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US 11,019,240 B2Granted
Fixing ring, lens module, and electronic device including the same
AssigneeHon Hai Precision Industry Co., Ltd.
InventorsYa-Lan Feng, Chun-Cheng Ko
Life of this patent
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Abstract
A fixing ring of a certain design for a lens module substantially reduces stray light. The fixing ring defines a central axis, and comprises a base surface and a processing surface, formed from an edge of the base surface. A first angle θ1 exists between a first side cut surface and a surface perpendicular to the central axis, a distance L1 and the first angle θ1 satisfy formulas 0.015 mm<L1<0.025 mm and 20°<θ1<40°. The disclosure further provides a lens module and an electronic device comprising the fixing ring. An anti-dazzle film, matching with the fixing ring to completely absorb stray light, is included in the lens module.
Claims17
A fixing ring defining a central axis, and comprising
- a base surface;
- a processing surface, formed by extending a distance L1 along a direction parallel to the central axis from an edge of the base surface;
- and
- a first side cut surface, comprising a bottom coupled to the base surface via the processing surface;
- wherein a first angle θ1 is defined between the first side cut surface and a surface perpendicular to the central axis, the distance L1 and the first angle θ1 satisfy the formulas 0.015 mm<L1<0.025 mm, and 20°<θ1<40°;
- the fixing ring further comprises a second side cut surface, a first connecting plane, a top surface, and a second connecting surface, wherein the base surface, the processing surface, the first side cut surface, the second side cut surface, the first connecting plane, the top surface, and the second connecting surface are successively connected to form the fixing ring, the second side cut surface and the first connecting plane are located on the inner side of the fixing ring, the second connecting surface is located on the outer side of the fixing ring;
- a second angle θ2 is defined between the second side cut surface and the base surface, the first angle θ1 and the second angle θ2 satisfy the formulas θ1<θ2;
- the first angle θ1 is 24°, the second angle θ2 is 52°, and the distance L1 is 0.018 mm.
5 more elements
A lens module comprising:
- a lens barrel;
- a lens assembly received in the lens barrel;
- a filter located outside of the lens barrel;
- an image senor located adjacent to a side of the filter away from the lens barrel;
- an anti-dazzle film arranged on a side of the image sensor towards the filter, and configured for enclosing a sensing area;
- and
- a fixing ring fixed in the lens barrel to support the lens assembly and located between the lens assembly and the filter, the fixing ring defining a central axis, and comprising
- a base surface;
- a processing surface, formed by extending a distance L1 along a direction parallel to the central axis from an edge of the base surface;
- a first side cut surface, comprising a bottom coupled to the base surface via the processing surface;
- and
- a second side cut surface coupled to the first side cut surface,
- wherein a first angle θ1 is defined between the first side cut surface and a surface perpendicular to the central axis, and a second angle θ2 is defined between the second side cut surface and a surface perpendicular to the central axis, the first angle θ1, the second angle θ2, and the distance L1 satisfy predetermined formulas to make incident light form from the lens assembly be reflected to the fixing ring by the filter, and to make reflected light reflected by the fixing ring enter the anti-dazzle film.
10 more elements
An electronic device comprising a lens module, the lens module comprising:
- a lens barrel;
- a lens assembly received in the lens barrel;
- a filter located outside of the lens barrel;
- an image senor located adjacent to a side of the filter away from the lens barrel;
- an anti-dazzle film arranged on a side of the image sensor towards the filter, and configured for enclosing a sensing area;
- and
- a fixing ring fixed in the lens barrel to support the lens assembly and located between the lens assembly and the filter, the fixing ring defining a central axis, and comprising
- a base surface;
- a processing surface, formed by extending a distance L1 along a direction parallel to the central axis from an edge of the base surface;
- a first side cut surface, comprising a bottom coupled to the base surface via the processing surface;
- and
- a second side cut surface coupled to the first side cut surface,
- wherein a first angle θ1 is defined between the first side cut surface and a surface perpendicular to the central axis, and a second angle θ2 is defined between the second side cut surface and a surface perpendicular to the central axis, the first angle θ1, the second angle θ2, and the distance L1 satisfy predetermined formulas to make incident light form from the lens assembly be reflected to the fixing ring by the filter, and to make reflected light reflected by the fixing ring enter the anti-dazzle film.
10 more elements
Dependencies are inferred from the claim text.