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| goniophotometer ： ウィキペディア英語版 |
goniophotometer
A Goniophotometer is a device used for measurement of the light emitted from an object at different angles. 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. If a light source is homogeneous in its distribution of light, it is called a Lambertian source. Due to strict regulations, the spatial distribution of light is of high importance to automotive lighting and its design.
==Types==
The various types of goniophotometer are defined here〔(【引用サイトリンク】 title=The goniometer types A / B / C )〕 which is derive from a publication from the International Commission on Illumination .
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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