His father, Adam Luycx, was a silk cloth merchant and his mother was Johanna (or Joanna) de Rasieres.

[3] In 1635, Luycx was in Rome where he was able to establish contacts with the higher clerical circles and likely also with the Austrian branch of the House of Habsburg.

[4] His contacts with the Imperial family may also have been facilitated by his brother Gerhard who was a courtier at the Viennese court holding the position of 'bohmischer Kammerrat'.

His younger brother Antonius was a high-ranking cleric at St. Stephen's Cathedral in Vienna as well as the teacher of Archduchess Mariana of Austria.

[4] Luycx also had contacts with the court of the Polish–Lithuanian Commonwealth monarch, Władysław IV Vasa starting from 1637, as is confirmed in accounts preserved in Stockholm (his name being spelled as Luix).

[6] Among the Polish court commissions are portraits of Władysław IV and his wife Cecilia Renata of Austria (Wilanów Palace in Warsaw, Museum of Art in Łódź, Kunsthistorisches Museum in Vienna and Alte Pinakothek in Munich)[7] and a portrait of King Władysław the Elbow-high, probably one from a cycle, lost during World War II (Gemäldegalerie Alte Meister in Dresden).

[citation needed] After the death of Emperor Ferdinand III, Luyckx was confirmed in his status as court painter.

[10] He established his reputation with his numerous portraits of the royal families and members of the courts of the Habsburgs, particularly in Vienna.

Luyckx used poses similar to those of Velázquez in some of his paintings; This is evidenced in the seven portraits by his hand in the Museo del Prado.