Lens module and electronic device for improving an image quality of the lens module

An electronic device, comprising:

• a housing;
• a lens module disposed in the housing, wherein:
• the lens module defines a central axis, an X axis, a Y axis, an object side and an image side, wherein the central axis, the X axis and the Y axis are perpendicular to each other, the image side is opposite to the object side, and the lens module comprises:
• a lens barrel;
• an optical lens assembly disposed in the lens barrel, wherein the optical lens assembly includes at least one lens;
• a light shielding sheet disposed in the lens barrel and located on an object-side surface of the lens;
• and
• an optical sensor disposed in the lens barrel and located on an image plane;
• wherein the light shielding sheet includes an annular body having an outer periphery and an inner periphery, the outer periphery surrounds the inner periphery, and an opening is formed around the inner periphery;
• the outer periphery includes first and second cut edges, which are respectively contracted toward a center of the light shielding sheet along the Y-axis, and the inner periphery includes third and fourth cut edges, which are respectively contracted toward the center of the light shielding sheet along the Y-axis;
• and
• the distance between the first and second cut edges is D2, the distance between the third and fourth cut edges is D1, and the following conditions are satisfied:
• 0.05≤D1/D2≤0.95;
• and
• a control component disposed in the housing and electrically connected to the optical sensor.