Hehkulab

Light solutions for light metrology

Fisheye camera method

Quick measurements of light intensity distributions

In a matter of seconds, using a fisheye-lens camera, the system measures the high-resolution light intensity distribution of the lamp or luminaire under test. The system also automatically calculates the spatial correction factor for the luminous flux measurement.

The fisheye camera method reduces measurement uncertainty in luminous flux measurements with integrating spheres. It is especially useful when measuring LED light sources and other lighting products with non-uniform angular distributions.

Our turnkey solution comes at a fraction of the operating and investment costs compared with traditional goniophotometers. For the science behind the method, have a look at [1] and [2].

Anglerfish software

The software handles all the necessary image capturing, processing and data analysis automatically. To obtain the luminous intensity distribution, all you need to do is switch the light source on.

The software supports exporting and importing data to and from different file formats such as IES LM-63 (.ies) and EULUMDAT (.ldt), making it easy to integrate fisheye camera method to your existing system.

Anglerfish software user interface
Fisheye camera method

Option A: Let us handle it

On-site installation, calibration, and validation

A two-day visit, which includes

  • calibrated camera and suitable fisheye lens
  • design and manufacturing of the camera/sphere adapter
  • automated software modified for your sphere
  • source code of the software
  • characterized reference lamp
  • detailed operation instructions
  • training of the personnel
  • calibration and validation of the system
  • mapping spatial responsivity of the sphere
  • uncertainty budget for the spatial correction
  • remote support after the visit

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Fisheye camera method

Option B: Install it yourself

Hardware, software, and remote support

Fisheye camera system for measuring light intensity distributions

  • calibrated camera and suitable fisheye lens
  • design and manufacturing of the camera/sphere adapter
  • automated software modified for your sphere
  • source code of the software
  • characterized reference lamp
  • detailed operation instructions
  • remote support for and after installation

Contact us