Corneal contact lens comprehensive detector and focusing evaluating algorithm thereof

A contact lens and focusing evaluation technology, which is applied in the direction of instruments, glasses/safety glasses, glasses/goggles, etc., can solve the problems of easy fatigue of operators, measurement results affected by human factors, reduction of measurement accuracy and work efficiency, etc. Achieve the effects of reducing calculation time, realizing digitization and intelligence, and simplifying the detection process

Active Publication Date: 2014-05-14
AUTEK CHINA
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The measurement results are greatly affected by human factors, and the operator is

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
  • Corneal contact lens comprehensive detector and focusing evaluating algorithm thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 A comprehensive testing instrument for contact lenses shown includes an eyepiece 1 , an objective lens 3 , a stage 5 , and a dial indicator 11 . Specifically, the eyepiece 1 is an electronic eyepiece, a collimating light pipe 2 is arranged between the eyepiece 1 and the objective lens 3, the dial indicator 11 is a digital dial indicator, and a lifting device is fixed under the stage 5, and a lifting device is provided on the lifting device. Dark field lighting 9. Specifically, the collimator light pipe 2 includes an LED light source, a reticle, a focusing lens and a prism connected in sequence. Directly below the objective lens 3 is provided with an LED dark field lighting device. The electronic eyepiece 1 adopts a CMOS image sensor. The digital dial indicator 11 is in contact with the stage 5 through the probe, and the output signal end is connected with the controller 14 through the control line. A positioning device for positioning the detection ...

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 corneal contact lens comprehensive detector and a focusing evaluating algorithm of the corneal contact lens comprehensive detector. The corneal contact lens comprehensive detector comprises an optical imaging device, an electronic ocular, an objective table, a lifting device, a digital dial indicator, a singlechip and a tablet personal computer and corresponding measuring control software, wherein a collimation light pipe is arranged between the ocular and an objective lens; an LED (light-emitting diode) oblique incidence lighting device and a dark filed lighting device are also respectively arranged above and below the objective table; a digital dial indicator probe is contacted with the objective table, and a digital signal is output to a controller; the lifting device comprises a vertical arm fixed on a base, guide rails and a stepping motor arranged on the vertical arm, and a gear and rack transmission device which realizes the variable speed lifting by switching an electromagnetic clutch, and the stepping motor and the electromagnetic clutch are controlled by a controller. The corneal contact lens comprehensive detector and the focusing evaluating algorithm of the corneal contact lens comprehensive detector provided by the invention have the advantages that a lens surface quality detection function and a lens diameter measuring function are also integrated, the intelligent measurement of a lens is realized, and the detection efficiency and measurement accuracy are improved.

Description

technical field [0001] The invention relates to a corneal contact lens comprehensive detector and a focusing evaluation algorithm thereof. Background technique [0002] During the fitting and production process of contact lenses, it is necessary to accurately measure and inspect the base arc radius of curvature, lens diameter and surface quality of the lens. At present, the base arc meter, diameter ruler and stereo microscope are used for detection respectively. Each time, the lens needs to be loaded and unloaded, positioned and focused again. The operation process is complicated and the detection efficiency is low. The radius of curvature of the base arc of the lens must ensure that the detection error is less than 0.02mm. At present, manual adjustment and naked eye observation are required to judge the clarity of the lens and read the dial indicator data. The measurement results are greatly affected by human factors, and the operator is prone to fatigue, which greatly red...

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): G02C13/00G01M11/02
Inventor 王小立
Owner AUTEK CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap