DE1814309U - DEVICE FOR VIEWING IMAGES ON FILM CAMERAS WITH REFLECTIVE VIEWING. - Google Patents

Description

Facility for image viewing on Filiskameras with SLR «

observation.

The invention relates to a device for viewing Film image with cinema camera «» and the invention relates to film cameras with mirror image! ^ Device »

The mirror reflection direction on film cameras has the gate part of the direct processing possibility of a parallax-free Bilaaueschnitt and allows here the possibility of the & ufnah »* ~ objective of the Kaaera on the respective Aafnahaeobject seharfaaste Ilen * over a mostly in% j? «» Position to the optical. Axis stationary reflection mirror "wipe" lens and film web is part of the light deflected onto a screen "the old a microscope like Betrachttiagsoptik is observed" The mirror must be in which the film verdeokt by eICE aperture during transport time of the Fil "ee _f, in the optical path introduced ttnd are 4's beam path during the service "· and exposure time of the Filaes free again" Sm relatively for each * opening of Attfn & hjaeob-jektire correct sharpening "to adjust with security, ground glass mud diffusely be very"

The human Ä «g«, however, requires the observation of the » At least the reproduction of the objects in a more natural way is possible Size, d * h. the optical system of the camera consisting of the taking lens and microscopic film viewing device must have at least the magnification 1 »

For short focal lengths, such as those that occur in particular with narrow files, _f is in the case of a conventional taking lens

Standard focal length f "10" m a magnification of the magnification Matt cover image necessary *

Cinema ordinary and enough diffuse Mattaeheibe now results in a Stachen magnifying a etark magnified focusing screen * grain t the eia detect fine detail impossible, "eight" If aan the TV screen very fine gently, suffering as the safety of focus and one has the impression "as if the adjustment of the distance of the taking lens has hardly any influence on the image sharpness,

This Srfindung aehlägt therefore propose to move the Mattseheibe in their Sbene · Bewgte focusing screens are known below and in the art and provide a very clear picture "that the aerial view of a lens so the without diffuse collection surface with a mikroekopiseh considered objective of contrast and clarity is not inferior

The Srfindung provides min ^ that said ground glass is simultaneously in rigid connection with dsm mirror or mirror prism or other deflecting means, which is inter filet tierend introduced into the beam path of the Aufnahmeobjcktivs between this and the film *

This arrangement is particularly beneficial for "film cameras" with the one Prism, which sits on the slide cover, for the Heflex device

It is used »by means of a slide that covers the» image while the film is being transported »here carries the deflecting mirror baw». the distraction prisaa. Of course, the same advantage also exists ^with normal film recording cameras, because here, by greatly enlarging the image, a more precise focus setting can be ^{achieved: a *}

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Eggs, it is necessary to have the ground glass in general Sehärfeaefeeae of the distracted ». Straiileagaa ^ aa ansubringea, so dall dia screen the movement of the mirror baw «the slider rait * isaeht, Bmr "h & aa move" the screen ia your Sbeae is created a clear cortle © picture ·

Fig _# 1 represents you a usual single-lens reflex eisriciituag? Film camera in cter supervision is * Here the object is, iron de 'recording · "objective 1 on the film 2 shown" Ber film 2 wlrä by FiIaandruc & plate% against the Filmlaufbaha 3 pressed. Eis Prisata 5 »ii irersßiegeltejp Bypothenuse befiactet sioh. ia his version- 8 temporarily iia Äobilduagsstraiileagaag awleehea Obielctiv xma Fil »2 *

The Hefl ^ xbild sirä aaf of the Mattseibe 20 in 4-way version 15- Tied to the FHmbaha 3 or the housing of the camera verbuadea is »Bas Mattöcheibeabilä is about« χηβκ level 1% through the lens 15 »» d 16 i »der Schärfeaebeae 1? of the ecwlare 18 pictured.

In FIGS. 2 and 3, a depth guide form of the discovery is shown, and the ground glass 20 is also in common Version 12 with the deflection prisaa 5 »which again mirrored eiae Hypotheimse has »

Another Λτΐ3 guide «for» the Erfiadaag is shown Xn Fig « k * Here is a prism β deflecting by 90 ° with a matt surface? Tßrsehs "and, as shown in Fig. 2, affixed to the slide 9," the moving "sattsefee disc can of course have a fixed borderline.

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Claims (1)

The illustrated "fiih.riißgeförmeö" only concern the execution of "Spiel * der S ^ finduag" der "2atäl arbitrarily treraehre werdea köaata" also connect and thus the Mattaciieifeeaki ^ ra in an easy way without the need for additional mobility tools for the Terachwindeazn. A & aprU-ehe t 1.) Sjpiegelreflexelariciitai ^: for Flliakaöeras, dadttrch n.öt _t that the as Bildaaffaagfläefe * dleaead * MattsciteilHi on the Re £ lexeinricht «Bg _t die iateraettierejad ia des, Str &! J, leng * sg intervenes between Taissabiiea Jtufufe is. ' l _f dadurstt geken »aeichnet» because the Heflexeimrichtuag eius öinem Prisaa exists _f whose exit surface is aattiart » 3) Spiegelreflexeinrieiitui ^ · oacix claim 1 and Z _{% are} characterized by the fact that the image border, which is missing on the matt lens, is allowed to have an image diaphragm * in the visual acuity and plane of the ocular