Optical configurations with two or more micro structured films
First Claim
1. A lighting unit, comprising:
- an arrangement of a plurality of light source units configured to emit light;
a first foil comprising a plurality of transmissive first foil regions, wherein each first foil region comprises a plurality of optical elements comprising an optical element with refractive functionality to the light source unit light in a center of each region and a different optical element with total internal reflection functionality to the light source unit light in a peripheral area remote from said center in each region; and
a second foil comprising a plurality of transmissive second foil regions, wherein each second foil region comprises a plurality of optical elements wherein each second foil region comprises at its center an optical element with refractive functionality to the light source unit light and in a peripheral area remote from its center a different optical element with total internal reflection functionality to the light source unit light;
wherein each light source unit has a corresponding first foil region configured downstream of said light source unit and a corresponding second foil region configured downstream of said first foil region.
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Accused Products
Abstract
The invention provides a lighting unit (10) comprising (i) an arrangement (111) of a plurality of light source units (100) configured to provide corresponding light source unit light (101), (ii) a first foil (210) comprising a plurality of transmissive first foil regions (211), wherein each first foil region (211) comprises a plurality of optical elements (212), and (iii) a second foil (220) comprising a plurality of transmissive second foil regions (220), wherein each second foil region (221) comprises a plurality of optical elements (222), wherein each light source unit (100) has a corresponding first foil region (211) configured downstream of said light source unit (100) and a corresponding second foil region (221) configured downstream of said first foil region (211).
15 Citations
18 Claims
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1. A lighting unit, comprising:
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an arrangement of a plurality of light source units configured to emit light; a first foil comprising a plurality of transmissive first foil regions, wherein each first foil region comprises a plurality of optical elements comprising an optical element with refractive functionality to the light source unit light in a center of each region and a different optical element with total internal reflection functionality to the light source unit light in a peripheral area remote from said center in each region; and a second foil comprising a plurality of transmissive second foil regions, wherein each second foil region comprises a plurality of optical elements wherein each second foil region comprises at its center an optical element with refractive functionality to the light source unit light and in a peripheral area remote from its center a different optical element with total internal reflection functionality to the light source unit light; wherein each light source unit has a corresponding first foil region configured downstream of said light source unit and a corresponding second foil region configured downstream of said first foil region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of using a lighting unit, comprising:
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providing an arrangement of a plurality of light source units configured to emit light; disposing a first foil comprising a plurality of transmissive first foil regions, wherein each first foil region comprises a plurality of optical elements comprising an optical element with refractive functionality to the light source unit light in a center of each region and a different optical element with total internal reflection functionality to the light source unit light in a peripheral area remote from said center in each region; disposing a second foil comprising a plurality of transmissive second foil regions, wherein each second foil region comprises a plurality of optical elements wherein each second foil region comprises at its center an optical element with refractive functionality to the light source unit light and in a peripheral area remote from its center a different optical element with total internal reflection functionality to the light source unit light; configuring each light source unit with a corresponding first foil region downstream of said light source unit and a corresponding second foil region configured downstream of said first foil region; and controlling the shape of a beam of light from the light source unit light of the arrangement of a plurality of light source units. - View Dependent Claims (17, 18)
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Specification