Laser projection module
A laser projection module, that may include a laser projection module cover comprising a top portion, a bottom portion and a one or more of side portions to define a cavity within the cover, wherein the top portion is configured to couple an optical lens. A lead frame may be at least partially integrated into the bottom cover portion of the laser projection module, where the lead frame includes an outer lead frame portion and an inner lead frame portion relative to the cover, wherein the inner lead frame portion is configured to couple a laser diode assembly in one area of the inner lead frame portion within the cavity.
1. A laser projection module, comprising:
a laser projection module cover comprising a top portion, a bottom portion and a one or more of side portions to define a cavity within the cover, wherein the cavity is configured to couple an optical lens to reflect out of the top portion of the laser projection module cover;
a cover lead frame, at least partially integrated into the bottom portion of the laser projection module cover, the cover lead frame comprising an outer lead frame portion and an H-shaped inner lead frame portion relative to the laser projection module cover, wherein the H-shaped inner lead frame portion is configured to electrically couple to a laser diode assembly physically offset to one side of the H-shape of the inner lead frame portion within the cavity such that laser light from the laser diode assembly passes through a refractive lens centrally physically coupled to the H-shape of the inner lead frame portion for reflection from the optical lens associated with the H-shape distally from the laser diode assembly, the cover lead frame being configured to be physically coupled to at least the bottom portion of the laser projection module cover.
2. The laser projection module of claim 1 , wherein the laser diode assembly comprises a laser diode, a chip on sub-mount portion, a heat sink and a die attach pad portion.
3. The laser projection module of claim 2 , wherein the laser diode assembly is wire bonded to the inner lead frame portion.
4. The laser diode projection module of claim 2 , wherein the heat sink of the laser diode assembly is configured to be outside of the laser projection module cover.
5. The laser diode projection module of claim 4 , wherein the die attach pad portion comprises an exposed portion.
6. The laser diode projection module of claim 2 , wherein the heat sink of the laser diode assembly is configured to be within the cavity of the laser projection module cover.
7. The laser projection module of claim 1 , wherein the laser diode assembly comprises a laser diode coupled to a laser diode sub-mount coupled to a die attach pad portion within the cavity of the cover.
8. The laser projection module of claim 1 , further comprising a diffractive optical element physically coupled to the laser projection module cover substantially above and optically coupled to the optical lens for the reflecting.
9. The laser projection module of claim 8 , wherein the diffractive optical element comprises one of a diffractive lens, a beam splitter, a diffractive diffuse and a corrector plate.
10. The laser projection module of claim 1 , further comprising a secondary lens; optically physically coupled to the laser projection module cover substantially above and optically coupled above to the optical lens.
11. The laser projection module of claim 10 , further comprises a mirror, configured to receive light emission from the secondary lens.
12. The laser projection module of claim 1 , wherein the refractive lens comprises a prism.
13. The laser projection module of claim 1 , wherein the cover lead frame comprises at least one active lead, at least one dummy lead and a tie bar.