Optical lens, lens module having optical lens, and electronic device

Patent metadata

Field	Value
Publication number	US-2022043231-A1
Application number	US-202017135314-A
Country	US
Kind code	A1
Filing date	Dec 28, 2020
Priority date	Aug 6, 2020
Publication date	Feb 10, 2022
Grant date	—

Abstract

An optical lens includes a first transparent portion and a first flange portion arranged around the first transparent portion. The first transparent portion and the first flange portion are symmetrical about an optical axis of the optical lens. The first flange portion includes a connecting portion and a peripheral portion. The connecting portion is coupled between the first transparent portion and the peripheral portion. An object side of the first transparent portion includes a first transparent surface. The connecting portion includes a connecting surface coupled to the first transparent surface. The connecting surface is a textured surface.

First claim

What is claimed is:

1 . An optical lens comprising:
a first transparent portion; and a first flange portion arranged around the first transparent portion; wherein: the first transparent portion and the first flange portion are symmetrical about an optical axis of the optical lens; the first flange portion comprises a connecting portion and a peripheral portion; the connecting portion is coupled between the first transparent portion and the peripheral portion; an object side of the first transparent portion comprises a first transparent surface; the connecting portion comprises a connecting surface coupled to the first transparent surface; and the connecting surface is a textured surface.

2 . The optical lens of claim 1 , wherein:
a surface angle of the connecting surface is greater than 10°.

3 . A lens module comprising:
a lens barrel; and a plurality of lenses housed and fixed in the lens barrel, at least one of the plurality of lenses being an optical lens comprising a first transparent portion and a flange portion arranged around the transparent portion, wherein: the first transparent portion and the first flange portion are symmetrical about an optical axis of the optical lens; the first flange portion comprises a connecting portion and a peripheral portion; the connecting portion is coupled between the first transparent portion and the peripheral portion; an object side of the first transparent portion comprises a first transparent surface; the connecting portion comprises a connecting surface coupled to the first transparent surface; the connecting surface is a textured surface; and the optical lens is located closest to an image side among the plurality of lenses.

4 . The lens module of claim 3 , wherein:
the plurality of lenses comprises the optical lens, a second lens, and a third lens sequentially housed and fixed in the lens barrel from the image side to the object side.

5 . The lens module of claim 4 , further comprising a first light shield, wherein:
the first light shield is located between the first lens and the second lens.

6 . The lens module of claim 5 , wherein:
the first light shield comprises a main body and defines a hole surrounded by the main body; and the hole faces the first transparent portion.

7 . The lens module of claim 6 , wherein:
the second lens comprises a second transparent portion facing the first transparent portion; the second transparent portion comprises a second transparent surface facing the first transparent surface; a width of the connecting surface is greater than Wp, and Wp satisfies the following relationship: Wp=2×(h s ×tanθ+Rs−RL 3 ); θ is a half-field angle; Rs is a radius of the hole of the first light shield; RL 3 is a radius of the first transparent portion; and h s is a distance between the first transparent surface and the second transparent surface along the optical axis.

8 . The lens module of claim 5 , further comprising a second light shield, wherein:
the second light shield is located between the second lens and the third lens.

9 . The lens module of claim 8 , wherein:
the lens barrel defines a receiving cavity and a light entrance; the light entrance communicates with the receiving cavity; the optical lens, the first light shield, the second lens, the second light shield, and the third lens are sequentially housed and fixed in the housing cavity from the image side to the object side; and the third lens is adjacent to the light entrance.

10 . An electronic device comprising:
a body; and a lens module comprising: a lens barrel; and a plurality of lenses housed and fixed in the lens barrel, at least one of the plurality of lenses being an optical lens comprising a first transparent portion and a flange portion arranged around the transparent portion, wherein: the first transparent portion and the first flange portion are symmetrical about an optical axis of the optical lens; the first flange portion comprises a connecting portion and a peripheral portion; the connecting portion is coupled between the first transparent portion and the peripheral portion; an object side of the first transparent portion comprises a first transparent surface; the connecting portion comprises a connecting surface coupled to the first transparent surface; the connecting surface is a textured surface; and the optical lens is located closest to an image side among the plurality of lenses.

11 . The electronic device of claim 10 , wherein:
the plurality of lenses comprises the optical lens, a second lens, and a third lens sequentially housed and fixed in the lens barrel from the image side to the object side.

12 . The electronic device of claim 11 , further comprising a first light shield, wherein:
the first light shield is located between the first lens and the second lens.

13 . The electronic device of claim 12 , wherein:
the first light shield comprises a main body and defines a hole surrounded by the main body; and the hole faces the first transparent portion.

14 . The electronic device of claim 13 , wherein:
the second lens comprises a second transparent portion facing the first transparent portion; the second transparent portion comprises a second transparent surface facing the first transparent surface; a width of the connecting surface is greater than Wp, and Wp satisfies the following relationship: Wp=2×(h s ×tanθ+Rs−RL 3 ); θ is a half-field angle; Rs is a radius of the hole of the first light shield; RL 3 is a radius of the first transparent portion; and h s is a distance between the first transparent surface and the second transparent surface along the optical axis.

15 . The electronic device of claim 14 , further comprising a second light shield, wherein:
the second light shield is located between the second lens and the third lens.

16 . The electronic device of claim 15 , wherein:
the lens barrel defines a receiving cavity and a light entrance; the light entrance communicates with the receiving cavity; the optical lens, the first light shield, the second lens, the second light shield, and the third lens are sequentially housed and fixed in the housing cavity from the image side to the object side; and the third lens is adjacent to the light entrance.

Assignees

• Hon Hai Prec Ind Co Ltd

Inventors

• Chen Po-Chou
• Ko Chun-Cheng

Classifications

• G02B13/0035

  having three lenses · CPC title

• G02B27/0018

  with means for preventing ghost images (anti-reflection coatings G02B1/11) · CPC title

• G02B7/021 Primary

  for more than one lens · CPC title

• G02B13/00

  Optical objectives specially designed for the purposes specified below (with variable magnification {in general} G02B15/00) · CPC title

• G02B7/02

  for lenses {(supports for magnifying lenses G02B25/002)} · CPC title