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GB564816A - Improvements in or relating to optical objectives - Google Patents

Improvements in or relating to optical objectives

Info

Publication number
GB564816A
GB564816A GB504243A GB504243A GB564816A GB 564816 A GB564816 A GB 564816A GB 504243 A GB504243 A GB 504243A GB 504243 A GB504243 A GB 504243A GB 564816 A GB564816 A GB 564816A
Authority
GB
United Kingdom
Prior art keywords
relating
optical objectives
elements
objectives
optical
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
GB504243A
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.)
Kapella Ltd
Original Assignee
Kapella 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 Kapella Ltd filed Critical Kapella Ltd
Priority to GB504243A priority Critical patent/GB564816A/en
Publication of GB564816A publication Critical patent/GB564816A/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)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

564,816. Optical objectives. KAPELLA, Ltd., and WARMISHAM, A. March 29,1943, No. 5042. Addition to 522,651. Drawings to Specification. [Class 97 (i)] The subject-matter is identical with that of Specification 564,815 except that the AbbÚ V numbers of the rear elements of the third and fourth components are between 50 and 60. Complete data for one example in which the elements are made of #-magnesium oxide crystal are set out.
GB504243A 1943-03-29 1943-03-29 Improvements in or relating to optical objectives Expired GB564816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB504243A GB564816A (en) 1943-03-29 1943-03-29 Improvements in or relating to optical objectives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB504243A GB564816A (en) 1943-03-29 1943-03-29 Improvements in or relating to optical objectives

Publications (1)

Publication Number Publication Date
GB564816A true GB564816A (en) 1944-10-13

Family

ID=9788651

Family Applications (1)

Application Number Title Priority Date Filing Date
GB504243A Expired GB564816A (en) 1943-03-29 1943-03-29 Improvements in or relating to optical objectives

Country Status (1)

Country Link
GB (1) GB564816A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4212517A (en) * 1977-03-10 1980-07-15 Olympus Optical Co., Ltd. Photographic lens system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4212517A (en) * 1977-03-10 1980-07-15 Olympus Optical Co., Ltd. Photographic lens system

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