In-vehicle camera lens unit
AssigneeNidec Sankyo Corporation
InventorYosuke Kanzaki
Life of this patent
Estimating the term…
Abstract
An in-vehicle camera lens unit having stable temperature characteristics even when lenses are mounted in a resin holder is provided. With an in-vehicle camera lens unit, a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens, and a sixth lens, which are disposed in this order from an object side to an image side, are held in a resin holder. The first lens 1, the second lens, the fifth lens, and the sixth lens are glass lenses, and of the third lens and the fourth lens disposed on both sides of the diaphragm, the third lens, which is a meniscus lens, is a plastic lens, and the fourth lens, which is a double convex lens, is a glass lens.
Claims7
An in-vehicle camera lens unit, comprising:
- a first lens;
- a second lens;
- a third lens;
- a diaphragm;
- a fourth lens;
- a fifth lens;
- and
- a sixth lens,
- wherein the first lens, the second lens, the third lens, the diaphragm, the fourth lens, the fifth lens, and the sixth lens being disposed in such an order from an object side to an image side while being held in a holder with a cylindrical shape,
- wherein
- the first lens is a positive lens with a meniscus shape having a convex surface facing the object side and having a concave surface facing the image side,
- the second lens is a negative lens with a meniscus shape having a convex surface facing the object side and having a concave surface facing the image side,
- the third lens is a negative lens with a meniscus shape having a concave surface facing the object side and having a convex surface facing the image side,
- the fourth lens is a positive lens with convex surfaces facing the object side and the image side,
- the fifth lens is a negative lens with concave surfaces facing the object side and the image side,
- the sixth lens is a positive lens with convex surfaces facing the object side and the image side,
- the fifth lens and the sixth lens are a cemented lens,
- the holder is made of resin,
- the first lens, the second lens, the fourth lens, the fifth lens, and the sixth lens are glass lenses, and
- the third lens is a plastic lens.
Dependencies are inferred from the claim text.