Goniophotometer

Manual (1), and Mitscherlich's optical (2) goniometers for use in crystallography, c. 1900

A Goniophotometer is a device used for measurement of the light emitted from an object at different angles.[1] The use of goniophotometers has been increasing in recent years with the introduction of LED-light sources, which are mostly directed light sources, where the spatial distribution of light is not homogeneous. [2] If a light source is homogeneous in its distribution of light, it is called a Lambertain source. [3] Due to strict regulations, the spatial distribution of light is of high importance to automotive lighting and its design.

References

  1. ↑ Marx, P. (1997). "New goniophotometers for light-engineering laboratories". Light & engineering 5 (4): 32–36.
  2. ↑ Lindemann, Matthias; Maass, Robert (15 December 2009). "Photometry and colorimetry of reference LEDs by using a compact goniophotometer". MAPAN 24 (3): 143–152. doi:10.1007/s12647-009-0018-6.
  3. ↑ Palmer, James (2010). The Art of Radiometry. Bellingham, Washington: SPIE. p. 27. ISBN 9780819472458.

See also