Title:
SYSTEM FOR DETERMINING A DISTANCE TO AN OBJECT
Document Type and Number:
WIPO Patent Application WO/2018/065428
Kind Code:
A3
Abstract:
The invention pertains to a system for determining a distance, comprising: a light source for projecting a pattern of discrete spots of laser light towards the object in a sequence of pulses; a detector comprising picture elements, for detecting light representing the pattern as reflected by the object in synchronization with the sequence of pulses; and processing means to calculate the distance to the object as a function of exposure values generated by said picture elements. The picture elements generate exposure values by accumulating a first amount of electrical charge representing a first amount of light reflected during a first time window and a second electrical charge representating a second amount of light reflected during a second time window. The solid-state radiation source emits substantially monochromatic light having a wavelength spread of less than ±20 nm and the detector is equipped with a corresponding narrow bandpass filter.
Inventors:
PAESEN RIK (BE)
VAN DYCK DIRK (BE)
VAN DYCK DIRK (BE)
Application Number:
PCT/EP2017/075095
Publication Date:
May 17, 2018
Filing Date:
October 03, 2017
Export Citation:
Assignee:
XENOMATIX NV (BE)
International Classes:
G01S7/481; G01S7/4863; G01S7/4865; G01S17/10; G01S17/894; G01S17/931
Domestic Patent References:
| WO2015004213A1 | 2015-01-15 |
Foreign References:
| US20130148102A1 | 2013-06-13 | |||
| US20070177841A1 | 2007-08-02 | |||
| US20070177011A1 | 2007-08-02 | |||
| US20150260830A1 | 2015-09-17 | |||
| US20100231891A1 | 2010-09-16 | |||
| US8742325B1 | 2014-06-03 | |||
| EP3045936A1 | 2016-07-20 |
Other References:
MICHAEL C Y HUANG ET AL: "Monolithic Integrated Piezoelectric MEMS-Tunable VCSEL", IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 13, no. 2, 1 March 2007 (2007-03-01), pages 374 - 380, XP011179412, ISSN: 1077-260X, DOI: 10.1109/JSTQE.2007.894056
ANONYMOUS: "Laser linewidth - Wikipedia, the free encyclopedia", 14 November 2011 (2011-11-14), XP055426729, Retrieved from the Internet [retrieved on 20171120]
ANONYMOUS: "Laser linewidth - Wikipedia, the free encyclopedia", 14 November 2011 (2011-11-14), XP055426729, Retrieved from the Internet
Attorney, Agent or Firm:
IPLODGE BVBA (BE)
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