Aperture unit
An aperture unit having an optical axis is provided, which includes a fixed portion having a first surface and including a protrusion formed on the first surface, a guiding element movably connected to the fixed portion and including a through hole, a first blade movably connected to the guiding element and the fixed portion, and a driving assembly use for driving the guiding element to move for moving the first blade. The optical axis passes through the through hole. The first surface has a first accommodating space having a recessed structure to accommodate the guiding element, and the protrusion extends toward the first blade.
1 . An aperture unit having an optical axis, comprising:
a fixed portion having a first surface and comprising a protrusion formed on the first surface;
a guiding element movably connected to the fixed portion and comprising a through hole, wherein the optical axis passes through the through hole;
a first blade movably connected to the guiding element and the fixed portion; and
a driving assembly use for driving the guiding element to move for moving the first blade;
wherein the first surface has a first accommodating space having a recessed structure to accommodate the guiding element, and the protrusion extends toward the first blade.
2 . The aperture unit as claimed in claim 1 , wherein the protrusion passes through the first blade.
3 . The aperture unit as claimed in claim 1 , wherein the guiding element comprises a first column extending in a direction parallel to the optical axis and passes through the first blade.
4 . The aperture unit as claimed in claim 1 , further comprising a second blade movably connected to the guiding element and the fixed portion and overlapping the first blade.
5 . The aperture unit as claimed in claim 4 , wherein the guiding element comprises a second column extending in a direction parallel to the optical axis and passes through the second blade.
6 . The aperture unit as claimed in claim 1 , further comprising a second blade movably connected to the guiding element and the fixed portion, wherein the fixed portion further comprises a positioning column extending along the optical axis, and the positioning column does not overlap the first blade and the second blade when viewed along the optical axis.
7 . The aperture unit as claimed in claim 6 , wherein the positioning column is formed from the first surface.
8 . The aperture unit as claimed in claim 6 , wherein the positioning column is exposed from the fixed portion when viewed along the optical axis.
9 . The aperture unit as claimed in claim 1 , wherein the first blade includes a first trench and a second trench, and the first trench and the second trench extend in different directions.
10 . The aperture unit as claimed in claim 9 , wherein the first trench is perpendicular to the second trench.
11 . The aperture unit as claimed in claim 9 , wherein the protrusion is disposed in the first trench.
12 . The aperture unit as claimed in claim 11 , wherein the fixed portion further comprises another protrusion formed on the first surface and disposed in the first trench.
13 . The aperture unit as claimed in claim 9 , further comprising a second blade movably connected to the guiding element and the fixed portion, wherein the second blade includes a third trench and a fourth trench, and the third trench and the fourth trench extend in an identical direction.
14 . The aperture unit as claimed in claim 13 , wherein the first trench and the third trench extend in an identical direction.
15 . The aperture unit as claimed in claim 1 , wherein the driving assembly comprises a driving substrate, wherein the fixed portion comprises an opening, and the driving substrate extends beyond the fixed portion though the opening when viewed along the optical axis.
16 . The aperture unit as claimed in claim 15 , wherein the guiding element at least partially overlaps the driving substrate when viewed along the optical axis.
17 . The aperture unit as claimed in claim 15 , wherein the driving substrate is disposed in the first accommodating space.
18 . The aperture unit as claimed in claim 15 , wherein the driving assembly further comprises a magnetic element disposed in the accommodating space and overlapping the driving substrate.
19 . The aperture unit as claimed in claim 18 , wherein the magnetic element comprises a plurality of first magnetic poles and second magnetic poles staggered arranged with each other.
20 . The aperture unit as claimed in claim 1 , wherein the protrusion does not expose from the fixed portion when viewed along the optical axis.