Title:
OPTICAL SENSING TECHNIQUES FOR CALIBRATION OF AN ADDITIVE FABRICATION DEVICE AND RELATED SYSTEMS AND METHODS
Document Type and Number:
WIPO Patent Application WO/2019/139561
Kind Code:
A1
Abstract:
Techniques of optically sensing fiducial targets, such as calibration patterns, within an additive fabrication device are provided. In some embodiments, fiducial targets may be disposed on a structure configured to contact source material of the additive fabrication device, the source material being a material from which the device is configured to fabricate solid objects. Indirect sensing means may be employed such that light emitted from a light source of the additive fabrication device scatters from the surface of a fiducial target. At least some of this scattered light can be measured by a sensor and used to determine a position of the fiducial target. In some embodiments, the fiducial target may be configured to move relative to the light source and/or sensor to provide additional information on the target's position via the light scattered from its surface.
Inventors:
FRANTZDALE BENJAMIN (US)
KEENAN JUSTIN (US)
KEENAN JUSTIN (US)
Application Number:
PCT/US2018/012927
Publication Date:
July 18, 2019
Filing Date:
January 09, 2018
Export Citation:
Assignee:
FORMLABS INC (US)
International Classes:
E21B47/00; E21B47/10; G01D5/353
Foreign References:
| US20160023403A1 | 2016-01-28 | |||
| US20060111807A1 | 2006-05-25 | |||
| US20170368747A1 | 2017-12-28 | |||
| US20170239752A1 | 2017-08-24 |
Other References:
XIE, LIPS: A LIGHT INTENSITY BASED POSITIONING SYSTEM FOR INDOOR ENVIRONMENTS, 7 March 2014 (2014-03-07), pages 1 - 14, XP055626366, Retrieved from the Internet [retrieved on 20180301]
See also references of EP 3737832A4
See also references of EP 3737832A4
Attorney, Agent or Firm:
ATTISHA, Michael, J. (US)
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