Optical device for reducing disturbance light and manufacturing method thereof
View Patent ↗An optical element mounted on a wiring board is sealed by a sealing resin except an optical function region. Wires connecting the wiring board with the optical element are also sealed by the sealing resin. The optical function region is exposed as a bottom surface of a recess whose side surface is formed by the sealing resin. A boundary portion between the side surface of the recess and a top surface portion and a boundary portion between the side surface and bottom surface of the recess have a rounded shape.
1. An optical device, comprising:
an optical element having an optical function region on one surface;
a wiring board having the optical element mounted thereon and electrically connected to the optical element;
a sealing resin for sealing at least an electrically connected portion of the optical element and the wiring board; and
a recess in which at least the optical function region serves as a bottom surface and a side surface is formed by the sealing resin, wherein
a boundary portion between the side surface and a top surface portion surrounding the recess has a convex, rounded shape, and
a boundary portion between the side surface and the bottom surface has a concave, rounded shape.
2. The optical device according to claim 1 , wherein the side surface of the recess is a concave surface.
3. The optical device according to claim 1 , wherein the recess has a tapered shape having a larger opening area at a top.
4. An optical device, comprising:
an optical element having an optical function region on one surface;
a wiring board having the optical element mounted thereon and electrically connected to the optical element;
a sealing resin for sealing at least an electrically connected portion of the optical element and the wiring board; and
a recess in which at least the optical function region serves as a bottom surface and a side surface is formed by the sealing resin, wherein
a boundary portion between the side surface and a top surface portion surrounding the recess has a convex, rounded shape,
a boundary portion between the side surface and the bottom surface has a concave, rounded shape, and
a recessed portion is provided in a center of the one surface of the optical element and a recessed-portion peripheral surface portion is provided around the recessed portion, the optical function region is provided at a bottom of the recessed portion, and a boundary portion between the side surface and the bottom surface of the recess is present on the recessed-portion peripheral surface portion.
5. An optical device, comprising:
an optical element having an optical function region on one surface;
a wiring board having the optical element mounted thereon and electrically connected to the optical element;
a sealing resin for sealing at least an electrically connected portion of the optical element and the wiring board; and
a recess in which at least the optical function region serves as a bottom surface and a side surface is formed by the sealing resin, wherein
a boundary portion between the side surface and a top surface portion surrounding the recess has a convex, rounded shape,
a boundary portion between the side surface and the bottom surface has a concave, rounded shape, and
a protruding portion is provided in a center of the one surface of the optical element and a protruding-portion peripheral surface portion is provided around the protruding portion, the optical function region is provided at a top surface of the protruding portion, and a boundary portion between the side surface and the bottom surface of the recess is present on the protruding-portion peripheral surface portion.