Three-dimensional printing device
AssigneesXYZprinting, Inc., Kinpo Electronics, Inc.
InventorsWei-Hua Lee, Yu-Hsien Syu
Life of this patent
Estimating the term…
Abstract
The disclosure provides a three-dimensional (3D) printing device including a tank, a forming stage and an irradiation unit. The tank is filled with a liquid forming material. The forming stage is movably disposed at the tank. The irradiation unit is disposed beside the tank and includes an image source and a projecting lens. The image source is used to emit an image beam. The image beam passes through the projecting lens to irradiate and cure the liquid forming material. An entrance pupil position of the projecting lens is ENP and 2000 mm≤ENP≤15000 mm. An exit pupil position of the projecting lens is EXP and 2000 mm≤|EXP|≤15000 mm.
Claims9
A three-dimensional printing device comprising:
- a tank, filled with a liquid forming material;
- a forming stage, movably disposed in the tank;
- and
- an irradiation unit, disposed beside the tank and comprising:
- an image source for emitting an image beam;
- and
- a projecting lens, through which the image beam passes to irradiate and cure the liquid forming material, wherein the projecting lens has an optical axis and comprises a plurality of lenses in sequence from an object side to an image side, each of the lenses having an object side surface facing the object side and an image side surface facing the image side, the projecting lens has an entrance pupil, an entrance pupil position of the projecting lens is ENP and refers to a distance from an intersection point of the image side surface of a first lens of the plurality of lenses of the projecting lens counted from the image side and the optical axis to an intersection point of a plane where the entrance pupil is located and the optical axis, and 2000 mm≤ENP≤15000 mm;
- and the projecting lens has an exit pupil, an exit pupil position of the projecting lens is EXP and refers to a distance from an intersection point of the object side surface of a first lens of the plurality of lenses of the projecting lens counted from the object side and the optical axis to an intersection point of a plane where the exit pupil is located and the optical axis, and 2000 mm≤|EXP|≤15000 mm.
Dependencies are inferred from the claim text.