Check patentability & draft patents in minutes with Patsnap Eureka AI!

Automatic focusing device

A technology of auto-focus and rope transmission, applied in the direction of focusing device, transmission device, installation, etc., can solve the problems of difficult assembly, large lens size, complex structure of focusing device, etc., and achieve the effect of simple structure, small height and volume

Inactive Publication Date: 2008-06-25
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The autofocus device achieves focusing by driving the gear set driven by the motor, which relatively requires a relatively large space for the assembly of various components. Therefore, the structure of the focusing device is complex, difficult to assemble, and the size of the lens is too large

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Automatic focusing device
  • Automatic focusing device
  • Automatic focusing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0013] like figure 1 and figure 2 As shown, the autofocus device 10 provided by the first embodiment of the present invention includes an imaging lens group 11 , a lens barrel 12 , a motor 13 and a belt 14 .

[0014] The imaging lens group 11 includes at least one lens group 112 and a bracket 110 for supporting the lens group 112 . In this embodiment, only one lens group 112 is taken as an example for illustration. The optical axis of the imaging lens group 11 is denoted as OO′, and the outer wall of the bracket 110 is provided with an external thread 1102 . Preferably, the bracket 110 is provided with a first groove 1104 for accommodating the belt 14 and preventing the belt 14 from sliding up and down along the longitudinal direction of the bracket 110 . Preferably, the bracket 110 is designed in a cylindrical shape, and the corresponding lens group 112...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an automatic focusing device which comprises a lens barrel, at least one imaging lens group and at least one motor, wherein, each imaging lens group and each motor are correspondingly arranged on the lens barrel; each motor comprises a rotor; the axial line of each rotor is parallel to the optical axis of a corresponding imaging lens group; moreover, each motor drives the corresponding imaging lens group to rotate through friction drive. The automatic focusing device has the advantages of simple structure and small volume.

Description

technical field [0001] The invention relates to an automatic focus device, in particular to an automatic focus device with simple structure and small volume. Background technique [0002] After the lens modules for digital cameras and mobile phones are assembled, due to the limitation of the manufacturing process of each component, there will inevitably be errors in the focal length of the lens, which must be adjusted and calibrated so that the image through the lens can be clearly projected onto the image of the digital camera. on the tester. [0003] The lens modules of existing digital cameras and mobile phone cameras mainly use adjustment devices on the camera lens to move the lens back and forth, thereby adjusting the distance between the lens and the image sensor to achieve the purpose of focusing. [0004] An automatic focusing device mainly includes a lens group, a driving motor and a mirror base. An output shaft protrudes from the side wall of the driving motor, a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/09G03B13/36F16H7/02
CPCH04N5/2254G03B17/02H04N5/2257H04N23/57H04N23/55
Inventor 余盛荣
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com