GB643938A - Lenses - Google Patents

Lenses

Info

Publication number
GB643938A
GB643938A GB1476548A GB1476548A GB643938A GB 643938 A GB643938 A GB 643938A GB 1476548 A GB1476548 A GB 1476548A GB 1476548 A GB1476548 A GB 1476548A GB 643938 A GB643938 A GB 643938A
Authority
GB
United Kingdom
Prior art keywords
lenses
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
GB1476548A
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.)
CHRISTIAN ELLIS COULMAN
GUTHRIE RAE PETRIE
Imperial Chemical Industries Ltd
Original Assignee
CHRISTIAN ELLIS COULMAN
GUTHRIE RAE PETRIE
Imperial Chemical Industries Ltd
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 CHRISTIAN ELLIS COULMAN, GUTHRIE RAE PETRIE, Imperial Chemical Industries Ltd filed Critical CHRISTIAN ELLIS COULMAN
Priority to GB1476548A priority Critical patent/GB643938A/en
Priority to FR987673D priority patent/FR987673A/en
Priority to DE1949P0003089 priority patent/DE845414C/en
Publication of GB643938A publication Critical patent/GB643938A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B25/00—Eyepieces; Magnifying glasses
    • G02B25/002—Magnifying glasses
GB1476548A 1948-06-01 1948-06-01 Lenses Expired GB643938A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1476548A GB643938A (en) 1948-06-01 1948-06-01 Lenses
FR987673D FR987673A (en) 1948-06-01 1949-05-31 Magnifying glass
DE1949P0003089 DE845414C (en) 1948-06-01 1949-06-01 Binocular magnifying lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1476548A GB643938A (en) 1948-06-01 1948-06-01 Lenses

Publications (1)

Publication Number Publication Date
GB643938A true GB643938A (en) 1950-09-27

Family

ID=10047096

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1476548A Expired GB643938A (en) 1948-06-01 1948-06-01 Lenses

Country Status (3)

Country Link
DE (1) DE845414C (en)
FR (1) FR987673A (en)
GB (1) GB643938A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4249205A (en) * 1978-12-11 1981-02-03 Marvin P. Hodges Aspheric projection lens system utilizing concave image
WO2016083095A1 (en) * 2014-11-24 2016-06-02 Carl Zeiss Ag Display device which can be placed on the head of a user

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2133643C2 (en) * 1970-07-08 1982-04-22 Polaroid Corp., 02139 Cambridge, Mass. Photographic lens in the form of a triplet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4249205A (en) * 1978-12-11 1981-02-03 Marvin P. Hodges Aspheric projection lens system utilizing concave image
WO2016083095A1 (en) * 2014-11-24 2016-06-02 Carl Zeiss Ag Display device which can be placed on the head of a user

Also Published As

Publication number Publication date
DE845414C (en) 1952-07-31
FR987673A (en) 1951-08-17

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