Patent ID: 6942340

Claim:
Optical apparatus for creating a image on a background view which includes at least a first lens through which a user can see the background view with a first eye, which is light transmissive and which has an outer reflective surface at an interface of a first surface of the first lens with atmosphere and an inner reflective surface at an interface of a second surface of the first lens with the atmosphere, and a device for projecting an image onto the outer reflective surface which is orientated to reflect a first image of the projected image, of a first light intensity, onto the first eye and wherein the first lens is made from a lens material with an absorption A of at least 60% at least over the spectral range of 560 nm to 660 nm so that a second image of the projected image which is directed onto the first eye by the inner reflective surface has a second intensity which is less than 16% of the first intensity.