Jacques Dinet (1584-1653) was a French Jesuit, confessor to Louis XIII and an associate of René Descartes.
Later, Descartes found him sympathetic enough to use as a sounding board, and potential intermediary with Pierre Bourdin, another Jesuit and critic of the Dioptrics.
A letter to Dinet in 1642 attacked both Bourdin and Gisbertus Voetius, an opponent at the University of Utrecht.
[3][4] In 1643 Dinet took over from Jacques Sirmond the position of confessor to the dying Louis XIII.
[1] His account of the death of Louis XIII was later edited for publication by Antoine Girard, appearing as L'Idée d'une belle mort (1656).