Electrostatic discharge mitigation systems and methods for imaging devices
Various techniques are provided to facilitate electrostatic discharge mitigation for imaging devices. In one example, an imaging device includes an imager assembly. The imaging device further includes a lens holder. The lens holder includes a receiving interface configured to receive a lens assembly therein. The lens holder further includes an alignment pin including electrically conductive material and coupled to the imager assembly to provide an electrostatic discharge path via the imager assembly, where a first portion of the alignment pin has the electrically conductive material exposed and a second portion of the alignment pin has an insulating layer disposed thereon. Related methods and systems are also provided.
1. An imaging device, comprising:
an imager assembly; and
a lens holder comprising:
a receiving interface configured to receive a lens assembly therein; and
an alignment pin comprising electrically conductive material and coupled to the imager assembly to provide an electrostatic discharge path via the imager assembly, wherein a first portion of the alignment pin has the electrically conductive material exposed and a second portion of the alignment pin has an insulating layer disposed on the electrically conductive material.
2. The imaging device of claim 1 , further comprising one or more additional alignment pins comprising electrically conductive material and coupled to the imager assembly to provide one or more additional electrostatic discharge paths via the imager assembly.
3. The imaging device of claim 2 , wherein the alignment pin and the one or more additional alignment pins are parallel with each other to provide parallel paths for electrostatic discharge, and wherein the parallel paths are along a periphery of the lens holder and the imager assembly.
4. The imaging device of claim 1 , wherein the first portion of the alignment pin is configured to contact an external surface of the imager assembly to provide the electrostatic discharge path.
5. The imaging device of claim 4 , wherein the first portion of the alignment pin slopes inwards from a first end to a second end such that the first end is larger than the second end, and wherein the second end is configured to be in contact with the external surface of the imager assembly.
6. The imaging device of claim 4 , wherein the external surface of the imager assembly is electrically conductive.
7. The imaging device of claim 1 , wherein the second portion of the alignment pin is a remaining portion of the alignment pin.
8. The imaging device of claim 1 , wherein the insulating layer comprises an oxide coating.
9. The imaging device of claim 8 , wherein the oxide coating comprises a keronite coating.
10. The imaging device of claim 1 , further comprising the lens assembly, wherein the electrically conductive material comprises magnesium.
11. A method of making an imaging device, the method comprising:
providing a lens holder coated with an insulating layer, wherein the lens holder comprises an alignment pin, and wherein the alignment pin comprises electrically conductive material with the insulating layer disposed thereon;
removing a portion of the insulating layer from the alignment pin to provide an exposed portion of the alignment pin; and
coupling the alignment pin to an imager assembly to provide an electrostatic discharge path via the imager assembly.
12. The method of claim 11 , wherein the removing comprises grinding down the portion of the insulating layer from the alignment pin to provide the exposed portion.
13. The method of claim 11 , wherein the coupling comprises:
attaching the lens holder to the imager assembly using one or more engagement elements; and
providing contact between the exposed portion of the alignment pin and the imager assembly.
14. The method of claim 13 , wherein the exposed portion of the alignment pin is in contact with an external surface of the imager assembly.
15. The method of claim 14 , wherein the exposed portion of the alignment pin slopes inwards from a first end to a second end, and wherein the second end is in contact with the external surface of the imager assembly.
16. The method of claim 11 , wherein the providing comprises:
forming the lens holder including the alignment pin; and
coating the lens holder with the insulating layer to provide the lens holder coated with the insulating layer.
17. The method of claim 11 , further comprising inserting a lens assembly within a receiving interface of the lens holder.
18. The method of claim 11 , wherein the insulating layer comprises a keronite coating, and wherein the electrically conductive material comprises magnesium.
19. The imaging device of claim 1 , further comprising an engagement element that secures the lens holder to the imager assembly, wherein the imager assembly comprises at least one image sensor configured to capture image data of a scene.
20. The imaging device of claim 1 , wherein the lens assembly, the lens holder, and the imager assembly share a common optical axis.