Optical lens assembly, device, and image forming method
AssigneeSamsung Electronics Co., Ltd.
InventorsByung-kwon Kang, Liefeng Zhao
Life of this patent
Estimating the term…
Abstract
Provided are an optical lens assembly and an electronic device including the optical lens assembly. The optical lens assembly includes a front group closest to an object side and including a first lens having a positive refractive power and an image side surface that is concave, and a second lens having a negative refractive power, a third lens having a negative refractive power, and a fourth lens having a positive refractive power. Other embodiments may be provided.
Claims16
An optical lens assembly comprising, from an object side to an image side:
- a first lens having a positive refractive power;
- a second lens immediately adjacent to the first lens, having a negative refractive power;
- a third lens immediately adjacent to the second lens, having a negative refractive power;
- and
- a fourth lens immediately adjacent to the third lens, having a positive refractive power,
- wherein the fourth lens is a closest lens to an image plane, and
- wherein the optical lens assembly satisfies the following condition:
- 0≤YL/YM<0.4
- 28<FOV<60 (Degrees), <Condition>
- where YL denotes a distance from an optical axis to a maximum sag in an image side surface of the fourth lens, YM denotes ½ of an effective diameter of the image side surface of the fourth lens, and FOV denotes a viewing angle.
An optical lens assembly comprising, from an object side to an image side:
- a first lens having a positive refractive power;
- a second lens immediately adjacent to the first lens, having a negative refractive power;
- a third lens immediately adjacent to the second lens, having a negative refractive power;
- and
- a fourth lens immediately adjacent to the third lens, having a positive refractive power,
- wherein the fourth lens is a closest lens to and
- wherein the optical lens assembly has a viewing angle that is greater than 35° and less than 49°.
An electronic device comprising:
- an optical lens assembly;
- and
- an image sensor configured to receive light focused by the optical lens assembly,
- wherein the optical lens assembly consists of, from an object side to an image side:
- a first lens having a positive refractive power;
- a second lens having a negative refractive power;
- a third lens immediately adjacent to the second lens, having a negative refractive power;
- and
- a fourth lens having a positive refractive power, wherein the optical lens assembly satisfies the following condition:
- 0≤YL/YM<0.4
- 28<FOV<60 (Degrees), <Condition>
- where YL denotes a distance from an optical axis to a maximum sag in an image side surface of the fourth lens, YM denotes ½ of an effective diameter of the image side surface of the fourth lens, and FOV denotes a viewing angle.
Dependencies are inferred from the claim text.