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DE910142C - Lens hood for photographic purposes - Google Patents

Lens hood for photographic purposes

Info

Publication number
DE910142C
DE910142C DEA15655A DEA0015655A DE910142C DE 910142 C DE910142 C DE 910142C DE A15655 A DEA15655 A DE A15655A DE A0015655 A DEA0015655 A DE A0015655A DE 910142 C DE910142 C DE 910142C
Authority
DE
Germany
Prior art keywords
lens
lens hood
hood
photographic purposes
closed
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
DEA15655A
Other languages
German (de)
Inventor
Dr-Ing Eugen Armbruster
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.)
APP und KAMERABAU GmbH
Original Assignee
APP und KAMERABAU 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 APP und KAMERABAU GmbH filed Critical APP und KAMERABAU GmbH
Priority to DEA15655A priority Critical patent/DE910142C/en
Application granted granted Critical
Publication of DE910142C publication Critical patent/DE910142C/en
Expired legal-status Critical Current

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
    • G03B11/00—Filters or other obturators specially adapted for photographic purposes
    • G03B11/04—Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
    • G03B11/045—Lens hoods or shields

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Blocking Light For Cameras (AREA)

Description

Die Erfindung betrifft eine Gegenlichtblende, die gleichzeitig als Obj ektiv schutz gegen Verschmutzung des Objektivs verwendet werden kann. Zu diesem Zweck ist in die Fassung der Gegenlichtblende, mit der diese auf dem Objektiv befestigt wird, eine vollständig schließende Irisblende eingebaut, die in der Arbeitslage der Gegenlichtblende geöffnet und in der Transportlage geschlossen werden kann. Die Gegenlichtblende selbst wird zweckmäßigerweise aus flexiblem Material berge= stellt, so daß sie, ohne vom Objektiv abgenommen zu werden, in bekannter Weise über das Objektiv umgestülpt werden kann. Die Gegenlichtblende kann jedoch auch in starrer Bauart ausgeführt werden, wobei sie dann für den Transport und den Schutz des Objektivs umgekehrt in bekannter Weise auf dem Objektiv befestigt wird. Eine topfförmige Gegenlichtblende aus starrem Werkstoff mit einem an der freien Stirnseite angebrachten Klappdeckel, der die Gegenlichtblende abzuschließen gestattet, ist bereits bekannt. Diese Blende ist verhältnismäßig sperrig und läßt sich außerdem wegen der Klappdeckelanordnung nicht so gestalten, daß sie bei geschlossener Kamera am Objektiv verbleiben kann. In Abb. i ist die Gegenlichtblende im Schnitt und in Arbeitslage bei offener Irisblende gezeichnet; in Abb. a ist die Gegenlichtblende geschlossen und in Transportlage über das Objektiv umgestülpt dargestellt.The invention relates to a lens hood, which at the same time as Objective protection against soiling of the lens can be used. To this Purpose is in the mount of the lens hood with which it is attached to the lens is installed, a fully closing iris diaphragm, which is in the working position the lens hood can be opened and closed in the transport position. The lens hood itself is expediently made of flexible material berge = so that they can be transferred in a known manner without being removed from the lens the lens can be turned inside out. The lens hood can, however, also be more rigid Design, they are then used for the transport and protection of the lens conversely, is attached to the lens in a known manner. A cup-shaped lens hood made of rigid material with a hinged cover attached to the free face, which allows the lens hood to be closed is already known. This aperture is relatively bulky and can also be because of the hinged lid arrangement Do not design it so that it can remain on the lens when the camera is closed. In Fig. I, the lens hood is in section and in the working position with the iris diaphragm open drawn; In Fig. a, the lens hood is closed and in the transport position shown upside down over the lens.

In der gezeichneten Ausführungsform wird die Gegenlichtblende mit dem Gewindeansatz i in das Objektiv :2 eingeschraubt. Die Fassung der Gegenlichtblende enthält die Irislaniellen 3, die in bekannter Weise einerseits in dem Fassungsteil i und andererseits in dem Verstellring 4 gehalten werden. Mittels des über den Fassungsrand herausragenden Griffes 4a kann der Ring zentrisch verdreht werden, wobei die Irislamellen sich schließen bzw. öffnen. Die eigentliche Gegenlichtblende 5 kann beim Transport der Kamera bei der gezeichneten Ausführung der Gegenlichtblende umgestülpt werden, nachdem die Irisblende geschlossen ist.In the embodiment shown, the lens hood is with the thread attachment i in the lens: 2 screwed. The mount of the lens hood contains the iris planar 3, which in a known manner on the one hand in the mounting part i and, on the other hand, are held in the adjusting ring 4. By means of the over the edge of the frame protruding handle 4a, the ring can be rotated centrically, whereby the iris lamellae close or open. The actual lens hood 5 can during transport the camera can be turned inside out in the version shown with the lens hood, after the iris diaphragm is closed.

Claims (2)

PATENTANSPRÜCHE: i. Gegenlichtblende für fotografische Zwecke, dadurch gekennzeichnet, daß in die Fassung der Gegenlichtblende eine vollständig schließende Irisblende. zum Schutz des Objektivs eingebaut ist. PATENT CLAIMS: i. Lens hood for photographic purposes, characterized in that a completely closing iris diaphragm is inserted into the mount of the lens hood. is built in to protect the lens. 2. Gegenlichtblende für fotografische Zwecke nach Anspruch i, dadurch gekennzeichnet, daß die Gegenlichtblende aus flexiblem Material besteht und über das Objektiv umgestülpt werden kann.2. Lens hood for photographic purposes according to claim i, characterized in that the lens hood consists of flexible material and can be turned inside out over the lens.
DEA15655A 1952-04-30 1952-04-30 Lens hood for photographic purposes Expired DE910142C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA15655A DE910142C (en) 1952-04-30 1952-04-30 Lens hood for photographic purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA15655A DE910142C (en) 1952-04-30 1952-04-30 Lens hood for photographic purposes

Publications (1)

Publication Number Publication Date
DE910142C true DE910142C (en) 1954-04-29

Family

ID=6923475

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA15655A Expired DE910142C (en) 1952-04-30 1952-04-30 Lens hood for photographic purposes

Country Status (1)

Country Link
DE (1) DE910142C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914915A (en) * 1958-02-11 1959-12-01 United Aircraft Corp Radiantly cooled inlet
DE1091858B (en) * 1956-02-22 1960-10-27 Micro Prec Products Ltd Anti-reflective wall cladding for optical devices
US3015982A (en) * 1959-04-02 1962-01-09 Polaroid Corp Lens shade
US3045550A (en) * 1958-09-27 1962-07-24 Novoflex Fotogeratebau Karl Mu Telescoping telephoto lens
US3594062A (en) * 1968-04-11 1971-07-20 Rank Organisation Ltd Sighting telescope with flexible eyeguard

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1091858B (en) * 1956-02-22 1960-10-27 Micro Prec Products Ltd Anti-reflective wall cladding for optical devices
US2914915A (en) * 1958-02-11 1959-12-01 United Aircraft Corp Radiantly cooled inlet
US3045550A (en) * 1958-09-27 1962-07-24 Novoflex Fotogeratebau Karl Mu Telescoping telephoto lens
US3015982A (en) * 1959-04-02 1962-01-09 Polaroid Corp Lens shade
US3594062A (en) * 1968-04-11 1971-07-20 Rank Organisation Ltd Sighting telescope with flexible eyeguard

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