Lumus Ltd.

Dror Hermoni

Elad Sharlin

Kobi Greenstein

Amir Shapira

Tsion Eisenfeld

Jonathan Gelberg

Netanel Goldstein

Mordechai Gilo

Elad Lavi

Chaim Aldaag

Tzofia Lavi

Yosef Lavian

Shimon Grabarnik

Edgar Friedmann

Tsion Eisenffeld

Ido Fuchs

Lilach Zuaretz

A method of fabricating a light-guide optical element having a plurality of partially reflecting surfaces is disclosed. The method includes providing a plurality of transparent plates, each plate polished on two opposite surfaces such that the surfaces are parallel to each other, coating a first of the surfaces of a subset of plates with a first coating, coating a second of the surfaces of the subset of plates with a second coating; bonding together the plurality of transparent plates to form a stack, and cutting the stack along parallel planes obliquely angled to the faces of the transparent plates so as to form the optical element, wherein the first coating is a partially reflective coating have a first set of mechanical properties, and the second coating is selected from the group consisting of: a coating similar to the first coating and a non-reflective coating having a second set of mechanical properties substantially similar to the first set of mechanical properties.

Method of fabricating a light-guide optical element

A method for producing light-guide optical elements (LOEs) () each having a set of mutually-parallel partially-reflecting surfaces () located between, and oriented non-parallel to, a pair of major external surfaces, and at least one region () without partially-reflecting surfaces. The method includes bonding together parallel-faced plates () at interfaces to form a stack () of plates with partially-reflecting coatings between them. The stack is cut and polished to form a boundary plane () intersecting the interfaces, and a block () of transparent material is bonded to the stack. The resulting precursor structure (′) is sliced along parallel planes to form slices, each containing a part of the stack for the active region of the LOE and a part of the block.

Method for producing light-guide optical elements

Optical sample characterization facilitates measurement and testing such as transmittance or reflectance at any discrete angle in a full range of angles of light propagation through a coated glass plate having a higher than air index of refraction. A rotatable assembly includes a cylinder having a hollow, and a receptacle including the hollow. The receptacle also contains a fluid having a refractive index matching the refractive index of the cylinder and coated plate. An optical light beam is input normal to the surface of the cylinder, travels through the cylinder, then via the index matching fluid through the coating, the coated glass plate, the fluid, the other side of the cylinder, and is collected for analysis. Due at least in part to the index matching fluid surrounding the coated plate, the plate can be rotated through a full range of angles (&#xb1;90&#xb0;, etc.) for full range testing of the coating.

Optical sample characterization

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Dror Hermoni