DE1704261U - GALILIAN DESIGN MIRROR FINDERS FOR PHOTOGRAPHIC AND KINEMATOGRAPHIC CAMERAS. - Google Patents

Description

Kodak Public Company
Stuttgart·

Current Zoh. Σ 9160 / 57a 5m.

Abusive model registration

"Sucker gallleieeher design for photographic and cinematographic cameras "

The hiring concerns an arrangement of two Plane mirrors «wipe the two lenses of a viewfinder in a Galilean way Design according to latent 9U 929, through which a picture border frame, reflected in the focal plane of the eyepiece ©

Eb has already been proposed to complete the assembly according to the main patent so that either one or two Bohrblenden in the beam path, the einspiegelt the image bounding box, are switched. This avoids undesirable reflex phenomena superimposing the viewfinder image from appearing. Furthermore, another disadvantage is overcome, which is that the observing eye can see the image delimitation frame not only through the two plane mirrors but also directly without reflection.

The present innovation has the purpose of the formation of such a Eohrblende and its exact Centering along the beam path after the image bounding frame

especially easy to design · to achieve the au the two plane mirrors according to the main patent on the floodplain areas of a massive slave body is designed on the objective side in such a way that it has the dimensions which Bonrblea.de accepts. At the same time it acts as a carrier for all negative sucaerobj eic tire atnä the associated with this Bildbegrensungsraaaens. Sur "fester YereinXacnuag der Anon According to the main patent, the vitreous body is made of organic GIaB (clear plastic) consist of lcann, bit Suts provided, the sum fastening of the ßl & skkörere and thus also the negative sucker lenses with the attachment * - serve the frame on the camera body

You let control in a runaway game graphically reproduced. It shows ι

Afeb.1 a longitudinal section through the viewfinder according to the patent 914- 929 to illustrate the beam path,

Fig * 2 through the viewfinder accordingly the present taxation,

Fig. 3 shows a longitudinal section through the viewfinder according to Fig. 2, but with a different attachment between the glass body and the negative viewfinder lens,

Fig «4 is a perspective view of the fire without O ^ ular lens "

The searcher for the main patent 914 929 exists corresponding to Fig. 1 from the Suciierob ^ ektiv 1 and the viewfinder eyepiece 2 * The two plane mirrors 5 and 4 are arranged between the two lenses * They reflect the image boundary

frame 5 In the focal plane of the viewfinder eyepiece 2. The light bundle 6 represents the beam path as it is reflected back and forth between the two plane mirrors 3 and 4.

The observing eye can bypassing the reflective surfaces see the picture frame 5 through the light beam 7 directly, but only blurred,

This disadvantage is eliminated by neuerungsgemäsB that according to Fig.2 the two plane mirrors 3 and 4 on the Aussenf laughing 8.8 of a solid glass body are attached * To form a drilling aperture 8 ^e is the glass body 8 objektiveeitig in the external dimensions on a smaller body 8 removed, whereby the drill diaphragm 8 ° formed on the outer walls is painted matt-white.The latter makes a direct view of the picture frame 5 impossible and the unwanted reflections that superimpose the viewfinder image according to the arrangement according to Fig. 1 no longer occur. The smaller glass body 8 is at its front end 8 on the object side at the same time as the carrier of the negative viewfinder lens 1, since its tubular ^{extension 1 a} slides over the ear diaphragm 8 ^e and can be cemented to it. The negative viewfinder lens 1 has on its circumference a plane-parallel flange 1, on the front side of which the picture frame 5 can be attached.

Fig. 3 shows another type of attachment of the viewfinder lens, which consists in the fact that the aperture 9 between the small glass body 8 and viewfinder lens 1 is provided with tabs 9 bent back and forth, which on one side with the glass body 8 and on the

the other side can be connected to the viewfinder lens 1 auroii Kitten. So that the glass body 8 and those with it connected file on the simplest Yteise on the camera housing can be attached, it is with lugs 8 for screwing Yerselien.

The glass bodies 8 and 8 do not need to consist of one piece, they can also be cemented together.

To the described «execution foria of all! Parts To be able to perform on cheap Viieisc is as material Organic glass (transparent plastic) is intended for the glass body and the viewfinder lens.

Claims (2)

1.) Viewfinder Galilean design according to latent 914 929 for photographic and cinematographic cameras, characterized in that the two planar mirrors (3 and 4} are on the Auesen surfaces «ines a massive glass body (8), which is used to form a Eohrblend * (6 ^C ) is offset in the external dimensions on the object side and there on the same side forms the carrier of the negative viewfinder objective (1) including the image frame B (5) * 2.) viewfinder according to claim 1, characterized in that the organic glass (transparent plastic) existing Κοτρητ (8) is provided with attachments (S-) sum on the camera. 3 *} viewfinder according to claim 1 or 2, characterized in that the negative viewfinder lens (1) made of organic glass with a tubular attachment (Paes attachment or the like *) (1 ^C ) to be placed on the smaller body (p ) and an external, transparent, plane-parallel flange (1) for folding the picture delimitation frame (5). 4 ') The viewfinder of claim 1 or 2, characterized in that a diaphragm (9) between the glass body and the viewfinder lens with curved front and rear lugs (9 ^a) is provided, the 5' ^w ®üs J & * & ö- ^em vitreous (8) or connected to the viewing ob ^ ektiv (1) by kitten, Kodak Public Company In general power of attorney Ur.