DE385194C - Cinema with optical compensation - Google Patents

Cinema with optical compensation

Info

Publication number
DE385194C
DE385194C DEE29146D DEE0029146D DE385194C DE 385194 C DE385194 C DE 385194C DE E29146 D DEE29146 D DE E29146D DE E0029146 D DEE0029146 D DE E0029146D DE 385194 C DE385194 C DE 385194C
Authority
DE
Germany
Prior art keywords
mirror
point
optical compensation
cinema
axes
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEE29146D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ernemann Werke AG
Original Assignee
Ernemann Werke 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 Ernemann Werke AG filed Critical Ernemann Werke AG
Priority to DEE29146D priority Critical patent/DE385194C/en
Application granted granted Critical
Publication of DE385194C publication Critical patent/DE385194C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B41/00—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor
    • G03B41/02—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film
    • G03B41/04—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film with optical compensator
    • G03B41/10—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film with optical compensator with oscillating reflecting member

Description

In dem Patent 359016 ist ein Kinoprojektor mit optischem Ausgleich der Bildbewegung durch abwechselnd wirksame, um außerhalb der Spiegelbreite liegende Achsen schwingendeIn the patent 359016 there is a cinema projector with optical compensation of the image movement by alternately effective to outside oscillating axes lying along the width of the mirror

-5 Spiegel und eine umlaufende Verteilerscheibe beschrieben, bei dem die Lage der Schwenkachsen in Beziehung gesetzt ist zur Lage des vorderen Hauptpunktes des Projektionsobjektivs. Der vordere Hauptpunkt des Objektivs stellt, wie aus Abb. 1 der genannten Patentschrift erkennbar ist, den Drehpunkt oder Konvergenzpunkt der bewegten abbildenden Strahlenbüschelachsen dar, deren Bewegung durch die Schwenkspiegel optisch ausgeglichen wird.-5 mirror and a rotating distributor disc described, in which the position of the pivot axes is related to the position of the front main point of the projection lens. The front main point of the lens is, as shown in Fig. 1 of the patent mentioned is recognizable, the pivot point or point of convergence of the moving imaging Beam bundle axes, the movement of which is optically balanced by the swivel mirror will.

Durch verschiedene Anforderungen beim praktischen Aufbau des Apparats kann sich die Notwendigkeit herausstellen, den Konvergenzpunkt der bewegten Büschelachsen aus demDue to various requirements in the practical construction of the apparatus, the Need to point out the point of convergence of the moving brush axes from the

so vorderen Hauptpunkt des Objektivs zu verlegen, beispielsweise nach K, wie in der Zeichnung. In diesem Falle verliert der vordere Hauptpunkt des Objektivs seinen bestimmenden Einfluß auf die Lage der Schwenkachsen der Spiegel. Alle Betrachtungen, die in « der Beschreibung des .Patents 359016 bezüglich des vorderen Hauptpunkts des Objektivs angestellt sind, erhalten nunmehr Gültigkeit für den Konvergenzpunkt K. so to relocate the front main point of the lens, for example to K, as in the drawing. In this case, the front main point of the lens loses its determining influence on the position of the pivot axes of the mirrors. All considerations made in the description of patent 359016 with regard to the front main point of the objective are now valid for the convergence point K.

3o' Sollen also seitliche Verschiebungen der Strahlenbüschel auf ein Minimum zurückgeführt werden, so muß die Schwenkachse Z1 des unmittelbar bestrählten Spiegels in den oberen oder unteren Scheitel des Kreises gelegt werden, der um den Konvergenzpunkt K geschla- gen wird mit einem Radius gleich der Entfernung K-E zwischen dem Konvergenzpunkt K und dem Schnittpunkt £ des Ausgleichsspiegels mit der optischen Achse.3o 'If lateral displacements of the bundles of rays are to be reduced to a minimum, the pivot axis Z 1 of the mirror directly irradiated must be placed in the upper or lower vertex of the circle that is drawn around the point of convergence K with a radius equal to the distance KE between the point of convergence K and the point of intersection £ of the compensating mirror with the optical axis.

