Invention Grant
- Patent Title: Type of presbyopic lens
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Application No.: US15291085Application Date: 2016-10-12
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Publication No.: US10175506B2Publication Date: 2019-01-08
- Inventor: Shih-Hsien Lin
- Applicant: Xiaoting Chen
- Applicant Address: CN Longyan
- Assignee: Xiaoting Chen
- Current Assignee: Xiaoting Chen
- Current Assignee Address: CN Longyan
- Agency: Adsero IP
- Priority: CN201620078129U 20160127
- Main IPC: G02C7/06
- IPC: G02C7/06 ; G02C7/02

Abstract:
The present disclosure involves the field of optical lenses, and particularly a type of auto-focusing presbyopic lens for people suffering from light to moderate presbyopia. The lens employs a structure wherein the thickness gradually gets smaller from the center to the edge, and the power of the lens gradually increases from 0 D on the edge to +2.00 D in the center. The length of the progressive passage on the lens is 28-36 mm, the central thickness of the lens is 1.2 mm, and the peripheral thickness is 0.5 mm. In some embodiments, the central thickness of the lens may be 2.4 mm and the peripheral thickness may be 1.0 mm. The invention fully considers the facial features of Asians, and employs an appropriate minimum assembly height while the structure, wherein the thickness gradually gets smaller from the center to the edge, conforms to the daily viewing habits of the elderly population.
Public/Granted literature
- US20170212364A1 Type of presbyopic lens Public/Granted day:2017-07-27
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