{
  "$type": "site.standard.document",
  "description": "A single focal length lens system which, in order from an object side to an image side, includes a first unit, an aperture diaphragm, and a second unit is provided. The second unit includes a cemented lens having positive optical power, and a joint surface of the cemented lens is an aspheric…",
  "path": "/patents/937572",
  "publishedAt": "2016-09-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60R11/04",
    "PANASONIC IP MAN CO LTD [JP]"
  ],
  "textContent": "A single focal length lens system which, in order from an object side to an image side, includes a first unit, an aperture diaphragm, and a second unit is provided. The second unit includes a cemented lens having positive optical power, and a joint surface of the cemented lens is an aspheric surface. The cemented lens satisfies a condition: |dn/dt1|≤ 2.67× 10(|dn/dt1|: a maximum value of absolute values of relative refractive index temperature coefficients in an atmosphere at 0 to 20°C with respect to light having a wavelength range of 580 to 640 nm, which is calculated for each of lens elements constituting the cemented lens).",
  "title": "SINGLE-FOCUS LENS SYSTEM, CAMERA AND AUTOMOBILE"
}