GB442060A - Optical magnifying device - Google Patents

Optical magnifying device

Info

Publication number
GB442060A
GB442060A GB1291935A GB1291935A GB442060A GB 442060 A GB442060 A GB 442060A GB 1291935 A GB1291935 A GB 1291935A GB 1291935 A GB1291935 A GB 1291935A GB 442060 A GB442060 A GB 442060A
Authority
GB
United Kingdom
Prior art keywords
cylinder
magnifying
sphere
lens
base
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
GB1291935A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1291935A priority Critical patent/GB442060A/en
Publication of GB442060A publication Critical patent/GB442060A/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)
  • Stereoscopic And Panoramic Photography (AREA)

Abstract

442,060. Magnifying-lenses. EMERSON, A. H., 24, Wentworth Park, Finchley, and CULVER, E., 42, Coolhurst Road, Crouch End, both in London. April 30, 1935, No. 12919. [Class 97 (i)] A magnifying-lens to be used with its base in contact with the object to be viewed comprises a segment of a sphere or cylinder greater than a hemisphere or half cylinder, the height t of the lens being approximately 1.25 the radius of the sphere or cylinder. The base may be plane, or it may be slightly concave as shown in dotted lines. Specification 434,982 is referred to.
GB1291935A 1935-04-30 1935-04-30 Optical magnifying device Expired GB442060A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1291935A GB442060A (en) 1935-04-30 1935-04-30 Optical magnifying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1291935A GB442060A (en) 1935-04-30 1935-04-30 Optical magnifying device

Publications (1)

Publication Number Publication Date
GB442060A true GB442060A (en) 1936-01-31

Family

ID=10013534

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1291935A Expired GB442060A (en) 1935-04-30 1935-04-30 Optical magnifying device

Country Status (1)

Country Link
GB (1) GB442060A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105116540A (en) * 2015-10-09 2015-12-02 宫安迪 Optical magnifier unlikely to cause eye fatigue
CN110959130A (en) * 2017-07-28 2020-04-03 弗劳恩霍夫应用研究促进协会 MEMS mirror assembly and method for manufacturing a MEMS mirror assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105116540A (en) * 2015-10-09 2015-12-02 宫安迪 Optical magnifier unlikely to cause eye fatigue
CN110959130A (en) * 2017-07-28 2020-04-03 弗劳恩霍夫应用研究促进协会 MEMS mirror assembly and method for manufacturing a MEMS mirror assembly
CN110959130B (en) * 2017-07-28 2022-08-16 弗劳恩霍夫应用研究促进协会 MEMS mirror assembly and method for manufacturing a MEMS mirror assembly

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