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

Method for design of multifocal optical elements

A technology of optical components and optical characteristics, applied in the direction of optical components, optics, instruments, etc.

Inactive Publication Date: 2003-12-24
SHAMIR OPTICAL IND LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, many methods of designing progressive lenses include the continuity constraint of the second derivative of the lens surface

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
  • Method for design of multifocal optical elements
  • Method for design of multifocal optical elements
  • Method for design of multifocal optical elements

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The present invention is a new method of designing multifocal optical elements. This approach allows the designer to focus on specific regions of the optical element surface where obtaining satisfactory optical properties is more important. This approach also allows the designer to control the optical performance along the surface curve and in the neighborhood of the curve.

[0040] In the particular case of designing a progressive lens, the invention does not require the division of the lens into three zones: an upper zone for distance vision, a lower zone for near vision and a transition zone connecting the two zones mentioned above. Instead, the entire lens surface is best viewed as a whole.

[0041] The method of the present invention involves a design process with feedback. This method as figure 1 , and will now be described with reference to that figure. The designer specifies the variable values ​​needed in the design process (step 100), and these parameters ...

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

A method for designing a surface of a multifocal optical element, such as a progressive spectacle lens, includes the steps of partitioning a region into triangles, ( tau i) defining a set of functions, each representing a portion of the surface (li) over one of the triangles ( tau i), and optimizing the functions. A further embodiment includes the steps of partitioning a region into polygons (200), and defining a set of functions, each representing a portion of the surface over one of the polygons (202). Continuity constraints for values of the functions and values for the first derivatives of the functions at boundaries of the polygons are dictated. Continuity constraints for values of the second derivatives of the functions at boundaries of the polygons are not required. The functions are optimized subject to the dictated continuity constraints.

Description

technical field [0001] The invention relates to a design method of a multi-focus optical element. Background technique [0002] Optical elements are those parts of substantially transparent material that have reflective or refractive surfaces for light, such as mirrors, transmissive mirrors, beam splitters, and collimators. Optical components are used in everything including: telescopes, microscopes, cameras and eyeglasses. [0003] Optical components are characterized by their optical performance and surface optical properties. When incident light passes through the optical element, its optical properties such as astigmatism, optical power, and spectrum indicate how the wavefront of the incident light is deformed as it passes through the optical element. Surface optical properties such as surface astigmatism, surface power, and gradients of surface astigmatism and surface power represent the surface geometry of the optical element. Optical properti...

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): G02C7/02G02C7/06
CPCG02C7/061G02C7/028G02C7/06
Inventor D·卡茨曼J·鲁滨斯泰恩
Owner SHAMIR OPTICAL IND 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