CH205918A - Lens diaphragms for double optics, in particular for stereoscopic apparatus. - Google Patents

Lens diaphragms for double optics, in particular for stereoscopic apparatus.

Info

Publication number
CH205918A
CH205918A CH205918DA CH205918A CH 205918 A CH205918 A CH 205918A CH 205918D A CH205918D A CH 205918DA CH 205918 A CH205918 A CH 205918A
Authority
CH
Switzerland
Prior art keywords
cutouts
lens
optics
stereoscopic apparatus
diaphragm
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Zeiss Ikon
Original Assignee
Zeiss Ikon 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 Zeiss Ikon Ag filed Critical Zeiss Ikon Ag
Publication of CH205918A publication Critical patent/CH205918A/en

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Elements Other Than Lenses (AREA)

Description

  

      Objektivblende    für Doppeloptiken, insbesondere für stereoskopische Apparate.    Bei der Aufnahme stereoskopischer Bilder  auf perforiertem Film, insbesondere Schmalfilm  finden bekanntlich Objektive sehr kurzer  Brennweite Verwendung. Die Objektive sind  infolge der verhältnismässig geringen Breite  des Films in sehr geringem Abstand von  einander angeordnet. Der Einbau einer Iris  blende in solche Objektive bereitet infolge  dessen Schwierigkeiten. Um diese zu ver  meiden, weist nach der Erfindung die Objektiv  blende zwei gegenläufig zueinander bewegliche  Scheiben auf, die mit Ausschnitten versehen  sind, die gleichzeitig den Strahlengang beider  Objektive derart beeinflussen, dass eine zen  trale Abblendung jeder Optik erfolgt.  



  In der beiliegenden Zeichnung ist der  Erfindungsgegenstand in einem Ausführungs  beispiel schematisch dargestellt.     Fig.    1 zeigt  die Blende in voller Öffnung,     Fig.    2 zeigt  dieselbe in einer mittleren Stellung.  



  Nach der Zeichnung weist die Blende  für die beiden Objektive 1 und 2 eine  Scheibe 3 mit     tropfenförmig    gestalteten Aus-    schnitten 4 und 5 auf. Eine weitere Scheibe  6 besitzt ebenfalls     tropfenförmig    gestaltete  Ausschnitte 7 und 8, wobei die Spitzen der  zusammenarbeitenden Ausschnitte 4 und 7       bezw.    5 und 8 in der     Offenstellung    der Blende  auf verschiedenen Seiten der für beide Op  tiken gemeinsamen Mittelebene liegen. Die  Mitte der von zwei zusammenarbeitenden  Ausschnitten gebildeten Öffnung liegt stets  annähernd vor der Mitte des entsprechen  den Objektivs, das daher zentral abgeblendet  wird.

   Der Antrieb der Scheiben 3 und 6  geschieht in gegenläufigem Sinne vom Zahn  rad 9 aus, wobei der Antrieb der Scheibe 3  über ein Zahnrad 10 erfolgt, welches mit  dem Zahnrad 9 einerseits und der Scheibe 3  anderseits in     Eingriff    steht. 11 ist die zwi  schen den beiden Objektiven 1 und 2 gela  gerte Achse, um die sich die beiden Scheiben  3 und 6 drehen. Vor den Objektiver. 1 und 2  sind in an sich bekannter Weise Prismen  im Augenabstand angeordnet, die das 'zu  photographierende Objekt in die beiden      Objektive reflektieren. Der Einfachheit halber  sind die Prismen in der Zeichnung fortge  lassen.



      Lens diaphragms for double optics, in particular for stereoscopic apparatus. When recording stereoscopic images on perforated film, in particular narrow film, it is known that objectives of very short focal lengths are used. Due to the relatively small width of the film, the objectives are arranged at a very short distance from one another. The installation of an iris diaphragm in such lenses causes difficulties as a result. To avoid this ver, according to the invention, the lens aperture on two oppositely movable discs, which are provided with cutouts that simultaneously influence the beam path of both lenses in such a way that a central dimming of each lens takes place.



  In the accompanying drawing, the subject matter of the invention is shown schematically in one embodiment, for example. Fig. 1 shows the diaphragm in full opening, Fig. 2 shows the same in a middle position.



  According to the drawing, the diaphragm for the two objectives 1 and 2 has a disk 3 with cutouts 4 and 5 in the shape of drops. Another disc 6 also has teardrop-shaped cutouts 7 and 8, the tips of the cooperating cutouts 4 and 7 respectively. 5 and 8 are in the open position of the diaphragm on different sides of the common center plane for both optics. The center of the opening formed by two cooperating cutouts is always approximately in front of the center of the corresponding lens, which is therefore blocked centrally.

