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
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- 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)
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)
| 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 |
-
1922
- 1922-09-06 AT AT93723D patent/AT93723B/en active
Cited By (1)
| 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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