Semiconductor light emitting device including a fluorescent material

A semiconductor light emitting element comprising:

• a light emitting layer for emitting primary light having a first wavelength;
• a wavelength converter located in the light extraction side of said light emitting layer to absorb said primary light emitted from said light emitting layer and to emit secondary light having a second wavelength different from said first wavelength;
• a second optical reflector located on one side of said light emitting layer opposite from the light extraction side to reflect said primary light;
• and
• a first optical reflector located in the light extraction side of said wavelength converter, and having a low reflectance to said secondary light emitted from said wavelength converter and a high reflectance to said primary light emitted from said light emitting layer.

A semiconductor light emitting element comprising:

• a light emitting layer for emitting primary light having a first wavelength;
• a wavelength converter located in the light extraction side of said light emitting layer to absorb said primary light emitted from said light emitting layer and to emit secondary light having a second wavelength different from said first wavelength;
• a third optical reflector configured to enclose said light emitting layer except the light extraction part to reflect said primary light emitted from said light emitting layer;
• and
• a first optical reflector located in the light extraction side of said wavelength converter, and having a low reflectance to said secondary light emitted from said wavelength converter and a high reflectance to said primary light emitted from said light emitting layer.

A semiconductor light emitting element comprising:

• a light emitting layer for emitting primary light having a first wavelength;
• a wavelength converter located in the light extraction side of said light emitting layer to absorb said primary light emitted from said light emitting layer and to emit secondary light having a second wavelength different from said first wavelength;
• and
• a fourth optical reflector located between said light emitting layer and said wavelength converter, and having a low reflectance to said primary light and a high reflectance to said secondary light.

A semiconductor light emitting device comprising:

• a packaging member;
• a semiconductor light emitting element packaged on said packaging member to emit primary fight having a first wavelength;
• a wavelength converter located in the light extraction side of said light emitting element to absorb said primary light emitted from said light emitting element and to emit secondary light having a second wavelength different from said first wavelength;
• and
• a first optical reflector located in the light extraction side of said wavelength converter, and having a low reflectance to said secondary light emitted from said wavelength converter and a high reflectance to said primary light emitted from said light emitting element.

A semiconductor light emitting device comprising:

• a packaging member;
• a semiconductor light emitting element packaged on said packaging member to emit primary light having a first wavelength;
• a wavelength converter located in the light extraction side of said light emitting element to absorb said primary light emitted from said light emitting element and to emit secondary light having a second wavelength different from said first wavelength;
• a second optical reflector located on one side of said light emitting element opposite from the light extraction side to reflect said primary light;
• and
• a first optical reflector located in the light extraction side of said wavelength converter, and having a low reflectance to said secondary light emitted from said wavelength converter and a high reflectance to said primary light emitted from said light emitting element.

A semiconductor light emitting device comprising:

• a packaging member;
• a semiconductor light emitting element packaged on said packaging member to emit primary light having a first wavelength;
• a wavelength converter located in the light extraction side of said light emitting element to absorb said primary light emitted from said light emitting element and to emit secondary light having a second wavelength different from said first wavelength;
• a third optical reflector configured to enclose said light emitting element except the light extraction part to reflect said primary light emitted from said light emitting element;
• and
• a first optical reflector located in the light extraction side of said wavelength converter, and having a low reflectance to said secondary light emitted from said wavelength converter and a high reflectance to said primary light emitted from said light emitting element.

A semiconductor light emitting device comprising:

• a packaging member;
• a semiconductor light emitting element packaged on said packaging member to emit primary light having a first wavelength;
• a wavelength converter located in the light extraction side of said light emitting element to absorb said primary light emitted from said light emitting element and to emit secondary light having a second wavelength different from said first wavelength;
• and
• a fourth optical reflector located between said light emitting element and said wavelength converter, and having a low reflectance to said primary light and a high reflectance to said secondary light.