Optical apparatus for recording a holographic device and method of recording
First Claim
1. An optical apparatus for recording a hologram comprising:
- a first hologram comprising a multiplicity of holographic elements having a predefined pattern, each of said holographic elements characterized by one of a predefined set of grating prescriptions;
a cell having a first transparent substrate supporting a layer of recordable holographic material; and
a light source to provide incident light,wherein said hologram is operative to propagate a set of one or more beams from said incident light,wherein said set of beams are projected onto a predefined region of said layer such that said holographic material can be recorded within said cell to form a second hologram in accordance with said pattern of said holographic elements,wherein each said prescription is designed for modulating at least one of phase, amplitude, and angle of said light.
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Accused Products
Abstract
An apparatus for recording a holographic device comprises: a master hologram comprising a multiplicity of holographic elements each characterized by one of a predefined set of grating prescriptions; a transparent substrate supporting a layer of holographic material; and a light source. Each holographic element diffracts source light onto a predefined region of the layer. Each prescription modulates at least one of phase, amplitude, and angle of the light. There is further provided a method of recording a holographic device, comprising the steps of: providing said apparatus; exposing the master to illumination from the source; and diffracting light from each holographic element onto a predefined region of the layer.
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Citations
21 Claims
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1. An optical apparatus for recording a hologram comprising:
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a first hologram comprising a multiplicity of holographic elements having a predefined pattern, each of said holographic elements characterized by one of a predefined set of grating prescriptions; a cell having a first transparent substrate supporting a layer of recordable holographic material; and a light source to provide incident light, wherein said hologram is operative to propagate a set of one or more beams from said incident light, wherein said set of beams are projected onto a predefined region of said layer such that said holographic material can be recorded within said cell to form a second hologram in accordance with said pattern of said holographic elements, wherein each said prescription is designed for modulating at least one of phase, amplitude, and angle of said light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 20)
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15. A method of recording a holographic device, comprising the steps of:
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providing a first hologram comprising a multiplicity of holographic elements having a predefined pattern, each of said holographic elements with prescriptions for modulating at least one of phase, amplitude, and angle of said light; providing a light source; providing a cell having a first transparent substrate supporting a layer of recordable holographic material; exposing said first hologram to illumination from said source; wherein said first hologram is operative to generate a set of one or more beams from said incident light, wherein said set of beams are formed by diffraction using said multiplicity of holographic elements, of said incident light, wherein said set of beams are projected onto a predefined region of said layer such that said holographic material can be recorded within said cell to form a second hologram in accordance with said pattern of said holographic elements. - View Dependent Claims (16, 17, 18, 19, 21)
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Specification