GB1221202A - Objective lens - Google Patents

Objective lens

Info

Publication number
GB1221202A
GB1221202A GB2352768A GB2352768A GB1221202A GB 1221202 A GB1221202 A GB 1221202A GB 2352768 A GB2352768 A GB 2352768A GB 2352768 A GB2352768 A GB 2352768A GB 1221202 A GB1221202 A GB 1221202A
Authority
GB
United Kingdom
Prior art keywords
components
objective lens
iii
compound positive
meniscus
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
GB2352768A
Inventor
Donald Perry Feder
Max Reiss
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1221202A publication Critical patent/GB1221202A/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

1,221,202. Objective lens. EASTMAN KODAK CO. May 17, 1968 [May 22, 1967; May 29, 1967], No. 23527/68. Heading G2J. An objective lens consists of four air-spaced optically aligned components I, II, III, IV the front and rear components being simple negative meniscus elements L 1 , L 7 concave toward the centrally located diaphragm, the two inner components II, III being compound positive components encompassing the diaphragm space, the front compound positive components II consisting of a front meniscus element L 2 cemented to a rear biconvex element L 3 , the rear compound positive component III consisting of a front biconcave element L 4 and rear meniscus element L 6 both cemented to a middle biconvex element L 5 . Optical data are given for two examples in both of which the index of refraction of the element L 5 is higher than the indices of refraction of elements L 4 , L 6
GB2352768A 1967-05-22 1968-05-17 Objective lens Expired GB1221202A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63997967A 1967-05-22 1967-05-22
US64183467A 1967-05-29 1967-05-29

Publications (1)

Publication Number Publication Date
GB1221202A true GB1221202A (en) 1971-02-03

Family

ID=27093450

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2352768A Expired GB1221202A (en) 1967-05-22 1968-05-17 Objective lens

Country Status (1)

Country Link
GB (1) GB1221202A (en)

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