OPTICAL LENS WITH SOFT-FOCUS EFFECT

The optical lens, especially for a motor vehicle, is provided with a soft-focus effect, e.g. to soften a light-dark boundary on an illuminated surface. For this purpose the optical lens has an optically active surface ( 5 ') provided with an embossed fine structure ( 2 ) extending radially outw...

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Bibliographische Detailangaben
Hauptverfasser:	SEMAR, WOLFGANG, BIERTUEMPFEL, RALF, REDEY, MATTHIAS, BONITZ, RALF
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LIGHTING MECHANICAL ENGINEERING OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	The optical lens, especially for a motor vehicle, is provided with a soft-focus effect, e.g. to soften a light-dark boundary on an illuminated surface. For this purpose the optical lens has an optically active surface ( 5 ') provided with an embossed fine structure ( 2 ) extending radially outward in a direction from an optical axis (O) toward an outer periphery (P) in an undulating form and an embossed microstructure ( 3 ) superimposed on the embossed fine structure ( 2 ). The fine structure ( 2 ) has a roughness that is greater than that of the microstructure ( 3 ). The fine structure ( 2 ) preferably has a roughness of from 1 mum to 10 mum and the microstructure ( 3 ) has a roughness (h) in a range of from 0.1 mum to 2.5 mum.