ADDITIVE MANUFACTURING APPARATUS WITH OPTICAL MEANS FOR DIFFUSING/ SCATTERING PROJECTED UV LIGHT TOWARDS PHOTOCURABLE RESIN

Abstract: the present invention relates to an additive manufacturing apparatus for additively manufacturing a component, including: a resin vat unit which includes: a reservoir for storing uv light photocurable resin; and a uv-transparent window at the bottom of the reservoir, the uv-transparent window includes a uv-transparent plate and a uv-transparent anti-adhesive flexible foil; a projection unit for projecting uv light through the uv-transparent window into the reservoir; a movable building platform having a surface onto which the component can be formed through layerwise curing of said resin. the uv-transparent window further includes: an optical means which is adapted to diffuse the projected uv light towards the building platform into a region (r) where the uv light photocurable resin is to be layerwise cured, the optical means is arranged in the light path of the projected uv light.

Inventor(s): Sebastian SAUL, Christoph BRANDES

CPC Classification: B29C64/291 (SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms ; making laminated products by combining previously unconnected layers which become one product whose layers will remain together - ))

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