Apparatus for etching multiple surfaces of luminaire reflector
View Patent ↗An apparatus for etching multiple surfaces of a hydroformed powder coated luminaire reflector is described. The system includes a laser, one or more high speed scan heads, a laser marking station and a conveyance device. The system positions a reflector into optical alignment with the scan heads to allow permanent etching of the surface thereof.
1. A luminaire reflector marking station, comprising:
a laser marking station having a conveyor infeed area and a conveyor outfeed area and a conveyor extending between said infeed and said outfeed;
a first laser scan head optically connected to a laser, said first laser scan head directing a laser beam into said laser marking station;
a bell shaped luminaire reflector passing through said laser marking station on said conveyor, said reflector held in an alignment position with said scan head by a pallet transport movable between said infeed and said outfeed;
wherein said laser etches indicia on either an interior curved side of said luminaire or an exterior curved side of said luminaire;
wherein said laser marking station has a second scan head, said laser optionally optically coupled to both said first scan head and said second scan head by a laser beam switch.
2. The luminaire reflector marking station of claim 1 wherein said laser is in optical alignment with a curved exterior side of said luminaire.
3. The luminaire reflector marking station of claim 1 wherein said laser is in optical alignment with a curved interior side of said luminaire.
4. The luminaire reflector marking station of claim 1 wherein said laser is an Nd:Yag laser.
5. The luminaire reflector marking station of claim 1 wherein said laser is in optical alignment with area on said side of said luminaire of about 4 inches by 3 inches in dimension.
6. The luminaire reflector marking station of claim 1 wherein said laser marking station has a first door actuatable over said conveyor infeed and a second door actuatable over said conveyor outfeed.
7. The luminaire reflector marking station of claim 1 wherein said laser marking station is an opaque enclosure.
8. The luminaire reflector marking station of claim 1 wherein said first laser scan head is mounted on a top portion of said laser marking station.
9. The luminaire reflector marking station of claim 1 wherein said reflector is a hydroformed powder coated reflector.
10. A laser etching station for marking a curved surface of a powder coated luminaire reflector, comprising:
a conveyor extending through a laser etching station;
a laser optically connected to a first scan head, said first scan head positioned adjacent an aperture in said laser etching station, said scan head directing a laser beam into said laser etching station;
a first side door and a second side door actuatable to open and close on said laser etching station;
a powder coated luminaire reflector positioned in an optical path of said laser within said laser etching station;
wherein the focal point of said laser beam emitted by said first scan head is optimized along a curved plane of an interior surface of said reflector.
11. The laser etching station of claim 10 wherein said laser has a second scan head optically connected to said laser for marking on an exterior surface of said reflector.
12. The laser etching station of claim 11 further comprising a beam switch device interposed between said first scan head, said second scan head and said laser.
13. A laser ablating station for ablating the surface of a luminaire reflector, comprising:
a conveyor passing a powder coated reflector through a laser ablating station;
a filtered or opaque enclosure forming said laser ablating station, said station having a conveyor infeed and conveyor outfeed;
an upper scanning head and a lower scanning head both in optical connectivity to a laser and focusing said laser onto a curved surface of said luminaire reflector;
a laser beam switch allowing said laser be switched to either said upper scanning head or said lower scanning head.
14. The laser ablating station of claim 13 wherein said ablating laser of said upper scanning head is focused on an interior curved surface of said luminaire reflector and wherein said oblating laser of said lower scanning head is focused on an exterior curved surface of said luminaire reflector.
15. The laser ablating station of claim 14 wherein said laser is a Nd:Yag laser.
16. The laser ablating station of claim 14 wherein said station further has a vertically actuable conveyor infeed door and a vertically actuable conveyor outfeed door.
17. The laser ablating station of claim 15 wherein said laser is a 100 watt laser.
18. A system for laser ablating an interior surface of a powder coated luminaire reflector, comprising:
a conveyor having a path through a laser ablation station;
a plurality of walls surrounding said laser ablation station;
a first laser lens system for directing a laser to said reflector;
an optical sensing mechanism electronically connected to a control subsystem to determine when a reflector is positioned in optical alignment with said first laser lens system;
said system further comprising a second laser lens system for directing said laser to a second position on said reflector;
wherein said first lens system is optically aligned to an interior curved surface of said reflector;
where said second lens system is optically aligned to an exterior surface of said reflector.