Periscopic optical zoom module and assembly method therefor, and corresponding adjustable optical assembly

Patent metadata

Field	Value
Publication number	US-12493163-B2
Application number	US-202117925170-A
Country	US
Kind code	B2
Filing date	Apr 7, 2021
Priority date	May 13, 2020
Publication date	Dec 9, 2025
Grant date	Dec 9, 2025

Abstract

Provided is an adjustable optical assembly ( 900 ), including a bearing base ( 921 ), a driving mechanism ( 910 ), a zoom optical assembly ( 200 ), and a compensating optical assembly ( 300 ). The driving mechanism ( 910 ) includes: a bracket ( 911 ) having a bottom end connected to the bearing base ( 921 ) and a top end having a top groove ( 911 a ) open upwards; guide rods ( 912, 913 ) supported on the top groove ( 911 a ), the guide rods ( 912, 913 ) coinciding with the direction of optical axes of the zoom optical assembly ( 200 ) and the compensating optical assembly ( 300 ); a zoom bearer ( 914 ); a compensating bearer ( 915 ); a zoom driving assembly; and a compensating driving assembly. The zoom bearer ( 914 ) and the compensating bearer ( 915 ) are both mounted on the guide rods ( 912, 913 ) and slidable along the guide rods ( 912, 913 ). Also provided are a corresponding periscopic optical zoom module and an assembly method therefor. According to the adjustable optical assembly ( 900 ), the bracket ( 911 ) and the guide rods ( 912, 913 ) are disposed on the bearing base ( 921 ), thereby effectively ensuring that the moving directions of a zoom group and a compensating group do not deviate from a main optical axis. Moreover, the adjustable optical assembly ( 900 ) is compact in structure and convenient to assemble, and facilitates large-scale mass production.

First claim

What is claimed is:

1 . An adjustable optical assembly for an optical zoom module, characterized by the adjustable optical assembly comprising: a bearing base, a driving mechanism, a zoom optical assembly, and a compensating optical assembly,
wherein the driving mechanism comprises: a bracket having a bottom end connected to the bearing base and a top end having a top groove open upwards; guide rods supported on the top groove and coinciding with the direction of optical axes of the zoom optical assembly and the compensating optical assembly; a zoom bearer having a first through hole, the zoom optical assembly being mounted in the first through hole; a compensating bearer having a second through hole, the compensating optical assembly being mounted in the second through hole; a zoom driving assembly comprising a zoom coil and a zoom magnetic element; and a compensating driving assembly comprising a compensating coil and a compensating magnetic element, wherein the zoom bearer is mounted on the guide rods and is slidable along the guide rods under the drive of the zoom driving assembly, the compensating bearer is mounted on the guide rods and is slidable along the guide rods under the drive of the compensating driving assembly, the zoom coil and the zoom magnetic element are fixed to the bearing base and the zoom bearer respectively, and the compensating coil and the compensating magnetic element are fixed to the bearing base and the compensating bearer respectively; and a height of a top surface of the guide rods does not extend beyond a top surface of the zoom bearer; or the height of the top surface of the guide rods is higher than the top surface of the zoom bearer, and a height difference between the top surface of the guide rods and the top surface of the zoom bearer is not more than 0.4 mm.

2 . The adjustable optical assembly according to claim 1 , wherein the first through hole is in a cut circle shape formed by cutting the top and bottom of a circle.

3 . The adjustable optical assembly according to claim 2 , wherein the guide rods include a first guide rod and a second guide rod, and the zoom bearer has a top side, a bottom side, a driving side, and a driven side facing away from the driving side, and the zoom driving assembly is disposed on the driving side, and the first guide rod is disposed on the driven side, and the second guide rod is disposed on the driving side.

4 . The adjustable optical assembly according to claim 3 , wherein the top side, bottom side and driven side of the zoom bearer have a top side wall, a bottom side wall and a driven side wall, respectively, and the top side wall and the bottom side wall have a smaller thickness than the driven side wall.

5 . The adjustable optical assembly according to claim 3 , wherein the driven side and driving side of the zoom bearer both have a guide rod mounting structure adapted to mount the first guide rod or the second guide rod.

