Invention Grant
- Patent Title: Method and apparatus for determining a thickness profile of an ophthalmic lens using a single point thickness and refractive index measurements
- Patent Title (中): 用于使用单点厚度和折射率测量来确定眼科镜片的厚度分布的方法和装置
-
Application No.: US13764499Application Date: 2013-02-11
-
Publication No.: US08810784B2Publication Date: 2014-08-19
- Inventor: Michael Widman , Naveen Agarwal , Christopher Wildsmith , Peter W Sites
- Applicant: Johnson & Johnson Vision Care, Inc.
- Applicant Address: US FL Jacksonville
- Assignee: Johnson & Johnson Vision Care Inc.
- Current Assignee: Johnson & Johnson Vision Care Inc.
- Current Assignee Address: US FL Jacksonville
- Main IPC: G01B9/00
- IPC: G01B9/00 ; G03F7/20 ; G01M11/02
Abstract:
This invention provides for a method and an ophthalmic lens thickness profile measuring apparatus. More specifically, the apparatus which is capable of measuring the ophthalmic lens in a precursor state after it is free-formed on an optic forming mandrel on which it can be formed. Additionally, the present invention can also allow for a design profile of the formed ophthalmic lens to be compared to the resulting free-formed ophthalmic lens to ensure it meets specified convergence design criteria.
Public/Granted literature
Information query
