Invention Grant
- Patent Title: Contact lens inspection in a plastic shell
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Application No.: US15894610Application Date: 2018-02-12
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Publication No.: US10885621B2Publication Date: 2021-01-05
- Inventor: Bee Chuan Tan , Chern Fei Chua
- Applicant: EMAGE VISION PTE. LTD.
- Applicant Address: SG Singapore
- Assignee: EMAGE VISION PTE. LTD.
- Current Assignee: EMAGE VISION PTE. LTD.
- Current Assignee Address: SG Singapore
- Agency: Mannava & Kang, P.C.
- Priority: SG10201701099X 20170210
- Main IPC: G06T7/00
- IPC: G06T7/00 ; G02C7/04

Abstract:
An inspection system and method to detect the presence or absence of ophthalmic lenses in a plastic shell just before the seal is applied comprising a high resolution imaging device suitably integrated with an optical module; a UV illumination module suitably mounted below the ophthalmic lens holder; a Visible LED based Top lighting module suitably mounted on Top of the Ophthalmic lens holder; the inspection system which captures images of the lens immersed in a saline solution in a the plastic shell; analyzing the image and determining the characteristics of the lens perimeter and the optical center; making a decision to reject the inspected item if the analyzed image indicates the presence of a flipped, multiple and folded lens or the absence of the lens; making a decision to accept the inspected item, if the analyzed image indicates the presence of a single lens positioned in the correct orientation.
Public/Granted literature
- US20180232876A1 CONTACT LENS INSPECTION IN A PLASTIC SHELL Public/Granted day:2018-08-16
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