Camera lens assembly
AssigneeZhejiang Sunny Optical Co., Ltd
InventorXinquan WANG
Life of this patent
Estimating the term…
Abstract
The present disclosure discloses a camera lens assembly. The camera lens assembly includes, sequentially along an optical axis from an object side to an image side, a first lens, a second lens, a third lens, and a fourth lens. An object-side surface of the first lens and an object-side surface of the second lens are convex surfaces. An image-side surface of the third lens is a convex surface. An image-side surface of the fourth lens is a concave surface. Each of the first lens and the third lens has a positive refractive power. Each of the second lens and the fourth lens has a positive refractive power or a negative refractive power. A total effective focal length f of the camera lens assembly and an entrance pupil diameter EPD of the camera lens assembly satisfy: f/EPD<1.5.
Claims20
A camera lens assembly comprising, along an optical axis from an object side to an image side, a first lens, a second lens, a third lens, and a fourth lens in sequence,
- wherein an object-side surface of the first lens and an object-side surface of the second lens are convex surfaces;
- an image-side surface of the third lens is a convex surface;
- an image-side surface of the fourth lens is a concave surface;
- each of the first lens and the third lens has a positive refractive power;
- each of the second lens and the fourth lens has a positive refractive power or a negative refractive power;
- and
- a total effective focal length f of the camera lens assembly and an entrance pupil diameter EPD of the camera lens assembly satisfy:
- f/EPD<1.5.
A camera lens assembly comprising, along an optical axis from an object side to an image side, a first lens, a second lens, a third lens, and a fourth lens in sequence,
- wherein an object-side surface of the first lens is a convex surface;
- at least one of an object-side surface of the third lens or an image-side surface of the third lens is a convex surface;
- at least one of an object-side surface of the fourth lens or an image-side surface of the fourth lens is a concave surface;
- at least two of the first lens, the third lens, and the fourth lens have positive refractive powers;
- and
- the second lens has a positive refractive power, and an effective focal length f2 of the second lens and a total effective focal length f of the camera lens assembly satisfy:
- 2<f2/f<8.
Dependencies are inferred from the claim text.