Patent ID: 9405118
Filing Date: 2016-08-02
CPC Classification: F41H,G02B

Claim Text:
1. An optical cloaking system consisting of: a first optical device which is transparent and formed entirely of material with a positive refractive index; and a second optical device which is transparent and formed entirely of material with a positive refractive index, wherein the first and second optical devices have a same shape, are configured to be disposed symmetrically to each other on opposite sides of an adjacent object to be cloaked, and which jointly create a cloaked object cavity between the optical devices encompassing the adjacent object from the viewpoint of an observer positioned with either of the optical devices between the observer and the object, the first optical device comprises a first portion which compresses and bends, only by refraction in substantially only one direction, light rays entering the first portion at a predetermined angle to a direction at which the light enters the first portion, and passes the compressed and bent light, and a second portion which receives the compressed and bent light rays which are passed from the first portion, which further alters a size ratio of and bends the received light rays only by refraction in substantially the same direction as the first portion, and which emits the further altered and bent light rays in a direction substantially parallel to the direction at which the light rays enter the first portion, the second optical device comprises a third portion which receives the further altered and bent light rays which are emitted from the second portion, alters a size ratio of and bends the received light rays only by refraction in a manner opposite to the second portion, and passes the light rays, and a fourth portion which receives the light rays passed from the third portion, bends and decompresses the light rays only by refraction in a manner opposite to the first portion, and emits the light rays with a size ratio and directivity the same as the light rays which enter the first portion, said first and second optical devices are movable relative to each other so that a size of the cloaked object cavity is variable based on a distance between the first and second optical devices.