US 12,311,622 B2
Method of final assembly of a light projector module
Joerg Reitterer, Brunn Am Gebirge (AT); Louahab Noui, East Sussex (GB); and Michael Schoeffmann, Baden (AT)
Assigned to TriLite Technologies GmbH, Vienna (AT)
Filed by TriLite Technologies GmbH, Vienna (AT)
Filed on May 18, 2022, as Appl. No. 17/747,570.
Claims priority of application No. 21175032 (EP), filed on May 20, 2021.
Prior Publication US 2023/0001654 A1, Jan. 5, 2023
Int. Cl. B29D 11/00 (2006.01); G02B 7/02 (2021.01); G02B 26/08 (2006.01); G02B 27/01 (2006.01); H04N 9/31 (2006.01)
CPC B29D 11/00807 (2013.01) [G02B 7/025 (2013.01); G02B 26/0833 (2013.01); G02B 27/0172 (2013.01); G02B 27/0179 (2013.01); H04N 9/3152 (2013.01); G02B 2027/0178 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of final assembly of a light projector module which comprises a base plate with two opposite sides, a light source mounted on the base plate for emitting at least one light beam, a micro-electro-mechanical-system (MEMS) scanning assembly mounted on the base plate at a distance from the light source for scanning the at least one light beam over a display area, and a set of one or more lenses mounted on the base plate, the method of final assembly comprising steps of:
firstly, providing the base plate mounted thereon, the light source and the MEMS scanning assembly, wherein the base plate has, between the light source and the MEMS scanning assembly, a mounting surface accessible at one side of the base plate;
secondly, positioning the set of one or more lenses on the mounting surface and, after the positioning, adjusting the position of the one or more lenses of the set, wherein the at least one light beam is emitted by the light source, deflected by the MEMS scanning assembly and monitored in the display area during said adjusting; and lastly
mounting the one or more lenses of the set in the adjusted position fixedly on the mounting surface of the base plate to finalize the assembly of the light projector module.