Lens device

Patent metadata

Field	Value
Publication number	US-11892704-B2
Application number	US-202017105529-A
Country	US
Kind code	B2
Filing date	Nov 26, 2020
Priority date	Nov 6, 2018
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

A lens device including a lens barrel, a lens, a linear reciprocating motion mechanism, and a power machine is provided. The lens is disposed in the lens barrel. The linear reciprocating motion mechanism includes a first movable part and a second movable part. The first movable part is coupled to the lens barrel. The second movable part is coupled to the first movable part. The power machine is coupled to the second movable part to drive the second movable part to rotate, thereby driving the first movable part, and the first movable part drives the lens barrel to perform a linear reciprocating motion, wherein when the second movable part is rotated by N turns, the first movable part is rotated by one turn, and N is greater than or equal to 10.

First claim

What is claimed is:

1. A lens device, comprising:
a lens barrel;
a lens disposed in the lens barrel;
a linear reciprocating motion mechanism, comprising:
a first movable part coupled to the lens barrel; and
a second movable part coupled to the first movable part; and
a power machine coupled to the second movable part to be configured to drive the second movable part to rotate, thereby driving the first movable part, and the first movable part is configured to drive the lens barrel to perform a linear reciprocating motion, wherein the second movable part is rotatable N turns by the power machine, the first movable part is rotated by one turn, and N is greater than or equal to 10,
wherein the first movable part comprises a first rotating part and a second rotating part, a rotating axis of the first rotating part is at the center of the first rotating part, a rotating axis of the second rotating part is at the non-center of the second rotating part, the rotating axis of the first rotating part is coaxial with the rotating axis of the second rotating part, and the second rotating part is abutted against the lens barrel.

2. The lens device according to claim 1 , wherein the lens device further comprises a case, the lens barrel comprises a projection, and the lens barrel is disposed in the case, wherein the first movable part is configured to rotate and push the projection to move the lens barrel.

3. The lens device according to claim 2 , wherein the shape of the projection is selected from the group of a rod shape, a sheet shape, a column shape, or an irregular shape.

4. The lens device according to claim 1 , wherein the lens device further comprises a case, and the lens device comprises an elastic member disposed between the case and the lens barrel.

5. The lens device according to claim 1 , wherein the second movable part comprises a first sub-movable part and a second sub-movable part that are coaxial, the lens device further comprises a third movable part coaxial with the power machine, the third movable part is coupled to the first sub-movable part, and the second sub-movable part is coupled to the first movable part.

6. The lens device according to claim 1 , wherein the first movable part or the second movable part includes a gear set.

7. The lens device according to claim 1 , wherein the first movable part or the second movable part includes a friction wheel set.

8. The lens device according to claim 1 , wherein a power machine is chosen from the group of a step motor, a synchronous motor, and a permanent magnet synchronous motor.

9. A lens device, comprising:
a lens barrel;
a lens disposed in the lens barrel;
a linear reciprocating motion mechanism, comprising:
a first movable part coupled to the lens barrel; and
a second movable part coupled to the first movable part; and
a power machine coupled to the second movable part to be configured to drive the second movable part to rotate along a second axis, thereby driving the first movable part to rotate along a first axis, and the first movable part is configured to drive the lens barrel to perform a linear reciprocating motion along a displacement direction that is non-parallel to the first axis, wherein the second movable part is rotatable N turns by the power machine, the first movable part is rotated by one turn, and N is greater than or equal to 10,
wherein the first movable part includes a worm gear, and the second movable part includes a worm; and
wherein the first movable part comprises a first rotating part and a second rotating part, a rotating axis of the first rotating part is at the center of the first rotating part, a rotating axis of the second rotating part is at the non-center of the second rotating part, the rotating axis of the first rotating part is coaxial with the rotating axis of the second rotating part, and the second rotating part is abutted against the lens barrel.

10. The lens device according to claim 9 , wherein the lens device further comprises a case, the lens barrel comprises a projection, and the lens barrel is disposed in the case, wherein the first movable part is configured to rotate and push the projection to move the lens barrel.

11. The lens device according to claim 10 , wherein the shape of the projection is selected from the group of a rod shape, a sheet shape, a column shape, or an irregular shape.

12. The lens device according to claim 9 , wherein the lens device further comprises a case, and the lens device comprises an elastic member disposed between the case and the lens barrel.

13. A lens device, comprising:
a lens barrel;
a lens disposed in the lens barrel;
a linear reciprocating motion mechanism, comprising:
a first movable part coupled to the lens barrel; and
a second movable part coupled to the first movable part; and
a power machine coupled to the second movable part to be configured to drive the second movable part to rotate, thereby driving the first movable part, and the first movable part is configured to drive the lens barrel to perform a linear reciprocating motion, wherein the second movable part is rotatable N turns by the power machine, the first movable part is rotated by one turn, and N is greater than or equal to 10,
wherein the first movable part comprises a first rotating part and a second rotating part, the second rotating part is an eccentric cam, a center rotating axis of the first rotating part is coaxial with a non-center rotating axis of the second rotating part, and the second rotating part is abutted against the lens barrel.

Assignees

• Young Optics Inc

Inventors

• Yen Yi-Feng
• Lee Chia-Chang

Classifications

• G02B7/09 Primary

  adapted for automatic focusing or varying magnification · CPC title

• G03B21/53

  Means for automatic focusing, e.g. to compensate thermal effects · CPC title

• G03B3/10

  Power-operated focusing · CPC title

• G03B21/142

  Adjusting of projection optics · CPC title

• G02B7/08

  adapted to co-operate with a remote control mechanism · CPC title