Patent ID: 11867887
Assignee: LARGAN PRECISION CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. A light-folding element for a camera module, the light-folding element comprising:
an object-side surface, wherein an imaging light travelling into the camera module enters the object-side surface;
an image-side surface, wherein the imaging light exits through the image-side surface;
at least one reflection surface, configured to reflect the imaging light passing through the object-side surface and send the imaging light to the image-side surface; and
at least one connection surface, connected to the object-side surface, the image-side surface and the at least one reflection surface;
wherein the light-folding element has at least one recessed structure located at the at least one connection surface, the at least one recessed structure is recessed from the at least one connection surface towards an interior of the light-folding element, and the at least one recessed structure comprises a top end portion, a bottom end portion and a tapered portion at the at least one connection surface;
wherein the top end portion is located at an edge of the at least one connection surface, the bottom end portion is located opposite to the top end portion, the tapered portion is connected to and located between the top end portion and the bottom end portion, the tapered portion has two tapered edges located on the at least one connection surface, the two tapered edges are connected to the top end portion and the bottom end portion, and a width of the tapered portion decreases in a direction from the top end portion towards the bottom end portion;
wherein the at least one connection surface includes two connection surfaces, the two connection surfaces are disposed opposite to each other, the at least one recessed structure includes a plurality of recessed structures, two of the plurality of recessed structures are located on a single surface of the two connection surfaces and disposed opposite to each other, one of the two of the plurality of recessed structures located on the single surface of the two connection surfaces is located closer to an object side of the light-folding element, other of the two of the plurality of recessed structures located on the single surface of the two connection surfaces is located closer to an image side of the light-folding element, and the two top end portions of the two of the plurality of recessed structures located on the single surface of the two connection surfaces are respectively located at two opposite edges of the single surface of the two connection surfaces.