EN
RayClouds Photoelectric Technology Co.,Ltd.
RayClouds Photoelectric Technology Co.,Ltd.

Near-field Distribution Measurement Method

Two-axis goniometer

The two-axis goniometer supports vertical angle of adding or decreasing 90 degrees’ inclination (from upward to downward) and horizontal rotation from left to right of adding or decreasing 90 degrees. The angular accuracy of the two rotating axes is 0.25 degrees.

The unique feature of mechanical design is the use of rectangular frames, which not only roughly defines the measurement plane, but also provides a more stable fixed point of light source. It can support a balanced light source which is up to 25 kg.

Some light sources may exceed the boundary of the frame, and the length of the lamp tube is 1.2m, which can also be measured. If need, the frame can be connected to the power supply of the light source which needs to be measured.

At the same time, its circuit is very simple, so it will not affect the rotation of the goniometer in the measurement process, which is NFMS-800 of the Radiant Zemax.

Imaging colorimeter

The imaging colorimeter used in the system must have sufficient spatial resolution and dynamic range to measure the details of the light source.

Because the light source is directly irradiated, ND filters may be used. The principle of choosing lens focal length is that the imaging colorimeter can capture all the details of the light source at a proper distance from the angle meter. Imaging colorimeter can measure chroma parameters, photometric parameters or radiometric parameters.

Measurement Control and Analysis Software

The control software controls the position of the angle meter, that is, the light source, relative to the imaging colorimeter, that is, the order of measurement. Its other function is to synchronize the imaging colorimeter with the goniometer.

In addition, the software can integrate all measurements into the near-field model of the light source, and at the same time, it calla out a separate measurement image.

Related News
  • Glare Measurement Method in Lighting Spot

    Glare Measurement Method in Lighting Spot

    May 15, 2019Theoretical calculation:Based on the light distribution curve and the size of the lamps measured in the laboratory, the glare index under typical ideal lighting environment (such as lighting arrangeme...view
  • Setting and Execution of Near-field Distribution Measurement

    Setting and Execution of Near-field Distribution Measurement

    May 15, 2019Before measuring the setting, the imaging colorimeter should be accurately placed at the center of the angular meter.In this way, the central axis of the imaging colorimeter (note: the central line of...view
  • What Kinds of Luminance Meters are Common?

    What Kinds of Luminance Meters are Common?

    December 11, 2020In recent years, increasingly stringent testing of the brightness and colorimetric light sources and the need for rapid determination of faint light has led to the application of luminance meters. But...view
  • New Meteorology of Mobile Module Market

    New Meteorology of Mobile Module Market

    July 11, 2019In the past few years, in order to meet the huge demand brought by the incremental mobile phone market in China, the mobile display module processing industry and the mobile module measurement system ...view
  • Functions of LCD Luminance Meter

    Functions of LCD Luminance Meter

    July 11, 2019LCD luminance meter can measure the brightness of light source or object in the non-contact state by using a lens imaging principle and telescope optical system. LCD luminance meter is tested for brig...view
  • What Factors Are the Key to the Popularity of Spectroradiometers?

    What Factors Are the Key to the Popularity of Spectroradiometers?

    February 19, 2021It can be said that spectroradiometer is a precise instrument that needs to be used in many fields. Continuous updating and optimization of technology widen the scope of its application. Now it has be...view


LATEST_NEWS



Contact