{
  "$type": "site.standard.document",
  "description": "An optical system includes, in order from an enlargement conjugate side to a reduction conjugate side, a front unit including three or more lenses, a diaphragm (ST1, ST2, ST3), and a rear unit including a plurality of lenses. The front unit includes a first positive lens (L1, L21, L31) closest to…",
  "path": "/patents/1408207",
  "publishedAt": "2024-09-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60R1/23",
    "CANON KK [JP]"
  ],
  "textContent": "An optical system includes, in order from an enlargement conjugate side to a reduction conjugate side, a front unit including three or more lenses, a diaphragm (ST1, ST2, ST3), and a rear unit including a plurality of lenses. The front unit includes a first positive lens (L1, L21, L31) closest to an enlargement conjugate position, and a second positive lens (L4, L24, L34). A predetermined condition is satisfied.",
  "title": "OPTICAL SYSTEM, IMAGE PICKUP APPARATUS, IN-VEHICLE SYSTEM, AND MOVING APPARATUS"
}