GB775587A - Improvements in or relating to rod magnifiers - Google Patents

Improvements in or relating to rod magnifiers

Info

Publication number
GB775587A
GB775587A GB29416/54A GB2941654A GB775587A GB 775587 A GB775587 A GB 775587A GB 29416/54 A GB29416/54 A GB 29416/54A GB 2941654 A GB2941654 A GB 2941654A GB 775587 A GB775587 A GB 775587A
Authority
GB
United Kingdom
Prior art keywords
ott
oct
light passing
conical surfaces
magnifier
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
GB29416/54A
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
Publication of GB775587A publication Critical patent/GB775587A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lenses (AREA)

Abstract

775,587. Magnifying-lenses. OTT, H., [trading as OTT, A. [Firm of] ]. Oct. 12, 1954 [Oct. 16, 1953], No. 29416/54. Class 97(1) The upper end portion of a cylindrical rod type magnifier has two tapered segments, the angle of taper of the upper being less than that of the lower end, light passing through the upper being reflected by the lower towards the object to be magnified. As shown, the object 14 is viewed through convex spherical surface 12 and light passing through conical surfaces 15 and 18 is totally internally reflected at conical surfaces 16 and 19. In another form, the two tapered segments may be formed as a single continuously curved surface. The magnifier is used particularly for following a curve as in planimeters or pantographs and it may be made of a transparent plastic such as "Plexiglass" (Registered Trade Mark).
GB29416/54A 1953-10-16 1954-10-12 Improvements in or relating to rod magnifiers Expired GB775587A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE775587X 1953-10-16

Publications (1)

Publication Number Publication Date
GB775587A true GB775587A (en) 1957-05-29

Family

ID=6686332

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29416/54A Expired GB775587A (en) 1953-10-16 1954-10-12 Improvements in or relating to rod magnifiers

Country Status (1)

Country Link
GB (1) GB775587A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1258764A2 (en) * 2001-05-18 2002-11-20 Konica Corporation Image pickup lens, image pickup apparatus and method for forming image pickup lens

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1258764A2 (en) * 2001-05-18 2002-11-20 Konica Corporation Image pickup lens, image pickup apparatus and method for forming image pickup lens
EP1258764A3 (en) * 2001-05-18 2004-05-12 Konica Corporation Image pickup lens, image pickup apparatus and method for forming image pickup lens
US7092174B2 (en) 2001-05-18 2006-08-15 Konica Corporation Image pickup lens, image pickup apparatus and method for forming image pickup lens

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