Lens module and component for lens module

Patent metadata

Field	Value
Publication number	US-12566308-B2
Application number	US-202217865665-A
Country	US
Kind code	B2
Filing date	Jul 15, 2022
Priority date	May 10, 2022
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

A component for a lens module is selected from a group consisting of a lens barrel, an optical lens, a pressure ring, and a spacer ring. The component includes: a component surface, a flat region located on the component surface, and a microstructure region located on the component surface and adjacent to the flat region. Relative to the flat region, the microstructure region includes a plurality of convex portions and a plurality of concave portions. The convex portions are in a shape of a cone. Any area of 0.1 mm*0.1 mm in the microstructure region has n convex portions, where n≤50.

First claim

What is claimed is:

1 . A component for a lens module, selected from a group consisting of a lens barrel, an optical lens, a pressure ring, and a spacer ring, the component comprising:
a component surface; a flat region located on the component surface; and a microstructure region located on the component surface and adjacent to the flat region, wherein: relative to the flat region, the microstructure region comprises a plurality of convex portions and a plurality of concave portions; the convex portions are in a shape of a cone; and any area of 0.1 mm*0.1 mm in the microstructure region has n convex portions, wherein n≤50; wherein the convex portions each have a top portion, a distance D exists between every two adjacent top portions, wherein 14 μm≤D≤40 μm.

2 . The component for a lens module according to claim 1 , wherein the convex portions have a height H 1 relative to the flat region, wherein H 1 ≥4 μm.

3 . The component for a lens module according to claim 2 , wherein the concave portions have a depth H 2 relative to the flat region, wherein H 2 ≥3 μm.

4 . The component for a lens module according to claim 3 , wherein H 1 +H 2 ≥10 μm.

5 . The component for a lens module according to claim 2 , wherein 0.1≤H 1 /D≤3.5.

6 . The component for a lens module according to claim 1 , wherein a surface roughness Ra 0 is defined for the flat region, wherein Ra 0 <1 μm.

7 . The component for a lens module according to claim 1 , wherein surfaces of the convex portions and surfaces of the concave portions are provided with a nano-sized granular rough surface.

8 . The component for a lens module according to claim 7 , wherein the microstructure region comprising the convex portions and the concave portions has a first surface roughness Ra 1 , and the convex portions and the concave portions comprising the granular rough surface have a second surface roughness Ra 2 , wherein Ra 2 <Ra 1 .

9 . The component for a lens module according to claim 1 , wherein the convex portions are in a shape of a circular cone or a polygonal cone.

10 . The component for a lens module according to claim 1 , wherein the convex portions in the shape of a cone are arranged in a staggered manner.

11 . The component for a lens module according to claim 1 , wherein the area of 0.1 mm*0.1 mm in the microstructure region on the component surface has n convex portions, wherein 15≤n≤30.

12 . A lens module, comprising:
a lens barrel; an optical lens assembly disposed in the lens barrel and comprising a plurality of optical lenses; a pressure ring disposed in the lens barrel and abutting against the optical lens assembly; and a spacer ring disposed in the lens barrel and located in the optical lens assembly; wherein a component for the lens module is at least one component selected from a group consisting of the lens barrel, the optical lenses, the pressure ring, and the component comprising: a component surface; a flat region located on the component surface; and a microstructure region located on the component surface and adjacent to the flat region, wherein: relative to the flat region, the microstructure region comprises a plurality of convex portions and a plurality of concave portions; the convex portions are in a shape of a cone; and any area of 0.1 mm*0.1 mm in the microstructure region has n convex portions, wherein n≤50; wherein the convex portions each have a top portion, a distance D exists between every two adjacent top portions, wherein 14 μm≤D≤40 μm.

13 . The lens module according to claim 12 , wherein when the component for the lens module is the lens barrel, the microstructure region is located on at least one of an object-side surface, an image-side surface, and an inner annular surface of the component surface.

14 . The lens module according to claim 12 , wherein when the component for the lens module is the optical lens, the microstructure region is located on a non-optical region of the component surface and is not in contact with other components for the lens module.

15 . The lens module according to claim 12 , wherein when the component for the lens module is the pressure ring, the microstructure region is located on an inner ring surface of the component surface.

16 . The lens module according to claim 12 , wherein when the component for the lens module is the spacer ring, the microstructure region is located on an inner ring surface of the component surface.

17 . The lens module according to claim 12 , wherein the convex portions have a height H 1 relative to the flat region, wherein H 1 ≥4 μm.

18 . The lens module according to claim 17 , wherein 0.1≤H 1 /D≤3.5.

Assignees

• Newmax Technology Co Ltd

Inventors

• Liu Szu-Ying
• Shih Wei-Lan
• Su Jen-Chieh

Classifications

• G02B5/003

  Light absorbing elements · CPC title

• G02B7/021 Primary

  for more than one lens · CPC title

• G02B5/26

  Reflecting filters (G02B5/28 takes precedence) · CPC title

• G02B7/026 Primary

  using retaining rings or springs (G02B7/027 takes precedence) · CPC title

• G02B3/00

  Simple or compound lenses · CPC title