Free-form lenticular optical elements and their application to condensers and headlamps
First Claim
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1. A rotation symmetric optical system receiving light from a source and sending it to a target, the system comprising:
- four optical surfaces, which are ordered by a light trip from the source towards the target,wherein the four optical surfaces comprise a first surface, a second surface, a third surface, and a fourth surface;
wherein the second surface defines a change of material and refractive index and where two of the four surfaces have coordinated lenticulations forming a Kohler radial integrator such that one surface of the Kohler radial integrator images the source onto another surface of the Kohler radial integrator and the another surface of the Kohler radial integrator images said one surface onto the target.
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Abstract
Some embodiments provide an illumination optical system. The optical system can include a first surface and a second surface. Each of the first and second surfaces can further comprises a multiplicity of corresponding Cartesian-oval lenticulations such that each lenticulation of the first surface focuses a source upon a corresponding lenticulation of the second surface and each lenticulation of the second surface focuses a target upon a corresponding lenticulation of the first surface.
194 Citations
24 Claims
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1. A rotation symmetric optical system receiving light from a source and sending it to a target, the system comprising:
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four optical surfaces, which are ordered by a light trip from the source towards the target, wherein the four optical surfaces comprise a first surface, a second surface, a third surface, and a fourth surface; wherein the second surface defines a change of material and refractive index and where two of the four surfaces have coordinated lenticulations forming a Kohler radial integrator such that one surface of the Kohler radial integrator images the source onto another surface of the Kohler radial integrator and the another surface of the Kohler radial integrator images said one surface onto the target. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification