DE1835201U - OPTICAL SYSTEM OF CHANGING FOCAL LENGTH. - Google Patents

OPTICAL SYSTEM OF CHANGING FOCAL LENGTH.

Info

Publication number
DE1835201U
DE1835201U DE1961Z0007257 DEZ0007257U DE1835201U DE 1835201 U DE1835201 U DE 1835201U DE 1961Z0007257 DE1961Z0007257 DE 1961Z0007257 DE Z0007257 U DEZ0007257 U DE Z0007257U DE 1835201 U DE1835201 U DE 1835201U
Authority
DE
Germany
Prior art keywords
focal length
optical system
lens
changing focal
hind limbs
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
DE1961Z0007257
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.)
Carl Zeiss SMT GmbH
Original Assignee
Carl Zeiss SMT GmbH
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 Carl Zeiss SMT GmbH filed Critical Carl Zeiss SMT GmbH
Priority to DE1961Z0007257 priority Critical patent/DE1835201U/en
Publication of DE1835201U publication Critical patent/DE1835201U/en
Expired legal-status Critical Current

Links

Landscapes

  • Lens Barrels (AREA)

Description

CA T, Mv El,, 8. zwischeji fests-U uid"*IT* ! ntergl, eC Ptisches jstem ve'. andrlche' Bremneie Das -ebrauchsnu&ter betrifft ein optisches Systen vorän" QJ2=hfJ2l ?, -. 0~. ep'l, V : 2], : Xl. g. 8} : +~C. EJ ? ! =. llve~i t, ?, derlicher Brennweite bei welchem zwischen feststehenden Linsen-/ ;''rontglic : c. e : : :'n und Hintergliedrn-. relativ zu di ? sn und gegebenenfalls sueiander axial verechiebliche Linsenglider angeoiejie' sind. Im allgemeinen isT die Re- l. T. tvbewegur dei boi'=-". hwelchen Linsenglieder keine . c--le' ; chfr ; r',-i, 70' : u :. : ;'c<l ge :). 8 S,, 2 : : 1 s : Lr. :. d. Z SteUGrU3 des fiat, dafl zur Be-- ", Un, X--U-'-I-e -3 r f c i t e : L d--Le 5. er Li"serifassuii- leichfHrn. ige ; und : uifc'lgedes, r'. en sind zur Steuerung des Be'egunsblaui icih'rj. ns'"lee vorgesehen, deren Be- oungnicht p'' ?. Uel sur optischen Achse sondern mit ge" legenLich sbarkei Nein su dieser in Führungsnuten zu erfolgen hat. DarXi-t *ßg14J {; sf-ui'h L 7au daß zur Be- 'Ltisung c. ieHer Lin : ? nbewe'. ng verhältnismäßig große Kräfte erfcrderlich snd. llar-verlangt mit IIeuerung'Sjenäß sind die 'r. Eeren flächen der Linsenfassun" gen die diesen zugeordnete Gleithulse und die Führung-- nuten :.' :'. it einen Überzug aus einem Kunststoffe mit geringem Reibungskoeffizienten0 sondere Polytetrafluoräthylen-versehene Man verlangt mit derartigen, überdies korrosionsfesten Überzügen zu überaus geringen Reibungs'.'/iderständen an den Gleitflächen, so daß zurVeränderung der Brennweite eines solchen Systems nur sehr geringe Xräfbe benötigt werden., Das Wesen der Neuerung ist im folgenden anhand eines Ausführungsbeispieles näher erläutert ; Das optische System veränderlicher Brennweite besteht aus einer Gruppe feststehender Linsen 1, welche das Vorderglied bilden, einer ebenfalls feststehenden Linsen- gruppe 2, welche das Hinterglied bildet und zwei Gruppen 3 und 4. welche zwischen den Gruppen 1 und 29 relativ zu diese"und zueinander verschieblich in einer Gleit- hülse 5 angeordnet sind. In dieser Hülse sind für die Linsengrupne 3 und 4-nwei Nuten 6 und'7 vorgesehen, in denen die Fassungen 8 und 9 der beiden Linsengruppen uittels der Fthrungsstifte 10 und 11 geführt werden. Die -io äußeren Flächen 81 innere Fläche 51 der Hülse 5 und die äußeren Flächen 8' und 9' der Linsenfassungen 8 und 9 sowie die Stifte 10 und 11 sind neuerungsgemäß mit einem Kunststoffüberzug versehen. CA T, Mv El ,, 8. zwischeji fests-U uid "* IT *! ntergl, eC Ptisches jstem ve '. andrlche 'Bremneie The consumer feed concerns an optical system. QJ2 = hfJ2l?, -. 0 ~. ep'l, V: 2],: Xl. G. 8}: + ~ C. EJ? ! =. llve ~ it,?, such focal length at which between fixed Lenticular /; '' rontglic: c. e::: 'n and hind limbs. in relation to di? sn and possibly sueiander axially movable Lens gliders are angeoiejie '. In general, the re- l. T. tvmovement dei boi '= - ". Hwhich lens elements none . c - le ';chfr; r ', - i, 70': u:. :; 'c <l ge :). 8 S ,, 2:: 1 s: Lr. :. d. Z SteUGrU3 des fiat, dafl to be ", Un, X - U -'- Ie -3 rfcite: L d - Le 5. he Li "serifassuii- easy. ige; and: uifc'lgedes, r '. en are used to control the Be'egun blue icih'rj. ns'"lee provided, whose loading oungnot p ''?. Uel sur optical axis but with ge " Lay down no need for this in guide grooves has taken place. DarXi-t * ßg14J {; sf-ui'h L 7au that for loading Solution c. ieHer Lin:? nbewe '. ng relatively large forces snd necessary. llar-requires with Renewal 'So are the' r. The surfaces of the lens barrel " the sliding impulses assigned to these and the guidance-- utes:. ' : '. it has a coating of a plastic with little Friction Coefficient0 special polytetrafluoroethylene provided with such, moreover, corrosion-resistant coatings too low friction '.' / iderstands on the sliding surfaces, so that to change the focal length of such a system only very little Xräfbe are required., The essence of the innovation is explained in more detail below using an exemplary embodiment; The variable focal length optical system consists of a group of fixed lenses 1, which form the front member, a likewise fixed lens group 2, which forms the hind limb, and two groups 3 and 4. which between groups 1 and 29 are relative to this "and to each other displaceable in a sliding sleeve 5 are arranged. In this sleeve are for the Lens groups 3 and 4-n two grooves 6 and 7 provided in which frames 8 and 9 of the two lens groups by means of the guide pins 10 and 11. the -io outer surfaces 81 inner surface 51 of the sleeve 5 and the outer surfaces 8 ' and 9 'of the lens mounts 8 and 9 as well as the pins 10 and 11 are provided with a plastic coating according to the innovation.

