Narrow viewing angle plastic leaded chip carrier
View Patent ↗The PLCC package enables a narrow viewing angle without requiring a second lens by providing the PLCC package with a reflector cup having multiple stages where the geometry or some other characteristic of one stage is different from the geometry or some other characteristic of another stage.
1. A plastic molded lead frame comprising a reflector cup and a light source mounted in the reflector cup, wherein the reflector cup is configured to reflect light emitted by the light source and reduce a viewing angle of the light source wherein the reflector cup comprises at least a first stage with a first reflective surface having a first reflective surface tilt angle, a second stage with a second reflective surface having a second reflective surface tilt angle different than the first reflective surface tilt angle and a first encapsulant filling the first stage but not within the second stage, and wherein the plastic molded lead frame does not include a convex or external lens within the reflector cup,
wherein the first reflective surface is rough and the second reflective surface is smooth.
2. The plastic molded lead frame of claim 1 , wherein the reflector cup comprises a bottom area where the light source is mounted and a top area where light emitted by the light source exits the reflector cup and wherein the size of the bottom area is less than the size of the top area.
3. The plastic molded lead frame of claim 1 , wherein the reflector cup is at least one of circular, elliptical, and rectangular in shape.
4. The plastic molded lead frame of claim 1 , wherein the reflector cup comprises a first stage and a second stage.
5. The plastic molded lead frame of claim 4 , wherein an encapsulant fills the first stage and not the second stage.
6. The plastic molded lead frame of claim 4 , wherein the geometry of the first stage is different from the geometry of the second stage.