DE494476C - Light protection flap for photographic cameras - Google Patents

Light protection flap for photographic cameras

Info

Publication number
DE494476C
DE494476C DER75349D DER0075349D DE494476C DE 494476 C DE494476 C DE 494476C DE R75349 D DER75349 D DE R75349D DE R0075349 D DER0075349 D DE R0075349D DE 494476 C DE494476 C DE 494476C
Authority
DE
Germany
Prior art keywords
light protection
photographic cameras
flap
protection flap
lens
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
DER75349D
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.)
KONRAD ROESS
OPTISCHE FABRIK
Original Assignee
KONRAD ROESS
OPTISCHE FABRIK
Publication date
Priority to DER75349D priority Critical patent/DE494476C/en
Application granted granted Critical
Publication of DE494476C publication Critical patent/DE494476C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B11/00Filters or other obturators specially adapted for photographic purposes
    • G03B11/04Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
    • G03B11/046Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids for viewfinders or eyepieces

Landscapes

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

Description

Lichtschutzklappe für photographische Kameras Es sind Lichtschutzklappen für photographische Kameras bekannt, die mit einer Rückwand versehen sind, in welcher eine Linse zur Betrachtung des Mattscheibenbildes unlösbar befestigt ist. Um beim Kauf eines Apparates eine den Augen des Käufers entsprechende Linse sogleich in die Rückwand einsetzen oder die vorhandene Linse auswechseln zu können, besteht nach der Erfindung die die Rückwand bildende Klappe aus einer Hartgummischeibe, die bekanntlich in der Wärme leicht formbar ist.Light protection flap for photographic cameras There are light protection flaps known for photographic cameras which are provided with a rear wall in which a lens for viewing the focusing screen image is permanently attached. To at the Buy a device with a lens that matches the buyer's eyes to be able to insert the back wall or replace the existing lens according to the invention, the flap forming the rear wall made of a hard rubber disc, which is known to be easily malleable in the heat.

Auf der Zeichnung ist die Erfindung in einem Ausführungsbeispiel dargestellt. Es zeigen in schaubildlicher Darstellung den Mattscheibenrahmen einer Kamera, die Abb. i in völlig aufgeklapptem und die Abb. 2 in halb zugeklapptem Zustand.The invention is shown in an exemplary embodiment in the drawing. They show a diagrammatic representation of the focusing screen frame of a camera that Fig. I in fully opened and Fig. 2 in half closed position.

An einem Mattscheibenrahmen i mit Führungsnuten 2 für die am Kameragehäuse befindlichen Kassettenleisten ist in der üblichen Weise ein Abblendschirm, bestehend aus einer steifen, mit einer Fingerschlaufe 3 versehenen Klappwand q., zwei Faltwänden 5 und einem verschwenkbaren Decke16 vorgesehen, der in der eingeklappten Lage durch einen am Mattscheibenrahmen i befestigten Verschluß 7 verriegelt gehalten wird. Vor dem Abblendschirm q., 5 ist am Klappdeckel 6 eine aus Hartgummi o. dgl. bestehende Rückwand 8 um Federscharniere 9 verschwenkbar angeordnet, die in ihrem mittleren Teil eine leicht auswechselbare Linse io trägt.On a ground glass frame i with guide grooves 2 for those on the camera housing located cassette strips is in the usual way a screen, consisting from a stiff, with a finger loop 3 provided folding wall q., two folding walls 5 and a pivotable cover 16 is provided, which in the folded position by a shutter 7 attached to the ground glass frame i is held locked. In front of the anti-glare screen q., 5 is a hard rubber o. The like. Existing on the hinged cover 6 Rear wall 8 arranged pivotably around spring hinges 9, which in its middle Part carries an easily exchangeable lens io.

Die Handhabung der Vorrichtung ist folgende: Im Außergebrauchszustande ist der Deckel q. gegen die in der Rahmenebene liegende Mattscheibe geklappt, die Wände 5 sind zusammengefaltet, und der Deckel 6 wird durch das Schloß 7 gehalten. Dabei liegt die Wand 8, mit gespannten Scharnierfedern 9 gegen den Deckel 6 geschwenkt, vor den gefalteten Wänden 5.The handling of the device is as follows: When not in use is the lid q. folded against the ground glass lying in the frame plane, the Walls 5 are folded up and the lid 6 is held by the lock 7. The wall 8 is pivoted with tensioned hinge springs 9 against the cover 6, in front of the folded walls 5.