Die Lage des Schwenkpunkts Z2 des zwei- 4» ten Ausgleichsspiegels F ergibt sich unter Berücksichtigung der Reflexion an der Verteilerscheibe D. The location of the pivot point 2 of the two Z 4 "th compensation mirror F is obtained taking account of the reflection at the distributor disc D.

Die gleiche Anordnung der Schwenkachsen der Ausgleichsspiegel gilt auch für Kinoprojektoren, die statt einer mehrere Verteilerscheiben besitzen, und sie hat sinngemäß Geltung sowohl für Schwenkspiegel des Bild- wie Beleuchtungsausgleichs.,The same arrangement of the swivel axes of the equalizing mirrors also applies to cinema projectors, which have several distributor slices instead of one, and they apply mutatis mutandis for both oscillating mirrors for image compensation and lighting compensation.,

Claims (2)

Patent-Ansprüche:Patent Claims: i. Kino mit optischem Ausgleich durch abwechselnd wirksame, um außerhalb der Spiegelbreite liegende Achsen schwingende Spiegel und eine oder mehrere Verteilerscheiben nach Patent 359016, dadurch gekennzeichnet, daß die Achse des unmittelbar bestrahlten Spiegels (-E) auf einem um den Konvergenzpunkt (K) der bewegteni. Cinema with optical compensation by alternately effective mirrors oscillating about axes lying outside the mirror width and one or more distributor disks according to Patent 359016, characterized in that the axis of the directly irradiated mirror (-E) is on a point of convergence (K) of the Strahlenbüschelachsen . ,mit dem Radius (K-E) gleich dem Abstand zwischen dem Koavergenzpunkt, (K\, und^Spiegel (E) geschlagenen Kreis in oder nahe dem oberen (ZZ) oder unteren (Z1) Scheitel dieses Kreises Hegt, während die Schwingungsachse (Z2) des zweiten mittelbar bestrahlten Spiegels (F) gegen diejenige des ersten Spiegels gemäß der Reflexion des in der optischen Achse ausgesandten Strahles an der Verteilerscheibe (D) verschoben ist.Ray bundle axes. , with the radius (KE) equal to the distance between the point of covergence, (K \, and ^ Spiegel (E) , a drawn circle in or near the upper (ZZ) or lower (Z 1 ) vertex of this circle, while the oscillation axis (Z 2 ) of the second indirectly irradiated mirror (F) is shifted from that of the first mirror according to the reflection of the beam emitted in the optical axis on the distributor disk (D). 2. Kino mit optischem Ausgleich nach Anspruch i, dadurch gekennzeichnet, daß die in Anspruch ι gekennzeichnete Anordnung der Spiegelschwenkachsen sowohl für den optischen Ausgleich der Beleuchtungsals auch der abbildenden Strahlen durchgeführt ist.2. cinema with optical compensation according to claim i, characterized in that the arrangement of the mirror pivot axes characterized in claim ι both for the optical compensation of the illumination as well as the imaging rays is carried out is.
DEE29146D 1923-03-06 1923-03-06 Cinema with optical compensation Expired DE385194C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE29146D DE385194C (en) 1923-03-06 1923-03-06 Cinema with optical compensation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE29146D DE385194C (en) 1923-03-06 1923-03-06 Cinema with optical compensation

Publications (1)

Publication Number Publication Date
DE385194C true DE385194C (en) 1923-12-06

Family

ID=7073758

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE29146D Expired DE385194C (en) 1923-03-06 1923-03-06 Cinema with optical compensation

Country Status (1)

Country Link
DE (1) DE385194C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2493795A (en) * 1946-12-16 1950-01-10 Wikkenhauser Gustav Film projection with continuously moving film
US2590281A (en) * 1948-08-13 1952-03-25 Rca Corp Television film scanner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2493795A (en) * 1946-12-16 1950-01-10 Wikkenhauser Gustav Film projection with continuously moving film
US2590281A (en) * 1948-08-13 1952-03-25 Rca Corp Television film scanner

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