The present invention relates to a retention apparatus comprising



a) a retention body, which delimits an inner region at least on a first side and a further side opposite to the first side, and
b) at least one spring element;

wherein the retention body comprises, on the first side, a first receiving portion facing the inner region and, on the further side, a second receiving portion facing the inner region; wherein the retention apparatus is embodied to retain at least one optical module, which has a light input side and an opposing light output side, by means of the first receiving portion, the second receiving portion, and the at least one spring element in a retention state,

in such a way that the at least one optical module in the retention state is retained

a. in a first direction extending from the light input side to the light output side by means of an interlock of

i. the at least one optical module with the first receiving portion and
ii. the at least one optical module with the second receiving portion, and


b. in the opposite direction to the first direction by means of a spring force of the at least one spring element directed against the at least one optical module.




Further, the invention relates to a luminaire having the retention apparatus according to the invention; a printing machine having the luminaire according to the invention; a production method using the luminaire according to the invention; and uses of the retention apparatus according to the invention; and of the luminaire.