Additive manufacture of optical components
A method of forming an optical component includes depositing slurry that includes glass powder material onto a facesheet and fusing the glass powder material to a facesheet to form a first core material layer on the facesheet. The method also includes successively fusing glass powder material in a plurality of additional core material layers to build a core material structure on the facesheet. The method can include selectively depositing slurry including glass powder material over only a portion of at least one of the facesheet, the first core material layer, and/or the one of the additional core material layers. Depositing the slurry can include extruding the slurry from an extruder.
1. A method of forming an optical component comprising:
forming a build plate comprising a facesheet attached to a mandrel that is contoured to match the facesheet; and
forming successive layers of a core material structure on the facesheet by depositing a slurry comprising a glass powder material onto the core material structure, and fusing the glass powder material to the core material structure,
wherein a composite layer of the core material structure has a uniform thickness and is formed by:
depositing a first slurry comprising a first glass powder material onto only a portion of the core material structure, drying the first slurry, and heating the first glass powder material to form a first portion of the composite layer comprising a first glass material fused to the core material structure; and
after drying and heating the first glass powder material, depositing a second slurry comprising a second glass powder material different from the first glass powder material onto a remaining portion of the core material structure, drying the second slurry, and heating the second glass powder material to form a second portion of the composite layer comprising a second glass material fused to the core material structure to complete the composite layer so that the composite layer has different sets of material properties within itself as a function of location within the composite layer.
2. The method of claim 1 , wherein the first and second slurries are deposited by extruding the first and second slurries from an extruder.
3. The method of claim 1 , wherein the first and second slurries are fused by exposing the slurries to laser radiation.
4. The method of claim 1 , wherein the facesheet is contoured for optical properties.
5. The method of claim 1 , wherein following formation of the core material structure, the core material structure comprises a three-dimensional geometric topology.
6. The method of claim 1 , wherein the first slurry comprises the first glass powder material suspended in a liquid gel, and wherein the second slurry comprises the second glass powder material suspended in a liquid gel.
7. The method of claim 1 , further comprising mechanically abrading the composite layer prior to forming a further layer of the core material structure.
8. The method of claim 1 , wherein at least one optical property of the first glass powder material is different from the second glass powder material.