Filament alignment mechanism for high accuracy lamps
View Patent ↗A system for aligning a light source to a reflector on a frame for efficiently illuminating a target along a first axis of the reflector. The light source is coupled to an arm that is linearly translatable by a driver assembly coupled to the frame. The travel of the driver assembly is aligned to a plane defined by two axes of the reflector with an alignment pin coupled to the driver assembly and adjusted to the frame. The light source may then be aligned for travel in the first axis by mechanically isolating the drive mechanism from a malleable arm connected to the light source and by bending the malleable arm in at least one dimension.
1. An apparatus comprising:
a light source;
a driver to translate the light source linearly;
an arm having a first support arm segment coupled to the driver to permit the driver to translate the arm, a bulb lead, offset from and connected to a bulb mount through an insulating spacer, wherein the bulb lead conducts current for the light source; and
a malleable second support arm segment extending from the first support arm segment bent to align the light source with a desired focal point on a parallel plane.
2. The apparatus of claim 1 further comprising:
an alignment pin coupled to the driver to align translation of the arm in a direction substantially perpendicular to a desired focal plane.
3. The apparatus of claim 1 further comprising;
a shade connected to a distal end of the second support arm segment.
4. The apparatus of claim 1 wherein the driver comprises:
an actuator.
5. The apparatus of claim 4 wherein the driver further comprises:
a lead screw coupled to the actuator;
a lead screw nut slideably coupled to the lead screw;
a nut follower portion coupled to the lead screw nut; and
a bearing coupled between the nut follower portion and the first support arm segment to transfer movement from the lead screw to the first support arm segment.
6. An apparatus comprising:
an actuator;
a frame coupled to the actuator;
an arm having a first support arm segment coupled to the actuator to permit the actuator to translate the arm along an axis;
means for adjusting along at least one axis the position of a light source relative to the first support arm segment to align the light source on a parallel plane; and
means for aligning the actuator to the frame to align a travel of the means for adjusting to a plane substantially perpendicular to the parallel plane.
7. A method comprising:
coupling a reflector to a frame;
coupling a light source to a malleable arm;
coupling the malleable arm to a drive mechanism coupled to the frame;
mechanically isolating the drive mechanism from the malleable arm;
bending the malleable arm in at least one dimension to align the light source with the reflector; and
removing the mechanically isolating process between the drive mechanism and the malleable arm.
8. The method of claim 7 wherein the light source is a bulb having a filament.
9. The method of claim 7 further comprising:
adjusting an alignment pin coupled to the drive mechanism relative to the frame so that travel of the malleable arm remains in a plane substantially perpendicular to a desired focal plane.
10. An apparatus comprising:
a light source;
an arm providing support to the light source substantially along at least one axis of a reflector, wherein the arm comprises a bulb lead, offset from and connected to a bulb mount through an insulating spacer, wherein the bulb lead conducts current for the light source;
a zone of compliant material coupling the light source to the arm, the zone of compliant material allowing the light source to translate and rotate, independent of any articulated elements, relative to the reflector in response to an external operation to align the light source relative to the reflector; and
the zone of compliant material maintaining the aligned light source position after completion of the external operation.
11. The apparatus of claim 10 further comprising:
a driver to linearly transport the light source after alignment.
12. The apparatus of claim 11 further comprising:
an alignment pin coupled to the driver to align translation of the arm in a direction substantially perpendicular to a desired focal plane.
13. The apparatus of claim 10 further comprising;
a shade connected to a distal end of the arm.
14. The apparatus of claim 11 wherein the driver comprises:
an actuator.
15. The apparatus of claim 14 wherein the driver further comprises:
a lead screw coupled to the actuator;
a lead screw nut slideably coupled to the lead screw;
a nut follower portion coupled to the lead screw nut; and
a bearing coupled between the nut follower portion and the arm to transfer movement from the lead screw to the arm.