Spatial deposition of resins with different functionality
AssigneeFacebook Technologies, LLC
InventorsAustin Lane, Matthew E. Colburn
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Abstract
Techniques disclosed herein relate to optical devices. Resins with different optical properties can be deposited in different areas to provide increased optical functionality. It can be difficult to design a single photopolymer material that meets several technical requirements. Different resins can be deposited on the same substrate to make a single film with spatially varying properties. Different resins can also be applied to different substrates in a stack. By using different resins, an optical component can be made that meets several technical requirements.
Claims20
A device comprising:
- a first holographic recording material disposed on a substrate, wherein the first holographic recording material comprises a first optical element;
- a second holographic recording material disposed on the substrate, wherein:
- the second holographic recording material comprises a second optical element;
- and
- the second optical element is smaller in size than the first optical element based on a property of the second holographic recording material compared to a property of the first holographic recording material.
A method comprising:
- depositing a first material on a substrate, wherein the first material forms a first pattern on the substrate;
- depositing a second material on the substrate, wherein:
- the second material forms a second pattern on the substrate;
- and
- the first pattern at least partially overlaps the second pattern;
- and
- exposing the first material and the second material to light to form a first optical element in the first material and a second optical element in the second material, wherein the second optical element is smaller than the first optical element.
A method comprising:
- applying a first material to a substrate, wherein:
- the first material comprises a first matrix, a first monomer, and a first photoinitiator;
- the first monomer is a writing monomer configured to polymerize based on a reaction with the first photoinitiator;
- and
- the first material is characterized by a first diffusion coefficient of the first monomer in the first matrix;
- applying a second material to the substrate, wherein:
- the second material comprises a second matrix, a second monomer, and a second photoinitiator;
- the second monomer is a writing monomer configured to polymerize based on a reaction with the second photoinitiator;
- the second material is characterized by a second diffusion coefficient of the second monomer in the second matrix;
- and
- the second diffusion coefficient is less than the first diffusion coefficient;
- and
- exposing the first material and the second material to light to form optical elements in the first material and in the second material.
Dependencies are inferred from the claim text.