Nach Lösen der Verriegelung 7 schnellt der freigegebene Deckel 6 durch die Spannung der unter ihm liegenden Schirmteile q., 5 und unter der Wirkung der sich entspannenden Scharnierfedern auf, wobei die Wände 5 teilweise entfaltet werden. Wird hierauf der Deckel 6 geöffnet, so springt die Wand 8 selbsttätig in ihre Gebrauchsstellung, also parallel zur Mattscheibe (Abb. i). Hierauf wird die Klappe 4 an der Schlaufe 3 erfaßt und in eine zum Deckel 6 parallele Lage gezogen. Mittels der dem Auge des Käufers entsprechenden Linse iö läßt sich nunmehr der aufzunehmende Gegenstand auf der Mattscheibe leicht und insbesondere ohne Anstrengung für das Auge scharf einstellen.After releasing the lock 7, the released cover 6 snaps through the tension of the screen parts lying under it q., 5 and under the action of the relaxing hinge springs, the walls 5 being partially unfolded. If the cover 6 is then opened, the wall 8 automatically jumps into its position of use, i.e. parallel to the ground glass (Fig. i). The flap 4 is then attached to the loop 3 detected and pulled into a position parallel to the cover 6. By means of the eye of the The object to be recorded can now be seen on the lens corresponding to the buyer focus on the focusing screen easily and, in particular, without straining the eye.

Die Erfindung läßt sich auch für Kopierapparate, Vergrößerungsapparate u. dgl. mit gleichem Erfolg verwenden. Die die Einstelllinse tragende Platte kann ohne Schwierigkeiten an jedem schon vorhandenen Mattscheibenrahmen angebracht werden.The invention can also be used for copiers and enlargers and the like with equal success. The plate carrying the adjustment lens can can be attached to any existing ground glass frame without difficulty.

Claims (1)

PATENTANSPRUCH: Lichtschutzklappe für photographische Kameras mit einer in die Klappe eingesetzten Linse, dadurch gekennzeichnet, daß die Klappe (8) aus einer Hartgummischeibe besteht, die das leichte Einsetzen und Auswechseln von Linsen verschiedener Brennweite gestattet.PATENT CLAIM: Light protection flap for photographic cameras with a lens inserted into the flap, characterized in that the flap (8) consists of a hard rubber washer that makes it easy to insert and replace Lenses of different focal lengths permitted.
DER75349D Light protection flap for photographic cameras Expired DE494476C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER75349D DE494476C (en) Light protection flap for photographic cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER75349D DE494476C (en) Light protection flap for photographic cameras

Publications (1)

Publication Number Publication Date
DE494476C true DE494476C (en) 1930-03-24

Family

ID=7415050

Family Applications (1)

Application Number Title Priority Date Filing Date
DER75349D Expired DE494476C (en) Light protection flap for photographic cameras

Country Status (1)

Country Link
DE (1) DE494476C (en)

Similar Documents

Publication Publication Date Title
DE494476C (en) Light protection flap for photographic cameras
DE675275C (en) Light shaft designed as a frame finder for overhead viewers of photographic cameras
DE863746C (en) Single-lens reflex camera
DE586031C (en) Binoculars associated with a photographic camera
DE1002614B (en) Viewfinder arrangement for reflex cameras
DE375688C (en) Optical system for recording or reproducing fixed or moving images in natural colors
DE637655C (en) Lens caps for photographic cameras
DE362597C (en) Light protection cap for photographic cameras
DE441202C (en) Device for the production of photographic and cinematographic recordings of differently distant parts of the object that can be combined into one image by means of a mirror
DE617907C (en) Photographic chamber with masks arranged over the viewfinder image area
DE563316C (en) Cinematographic camera that is also suitable for film presentations
DE583745C (en) Cinematographic recording apparatus
DE555652C (en) Collapsible mirror camera
DE330894C (en) Square sales frame for using rectangular plates and sheet films with square roll film chambers
DE345836C (en) Reflex camera
DE611835C (en) Photo or cinema camera which is arranged between the two tubes of binoculars
DE2353709C3 (en) Foldable metal guard shaft
DE351176C (en) Cassette for several photographs next to each other
DE926712C (en) Cinematographic recording device for the optional production of stereo images and flat screens
DE2227278A1 (en) MIRROR REFLEX CAMERA
DE595380C (en) Photographic camera with a viewfinder lens that can be hinged in front of the lens as protection
DE616159C (en) Photographic camera with a collapsible light protection shaft that shields a viewfinder screen
DE803979C (en) Fire protection arrangement on cinema projectors
DE617589C (en) Folding camera with brilliant viewfinder
DE481511C (en) Folding photographic camera in wallet shape