GB514146A - Improvements in contact eyeglasses - Google Patents

Improvements in contact eyeglasses

Info

Publication number
GB514146A
GB514146A GB36634/38A GB3663438A GB514146A GB 514146 A GB514146 A GB 514146A GB 36634/38 A GB36634/38 A GB 36634/38A GB 3663438 A GB3663438 A GB 3663438A GB 514146 A GB514146 A GB 514146A
Authority
GB
United Kingdom
Prior art keywords
dec
contact
scleral
sections
eyeglasses
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB36634/38A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Zeiss AG
Original Assignee
Carl Zeiss AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carl Zeiss AG filed Critical Carl Zeiss AG
Publication of GB514146A publication Critical patent/GB514146A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/04—Contact lenses for the eyes

Abstract

514,146. Contact spectacle lenses. ZEISS, C., [Firm of]. Dec. 16, 1938, No. 36634. Convention date, Dec. 20, 1937. Drawings to Specification. [Class 97 (i)] The lens has a bowl-shaped corneal portion and an annular scleral portion whose interior sections in perpendicular meridional planes constitute arcs of circles of different radii. The two arcs forming the sections of the two sides of the scleral portions in one of the planes may be concentric or have different centres on either side of the lens axis.
GB36634/38A 1937-12-20 1938-12-16 Improvements in contact eyeglasses Expired GB514146A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE514146X 1937-12-20

Publications (1)

Publication Number Publication Date
GB514146A true GB514146A (en) 1939-10-31

Family

ID=6548594

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36634/38A Expired GB514146A (en) 1937-12-20 1938-12-16 Improvements in contact eyeglasses

Country Status (1)

Country Link
GB (1) GB514146A (en)

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