GO-R5000 FULL-FIELD SPEED GONIOPHOTOMETER GO-R5000

Specifications and Product Details:

Introduction :
Challenge the limitation of Goniophotometer 6 Goniophotometer in 1 facility 1. Compact goniophotometer 2. Near-field goniophotometer 3. Goniospectroradiometer 4. Quasi-far-field measurement 5. Far-field measurement 6. Full-Field Goniophotometry

6 goniophotometers in 1 facility GO-R5000 Full-field Speed Goniophotometer, which combines the near-field, quasi-far-field and far-field goniophotometers and more powerful functions in one facility. Specifications : Photometry: (1) Accuracy of photometer head : CLASS L, f1’<1.5% (2) Linearity of photometry :0.2% (3) Reproducibility of photometry : 0.1%( for stable lamps) (4) The detecting ability of photometer :1×10^-5/1×10^-4/1×10^-3lx/0.01lx (on request) (5) Measuring Range of illuminance: 1×10^-5/1×10^-4/0.001lx~20klx/200klx (on request) (6) Measuring Range of the luminous Intensity : 4.0×10^-5/4.0×10^-4/4.0×10^-3cd/4.0×10^-2cd~1.8×10⁷cd/1.8×10⁸cd (on request, widest in the world) Angle C angle: Rotation range :0°~360° Angle accuracy :0.1°/0.05° (The highest accuracy in the world) γ angle: Rotation range : -180°~ +180° Angle accuracy :0.1°/0.05° (The highest accuracy in the world) Measurement speed :Up to 3rpm and adjustable Max.characteristics of lamps or luminaries: 50kg ; 300W/10A,AC/DC Full-Field Speed Goniophotometer The Full-Field Speed Goniophotometer is upgraded from the 2M2D goniophotometer by the advanced goniophotometer theory of multi-field combination and detectors mutual correction, and the technics are much more matured . It has high measurement speed & accuracy and flexible configuration. Powerful functions can be realized when the cost is not increased so much. Detector D1 directly receives light from the light source to realize near-field measurement, the typical measurement distance is around 2~3m. Detector D1 can be a photometer head or multi detectors. And the system can be compact that only equips Detector D1, or it can be a mirror type. For the later, M1 is covered when Detector D1 works.

Compact goniophotometer
It can work as a compact goniophotometer when Detector D1 is a photometer head. It suits to measure the luminous intensity of small or weak sources. And it is the best way to measure total luminous flux of various size sources by illuminance integrating method which is recognized as the most accurate by the CIE.

Near-field goniophotometer
It can work as a near-field goniophotometer when detector D1 is an imaging luminance meter which measures the luminance in a plane synchronously. It can measure the spatial luminance distribution of light sources, and with special analysing software, it can deduce the far field quantities, e.g. luminous intensity, illuminance distribution in every section by ray tracing and correction.

Quasi-far-field measurement
The synchronous Detector D2 receives the reflection light from Rotating Mirror M1 to realize quasi-far-field measurement, the typical distance is around 15m. It suits to measure the luminous intensity of large size & wide beam angle sources, e.g. indoor lights, road lights and so on.

Far-field measurement
Detector D3 receives the light after twice reflection by Rotation Mirror M1 and Fixed Mirror M2, it realizes the far-field measurement, the typical distance is around 30m. And the dark room space is not enlarged accordingly. It can be applied for the intensity measurement of large size sources & narrow beam angle sources, e.g. flood lights.

Full-field goniophotometry
As there are multi detectors configured in the system, by the special software, it can realize mutual corrections between detectors to further increase the accuracy, and it can analyze the photometric and goniophotometric quantities in any spatial section in full-space with the ray-analysing software.

Extremely high measurement speed (6 times faster)
The system avoid the rotation of the test lamps around horizontal axis, and the rotation speed around the test light source can be extremely high. Precise driving device and high-speed angle encoder make it realize as high as 6 times than general type of goniophotometers without losing accuracy.

Highest total luminous flux accuracy for all kinds of luminaires and lamps
The photometer head at Detector D1 can achieve highest total luminous flux accuracy for all kinds of luminaires and lamps by the illuminance integrating method which is recommended by CIE84-1989, this method is also applied by many national standard laboratory to realize the national total luminous flux standards.

Ultra-low stray light
The whole system is working in a relative open space, the unexpected light can go far away from the measuring light path. It is much better than the situation when a great deal of stray light is reflected in narrow channel. Precisely designed long nose stray light reducer and baffles have excellent anti-stray light performance.

Extremely high angle accuracy
The drivirg principle is relatively simple and reliable. The angle encoder is located at the end out-put axis.The precise closing-ring mechanism makes GO-R5000 Goniophotometer realize the extremely high angle accuracy even under high measurement speed.

Space saving
The height requirement of the dark room is much lower than other goniophotometers with rotating mirrors.
The arrangement of two mirrors largely saves the space occupancy of the darkroom .
If the customer selects the near-field function only, the dark room can be very compact. And the system can still realize high measurement accuracy (including far-field distribution measurement).