Optical system
An optical system is provided, including a first optical module and a second optical module. The first optical module is used for changing the direction of light emitted from a light source. The second optical module corresponds to the first optical module and is used for changing the direction of the light. The direction of the light exit the first optical module is different from the direction of the light exit the second optical module.
1 . An optical system, comprising:
a first optical module used for changing the direction of light emitted from a light source;
a second optical module corresponding to the first optical module and used for changing the direction of the light, wherein the direction of the light exit the first optical module is different from the direction of the light exit the second optical module, and the second optical module is disposed immediately downstream of the first optical module, wherein the second optical module comprises:
a fixed portion;
a movable portion being movable relative to the fixed portion;
a driving assembly, comprising:
a first driving portion disposed on one side of the fixed portion and the movable portion, and comprises a first magnetic element; and
a second driving portion disposed on another side of the fixed portion and the movable portion, and comprises a second magnetic element; and
a support assembly, comprising an intermediate element passing through the first magnetic element and the second magnetic element;
a third optical module used for adjusting the light; and
a fourth optical module used for changing the direction of the light,
wherein the light passes through each of the third optical module, the fourth optical module, the first optical module, and the second optical module exactly once in sequence, and then exits from the optical system.
2 . The optical system as claimed in claim 1 , wherein a center of the light source, a center of the first optical module, and a center of the second optical module are in an identical plane.
3 . The optical system as claimed in claim 2 , wherein:
the first optical module comprises a first optical element rotatable relative to a first axis;
the second optical module further comprises a second optical element rotatable relative to a second axis, wherein the intermediate element extends along the second axis;
the first axis and the second axis are not parallel.
4 . The optical system as claimed in claim 3 , wherein one of the first axis and the second axis is perpendicular to the plane.
5 . The optical system as claimed in claim 4 , wherein another one of the first axis and the second axis is parallel to the plane.
6 . The optical system as claimed in claim 5 , wherein:
the light passes through the first optical module and the second optical module in sequence, and the first axis is parallel to the plane;
the first axis and the second axis are perpendicular;
the third optical module is in the plane.
7 . The optical system as claimed in claim 6 , wherein:
the fourth optical module is in the plane.
8 . The optical system as claimed in claim 1 , wherein:
the light passes to the first optical module through a first path, and exits the first optical module through a second path;
an angle between the first path and the second path is not 90 degrees.
9 . The optical system as claimed in claim 8 , wherein the angle between the first path and the second path is less than 90 degrees.
10 . The optical system as claimed in claim 9 , wherein the angle between the first path and the second path is greater than 45 degrees.
11 . The optical system as claimed in claim 10 , wherein:
the light reaches the second optical module after exiting from the first optical module, and then exits the second optical module along a third path;
an angle between the second path and the third path is not 90 degrees.
12 . The optical system as claimed in claim 11 , wherein the angle between the second path and the third path is less than 135 degrees.
13 . The optical system as claimed in claim 12 , wherein the angle between the second path and the third path is greater than 90 degrees.
14 . The optical system as claimed in claim 1 , wherein the support assembly further comprises:
a first connecting element disposed on the fixed portion and having a first opening;
a second connecting element disposed on the fixed portion and having a second opening, wherein the intermediate element passes through the first opening and the second opening.
15 . The optical system as claimed in claim 14 , wherein the first connecting element and the second connecting element are disposed between the first driving portion and the second driving portion.
16 . The optical system as claimed in claim 1 , wherein the first driving portion further comprises:
a first magnetic permeable element comprising a first portion and a second portion connected to the first portion, wherein the first portion extends in a first direction; and
a first coil disposed on the first magnetic permeable element, wherein the first coil surrounds the first portion, and the second portion is arc-shaped;
wherein the first magnetic element and the second portion are arranged in a second direction, and the first direction and the second direction are different.
17 . The optical system as claimed in claim 16 , wherein the fixed portion comprises a first accommodating portion and a second accommodating portion, the first coil is disposed in the first accommodating portion, the first magnetic permeable element is disposed in the second accommodating portion, and a depth of the second accommodating portion is less than a depth of the first accommodating portion.