Invention Grant
- Patent Title: System and method for inspecting optical power and thickness of ophthalmic lenses immersed in a solution
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Application No.: US16375061Application Date: 2019-04-04
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Publication No.: US10976217B2Publication Date: 2021-04-13
- Inventor: Sergey Smorgon , Ya'akob Bin Mohamed , Santosh Singh Elangbam
- 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: Thomas | Horstemeyer, LLP
- Priority: SG10201803290 20180419
- Main IPC: G01M11/02
- IPC: G01M11/02

Abstract:
A system for producing a high contrast image of an ophthalmic lens under inspection, comprising: top camera to view ophthalmic lens through lens module; motorized mechanism for positioning top camera at two pre-programmed positions; three illumination modules; said illumination modules focusing light through ophthalmic lens under inspection, thereby producing a high contrast image of features of ophthalmic lens; wherein ophthalmic lens is contained within cuvette with optical power of positive of ten; said cuvette mounted with two optical windows, one of them being vertical and other at an angle; said cuvette having transparent bottom glass suitably designed to position ophthalmic lens under inspection; said cuvette designed to be filled with saline solution; accurately calibrated test object positioned to achieve image of ophthalmic lens overlaid with image of pattern present on test object; additional illumination source comprising laser diode; and second camera to view ophthalmic lens through slanted optical lens module.
Public/Granted literature
- US20190323920A1 SYSTEM AND METHOD FOR INSPECTING OPTICAL POWER AND THICKNESS OF OPHTHALMIC LENSES IMMERSED IN A SOLUTION Public/Granted day:2019-10-24
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