Method for manufacturing passive optical components, and devices comprising the same
A device comprises at least one optics member (O) comprising at least one transparent portion (t) and at least one blocking portion (b). The at least one transparent portion (t) is made of one or more materials substantially transparent for light of at least a specific spectral range, referred to as transparent materials, and the at least one blocking portion (b) is made of one or more materials substantially non-transparent for light of the specific spectral range, referred to as non-transparent materials. The transparent portion (t) comprises at least one passive optical component (L). The at least one passive optical component (L) comprises a transparent element ( 6 ) having two opposing approximately flat surfaces substantially perpendicular to a vertical direction in a distance approximately equal to a thickness of the at least one blocking portion (b) measured along the vertical direction, and, attached to the transparent element ( 6 ), at least one optical structure ( 5 ).
1. A method for manufacturing a device comprising at least one passive optical component, said method comprising:
providing a wafer comprising at least one blocking portion and a multitude of transparent elements;
wherein each of said multitude of transparent elements is made of one or more transparent materials substantially transparent for light of at least a specific spectral range, and said at least one blocking portion is made of one or more non-transparent materials substantially non-transparent for light of said specific spectral range;
wherein one or more of the following applies for the wafer:
(A) a vertical extension of each of said multitude of transparent elements is the same as a vertical extension of said at least one blocking portion;
(B) the at least one blocking portion together with the transparent elements describes a solid plate-like shape with opposing flat surfaces;
(C) the wafer has an extension in a first direction, which is small with respect to the wafer's extension in another two directions that are perpendicular to the first direction, wherein each of the transparent elements has two opposing flat surfaces perpendicular to the first direction, wherein the two opposing flat surfaces are arranged in a distance equal to a thickness of said at least one blocking portion measured along the first direction.
2. The method according to claim 1 comprising:
manufacturing an optics wafer, comprising a multitude of passive optical components including said at least one passive optical component;
wherein manufacturing a wafer comprises:
producing said multitude of passive optical components by producing on each of said multitude of transparent elements at least one optical structure.
3. The method according to claim 2 , wherein said at least one optical structure comprises at least one lens element.
4. The method according to claim 2 , said producing said multitude of optical structures is carried out using replication.
5. The method according to claim 4 , wherein said producing said optical structures using replication comprises:
applying a replication material to each of said multitude of transparent elements;
replicating a structured surface in said replication material;
hardening said replication material;
removing said structured surface.
6. The method according to claim 2 comprising:
preparing a wafer stack comprising said optics wafer and at least one additional wafer;
obtaining a multitude of separate modules each comprising at least one of said multitude of passive optical components, by separating said wafer stack.
7. The method according to claim 1 comprising:
manufacturing said wafer;
wherein manufacturing the wafer comprises:
providing a precursor wafer substantially made of said non-transparent material having openings in places where said transparent elements are supposed to be located;
at least partially filling said openings with at least one of said transparent materials.
8. The method according to claim 7 , wherein at least partially filling said openings with at least one of said transparent materials is carried out using a dispenser.
9. The method according to claim 7 comprising manufacturing said precursor wafer using replication.
10. The method according to claim 1 , wherein each of the transparent elements has two opposing flat surfaces perpendicular to the first direction.