{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "A convex-concave Fresnel-lens for a lighting unit of a vehicle is provided. The convex-concave Fresnel-lens includes a convex input surface and a concave output surface. The concave output surface includes a Fresnel structure. The concave output surface has a first radius of curvature, and the…",
  "path": "/patents/1435060",
  "publishedAt": "2026-07-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G02B3/08",
    "HELLA GMBH & CO. KGAA"
  ],
  "textContent": "A convex-concave Fresnel-lens for a lighting unit of a vehicle is provided. The convex-concave Fresnel-lens includes a convex input surface and a concave output surface. The concave output surface includes a Fresnel structure. The concave output surface has a first radius of curvature, and the convex input surface has a second radius of curvature. The convex input surface is configured to be oriented towards a light source of the lighting unit.",
  "title": "CONVEX-CONCAVE FRESNEL LENS"
}