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

Position detection device, camera module, and rotary actuator

A detection device, a technology for detecting position, applied in the direction of measurement device, electromagnetic measurement device, electromagnetic/magnetic position measurement, etc.

Pending Publication Date: 2021-08-13
TDK CORPARATION
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in reality, due to structural constraints, the change in the direction of the target magnetic field with respect to the change in the position of the target may have to be changed in a non-linear manner.

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
  • Position detection device, camera module, and rotary actuator
  • Position detection device, camera module, and rotary actuator
  • Position detection device, camera module, and rotary actuator

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0053] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, refer to figure 1 and figure 2 The configuration of the camera module according to the first embodiment of the present invention will be described. figure 1 is a perspective view showing the camera module 100 . figure 2 is an explanatory diagram schematically showing the inside of the camera module 100 . In addition, in figure 2 , for ease of understanding, according to the figure 1 The different sizes and configurations of the corresponding parts in FIG. 1 depict various parts of the camera module 100 . The camera module 100 of this embodiment constitutes, for example, a part of a camera for a smartphone including an optical hand-shake correction mechanism and an auto-focus mechanism, and is used in combination with an image sensor 110 using CMOS or the like.

[0054] The camera module 100 according to the present embodiment includes the posi...

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

This position detection device is provided with a magnetic field generator and a magnetic sensor. The magnetic field generator is configured such that a change in the direction of the target magnetic field changes non-linearly with respect to a change in the position of the lens. The magnetic sensor is configured such that a change in the detection signal changes non-linearly with respect to a change in the direction of the target magnetic field.

Description

technical field [0001] The invention relates to a position detection device using a magnetic sensor, a camera module using the position detection device, and a rotary actuator using the position detection device. Background technique [0002] In recent years, position detection devices using magnetic sensors have been used in various applications. Hereinafter, a position detection device using a magnetic sensor will be referred to as a magnetic type position detection device. A magnetic position detection device is used, for example, in a camera module equipped with an auto-focus mechanism incorporated in a smartphone to detect the position of a lens. [0003] U.S. Patent Application Publication No. 2016 / 0231528A1 describes a technique in which, in an autofocus mechanism in which a lens is configured to be movable relative to a substrate, a position sensor detects a resultant vector that passes a certain magnitude in a first direction. It is produced by the interaction of ...

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
IPC IPC(8): H02K33/18G01B7/00
CPCH02K33/18G01B7/003G01D5/147G02B27/646G02B7/08H02K11/215H02K2213/03H02K11/21G03B3/10G03B13/36G03B30/00G03B2205/00G03B2205/0069H04N23/54H04N23/57G01D5/16
Inventor 蔡永福
Owner TDK CORPARATION
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