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US 12,285,913 B2Granted
Use of dye-type polarizers in a photopolymer curing device
AssigneeFormlabs, Inc.
InventorsAndrew Goldman, Hayley Whelan, Henry Whitney, Maxim Lobovsky, Mehmet Dogan
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Abstract
A curing system for an additive fabrication system includes a light source, a liquid crystal cell, and a first polarizer. The light source is configured to emit light at a wavelength suitable for curing a material. The liquid crystal cell is configured to receive the light from the light source. The first polarizer comprises a polyvinyl alcohol (PVA) matrix and organic dyes impregnated into the PVA matrix.
Claims20
A curing system for an additive fabrication system, the curing system comprising:
- a light source configured to emit light at a wavelength suitable for curing a photopolymerizable material;
- a liquid crystal cell configured to receive the light from the light source;
- and
- a first polarizer disposed between the light source and the liquid crystal cell, wherein the first polarizer comprises:
- a polyvinyl alcohol (PVA) matrix;
- and
- an organic dye impregnated into the PVA matrix.
4 more elements
A method of additive fabrication, the method comprising:
- emitting, from a light source, light at a wavelength suitable for curing a photopolymerizable material;
- receiving the light at a liquid crystal cell;
- and
- polarizing the light at a first polarizer disposed between the light source and the liquid crystal cell, wherein the first polarizer comprises:
- a polyvinyl alcohol (PVA) matrix;
- and
- an organic dye impregnated into the PVA matrix.
4 more elements
Dependencies are inferred from the claim text.