Optoelectronic module having a stamped metal optic
View Patent ↗A stamped metal optic includes at least a bench for holding at least one optoelectronic component and a reflector for folding an optical pathway. The stamped metal optic is formed of a piece of metal that is shaped using known metal stamping techniques. The stamped metal optic preferably has at least one fiducial mark used to ensure that the optoelectronic device is precisely aligned with the reflector.
1. An optoelectronic module, comprising:
a unitary metal body having a bench, a reflector integrally connected to and opposed to the bench and a ball lens seat, the ball lens seat located in the unitary metal body along an optical path between the bench and the reflector, the reflector arranged to fold the optical path by a non-zero angle;
an optoelectronic device mounted in an aligned position with the optical path on the bench; and
a ball lens secured in the ball lens seat.
2. The optoelectronic module of claim 1 , wherein a surface of the reflector facing the ball lens is plated with a reflective metal.
3. A stamped metal optic, comprising:
a unitary, or integrally formed, metal body having a bench upon which at least one optoelectronic device is mounted in an aligned position and a reflector integrally connected to the bench and optically aligned with said aligned position such that an optical axis of the optoelectronic device is in optical alignment with an optical axis of the reflector;
at least a first ball lens seat formed in the unitary metal body in between the aligned position of the optoelectronic device and the reflector; and
at least a first ball lens seated in and fixedly secured to the first ball lens seat,
wherein the reflector is flat in shape,
wherein said at least one optoelectronic device is a photodiode,
wherein the reflector receives a collimated light beam that is incident on the reflector at an angle of incidence and reflects the received collimated light beam onto the first ball lens at a non-zero angle relative to the angle of incidence, and
wherein the first ball lens focuses the collimated light beam received thereby onto the photodiode.
4. The stamped metal optic of claim 3 , wherein the unitary metal body further comprises:
at least a first fiduciary mark formed in the bench adjacent said aligned position of the optoelectronic device, the fiducial mark containing alignment information for mounting the optoelectronic device on the bench.
5. The stamped metal optic of claim 3 , wherein at least the reflector is gold plated.
6. A stamped metal optic, comprising:
a unitary, or integrally formed, metal body having a bench upon which at least one optoelectronic device is mounted in an aligned position and a reflector integrally connected to the bench and optically aligned with said aligned position such that an optical axis of the optoelectronic device is in optical alignment with an optical axis of the reflector;
at least a first ball lens seat formed in the unitary metal body in between the aligned position of the optoelectronic device and the reflector; and
at least a first ball lens seated in and fixedly secured to the first ball lens seat,
wherein the reflector is flat in shape,
wherein said at least one optoelectronic device is a laser diode that emits a diverging light beam that is incident on the first ball lens,
wherein the first ball lens collimates the diverging light beam into a collimated light beam and directs the collimated light beam onto the reflector, and
wherein the reflector reflects the collimated light beam by a non-zero angle relative to an angle of incidence of the diverging light beam on the reflector.
7. A method for forming a stamped metal optic for use in an optical communications module, the method comprising:
performing a sheet metal stamping process on a sheet metal work piece to form a plurality of metal optics in the sheet metal work piece, each metal optic having a unitary, or integrally formed, metal body comprising:
a bench;
a reflector integrally connected to the bench; and
a ball lens seat between the bench and the reflector.
8. The method of claim 7 , wherein the reflector is flat.
9. The method of claim 7 , further comprising:
performing a shearing process to singulate the metal body from the sheet metal work piece.
10. The method of claim 3 , further comprising:
performing a plating process to plate the reflector of the metal body with a reflective metal.
11. The method of claim 6 , wherein the reflective metal is gold.