US 2026/0166808 A1 · Method and Apparatus for Controlling Light Source

Abstract

The present disclosure provides a method and apparatus for controlling a light source. The method includes: obtaining a target projected image, where the target projected image is configured for three-dimensional printing; dividing an area of a selective light-transmitting display into an image projection region and an image non-projection region based on the target projected image; and controlling a first LED unit corresponding to the image projection region to emit light based on a first preset power, and controlling a second LED unit corresponding to the image non-projection region to emit light based on a second preset power, to cause a cumulative exposure energy of the image non-projection region to be less than a critical exposure energy of a photocurable material and cause a cumulative exposure energy of the image projection region to be greater than or equal to the critical exposure energy of the photocurable material.

Claims13

Dependent claims

A method for manufacturing a three-dimensional (3D) printed object, comprising:

providing a selective light-transmitting screen that selectively blocks or transmits light;
providing a light source comprising a plurality of LED units;
forming multiple layers of the 3D printed object, wherein during the formation of a predetermined layer among the multiple layers of the 3D printed object,
controlling a first LED unit among the plurality of LED units to emit light, thereby curing a printing material by light emitted by the first LED unit and passing through a projection region of the selective light-transmitting screen to form the predetermined layer, wherein a cumulative exposure energy applied to the projection region is greater than or equal to a critical exposure energy of the printing material;
and
controlling a second LED unit among the plurality of LED units to emit light, thereby causing light emitted by the second LED unit to pass through a non-projection region of the selective light-transmitting screen, wherein a cumulative exposure energy applied to the non-projection region is less than the critical exposure energy.

3 more elements

Dependencies are inferred from the claim text.

Method and Apparatus for Controlling Light Source

Life of this patent

Method and Apparatus for Controlling Light Source

Life of this patent

Abstract

Claims13