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

Distance-measurement tool

A technology of distance measurement and jig, which is applied in the direction of line-of-sight measurement, measuring device, measuring distance, etc.

Inactive Publication Date: 2009-10-28
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no relevant measurement fixture to measure the consistency of the moving distance of the lens module when focusing at different angles

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
  • Distance-measurement tool
  • Distance-measurement tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0010] see figure 1 and figure 2 , the distance measurement jig 100 provided by the embodiment of the present invention is used to measure the moving distance of the lens module in the camera module 200 when focusing at different angles.

[0011] The camera module 200 includes a lens module and an auto-focus motor. When focusing, the auto-focus motor drives the lens module to move up and down along its optical axis.

[0012] The distance measuring fixture 100 includes a fixed base 10 , a rotating plate 20 , a carrying platform 30 , a distance measuring device 40 and a rotating shaft 50 passing through the fixing base 10 and fixedly connected to the rotating plate 20 . The rotating plate 20 has a fixed surface 21 , and the carrying platform 30 and the distance measuring device 40 are fixed on two opposite ends of the fixed surface 21 . ...

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 relates to a distance-measurement tool, which is used for measuring the distances a lens module moves when focusing at different angles. The distance-measurement tool comprises a fixed seat, a rotating plate, a load-carrying table, a distance-measuring device and a rotating shaft which passes through the fixed seat and is connected with the rotating plate. The rotating plate is provided with a non-horizontal fixed plane, and the load-carrying table and the distance-measuring device are fixed on two opposite ends of the fixed plane. The distant-measuring device is aligned with the lens module carried by the load-carrying table. When the rotating plate rotates, the angle between the load-carrying table fixed on the fixed plane and the lens module carried by the load-carrying table and a horizontal plane changes, so the distances that the lens module moves when focusing at different angles can be measured.

Description

technical field [0001] The invention relates to a distance measuring jig, in particular to a distance measuring jig capable of measuring the moving distance of a lens module when focusing at different angles. Background technique [0002] Camera modules with auto-focus functions have been widely used in the field of imaging, especially in digital camera devices. With the increasing application of photographic equipment, the focus accuracy of the camera module is also required to be higher and higher, which requires measurement and calibration of various parameters of the camera module. (See Camera calibration with a motorized zoom lens, Pattern Recognition, 2000. Proceedings. 15th International Conference on Volume 4, 3-7 Sept. 2000 Page(s): 495-498 vol.4) [0003] In the manufacturing process of a camera module with autofocus function, in order to measure its focusing accuracy, it is usually necessary to simulate the lens module of the camera module under the same focusing...

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): G03B13/20G01C3/00
Inventor 陈高旗
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