# US 10,308,006 B2 · Method for calibrating a light of a three-dimensional object generating apparatus

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- Number: US 10,308,006 B2
- Document ID: US10308006B2
- Status: Granted
- Kind: B2
- Application number: 15/070,102
- Filed: 2016-03-15
- Published: 2017-04-13
- Granted: 2019-06-04
- Earliest claimed: 2015-10-13
- Assignees: XYZprinting, Inc.; Kinpo Electronics, Inc.
- Applicants: Xyzprinting, Inc.; Kinpo Electronics, Inc.
- Inventors: Ching-Yuan Chou; Min-Hsiung Ding
- Web page: https://patentgrep.com/patent/US10308006B2

## CPC

- B29C 64/135: the energy source being concentrated, e.g. scanning lasers or focused light sources
- B29C 64/393: for controlling or regulating additive manufacturing processes
- B33Y 10/00: Processes of additive manufacturing
- B33Y 50/02: for controlling or regulating additive manufacturing processes
- B29C: 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 B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING

## Abstract

A method for calibrating light is adapted to a 3D object generating apparatus including a housing, an optical-transparent component, and a laser light generator. The housing has an accommodating space and an opening communicating with the accommodating space. The optical transparent component is arranged on the opening, and the laser light generator is arranged within the accommodating space. The method includes the following steps: providing a first photodetector and a controller, the controller is electrically connected to the first photodetector and the laser light generator; using the controller to drive the laser light generator to generate the light and perform a scanning procedure; and stopping the scanning procedure when the first photodetector detects the light generated by the laser light generator, and then performing a 3D object generating procedure in the working region by moving the laser light generator with a preset distance.

## Claims

### Claim 1

A method for calibrating a light of a three-dimensional (3D) object generating apparatus adapted to a 3D object generating apparatus comprising a housing, an optical-transparent component, and a laser light generator, the housing comprising an accommodating space and an opening communicating with the accommodating space, the optical-transparent component arranged on the opening, the laser light generator is arranged on one side of the optical-transparent component and located within the accommodating space, and is used for curing a fluid medium arranged on the other side of the optical-transparent component and in a working region, the method comprising:
providing a first photodetector and a controller, wherein the controller is electrically connected to the first photodetector and the laser light generator;
using the controller to drive the laser light generator to generate the light and perform a scanning procedure; and
stopping the scanning procedure when the first photodetector detects the light generated by the laser light generator, wherein the first photodetector is arranged corresponding to a first light calibration region adjacent to the working region, and then performing a 3D object generating procedure in the working region by moving the laser light generator toward the working region with a preset distance;
wherein the first photodetector and the laser light generator are arranged at the same side of the optical-transparent component;
wherein the preset distance is equal to or larger than a distance between a central axis of the first photodetector and an interface between the first light calibration region and the working region.

### Claim 2 (depends on 1)

The method in claim 1, wherein the first photodetector comprising a detecting surface is arranged in the first light calibration region, and the detecting surface faces a light emitting surface of the laser light generator.

### Claim 3 (depends on 2)

The method in claim 2, wherein the first calibrating region and the working region are arranged in a first axis, the preset distance is equal to or larger than a distance between the central axis of the first photodetector and the working region in the first axis.

### Claim 4 (depends on 3)

The method in claim 3, wherein the scanning procedure is performed in the first calibrating region.

### Claim 5 (depends on 1)

The method in claim 1, wherein the first photodetector is arranged on the housing.