AT93723B - Reflector for projection lamps. - Google Patents

Reflector for projection lamps.

Info

Publication number
AT93723B
AT93723B AT93723DA AT93723B AT 93723 B AT93723 B AT 93723B AT 93723D A AT93723D A AT 93723DA AT 93723 B AT93723 B AT 93723B
Authority
AT
Austria
Prior art keywords
reflector
projection lamps
arc
point
main axis
Prior art date
Application number
Other languages
German (de)
Original Assignee
Joh Kremenezky Fa
Leopold Wimberger
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 Joh Kremenezky Fa, Leopold Wimberger filed Critical Joh Kremenezky Fa
Application granted granted Critical
Publication of AT93723B publication Critical patent/AT93723B/en

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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 



   Der vorliegende Reflektor für Projektionslampen der hauptsächlich für Kinozwecke bestimmt ist, besteht wie in Fig. 1 in der Draufsicht und in Fig. 2 im Schnitt nach der Linie   A-B,   Fig. 1, dargestellt ist, aus einer an einer Stelle des Umfanges aufgeschnittenen Umdrehungsfläche   1,   deren Erzeugende 2, Fig. 2 von einem nach aussen konvexen Bogen einer Parabel gebildet wird, deren Hauptachse senkrecht steht auf der Umdrehungsaehse. Der Parabelbogen ist symmetrisch zur Hauptachse, die Lage des Brenn-, punktes des erzeugenden Parabelbogens gegenüber der Umdrehungsachse ist von untergeordneter Bedeutung. 



   Das durch die aufgeschnittene Stelle 3 der Umdrehungsfläche dringende, zu Projektionszwecken dienende Licht ist von grosser Stärke ; dabei ist, wie die Erfahrung lehrt, der Kohlenstiftverbrauch der mit dem Lichtbogen in den Durchschnittspunkt der Umdrehungsachse der Reflektorfläche mit der Hauptachse des erzeugenden Parabelbogens aufzustellenden Bogenlampe und ebenso ihr Stromverbrauch wesentlich geringer als unter andern Umständen. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 
 EMI1.1
 



   The present reflector for projection lamps, which is mainly intended for cinema purposes, consists, as shown in Fig. 1 in plan view and in Fig. 2 in section along the line AB, Fig. 1, of a surface of revolution 1 cut open at one point on the circumference , the generatrix 2, Fig. 2 of which is formed by an outwardly convex arc of a parabola, the main axis of which is perpendicular to the axis of rotation. The parabolic arc is symmetrical to the main axis, the position of the focal point of the generating parabolic arc in relation to the axis of rotation is of secondary importance.



   The light penetrating through the cut open point 3 of the surface of revolution and serving for projection purposes is of great strength; Here, as experience shows, the consumption of carbon pencils by the arc lamp to be set up with the arc in the intersection of the axis of rotation of the reflector surface with the main axis of the generating parabolic arc and also its power consumption is much lower than under other circumstances.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Reflektor für Projektionslampen, dadurch gekennzeichnet, dass er aus einer an einer Stelle des Umfanges aufgeschnittenen Umdrehungsfläche besteht, deren Eizeugende ein mit der konvexen Seite nach aussen gekehrter, zu seiner Hauptachse symmetrischer Parabelbogen ist und diese Hauptachse die Umdrehungsachse in dem Punkte schneidet, in dem der Lichtbogen oder die Lichtquelle aufzustellen ist. EMI1.2 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: A reflector for projection lamps, characterized in that it consists of a surface of revolution cut open at one point on the circumference, the ovoid end of which is a parabolic arc which is turned outwards with the convex side and is symmetrical to its main axis and this main axis intersects the axis of rotation at the point where the Arc or the light source is to be set up. EMI1.2 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT93723D 1922-09-06 1922-09-06 Reflector for projection lamps. AT93723B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT93723T 1922-09-06

Publications (1)

Publication Number Publication Date
AT93723B true AT93723B (en) 1923-07-25

Family

ID=3613576

Family Applications (1)

Application Number Title Priority Date Filing Date
AT93723D AT93723B (en) 1922-09-06 1922-09-06 Reflector for projection lamps.

Country Status (1)

Country Link
AT (1) AT93723B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE861653C (en) * 1951-02-02 1953-01-05 Otto Bohlig Apparatus for assembling and disassembling pneumatics for undivided rims

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE861653C (en) * 1951-02-02 1953-01-05 Otto Bohlig Apparatus for assembling and disassembling pneumatics for undivided rims

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