Electro-holographic lens
OwnerJacob Halevy-Politch, Uriel Fischerinventors
Life of this patent
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Abstract
An electro-holographic lens device comprising: an active layer made from a transparent photo-refractive material, whose refractive index may be locally modified by locally applying an electric field; an array of electrodes in a predetermined density, provided adjacent the active layer for locally providing electric fields across an array of predetermined locations in the active layer; and a control unit for applying and controlling application of electric fields in a dynamically controllable predetermined locations for creating a holographic fringe pattern across the active layer.
Claims31
An electro-optic system for concentrating a light beam that is incident from a moving light source onto at least one predetermined target, the system comprising:
- At least one of a plurality of layers of electro-holographic lens devices comprising:
- an active layer made from a transparent photo-refractive material, whose refractive index may be locally modified by locally applying an electric field;
- an array of electrodes in a predetermined density, provided adjacent the active layer for locally providing electric fields across an array of predetermined locations in the active layer;
- a tracking unit for tracking the position of the light source;
- a control unit for applying and controlling application of electric fields in a dynamically controllable predetermined locations obtained from the tracking unit, the information relating to the location of the light source for creating a dynamically changing holographic fringe pattern across the active layer, creating a dynamically changing concentrating lens, so as to continuously focus the light beam onto the at least one predetermined target.
A method for concentrating a light beam that is incident from a moving light source onto at least one predetermined target, the method comprising:
- providing at least one of a plurality of layers of an electro-holographic lens devices comprising:
- an active layer made from a transparent photo-refractive material, whose refractive index may be locally modified by locally applying an electric field;
- an array of electrodes in a predetermined density, provided adjacent the active layer for locally providing electric fields across an array of predetermined locations in the active layer;
- a tracking unit for tracking the position of the light source;
- a control unit for applying and controlling application of electric fields in a dynamically controllable predetermined locations based on information from the tracking unit on the position of the light source;
- creating a dynamically changing holographic fringe pattern across the active layer thus creating a dynamically changing concentrating lens so as to continuously focus the light beam onto said at least one predetermined target.
Dependencies are inferred from the claim text.