An aperture module of an optical assembly, comprising:
- a first liquid crystal (LC) aperture unit including:
- a first LC layer having a first light permeable region and a first switch region that is arranged around the first light permeable region, wherein a transmittance of the first light permeable region is greater than or equal to a transmittance of the first switch region;
- and
- two first transparent electrode layers respectively disposed on two opposite sides of the first LC layer, wherein an inner side of at least one of the two first transparent electrode layers surroundingly defines a first opening that corresponds in position to the first light permeable region;
- a second LC aperture unit including:
- a second LC layer having a second light permeable region and a second switch region that is arranged around the second light permeable region, wherein a transmittance of the second light permeable region is greater than or equal to a transmittance of the second switch region;
- and
- two second transparent electrode layers respectively disposed on two opposite sides of the second LC layer, wherein an inner side of at least one of the two second transparent electrode layers surroundingly defines a second opening that corresponds in position to the second light permeable region, and wherein an inner diameter of the first opening is different from an inner diameter of the second opening, and a central axis of the first opening is overlapped with a central axis of the second opening,
- wherein the two first transparent electrode layers and the two second transparent electrode layers are configured to electrically couple to a controlling unit so as to control each of the first switch region and the second switch region to be selectively at a light permeable state and a light shield state, and wherein the transmittance of any one of the first switch region and the second switch region at the light shield state is less than that at the light permeable state;
- wherein the first LC layer includes:
- two first orientation layers, wherein the two first transparent electrode layers are respectively disposed on outer surfaces of the two first orientation layers that are distant from each other;
- an outer ring-shaped adhesive connected to inner surfaces of the two first orientation layers;
- and
- an inner ring-shaped adhesive arranged at an inner side of the outer ring-shaped adhesive and connected to the inner surfaces of the two first orientation layers, wherein the outer ring-shaped adhesive, the inner ring-shape adhesive, and the two first orientation layers jointly define a first enclosed space, and wherein the inner ring-shaped adhesive corresponds in position to the inner side of each of the two first transparent electrode layers;
- and
- a first LC group filled in the enclosed space.