Encapsulated light-guide optical element
AssigneeLumus Ltd.
InventorsAmit Maziel, Yuval Ofir
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Abstract
A light-guide optical element (LOE) and methods of manufacture are disclosed. The LOE includes a transparent substrate having a first refractive index, the substrate having a pair of parallel external surfaces along a length thereof, and a plurality of mutually parallel at least partially reflective internal surfaces, the mutually parallel internal surfaces being angled obliquely relative to the pair of external surfaces; and a transparent polymer resin encapsulating at least a part of the substrate to form an encapsulated structure, the polymer resin having a second refractive index that is matched to the first refractive index; wherein the encapsulated structure comprises a pair of parallel external surfaces of optical quality formed from the resin.
Claims20
A method of manufacturing a light-guide optical element (LOE) comprising the steps of:
- forming an optical combiner element comprised of a transparent substrate having a first refractive index, the combiner element having a first pair of parallel external surfaces along a length thereof, and a plurality of mutually parallel at least partially reflective internal surfaces, the mutually parallel internal surfaces being angled obliquely relative to the first pair of external surfaces;
- and
- encapsulating, using a molding process, at least a part of the combiner element with a transparent polymer resin to form an encapsulated structure, the resin having a second refractive index that is matched to the first refractive index,
- wherein said encapsulated structure comprises a second pair of parallel external surfaces of optical quality formed from the resin.
A light-guide optical element (LOE) comprising:
- an optical combiner element made of a transparent substrate having a first refractive index, the optical combiner element having a first pair of parallel external surfaces along a length thereof, and a plurality of mutually parallel at least partially reflective internal surfaces, the mutually parallel internal surfaces being angled obliquely relative to the first pair of external surfaces;
- and
- a transparent polymer encapsulating at least a part of the optical combiner element to form an encapsulated structure, the polymer having a second refractive index that is matched to the first refractive index,
- wherein said encapsulated structure comprises a second pair of parallel external surfaces of optical quality formed from the polymer.
Dependencies are inferred from the claim text.