GB441995A - Improvements in magnifying glasses - Google Patents

Improvements in magnifying glasses

Info

Publication number
GB441995A
GB441995A GB27014/35A GB2701435A GB441995A GB 441995 A GB441995 A GB 441995A GB 27014/35 A GB27014/35 A GB 27014/35A GB 2701435 A GB2701435 A GB 2701435A GB 441995 A GB441995 A GB 441995A
Authority
GB
United Kingdom
Prior art keywords
magnifying
magnifying glasses
glasses
rathenow
busch
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
GB27014/35A
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.)
EMIL BUSCH AG OPTISCHE IND
Original Assignee
EMIL BUSCH AG OPTISCHE IND
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 EMIL BUSCH AG OPTISCHE IND filed Critical EMIL BUSCH AG OPTISCHE IND
Publication of GB441995A publication Critical patent/GB441995A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B25/00—Eyepieces; Magnifying glasses
    • G02B25/002—Magnifying glasses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

441,995. Magnifying-glasses. BUSCH AKT.-GES. OPTISCHE INDUSTRIE, E., 5, Berliner Strasse, Rathenow, Germany. Sept. 30, 1935, No. 27014. Convention date, Oct. 11, 1934. [Class 97 (i)] A magnifying - lens consists of a body portion b in the form of a cylinder the base of which is placed in contact with the object to be viewed, and an upper refracting surface a which is aspheric ally curved in such a way that the radius of curvature increases from the centre towards the periphery.
GB27014/35A 1934-10-11 1935-09-30 Improvements in magnifying glasses Expired GB441995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE441995X 1934-10-11

Publications (1)

Publication Number Publication Date
GB441995A true GB441995A (en) 1936-01-30

Family

ID=6520041

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27014/35A Expired GB441995A (en) 1934-10-11 1935-09-30 Improvements in magnifying glasses

Country Status (1)

Country Link
GB (1) GB441995A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151370A (en) * 1983-12-15 1985-07-17 Loupes Hautes Performance A magnifying glass for reading
CN105116540A (en) * 2015-10-09 2015-12-02 宫安迪 Optical magnifier unlikely to cause eye fatigue

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151370A (en) * 1983-12-15 1985-07-17 Loupes Hautes Performance A magnifying glass for reading
CN105116540A (en) * 2015-10-09 2015-12-02 宫安迪 Optical magnifier unlikely to cause eye fatigue

Similar Documents

Publication Publication Date Title
GB441995A (en) Improvements in magnifying glasses
GB508448A (en) Improvements in soft effect attachments for use with photographic objectives
FR938201A (en) Improvements in high pressure vessels and in the manufacture of such vessels
GB434982A (en) Improvements in magnifying glasses
GB440996A (en) Improvements in magnifying glasses
GB600005A (en) A uniformly-refracting lens
GB442060A (en) Optical magnifying device
GB437477A (en) Improvements in water gauge glass packings
FR799790A (en) Mechanical device allowing the shaping of the so-called "advertisement" caps with the simultaneous corking of the bottles
SU47375A1 (en) Gas photorelay
GB509954A (en) Improvements in or relating to spectacle lenses
ES2510U (en) A thermo-apparatus for the service of refreshing drinks, provided with two or more tanks (Machine-translation by Google Translate, not legally binding)
ES133814A1 (en) Improvements in the manufacture of bottles, bottles and similar containers, with recogeliquid device.
ES9006U (en) Device or device by adjustable goggles-twin glasses. (Machine-translation by Google Translate, not legally binding)
GB470956A (en) Improved tubes and like articles of synthetic resin
AU109422B2 (en) Improvements in and relating to diaphragm valves
ES9039U (en) Container in the form of a removable bottle to contain inside a bottle of glass or mud appropriate to its shape. (Machine-translation by Google Translate, not legally binding)
ES4512U (en) Thermo-irrigator apparatus. (Machine-translation by Google Translate, not legally binding)
ES145390A3 (en) Improvements in the manufacture of glasses, lenses and the like for personal use.
ES44312U (en) An improved case for lipsticks (Machine-translation by Google Translate, not legally binding)
GB430474A (en) Improvements in holding devices for rosin or the like for the bows of stringed instruments
CA360811A (en) Piston and ring
GB713306A (en) Improvements in or relating to containers provided with gauge glasses
CA321679A (en) Piston and ring
ES2713Y (en) Degree of closure and passage with valve.