FIELD: electricity.
SUBSTANCE: tube comprises a gas-discharge source of light of high-intensity and a reflector comprises the first light-reflecting structure to generate an opening angle of a substantially uniform narrow beam and the second light-reflecting structure, different from the first structure. The second light-reflecting structure comprises a facility to scatter light around the opening angle of the substantially uniform narrow beam in the form of a matte surface or speckle surface. Besides, the specified light-scattering facility comprises a narrowing cylindrical form.
EFFECT: improved homogeneity of light and even lighting.
16 cl, 6 dwg
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