Free-Form Lenticular Optical Elements and Their Application to Condensers and Headlamps
First Claim
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1. A Kohler-integration illumination optical system, comprising:
- a first surface; and
a second surface;
wherein each of the first and second surfaces comprising 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;
wherein at least for one of the first and second surfaces the edges lines of its lenticulations reside on a free-form surface.
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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.
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Citations
50 Claims
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1. A Kohler-integration illumination optical system, comprising:
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a first surface; and a second surface; wherein each of the first and second surfaces comprising 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; wherein at least for one of the first and second surfaces the edges lines of its lenticulations reside on a free-form surface. - View Dependent Claims (3, 4, 5)
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2. (canceled)
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6. (canceled)
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7. A refraction, reflection, internal reflection and refraction (RXIR) integrator headlamp lens, comprising:
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a non-circular cross-section; and three optically active free-form surfaces, said three surfaces comprising an entry surface, an upper internally reflecting surface, and a lower reflecting surface, said entry surface comprising zones of two-directional free-form lenticulations and zones of one-directional lenticulations, said lower reflecting surface comprising zones of two-directional free-form lenticulations and zones of one-directional lenticulations acting in concert with said lenticulations of said entry surface; and wherein the entry surface, upper internally reflecting surface, and the lower reflecting surface fulfill a vehicular illumination prescription that includes cutoff-gradient and hot-spots in the output intensity pattern. - View Dependent Claims (9)
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8. (canceled)
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10. (canceled)
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11. A rotationally symmetric optical system receiving light from a source and sending it to a target, the system comprising:
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five optical surfaces, which are ordered by a light trip from a source toward a target; the five optical surfaces comprising a first refractive surface, a second refractive surface, a primary mirror surface, a secondary mirror surface, and a refractive dome; wherein the refractive dome is positioned above the target; wherein the fist refractive surface and the second refractive surface define a change of material and refractive index; and wherein two of the five surfaces have coordinated lenticulations forming a Kohler radial integrator with the source and the target. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 29, 30, 31, 32, 33, 34)
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12-13. -13. (canceled)
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24. An optical system, comprising:
a refractive, reflective and internally reflective (RXI) concentrator comprising an upper cover comprising a flat upper surface receiving light from a source and a lenticulated lower surface, a lower RXI concentrator lens, a lower-index gap-filling material between the lenticulated lower surface and the lower RXI concentrator lens, and a refractive dome above a target, said RXI lens comprising an upper lenticulated surface matching said lenticulated lower surface of said upper cover and a correspondingly lenticulated primary mirror reflecting said received light onto said upper lenticulated surface for total internal reflection by said gap-filler material onto said dome and onto the target. - View Dependent Claims (25)
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26. A rotational 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 first surface a second surface, a third surface, and a refractive dome above the target; 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 with the source and the target. - View Dependent Claims (27, 28)
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35. A rotational 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 the light path from the source towards the target, such that the four optical surfaces comprise a first flat refractive surface, and second, third and fourth refractive surfaces; wherein the first flat refractive surface and the second, third and fourth refractive surfaces define changes of material and refractive index, and where two of the four surfaces have coordinated lenticulations forming a Kohler radial integrator with the source and the target. - View Dependent Claims (36, 37)
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38. A refractive, reflective, internal reflective and refractive (RXIR) concentrating lens surrounding a central target, the lens comprising:
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an exit surface and a reflecting surface, where the exit surface comprises circumferential lenticulations; wherein said lenticulations providing at least in part radial Kohler integration of an illumination of said target. - View Dependent Claims (39, 50)
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40. An etendue-squeezing lens, comprising:
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an input surface; and an output surface; wherein said input and output surfaces are tessellated with differently tilted lenslets. - View Dependent Claims (41, 42, 43, 44, 45)
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46-49. -49. (canceled)
Specification