Spherical lens and optoelectronic module comprising the same
View Patent ↗A spherical lens (K) for an optoelectronic module has a plane surface that is provided with a solderable metal coating (M). The spherical lens (K) is soldered by means of its plane, metallized surface (M) onto a solder pad (P) applied to the substrate (T).
1. An optoelectronic module, comprising:
a substrate, one or more optoelectronic components disposed on the substrate, and a solder pad on the substrate; and
a lens, wherein the lens is substantially spherical and has a plane surface provided with a metal coating, and wherein the metal coating of the lens is soldered onto the solder pad.
2. An optoelectronic module according to claim 1 , wherein the substrate comprises crystalline silicon.
3. An optoelectronic module according to claim 1 , wherein the lens is positioned in a recess in the substrate.
4. An optoelectronic module according to claim 1 , wherein said lens is self aligned on said substrate.
5. A method for mounting a lens on a substrate containing a solder pad, comprising:
introducing a plane surface on the lens, wherein the lens is substantially spherical,
metallizing the plane surface with a solderable metal coating to form a plane metallized surface, and
soldering the plane metallized surface onto the solder pad.
6. The method according to claim 5 , wherein metallizing is performed by sputtering.
7. The method according to claim 5 , wherein metallizing is performed by vapor deposition.
8. The method according to claim 5 , further comprising reinforcing said metallizing by electroplating.
9. The method according to claim 5 , wherein the plane surface is introduced by grinding.