   The drive of the discs 3 and 6 happens in the opposite direction from the toothed wheel 9, the drive of the disc 3 takes place via a gear 10 which is in engagement with the gear 9 on the one hand and the disc 3 on the other. 11 is the axis between the two lenses 1 and 2, around which the two disks 3 and 6 rotate. In front of the lens. 1 and 2 prisms are arranged in a manner known per se at eye distance, which reflect the object to be photographed into the two lenses. For the sake of simplicity, the prisms have been omitted from the drawing.

Claims (1)

PATENTANSPRUCH: Objektivblende für Doppeloptiken, insbe sondere für stereoskopische Apparate, dadurch gekennzeichnet, dass dieselbe zwei gegenläufig zueinander bewegliche Scheiben aufweist, mit Ausschnitten, die gleichzeitig den Strahlen gang beider Objektive derart beeinflussen, dass eine zentrale Abblendung jeder Optik erfolgt. PATENT CLAIM: Lens diaphragm for double optics, in particular special for stereoscopic apparatus, characterized in that the same has two disks movable in opposite directions to one another, with cutouts that simultaneously influence the beam path of both lenses in such a way that each optic is dimmed centrally. UNTERANSPRUCH: Objektivblende nach Patentanspruch, da durch gekennzeichnet, dass die Ausschnitte der gegenläufig zueinander beweglichen Schei ben tropfenförmige Gestalt besitzen und die Spitzen je zwei zusammenarbeitender Aus schnitte in der Offenstellung der Blende auf verschiedenen Seiten der für beide Optiken gemeinsamen Drittelebene liegen. SUBSTANTIAL CLAIM: Lens diaphragm according to claim, characterized in that the cutouts of the mutually opposing panes have a teardrop-shaped shape and the tips of two cooperating cutouts in the open position of the diaphragm lie on different sides of the third plane common to both optics.
CH205918D 1937-09-21 1938-08-09 Lens diaphragms for double optics, in particular for stereoscopic apparatus. CH205918A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE205918X 1937-09-21

Publications (1)

Publication Number Publication Date
CH205918A true CH205918A (en) 1939-07-15

Family

ID=5789692

Family Applications (1)

Application Number Title Priority Date Filing Date
CH205918D CH205918A (en) 1937-09-21 1938-08-09 Lens diaphragms for double optics, in particular for stereoscopic apparatus.

Country Status (1)

Country Link
CH (1) CH205918A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1106165B (en) * 1957-01-07 1961-05-04 Hora Werke G M B H Lens shutter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1106165B (en) * 1957-01-07 1961-05-04 Hora Werke G M B H Lens shutter

Similar Documents

Publication Publication Date Title
CH205918A (en) Lens diaphragms for double optics, in particular for stereoscopic apparatus.
DE2058209A1 (en) Device for the automatic focusing of optical devices
DE550665C (en) Cinema playback device with optical compensation
DE1108066B (en) Finder device connected to the lens of a photographic camera
DE1901008A1 (en) Method and device for the contamination or separation of two bundles of optical rays
DE3739062A1 (en) Plate (screen, pane) made of an optically transparent material, in particular glass
DE2626758C3 (en) Optical viewfinder system for a single lens reflex camera
DE19808099A1 (en) Dichroic pentaprism for separating or combining frequency bands of electromagnetic energy
DE519779C (en) Multiple chamber for recordings from aircraft
CH211502A (en) Aperture for double lenses for taking stereoscopic images.
DE412086C (en) Device for the simultaneous photographing of three partial images
DE717129C (en) Binocular additional device for stroboscopic devices with slit diaphragm
DE1272704B (en) Distance measuring arrangement with large measuring base for single-lens reflex cameras
DE2660036C2 (en) Miniature single lens reflex camera
AT101553B (en) Optical device for three-color photography.
DE1960903A1 (en) Optical device
DE1924016C3 (en) Mount for a multi-lens objective with an iris diaphragm between the lenses
DE1029591B (en) Device for enlarging the depth of field of optical images
DE860314C (en) Device for direct viewing of the recording scene through a cinematographic recording device
DE493759C (en) Device for eliminating flicker in cinematograph images
DE2236505C3 (en) Optical resonator for frequency selection in optical transmitters with broadband emitting stimulable media
DE1131985B (en) Device for successive reproduction of stereoscopic fields
DE586081C (en) Device for viewing a television picture by means of optical systems between the observer's eye and the light source
DE570193C (en) A prism made from a single piece of glass, the beam entry and exit surfaces of which consist of two surfaces each arranged like a roof edge surface
DE620476C (en) Image projector with optical compensation in connection with a light sounder