Substrate for optical device and optical device package having the same
AssigneePoint Engineering Co., Ltd.
InventorsBum Mo AHN, Seung Ho PARK, Tae Hwan SONG
Life of this patent
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Abstract
Disclosed is a substrate for an optical device. The substrate has a cavity for mounting an optical element. The cavity has a sloped wall surface having a surface roughness Ra controlled to fall within a range of 1 nm≤Ra≤100 nm, thereby increasing the surface reflectance inside the cavity in which the optical element is mounted and thus minimizing the loss of light emitted from the optical element. Further disclosed is an optical device package including the same substrate.
Claims6
An optical device substrate comprising:
- first and second metal members;
- a vertical insulating layer disposed between the first metal member and the second metal member in a transverse direction to electrically insulate the first metal member and the second metal member from each other;
- and
- an optical element cavity,
- wherein a sloped wall surface defining the optical element cavity has a surface roughness Ra within a range of 1 nm≤Ra≤100 nm.
An optical device substrate comprising:
- first and second metal members;
- a vertical insulating layer disposed between the first metal member and the second metal member in a transverse direction to electrically insulate the first metal member and the second metal member from each other;
- and
- an optical element cavity,
- wherein an insulating layer and a metal reflective layer are formed on a sloped wall surface defining the optical element cavity.
An optical device substrate comprising:
- first and second metal members;
- a vertical insulating layer disposed between the first metal member and the second metal member in a transverse direction to electrically insulate the first metal member and the second metal member from each other;
- and
- an optical element cavity,
- wherein a sloped wall surface defining the optical element cavity includes an upper sloped portion having a rectangular transverse cross section corresponding to a rectangular opening and a lower sloped portion having a circular transverse cross section corresponding to a circular opening.
An optical device package comprising:
- an optical device substrate including first and second metal members, a vertical insulating layer disposed between the first metal member and the second metal member in a transverse direction to electrically insulate the first metal member and the second metal member from each other, and an optical element cavity;
- a light-emitting element mounted inside the optical element cavity;
- and
- a light transmitting member configured to cover the optical element cavity, and
- wherein a sloped wall surface defining the optical element cavity has a surface roughness Ra within a range of 1 nm≤Ra≤100 nm.
Dependencies are inferred from the claim text.