Image capturing module and lens shade thereof

Abstract

An image capturing device includes a casing, a lens component arranged in the casing, and a lens shade disposed directly facing the lens component. The casing includes an opening and the lens component includes a lens. The lens extends out from the casing into the lens shade through the opening of the casing.

What is claimed is: 
     
         1 . An image capturing device comprising:
 a casing including an opening;   a lens component arranged in the casing and including a lens; and   a lens shade disposed directly facing the lens component, the lens shade being configured to couple with the casing via the opening of the casing, and the lens extending out from the casing into the lens shade through the opening of the casing.   
     
     
         2 . The image capturing device of  claim 1 , wherein the lens shade includes:
 a first bottom surface close to the lens and including a first light inlet, the first bottom surface being arranged inside the casing;   a second bottom surface disposed opposite to the first bottom surface and away from the lens, and including a second light inlet; and   a light incoming pathway running through the lens shade to allow external light to enter the lens, the light incoming pathway including the first light inlet and the second light inlet.   
     
     
         3 . The image capturing device of  claim 2 , wherein the lens shade further includes a retaining wall formed on the first bottom surface and being perpendicular to the first bottom, a shape and a size of a space surrounded by the retaining wall matching a shape and a size of the lens, respectively, and the retaining wall being configured to limit a position of the lens. 
     
     
         4 . The image capturing device of  claim 3 , wherein the lens extends out from the casing into the lens shade through an open space surrounded by the retaining wall. 
     
     
         5 . The image capturing device of  claim 2 , wherein:
 the second light inlet has a rectangular or a circular shape; or   the first light inlet has a circular or a race-track shape.   
     
     
         6 . The image capturing device of  claim 2 , wherein a sidewall of the light incoming pathway includes a slant surface. 
     
     
         7 . The image capturing device of  claim 2 , wherein the second light inlet has a rectangular shape, and a sidewall of the light incoming pathway includes four slant surfaces extending from four lateral sides of the second light inlet towards the first light inlet. 
     
     
         8 . The image capturing device of  claim 2 , wherein:
 the lens shade includes a lens shade body and a bottom cover connected to a side of the lens shade body close to the lens;   the light incoming pathway runs through the lens shade body and the bottom cover;   the first bottom surface includes a surface on one end of the bottom cover that faces the lens;   the lens shade body includes a first end and a second end, the first end being opposite to the second end and being further away from the lens than the second end; and   the second bottom surface includes a surface on the first end of the lens shade body.   
     
     
         9 . The image capturing device of  claim 8 , wherein:
 the lens shade forms a hollow casing;   a surface on the second end of the lens shade body includes an opening hole; and   a size of the opening hole is greater than a size of the second light inlet.   
     
     
         10 . The image capturing device of  claim 9 , wherein:
 a shape and a size of the bottom cover match a shape and a size of the opening hole, respectively;   the lens shade body includes a first positioning portion and a first fastening portion formed at the opening hole;   the bottom cover includes a second positioning portion matching the first positioning portion and a second fastening portion matching the first fastening portion; and   the first positioning portion and the second positioning portion are configured to match each other to position the bottom cover, and the first fastening portion and the second fastening portion are configured to match each other to connect the bottom cover to the lens shade body.   
     
     
         11 . The image capturing device of  claim 10 , wherein the first fastening portion includes an elastic arm protruding from a portion on a sidewall of the lens shade body close to the opening hole, and the second fastening portion includes a snap slot or a stepped surface formed on an outer sidewall of the bottom cover and matching the elastic arm. 
     
     
         12 . The image capturing device of  claim 10 , wherein the first positioning portion includes a notch disposed at the opening hole, and the second positioning portion includes a protruding portion protruding from an outer sidewall of the bottom cover and matching the notch. 
     
     
         13 . The image capturing device of  claim 8 , wherein:
 the lens shade body includes a first fastening portion;   the bottom cover includes a second fastening portion matching the first fastening portion; and   the first fastening portion and the second fastening portion are configured to match each other to connect the bottom cover to the lens shade body.   
     
     
         14 . The image capturing device of  claim 13 , wherein the first fastening portion includes an elastic arm protruding from a sidewall of the lens shade body, and the second fastening portion includes a snap slot or a stepped surface formed on an outer sidewall of the bottom cover and matching the elastic arm. 
     
     
         15 . The image capturing device of  claim 13 , wherein:
 the lens shade body includes a first positioning portion;   the bottom cover includes a second positioning portion matching the first positioning portion; and   the first positioning portion and the second positioning portion are configured to match each other to position the bottom cover.   
     
     
         16 . The image capturing device of  claim 15 , wherein the first positioning portion includes a notch formed on the lens shade body, and the second positioning portion includes a protruding portion protruding from an outer sidewall of the bottom cover and matching the notch. 
     
     
         17 . The image capturing device of  claim 1 , further comprising:
 a filter component connected at a side of the lens shade opposite to the lens.   
     
     
         18 . The image capturing device of  claim 17 , wherein:
 the lens shade includes a first connecting portion; and   the filter component includes:   a filter; and   a filter ring including a second connecting portion matching the first connecting portion, the filter ring being configured to be connected to the first connecting portion to mount the filter component to the lens shade.   
     
     
         19 . The image capturing device of  claim 1 , wherein a thickness of the lens in a direction along an optical axis of the lens is larger than a thickness of a wall of the casing. 
     
     
         20 . An image capturing device comprising:
 a casing including an opening;   a lens component arranged in the casing and including a lens;   a lens shade disposed directly facing the lens component and received in the opening of the casing; and   a filter arranged at a side of the lens shade opposite to the lens.