DE741844C - Reflex camera with two mirrors set at an angle to each other - Google Patents

Reflex camera with two mirrors set at an angle to each other

Info

Publication number
DE741844C
DE741844C DER105136D DER0105136D DE741844C DE 741844 C DE741844 C DE 741844C DE R105136 D DER105136 D DE R105136D DE R0105136 D DER0105136 D DE R0105136D DE 741844 C DE741844 C DE 741844C
Authority
DE
Germany
Prior art keywords
angle
reflex camera
mirror
mirrors
mirrors set
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
DER105136D
Other languages
German (de)
Inventor
Arno Rothe
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DER105136D priority Critical patent/DE741844C/en
Application granted granted Critical
Publication of DE741844C publication Critical patent/DE741844C/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
    • G03B19/00—Cameras
    • G03B19/02—Still-picture cameras
    • G03B19/12—Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Telescopes (AREA)

Description

Reflexkamera mit zwei im Winkel zueinander gestellten Spiegeln Die Erfindung betrifft eine Reflexkamera mit zwei zwecks Beobachtung des Mattscheibenbildes in Augenhöhe im Winkel von .15' zueinander gestellten Spiegeln. Auch kann man mit dieser Sucherart über die Köpfe oder um die Ecke photographieren.Reflex camera with two mirrors set at an angle to one another The invention relates to a reflex camera with two for the purpose of observing the focusing screen image mirrors placed at eye level at an angle of .15 'to each other. You can also use photograph overhead or around corners using this type of viewfinder.

Gemäß der Erfindung ist der obere Spiegel derart auf den anderen Spiegel zu klappen, daß der unmittelbare Einblick von oben freigegeben 'wird. Infolgedessen ist es möglich. das Mattscheibenbild i:n beiden Blickrichtungen zu beobachten, ohne daß der ganze Spiegelaufsatz abgenommen oder aufgesetzt zu werden braucht.According to the invention, the upper mirror is like this on top of the other mirror to work so that the immediate view from above is released '. Consequently Is it possible. to observe the focusing screen image in both directions without that the whole mirror attachment needs to be removed or put on.

In der Zeichnung sind beide Ei:nblicksarten wiedergegeben.Both types of vision are shown in the drawing.

Fig. i zeigt die Spiegelstellung beim Einblick in Augenhöhe. Das Auge blickt durch die Linse B auf das voll sichtbare Bild. Die Blickrichtung wird hierbei um einen rechten Winkel durch die beiden Spiegel D und C nach der Mattscheibe G, die aus :einer unterseitig mattierten Visolettlupe besteht, gebrochen. Wie klar ersichtlich, ist die Blickrichtung von der Linse B nach dem Spiegel D die gleiche wie der Strahleneinfall in das Objektiv der Reflexkamera F. Der Spiegel C wird durch eine Sperre in der jeweiligen Gebrauchslage gehalten.Fig. I shows the mirror position when looking at eye level. The eye looks through lens B at the fully visible image. The direction of view is here at a right angle through the two mirrors D and C to the focusing screen G, which consists of: a visolet magnifying glass with a matt underside, broken. How clear As can be seen, the line of sight from lens B to mirror D is the same like the incidence of rays into the lens of the reflex camera F. The mirror C is through a lock held in the respective position of use.

Fig.2 veranschaulicht die zweite Einblicksart in diesem Sucher. Durch Schwenkung des Spiegels C um den Drehpunkt E wird der Blich von der LinseA nach der Mattscheibe frei. Die Linse A kann rund oder viereckig zuggeschnitten sein sowie je nach Wunsch eine stärkere oder schwärchere Vergrößerung besitzen, angepaßt für das volle Mattscheibeiibild oder nur einen Teil desselben bei starker Vergrößerung.Fig. 2 illustrates the second type of viewing in this viewfinder. By Pivoting the mirror C around the pivot point E is the view of the lens A after the screen free. The lens A can be drawn-cut round or square as well have a higher or lower magnification as desired, adapted for the full screen image or only part of it at high magnification.

Da dieser Sucher allseitig geschlossen ist, dringen Staub und Regen nicht ein..Since this viewfinder is closed on all sides, dust and rain penetrate not a..

