Imaging optical system as well as display device with such an imaging optical system

An imaging optical system for a display device that can be fitted on the head of a user and generate an image, the system comprising:

• an optical element comprising an entry surface;
• and
• a spectacle lens comprising a coupling-in section and a coupling-out section spaced apart therefrom,
• wherein the imaging optical system is configured to guide the generated image fed to the optical element via the entry surface in the optical element, and to couple the generated image from the optical element into the spectacle lens, in which the generated image is guided to the coupling-out section and coupled out via the coupling-out section to generate a virtual image,
• wherein the optical element comprises, in addition to the entry surface, at least one reflecting surface on which the generated image is reflected for guiding in the optical element, and an exit surface, via which the generated image is coupled out of the optical element and is guided to the coupling-out section of the spectacle lens, and
• wherein one or more of the entry surface, the at least one reflecting surface and the exit surface are formed curved, with the result that the optical element has an imaging property,
• wherein the entry surface is both transmissive and reflective, the entry surface being transmissive such that the entry surface couples the generated image into the optical element, and the entry surface being reflective such that the entry surface reflects the generated image in the optical element.