Optinvent

Kayvan Mirza

Khaled Sarayeddine

Pascal Benoit

Simon Julien

Yao Liu

Piero Sallen

A light guide includes a first and second transparent monolithic optical parts (TMOP). The first TMOP has a first surface having two sets with one flat surface followed by one prism array. Each flat surface has a partially-reflective coating, and the first TMOP has a flat opposite second surface. Each prism array has two prisms having a first and a second surfaces which are oblique to each other and to the first TMOP's opposite second surface. The prism arrays first surfaces have a partially-reflective coating. The second TMOP has a first surface with a geometrically complementary shape relative to the shape of the first TMOP's first surface, and has a flat opposite second surface. The first and second TMOPs are assembled together using an optically transparent adhesive material, such that the second surfaces of the first and second TMOP of the light guide assembly are parallel to each other.

2D-pupil expansion light guide assembly

An ocular vision system with a display module, which includes a transparent optical guide, is adapted for propagating, by total internal reflections, a light beam transporting an image as far as an extraction section of the optical guide. The system may include: means for positioning the optical guide in a first position in which the extraction zone is placed along a first axis corresponding to a nominal axis of sight of the user's eye; means for positioning the optical guide in a second position in which the extraction zone is placed along a second axis offset with respect to the nominal axis of sight of the user's eye; and means for rotating the optical guide about an axis intended to pass substantially through the center of rotation of the user's eye, enabling the optical guide to pass from the first position to the second position and vice versa.

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Rennes, France

Kayvan Mirza