Patent ID: 9348196
Filing Date: 2016-05-24
CPC Classification: B24B,B29C,B29K,B29L,G02B,G03B,G06T,H04N

Claim Text:
1. A method for forming a cap structure that covers a camera of a camera system, the cap structure including a seamless lens cover for the camera system, the method comprising the steps of: injection molding the cap structure from an ultra-high molecular weight polyethylene material, the cap structure including a generally cylindrical shape having a top end, an open bottom end, and a cylindrical sidewall extending therebetween, the cylindrical sidewall being a lens cover through which images are obtained from the camera disposed within the cap structure during use, at least the lens cover of the cap structure being molded so as to be seamless and at an initial thickness that is greater than a final desired thickness, the initial as molded sidewall thickness being from about 0.060 inch to about 0.1 inch; machining away a portion of the initial sidewall thickness to achieve a reduced thickness after machining that is less than 0.025 inch; wet sanding the lens cover using fine grit sandpaper; wet polishing the lens cover using a first foam pad and a first polishing compound; wet polishing the lens cover using a second foam pad and a second polishing compound, the second foam pad and the second polishing compound being differently configured than the first foam pad and the first polishing compound; wherein the finished lens cover has a transmittance to a thermal spectrum of at least about 60%, exhibits no seams, no significant lensing characteristics, and no significant curvature effect.