DE689690C - Magnetic single lens - Google Patents

Magnetic single lens

Info

Publication number
DE689690C
DE689690C DE1936A0080395 DEA0080395D DE689690C DE 689690 C DE689690 C DE 689690C DE 1936A0080395 DE1936A0080395 DE 1936A0080395 DE A0080395 D DEA0080395 D DE A0080395D DE 689690 C DE689690 C DE 689690C
Authority
DE
Germany
Prior art keywords
lens
single lens
magnetic single
magnetic
pole
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
DE1936A0080395
Other languages
German (de)
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.)
AEG AG
Original Assignee
AEG 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 AEG AG filed Critical AEG AG
Priority to DE1936A0080395 priority Critical patent/DE689690C/en
Application granted granted Critical
Publication of DE689690C publication Critical patent/DE689690C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/64—Magnetic lenses
    • H01J29/68—Magnetic lenses using permanent magnets only

Description

Magnetische Einzellinse Die Erfindung betrifft eine magnetische Einzellinse zur elektroxienöptischen Abbildung, d. h. eine Linse, in der die magnetische Feldstärke auf der -Achse ihr Vorzeichen umkehrt, ähnlich wie dies in der elektrischen. Einzellinse die elektrische Feldstärke tut. Wie bei der -elektrischen Einzellinse ist dabei in der ganzen Linse das Integral über die Feldstärke Null. Während diese Bedingung bei der elektrischen Linse von der Erscheinung begleitet ist, daß zu beide Seiten der Linse das gleiche !elektrische Potential herrscht, hat sie bei der magnetischen Linse zur Folge, daß die Bilddrehung, die dem genannten Integral proportional ist, verschwindet.Magnetic Single Lens The invention relates to a magnetic single lens for electroxia optical imaging, d. H. a lens in which the magnetic field strength on the -axis reverses its sign, similar to this in the electrical. Single lens the electric field strength does. As with the -electric single lens is included in the whole lens the integral over the field strength zero. While this condition in the case of the electric lens it is accompanied by the phenomenon that on both sides the lens has the same electrical potential, it has the magnetic one Lens means that the image rotation, which is proportional to the said integral, disappears.

Eine magnetische Einzellinse kann durch zwei hintereinander angeordnete im entgegengesetzten Sinne vom Strom durchflossene Spulen gebildet werden. Einfacher im Aufbau und- in - der Handhabung (weil weniger Raum beanspruchend) ist die Linse nach der Erfindung, die aus einem ringförmigen Dauermagneten besteht, dessen einer Pol sich auf, der Innenseite des Ringes, dessen anderer Pol sich :auf seiner Außenseite befindet.A single magnetic lens can be replaced by two are formed in the opposite sense of the current flowing coils. Easier in construction and in handling (because it takes up less space) is the lens according to the invention, which consists of an annular permanent magnet, one of which Pole itself on the inside of the ring, the other pole of which is on its outside is located.

Diese Linse kann auch zusammen mit anderen Linsen. aus stromdurchflossenen Spulen oder Dauermagneten Verwendung finden, wie dies in der Abbildung dargestellt ist. Hier ist die Linse i als Dauermagnet ausgebildet, dessen Nordpol sich ,auf der Innenseite des Magneten befindet und dessen Südpol außen liegt, derart, daß dieser einzige Magnet bereits eine Linse mit zwei entgegengesetzten Feldstärken darstellt, wie dies durch die Pfeile auf der Achse angedeutet ist. Durch die Spule 2 wird eine weitere Linse gebildet, deren Feldstärke der benachbarten Feldstärke der Linse i entgegengesetzt gerichtet ist.This lens can also be used together with other lenses. from current-carrying Coils or permanent magnets are used, as shown in the figure is. Here the lens i is designed as a permanent magnet, the north pole of which is on the inside of the magnet is and its south pole is outside, such that this single magnet already has a lens with two opposing field strengths represents, as indicated by the arrows on the axis. Through the coil 2 another lens is formed, the field strength of which is the neighboring field strength the lens i is directed in the opposite direction.

Claims (1)

PATENTANSPRUCÜ: Magnetische Einzellinse, bestehend aus einem ringförmigen Dauermagneten, dessen einer Pol sich auf der Innenseite des Ringes, dessen anderer Pol sich auf der Außenseite befindet.PATENT CLAIM: Magnetic single lens, consisting of a ring-shaped Permanent magnets, one pole of which is on the inside of the ring, the other of which Pole is on the outside.
DE1936A0080395 1936-09-02 1936-09-02 Magnetic single lens Expired DE689690C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1936A0080395 DE689690C (en) 1936-09-02 1936-09-02 Magnetic single lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1936A0080395 DE689690C (en) 1936-09-02 1936-09-02 Magnetic single lens

Publications (1)

Publication Number Publication Date
DE689690C true DE689690C (en) 1940-04-01

Family

ID=6948022

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1936A0080395 Expired DE689690C (en) 1936-09-02 1936-09-02 Magnetic single lens

Country Status (1)

Country Link
DE (1) DE689690C (en)

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