Claims (1)

PATENTANSPRUCH: Reflexkamera mit zwei zwecks Beol)achtung des Mattscheibenbildes in Augenhöhe im Winkel von ¢5° zueinander gestellten Spiegeln, dadurch gekennzeichnet, daß der obere Spiegel (C) derart auf den anderen Spiegel (D) zu klappen ist, daß der immittelbare Einblick von oben freigegeben wird. Zur Abgrenzung des Anmeldungsgegenstandes vom Stand der Technik sind im Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden: deutsche Patentschrift Nr. 3d.5 ä36. 43026i# 556783. 630203, 647340, 675275-, Zeitschrift Kinot-echni!k (i928), Heft i, S. 21; Handbuch der wissenschaftlichen und angewandten Photographie Bd. 11, S. 185 und 186, S. 152 und 153.PATENT CLAIM: Reflex camera with two mirrors placed at eye level at an angle of ¢ 5 ° to one another for the purpose of observing the ground glass image, characterized in that the upper mirror (C) is to be folded onto the other mirror (D) in such a way that the immediate view from is released above. To distinguish the subject of the application from the state of the art, the following publications were taken into account in the granting procedure: German patent specification no. 3d.5-36. 43026i # 556783 . 630203, 647340, 675275-, magazine Kinot-echni! K (1928), issue i, p. 21; Handbook of Scientific and Applied Photography Vol. 11, pp. 185 and 186, pp. 152 and 153.
DER105136D 1939-05-05 1939-05-05 Reflex camera with two mirrors set at an angle to each other Expired DE741844C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER105136D DE741844C (en) 1939-05-05 1939-05-05 Reflex camera with two mirrors set at an angle to each other

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER105136D DE741844C (en) 1939-05-05 1939-05-05 Reflex camera with two mirrors set at an angle to each other

Publications (1)

Publication Number Publication Date
DE741844C true DE741844C (en) 1943-11-18

Family

ID=7421134

Family Applications (1)

Application Number Title Priority Date Filing Date
DER105136D Expired DE741844C (en) 1939-05-05 1939-05-05 Reflex camera with two mirrors set at an angle to each other

Country Status (1)

Country Link
DE (1) DE741844C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE900410C (en) * 1948-12-31 1953-12-28 Fritz Meyer Single-lens reflex camera
DE1149240B (en) * 1955-11-30 1963-05-22 Agfa Ag SLR camera
US3590683A (en) * 1968-05-30 1971-07-06 Ricoh Kk Eye level and breast level viewing selection finder system for single lens reflex camera
US3651735A (en) * 1970-07-20 1972-03-28 Ricoh Kk View-finder for single lens reflex cameras
US3819255A (en) * 1972-06-19 1974-06-25 Nippon Kogaku Kk Eye-level and waist-level viewfinder
US4332446A (en) * 1979-06-29 1982-06-01 Canon Kabushiki Kaisha View finder for camera

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE345836C (en) * 1920-08-28 1921-12-19 Rollei Werke Franke Heidecke Reflex camera
DE430261C (en) * 1926-06-14 Wilhelm Krosse Reflex camera
DE556783C (en) * 1933-01-28 Kurt Staudinger Device for reflex cameras
DE630203C (en) * 1936-05-22 Otto Berning & Co See-through angle and top view finder
DE647340C (en) * 1936-02-16 1937-07-02 Paul Franke Light shaft for viewfinder of photographic cameras
DE675275C (en) * 1937-08-26 1939-05-04 Franke & Heidecke Fabrik Photo Light shaft designed as a frame finder for overhead viewers of photographic cameras

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE430261C (en) * 1926-06-14 Wilhelm Krosse Reflex camera
DE556783C (en) * 1933-01-28 Kurt Staudinger Device for reflex cameras
DE630203C (en) * 1936-05-22 Otto Berning & Co See-through angle and top view finder
DE345836C (en) * 1920-08-28 1921-12-19 Rollei Werke Franke Heidecke Reflex camera
DE647340C (en) * 1936-02-16 1937-07-02 Paul Franke Light shaft for viewfinder of photographic cameras
DE675275C (en) * 1937-08-26 1939-05-04 Franke & Heidecke Fabrik Photo Light shaft designed as a frame finder for overhead viewers of photographic cameras

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE900410C (en) * 1948-12-31 1953-12-28 Fritz Meyer Single-lens reflex camera
DE1149240B (en) * 1955-11-30 1963-05-22 Agfa Ag SLR camera
US3590683A (en) * 1968-05-30 1971-07-06 Ricoh Kk Eye level and breast level viewing selection finder system for single lens reflex camera
US3651735A (en) * 1970-07-20 1972-03-28 Ricoh Kk View-finder for single lens reflex cameras
US3819255A (en) * 1972-06-19 1974-06-25 Nippon Kogaku Kk Eye-level and waist-level viewfinder
US4332446A (en) * 1979-06-29 1982-06-01 Canon Kabushiki Kaisha View finder for camera

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