Optical system
An optical system is provided, including a first movable part for connecting an optical element; a first base, wherein the first movable part is movable relative to the first base; and a first driving assembly for driving the movable part to move relative to the first base. The optical system further includes a light quantity control mechanism for controlling the quantity of light entering the optical element. The light quantity control mechanism further includes a base seat and a light quantity control assembly at least partially movable relative to the base seat. The optical system further includes a second driving assembly for controlling the light quantity control assembly.
1 . An optical system, comprising:
a first movable part, configured to connecting an optical element;
a first base, wherein the first movable part is movable relative to the first base;
a first driving assembly, for driving the first movable part relative to the first base to move; and
an elastic assembly, the first movable part is movably connected to the first base via the elastic assembly;
wherein the optical system further comprises a light quantity control mechanism for controlling the light quantity of light entering the optical element;
wherein the light quantity control mechanism further comprises a base seat and a light quantity control assembly which is at least partially movable relative to the base seat;
wherein the optical system further comprises a second driving assembly for controlling the light quantity control assembly;
wherein the elastic assembly comprises:
a first elastic element, wherein the base seat is movably connected to the first base via the first elastic element;
a second elastic element, wherein the first movable part is movably connected to the first base via the second elastic element;
a third elastic element, wherein the first movable part is movably connected to the first base via the third elastic element; and
a fourth elastic element, wherein the first base is movably connected to the second base via the fourth elastic element;
wherein the second driving assembly is electrically connected to the second elastic element; and
wherein the first driving assembly is electrically connected to the third elastic element.
2 . The optical system as claimed in claim 1 , further comprising:
a second base, the second base is movable relative to the first base; and
a third driving assembly, for driving the first base to move relative to the second base;
wherein the first driving assembly is configured to drive the first movable part to move in a first dimension relative to the first base;
the third driving assembly is configured to drive the first base to move in a second dimension relative to the second base;
the base seat is movable relative to the second base; and
the base seat is movable relative to the first base.
3 . The optical system as claimed in claim 2 ,
wherein the base seat is movable relative to the second base via the elastic assembly; and
wherein the base seat is movable relative to the first base via the elastic assembly.
4 . The optical system as claimed in claim 1 , wherein:
the first elastic element has a plate-shaped structure;
the second elastic element has a plate-shaped structure;
the third elastic element has a plate-shaped structure;
the fourth elastic element has a plate-shaped structure;
the first and second elastic elements are parallel to each other;
the first and third elastic elements are parallel to each other;
the first and fourth elastic elements are parallel to each other;
the second and third elastic elements are parallel to each other;
the second and fourth elastic elements are parallel to each other; and
the third and fourth elastic elements are parallel to each other.
5 . The optical system as claimed in claim 1 , wherein when viewed along a direction perpendicular to the main axis, the second elastic element is located between the first and third elastic elements.
6 . The optical system as claimed in claim 1 , wherein when viewed along a direction perpendicular to the main axis, the third elastic element is located between the second and fourth elastic elements.
7 . The optical system as claimed in claim 2 , further comprising:
a housing, arranged along a main axis direction with the first base; and
a frame, arranged along the main axis with the second base,
wherein the frame is located in the housing.
8 . The optical system as claimed in claim 7 , wherein the first elastic element is located above the frame, and the first elastic element connects the base seat and an inner surface of the housing.
9 . The optical system as claimed in claim 8 , wherein in a direction perpendicular to an optical axis, a connecting portion of the first elastic element connected to the inner surface of the housing does not overlap with the frame.
10 . The optical system as claimed in claim 1 , wherein the second driving assembly is electrically connected to the fourth elastic element via the second elastic element; and
wherein the first driving assembly is electrically connected to the fourth elastic element via the third elastic element.
11 . The optical system as claimed in claim 1 , wherein the second driving assembly is electrically connected to the fourth elastic element via the second elastic element and a first circuit assembly of the first base;
wherein the first circuit assembly is at least partially embedded in the first base and not exposed on the first base;
wherein the first driving assembly is electrically connected to the fourth elastic element via the third elastic element and the first circuit assembly; and
wherein the first circuit assembly has a protruding portion exposed on the first base, and the protruding portion extends along the main axis direction.
12 . The optical system as claimed in claim 11 , wherein the second driving assembly has a second control unit which is electrically connected to a first control unit of the first driving assembly via the first circuit assembly; and
wherein the first driving assembly has a first coil which is electrically connected to the first control unit.
13 . The optical system as claimed in claim 12 , wherein the first control unit is configured to output a first driving power to control the first coil;
wherein the second driving assembly has a second coil which is electrically connected to the second control unit; and
wherein the second control unit is configured to output a second driving power to control the second coil.
14 . The optical system as claimed in claim 13 , further comprising a second circuit assembly, wherein at least a part of the second circuit assembly is embedded in the base seat, and at least a part of the second circuit assembly is exposed outside the base seat.
15 . The optical system as claimed in claim 14 , wherein the second circuit assembly has a plurality of upper exposed parts; and
wherein four different quadrants are defined by a center of the base seat, and the upper exposed parts are located in the four different quadrants respectively.
16 . The optical system as claimed in claim 1 , wherein the first base has a first abutment surface and a first inclined surface;
wherein the first movable part has a second abutment surface and a second inclined surface;
wherein the first and second inclined surfaces are inclined with respect to the first and second abutment surfaces; and
wherein when viewed along a normal direction of the first abutment surface, the first abutment surface does not overlap with the second inclined surface.
17 . The optical system as claimed in claim 16 , wherein the first abutment surface corresponds to the second abutment surface, and the first inclined surface corresponds to the second inclined surface.
18 . The optical system as claimed in claim 16 , wherein the first abutment surface is configured to limit the second abutment surface; and
wherein the first inclined surface is configured to limit the second inclined surface.