GB566963A - Improvements in or relating to optical objectives - Google Patents

Improvements in or relating to optical objectives

Info

Publication number
GB566963A
GB566963A GB1096543A GB1096543A GB566963A GB 566963 A GB566963 A GB 566963A GB 1096543 A GB1096543 A GB 1096543A GB 1096543 A GB1096543 A GB 1096543A GB 566963 A GB566963 A GB 566963A
Authority
GB
United Kingdom
Prior art keywords
collective
component
components
taylor
refractive index
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
GB1096543A
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.)
Taylor Taylor and Hobson Ltd
Original Assignee
Taylor Taylor and Hobson 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 Taylor Taylor and Hobson Ltd filed Critical Taylor Taylor and Hobson Ltd
Priority to GB1096543A priority Critical patent/GB566963A/en
Publication of GB566963A publication Critical patent/GB566963A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below

Landscapes

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

Abstract

566,963. Lenses. TAYLOR, TAYLOR, & HOBSON, Ltd., and WARMISHAM, A. July 6, 1943, No. 10965. [Class 97 (i)] In an objective comprising two compound dispersive meniscus components having their concave air exposed surfaces facing one another disposed between a front collective component and a pair of rear collective components, the mean refractive index of the material used for the rear element of the rear dispersive component lies between 1.70 and 1.80 whilst the collective fourth component is simple and is made of a material having a mean refractive index less than 1.70. At least one of the rear collective components has its shallower surface facing the front and the power of the rear component preferably lies between 30 per cent and 70 per cent of the power of the whole objective. Tables of data are given. Specification 522,651 is referred to.
GB1096543A 1943-07-06 1943-07-06 Improvements in or relating to optical objectives Expired GB566963A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1096543A GB566963A (en) 1943-07-06 1943-07-06 Improvements in or relating to optical objectives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1096543A GB566963A (en) 1943-07-06 1943-07-06 Improvements in or relating to optical objectives

Publications (1)

Publication Number Publication Date
GB566963A true GB566963A (en) 1945-01-22

Family

ID=9977557

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1096543A Expired GB566963A (en) 1943-07-06 1943-07-06 Improvements in or relating to optical objectives

Country Status (1)

Country Link
GB (1) GB566963A (en)

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