GB1321887A - Galilean-type telescope system - Google Patents

Galilean-type telescope system

Info

Publication number
GB1321887A
GB1321887A GB3228170A GB3228170A GB1321887A GB 1321887 A GB1321887 A GB 1321887A GB 3228170 A GB3228170 A GB 3228170A GB 3228170 A GB3228170 A GB 3228170A GB 1321887 A GB1321887 A GB 1321887A
Authority
GB
United Kingdom
Prior art keywords
negative
lens
positive
refractive power
members
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
GB3228170A
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.)
Leica Geosystems AG
Original Assignee
Wild Heerbrugg AG
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 Wild Heerbrugg AG filed Critical Wild Heerbrugg AG
Publication of GB1321887A publication Critical patent/GB1321887A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices

Abstract

1321887 Telescope lens systems L BERTELE 2 July 1970 [3 July 1969] 32281/70 Heading G2J A Galilean-type telescope system consists of at least five lens members wherein a negative system component A consisting of at least two air-spaced lens members, the member nearest the eye side having negative refractive power; and a positive system component B comprising at least three air-spaced lens members are separated by an air-gap L 2 . The positive system component has the member disposed closest to the negative system with negative refractive power, and the other members of positive refractive power, at least the lens members having positive refractive power being separated by airgaps. The first lens member of the negative component may have its most strongly curved surface arranged to face the eye in use, and may be two cemented lenses L 1 and L 2 . The negative lens member in the positive system may be cemented doublet L 5 , L 6 , and the refractive index on the eye side of this cemented surface may be larger than that on the object side Optical date are given for four examples.
GB3228170A 1969-07-03 1970-07-02 Galilean-type telescope system Expired GB1321887A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1030169A CH512748A (en) 1969-07-03 1969-07-03 Telescopic system of Galilean design

Publications (1)

Publication Number Publication Date
GB1321887A true GB1321887A (en) 1973-07-04

Family

ID=4361709

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3228170A Expired GB1321887A (en) 1969-07-03 1970-07-02 Galilean-type telescope system

Country Status (6)

Country Link
AT (1) AT301207B (en)
CA (1) CA946193A (en)
CH (1) CH512748A (en)
DE (1) DE2032130A1 (en)
GB (1) GB1321887A (en)
IT (1) IT942520B (en)

Also Published As

Publication number Publication date
DE2032130A1 (en) 1972-01-27
CA946193A (en) 1974-04-30
AT301207B (en) 1972-08-25
CH512748A (en) 1971-09-15
IT942520B (en) 1973-04-02

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees