DE494476C - Light protection flap for photographic cameras - Google Patents
Light protection flap for photographic camerasInfo
- 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
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
- G03B11/046—Hoods 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)
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) |
-
0
- DE DER75349D patent/DE494476C/en not_active Expired
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