1998-02-23

Study of Tubular Volume Light Source Intensity Distribution 980320

Neon light sources offer unique challenges to the optical design of automotive lighting. When the tubular neon light source was first introduced, its luminous intensity distribution was assumed to be the same as other tubular sources, such as fluorescent tubes. However, upon investigation and analysis of measured data it became apparent that unlike fluorescents, neon tubes, as a volume source, provide a unique luminous intensity distribution instead of the familiar Lambertian distribution. This paper will develop an optical model for a tubular volume light source (neon tube), and further results will identify the effects of other optical elements, such as fluted lensing.

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