US 2018/0321468 A1 · Lens Assembly

Abstract

A lens assembly includes a first lens, a second lens, a third lens, and a fourth lens, wherein the first lens, the second lens, the third lens, and the fourth lens are arranged in order from an object side to an image side along an optical axis. The first lens is with positive refractive power and includes a convex surface facing the object side. The second lens is with negative refractive power and includes a concave surface facing the image side. The third lens is with refractive power and includes a convex surface facing the image side. The fourth lens is with refractive power. The lens assembly satisfies: FOV≤56°, wherein FOV is a field of view of the lens assembly.

Claims20

Dependent claims

A lens assembly comprising:

a first lens which is with positive refractive power and comprises a convex surface facing an object side;
a second lens which is with negative refractive power and comprises a concave surface facing an image side;
a third lens which is with refractive power and comprises a convex surface facing the image side;
and
a fourth lens which is with refractive power;
wherein the first lens, the second lens, the third lens, and the fourth lens are arranged in order from the object side to the image side along an optical axis;
wherein the lens assembly satisfies:
FOV≤56°,
wherein FOV is a field of view of the lens assembly.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/859,842Filed 2 Jan 2018

Priority

CN 201710303279.43 May 2017

Published

8 Nov 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

G02B 13/004
Having at least one aspherical surface: having four lenses
G02B 9/38
Arranged + -- +: both - components being meniscus
G02B 9/50
Arranged + -- +: both + components being meniscus
G02B 9/62
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -: having six…

Lens Assembly

Life of this patent

Lens Assembly

Life of this patent

Abstract

Claims20