Patent ID: 11865783
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Other special machines (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A three-dimensional printer, comprising:
a vat having a transparent bottom, the vat configured to contain a photo-polymerizing resin;
a lift plate movably positioned within the vat; and
an optical device configured to project a pattern of light through the transparent bottom, the optical device comprising:
a light source having a light source output, the light source configured to provide light at the light source output;
a light integrator having a light integrator input and a light integrator output, the light integrator input optically coupled to the light source output, and the light integrator configured to provide divergent light at the light integrator output responsive to the light at the light source output;
projection optics having an optics input and an optics output, the projection optics configured to project projection output light at the optics output through the transparent bottom responsive to a modulated light at the optics input; and
a spatial light modulator optically coupled between the light integrator output and the optics input of the spatial light modulator, the spatial light modulator configured to provide the modulated light responsive to the divergent light.