BE533468A - - Google Patents

Info

Publication number: BE533468A
Authority: BE; Belgium

Application number

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.)

1953-11-25

Publication of BE533468A publication Critical patent/BE533468A/xx

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
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
- G02C7/061—Spectacle lenses with progressively varying focal power
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/0012—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor for multifocal lenses
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/06—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses, the tool or work being controlled by information-carrying means, e.g. patterns, punched tapes, magnetic tapes
- B24B13/065—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses, the tool or work being controlled by information-carrying means, e.g. patterns, punched tapes, magnetic tapes using a template
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses

Landscapes

Physics & Mathematics (AREA)
Health & Medical Sciences (AREA)
Ophthalmology & Optometry (AREA)
General Physics & Mathematics (AREA)
Optics & Photonics (AREA)
Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Health & Medical Sciences (AREA)
Crystals, And After-Treatments Of Crystals (AREA)
Eyeglasses (AREA)

BE533468D 1953-11-25 BE533468A (nl)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR790310X		1953-11-25

Publications (1)

Publication Number	Publication Date
BE533468A true BE533468A (nl)

Family

ID=9221689

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE533468D BE533468A (nl)	1953-11-25

Country Status (3)

Country	Link
US (1)	US2869422A (nl)
BE (1)	BE533468A (nl)
GB (1)	GB790310A (nl)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR1509090A (fr) *	1966-11-29	1968-01-12	Lunetiers Cottet Poichet Soc D	Perfectionnements aux lentilles ophtalmiques à puissance focale progressivement variable
US4002439A (en) *	1973-01-10	1977-01-11	David Volk	Method of forming an ophthalmic lens for presbyopia and aphakia
NL168626C (nl) *	1973-08-16	1982-04-16	American Optical Corp	Lens voor een bril met over het oppervlak varierende sterkte.
CA1012392A (en) *	1973-08-16	1977-06-21	American Optical Corporation	Progressive power ophthalmic lens
US4055379A (en) *	1973-08-16	1977-10-25	American Optical Corporation	Multifocal lens
US4056311A (en) *	1973-08-16	1977-11-01	American Optical Corporation	Progressive power ophthalmic lens having a plurality of viewing zones with non-discontinuous variations therebetween
DE2814678C2 (de) *	1978-04-05	1982-07-29	Hermann Prof. Dr.med. 4400 Münster Gernet	Sehhilfe bei einseitiger Aphakie oder Pseudophakie
FR2486666A1 (fr) *	1980-07-09	1982-01-15	Essilor Int	Lentille ophtalmique a foyers multiples
US4349374A (en) *	1981-01-21	1982-09-14	Camelot Industries Corporation	Method and apparatus for manufacturing glass progressive lenses
GB8528460D0 (en) *	1985-11-19	1985-12-24	Sola Int Holdings	Multifocal lens
DE4412370A1 (de) *	1994-04-12	1995-10-19	Schneider Gmbh & Co Kg	Verfahren und Vorrichtung zum Herstellen asphärischer Linsenoberflächen
ATE408170T1 (de) *	1994-10-21	2008-09-15	Carl Zeiss Vision Au Holding	Verbesserter augen-korrekturlinsen-rohling
US5812237A (en) *	1995-11-27	1998-09-22	Roddy; Kenneth C.	Ophthalmic no-line progressive addition lenses
GB2337133A (en) *	1998-05-06	1999-11-10	Chen Chin Jen	Spectacle lens
FR2782663B1 (fr)	1998-08-28	2000-11-17	Denis Girod	Procede de realisation d'un verre correcteur a foyers multiples, et systeme de mise en oeuvre d'un tel procede
AU2365300A (en) *	1998-12-16	2000-07-03	Wesley-Jessen Corporation	Multifocal contact lens with aspheric surface
US20060103806A1 (en) *	2004-11-16	2006-05-18	Prio Corporation	Non-progressive multi-focal lens with large near/intermediate area
US8272734B2 (en) *	2004-11-16	2012-09-25	Essilor International, S.A.	Non-progressive multifocal lens with large near/intermediate area

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US805438A (en) *	1905-06-16	1905-11-28	Louis Bell	Bifocal lens.
US1143316A (en) *	1911-07-18	1915-06-15	Augustin Georges Poullain	Optical lens.
US1351785A (en) *	1919-10-22	1920-09-07	Arthur E Paige	Multifocal optical element and method and means for making the same
US1518405A (en) *	1923-05-19	1924-12-09	American Optical Corp	Ophthalmic lens
US2109474A (en) *	1931-12-07	1938-03-01	Evans Charles Ernest	Spectacle lens
US2001952A (en) *	1932-12-14	1935-05-21	Birchall Henry James	Lenses and their combination and arrangement in various instruments and apparatus
US2410145A (en) *	1939-10-11	1946-10-29	American Optical Corp	Lens and process of making the same
US2310925A (en) *	1939-10-11	1943-02-16	American Optical Corp	Process of making lenses
US2328584A (en) *	1940-07-06	1943-09-07	Harvey C Rones	Multifocal lens
US2405989A (en) *	1941-08-12	1946-08-20	Beach Lens Corp	Lens
US2399706A (en) *	1943-12-09	1946-05-07	Harvey C Rones	Manufacture of lenses for eyeglasses
US2475275A (en) *	1945-01-19	1949-07-05	Birchall Henry James	Lens of variable focal power having surfaces of involute form
US2755602A (en) *	1951-12-17	1956-07-24	Charles E Evans	Lens grinding machine and method

0
- BE BE533468D patent/BE533468A/xx unknown
1954
- 1954-11-23 GB GB33989/54A patent/GB790310A/en not_active Expired
- 1954-11-23 US US470755A patent/US2869422A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
US2869422A (en)	1959-01-20
GB790310A (en)	1958-02-05

Publication	Publication Date	Title
IT558253A (nl)
AT193854B (nl)	1957-12-10
AT191364A (nl)	1957-08-26
JPS304368B1 (nl)	1955-06-27
AT190646B (nl)	1957-07-10
AT193331B (nl)	1957-11-25
AT189958B (nl)	1957-05-25
AT191026B (nl)	1957-07-25
AT191140B (nl)	1957-08-10
AT192380B (nl)	1957-10-10
FR65696E (nl)	1956-02-29
AT191238B (nl)	1957-08-10
AT199365B (nl)	1958-08-25
JPS3115816Y1 (nl)	1956-09-28
AT194824B (nl)	1958-01-25
AT194074B (nl)	1957-12-27
AT194372B (nl)	1958-01-10
AT195400B (nl)	1958-01-25
AT195162B (nl)	1958-01-25
FR1100014A (nl)
AT196785B (nl)	1958-03-25
AT197771B (nl)	1958-05-27
AT199317B (nl)	1958-08-25
AT205166B (nl)	1959-09-10
AT213751B (nl)	1961-02-27