Optical system

Patent metadata

Field	Value
Publication number	US-2022011555-A1
Application number	US-202117370339-A
Country	US
Kind code	A1
Filing date	Jul 8, 2021
Priority date	Jul 10, 2020
Publication date	Jan 13, 2022
Grant date	—

Abstract

An optical system for receiving rays of light is provided in the present disclosure, including a first optical module. The first optical module includes a first optical element and a first optical path-adjusting element. The first optical element has a first optical axis. The rays of light pass through the first optical element in a first direction. The first optical path-adjusting element corresponds to the first optical element. The rays of light are redirected to a second direction by the first optical path-adjusting element. The first optical element and the first optical path-adjusting element are arranged along the first optical axis.

First claim

What is claimed is:

1 . An optical system for receiving rays of light comprising a first optical module, wherein the first optical module comprises:
a first optical element having a first optical axis, wherein the direction of rays of light pass through the first optical element in a first direction; and a first optical path-adjusting element corresponding to the first optical element, wherein the rays of light are redirected to a second direction by the first optical path-adjusting element; wherein the first optical element and the first optical path-adjusting element are arranged along the first optical axis.

2 . The optical system as claimed in claim 1 , wherein the first optical element has:
a first surface, having a planar structure that is not parallel to the first optical axis, facing the first optical path-adjusting element; and a second surface opposite to the first surface, having a non-planar structure that is not parallel to the first optical axis; wherein the first surface and the second surface are arranged along the first optical axis; wherein the first optical path-adjusting element has: a third surface, having a planar structure, facing the first optical element; wherein the first surface and the third surface are parallel, and there is a gap between the first surface and the third surface, including gas inside the gap.

3 . The optical system as claimed in claim 2 , wherein the first surface is perpendicular to the first optical axis, and the second surface has a curved structure.

4 . The optical system as claimed in claim 2 , wherein the first optical module further comprises:
a positioning assembly disposed between the first optical element and the first optical path-adjusting element, for maintaining the gap between the first optical element and the first optical path-adjusting element; wherein the gas inside the gap is atmospheric air.

5 . The optical system as claimed in claim 2 , wherein the first optical module further comprises:
a first driving assembly disposed at the first optical element, varying the structure of the second surface; wherein the second surface has a curvature that is adjustable by the first driving assembly, whereby the state of the rays of light passing through the first optical element is adjusted.

6 . The optical system as claimed in claim 5 , wherein the first optical module further comprises:
a first movable portion connected to the first optical element; and a first fixed portion having a first housing, wherein the first housing has a first accommodating space, in which the first optical path-adjusting element is accommodated, and wherein the first movable portion is movable relative to the first fixed portion; wherein the first driving assembly drives the first movable portion to move relative to the first fixed portion; wherein when viewed along the first optical axis, the first driving assembly and the first optical path-adjusting element do not overlap.

7 . The optical system as claimed in claim 6 , wherein the first optical path-adjusting element does not move relative to the first fixed portion, and the first optical path-adjusting element includes a glass material.

8 . The optical system as claimed in claim 5 , further comprising a second optical module, wherein the second optical module comprises:
a second optical element having a second optical axis, wherein the second optical axis is parallel to the second direction; wherein the first optical module and the second optical module are arranged along the second optical axis, wherein the first driving assembly at least partially overlaps the second optical module, and the first optical element at least partially overlaps the second optical module when viewed along the second optical axis.

9 . The optical system as claimed in claim 8 , wherein the first optical axis is perpendicular to the second optical axis.

10 . The optical system as claimed in claim 8 , wherein the second optical module further comprises:
a second fixed portion having a second housing, wherein the second housing has a second accommodating space, in which the second optical element is accommodated, and wherein the second housing is fixedly connected to the first optical module.

11 . The optical system as claimed in claim 10 , wherein the second optical module further comprises:
a second movable portion connected to the second optical element; a second driving assembly driving the second movable portion to move relative to the second fixed portion; and a third optical element accommodated in the second accommodating space, wherein the third optical element and the second optical element are arranged along the second optical axis; wherein a first diopter of the first optical element is greater than a second diopter of the second optical element and a third diopter of the third optical element; wherein the third diopter is different from the second diopter.

12 . The optical system as claimed in claim 11 , wherein the first driving assembly varies the first diopter of the first optical element within a first range;
wherein any number within the first range is greater than the second diopter and the third diopter.

13 . The optical system as claimed in claim 11 , wherein the third optical element is fixedly disposed at the second fixed portion, and the second optical element is movable relative to the third optical element.

14 . The optical system as claimed in claim 11 , wherein the first optical element includes liquid, the second optical element includes a plastic material, and the third optical element includes a glass material.

15 . The optical system as claimed in claim 11 , wherein the rays of light pass through the first optical element, the first optical path-adjusting element, the second optical element and the third optical element in sequence.

16 . The optical system as claimed in claim 8 , further comprising a third optical module, wherein the third optical module comprises:
a second optical path-adjusting element, wherein the rays of light are redirected from the second direction to a third direction by the second optical path-adjusting element; wherein of the first direction, the second direction, and the third direction, no two are parallel.

17 . The optical system as claimed in claim 16 , wherein the first optical module further comprises:
a third driving assembly driving the first optical path-adjusting element to rotate about a first rotational axis; wherein the first rotational axis is perpendicular to both the first direction and the second direction.

18 . The optical system as claimed in claim 17 , wherein the third optical module further comprises:
a fourth driving assembly driving the second optical path-adjusting element to rotate about a second rotational axis; wherein the first rotational axis is not parallel to the second rotational axis; wherein the second rotational axis is perpendicular to both the second direction and the third direction.

19 . The optical system as claimed in claim 18 , wherein of the first direction, the second direction, and the third direction, two are perpendicular, and the first rotational axis is perpendicular to the second rotational axis.

20 . The optical system as claimed in claim 16 , further comprising:
a photosensing element having a photosensing surface, wherein the photosensing surface faces the third optical module; wherein after passing through the second optical path-adjusting element of the

Assignees

• Tdk Taiwan Corp

Inventors

• Weng Chih-Wei
• Hu Chao-Chang

Classifications

• G02B7/1805

  for prisms (G02B7/181 takes precedence) · CPC title

• G02B27/646 Primary

  compensating for small deviations, e.g. due to vibration or shake (movement of one or more optical elements for control of motion blur in cameras, projectors or printers G03B2205/0007; image stabilisation in cameras peculiar to the presence or use of an electronic image sensor H04N23/68) · CPC title

• G02B26/004

  based on a displacement or a deformation of a fluid · CPC title

• G02B7/09 Primary

  adapted for automatic focusing or varying magnification · CPC title

• G02B7/04

  with mechanism for focusing or varying magnification · CPC title