Panoramic Night Vision Goggle Testing For Diagnosis and Repair

摘要

During operational testing of the panoramic night vision goggles (PNVG) over the past eighteen months, the prototype systems have shown wear which has resulted in degraded performance. When a PNVG degrades to a point that pilots find objectionable, the PNVGs are sent back to the lab for repair. The lab has set up a program to assess the PNVGs received from the field to verify the probable source of the objectionable characteristic(s). Once determined, the PNVGs are shipped back to the manufacturer for repair. After repair, the PNVGs are again shipped to the lab to verify repairs and assess the overall condition before returning the PNVG to the field for further operational testing. This paper discusses the selected series of tests that are performed to diagnose the more common recurring problems and to determine if the manufacturer satisfactorily repaired them. These tests include the assessment of: gain, maximum luminance output, visual acuity ('resolution'), objective lens focus range, eyepiece diopter setting, and image discontinuity at the inboard/outboard channel boundary. The results of this testing are presented along with a comparison of data taken before and after repair with data taken during previous evaluations.