light Source
  The measured light source is always static in the measurement, to achieve the best stable working state of the measured light source and the lamp, to avoid many unstable factors caused by movement, in the measurement of temperature and rotation of the lamp is more sensitive, the stability of the light source in GO-R5000 goniophotometer is about 10 times higher than the general center rotation type goniophotometer.
• Fast Measurement Speed
  The system adopts the measurement method of detector rotation to avoid the rotation of the measured lamp around the horizontal axis, and the operation of the measured lamp can be very quick, and the precision transmission mechanism and high-speed angle coding system can achieve the measurement speed of about 6 times faster than the general goniophotometer.
• Multi-fields & Multi-functions measurement
  The EVERFINE GO-R5000 Goniophotometer can be flexibly configured with multiple different detectors to achieve near field, middle field and far-field measurement according to the actual requirement of the customer. So GO-R5000 is equivalent to having a combination of multiple goniophotometers with different functions, which can achieve the function of six in one.
• Extremely Wide Dynamic Measurement & High Sensitivity Measurement
  GO-R5000 enables extremely wide dynamic range measurements and highly sensitive detection capabilities, approximately 100 times wider than the dynamic range of an equivalent center-rotating mirror type goniophotometer.
• High Stray Light Control
  It can avoid multiple reflections in the narrow space to affect the detector measurement, and at the same time, the precision design of the extinction cylinder and the stop diaphragm achieves superior performance of the anti-stray light effect.
• Save Space & Retrofit costs
  The system adopts a very clever dual mirror design, which reduces the size requirement of darkroom space and the cost of retrofit compared with other rotating mirror type goniophotometer.
• Spatial Color Distribution & Spatial Luminance Measurement Optional
  It can measure the spatial color distribution, average color characteristics and spatial non-uniformity of various light sources and luminaires, and measures the spatial luminance distribution of various light sources.

Technical Specifications

Model	GO-R5000
Automatic Luminaire Rotation Range	0°–360° (C-axis); −180°–+180° (γ-axis)
Angular Accuracy	0.1° for both the C-axis and γ-axis
Angular Control Resolution	0.001°
Total Luminous Flux Accuracy	1% (excluding the uncertainty of the reference lamp)
Photometer Head	Class L (f1′ ≤ 1.5%), precision temperature-stabilized, with integrated preamplifier
Photometric Measurement Range	0.0001lx-200klx
Scanning Speed	Fast/medium/slow, selectable as required
Test Speed	1/12–1 rpm
Photometric Data File Formats	*.GOS    *.CIE    *.CEN    *IES    *.Tm14    *.CIB    *.LDT