Lens module
Disclosed herein is a lense module. A lens module according to an exemplary embodiment of the present disclosure includes a substrate having a plurality of light emitting regions, a light emitting devices provided in each of the plurality of light emitting regions to emit light, and a lens unit provided on the substrate to cover the light emitting devices, a glue contacting the substrate and the lens unit to secure the substrate and the lens unit, and a support member provided in the glue and mounted on the substrate. The support member includes a hump for increasing a contact area between the support member and the glue, and a clip connected to the lens unit.
1. A lens module, comprising:
a substrate having a plurality of light emitting regions;
a light emitting device provided in each of the plurality of light emitting regions and configured to emit light;
a lens unit provided on the substrate to cover the light emitting device;
a glue portion disposed to contact the substrate and the lens unit and configured to secure the substrate and the lens unit; and
a support member provided in the glue portion, and mounted on the substrate,
wherein the support member includes a hump that increases a contact area between the support member and the glue portion, and a clip connected to the lens unit.
2. The lens module of claim 1 ,
wherein the support member further comprises a metal sheet, a clip holder for supporting the clip, and a pad mounted on the substrate.
3. The lens module of claim 2 , wherein:
the clip holder has elasticity such that a shape thereof is deformed when an external force in a Z-axis direction perpendicular to the substrate is applied, and
the shape of the clip holder is deformed such that the clip and an end of the lens unit are fastened, and thereafter, when the clip and the lens unit are engaged, the deformed shape of the clip holder is restored.
4. The lens module of claim 3 , wherein:
The shape of the clip holder is configured to correspond to a shape of the end of the lens unit, or
a length of the clip holder is configured to have a length corresponding to a predetermined third ratio to a thickness of the end of the lens unit.
5. The lens module of claim 2 , wherein:
the clip has elasticity such that a shape of the clip is deformed when an external force in a Z-axis direction perpendicular to the substrate is applied, and
the shape of the clip is deformed such that the support member secures the lens unit, and thereafter, when the lens unit is secured, the deformed shape of the clip holder is restored.
6. The lens module of claim 5 , wherein:
the shape of the clip is configured to correspond to the shape of an end of the lens unit, or
a distance between the clip and the substrate is configured in a predetermined fourth ratio with respect to a thickness of the end of the lens unit.
7. The lens module of claim 1 , wherein a hole is provided in the hump.
8. The lens module of claim 1 , wherein:
the hump has a length corresponding to a predetermined first ratio to a length of the support member in contact with the substrate, or
the hump has a length corresponding to a predetermined second ratio to a thickness of the glue portion.
9. The lens module of claim 1 , comprising:
a plurality of support members of different types from one another determined in consideration of shapes of the substrate, the lens unit, and the glue portion.
10. The lens module of claim 9 , wherein the plurality of support members comprises at least two support members among:
a first support member including a first hump having a first length and including a hole;
a second support member including a second hump having the first length and not including the hole;
a third support member including a third hump having a second length shorter than the first length and including the hole; and
a fourth support member including a fourth hump having the second length and not including the hole.
11. The lens module of claim 1 , wherein the substrate includes a terminal for providing power to the light emitting device.
12. The lens module of claim 1 , wherein the light emitting device includes a first conductivity type semiconductor layer, a second conductivity type semiconductor layer, and an active layer disposed between the first conductivity type semiconductor layer and the second conductivity type semiconductor layer.
13. The lens module of claim 1 , wherein the lens unit includes a lens having a curved surface and a flat portion disposed around the lens.
14. The lens module of claim 1 , wherein the lens unit includes a lens including quartz or a polymer organic material.
15. The lens module of claim 1 , wherein the glue portion includes at least one of an acrylic glue, a silicone glue, a urethane glue, a polyvinyl butyral glue (PMB), an ethylene-vinyl acetate glue (EVA), polyvinylether, saturated amorphous polyester, or melamine resin.