6 . The adjustable optical assembly according to claim 5 , wherein the guide rod mounting structure is a lateral guide rod slot of which an opening direction is perpendicular to an opening direction of the top groove of the bracket.

7 . The adjustable optical assembly according to claim 5 , wherein the guide rod mounting structure is a guide rod through hole through which the guide rods pass.

8 . The adjustable optical assembly according to claim 7 , wherein the guide rod through hole has a rounded triangular cross-section, and a ball is disposed between the guide rods and the guide rod through hole.

9 . The adjustable optical assembly according to claim 5 , wherein the guide rod mounting structure includes a guide rod through hole or a guide rod slot, and the driving side of the zoom bearer has the guide rod through hole through which the guide rods pass, and the driven side of the zoom bearer has the lateral guide rod slot of which an opening direction is perpendicular to an opening direction of the top groove of the support.

10 . The adjustable optical assembly according to claim 9 , wherein the driving side of the zoom bearer has a groove-like structure in which the zoom magnetic element is embedded fixedly.

11 . The adjustable optical assembly according to claim 10 , wherein the zoom coil is fixed to the bearing base, and a shape of the zoom magnetic element is plate-like, and the zoom magnetic element has a surface facing the zoom coil.

12 . The adjustable optical assembly according to claim 1 , wherein the second through hole is in a cut circle shape formed by cutting the top and bottom of a circle.

13 . The adjustable optical assembly according to claim 12 , wherein the guide rods include a first guide rod and a second guide rod, and the compensating bearer has a top side, a bottom side, a driving side, and a driven side facing away from the driving side, and the compensating driving assembly is disposed on the driving side, and the first guide rod is disposed on the driven side, and the second guide rod is disposed on the driving side.

14 . The adjustable optical assembly according to claim 13 , wherein the driven side and driving side of the compensating bearer both have a guide rod mounting structure adapted to mount the first guide rod or the second guide rod.

15 . The adjustable optical assembly according to claim 14 , wherein the guide rod mounting structure includes a guide rod through hole or a guide rod slot, and the driving side of the zoom bearer has the guide rod through hole through which the guide rods pass, and the driven side of the zoom bearer has the lateral guide rod slot of which an opening direction is perpendicular to an opening direction of the top groove of the support.

16 . The adjustable optical assembly according to claim 15 , wherein the compensating bearer has a magnetic element mounting structure formed by extending outwards across the underneath of the second guide rod, and the compensating magnetic element is a bar magnet having an axis coinciding with the optical axis of the compensating optical assembly, and the bar magnet has an end connected to the magnetic element mounting structure and a free end, and the bar magnet is capable of extending into the compensating coil.

17 . The adjustable optical assembly according to claim 1 , including a housing, wherein the housing includes the bearing base and a cover adapted to the bearing base.

18 . The adjustable optical assembly according to claim 1 , wherein the bearing base includes a pad assembly, and the zoom driving assembly and the compensating driving assembly are both electrically connected to the exterior through the bearing base.

19 . A periscopic optical zoom module, characterized by comprising:
a fixed optical assembly comprising a light turning element; an adjustable optical assembly according to claim 1 , wherein the zoom optical assembly is disposed between the light turning element and the compensating optical assembly; and a photosensitive assembly, the compensating optical assembly being disposed between the zoom optical assembly and the photosensitive assembly.

Assignees

• Ningbo Sunny Opotech Co Ltd

Inventors

• Wang Qi
• Yuan Dongli
• Que Jiayao
• Yu Sisi
• Tanaka Takehiko
• Zheng Chengchang
• Chang Shuhang
• Fang Yinli
• Pei Haipeng
• Wu Yurong
• Zhang Xunlong
• Sun Xinxiang
• Liu Fuwen

Classifications

• G02B23/08

  Periscopes {(arrangements on floating structures of underwater viewing devices B63C11/49; arrangement of visual watch equipment on submarines B63G8/38)} · CPC title

• G02B7/102 Primary

  controlled by a microcomputer (cameras with interchangeable lenses G03B17/14) · CPC title

• G02B7/09

  adapted for automatic focusing or varying magnification · CPC title

• G02B7/021

  for more than one lens · CPC title

• G02B15/163

  having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group (G02B15/177 takes precedence) · CPC title