COATING FOR LIGHT SECURITY

摘要

A night vision system includes an eyepiece and a video camera to capture a video image that can be remote to the eyepiece. The eyepiece includes an optical device with a front side and a back side. A splitting surface within the optical device reflects some of a video image toward an eye of a user of the eyepiece, and the splitting surface further allows some light of an optical image received from in front of the eyepiece to past through the eyepiece to the eye of the user. The layer of switchable coating on the eyepiece can be switched between a transparent mode and an opaque mode by the user. When in an opaque mode no light can leave the front side of the optical device and only the video image can be seen through the eyepiece.

主权项

1. A night vision system comprising:
an eyepiece comprising:
an optical device with a front side and a back side;a video camera to project video image collected external of the eyepiece toward an eye of a user of the eyepiece; anda layer of switchable coating on the eyepiece switchable between a transparent mode and an opaque mode, wherein when in the opaque mode no light can leave the front side of the optical device and only the video image can be seen through the eyepiece.