Image sensor module
An image sensor module including a base, an image sensing unit, a filter, and at least an exhaust unit is disclosed. The base has a first binding plate which is opposite to a second binding plate, and a space, wherein both of the first and the second binding plates are vertical to an optical axis. The image sensor unit and the filter respectively bind to the first and the second binding plates. The exhaust unit binding to the second plate has a first exhaust entrance connecting to the space, an exhaust outlet connecting to the outside, and an exhaust path connecting to the first exhaust entrance.
1. An image sensor module comprising:
a base having a first binding plate which is vertical to an optical axis, a second binding plate which is opposite to the first binding plate, and a space connecting the first and the second binding plates, disposed along the optical axis;
an image sensing unit binding to the first binding plate;
a filter binding to the second binding plate; and
at least one exhaust unit binding to the second binding plate of the base having a first exhaust entrance connected to the space, an exhaust outlet connected to the outside, an exhaust path tortuously connected to the first exhaust entrance and the exhaust outlet on a plane parallel to the second binding plate;
wherein the exhaust path is in a direction perpendicular to the optical axis.
2. The image sensor module as claimed in claim 1 , wherein the exhaust path has a first entrance part connected to the first exhaust entrance, a first turning part tortuously connected to the first entrance part, and an exhaust exit part tortuously connected to the first turning part.
3. The image sensor module as claimed in claim 2 , wherein the exhaust unit further comprises a second exhaust entrance connected to the space, and the exhaust path further has a second entrance part connected to the second exhaust entrance, and a second turning part tortuously extended from the second entrance part to the exhaust exit part, wherein the second entrance part and the second turning part are symmetrical respectively to the first entrance part and the first turning part.
4. The image sensor module as claimed in claim 3 , wherein the exhaust unit further comprises a stopper formed by the first and the second turning parts and the first and the second entrance parts.
5. The image sensor module as claimed in claim 1 , wherein the transection of the exhaust path is long and narrow.
6. The image sensor module as claimed in claim 5 , wherein the width of the gap along the optical axis in the exhaust path is equal to or smaller than 0.05 mm.
7. The image sensor module as claimed in claim 6 , wherein the width of the gap along the optical axis in the exhaust path is between 0.02 mm and 0.03 mm.