Claims (1)

Sch.'u.'tzanspru. ch
Optisches System veränderlicher Brennweite bei welchem zwischen feststehenden Linsengliedern (Frontgliedern und Hintergliedern) rela-t Hintergliedern) relativ zu diesen und gegebenenfalls zu- einander axialverschiebliche Linsenglieder angeordnet sind, dadurch gekennzeichnet, daß die Gleitflächen der
Linsenfassungen ? der diesen zugeordneten Gleithülse ? der . jay Führungsnuton und/Führungsstifte mit einem Überzug aus
einem Kunststoff mit geringem Reibungskoeffizienten und hoher Abriebfestigkeit-insbesondere Polytetrafluoräthylen- versehensind.
Sch.'u.'tzanspru. ch
Variable focal length optical system at which between fixed lens members (front members and Hind limbs) rela-t Hind limbs) relative to these and, if necessary, to- axially displaceable lens members arranged to one another are, characterized in that the sliding surfaces of the
Lens mounts? the sliding sleeve assigned to them? the . jay Guide groove and / guide pins with a coating
a plastic with a low coefficient of friction and high abrasion resistance - especially polytetrafluoroethylene- are by mistake.
DE1961Z0007257 1961-05-20 1961-05-20 OPTICAL SYSTEM OF CHANGING FOCAL LENGTH. Expired DE1835201U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1961Z0007257 DE1835201U (en) 1961-05-20 1961-05-20 OPTICAL SYSTEM OF CHANGING FOCAL LENGTH.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1961Z0007257 DE1835201U (en) 1961-05-20 1961-05-20 OPTICAL SYSTEM OF CHANGING FOCAL LENGTH.

Publications (1)

Publication Number Publication Date
DE1835201U true DE1835201U (en) 1961-07-20

Family

ID=32980518

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1961Z0007257 Expired DE1835201U (en) 1961-05-20 1961-05-20 OPTICAL SYSTEM OF CHANGING FOCAL LENGTH.

Country Status (1)

Country Link
DE (1) DE1835201U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1286308B (en) * 1966-09-14 1969-01-02 Asahi Optical Co Ltd Lens changeable focal length

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1286308B (en) * 1966-09-14 1969-01-02 Asahi Optical Co Ltd Lens changeable focal length

Similar Documents

Publication Publication Date Title
DE2617727A1 (en) QUICK FOCUSABLE TELE LENS
EP0262421A1 (en) Projection optics with variable focal distance
DE1772246A1 (en) Optical enlargement system with continuously changeable focal length
DE1949534U (en) ZOOM LENS MOUNT.
DE1835201U (en) OPTICAL SYSTEM OF CHANGING FOCAL LENGTH.
DE3150795A1 (en) WATERPROOF DOUBLE SCOPE
DE1093580B (en) Bright photographic or cinematographic lens with variable focal length
JPS5737308A (en) Zoom lens barrel
JPS5226236A (en) Zoom lens system
DE2159466A1 (en) DEVICE FOR RECORDING SETTING DISTANCE
GB943093A (en) A zoom lens
DE2211275C3 (en) Fast catadioptric lens
DE1733173U (en) LENS GUIDE FOR PHOTOGRAPHIC LENSES.
FR2396987A1 (en) Multidirection, multi-slide projector - uses flat sheets of slides with movable carriages to place slides in optical light path
GB1392224A (en) Zoom lens system
DE2036285A1 (en) Pancratic projection lens
DE2036789C3 (en) Device for holding an optical correction cover in a housing of an image converter or image intensifier tube
DE1103046B (en) Vario lens, preferably Vario attachment system
DE1254456B (en) Camera, in particular television camera
DE2229735C3 (en) Off-axis optical system with at least two separate, coaxially arranged optical elements
DE1472135C (en) Lens for recording and projection
AT229922B (en) TV recording camera
DE1833097U (en) TELEVISION CHAMBER.
DE1797075C3 (en) Articulated bridge for two-eyed observation devices
JPS6433510A (en) Lens barrel of zoom lens