| CPC G02B 27/0172 (2013.01) [G02B 6/0045 (2013.01); G02B 6/0053 (2013.01); G02B 6/0055 (2013.01)] | 12 Claims |
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1. An optical system for generating a virtual image of a source image provided on an imager, comprising:
a light guide that can be worn in front of an eye;
an input coupling that couples a light beam path originating from the source image into the light guide; and
an output coupling that couples the light beam path out of the light guide toward the eye,
wherein the input coupling is configured to couple the light beam path into the light guide such that the light beam path propagates within the light guide by way of reflections at an inner and/or outer surface of the light guide to the output coupling,
wherein the output coupling has an area that is impinged by the light beam path propagating in the light guide to the output coupling,
wherein the area of the output coupling impinged by the light beam path comprises a surface that has been treated such that the light beam path is output coupled from the light guide to the eye from first portions of the area of the output coupling, the first portions satisfying minimum requirements in respect of the surface quality for imaging the source image, while said light beam path is not output coupled or is output coupled with a reduced intensity that does not noticeably impair a quality of the source image imaging, from the light guide to the eye in second portions of the area of the output coupling which differ from the first portions.
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