Big coke focal sphere diffractive artificial lens
A technology of intraocular lens and aspheric surface, applied in the direction of intraocular lens, eye implant, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0025] Such as figure 1 Shown is a side view of a large depth-of-focus aspheric diffractive IOL. The aspherical diffractive intraocular lens includes an anterior surface 1 and a posterior surface 2 of an optical part. The artificial lens is axially symmetrical as a whole, the front surface and the back surface of the optical part are convex aspheric surfaces, and a diffraction ring is attached to the back surface.
[0026] Through optimization, an aspheric diffractive intraocular lens with large depth of field (600mm-5000mm object distance) and additional optical power (400mm) was finally designed. The material is PMMA, the refractive index is 1.494, and the Abbe number is 51.27. The surface type of the front surface and the back surface can be described as
[0027]
[0028] Among them, a 1 ~a 4 They are the even-order aspheric coefficients from the 4th order to the 10th order, c is the curvature at the apex of the aspheric surface, r is the distance from any point on t...
PUM
Property | Measurement | Unit |
---|---|---|
Radius | aaaaa | aaaaa |
Center thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com