GB723544A - Objective - Google Patents

Objective

Info

Publication number
GB723544A
GB723544A GB27053/51A GB2705351A GB723544A GB 723544 A GB723544 A GB 723544A GB 27053/51 A GB27053/51 A GB 27053/51A GB 2705351 A GB2705351 A GB 2705351A GB 723544 A GB723544 A GB 723544A
Authority
GB
United Kingdom
Prior art keywords
cemented
refractive index
component
radius
positive
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
GB27053/51A
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.)
ZEISS OPTON OPTISCHE WERKE
Original Assignee
ZEISS OPTON OPTISCHE WERKE
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 ZEISS OPTON OPTISCHE WERKE filed Critical ZEISS OPTON OPTISCHE WERKE
Publication of GB723544A publication Critical patent/GB723544A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only

Landscapes

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

Abstract

723,544. Optical objectives. ZEISS-OPTON OPTI8 WERKE OBERKOCHEN GES. Nov. 19, 1951 [Nov. 25, 1950], No. 27053/51. Class 97 (1). The objective consists of a front simple positive lens 1 followed by a dispersing meniscus doublet 2 convex towards the front with its rear surface having a radius of curvature less than 0.33 of the focal length F and consisting of a positive element cemented at its rear to a negative element of higher refractive index, a positive doublet 3 concave towards the front and consisting of a negative lens cemented to a positive lens of higher refractive index with the cemented surface convex towards the front, and by a dispersing meniscus doublet 4 which is concave towards the front and is made up of a positive lens cemented to a negative lens of lower refractive index with the cemented surface convex towards the rear and having a radius of curvature less than 0.9 of the radius of the front surface of this component. The refractive index difference in the fourth component may amount to 0.10. Preferably also the distance from the front surface of the third component to the rear surface of the objective lies between 0.3 F and 0.66 F and the axial thickness of the second component is between 0.08 and 0.18 F.
GB27053/51A 1950-11-25 1951-11-19 Objective Expired GB723544A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE296717X 1950-11-25

Publications (1)

Publication Number Publication Date
GB723544A true GB723544A (en) 1955-02-09

Family

ID=6090450

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27053/51A Expired GB723544A (en) 1950-11-25 1951-11-19 Objective

Country Status (3)

Country Link
CH (1) CH296717A (en)
FR (1) FR1045307A (en)
GB (1) GB723544A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1100314B (en) * 1957-02-13 1961-02-23 Taylor Projection lens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1100314B (en) * 1957-02-13 1961-02-23 Taylor Projection lens

Also Published As

Publication number Publication date
FR1045307A (en) 1953-11-25
CH296717A (en) 1954-02-28

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