AT59459B - Basic rangefinder based on the principle of coincidence and inverted rangefinders, the image-combining ocular prism of which consists of two or more prisms which touch in a plane that crosses the ocular field and is partially designed as a mirror surface. - Google Patents

Basic rangefinder based on the principle of coincidence and inverted rangefinders, the image-combining ocular prism of which consists of two or more prisms which touch in a plane that crosses the ocular field and is partially designed as a mirror surface.

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Publication number
AT59459B
AT59459B AT59459DA AT59459B AT 59459 B AT59459 B AT 59459B AT 59459D A AT59459D A AT 59459DA AT 59459 B AT59459 B AT 59459B
Authority
AT
Austria
Prior art keywords
ocular
prisms
prism
plane
coincidence
Prior art date
Application number
Other languages
German (de)
Original Assignee
Optische Anstalt Goerz Ag
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 Optische Anstalt Goerz Ag filed Critical Optische Anstalt Goerz Ag
Application granted granted Critical
Publication of AT59459B publication Critical patent/AT59459B/en

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Description

  

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   Bei der auf der Zeichnung dargestellten Ausführungsform gelangen die durch das Objektiv 2 gehenden   Strahlen nach viermaliger Reflexion   in das Okular, von welchen Reflexionen zwei durch das dem Objektiv vorgelagerte Pentaprisma 5, eine durch die Fläche 15 und eine durch die Fläche 8 bewirkt werden. Die durch das Objektiv 2 abgebildeten Objekte erscheinen also im Bildfelde aufrecht und seitenrichtig. 



   Die von dem Objektiv 1 herkommenden Strahlen erfahren eine Reflexion mehr, so dass der Entfernungsmesser als Invertentfernungsmeaser wirkt. Soll derselbe als Koinzidenz- 
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 einer   Dachfläche   ausgestattet werden, oder es müsste in anderer Weise für eine gerade Anzahl von   Reflexionsnächen   gesorgt werden. 



   Das in den Fig. 3 und 4 dargestellte   Okularprisma m   terscheidet sich dadurch von dem in den Fig. 1 und 2 dargestellten, dass sein Volumen dadurch reduziert worden ist, dass der Zwischenraum zwischen den Vorsatzprismen 13, 14 fortgefallen ist unter gleichzeitiger Vereinigung der Prismen 13, 14 mit den Prismen 6,7. Dieses ist dadurch ermöglicht, dass die Austrittsfläche 12 an einem besonderen mit dem Prisma 7 verkitteten Prisma 17 vorgesehen ist. Die beiden gegeneinander konvergierenden reflektierenden Flächen des Okularprismas sind wiederum mit   8,   9 und die diese Flächen tragenden Prismen selbst mit 6,7 bezeichnet. Der   Spiegelbelag   zwischen den Prismen trägt wiederum die Bezeichnung 10.

   Die sich kreuzenden Flächen 15, 16, welche die von den Objektiven herkommenden Strahlen in das eigentliche   Okularprisma   hineinwerfen, sind an die Prismen 6,7 direkt angeschliffen. 



   Bei der in Fig. 5 und 6 dargestellten Ausführungsform des Okularprismas ist die besondere   Austrittsfläche 12 fortgefallen. Als Austrittsfläche   dient hier die Fläche 9 des Prismas 7. Der Fortfall der besonderen Austrittsfläche ist durch Wahl besonderer Neigungen der Flächen 8, 9 zu dem   Spiegel belag 10 möglich   geworden. Beide Flächen   8,   9 schliessen mit der Ebene des SpIegel belags 10 Winkel von 30  ein, wobei sich für die austretenden Strahlen eine Neigung von 600 zur Ebene des Spiegelbelags   10   ergibt. 
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   In the embodiment shown in the drawing, the rays passing through the objective 2 reach the eyepiece after four reflections, two of which are caused by the pentaprism 5 in front of the objective, one by the surface 15 and one by the surface 8. The objects imaged by the lens 2 thus appear upright and the right way round in the image field.



   The rays coming from the lens 1 experience one more reflection, so that the range finder acts as an inverted range measer. Should the same as coincidence
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 a roof surface, or it would have to be provided in another way for an even number of reflection surfaces.



   The ocular prism m shown in FIGS. 3 and 4 differs from that shown in FIGS. 1 and 2 in that its volume has been reduced by the fact that the space between the prisms 13, 14 has disappeared while the prisms 13 are combined at the same time , 14 with prisms 6.7. This is made possible by the fact that the exit surface 12 is provided on a special prism 17 cemented to the prism 7. The two mutually converging reflective surfaces of the ocular prism are in turn designated 8, 9 and the prisms carrying these surfaces themselves are designated 6.7. The mirror coating between the prisms is again labeled 10.

   The intersecting surfaces 15, 16, which the rays coming from the objectives throw into the actual ocular prism, are ground directly onto the prisms 6, 7.



   In the embodiment of the ocular prism shown in FIGS. 5 and 6, the special exit surface 12 has been omitted. The surface 9 of the prism 7 serves here as the exit surface. The elimination of the special exit surface has become possible by choosing special inclinations of the surfaces 8, 9 to the mirror covering 10. Both surfaces 8, 9 enclose an angle of 30 with the plane of the mirror lining 10, with an inclination of 600 to the plane of the mirror lining 10 resulting for the exiting rays.
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Claims (1)

Basisentfernungsmesser mit aus zwei an sich bekannten Ablenkungsprismen zusammen- gesetztem Okularprisma und Spiegel belag in der Prismenberührungsebene, dessen die Trennungslinie im Bildfeld abgebende Begrenzungslinie parallel zur Standlinie des Instruments und senkrecht zur Achse des austretenden Strahlenbündels angeordnet ist. dadurch gekennzeichnet, dass der Spiegdbelag, dessen Begrenzungslinie die Trennungslinie im Bildfeld ergibt, derart zwischen Liegeneinander konvergierendgn spiegelnden Flächen der das Okularpnsma bildenden Ab- EMI2.3 Basic rangefinder with an ocular prism composed of two known deflection prisms and a mirror coated in the prism contact plane whose boundary line emitting the dividing line in the image field is arranged parallel to the base line of the instrument and perpendicular to the axis of the exiting beam. characterized in that the mirror coating, the boundary line of which results in the dividing line in the image field, in such a way converging between lying surfaces of the reflective surfaces of the images that form the eyepiece EMI2.3
AT59459D 1910-11-09 1911-11-03 Basic rangefinder based on the principle of coincidence and inverted rangefinders, the image-combining ocular prism of which consists of two or more prisms which touch in a plane that crosses the ocular field and is partially designed as a mirror surface. AT59459B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE59459X 1910-11-09

Publications (1)

Publication Number Publication Date
AT59459B true AT59459B (en) 1913-06-10

Family

ID=5630017

Family Applications (1)

Application Number Title Priority Date Filing Date
AT59459D AT59459B (en) 1910-11-09 1911-11-03 Basic rangefinder based on the principle of coincidence and inverted rangefinders, the image-combining ocular prism of which consists of two or more prisms which touch in a plane that crosses the ocular field and is partially designed as a mirror surface.

Country Status (1)

Country Link
AT (1) AT59459B (en)

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